Implement the NCM sysmodule (closes #91)

* Implement NCM

* Modernize ncm_main

* Remove unnecessary smExit

* Give access to svcCallSecureMonitor

* Stack size bump

* Fix incorrect setup for NandUser's content storage entry

* Fix a potential data abort when flushing the placeholder accessor cache

* Fix HasFile and HasDirectory

* Use r+b, not w+b

* Misc fixes

* errno begone

* Fixed more stdio error handling

* More main fixes

* Various command improvements

* Make dispatch tables great again

* Fix logic inversion

* Fixed content path generation

* Bump heap size, fix CleanupAllPlaceHolder

* Various fixes. Note: This contains debug stuff which will be removed later. I was getting tired of having to cherrypick tiny changes

* Fixed placeholder/content deletion

* Fixed incorrect content manager destruction

* Prevent automatic placeholder creation on open

* Fixed List implementation. Also lots of debug logging.

* Removed debug code

* Added a scope guard for WritePlaceHolder

* Manually prevent placeholder/content appending

* Revert "Removed debug code"

This reverts commit d6ff261fcc.

* Always cache placeholder file. Switch to ftell for preventing appending

* Universally use EnsureEnabled

* Abstract away file writing logic

* Misc cleanup

* Refactor placeholder cacheing

* Remove debug code (again)

* Revert "Remove debug code (again)"

This reverts commit 168447d80e.

* Misc changes

* Fixed file modes

* Fixed ContentId/PlaceHolderId alignment

* Improved type safety

* Fixed reinitialization

* Fixed doubleup on path creation

* Remove debug code

* Fixed 1.0.0 booting

* Correct amount of add on content

* Correct main thread stack size

* lr: Introducing registered data

* Reorder stratosphere Makefile

* Move results to libstrat

* lr: Cleanup lr_redirection

* lr: lr_manager tweaks

* lr: Imrpoved path handling and adjust ResolveAddOnContentPath order

* lr: Organise types

* Add eof newlines

* lr: Eliminate unnecessary vars

* lr: Unnecessary vars 2 electric boogaloo

* lr: Various helpers

* lr: RegisteredLocationResolver helpers

* ncm: Move ncm_types to libstrat

* ncm: Misc cleanup

* Implement NCM

* Modernize ncm_main

* Remove unnecessary smExit

* Give access to svcCallSecureMonitor

* Stack size bump

* Fix incorrect setup for NandUser's content storage entry

* Fix a potential data abort when flushing the placeholder accessor cache

* Fix HasFile and HasDirectory

* Use r+b, not w+b

* Misc fixes

* errno begone

* Fixed more stdio error handling

* More main fixes

* Various command improvements

* Make dispatch tables great again

* Fix logic inversion

* Fixed content path generation

* Bump heap size, fix CleanupAllPlaceHolder

* Various fixes. Note: This contains debug stuff which will be removed later. I was getting tired of having to cherrypick tiny changes

* Fixed placeholder/content deletion

* Fixed incorrect content manager destruction

* Prevent automatic placeholder creation on open

* Fixed List implementation. Also lots of debug logging.

* Removed debug code

* Added a scope guard for WritePlaceHolder

* Manually prevent placeholder/content appending

* Revert "Removed debug code"

This reverts commit d6ff261fcc.

* Always cache placeholder file. Switch to ftell for preventing appending

* Universally use EnsureEnabled

* Abstract away file writing logic

* Misc cleanup

* Refactor placeholder cacheing

* Remove debug code (again)

* Revert "Remove debug code (again)"

This reverts commit 168447d80e.

* Misc changes

* Fixed file modes

* Fixed ContentId/PlaceHolderId alignment

* Improved type safety

* Fixed reinitialization

* Fixed doubleup on path creation

* Remove debug code

* Fixed 1.0.0 booting

* Correct amount of add on content

* Correct main thread stack size

* lr: Introducing registered data

* Reorder stratosphere Makefile

* Move results to libstrat

* lr: Cleanup lr_redirection

* lr: lr_manager tweaks

* lr: Imrpoved path handling and adjust ResolveAddOnContentPath order

* lr: Organise types

* Add eof newlines

* lr: Eliminate unnecessary vars

* lr: Unnecessary vars 2 electric boogaloo

* lr: Various helpers

* lr: RegisteredLocationResolver helpers

* ncm: Move ncm_types to libstrat

* ncm: Misc cleanup

* Updated AddOnContentLocationResolver and RegisteredLocationResolver to 9.0.0

* Finished updating lr to 9.0.0

* Updated NCM to 9.0.0

* Fix libstrat includes

* Fixed application launching

* title_id_2 -> owner_tid

* Updated to new-ipc

* Change to using pure virtuals

* Title Id -> Program Id

* Fixed compilation against master

* std::scoped_lock<> -> std::scoped_lock

* Adopted R_UNLESS and R_CONVERT

* Prefix namespace to Results

* Adopt std::numeric_limits

* Fixed incorrect error handling in ReadFile

* Adopted AMS_ABORT_UNLESS

* Adopt util::GenerateUuid()

* Syntax improvements

* ncm_types: Address review

* Address more review comments

* Updated copyrights

* Address more feedback

* More feedback addressed

* More changes

* Move dispatch tables out of interface files

* Addressed remaining comments

* lr: move into libstratosphere

* ncm: Fix logic inversion

* lr: Add comments

* lr: Remove whitespace

* ncm: Start addressing feedback

* ncm: Cleanup InitializeContentManager

* lr: support client-side usage

* lr_service -> lr_api

* ncm: Begin refactoring content manager

* ncm: More content manager improvements

* ncm: Content manager mount improvements

* ldr: use lr bindings

* lr bindings usage: minor fixes

* ncm/lr: Pointer placement

* ncm: placeholder accessor cleanup

* ncm: minor fixes

* ncm: refactor rights cache

* ncm: content meta database cleanup

* ncm: move content meta database impl out of interface file

* ncm: Use const ContentMetaKey &

* ncm: fix other non-const ContentMetaKey references

* ncm: content meta database cleanup

* ncm: content storage fixes for 2.0.0

* ncm: add missing end of file newlines

* ncm: implement ContentMetaReader

* ncm: client-side api

* ncm: trim trailing spaces

* ncm: FS_MAX_PATH-1 -> fs::EntryNameLengthMax

* ncm: Use PathString and Path

* fs: implement accessor wrappers for ncm

* fs: implement user fs wrappers

* fs: add MountSdCard

* ncm: move to content manager impl

* ncm: fix up main

* kvdb: use fs::

* fs: Add wrappers needed for ncm

* ncm: use fs bindings, other refactoring

* ncm: minor fixes

* fsa: fix ReadFile without size output

* fs: add substorage, rom path tool

* ncm: fix dangling fsdev usage

* fs: fix bug in Commit

* fs: fixed incorrect mode check

* fs: implement Mount(System)Data

* ncm: don't delete hos

* results: add R_SUCCEED_IF

* ams-except-ncm: use R_SUCCEED_IF

* ncm: added comments

* ncm: fix api definitions

* ncm: use R_SUCCEED_IF

* pm: think of the savings

* ncm: employ kernel strats

* ncm: Nintendo has 5 MiB of heap. Give ourselves 4 to be safe, pending analysis

* ncm: refactor IDs, split types header into many headers

* ams.mitm: use fs bindings instead of stdio

* fs: SystemData uses SystemDataId

* ncm: improve meta-db accuracy

* ncm: inline getlatestkey

* fs: improve UnsupportedOperation results

* fs: modernize mount utils

* ams: misc fixes for merge-errors

* fs: improve unsupportedoperation results

* git subrepo pull emummc

subrepo:
  subdir:   "emummc"
  merged:   "d12dd546"
upstream:
  origin:   "https://github.com/m4xw/emuMMC"
  branch:   "develop"
  commit:   "d12dd546"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

* util: add boundedmap

* ncm: minor style fixes

* ncm: don't unmount if mounting fails

* lr: bug fixes

* ncm: implement ncm.for-initialize + ncm.for-safemode

* lr: ncm::ProgramId::Invalid -> ncm::InvalidProgramId

* ncm: fix open directory mode on 1.0.0

* ncm: fix fs use, implement more of < 4.0.0 for-initialize/safemode

* ncm: implement packagedcontent -> content for building metadb

* ncm: fix save data flag management

* ncm: address some review suggestions (thanks @leoetlino!)

* updater: use fs bindings

* fs: implement MountCode

* fs: prefer make_unique to operator new

* ncm: implement remaining ContentMetaDatabaseBuilder functionality

Co-authored-by: Michael Scire <SciresM@gmail.com>

emummc/.gitrepo

@@ -6,7 +6,7 @@
 [subrepo]
 	remote = https://github.com/m4xw/emuMMC
 	branch = develop
-	commit = bd81a674a946c30b566e1732a95c18f19b701558
+	commit = d12dd5464422029a1e5601916517ec3f1c81d8d0
-	parent = 6ee525201ccef107c61d81ba73c891e3eb5f0215
+	parent = 259a1a7513236a1de4d373bc6cb99032ede2c626
 	method = rebase
-	cmdver = 0.4.0
+	cmdver = 0.4.1

emummc/README.md

@@ -1,21 +1,21 @@
 # emuMMC
-*A SDMMC driver replacement for Nintendo's Filesystem Services, by **m4xw***
+*A SDMMC driver replacement for Nintendo's Filesystem Services, by **m4xw***  
 
 ### Supported Horizon Versions
 **1.0.0 - 9.1.0**
 
 ## Features
-* Arbitrary SDMMC backend selection
+* Arbitrary SDMMC backend selection  
   **This allows loading eMMC from SD or even SD from eMMC**
-* On the fly hooking / patching, fully self-infesting
+* On the fly hooking / patching, fully self-infesting  
   **Only one payload required for all versions!**
-* File-based SDMMC backend support (from SD)
+* File-based SDMMC backend support (from SD)  
   **This allows loading eMMC images from hekate-backups (split or not)**
-* SDMMC device based sector offset (*currently eMMC only*)
+* SDMMC device based sector offset (*currently eMMC only*)  
   **Raw partition support for eMMC from SD with less performance overhead**
-* Full support for `/Nintendo` folder redirection to a arbitrary path
+* Full support for `/Nintendo` folder redirection to a arbitrary path  
   **No 8 char length restriction!**
-* exosphere based context configuration
+* exosphere based context configuration  
   **This includes full support for multiple emuMMC images**
 
 ## Compiling

emummc/source/FS/offsets/100.h

@@ -48,10 +48,8 @@
 // Nintendo Paths
 #define FS_OFFSET_100_NINTENDO_PATHS \
 { \
-    {.opcode_reg = 9, .adrp_offset = 0x00032C58, .add_rel_offset = 4}, \
+    {.opcode_reg = 8, .adrp_offset = 0x00032C58, .add_rel_offset = 8}, \
-    {.opcode_reg = 8, .adrp_offset = 0x00032C60, .add_rel_offset = 4}, \
+    {.opcode_reg = 9, .adrp_offset = 0x00032F40, .add_rel_offset = 8}, \
-    {.opcode_reg = 9, .adrp_offset = 0x00032F3C, .add_rel_offset = 4}, \
-    {.opcode_reg = 8, .adrp_offset = 0x00032F44, .add_rel_offset = 4}, \
     {.opcode_reg = 0, .adrp_offset = 0, .add_rel_offset = 0}, \
 }
 

emummc/source/main.c

@@ -48,6 +48,9 @@ extern char __argdata__;
 // TODO
 static char nintendo_path[0x80] = "Nintendo";
 
+// 1.0.0 requires special path handling because it has separate album and contents paths.
+#define FS_100_ALBUM_PATH    0
+#define FS_100_CONTENTS_PATH 1
 static char nintendo_path_album_100[0x100] = "/Nintendo/Album";
 static char nintendo_path_contents_100[0x100] = "/Nintendo/Contents";
 
@@ -275,23 +278,18 @@ void setup_nintendo_paths(void)
         // 1.0.0 needs special handling because it uses two paths.
         // Do album path
         {
-            int path_len = snprintf(nintendo_path_album_100, sizeof(nintendo_path_album_100), "/%s/Album", nintendo_path);
+            snprintf(nintendo_path_album_100, sizeof(nintendo_path_album_100), "/%s/Album", nintendo_path);
             intptr_t nintendo_album_path_location = (intptr_t)&nintendo_path_album_100;
-            intptr_t album_path_location = nintendo_album_path_location + path_len - 6; // "/Album"
+            uintptr_t fs_adrp_opcode_location = INJECT_OFFSET(uintptr_t, fs_offsets->nintendo_paths[FS_100_ALBUM_PATH].adrp_offset);
-            uintptr_t fs_n_adrp_opcode_location = INJECT_OFFSET(uintptr_t, fs_offsets->nintendo_paths[0].adrp_offset);
+            write_adrp_add(fs_offsets->nintendo_paths[FS_100_ALBUM_PATH].opcode_reg, fs_adrp_opcode_location, fs_offsets->nintendo_paths[FS_100_ALBUM_PATH].add_rel_offset, nintendo_album_path_location);
-            uintptr_t fs_adrp_opcode_location = INJECT_OFFSET(uintptr_t, fs_offsets->nintendo_paths[1].adrp_offset);
-            write_adrp_add(fs_offsets->nintendo_paths[0].opcode_reg, fs_n_adrp_opcode_location, fs_offsets->nintendo_paths[0].add_rel_offset, nintendo_album_path_location);
-            write_adrp_add(fs_offsets->nintendo_paths[1].opcode_reg, fs_adrp_opcode_location, fs_offsets->nintendo_paths[1].add_rel_offset, album_path_location);
         }
+
         // Do contents path
         {
-            int path_len = snprintf(nintendo_path_contents_100, sizeof(nintendo_path_contents_100), "/%s/Contents", nintendo_path);
+            snprintf(nintendo_path_contents_100, sizeof(nintendo_path_contents_100), "/%s/Contents", nintendo_path);
             intptr_t nintendo_contents_path_location = (intptr_t)&nintendo_path_contents_100;
-            intptr_t contents_path_location = nintendo_contents_path_location + path_len - 9; // "/Contents"
+            uintptr_t fs_adrp_opcode_location = INJECT_OFFSET(uintptr_t, fs_offsets->nintendo_paths[FS_100_CONTENTS_PATH].adrp_offset);
-            uintptr_t fs_n_adrp_opcode_location = INJECT_OFFSET(uintptr_t, fs_offsets->nintendo_paths[2].adrp_offset);
+            write_adrp_add(fs_offsets->nintendo_paths[FS_100_CONTENTS_PATH].opcode_reg, fs_adrp_opcode_location, fs_offsets->nintendo_paths[FS_100_CONTENTS_PATH].add_rel_offset, nintendo_contents_path_location);
-            uintptr_t fs_adrp_opcode_location = INJECT_OFFSET(uintptr_t, fs_offsets->nintendo_paths[3].adrp_offset);
-            write_adrp_add(fs_offsets->nintendo_paths[2].opcode_reg, fs_n_adrp_opcode_location, fs_offsets->nintendo_paths[2].add_rel_offset, nintendo_contents_path_location);
-            write_adrp_add(fs_offsets->nintendo_paths[3].opcode_reg, fs_adrp_opcode_location, fs_offsets->nintendo_paths[3].add_rel_offset, contents_path_location);
         }
     }
 }

libraries/libmesosphere/source/arch/arm64/kern_k_interrupt_manager.cpp

@@ -262,8 +262,8 @@ namespace ams::kern::arch::arm64 {
         R_UNLESS(entry.handler != nullptr, svc::ResultInvalidState());
 
         /* If auto-cleared, we can succeed immediately. */
-        R_UNLESS(entry.manually_cleared,   ResultSuccess());
+        R_SUCCEED_IF(!entry.manually_cleared);
-        R_UNLESS(entry.needs_clear,        ResultSuccess());
+        R_SUCCEED_IF(!entry.needs_clear);
 
         /* Clear and enable. */
         entry.needs_clear = false;
@@ -277,8 +277,8 @@ namespace ams::kern::arch::arm64 {
         R_UNLESS(entry.handler != nullptr, svc::ResultInvalidState());
 
         /* If auto-cleared, we can succeed immediately. */
-        R_UNLESS(entry.manually_cleared,   ResultSuccess());
+        R_SUCCEED_IF(!entry.manually_cleared);
-        R_UNLESS(entry.needs_clear,        ResultSuccess());
+        R_SUCCEED_IF(!entry.needs_clear);
 
         /* Clear and set priority. */
         entry.needs_clear = false;

libraries/libmesosphere/source/arch/arm64/kern_k_page_table.cpp

@@ -832,7 +832,7 @@ namespace ams::kern::arch::arm64 {
         L1PageTableEntry *l1_entry = impl.GetL1Entry(virt_addr);
         if (l1_entry->IsBlock()) {
             /* If our block size is too big, don't bother. */
-            R_UNLESS(block_size < L1BlockSize, ResultSuccess());
+            R_SUCCEED_IF(block_size >= L1BlockSize);
 
             /* Get the addresses we're working with. */
             const KProcessAddress block_virt_addr  = util::AlignDown(GetInteger(virt_addr), L1BlockSize);
@@ -859,10 +859,10 @@ namespace ams::kern::arch::arm64 {
         }
 
         /* If we don't have an l1 table, we're done. */
-        R_UNLESS(l1_entry->IsTable(), ResultSuccess());
+        R_SUCCEED_IF(!l1_entry->IsTable());
 
         /* We want to separate L2 contiguous blocks into L2 blocks, so check that our size permits that. */
-        R_UNLESS(block_size < L2ContiguousBlockSize, ResultSuccess());
+        R_SUCCEED_IF(block_size >= L2ContiguousBlockSize);
 
         L2PageTableEntry *l2_entry = impl.GetL2Entry(l1_entry, virt_addr);
         if (l2_entry->IsBlock()) {
@@ -878,7 +878,7 @@ namespace ams::kern::arch::arm64 {
             }
 
             /* We want to separate L2 blocks into L3 contiguous blocks, so check that our size permits that. */
-            R_UNLESS(block_size < L2BlockSize, ResultSuccess());
+            R_SUCCEED_IF(block_size >= L2BlockSize);
 
             /* Get the addresses we're working with. */
             const KProcessAddress block_virt_addr  = util::AlignDown(GetInteger(virt_addr), L2BlockSize);
@@ -905,10 +905,10 @@ namespace ams::kern::arch::arm64 {
         }
 
         /* If we don't have an L3 table, we're done. */
-        R_UNLESS(l2_entry->IsTable(), ResultSuccess());
+        R_SUCCEED_IF(!l2_entry->IsTable());
 
         /* We want to separate L3 contiguous blocks into L2 blocks, so check that our size permits that. */
-        R_UNLESS(block_size < L3ContiguousBlockSize, ResultSuccess());
+        R_SUCCEED_IF(block_size >= L3ContiguousBlockSize);
 
         /* If we're contiguous, try to separate. */
         L3PageTableEntry *l3_entry = impl.GetL3Entry(l2_entry, virt_addr);

libraries/libmesosphere/source/board/nintendo/nx/kern_k_device_page_table.cpp

@@ -257,7 +257,7 @@ namespace ams::kern::board::nintendo::nx {
                             const WordType clear_bit = (this->state[i] + 1) ^ (this->state[i]);
                             this->state[i] |= clear_bit;
                             out[num_reserved++] = static_cast<u8>(BitsPerWord * i + BitsPerWord - 1 - ClearLeadingZero(clear_bit));
-                            R_UNLESS(num_reserved != num_desired, ResultSuccess());
+                            R_SUCCEED_IF(num_reserved == num_desired);
                         }
                     }
 

libraries/libmesosphere/source/kern_k_capabilities.cpp

@@ -211,7 +211,9 @@ namespace ams::kern {
         /* Validate this is a capability we can act on. */
         const auto type = GetCapabilityType(cap);
         R_UNLESS(type != CapabilityType::Invalid, svc::ResultInvalidArgument());
-        R_UNLESS(type != CapabilityType::Padding, ResultSuccess());
+
+        /* If the type is padding, we have no work to do. */
+        R_SUCCEED_IF(type == CapabilityType::Padding);
 
         /* Check that we haven't already processed this capability. */
         const auto flag = GetCapabilityFlag(type);

libraries/libmesosphere/source/kern_k_page_group.cpp

@@ -38,7 +38,7 @@ namespace ams::kern {
 
     Result KPageGroup::AddBlock(KVirtualAddress addr, size_t num_pages) {
         /* Succeed immediately if we're adding no pages. */
-        R_UNLESS(num_pages != 0, ResultSuccess());
+        R_SUCCEED_IF(num_pages == 0);
 
         /* Check for overflow. */
         MESOSPHERE_ASSERT(addr < addr + num_pages * PageSize);
@@ -46,7 +46,7 @@ namespace ams::kern {
         /* Try to just append to the last block. */
         if (!this->block_list.empty()) {
             auto it = --(this->block_list.end());
-            R_UNLESS(!it->TryConcatenate(addr, num_pages), ResultSuccess());
+            R_SUCCEED_IF(it->TryConcatenate(addr, num_pages));
         }
 
         /* Allocate a new block. */

libraries/libstratosphere/include/stratosphere.hpp

@@ -28,8 +28,8 @@
 #include "stratosphere/dd.hpp"
 #include "stratosphere/lmem.hpp"
 
-/* Lots of things depend on NCM, for Program IDs. */
+/* Pull in all ID definitions from NCM. */
-#include "stratosphere/ncm.hpp"
+#include "stratosphere/ncm/ncm_ids.hpp"
 
 /* At this point, just include the rest alphabetically. */
 /* TODO: Figure out optimal order. */
@@ -41,7 +41,9 @@
 #include "stratosphere/hos.hpp"
 #include "stratosphere/kvdb.hpp"
 #include "stratosphere/ldr.hpp"
+#include "stratosphere/lr.hpp"
 #include "stratosphere/map.hpp"
+#include "stratosphere/ncm.hpp"
 #include "stratosphere/patcher.hpp"
 #include "stratosphere/pm.hpp"
 #include "stratosphere/reg.hpp"

libraries/libstratosphere/include/stratosphere/cfg/cfg_types.hpp

@@ -15,8 +15,8 @@
  */
 
 #pragma once
-#include "../os/os_common_types.hpp"
+#include <stratosphere/os.hpp>
-#include "../ncm/ncm_types.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
 
 namespace ams::cfg {
 

libraries/libstratosphere/include/stratosphere/dmnt/dmnt_cheat_types.hpp

@@ -15,9 +15,9 @@
  */
 
 #pragma once
-#include "../os/os_common_types.hpp"
+#include <stratosphere/os.hpp>
-#include "../ncm/ncm_types.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
-#include "../sf/sf_buffer_tags.hpp"
+#include <stratosphere/sf/sf_buffer_tags.hpp>
 
 namespace ams::dmnt::cheat {
 

libraries/libstratosphere/include/stratosphere/fatal/fatal_types.hpp

@@ -16,8 +16,8 @@
 
 #pragma once
 #include <vapours.hpp>
-#include "../ncm/ncm_types.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
-#include "../sf/sf_buffer_tags.hpp"
+#include <stratosphere/sf/sf_buffer_tags.hpp>
 
 namespace ams::fatal {
 

libraries/libstratosphere/include/stratosphere/fs.hpp

@@ -19,11 +19,31 @@
 #include <stratosphere/fs/fsa/fs_ifile.hpp>
 #include <stratosphere/fs/fsa/fs_idirectory.hpp>
 #include <stratosphere/fs/fsa/fs_ifilesystem.hpp>
+#include <stratosphere/fs/impl/fs_filesystem_proxy_type.hpp>
+#include <stratosphere/fs/fsa/fs_registrar.hpp>
 #include <stratosphere/fs/fs_remote_filesystem.hpp>
 #include <stratosphere/fs/fs_readonly_filesystem_adapter.hpp>
 #include <stratosphere/fs/fs_istorage.hpp>
+#include <stratosphere/fs/fs_substorage.hpp>
+#include <stratosphere/fs/fs_memory_storage.hpp>
 #include <stratosphere/fs/fs_remote_storage.hpp>
 #include <stratosphere/fs/fs_file_storage.hpp>
 #include <stratosphere/fs/fs_query_range.hpp>
+#include <stratosphere/fs/impl/fs_common_mount_name.hpp>
+#include <stratosphere/fs/fs_mount.hpp>
 #include <stratosphere/fs/fs_path_tool.hpp>
 #include <stratosphere/fs/fs_path_utils.hpp>
+#include <stratosphere/fs/fs_romfs_filesystem.hpp>
+#include <stratosphere/fs/impl/fs_data.hpp>
+#include <stratosphere/fs/fs_system_data.hpp>
+#include <stratosphere/fs/fs_bis.hpp>
+#include <stratosphere/fs/fs_code.hpp>
+#include <stratosphere/fs/fs_content.hpp>
+#include <stratosphere/fs/fs_content_storage.hpp>
+#include <stratosphere/fs/fs_game_card.hpp>
+#include <stratosphere/fs/fs_sd_card.hpp>
+#include <stratosphere/fs/fs_signed_system_partition.hpp>
+#include <stratosphere/fs/fs_save_data_types.hpp>
+#include <stratosphere/fs/fs_save_data_management.hpp>
+#include <stratosphere/fs/fs_save_data_transaction.hpp>
+#include <stratosphere/fs/fs_system_save_data.hpp>

libraries/libstratosphere/include/stratosphere/fs/fs_bis.hpp

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/fs/fs_common.hpp>
+#include <stratosphere/fs/fs_istorage.hpp>
+
+namespace ams::fs {
+
+   enum class BisPartitionId {
+       /* Boot0 */
+       BootPartition1Root =  0,
+
+       /* Boot1 */
+       BootPartition2Root = 10,
+
+       /* Non-Boot */
+       UserDataRoot                     = 20,
+       BootConfigAndPackage2Part1       = 21,
+       BootConfigAndPackage2Part2       = 22,
+       BootConfigAndPackage2Part3       = 23,
+       BootConfigAndPackage2Part4       = 24,
+       BootConfigAndPackage2Part5       = 25,
+       BootConfigAndPackage2Part6       = 26,
+       CalibrationBinary                = 27,
+       CalibrationFile                  = 28,
+       SafeMode                         = 29,
+       User                             = 30,
+       System                           = 31,
+       SystemProperEncryption           = 32,
+       SystemProperPartition            = 33,
+       SignedSystemPartitionOnSafeMode  = 34,
+   };
+
+   const char *GetBisMountName(BisPartitionId id);
+
+   Result MountBis(BisPartitionId id, const char *root_path);
+   Result MountBis(const char *name, BisPartitionId id);
+
+   void SetBisRootForHost(BisPartitionId id, const char *root_path);
+
+   Result OpenBisPartition(std::unique_ptr<fs::IStorage> *out, BisPartitionId id);
+
+   Result InvalidateBisCache();
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_code.hpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
+
+namespace ams::fs {
+
+    Result MountCode(const char *name, const char *path, ncm::ProgramId program_id);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_common.hpp

@@ -15,13 +15,34 @@
  */
 #pragma once
 #include <vapours.hpp>
-#include "../os.hpp"
+#include <stratosphere/os.hpp>
-#include "../ncm.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
-#include "../sf.hpp"
+#include <stratosphere/sf.hpp>
 
 namespace ams::fs {
 
-    /* TODO: Better place for this? */
+    struct Int64 {
-    constexpr inline size_t MountNameLengthMax = 15;
+        u32 low;
+        u32 high;
 
-}
+        constexpr ALWAYS_INLINE void Set(s64 v) {
+            this->low  = static_cast<u32>((v & static_cast<u64>(0x00000000FFFFFFFFul)) >>  0);
+            this->high = static_cast<u32>((v & static_cast<u64>(0xFFFFFFFF00000000ul)) >> 32);
+        }
+
+        constexpr ALWAYS_INLINE s64 Get() const {
+            return (static_cast<s64>(this->high) << 32) | (static_cast<s64>(this->low));
+        }
+
+        constexpr ALWAYS_INLINE Int64 &operator=(s64 v) {
+            this->Set(v);
+            return *this;
+        }
+
+        constexpr ALWAYS_INLINE operator s64() const {
+            return this->Get();
+        }
+    };
+    static_assert(std::is_pod<Int64>::value);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_content.hpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
+
+namespace ams::fs {
+
+    enum ContentType {
+        ContentType_Meta    = 0,
+        ContentType_Control = 1,
+        ContentType_Manual  = 2,
+        ContentType_Logo    = 3,
+        ContentType_Data    = 4,
+    };
+
+    Result MountContent(const char *name, const char *path, ContentType content_type);
+    Result MountContent(const char *name, const char *path, ncm::ProgramId id, ContentType content_type);
+    Result MountContent(const char *name, const char *path, ncm::DataId id, ContentType content_type);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_content_storage.hpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    enum class ContentStorageId : u32 {
+        System = 0,
+        User   = 1,
+        SdCard = 2,
+    };
+
+    constexpr inline const char * const ContentStorageDirectoryName = "Contents";
+
+    const char *GetContentStorageMountName(ContentStorageId id);
+
+    Result MountContentStorage(ContentStorageId id);
+    Result MountContentStorage(const char *name, ContentStorageId id);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_dbm_hierarchical_rom_file_table.hpp

@@ -0,0 +1,200 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_dbm_rom_types.hpp"
+#include "fs_dbm_rom_path_tool.hpp"
+#include "fs_dbm_rom_key_value_storage.hpp"
+
+namespace ams::fs {
+
+    class HierarchicalRomFileTable {
+        public:
+            using Position = u32;
+
+            struct FindPosition {
+                Position next_dir;
+                Position next_file;
+            };
+            static_assert(std::is_pod<FindPosition>::value);
+
+            using DirectoryInfo = RomDirectoryInfo;
+            using FileInfo      = RomFileInfo;
+
+            static constexpr RomFileId ConvertToFileId(Position pos) {
+                return static_cast<RomFileId>(pos);
+            }
+        private:
+            static constexpr inline Position InvalidPosition = ~Position();
+            static constexpr inline Position RootPosition = 0;
+            static constexpr inline size_t ReservedDirectoryCount = 1;
+
+            static constexpr RomDirectoryId ConvertToDirectoryId(Position pos) {
+                return static_cast<RomDirectoryId>(pos);
+            }
+
+            static constexpr Position ConvertToPosition(RomDirectoryId id) {
+                return static_cast<Position>(id);
+            }
+
+            static_assert(std::is_same<RomDirectoryId, RomFileId>::value);
+
+            struct RomDirectoryEntry {
+                Position next;
+                Position dir;
+                Position file;
+            };
+            static_assert(std::is_pod<RomDirectoryEntry>::value);
+
+            struct RomFileEntry {
+                Position next;
+                FileInfo info;
+            };
+            static_assert(std::is_pod<RomFileEntry>::value);
+
+            static constexpr inline u32 MaxKeyLength = RomPathTool::MaxPathLength;
+
+            template<typename ImplKeyType, typename ClientKeyType, typename ValueType>
+            class EntryMapTable : public RomKeyValueStorage<ImplKeyType, ValueType, MaxKeyLength> {
+                public:
+                    using ImplKey   = ImplKeyType;
+                    using ClientKey = ClientKeyType;
+                    using Value     = ValueType;
+                    using Position  = HierarchicalRomFileTable::Position;
+                    using Base      = RomKeyValueStorage<ImplKeyType, ValueType, MaxKeyLength>;
+                public:
+                    Result Add(Position *out, const ClientKeyType &key, const Value &value) {
+                        return Base::AddImpl(out, key.key, key.Hash(), key.name.path, key.name.length * sizeof(RomPathChar), value);
+                    }
+
+                    Result Get(Position *out_pos, Value *out_val, const ClientKeyType &key) {
+                        return Base::GetImpl(out_pos, out_val, key.key, key.Hash(), key.name.path, key.name.length * sizeof(RomPathChar));
+                    }
+
+                    Result GetByPosition(ImplKey *out_key, Value *out_val, Position pos) {
+                        return Base::GetByPosition(out_key, out_val, pos);
+                    }
+
+                    Result GetByPosition(ImplKey *out_key, Value *out_val, void *out_aux, size_t *out_aux_size, Position pos) {
+                        return Base::GetByPosition(out_key, out_val, out_aux, out_aux_size, pos);
+                    }
+
+                    Result SetByPosition(Position pos, const Value &value) {
+                        return Base::SetByPosition(pos, value);
+                    }
+            };
+
+            struct RomEntryKey {
+                Position parent;
+
+                bool IsEqual(const RomEntryKey &rhs, const void *aux_lhs, size_t aux_lhs_size, const void *aux_rhs, size_t aux_rhs_size) const {
+                    if (this->parent != rhs.parent) {
+                        return false;
+                    }
+                    if (aux_lhs_size != aux_rhs_size) {
+                        return false;
+                    }
+                    return RomPathTool::IsEqualPath(reinterpret_cast<const RomPathChar *>(aux_lhs), reinterpret_cast<const RomPathChar *>(aux_rhs), aux_lhs_size / sizeof(RomPathChar));
+                }
+            };
+            static_assert(std::is_pod<RomEntryKey>::value);
+
+            struct EntryKey {
+                RomEntryKey key;
+                RomPathTool::RomEntryName name;
+
+                constexpr u32 Hash() const {
+                    u32 hash = this->key.parent ^ 123456789;
+                    const RomPathChar *name = this->name.path;
+                    const RomPathChar *end  = name + this->name.length;
+                    while (name < end) {
+                        const u32 cur = static_cast<u32>(static_cast<std::make_unsigned<RomPathChar>::type>(*(name++)));
+                        hash = ((hash >> 5) | (hash << 27)) ^ cur;
+                    }
+                    return hash;
+                }
+            };
+            static_assert(std::is_pod<EntryKey>::value);
+
+            using DirectoryEntryMapTable = EntryMapTable<RomEntryKey, EntryKey, RomDirectoryEntry>;
+            using FileEntryMapTable      = EntryMapTable<RomEntryKey, EntryKey, RomFileEntry>;
+        private:
+            DirectoryEntryMapTable dir_table;
+            FileEntryMapTable file_table;
+        public:
+            static s64 QueryDirectoryEntryStorageSize(u32 count);
+            static s64 QueryDirectoryEntryBucketStorageSize(s64 count);
+            static s64 QueryFileEntryStorageSize(u32 count);
+            static s64 QueryFileEntryBucketStorageSize(s64 count);
+
+            static Result Format(SubStorage dir_bucket, SubStorage file_bucket);
+        public:
+            HierarchicalRomFileTable();
+
+            constexpr u32 GetDirectoryEntryCount() const {
+                return this->dir_table.GetEntryCount();
+            }
+
+            constexpr u32 GetFileEntryCount() const {
+                return this->file_table.GetEntryCount();
+            }
+
+            Result Initialize(SubStorage dir_bucket, SubStorage dir_entry, SubStorage file_bucket, SubStorage file_entry);
+            void Finalize();
+
+            Result CreateRootDirectory();
+            Result CreateDirectory(RomDirectoryId *out, const RomPathChar *path, const DirectoryInfo &info);
+            Result CreateFile(RomFileId *out, const RomPathChar *path, const FileInfo &info);
+            Result ConvertPathToDirectoryId(RomDirectoryId *out, const RomPathChar *path);
+            Result ConvertPathToFileId(RomFileId *out, const RomPathChar *path);
+
+            Result GetDirectoryInformation(DirectoryInfo *out, const RomPathChar *path);
+            Result GetDirectoryInformation(DirectoryInfo *out, RomDirectoryId id);
+
+            Result OpenFile(FileInfo *out, const RomPathChar *path);
+            Result OpenFile(FileInfo *out, RomFileId id);
+
+            Result FindOpen(FindPosition *out, const RomPathChar *path);
+            Result FindOpen(FindPosition *out, RomDirectoryId id);
+
+            Result FindNextDirectory(RomPathChar *out, FindPosition *find, size_t length);
+            Result FindNextFile(RomPathChar *out, FindPosition *find, size_t length);
+
+            Result QueryRomFileSystemSize(s64 *out_dir_entry_size, s64 *out_file_entry_size);
+        private:
+            Result GetGrandParent(Position *out_pos, EntryKey *out_dir_key, RomDirectoryEntry *out_dir_entry, Position pos, RomPathTool::RomEntryName name, const RomPathChar *path);
+
+            Result FindParentDirectoryRecursive(Position *out_pos, EntryKey *out_dir_key, RomDirectoryEntry *out_dir_entry, RomPathTool::PathParser *parser, const RomPathChar *path);
+
+            Result FindPathRecursive(EntryKey *out_key, RomDirectoryEntry *out_dir_entry, bool is_dir, const RomPathChar *path);
+            Result FindDirectoryRecursive(EntryKey *out_key, RomDirectoryEntry *out_dir_entry, const RomPathChar *path);
+            Result FindFileRecursive(EntryKey *out_key, RomDirectoryEntry *out_dir_entry, const RomPathChar *path);
+
+            Result CheckSameEntryExists(const EntryKey &key, Result if_exists);
+
+            Result GetDirectoryEntry(Position *out_pos, RomDirectoryEntry *out_entry, const EntryKey &key);
+            Result GetDirectoryEntry(RomDirectoryEntry *out_entry, RomDirectoryId id);
+
+            Result GetFileEntry(Position *out_pos, RomFileEntry *out_entry, const EntryKey &key);
+            Result GetFileEntry(RomFileEntry *out_entry, RomFileId id);
+
+            Result GetDirectoryInformation(DirectoryInfo *out, const EntryKey &key);
+
+            Result OpenFile(FileInfo *out, const EntryKey &key);
+
+            Result FindOpen(FindPosition *out, const EntryKey &key);
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_dbm_rom_key_value_storage.hpp

@@ -0,0 +1,380 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_dbm_rom_types.hpp"
+#include "fs_substorage.hpp"
+
+namespace ams::fs {
+
+    template<typename KeyType, typename ValueType, size_t MaxAuxiliarySize>
+    class RomKeyValueStorage {
+        public:
+            using Key         = KeyType;
+            using Value       = ValueType;
+            using Position    = u32;
+            using BucketIndex = s64;
+
+            struct FindIndex {
+                BucketIndex ind;
+                Position pos;
+            };
+            static_assert(std::is_pod<FindIndex>::value);
+        private:
+            static constexpr inline Position InvalidPosition = ~Position();
+
+            struct Element {
+                Key key;
+                Value value;
+                Position next;
+                u32 size;
+            };
+            static_assert(std::is_pod<Element>::value);
+        private:
+            s64 bucket_count;
+            SubStorage bucket_storage;
+            SubStorage kv_storage;
+            s64 total_entry_size;
+            u32 entry_count;
+        public:
+            static constexpr s64 QueryBucketStorageSize(s64 num) {
+                return num * sizeof(Position);
+            }
+
+            static constexpr s64 QueryBucketCount(s64 size) {
+                return size / sizeof(Position);
+            }
+
+            static constexpr s64 QueryKeyValueStorageSize(u32 num) {
+                return num * sizeof(Element);
+            }
+
+            static Result Format(SubStorage bucket, s64 count) {
+                const Position pos = InvalidPosition;
+                for (s64 i = 0; i < count; i++) {
+                    R_TRY(bucket.Write(i * sizeof(pos), std::addressof(pos), sizeof(pos)));
+                }
+                return ResultSuccess();
+            }
+        public:
+            RomKeyValueStorage() : bucket_count(), bucket_storage(), kv_storage(), total_entry_size(), entry_count() { /* ... */ }
+
+            Result Initialize(const SubStorage &bucket, s64 count, const SubStorage &kv) {
+                AMS_ASSERT(count > 0);
+                this->bucket_storage = bucket;
+                this->kv_storage     = kv;
+                this->bucket_count   = count;
+                return ResultSuccess();
+            }
+
+            void Finalize() {
+                this->bucket_storage = SubStorage();
+                this->kv_storage     = SubStorage();
+                this->bucket_count   = 0;
+            }
+
+            s64 GetTotalEntrySize() const {
+                return this->total_entry_size;
+            }
+
+            Result GetFreeSize(s64 *out) {
+                AMS_ASSERT(out != nullptr);
+                s64 kv_size = 0;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+                *out = kv_size - this->total_entry_size;
+                return ResultSuccess();
+            }
+
+            constexpr u32 GetEntryCount() const {
+                return this->entry_count;
+            }
+
+            Result Add(const Key &key, u32 hash_key, const void *aux, size_t aux_size, const Value &value) {
+                AMS_ASSERT(aux != nullptr);
+                AMS_ASSERT(aux_size <= MaxAuxiliarySize);
+                Position pos;
+                return this->AddImpl(std::addressof(pos), key, hash_key, aux, aux_size, value);
+            }
+
+            Result Get(Value *out, const Key &key, u32 hash_key, const void *aux, size_t aux_size) {
+                AMS_ASSERT(aux != nullptr);
+                AMS_ASSERT(aux_size <= MaxAuxiliarySize);
+                Position pos;
+                return this->GetImpl(std::addressof(pos), out, key, hash_key, aux, aux_size);
+            }
+
+            Result FindOpen(FindIndex *out) const {
+                AMS_ASSERT(out != nullptr);
+
+                out->ind = static_cast<BucketIndex>(-1);
+                out->pos = InvalidPosition;
+                return ResultSuccess();
+            }
+
+            Result FindNext(Key *out_key, Value *out_val, FindIndex *find) {
+                AMS_ASSERT(out_key != nullptr);
+                AMS_ASSERT(out_val != nullptr);
+                AMS_ASSERT(find != nullptr);
+
+                BucketIndex ind = find->ind;
+                R_UNLESS((ind < this->bucket_count) || ind == static_cast<BucketIndex>(-1), fs::ResultDbmFindKeyFinished());
+
+                s64 kv_size;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+
+                while (true) {
+                    if (find->pos != InvalidPosition) {
+                        Element elem;
+                        R_TRY(this->ReadKeyValue(std::addressof(elem), find->pos));
+
+                        AMS_ASSERT(elem.next == InvalidPosition || elem.next < kv_size);
+                        find->pos = elem.next;
+                        *out_key = elem.key;
+                        *out_val = elem.val;
+                        return ResultSuccess();
+                    }
+
+                    while (true) {
+                        ind++;
+                        if (ind == this->bucket_count) {
+                            find->ind = ind;
+                            find->pos = InvalidPosition;
+                            return fs::ResultDbmFindKeyFinished();
+                        }
+
+                        Position pos;
+                        R_TRY(this->ReadBucket(std::addressof(pos), ind));
+                        AMS_ASSERT(pos == InvalidPosition || pos < kv_size);
+
+                        if (pos != InvalidPosition) {
+                            find->ind = ind;
+                            find->pos = pos;
+                            break;
+                        }
+                    }
+                }
+            }
+        protected:
+            Result AddImpl(Position *out, const Key &key, u32 hash_key, const void *aux, size_t aux_size, const Value &value) {
+                AMS_ASSERT(out != nullptr);
+                AMS_ASSERT(aux != nullptr);
+                AMS_ASSERT(this->bucket_count > 0);
+
+                {
+                    Position pos, prev_pos;
+                    Element elem;
+
+                    const Result find_res = this->FindImpl(std::addressof(pos), std::addressof(prev_pos), std::addressof(elem), key, hash_key, aux, aux_size);
+                    R_UNLESS(R_FAILED(find_res),                           fs::ResultDbmAlreadyExists());
+                    R_UNLESS(fs::ResultDbmKeyNotFound::Includes(find_res), find_res);
+                }
+
+                Position pos;
+                R_TRY(this->AllocateEntry(std::addressof(pos), aux_size));
+
+                Position next_pos;
+                R_TRY(this->LinkEntry(std::addressof(next_pos), pos, hash_key));
+
+                const Element elem = { key, value, next_pos, static_cast<u32>(aux_size) };
+                R_TRY(this->WriteKeyValue(std::addressof(elem), pos, aux, aux_size));
+
+                *out = pos;
+                this->entry_count++;
+
+                return ResultSuccess();
+            }
+
+            Result GetImpl(Position *out_pos, Value *out_val, const Key &key, u32 hash_key, const void *aux, size_t aux_size) {
+                AMS_ASSERT(out_pos != nullptr);
+                AMS_ASSERT(out_val != nullptr);
+                AMS_ASSERT(aux     != nullptr);
+
+                Position pos, prev_pos;
+                Element elem;
+                R_TRY(this->FindImpl(std::addressof(pos), std::addressof(prev_pos), std::addressof(elem), key, hash_key, aux, aux_size));
+
+                *out_pos = pos;
+                *out_val = elem.value;
+                return ResultSuccess();
+            }
+
+            Result GetByPosition(Key *out_key, Value *out_val, Position pos) {
+                AMS_ASSERT(out_key != nullptr);
+                AMS_ASSERT(out_val != nullptr);
+
+                Element elem;
+                R_TRY(this->ReadKeyValue(std::addressof(elem), pos));
+
+                *out_key = elem.key;
+                *out_val = elem.value;
+                return ResultSuccess();
+            }
+
+            Result GetByPosition(Key *out_key, Value *out_val, void *out_aux, size_t *out_aux_size, Position pos) {
+                AMS_ASSERT(out_key != nullptr);
+                AMS_ASSERT(out_val != nullptr);
+                AMS_ASSERT(out_aux != nullptr);
+                AMS_ASSERT(out_aux_size != nullptr);
+
+                Element elem;
+                R_TRY(this->ReadKeyValue(std::addressof(elem), out_aux, out_aux_size, pos));
+
+                *out_key = elem.key;
+                *out_val = elem.value;
+                return ResultSuccess();
+            }
+
+            Result SetByPosition(Position pos, const Value &value) {
+                Element elem;
+                R_TRY(this->ReadKeyValue(std::addressof(elem), pos));
+                elem.value = value;
+                return this->WriteKeyValue(std::addressof(elem), pos, nullptr, 0);
+            }
+        private:
+            BucketIndex HashToBucket(u32 hash_key) const {
+                return hash_key % this->bucket_count;
+            }
+
+            Result FindImpl(Position *out_pos, Position *out_prev, Element *out_elem, const Key &key, u32 hash_key, const void *aux, size_t aux_size) {
+                AMS_ASSERT(out_pos != nullptr);
+                AMS_ASSERT(out_prev != nullptr);
+                AMS_ASSERT(out_elem != nullptr);
+                AMS_ASSERT(aux != nullptr);
+                AMS_ASSERT(this->bucket_count > 0);
+
+                *out_pos = 0;
+                *out_prev = 0;
+
+                const BucketIndex ind = HashToBucket(hash_key);
+
+                Position cur;
+                R_TRY(this->ReadBucket(std::addressof(cur), ind));
+
+                s64 kv_size;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+                AMS_ASSERT(cur == InvalidPosition || cur < kv_size);
+
+                R_UNLESS(cur != InvalidPosition, fs::ResultDbmKeyNotFound());
+
+                u8 *buf = static_cast<u8 *>(::ams::fs::impl::Allocate(MaxAuxiliarySize));
+                R_UNLESS(buf != nullptr, fs::ResultAllocationFailureInDbmRomKeyValueStorage());
+                ON_SCOPE_EXIT { ::ams::fs::impl::Deallocate(buf, MaxAuxiliarySize); };
+
+                while (true) {
+                    size_t cur_aux_size;
+                    R_TRY(this->ReadKeyValue(out_elem, buf, std::addressof(cur_aux_size), cur));
+
+                    if (key.IsEqual(out_elem->key, aux, aux_size, buf, cur_aux_size)) {
+                        *out_pos = cur;
+                        return ResultSuccess();
+                    }
+
+                    *out_prev = cur;
+                    cur = out_elem->next;
+                    R_UNLESS(cur != InvalidPosition, fs::ResultDbmKeyNotFound());
+                }
+            }
+
+            Result AllocateEntry(Position *out, size_t aux_size) {
+                AMS_ASSERT(out != nullptr);
+
+                s64 kv_size;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+                const size_t end_pos = this->total_entry_size + sizeof(Element) + aux_size;
+                R_UNLESS(end_pos <= static_cast<size_t>(kv_size), fs::ResultDbmKeyFull());
+
+                *out = static_cast<Position>(this->total_entry_size);
+
+                this->total_entry_size = util::AlignUp(static_cast<s64>(end_pos), s64(4));
+                return ResultSuccess();
+            }
+
+            Result LinkEntry(Position *out, Position pos, u32 hash_key) {
+                AMS_ASSERT(out != nullptr);
+
+                const BucketIndex ind = HashToBucket(hash_key);
+
+                Position next;
+                R_TRY(this->ReadBucket(std::addressof(next), ind));
+
+                s64 kv_size;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+                AMS_ASSERT(next == InvalidPosition || next < kv_size);
+
+                R_TRY(this->WriteBucket(pos, ind));
+
+                *out = next;
+                return ResultSuccess();
+            }
+
+            Result ReadBucket(Position *out, BucketIndex ind) {
+                AMS_ASSERT(out != nullptr);
+                AMS_ASSERT(ind < this->bucket_count);
+
+                const s64 offset = ind * sizeof(Position);
+                return this->bucket_storage.Read(offset, out, sizeof(*out));
+            }
+
+            Result WriteBucket(Position pos, BucketIndex ind) {
+                AMS_ASSERT(ind < this->bucket_count);
+
+                const s64 offset = ind * sizeof(Position);
+                return this->bucket_storage.Write(offset, std::addressof(pos), sizeof(pos));
+            }
+
+            Result ReadKeyValue(Element *out, Position pos) {
+                AMS_ASSERT(out != nullptr);
+
+                s64 kv_size;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+                AMS_ASSERT(pos < kv_size);
+
+                return this->kv_storage.Read(pos, out, sizeof(*out));
+            }
+
+            Result ReadKeyValue(Element *out, void *out_aux, size_t *out_aux_size, Position pos) {
+                AMS_ASSERT(out != nullptr);
+                AMS_ASSERT(out_aux != nullptr);
+                AMS_ASSERT(out_aux_size != nullptr);
+
+                R_TRY(this->ReadKeyValue(out, pos));
+
+                *out_aux_size = out->size;
+                if (out->size > 0) {
+                    R_TRY(this->kv_storage.Read(pos + sizeof(*out), out_aux, out->size));
+                }
+
+                return ResultSuccess();
+            }
+
+            Result WriteKeyValue(const Element *elem, Position pos, const void *aux, size_t aux_size) {
+                AMS_ASSERT(elem != nullptr);
+                AMS_ASSERT(aux != nullptr);
+
+                s64 kv_size;
+                R_TRY(this->kv_storage.GetSize(std::addressof(kv_size)));
+                AMS_ASSERT(pos < kv_size);
+
+                R_TRY(this->kv_storage.Write(pos, elem, sizeof(*elem)));
+
+                if (aux != nullptr && aux_size > 0) {
+                    R_TRY(this->kv_storage.Write(pos + sizeof(*elem), aux, aux_size));
+                }
+
+                return ResultSuccess();
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_dbm_rom_path_tool.hpp

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_dbm_rom_types.hpp"
+
+namespace ams::fs {
+
+    namespace RomPathTool {
+
+        constexpr inline u32 MaxPathLength = 0x300;
+
+        struct RomEntryName {
+            size_t length;
+            const RomPathChar *path;
+        };
+        static_assert(std::is_pod<RomEntryName>::value);
+
+        constexpr void InitializeRomEntryName(RomEntryName *entry) {
+            AMS_ABORT_UNLESS(entry != nullptr);
+            entry->length = 0;
+        }
+
+        constexpr inline bool IsSeparator(RomPathChar c) {
+            return c == RomStringTraits::DirectorySeparator;
+        }
+
+        constexpr inline bool IsNullTerminator(RomPathChar c) {
+            return c == RomStringTraits::NullTerminator;
+        }
+
+        constexpr inline bool IsDot(RomPathChar c) {
+            return c == RomStringTraits::Dot;
+        }
+
+        constexpr inline bool IsCurrentDirectory(const RomEntryName &name) {
+            return name.length == 1 && IsDot(name.path[0]);
+        }
+
+        constexpr inline bool IsCurrentDirectory(const RomPathChar *p, size_t length) {
+            AMS_ABORT_UNLESS(p != nullptr);
+            return length == 1 && IsDot(p[0]);
+        }
+
+        constexpr inline bool IsCurrentDirectory(const RomPathChar *p) {
+            AMS_ABORT_UNLESS(p != nullptr);
+            return IsDot(p[0]) && IsNullTerminator(p[1]);
+        }
+
+        constexpr inline bool IsParentDirectory(const RomEntryName &name) {
+            return name.length == 2 && IsDot(name.path[0]) && IsDot(name.path[1]);
+        }
+
+        constexpr inline bool IsParentDirectory(const RomPathChar *p) {
+            AMS_ABORT_UNLESS(p != nullptr);
+            return IsDot(p[0]) && IsDot(p[1]) && IsNullTerminator(p[2]);
+        }
+
+        constexpr inline bool IsParentDirectory(const RomPathChar *p, size_t length) {
+            AMS_ABORT_UNLESS(p != nullptr);
+            return length == 2 && IsDot(p[0]) && IsDot(p[1]);
+        }
+
+        constexpr inline bool IsEqualPath(const RomPathChar *lhs, const RomPathChar *rhs, size_t length) {
+            AMS_ABORT_UNLESS(lhs != nullptr);
+            AMS_ABORT_UNLESS(rhs != nullptr);
+            return std::strncmp(lhs, rhs, length) == 0;
+        }
+
+        constexpr inline bool IsEqualName(const RomEntryName &lhs, const RomPathChar *rhs) {
+            AMS_ABORT_UNLESS(rhs != nullptr);
+            if (strnlen(rhs, MaxPathLength) != lhs.length) {
+                return false;
+            }
+            return IsEqualPath(lhs.path, rhs, lhs.length);
+        }
+
+        constexpr inline bool IsEqualName(const RomEntryName &lhs, const RomEntryName &rhs) {
+            if (lhs.length != rhs.length) {
+                return false;
+            }
+            return IsEqualPath(lhs.path, rhs.path, lhs.length);
+        }
+
+        Result GetParentDirectoryName(RomEntryName *out, const RomEntryName &cur, const RomPathChar *p);
+
+        class PathParser {
+            private:
+                const RomPathChar *prev_path_start;
+                const RomPathChar *prev_path_end;
+                const RomPathChar *next_path;
+                bool finished;
+            public:
+                constexpr PathParser() : prev_path_start(), prev_path_end(), next_path(), finished() { /* ... */ }
+
+                Result Initialize(const RomPathChar *path);
+                void Finalize();
+
+                bool IsFinished() const;
+                bool IsDirectoryPath() const;
+
+                Result GetAsDirectoryName(RomEntryName *out) const;
+                Result GetAsFileName(RomEntryName *out) const;
+
+                Result GetNextDirectoryName(RomEntryName *out);
+        };
+
+    }
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_dbm_rom_types.hpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    using RomPathChar    = char;
+    using RomFileId      = s32;
+    using RomDirectoryId = s32;
+
+    struct RomFileSystemInformation {
+        s64 size;
+        s64 directory_bucket_offset;
+        s64 directory_bucket_size;
+        s64 directory_entry_offset;
+        s64 directory_entry_size;
+        s64 file_bucket_offset;
+        s64 file_bucket_size;
+        s64 file_entry_offset;
+        s64 file_entry_size;
+        s64 body_offset;
+    };
+    static_assert(std::is_pod<RomFileSystemInformation>::value);
+    static_assert(sizeof(RomFileSystemInformation) == 0x50);
+
+    struct RomDirectoryInfo {
+        /* ... */
+    };
+    static_assert(std::is_pod<RomDirectoryInfo>::value);
+
+    struct RomFileInfo {
+        Int64 offset;
+        Int64 size;
+    };
+    static_assert(std::is_pod<RomFileInfo>::value);
+
+    namespace RomStringTraits {
+
+        constexpr inline char DirectorySeparator = '/';
+        constexpr inline char NullTerminator     = '\x00';
+        constexpr inline char Dot                = '.';
+
+    }
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_directory.hpp

@@ -22,4 +22,12 @@ namespace ams::fs {
 
     using DirectoryEntry = ::FsDirectoryEntry;
 
+    struct DirectoryHandle {
+        void *handle;
+    };
+
+    Result ReadDirectory(s64 *out_count, DirectoryEntry *out_entries, DirectoryHandle handle, s64 max_entries);
+    Result GetDirectoryEntryCount(s64 *out, DirectoryHandle handle);
+    void CloseDirectory(DirectoryHandle handle);
+
 }

libraries/libstratosphere/include/stratosphere/fs/fs_file.hpp

@@ -60,4 +60,19 @@ namespace ams::fs {
 
     static_assert(std::is_pod<WriteOption>::value && sizeof(WriteOption) == sizeof(u32));
 
+    struct FileHandle {
+        void *handle;
+    };
+
+    Result ReadFile(FileHandle handle, s64 offset, void *buffer, size_t size, const fs::ReadOption &option);
+    Result ReadFile(FileHandle handle, s64 offset, void *buffer, size_t size);
+    Result ReadFile(size_t *out, FileHandle handle, s64 offset, void *buffer, size_t size, const fs::ReadOption &option);
+    Result ReadFile(size_t *out, FileHandle handle, s64 offset, void *buffer, size_t size);
+    Result GetFileSize(s64 *out, FileHandle handle);
+    Result FlushFile(FileHandle handle);
+    Result WriteFile(FileHandle handle, s64 offset, const void *buffer, size_t size, const fs::WriteOption &option);
+    Result SetFileSize(FileHandle handle, s64 size);
+    int GetFileOpenMode(FileHandle handle);
+    void CloseFile(FileHandle handle);
+
 }

libraries/libstratosphere/include/stratosphere/fs/fs_filesystem.hpp

@@ -18,6 +18,12 @@
 
 namespace ams::fs {
 
+    namespace fsa {
+
+        class IFile;
+
+    }
+
     enum OpenMode {
         OpenMode_Read   = ::FsOpenMode_Read,
         OpenMode_Write  = ::FsOpenMode_Write,
@@ -49,4 +55,27 @@ namespace ams::fs {
 
     using FileTimeStampRaw = ::FsTimeStampRaw;
 
+    struct FileHandle;
+    struct DirectoryHandle;
+
+    Result CreateFile(const char *path, s64 size);
+    Result CreateFile(const char* path, s64 size, int option);
+    Result DeleteFile(const char *path);
+    Result CreateDirectory(const char *path);
+    Result DeleteDirectory(const char *path);
+    Result DeleteDirectoryRecursively(const char *path);
+    Result RenameFile(const char *old_path, const char *new_path);
+    Result RenameDirectory(const char *old_path, const char *new_path);
+    Result GetEntryType(DirectoryEntryType *out, const char *path);
+    Result OpenFile(FileHandle *out_file, const char *path, int mode);
+    Result OpenDirectory(DirectoryHandle *out_dir, const char *path, int mode);
+    Result CleanDirectoryRecursively(const char *path);
+    Result GetFreeSpaceSize(s64 *out, const char *path);
+    Result GetTotalSpaceSize(s64 *out, const char *path);
+
+    Result SetConcatenationFileAttribute(const char *path);
+    Result GetFileTimeStampRaw(FileTimeStampRaw *out, const char *path);
+
+    Result OpenFile(FileHandle *out, std::unique_ptr<fsa::IFile> &&file, int mode);
+
 }

libraries/libstratosphere/include/stratosphere/fs/fs_game_card.hpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    enum class GameCardPartition {
+        Update = 0,
+        Normal = 1,
+        Secure = 2,
+        Logo   = 3,
+    };
+
+    enum class GameCardPartitionRaw {
+        NormalReadable,
+        SecureReadable,
+        RootWriteable,
+    };
+
+    enum class GameCardAttribute : u8 {
+        AutoBootFlag                         = (1 << 0),
+        HistoryEraseFlag                     = (1 << 1),
+        RepairToolFlag                       = (1 << 2),
+        DifferentRegionCupToTerraDeviceFlag  = (1 << 3),
+        DifferentRegionCupToGlobalDeviceFlag = (1 << 4),
+    };
+
+    using GameCardHandle = u32;
+
+    Result GetGameCardHandle(GameCardHandle *out);
+    Result MountGameCardPartition(const char *name, GameCardHandle handle, GameCardPartition partition);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_istorage.hpp

@@ -26,21 +26,15 @@ namespace ams::fs {
 
             virtual Result Read(s64 offset, void *buffer, size_t size) = 0;
 
-            virtual Result Write(s64 offset, const void *buffer, size_t size) {
+            virtual Result Write(s64 offset, const void *buffer, size_t size) = 0;
-                return fs::ResultUnsupportedOperation();
-            }
 
             virtual Result Flush() = 0;
 
-            virtual Result SetSize(s64 size) {
+            virtual Result SetSize(s64 size) = 0;
-                return fs::ResultUnsupportedOperation();
-            }
 
             virtual Result GetSize(s64 *out) = 0;
 
-            virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) {
+            virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) = 0;
-                return fs::ResultUnsupportedOperation();
-            }
 
             virtual Result OperateRange(OperationId op_id, s64 offset, s64 size) {
                 return this->OperateRange(nullptr, 0, op_id, offset, size, nullptr, 0);
@@ -86,21 +80,31 @@ namespace ams::fs {
 
             virtual ~ReadOnlyStorageAdapter() { /* ... */ }
         public:
-            virtual Result Read(s64 offset, void *buffer, size_t size) {
+            virtual Result Read(s64 offset, void *buffer, size_t size) override {
                 return this->storage->Read(offset, buffer, size);
             }
 
-            virtual Result Flush() {
+            virtual Result Flush() override {
                 return this->storage->Flush();
             }
 
-            virtual Result GetSize(s64 *out) {
+            virtual Result GetSize(s64 *out) override {
                 return this->storage->GetSize(out);
             }
 
             virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override {
                 return this->storage->OperateRange(dst, dst_size, op_id, offset, size, src, src_size);
             }
+
+            virtual Result Write(s64 offset, const void *buffer, size_t size) override {
+                /* TODO: Better result? Is it possible to get a more specific one? */
+                return fs::ResultUnsupportedOperation();
+            }
+
+            virtual Result SetSize(s64 size) override {
+                /* TODO: Better result? Is it possible to get a more specific one? */
+                return fs::ResultUnsupportedOperation();
+            }
     };
 
 }

libraries/libstratosphere/include/stratosphere/fs/fs_memory_management.hpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    using AllocateFunction   = void *(*)(size_t);
+    using DeallocateFunction = void (*)(void *, size_t);
+
+    void SetAllocator(AllocateFunction allocator, DeallocateFunction deallocator);
+
+    namespace impl {
+
+        void *Allocate(size_t size);
+        void Deallocate(void *ptr, size_t size);
+
+        class Deleter {
+            private:
+                size_t size;
+            public:
+                Deleter() : size() { /* ... */ }
+                explicit Deleter(size_t sz) : size(sz) { /* ... */ }
+
+                void operator()(void *ptr) const {
+                    ::ams::fs::impl::Deallocate(ptr, this->size);
+                }
+        };
+
+        template<typename T>
+        std::unique_ptr<T, Deleter> MakeUnique() {
+            static_assert(std::is_pod<T>::value);
+            return std::unique_ptr<T, Deleter>(static_cast<T *>(::ams::fs::impl::Allocate(sizeof(T))), Deleter(sizeof(T)));
+        }
+
+    }
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_memory_storage.hpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "impl/fs_newable.hpp"
+#include "fs_istorage.hpp"
+#include "fs_query_range.hpp"
+
+namespace ams::fs {
+
+    class MemoryStorage : public ::ams::fs::IStorage, public ::ams::fs::impl::Newable {
+        private:
+            u8 * const buf;
+            const s64 size;
+        public:
+            MemoryStorage(void *b, s64 sz) : buf(static_cast<u8 *>(b)), size(sz) { /* .. */ }
+        public:
+            virtual Result Read(s64 offset, void *buffer, size_t size) override {
+                /* Succeed immediately on zero-sized read. */
+                R_SUCCEED_IF(size == 0);
+
+                /* Validate arguments. */
+                R_UNLESS(buffer != nullptr,                                fs::ResultNullptrArgument());
+                R_UNLESS(IStorage::IsRangeValid(offset, size, this->size), fs::ResultOutOfRange());
+
+                /* Copy from memory. */
+                std::memcpy(buffer, this->buf + offset, size);
+                return ResultSuccess();
+            }
+
+            virtual Result Write(s64 offset, const void *buffer, size_t size) override {
+                /* Succeed immediately on zero-sized write. */
+                R_SUCCEED_IF(size == 0);
+
+                /* Validate arguments. */
+                R_UNLESS(buffer != nullptr,                                fs::ResultNullptrArgument());
+                R_UNLESS(IStorage::IsRangeValid(offset, size, this->size), fs::ResultOutOfRange());
+
+                /* Copy to memory. */
+                std::memcpy(this->buf + offset, buffer, size);
+                return ResultSuccess();
+            }
+
+            virtual Result Flush() override {
+                return ResultSuccess();
+            }
+
+            virtual Result GetSize(s64 *out) override {
+                *out = this->size;
+                return ResultSuccess();
+            }
+
+            virtual Result SetSize(s64 size) override {
+                return fs::ResultUnsupportedOperationInMemoryStorageA();
+            }
+
+            virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override {
+                switch (op_id) {
+                    case OperationId::InvalidateCache:
+                        return ResultSuccess();
+                    case OperationId::QueryRange:
+                        R_UNLESS(dst != nullptr,                     fs::ResultNullptrArgument());
+                        R_UNLESS(dst_size == sizeof(QueryRangeInfo), fs::ResultInvalidSize());
+                        reinterpret_cast<QueryRangeInfo *>(dst)->Clear();
+                        return ResultSuccess();
+                    default:
+                        return fs::ResultUnsupportedOperationInMemoryStorageB();
+                }
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_mount.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    constexpr inline size_t MountNameLengthMax = 15;
+
+    Result ConvertToFsCommonPath(char *dst, size_t dst_size, const char *src);
+
+    void Unmount(const char *mount_name);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_path_tool.hpp

@@ -26,16 +26,25 @@ namespace ams::fs {
         constexpr inline char Dot                = '.';
         constexpr inline char NullTerminator     = '\x00';
 
+        constexpr inline char AlternateDirectorySeparator = '\\';
     }
 
     class PathTool {
         public:
             static constexpr const char RootPath[] = "/";
         public:
+            static constexpr inline bool IsAlternateSeparator(char c) {
+                return c == StringTraits::AlternateDirectorySeparator;
+            }
+
             static constexpr inline bool IsSeparator(char c) {
                 return c == StringTraits::DirectorySeparator;
             }
 
+            static constexpr inline bool IsAnySeparator(char c) {
+                return IsSeparator(c) || IsAlternateSeparator(c);
+            }
+
             static constexpr inline bool IsNullTerminator(char c) {
                 return c == StringTraits::NullTerminator;
             }
@@ -56,6 +65,10 @@ namespace ams::fs {
                 return IsWindowsDriveCharacter(p[0]) && IsDriveSeparator(p[1]);
             }
 
+            static constexpr inline bool IsUnc(const char *p) {
+                return (IsSeparator(p[0]) && IsSeparator(p[1])) || (IsAlternateSeparator(p[0]) && IsAlternateSeparator(p[1]));
+            }
+
             static constexpr inline bool IsCurrentDirectory(const char *p) {
                 return IsDot(p[0]) && (IsSeparator(p[1]) || IsNullTerminator(p[1]));
             }

libraries/libstratosphere/include/stratosphere/fs/fs_query_range.hpp

@@ -15,6 +15,7 @@
  */
 #pragma once
 #include "fs_common.hpp"
+#include "fs_file.hpp"
 
 namespace ams::fs {
 
@@ -42,4 +43,6 @@ namespace ams::fs {
     using FileQueryRangeInfo    = QueryRangeInfo;
     using StorageQueryRangeInfo = QueryRangeInfo;
 
+    Result QueryRange(QueryRangeInfo *out, FileHandle handle, s64 offset, s64 size);
+
 }

libraries/libstratosphere/include/stratosphere/fs/fs_remote_filesystem.hpp

@@ -14,165 +14,217 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #pragma once
-#include "fs_common.hpp"
+#include <stratosphere/fs/fs_common.hpp>
-#include "fsa/fs_ifile.hpp"
+#include <stratosphere/fs/impl/fs_newable.hpp>
-#include "fsa/fs_idirectory.hpp"
+#include <stratosphere/fs/fsa/fs_ifile.hpp>
-#include "fsa/fs_ifilesystem.hpp"
+#include <stratosphere/fs/fsa/fs_idirectory.hpp>
+#include <stratosphere/fs/fsa/fs_ifilesystem.hpp>
+#include <stratosphere/fs/fs_query_range.hpp>
+#include <stratosphere/fs/fs_path_tool.hpp>
+#include <stratosphere/fs/fs_path_utils.hpp>
 
 namespace ams::fs {
 
-    class RemoteFile : public fsa::IFile {
+    class RemoteFile : public fsa::IFile, public impl::Newable {
         private:
-            std::unique_ptr<::FsFile> base_file;
+            ::FsFile base_file;
         public:
-            RemoteFile(::FsFile *f) : base_file(f) { /* ... */ }
+            RemoteFile(const ::FsFile &f) : base_file(f) { /* ... */ }
-            RemoteFile(std::unique_ptr<::FsFile> f) : base_file(std::move(f)) { /* ... */ }
-            RemoteFile(::FsFile f) {
-                this->base_file = std::make_unique<::FsFile>(f);
-            }
 
-            virtual ~RemoteFile() { fsFileClose(this->base_file.get()); }
+            virtual ~RemoteFile() { fsFileClose(std::addressof(this->base_file)); }
         public:
             virtual Result ReadImpl(size_t *out, s64 offset, void *buffer, size_t size, const fs::ReadOption &option) override final {
-                return fsFileRead(this->base_file.get(), offset, buffer, size, option.value, out);
+                return fsFileRead(std::addressof(this->base_file), offset, buffer, size, option.value, out);
             }
 
             virtual Result GetSizeImpl(s64 *out) override final {
-                return fsFileGetSize(this->base_file.get(), out);
+                return fsFileGetSize(std::addressof(this->base_file), out);
             }
 
             virtual Result FlushImpl() override final {
-                return fsFileFlush(this->base_file.get());
+                return fsFileFlush(std::addressof(this->base_file));
             }
 
             virtual Result WriteImpl(s64 offset, const void *buffer, size_t size, const fs::WriteOption &option) override final {
-                return fsFileWrite(this->base_file.get(), offset, buffer, size, option.value);
+                return fsFileWrite(std::addressof(this->base_file), offset, buffer, size, option.value);
             }
 
             virtual Result SetSizeImpl(s64 size) override final {
-                return fsFileSetSize(this->base_file.get(), size);
+                return fsFileSetSize(std::addressof(this->base_file), size);
             }
 
             virtual Result OperateRangeImpl(void *dst, size_t dst_size, fs::OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override final {
-                /* TODO: How should this be handled? */
+                R_UNLESS(op_id == OperationId::QueryRange,       fs::ResultUnsupportedOperationInFileServiceObjectAdapterA());
-                return fs::ResultNotImplemented();
+                R_UNLESS(dst_size == sizeof(FileQueryRangeInfo), fs::ResultInvalidSize());
+
+                return fsFileOperateRange(std::addressof(this->base_file), static_cast<::FsOperationId>(op_id), offset, size, reinterpret_cast<::FsRangeInfo *>(dst));
             }
         public:
             virtual sf::cmif::DomainObjectId GetDomainObjectId() const override {
-                return sf::cmif::DomainObjectId{serviceGetObjectId(&this->base_file->s)};
+                return sf::cmif::DomainObjectId{serviceGetObjectId(const_cast<::Service *>(std::addressof(this->base_file.s)))};
             }
     };
 
-    class RemoteDirectory : public fsa::IDirectory {
+    class RemoteDirectory : public fsa::IDirectory, public impl::Newable {
         private:
-            std::unique_ptr<::FsDir> base_dir;
+            ::FsDir base_dir;
         public:
-            RemoteDirectory(::FsDir *d) : base_dir(d) { /* ... */ }
+            RemoteDirectory(const ::FsDir &d) : base_dir(d) { /* ... */ }
-            RemoteDirectory(std::unique_ptr<::FsDir> d) : base_dir(std::move(d)) { /* ... */ }
-            RemoteDirectory(::FsDir d) {
-                this->base_dir = std::make_unique<::FsDir>(d);
-            }
 
-            virtual ~RemoteDirectory() { fsDirClose(this->base_dir.get()); }
+            virtual ~RemoteDirectory() { fsDirClose(std::addressof(this->base_dir)); }
         public:
             virtual Result ReadImpl(s64 *out_count, DirectoryEntry *out_entries, s64 max_entries) override final {
-                return fsDirRead(this->base_dir.get(), out_count, max_entries, out_entries);
+                return fsDirRead(std::addressof(this->base_dir), out_count, max_entries, out_entries);
             }
 
             virtual Result GetEntryCountImpl(s64 *out) override final {
-                return fsDirGetEntryCount(this->base_dir.get(), out);
+                return fsDirGetEntryCount(std::addressof(this->base_dir), out);
             }
         public:
             virtual sf::cmif::DomainObjectId GetDomainObjectId() const override {
-                return sf::cmif::DomainObjectId{serviceGetObjectId(&this->base_dir->s)};
+                return sf::cmif::DomainObjectId{serviceGetObjectId(const_cast<::Service *>(std::addressof(this->base_dir.s)))};
             }
     };
 
-    class RemoteFileSystem : public fsa::IFileSystem {
+    class RemoteFileSystem : public fsa::IFileSystem, public impl::Newable {
         private:
-            std::unique_ptr<::FsFileSystem> base_fs;
+            ::FsFileSystem base_fs;
         public:
-            RemoteFileSystem(::FsFileSystem *fs) : base_fs(fs) { /* ... */ }
+            RemoteFileSystem(const ::FsFileSystem &fs) : base_fs(fs) { /* ... */ }
-            RemoteFileSystem(std::unique_ptr<::FsFileSystem> fs) : base_fs(std::move(fs)) { /* ... */ }
-            RemoteFileSystem(::FsFileSystem fs) {
-                this->base_fs = std::make_unique<::FsFileSystem>(fs);
-            }
 
-            virtual ~RemoteFileSystem() { fsFsClose(this->base_fs.get()); }
+            virtual ~RemoteFileSystem() { fsFsClose(std::addressof(this->base_fs)); }
+        private:
+            Result GetPathForServiceObject(fssrv::sf::Path *out_path, const char *path) {
+                /* Copy and null terminate. */
+                std::strncpy(out_path->str, path, sizeof(out_path->str) - 1);
+                out_path->str[sizeof(out_path->str) - 1] = '\x00';
+
+                /* Replace directory separators. */
+                Replace(out_path->str, sizeof(out_path->str) - 1, StringTraits::AlternateDirectorySeparator, StringTraits::DirectorySeparator);
+
+                /* Get lengths. */
+                const auto mount_name_len = PathTool::IsWindowsAbsolutePath(path) ? 2 : 0;
+                const auto rel_path = out_path->str + mount_name_len;
+                const auto max_len  = fs::EntryNameLengthMax - mount_name_len;
+                return VerifyPath(rel_path, max_len, max_len);
+            }
         public:
             virtual Result CreateFileImpl(const char *path, s64 size, int flags) override final {
-                return fsFsCreateFile(this->base_fs.get(), path, size, flags);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsCreateFile(std::addressof(this->base_fs), sf_path.str, size, flags);
             }
 
             virtual Result DeleteFileImpl(const char *path) override final {
-                return fsFsDeleteFile(this->base_fs.get(), path);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsDeleteFile(std::addressof(this->base_fs), sf_path.str);
             }
 
             virtual Result CreateDirectoryImpl(const char *path) override final {
-                return fsFsCreateDirectory(this->base_fs.get(), path);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsCreateDirectory(std::addressof(this->base_fs), sf_path.str);
             }
 
             virtual Result DeleteDirectoryImpl(const char *path) override final {
-                return fsFsDeleteDirectory(this->base_fs.get(), path);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsDeleteDirectory(std::addressof(this->base_fs), sf_path.str);
             }
 
             virtual Result DeleteDirectoryRecursivelyImpl(const char *path) override final {
-                return fsFsDeleteDirectoryRecursively(this->base_fs.get(), path);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsDeleteDirectoryRecursively(std::addressof(this->base_fs), sf_path.str);
             }
 
             virtual Result RenameFileImpl(const char *old_path, const char *new_path) override final {
-                return fsFsRenameFile(this->base_fs.get(), old_path, new_path);
+                fssrv::sf::Path old_sf_path;
+                fssrv::sf::Path new_sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(old_sf_path), old_path));
+                R_TRY(GetPathForServiceObject(std::addressof(new_sf_path), new_path));
+                return fsFsRenameFile(std::addressof(this->base_fs), old_sf_path.str, new_sf_path.str);
             }
 
             virtual Result RenameDirectoryImpl(const char *old_path, const char *new_path) override final {
-                return fsFsRenameDirectory(this->base_fs.get(), old_path, new_path);
+                fssrv::sf::Path old_sf_path;
+                fssrv::sf::Path new_sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(old_sf_path), old_path));
+                R_TRY(GetPathForServiceObject(std::addressof(new_sf_path), new_path));
+                return fsFsRenameDirectory(std::addressof(this->base_fs), old_sf_path.str, new_sf_path.str);
             }
 
             virtual Result GetEntryTypeImpl(DirectoryEntryType *out, const char *path) override final {
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+
                 static_assert(sizeof(::FsDirEntryType) == sizeof(DirectoryEntryType));
-                return fsFsGetEntryType(this->base_fs.get(), path, reinterpret_cast<::FsDirEntryType *>(out));
+                return fsFsGetEntryType(std::addressof(this->base_fs), sf_path.str, reinterpret_cast<::FsDirEntryType *>(out));
             }
 
             virtual Result OpenFileImpl(std::unique_ptr<fsa::IFile> *out_file, const char *path, OpenMode mode) override final {
-                FsFile f;
+                fssrv::sf::Path sf_path;
-                R_TRY(fsFsOpenFile(this->base_fs.get(), path, mode, &f));
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
 
-                *out_file = std::make_unique<RemoteFile>(f);
+                FsFile f;
+                R_TRY(fsFsOpenFile(std::addressof(this->base_fs), sf_path.str, mode, &f));
+
+                auto file = std::make_unique<RemoteFile>(f);
+                R_UNLESS(file != nullptr, fs::ResultAllocationFailureInNew());
+
+                *out_file = std::move(file);
                 return ResultSuccess();
             }
 
             virtual Result OpenDirectoryImpl(std::unique_ptr<fsa::IDirectory> *out_dir, const char *path, OpenDirectoryMode mode) override final {
-                FsDir d;
+                fssrv::sf::Path sf_path;
-                R_TRY(fsFsOpenDirectory(this->base_fs.get(), path, mode, &d));
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
 
-                *out_dir = std::make_unique<RemoteDirectory>(d);
+                FsDir d;
+                R_TRY(fsFsOpenDirectory(std::addressof(this->base_fs), sf_path.str, mode, &d));
+
+                auto dir = std::make_unique<RemoteDirectory>(d);
+                R_UNLESS(dir != nullptr, fs::ResultAllocationFailureInNew());
+
+                *out_dir = std::move(dir);
                 return ResultSuccess();
             }
 
             virtual Result CommitImpl() override final {
-                return fsFsCommit(this->base_fs.get());
+                return fsFsCommit(std::addressof(this->base_fs));
             }
 
 
             virtual Result GetFreeSpaceSizeImpl(s64 *out, const char *path) {
-                return fsFsGetFreeSpace(this->base_fs.get(), path, out);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsGetFreeSpace(std::addressof(this->base_fs), sf_path.str, out);
             }
 
             virtual Result GetTotalSpaceSizeImpl(s64 *out, const char *path) {
-                return fsFsGetTotalSpace(this->base_fs.get(), path, out);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsGetTotalSpace(std::addressof(this->base_fs), sf_path.str, out);
             }
 
             virtual Result CleanDirectoryRecursivelyImpl(const char *path) {
-                return fsFsCleanDirectoryRecursively(this->base_fs.get(), path);
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsCleanDirectoryRecursively(std::addressof(this->base_fs), sf_path.str);
             }
 
             virtual Result GetFileTimeStampRawImpl(FileTimeStampRaw *out, const char *path) {
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
                 static_assert(sizeof(FileTimeStampRaw) == sizeof(::FsTimeStampRaw));
-                return fsFsGetFileTimeStampRaw(this->base_fs.get(), path, reinterpret_cast<::FsTimeStampRaw *>(out));
+                return fsFsGetFileTimeStampRaw(std::addressof(this->base_fs), sf_path.str, reinterpret_cast<::FsTimeStampRaw *>(out));
             }
 
             virtual Result QueryEntryImpl(char *dst, size_t dst_size, const char *src, size_t src_size, fsa::QueryId query, const char *path) {
-                return fsFsQueryEntry(this->base_fs.get(), dst, dst_size, src, src_size, path, static_cast<FsFileSystemQueryId>(query));
+                fssrv::sf::Path sf_path;
+                R_TRY(GetPathForServiceObject(std::addressof(sf_path), path));
+                return fsFsQueryEntry(std::addressof(this->base_fs), dst, dst_size, src, src_size, sf_path.str, static_cast<FsFileSystemQueryId>(query));
             }
     };
 

libraries/libstratosphere/include/stratosphere/fs/fs_remote_storage.hpp

@@ -16,17 +16,17 @@
 #pragma once
 #include "fs_common.hpp"
 #include "fs_istorage.hpp"
+#include "impl/fs_newable.hpp"
 
 namespace ams::fs {
 
-    class RemoteStorage : public IStorage {
+    class RemoteStorage : public IStorage, public impl::Newable {
         private:
-            std::unique_ptr<::FsStorage> base_storage;
+            std::unique_ptr<::FsStorage, impl::Deleter> base_storage;
         public:
-            RemoteStorage(::FsStorage *s) : base_storage(s) { /* ... */ }
+            RemoteStorage(::FsStorage &s) {
-            RemoteStorage(std::unique_ptr<::FsStorage> s) : base_storage(std::move(s)) { /* ... */ }
+                this->base_storage = impl::MakeUnique<::FsStorage>();
-            RemoteStorage(::FsStorage s) {
+                *this->base_storage = s;
-                this->base_storage = std::make_unique<::FsStorage>(s);
             }
 
             virtual ~RemoteStorage() { fsStorageClose(this->base_storage.get()); }

libraries/libstratosphere/include/stratosphere/fs/fs_rights_id.hpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::fs {
+
+    union RightsId {
+      u8 data[0x10];
+      u64 data64[2];
+    };
+    static_assert(sizeof(RightsId) == 0x10);
+    static_assert(std::is_pod<RightsId>::value);
+
+    /* Rights ID API */
+    Result GetRightsId(RightsId *out, const char *path);
+    Result GetRightsId(RightsId *out, u8 *out_key_generation, const char *path);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_romfs_filesystem.hpp

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+#include "impl/fs_newable.hpp"
+#include "fsa/fs_ifile.hpp"
+#include "fsa/fs_idirectory.hpp"
+#include "fsa/fs_ifilesystem.hpp"
+#include "fs_dbm_hierarchical_rom_file_table.hpp"
+
+namespace ams::fs {
+
+    class RomFsFileSystem : public fsa::IFileSystem, public impl::Newable {
+        NON_COPYABLE(RomFsFileSystem);
+        public:
+            using RomFileTable = HierarchicalRomFileTable;
+        private:
+            RomFileTable rom_file_table;
+            IStorage *base_storage;
+            std::unique_ptr<IStorage> unique_storage;
+            std::unique_ptr<IStorage> dir_bucket_storage;
+            std::unique_ptr<IStorage> dir_entry_storage;
+            std::unique_ptr<IStorage> file_bucket_storage;
+            std::unique_ptr<IStorage> file_entry_storage;
+            s64 entry_size;
+        private:
+            Result GetFileInfo(RomFileTable::FileInfo *out, const char *path);
+        public:
+            static Result GetRequiredWorkingMemorySize(size_t *out, IStorage *storage);
+        public:
+            RomFsFileSystem();
+            virtual ~RomFsFileSystem() override;
+
+            Result Initialize(IStorage *base, void *work, size_t work_size, bool use_cache);
+            Result Initialize(std::unique_ptr<IStorage>&& base, void *work, size_t work_size, bool use_cache);
+
+            IStorage *GetBaseStorage();
+            RomFileTable *GetRomFileTable();
+            Result GetFileBaseOffset(s64 *out, const char *path);
+        public:
+            virtual Result CreateFileImpl(const char *path, s64 size, int flags) override;
+            virtual Result DeleteFileImpl(const char *path) override;
+            virtual Result CreateDirectoryImpl(const char *path) override;
+            virtual Result DeleteDirectoryImpl(const char *path) override;
+            virtual Result DeleteDirectoryRecursivelyImpl(const char *path) override;
+            virtual Result RenameFileImpl(const char *old_path, const char *new_path) override;
+            virtual Result RenameDirectoryImpl(const char *old_path, const char *new_path) override;
+            virtual Result GetEntryTypeImpl(fs::DirectoryEntryType *out, const char *path) override;
+            virtual Result OpenFileImpl(std::unique_ptr<fs::fsa::IFile> *out_file, const char *path, fs::OpenMode mode) override;
+            virtual Result OpenDirectoryImpl(std::unique_ptr<fs::fsa::IDirectory> *out_dir, const char *path, fs::OpenDirectoryMode mode) override;
+            virtual Result CommitImpl() override;
+            virtual Result GetFreeSpaceSizeImpl(s64 *out, const char *path) override;
+            virtual Result GetTotalSpaceSizeImpl(s64 *out, const char *path) override;
+            virtual Result CleanDirectoryRecursivelyImpl(const char *path) override;
+
+            /* These aren't accessible as commands. */
+            virtual Result CommitProvisionallyImpl(s64 counter) override;
+            virtual Result RollbackImpl() override;
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_save_data_management.hpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+#include "fs_save_data_types.hpp"
+
+namespace ams::fs {
+
+    Result DeleteSaveData(SaveDataId id);
+    Result DeleteSaveData(SaveDataSpaceId space_id, SaveDataId id);
+
+    Result GetSaveDataFlags(u32 *out, SaveDataId id);
+    Result GetSaveDataFlags(u32 *out, SaveDataSpaceId space_id, SaveDataId id);
+    Result SetSaveDataFlags(SaveDataId id, SaveDataSpaceId space_id, u32 flags);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_save_data_transaction.hpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+#include "fs_save_data_types.hpp"
+
+namespace ams::fs {
+
+    Result CommitSaveData(const char *path);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_save_data_types.hpp

@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    using SaveDataId           = u64;
+    using SystemSaveDataId     = u64;
+    using SystemBcatSaveDataId = SystemSaveDataId;
+
+    enum class SaveDataSpaceId : u8 {
+        System       = 0,
+        User         = 1,
+        SdSystem     = 2,
+        Temporary    = 3,
+        SdUser       = 4,
+
+        ProperSystem = 100,
+        SafeMode     = 101,
+    };
+
+    enum class SaveDataType : u8 {
+        System     = 0,
+        Account    = 1,
+        Bcat       = 2,
+        Device     = 3,
+        Temporary  = 4,
+        Cache      = 5,
+        SystemBcat = 6,
+    };
+
+    enum class SaveDataRank : u8 {
+        Primary   = 0,
+        Secondary = 1,
+    };
+
+    struct UserId {
+        u64 data[2];
+    };
+    static_assert(std::is_pod<UserId>::value);
+
+    constexpr inline bool operator<(const UserId &lhs, const UserId &rhs) {
+        if (lhs.data[0] < rhs.data[0]) {
+            return true;
+        } else if (lhs.data[0] == rhs.data[0] && lhs.data[1] < rhs.data[1]) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    constexpr inline bool operator==(const UserId &lhs, const UserId &rhs) {
+        return lhs.data[0] == rhs.data[0] && lhs.data[1] == rhs.data[1];
+    }
+
+    constexpr inline bool operator!=(const UserId &lhs, const UserId &rhs) {
+        return !(lhs == rhs);
+    }
+
+    constexpr inline SystemSaveDataId InvalidSystemSaveDataId = 0;
+    constexpr inline UserId InvalidUserId = {};
+
+    enum SaveDataFlags : u32 {
+        SaveDataFlags_None                                                = (0 << 0),
+        SaveDataFlags_KeepAfterResettingSystemSaveData                    = (1 << 0),
+        SaveDataFlags_KeepAfterRefurbishment                              = (1 << 1),
+        SaveDataFlags_KeepAfterResettingSystemSaveDataWithoutUserSaveData = (1 << 2),
+        SaveDataFlags_NeedsSecureDelete                                   = (1 << 3),
+    };
+
+    struct SaveDataCreationInfo {
+        s64 size;
+        s64 journal_size;
+        s64 block_size;
+        u64 owner_id;
+        u32 flags;
+        SaveDataSpaceId space_id;
+        bool pseudo;
+        u8 reserved[0x1A];
+    };
+    static_assert(std::is_pod<SaveDataCreationInfo>::value);
+    static_assert(sizeof(SaveDataCreationInfo) == 0x40);
+
+    struct SaveDataAttribute {
+        ncm::ProgramId program_id;
+        UserId user_id;
+        SystemSaveDataId system_save_data_id;
+        SaveDataType type;
+        SaveDataRank rank;
+        u16 index;
+        u8 reserved[0x1C];
+
+        static constexpr SaveDataAttribute Make(ncm::ProgramId program_id, SaveDataType type, UserId user_id, SystemSaveDataId system_save_data_id, u16 index, SaveDataRank rank) {
+            return {
+                .program_id          = program_id,
+                .user_id             = user_id,
+                .system_save_data_id = system_save_data_id,
+                .type                = type,
+                .rank                = rank,
+                .index               = index,
+            };
+        }
+
+        static constexpr SaveDataAttribute Make(ncm::ProgramId program_id, SaveDataType type, UserId user_id, SystemSaveDataId system_save_data_id, u16 index) {
+            return Make(program_id, type, user_id, system_save_data_id, index, SaveDataRank::Primary);
+        }
+
+        static constexpr SaveDataAttribute Make(ncm::ProgramId program_id, SaveDataType type, UserId user_id, SystemSaveDataId system_save_data_id) {
+            return Make(program_id, type, user_id, system_save_data_id, 0, SaveDataRank::Primary);
+        }
+    };
+    static_assert(sizeof(SaveDataAttribute) == 0x40);
+    static_assert(std::is_trivially_destructible<SaveDataAttribute>::value);
+
+    constexpr inline bool operator<(const SaveDataAttribute &lhs, const SaveDataAttribute &rhs) {
+        return std::tie(lhs.program_id, lhs.user_id, lhs.system_save_data_id, lhs.index, lhs.rank) <
+               std::tie(rhs.program_id, rhs.user_id, rhs.system_save_data_id, rhs.index, rhs.rank);
+    }
+
+    constexpr inline bool operator==(const SaveDataAttribute &lhs, const SaveDataAttribute &rhs) {
+        return std::tie(lhs.program_id, lhs.user_id, lhs.system_save_data_id, lhs.type, lhs.rank, lhs.index) ==
+               std::tie(rhs.program_id, rhs.user_id, rhs.system_save_data_id, rhs.type, rhs.rank, rhs.index);
+    }
+
+    constexpr inline bool operator!=(const SaveDataAttribute &lhs, const SaveDataAttribute &rhs) {
+        return !(lhs == rhs);
+    }
+
+    constexpr inline size_t DefaultSaveDataBlockSize = 16_KB;
+
+    struct SaveDataExtraData {
+        SaveDataAttribute attr;
+        u64 owner_id;
+        s64 timestamp;
+        u32 flags;
+        u8 pad[4];
+        s64 available_size;
+        s64 journal_size;
+        s64 commit_id;
+        u8 unused[0x190];
+    };
+    static_assert(sizeof(SaveDataExtraData) == 0x200);
+    static_assert(std::is_pod<SaveDataExtraData>::value);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_sd_card.hpp

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    Result MountSdCard(const char *name);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_signed_system_partition.hpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    bool IsSignedSystemPartitionOnSdCardValid(const char *system_root_path);
+    bool IsSignedSystemPartitionOnSdCardValidDeprecated();
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_substorage.hpp

@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "impl/fs_newable.hpp"
+#include "fs_istorage.hpp"
+
+namespace ams::fs {
+
+    class SubStorage : public ::ams::fs::IStorage, public ::ams::fs::impl::Newable {
+        private:
+            std::shared_ptr<IStorage> shared_base_storage;
+            fs::IStorage *base_storage;
+            s64 offset;
+            s64 size;
+            bool resizable;
+        private:
+            constexpr bool IsValid() const {
+                return this->base_storage != nullptr;
+            }
+        public:
+            SubStorage() : shared_base_storage(), base_storage(nullptr), offset(0), size(0), resizable(false) { /* ... */ }
+
+            SubStorage(const SubStorage &rhs) : shared_base_storage(), base_storage(rhs.base_storage), offset(rhs.offset), size(rhs.size),  resizable(rhs.resizable) { /* ... */}
+            SubStorage &operator=(const SubStorage &rhs) {
+                if (this != std::addressof(rhs)) {
+                    this->base_storage        = rhs.base_storage;
+                    this->offset              = rhs.offset;
+                    this->size                = rhs.size;
+                    this->resizable           = rhs.resizable;
+                }
+                return *this;
+            }
+
+            SubStorage(IStorage *storage, s64 o, s64 sz) : shared_base_storage(), base_storage(storage), offset(o), size(sz) {
+                AMS_ABORT_UNLESS(this->IsValid());
+                AMS_ABORT_UNLESS(this->offset  >= 0);
+                AMS_ABORT_UNLESS(this->size    >= 0);
+            }
+
+            SubStorage(std::shared_ptr<IStorage> storage, s64 o, s64 sz) : shared_base_storage(storage), base_storage(storage.get()), offset(o), size(sz) {
+                AMS_ABORT_UNLESS(this->IsValid());
+                AMS_ABORT_UNLESS(this->offset  >= 0);
+                AMS_ABORT_UNLESS(this->size    >= 0);
+            }
+
+            SubStorage(SubStorage *sub, s64 o, s64 sz) : shared_base_storage(), base_storage(sub->base_storage), offset(o + sub->offset), size(sz) {
+                AMS_ABORT_UNLESS(this->IsValid());
+                AMS_ABORT_UNLESS(this->offset  >= 0);
+                AMS_ABORT_UNLESS(this->size    >= 0);
+                AMS_ABORT_UNLESS(sub->size     >= o + sz);
+            }
+
+        public:
+            void SetResizable(bool rsz) {
+                this->resizable = rsz;
+            }
+        public:
+            virtual Result Read(s64 offset, void *buffer, size_t size) override {
+                /* Ensure we're initialized. */
+                R_UNLESS(this->IsValid(),                                  fs::ResultNotInitialized());
+
+                /* Succeed immediately on zero-sized operation. */
+                R_SUCCEED_IF(size == 0);
+
+
+                /* Validate arguments and read. */
+                R_UNLESS(buffer != nullptr,                                fs::ResultNullptrArgument());
+                R_UNLESS(IStorage::IsRangeValid(offset, size, this->size), fs::ResultOutOfRange());
+                return this->base_storage->Read(this->offset + offset, buffer, size);
+            }
+
+            virtual Result Write(s64 offset, const void *buffer, size_t size) override{
+                /* Ensure we're initialized. */
+                R_UNLESS(this->IsValid(),                                  fs::ResultNotInitialized());
+
+                /* Succeed immediately on zero-sized operation. */
+                R_SUCCEED_IF(size == 0);
+
+                /* Validate arguments and write. */
+                R_UNLESS(buffer != nullptr,                                fs::ResultNullptrArgument());
+                R_UNLESS(IStorage::IsRangeValid(offset, size, this->size), fs::ResultOutOfRange());
+                return this->base_storage->Write(this->offset + offset, buffer, size);
+            }
+
+            virtual Result Flush() override {
+                R_UNLESS(this->IsValid(), fs::ResultNotInitialized());
+                return this->base_storage->Flush();
+            }
+
+            virtual Result SetSize(s64 size) override {
+                /* Ensure we're initialized and validate arguments. */
+                R_UNLESS(this->IsValid(),                                    fs::ResultNotInitialized());
+                R_UNLESS(this->resizable,                                    fs::ResultUnsupportedOperationInSubStorageA());
+                R_UNLESS(IStorage::IsOffsetAndSizeValid(this->offset, size), fs::ResultInvalidSize());
+
+                /* Ensure that we're allowed to set size. */
+                s64 cur_size;
+                R_TRY(this->base_storage->GetSize(std::addressof(cur_size)));
+                R_UNLESS(cur_size == this->offset + this->size, fs::ResultUnsupportedOperationInSubStorageB());
+
+                /* Set the size. */
+                R_TRY(this->base_storage->SetSize(this->offset + size));
+
+                this->size = size;
+                return ResultSuccess();
+            }
+
+            virtual Result GetSize(s64 *out) override {
+                /* Ensure we're initialized. */
+                R_UNLESS(this->IsValid(), fs::ResultNotInitialized());
+
+                *out = this->size;
+                return ResultSuccess();
+            }
+
+            virtual Result OperateRange(void *dst, size_t dst_size, OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override {
+                /* Ensure we're initialized. */
+                R_UNLESS(this->IsValid(),                              fs::ResultNotInitialized());
+
+                /* Succeed immediately on zero-sized operation. */
+                R_SUCCEED_IF(size == 0);
+
+                /* Validate arguments and operate. */
+                R_UNLESS(IStorage::IsOffsetAndSizeValid(offset, size), fs::ResultOutOfRange());
+                return this->base_storage->OperateRange(dst, dst_size, op_id, this->offset + offset, size, src, src_size);
+            }
+
+            using IStorage::OperateRange;
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_system_data.hpp

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+
+namespace ams::fs {
+
+    Result QueryMountSystemDataCacheSize(size_t *out, ncm::SystemDataId data_id);
+
+    Result MountSystemData(const char *name, ncm::SystemDataId data_id);
+    Result MountSystemData(const char *name, ncm::SystemDataId data_id, void *cache_buffer, size_t cache_size);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fs_system_save_data.hpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include "fs_common.hpp"
+#include "fs_save_data_types.hpp"
+
+namespace ams::fs {
+
+    void DisableAutoSaveDataCreation();
+
+    Result CreateSystemSaveData(SystemSaveDataId save_id, s64 size, s64 journal_size, u32 flags);
+    Result CreateSystemSaveData(SystemSaveDataId save_id, u64 owner_id, s64 size, s64 journal_size, u32 flags);
+    Result CreateSystemSaveData(SaveDataSpaceId space_id, SystemSaveDataId save_id, u64 owner_id, s64 size, s64 journal_size, u32 flags);
+
+    Result CreateSystemSaveData(SystemSaveDataId save_id, UserId user_id, s64 size, s64 journal_size, u32 flags);
+    Result CreateSystemSaveData(SystemSaveDataId save_id, UserId user_id, u64 owner_id, s64 size, s64 journal_size, u32 flags);
+    Result CreateSystemSaveData(SaveDataSpaceId space_id, SystemSaveDataId save_id, UserId user_id, u64 owner_id, s64 size, s64 journal_size, u32 flags);
+
+    Result MountSystemSaveData(const char *name, SystemSaveDataId id);
+    Result MountSystemSaveData(const char *name, SaveDataSpaceId space_id, SystemSaveDataId id);
+
+    Result MountSystemSaveData(const char *name, SystemSaveDataId id, UserId user_id);
+    Result MountSystemSaveData(const char *name, SaveDataSpaceId space_id, SystemSaveDataId id, UserId user_id);
+
+    Result DeleteSystemSaveData(SaveDataSpaceId space_id, SystemSaveDataId id, UserId user_id);
+
+}

libraries/libstratosphere/include/stratosphere/fs/fsa/fs_ifile.hpp

@@ -96,10 +96,12 @@ namespace ams::fs::fsa {
                 return ResultSuccess();
             }
 
-            Result DrySetSize(s64 size, OpenMode open_mode) {
+            Result DrySetSize(s64 size, fs::OpenMode open_mode) {
                 /* Check that we can write. */
                 R_UNLESS((open_mode & OpenMode_Write) != 0, fs::ResultInvalidOperationForOpenMode());
 
+                AMS_ASSERT(size >= 0);
+
                 return ResultSuccess();
             }
         private:

libraries/libstratosphere/include/stratosphere/fs/fsa/fs_ifilesystem.hpp

@@ -24,7 +24,8 @@ namespace ams::fs::fsa {
     class IDirectory;
 
     enum class QueryId {
-        SetConcatenationFileAttribute = FsFileSystemQueryId_SetConcatenationFileAttribute
+        SetConcatenationFileAttribute        = 0,
+        IsSignedSystemPartitionOnSdCardValid = 2,
     };
 
     class IFileSystem {
@@ -88,10 +89,10 @@ namespace ams::fs::fsa {
             }
 
             Result OpenDirectory(std::unique_ptr<IDirectory> *out_dir, const char *path, OpenDirectoryMode mode) {
-                R_UNLESS(path != nullptr,                      fs::ResultInvalidPath());
+                R_UNLESS(path != nullptr,                                                               fs::ResultInvalidPath());
-                R_UNLESS(out_dir != nullptr,                   fs::ResultNullptrArgument());
+                R_UNLESS(out_dir != nullptr,                                                            fs::ResultNullptrArgument());
-                R_UNLESS((mode &  OpenDirectoryMode_All) != 0, fs::ResultInvalidArgument());
+                R_UNLESS((mode &  OpenDirectoryMode_All) != 0,                                          fs::ResultInvalidArgument());
-                R_UNLESS((mode & ~OpenDirectoryMode_All) == 0, fs::ResultInvalidArgument());
+                R_UNLESS((mode & ~(OpenDirectoryMode_All | OpenDirectoryMode_NotRequireFileSize)) == 0, fs::ResultInvalidArgument());
                 return this->OpenDirectoryImpl(out_dir, path, mode);
             }
 

libraries/libstratosphere/include/stratosphere/fs/fsa/fs_registrar.hpp

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include "../fs_common.hpp"
+
+namespace ams::fs::fsa {
+
+    class ICommonMountNameGenerator {
+        public:
+            virtual ~ICommonMountNameGenerator() { /* ... */ }
+            virtual Result GenerateCommonMountName(char *name, size_t name_size) = 0;
+    };
+
+    class IFileSystem;
+
+    Result Register(const char *name, std::unique_ptr<IFileSystem> &&fs);
+    Result Register(const char *name, std::unique_ptr<IFileSystem> &&fs, std::unique_ptr<ICommonMountNameGenerator> &&generator);
+    Result Register(const char *name, std::unique_ptr<IFileSystem> &&fs, std::unique_ptr<ICommonMountNameGenerator> &&generator, bool use_data_cache, bool use_path_cache, bool multi_commit_supported);
+
+    void Unregister(const char *name);
+}

libraries/libstratosphere/include/stratosphere/fs/impl/fs_common_mount_name.hpp

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+namespace ams::fs::impl {
+
+    /* Delimiting of mount names. */
+    constexpr inline const char ReservedMountNamePrefixCharacter                = '@';
+    constexpr inline const char * const MountNameDelimiter                      = ":/";
+
+    /* Filesystem names. */
+    constexpr inline const char * const HostRootFileSystemMountName             = "@Host";
+    constexpr inline const char * const SdCardFileSystemMountName               = "@Sdcard";
+    constexpr inline const char * const GameCardFileSystemMountName             = "@Gc";
+
+    constexpr inline size_t GameCardFileSystemMountNameSuffixLength             = 1;
+
+    constexpr inline const char * const GameCardFileSystemMountNameUpdateSuffix = "U";
+    constexpr inline const char * const GameCardFileSystemMountNameNormalSuffix = "N";
+    constexpr inline const char * const GameCardFileSystemMountNameSecureSuffix = "S";
+
+    /* Built-in storage names. */
+    constexpr inline const char * const BisCalibrationFilePartitionMountName    = "@CalibFile";
+    constexpr inline const char * const BisSafeModePartitionMountName           = "@Safe";
+    constexpr inline const char * const BisUserPartitionMountName               = "@User";
+    constexpr inline const char * const BisSystemPartitionMountName             = "@System";
+
+    /* Content storage names. */
+    constexpr inline const char * const ContentStorageSystemMountName           = "@SystemContent";
+    constexpr inline const char * const ContentStorageUserMountName             = "@UserContent";
+    constexpr inline const char * const ContentStorageSdCardMountName           = "@SdCardContent";
+
+
+    /* Registered update partition. */
+    constexpr inline const char * const RegisteredUpdatePartitionMountName      = "@RegUpdate";
+
+}

libraries/libstratosphere/include/stratosphere/fs/impl/fs_data.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/fs/fs_common.hpp>
+
+namespace ams::fs::impl {
+
+    Result QueryMountDataCacheSize(size_t *out, ncm::DataId data_id, ncm::StorageId storage_id);
+
+    Result MountData(const char *name, ncm::DataId data_id, ncm::StorageId storage_id);
+    Result MountData(const char *name, ncm::DataId data_id, ncm::StorageId storage_id, void *cache_buffer, size_t cache_size);
+    Result MountData(const char *name, ncm::DataId data_id, ncm::StorageId storage_id, void *cache_buffer, size_t cache_size, bool use_data_cache, bool use_path_cache);
+
+}

libraries/libstratosphere/include/stratosphere/fs/impl/fs_filesystem_proxy_type.hpp

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::fs::impl {
+
+    enum FileSystemProxyType {
+        FileSystemProxyType_Code            = 0,
+        FileSystemProxyType_Rom             = 1,
+        FileSystemProxyType_Logo            = 2,
+        FileSystemProxyType_Control         = 3,
+        FileSystemProxyType_Manual          = 4,
+        FileSystemProxyType_Meta            = 5,
+        FileSystemProxyType_Data            = 6,
+        FileSystemProxyType_Package         = 7,
+        FileSystemProxyType_UpdatePartition = 8,
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fs/impl/fs_newable.hpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/fs/fs_memory_management.hpp>
+
+namespace ams::fs::impl {
+
+    class Newable {
+        public:
+            static void *operator new(size_t size) {
+                return ::ams::fs::impl::Allocate(size);
+            }
+
+            static void *operator new[](size_t size) {
+                return ::ams::fs::impl::Allocate(size);
+            }
+
+            static void operator delete(void *ptr, size_t size) {
+                return ::ams::fs::impl::Deallocate(ptr, size);
+            }
+
+            static void operator delete[](void *ptr, size_t size) {
+                return ::ams::fs::impl::Deallocate(ptr, size);
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/fssrv/fssrv_sf_path.hpp

@@ -14,9 +14,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #pragma once
-#include "../fs/fs_common.hpp"
+#include <stratosphere/fs/fs_common.hpp>
-#include "../fs/fs_directory.hpp"
+#include <stratosphere/fs/fs_directory.hpp>
-#include "../sf/sf_buffer_tags.hpp"
+#include <stratosphere/sf/sf_buffer_tags.hpp>
 
 namespace ams::fssrv::sf {
 

libraries/libstratosphere/include/stratosphere/kvdb/kvdb_archive.hpp

@@ -13,9 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
 #pragma once
-#include "kvdb_auto_buffer.hpp"
+#include <stratosphere/kvdb/kvdb_auto_buffer.hpp>
 
 namespace ams::kvdb {
 

libraries/libstratosphere/include/stratosphere/kvdb/kvdb_auto_buffer.hpp

@@ -13,7 +13,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
 #pragma once
 #include <vapours.hpp>
 
@@ -39,7 +38,7 @@ namespace ams::kvdb {
             }
 
             AutoBuffer& operator=(AutoBuffer &&rhs) {
-                rhs.Swap(*this);
+                AutoBuffer(std::move(rhs)).Swap(*this);
                 return *this;
             }
 
@@ -70,9 +69,8 @@ namespace ams::kvdb {
 
                 /* Allocate a buffer. */
                 this->buffer = static_cast<u8 *>(std::malloc(size));
-                if (this->buffer == nullptr) {
+                R_UNLESS(this->buffer != nullptr, ResultAllocationFailed());
-                    return ResultAllocationFailed();
+
-                }
                 this->size = size;
                 return ResultSuccess();
             }

libraries/libstratosphere/include/stratosphere/kvdb/kvdb_bounded_string.hpp

@@ -13,7 +13,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
 #pragma once
 #include <vapours.hpp>
 
@@ -51,6 +50,7 @@ namespace ams::kvdb {
                 std::va_list args;
                 va_start(args, format);
                 CheckLength(std::vsnprintf(string.buffer, N, format, args));
+                string.buffer[N - 1] = 0;
                 va_end(args);
 
                 return string;
@@ -74,6 +74,7 @@ namespace ams::kvdb {
                 /* Ensure string can fit in our buffer. */
                 CheckLength(strnlen(s, N));
                 std::strncpy(this->buffer, s, N);
+                this->buffer[N - 1] = 0;
             }
 
             void SetFormat(const char *format, ...) __attribute__((format (printf, 2, 3))) {

libraries/libstratosphere/include/stratosphere/kvdb/kvdb_file_key_value_cache.hpp

@@ -13,9 +13,10 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#include <sys/stat.h>
+#include <stratosphere/fs/fs_filesystem.hpp>
-#include "kvdb_bounded_string.hpp"
+#include <stratosphere/fs/fs_file.hpp>
-#include "kvdb_file_key_value_store.hpp"
+#include <stratosphere/kvdb/kvdb_bounded_string.hpp>
+#include <stratosphere/kvdb/kvdb_file_key_value_store.hpp>
 
 namespace ams::kvdb {
 
@@ -39,16 +40,16 @@ namespace ams::kvdb {
             public:
                 static Result CreateNewList(const char *path) {
                     /* Create new lru_list.dat. */
-                    R_TRY(fsdevCreateFile(path, FileSize, 0));
+                    R_TRY(fs::CreateFile(path, FileSize));
 
                     /* Open the file. */
-                    FILE *fp = fopen(path, "r+b");
+                    fs::FileHandle file;
-                    R_UNLESS(fp != nullptr, fsdevGetLastResult());
+                    R_TRY(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Write));
-                    ON_SCOPE_EXIT { fclose(fp); };
+                    ON_SCOPE_EXIT { fs::CloseFile(file); };
 
                     /* Write new header with zero entries to the file. */
                     LruHeader new_header = { .entry_count = 0, };
-                    R_UNLESS(fwrite(&new_header, sizeof(new_header), 1, fp) == 1, fsdevGetLastResult());
+                    R_TRY(fs::WriteFile(file, 0, std::addressof(new_header), sizeof(new_header), fs::WriteOption::Flush));
 
                     return ResultSuccess();
                 }
@@ -80,36 +81,33 @@ namespace ams::kvdb {
                     std::memset(this->keys, 0, BufferSize);
 
                     /* Open file. */
-                    FILE *fp = fopen(this->file_path, "rb");
+                    fs::FileHandle file;
-                    R_UNLESS(fp != nullptr, fsdevGetLastResult());
+                    R_TRY(fs::OpenFile(std::addressof(file), this->file_path, fs::OpenMode_Read));
-                    ON_SCOPE_EXIT { fclose(fp); };
+                    ON_SCOPE_EXIT { fs::CloseFile(file); };
 
                     /* Read header. */
-                    R_UNLESS(fread(&this->header, sizeof(this->header), 1, fp) == 1, fsdevGetLastResult());
+                    R_TRY(fs::ReadFile(file, 0, std::addressof(this->header), sizeof(this->header)));
 
                     /* Read entries. */
-                    const size_t count = this->GetCount();
+                    R_TRY(fs::ReadFile(file, sizeof(this->header), this->keys, BufferSize));
-                    if (count > 0) {
-                        R_UNLESS(fread(this->keys, std::min(BufferSize, sizeof(Key) * count), 1, fp) == 1, fsdevGetLastResult());
-                    }
 
                     return ResultSuccess();
                 }
 
                 Result Save() {
                     /* Open file. */
-                    FILE *fp = fopen(this->file_path, "r+b");
+                    fs::FileHandle file;
-                    R_UNLESS(fp != nullptr, fsdevGetLastResult());
+                    R_TRY(fs::OpenFile(std::addressof(file), this->file_path, fs::OpenMode_Read));
-                    ON_SCOPE_EXIT { fclose(fp); };
+                    ON_SCOPE_EXIT { fs::CloseFile(file); };
 
                     /* Write header. */
-                    R_UNLESS(fwrite(&this->header, sizeof(this->header), 1, fp) == 1, fsdevGetLastResult());
+                    R_TRY(fs::WriteFile(file, 0, std::addressof(this->header), sizeof(this->header), fs::WriteOption::None));
 
                     /* Write entries. */
-                    R_UNLESS(fwrite(this->keys, BufferSize, 1, fp) == 1, fsdevGetLastResult());
+                    R_TRY(fs::WriteFile(file, sizeof(this->header), this->keys, BufferSize, fs::WriteOption::None));
 
                     /* Flush. */
-                    fflush(fp);
+                    R_TRY(fs::FlushFile(file));
 
                     return ResultSuccess();
                 }
@@ -209,44 +207,37 @@ namespace ams::kvdb {
                 return Path::MakeFormat("%s/%s", dir, "kvs");
             }
 
-            static Result Exists(bool *out, const char *path, bool is_dir) {
+            static Result Exists(bool *out, const char *path, fs::DirectoryEntryType type) {
                 /* Set out to false initially. */
                 *out = false;
 
-                /* Check that the path exists, and that our entry type is correct. */
+                /* Try to get the entry type. */
-                {
+                fs::DirectoryEntryType entry_type;
-                    struct stat st;
+                R_TRY_CATCH(fs::GetEntryType(std::addressof(entry_type), path)) {
+                    /* If the path doesn't exist, nothing has gone wrong. */
+                    R_CONVERT(fs::ResultPathNotFound, ResultSuccess());
+                } R_END_TRY_CATCH;
 
-                    if (stat(path, &st) != 0) {
+                /* Check that the entry type is correct. */
-                        R_TRY_CATCH(fsdevGetLastResult()) {
+                R_UNLESS(entry_type == type, ResultInvalidFilesystemState());
-                            /* If the path doesn't exist, nothing has gone wrong. */
-                            R_CONVERT(fs::ResultPathNotFound, ResultSuccess());
-                        } R_END_TRY_CATCH;
-                    }
-
-                    if (is_dir) {
-                        R_UNLESS((S_ISDIR(st.st_mode)), ResultInvalidFilesystemState());
-                    } else {
-                        R_UNLESS((S_ISREG(st.st_mode)), ResultInvalidFilesystemState());
-                    }
-                }
 
+                /* The entry exists and is the correct type. */
                 *out = true;
                 return ResultSuccess();
             }
 
             static Result DirectoryExists(bool *out, const char *path) {
-                return Exists(out, path, true);
+                return Exists(out, path, fs::DirectoryEntryType_Directory);
             }
 
             static Result FileExists(bool *out, const char *path) {
-                return Exists(out, path, false);
+                return Exists(out, path, fs::DirectoryEntryType_File);
             }
         public:
             static Result CreateNewCache(const char *dir) {
                 /* Make a new key value store filesystem, and a new lru_list.dat. */
                 R_TRY(LeastRecentlyUsedList::CreateNewList(GetLeastRecentlyUsedListPath(dir)));
-                R_UNLESS(mkdir(GetFileKeyValueStorePath(dir), 0) == 0, fsdevGetLastResult());
+                R_TRY(fs::CreateDirectory(dir));
 
                 return ResultSuccess();
             }

libraries/libstratosphere/include/stratosphere/kvdb/kvdb_file_key_value_store.hpp

@@ -14,8 +14,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #pragma once
-#include "../os.hpp"
+#include <stratosphere/os.hpp>
-#include "kvdb_bounded_string.hpp"
+#include <stratosphere/kvdb/kvdb_bounded_string.hpp>
 
 namespace ams::kvdb {
 

libraries/libstratosphere/include/stratosphere/kvdb/kvdb_memory_key_value_store.hpp

@@ -15,10 +15,11 @@
  */
 
 #pragma once
-#include <sys/stat.h>
+#include <stratosphere/fs/fs_filesystem.hpp>
-#include "kvdb_auto_buffer.hpp"
+#include <stratosphere/fs/fs_file.hpp>
-#include "kvdb_archive.hpp"
+#include <stratosphere/kvdb/kvdb_auto_buffer.hpp>
-#include "kvdb_bounded_string.hpp"
+#include <stratosphere/kvdb/kvdb_archive.hpp>
+#include <stratosphere/kvdb/kvdb_bounded_string.hpp>
 
 namespace ams::kvdb {
 
@@ -262,11 +263,9 @@ namespace ams::kvdb {
 
             Result Initialize(const char *dir, size_t capacity) {
                 /* Ensure that the passed path is a directory. */
-                {
+                fs::DirectoryEntryType entry_type;
-                    struct stat st;
+                R_TRY(fs::GetEntryType(std::addressof(entry_type), dir));
-                    R_UNLESS(stat(dir, &st) == 0,   fs::ResultPathNotFound());
+                R_UNLESS(entry_type == fs::DirectoryEntryType_Directory, fs::ResultPathNotFound());
-                    R_UNLESS((S_ISDIR(st.st_mode)), fs::ResultPathNotFound());
-                }
 
                 /* Set paths. */
                 this->path.SetFormat("%s%s", dir, "/imkvdb.arc");
@@ -337,7 +336,7 @@ namespace ams::kvdb {
                 return ResultSuccess();
             }
 
-            Result Save() {
+            Result Save(bool destructive = false) {
                 /* Create a buffer to hold the archive. */
                 AutoBuffer buffer;
                 R_TRY(buffer.Initialize(this->GetArchiveSize()));
@@ -353,7 +352,7 @@ namespace ams::kvdb {
                 }
 
                 /* Save the buffer to disk. */
-                return this->Commit(buffer);
+                return this->Commit(buffer, destructive);
             }
 
             Result Set(const Key &key, const void *value, size_t value_size) {
@@ -468,27 +467,38 @@ namespace ams::kvdb {
                 return this->index.find(key);
             }
         private:
-            Result Commit(const AutoBuffer &buffer) {
+            Result SaveArchiveToFile(const char *path, const void *buf, size_t size) {
-                /* Try to delete temporary archive, but allow deletion failure (it may not exist). */
+                /* Try to delete the archive, but allow deletion failure. */
-                std::remove(this->temp_path.Get());
+                fs::DeleteFile(path);
 
-                /* Create new temporary archive. */
+                /* Create new archive. */
-                R_TRY(fsdevCreateFile(this->temp_path.Get(), buffer.GetSize(), 0));
+                R_TRY(fs::CreateFile(path, size));
 
-                /* Write data to the temporary archive. */
+                /* Write data to the archive. */
                 {
-                    FILE *f = fopen(this->temp_path, "r+b");
+                    fs::FileHandle file;
-                    R_UNLESS(f != nullptr, fsdevGetLastResult());
+                    R_TRY(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Write));
-                    ON_SCOPE_EXIT { fclose(f); };
+                    ON_SCOPE_EXIT { fs::CloseFile(file); };
-
+                    R_TRY(fs::WriteFile(file, 0, buf, size, fs::WriteOption::Flush));
-                    R_UNLESS(fwrite(buffer.Get(), buffer.GetSize(), 1, f) == 1, fsdevGetLastResult());
                 }
 
-                /* Try to delete the saved archive, but allow deletion failure. */
+                return ResultSuccess();
-                std::remove(this->path.Get());
+            }
 
-                /* Rename the path. */
+            Result Commit(const AutoBuffer &buffer, bool destructive) {
-                R_UNLESS(std::rename(this->temp_path.Get(), this->path.Get()) == 0, fsdevGetLastResult());
+                if (destructive) {
+                    /* Delete and save to the real archive. */
+                    R_TRY(SaveArchiveToFile(this->path.Get(), buffer.Get(), buffer.GetSize()));
+                } else {
+                    /* Delete and save to a temporary archive. */
+                    R_TRY(SaveArchiveToFile(this->temp_path.Get(), buffer.Get(), buffer.GetSize()));
+
+                    /* Try to delete the saved archive, but allow deletion failure. */
+                    fs::DeleteFile(this->path.Get());
+
+                    /* Rename the path. */
+                    R_TRY(fs::RenameFile(this->temp_path.Get(), this->path.Get()));
+                }
 
                 return ResultSuccess();
             }
@@ -505,18 +515,17 @@ namespace ams::kvdb {
 
             Result ReadArchiveFile(AutoBuffer *dst) const {
                 /* Open the file. */
-                FILE *f = fopen(this->path, "rb");
+                fs::FileHandle file;
-                R_UNLESS(f != nullptr, fsdevGetLastResult());
+                R_TRY(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Read));
-                ON_SCOPE_EXIT { fclose(f); };
+                ON_SCOPE_EXIT { fs::CloseFile(file); };
 
                 /* Get the archive file size. */
-                fseek(f, 0, SEEK_END);
+                s64 archive_size;
-                const size_t archive_size = ftell(f);
+                R_TRY(fs::GetFileSize(std::addressof(archive_size), file));
-                fseek(f, 0, SEEK_SET);
 
                 /* Make a new buffer, read the file. */
-                R_TRY(dst->Initialize(archive_size));
+                R_TRY(dst->Initialize(static_cast<size_t>(archive_size)));
-                R_UNLESS(fread(dst->Get(), archive_size, 1, f) == 1, fsdevGetLastResult());
+                R_TRY(fs::ReadFile(file, 0, dst->Get(), dst->GetSize()));
 
                 return ResultSuccess();
             }

libraries/libstratosphere/include/stratosphere/ldr/ldr_pm_api.hpp

@@ -15,7 +15,7 @@
  */
 
 #pragma once
-#include "ldr_types.hpp"
+#include <stratosphere/ldr/ldr_types.hpp>
 
 namespace ams::ldr::pm {
 

libraries/libstratosphere/include/stratosphere/ldr/ldr_types.hpp

@@ -16,8 +16,9 @@
 
 #pragma once
 #include <vapours.hpp>
-#include "../ncm/ncm_types.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
-#include "../sf/sf_buffer_tags.hpp"
+#include <stratosphere/ncm/ncm_program_location.hpp>
+#include <stratosphere/sf/sf_buffer_tags.hpp>
 
 namespace ams::ldr {
 

libraries/libstratosphere/include/stratosphere/lr.hpp

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2018-2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_api.hpp>
+#include <stratosphere/lr/lr_location_resolver_manager_impl.hpp>

libraries/libstratosphere/include/stratosphere/lr/lr_add_on_content_location_resolver.hpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_i_add_on_content_location_resolver.hpp>
+
+namespace ams::lr {
+
+    class AddOnContentLocationResolver {
+        NON_COPYABLE(AddOnContentLocationResolver);
+        private:
+            std::shared_ptr<IAddOnContentLocationResolver> interface;
+        public:
+            AddOnContentLocationResolver() { /* ... */ }
+            explicit AddOnContentLocationResolver(std::shared_ptr<IAddOnContentLocationResolver> intf) : interface(std::move(intf)) { /* ... */ }
+
+            AddOnContentLocationResolver(AddOnContentLocationResolver &&rhs) {
+                this->interface = std::move(rhs.interface);
+            }
+
+            AddOnContentLocationResolver &operator=(AddOnContentLocationResolver &&rhs) {
+                AddOnContentLocationResolver(std::move(rhs)).Swap(*this);
+                return *this;
+            }
+
+            void Swap(AddOnContentLocationResolver &rhs) {
+                std::swap(this->interface, rhs.interface);
+            }
+        public:
+            /* Actual commands. */
+            Result ResolveAddOnContentPath(Path *out, ncm::DataId id) {
+                AMS_ASSERT(this->interface);
+                return this->interface->ResolveAddOnContentPath(out, id);
+            }
+
+            Result RegisterAddOnContentStorage(ncm::DataId id, ncm::ApplicationId application_id, ncm::StorageId storage_id) {
+                AMS_ASSERT(this->interface);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    return this->interface->RegisterAddOnContentStorage(id, application_id, storage_id);
+                } else {
+                    return this->interface->RegisterAddOnContentStorageDeprecated(id, storage_id);
+                }
+            }
+
+            Result UnregisterAllAddOnContentPath() {
+                AMS_ASSERT(this->interface);
+                return this->interface->UnregisterAllAddOnContentPath();
+            }
+
+            Result RefreshApplicationAddOnContent(const ncm::ApplicationId *ids, size_t num_ids) {
+                AMS_ASSERT(this->interface);
+                return this->interface->RefreshApplicationAddOnContent(sf::InArray<ncm::ApplicationId>(ids, num_ids));
+            }
+
+            Result UnregisterApplicationAddOnContent(ncm::ApplicationId id) {
+                AMS_ASSERT(this->interface);
+                return this->interface->UnregisterApplicationAddOnContent(id);
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_api.hpp

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_location_resolver.hpp>
+#include <stratosphere/lr/lr_add_on_content_location_resolver.hpp>
+#include <stratosphere/lr/lr_registered_location_resolver.hpp>
+
+namespace ams::lr {
+
+    /* Management. */
+    void Initialize();
+    void Finalize();
+
+    /* Service API. */
+    Result OpenLocationResolver(LocationResolver *out, ncm::StorageId storage_id);
+    Result OpenRegisteredLocationResolver(RegisteredLocationResolver *out);
+    Result OpenAddOnContentLocationResolver(AddOnContentLocationResolver *out);
+    Result RefreshLocationResolver(ncm::StorageId storage_id);
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_i_add_on_content_location_resolver.hpp

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+
+namespace ams::lr {
+
+    class IAddOnContentLocationResolver : public sf::IServiceObject {
+        protected:
+            enum class CommandId {
+                ResolveAddOnContentPath                  = 0,
+                RegisterAddOnContentStorageDeprecated    = 1,
+                RegisterAddOnContentStorage              = 1,
+                UnregisterAllAddOnContentPath            = 2,
+                RefreshApplicationAddOnContent           = 3,
+                UnregisterApplicationAddOnContent        = 4,
+            };
+        public:
+            /* Actual commands. */
+            virtual Result ResolveAddOnContentPath(sf::Out<Path> out, ncm::DataId id) = 0;
+            virtual Result RegisterAddOnContentStorageDeprecated(ncm::DataId id, ncm::StorageId storage_id) = 0;
+            virtual Result RegisterAddOnContentStorage(ncm::DataId id, ncm::ApplicationId application_id, ncm::StorageId storage_id) = 0;
+            virtual Result UnregisterAllAddOnContentPath() = 0;
+            virtual Result RefreshApplicationAddOnContent(const sf::InArray<ncm::ApplicationId> &ids) = 0;
+            virtual Result UnregisterApplicationAddOnContent(ncm::ApplicationId id) = 0;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(ResolveAddOnContentPath,               hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(RegisterAddOnContentStorageDeprecated, hos::Version_200, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RegisterAddOnContentStorage,           hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(UnregisterAllAddOnContentPath,         hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(RefreshApplicationAddOnContent,        hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(UnregisterApplicationAddOnContent,     hos::Version_900),
+            };
+    };
+
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_i_location_resolver.hpp

@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+
+namespace ams::lr {
+
+    class ILocationResolver : public sf::IServiceObject {
+        NON_COPYABLE(ILocationResolver);
+        NON_MOVEABLE(ILocationResolver);
+        protected:
+            enum class CommandId {
+                ResolveProgramPath                                   = 0,
+                RedirectProgramPath                                  = 1,
+                ResolveApplicationControlPath                        = 2,
+                ResolveApplicationHtmlDocumentPath                   = 3,
+                ResolveDataPath                                      = 4,
+                RedirectApplicationControlPathDeprecated             = 5,
+                RedirectApplicationControlPath                       = 5,
+                RedirectApplicationHtmlDocumentPathDeprecated        = 6,
+                RedirectApplicationHtmlDocumentPath                  = 6,
+                ResolveApplicationLegalInformationPath               = 7,
+                RedirectApplicationLegalInformationPathDeprecated    = 8,
+                RedirectApplicationLegalInformationPath              = 8,
+                Refresh                                              = 9,
+                RedirectApplicationProgramPathDeprecated             = 10,
+                RedirectApplicationProgramPath                       = 10,
+                ClearApplicationRedirectionDeprecated                = 11,
+                ClearApplicationRedirection                          = 11,
+                EraseProgramRedirection                              = 12,
+                EraseApplicationControlRedirection                   = 13,
+                EraseApplicationHtmlDocumentRedirection              = 14,
+                EraseApplicationLegalInformationRedirection          = 15,
+                ResolveProgramPathForDebug                           = 16,
+                RedirectProgramPathForDebug                          = 17,
+                RedirectApplicationProgramPathForDebugDeprecated     = 18,
+                RedirectApplicationProgramPathForDebug               = 18,
+                EraseProgramRedirectionForDebug                      = 19,
+            };
+        public:
+            ILocationResolver() { /* ... */ }
+        public:
+            /* Actual commands. */
+            virtual Result ResolveProgramPath(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result RedirectProgramPath(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result ResolveApplicationControlPath(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result ResolveApplicationHtmlDocumentPath(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result ResolveDataPath(sf::Out<Path> out, ncm::DataId id) = 0;
+            virtual Result RedirectApplicationControlPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationControlPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result RedirectApplicationHtmlDocumentPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationHtmlDocumentPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result ResolveApplicationLegalInformationPath(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationLegalInformationPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationLegalInformationPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result Refresh() = 0;
+            virtual Result RedirectApplicationProgramPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationProgramPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result ClearApplicationRedirectionDeprecated() = 0;
+            virtual Result ClearApplicationRedirection(const sf::InArray<ncm::ProgramId> &excluding_ids) = 0;
+            virtual Result EraseProgramRedirection(ncm::ProgramId id) = 0;
+            virtual Result EraseApplicationControlRedirection(ncm::ProgramId id) = 0;
+            virtual Result EraseApplicationHtmlDocumentRedirection(ncm::ProgramId id) = 0;
+            virtual Result EraseApplicationLegalInformationRedirection(ncm::ProgramId id) = 0;
+            virtual Result ResolveProgramPathForDebug(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result RedirectProgramPathForDebug(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationProgramPathForDebugDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectApplicationProgramPathForDebug(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result EraseProgramRedirectionForDebug(ncm::ProgramId id) = 0;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(ResolveProgramPath),
+                MAKE_SERVICE_COMMAND_META(RedirectProgramPath),
+                MAKE_SERVICE_COMMAND_META(ResolveApplicationControlPath),
+                MAKE_SERVICE_COMMAND_META(ResolveApplicationHtmlDocumentPath),
+                MAKE_SERVICE_COMMAND_META(ResolveDataPath),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationControlPathDeprecated,          hos::Version_100, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationControlPath,                    hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationHtmlDocumentPathDeprecated,     hos::Version_100, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationHtmlDocumentPath,               hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(ResolveApplicationLegalInformationPath),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationLegalInformationPathDeprecated, hos::Version_100, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationLegalInformationPath,           hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(Refresh),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationProgramPathDeprecated,          hos::Version_500, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationProgramPath,                    hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(ClearApplicationRedirectionDeprecated,             hos::Version_500, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(ClearApplicationRedirection,                       hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(EraseProgramRedirection,                           hos::Version_500),
+                MAKE_SERVICE_COMMAND_META(EraseApplicationControlRedirection,                hos::Version_500),
+                MAKE_SERVICE_COMMAND_META(EraseApplicationHtmlDocumentRedirection,           hos::Version_500),
+                MAKE_SERVICE_COMMAND_META(EraseApplicationLegalInformationRedirection,       hos::Version_500),
+                MAKE_SERVICE_COMMAND_META(ResolveProgramPathForDebug,                        hos::Version_700),
+                MAKE_SERVICE_COMMAND_META(RedirectProgramPathForDebug,                       hos::Version_700),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationProgramPathForDebugDeprecated,  hos::Version_700, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectApplicationProgramPathForDebug,            hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(EraseProgramRedirectionForDebug,                   hos::Version_700),
+            };
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_i_location_resolver_manager.hpp

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_i_location_resolver.hpp>
+#include <stratosphere/lr/lr_i_add_on_content_location_resolver.hpp>
+#include <stratosphere/lr/lr_i_registered_location_resolver.hpp>
+
+namespace ams::lr {
+
+    class ILocationResolverManager : public sf::IServiceObject {
+        protected:
+            enum class CommandId {
+                OpenLocationResolver                = 0,
+                OpenRegisteredLocationResolver      = 1,
+                RefreshLocationResolver             = 2,
+                OpenAddOnContentLocationResolver    = 3,
+            };
+        public:
+            /* Actual commands. */
+            virtual Result OpenLocationResolver(sf::Out<std::shared_ptr<ILocationResolver>> out, ncm::StorageId storage_id) = 0;
+            virtual Result OpenRegisteredLocationResolver(sf::Out<std::shared_ptr<IRegisteredLocationResolver>> out) = 0;
+            virtual Result RefreshLocationResolver(ncm::StorageId storage_id) = 0;
+            virtual Result OpenAddOnContentLocationResolver(sf::Out<std::shared_ptr<IAddOnContentLocationResolver>> out) = 0;
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_i_registered_location_resolver.hpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+
+namespace ams::lr {
+
+    class IRegisteredLocationResolver : public sf::IServiceObject {
+        protected:
+            enum class CommandId {
+                ResolveProgramPath                    = 0,
+                RegisterProgramPathDeprecated         = 1,
+                RegisterProgramPath                   = 1,
+                UnregisterProgramPath                 = 2,
+                RedirectProgramPathDeprecated         = 3,
+                RedirectProgramPath                   = 3,
+                ResolveHtmlDocumentPath               = 4,
+                RegisterHtmlDocumentPathDeprecated    = 5,
+                RegisterHtmlDocumentPath              = 5,
+                UnregisterHtmlDocumentPath            = 6,
+                RedirectHtmlDocumentPathDeprecated    = 7,
+                RedirectHtmlDocumentPath              = 7,
+                Refresh                               = 8,
+                RefreshExcluding                      = 9,
+            };
+        public:
+            /* Actual commands. */
+            virtual Result ResolveProgramPath(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result RegisterProgramPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RegisterProgramPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result UnregisterProgramPath(ncm::ProgramId id) = 0;
+            virtual Result RedirectProgramPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectProgramPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result ResolveHtmlDocumentPath(sf::Out<Path> out, ncm::ProgramId id) = 0;
+            virtual Result RegisterHtmlDocumentPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RegisterHtmlDocumentPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result UnregisterHtmlDocumentPath(ncm::ProgramId id) = 0;
+            virtual Result RedirectHtmlDocumentPathDeprecated(const Path &path, ncm::ProgramId id) = 0;
+            virtual Result RedirectHtmlDocumentPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) = 0;
+            virtual Result Refresh() = 0;
+            virtual Result RefreshExcluding(const sf::InArray<ncm::ProgramId> &ids) = 0;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(ResolveProgramPath),
+                MAKE_SERVICE_COMMAND_META(RegisterProgramPathDeprecated,      hos::Version_100, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RegisterProgramPath,                hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(UnregisterProgramPath),
+                MAKE_SERVICE_COMMAND_META(RedirectProgramPathDeprecated,      hos::Version_100, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectProgramPath,                hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(ResolveHtmlDocumentPath,            hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(RegisterHtmlDocumentPathDeprecated, hos::Version_200, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RegisterHtmlDocumentPath,           hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(UnregisterHtmlDocumentPath,         hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(RedirectHtmlDocumentPathDeprecated, hos::Version_200, hos::Version_810),
+                MAKE_SERVICE_COMMAND_META(RedirectHtmlDocumentPath,           hos::Version_900),
+                MAKE_SERVICE_COMMAND_META(Refresh,                            hos::Version_700),
+                MAKE_SERVICE_COMMAND_META(RefreshExcluding,                   hos::Version_900),
+            };
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_location_resolver.hpp

@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_i_location_resolver.hpp>
+
+namespace ams::lr {
+
+    class LocationResolver {
+        NON_COPYABLE(LocationResolver);
+        private:
+            std::shared_ptr<ILocationResolver> interface;
+        public:
+            LocationResolver() { /* ... */ }
+            explicit LocationResolver(std::shared_ptr<ILocationResolver> intf) : interface(std::move(intf)) { /* ... */ }
+
+            LocationResolver(LocationResolver &&rhs) {
+                this->interface = std::move(rhs.interface);
+            }
+
+            LocationResolver &operator=(LocationResolver &&rhs) {
+                LocationResolver(std::move(rhs)).Swap(*this);
+                return *this;
+            }
+
+            void Swap(LocationResolver &rhs) {
+                std::swap(this->interface, rhs.interface);
+            }
+        public:
+            Result ResolveProgramPath(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ResolveProgramPath(out, id);
+            }
+
+            void RedirectProgramPath(const Path &path, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                R_ABORT_UNLESS(this->interface->RedirectProgramPath(path, id));
+            }
+
+            Result ResolveApplicationControlPath(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ResolveApplicationControlPath(out, id);
+            }
+
+            Result ResolveApplicationHtmlDocumentPath(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ResolveApplicationHtmlDocumentPath(out, id);
+            }
+
+            Result ResolveDataPath(Path *out, ncm::DataId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ResolveDataPath(out, id);
+            }
+
+            void RedirectApplicationControlPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationControlPath(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationControlPathDeprecated(path, id));
+                }
+            }
+
+            void RedirectApplicationHtmlDocumentPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationHtmlDocumentPath(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationHtmlDocumentPathDeprecated(path, id));
+                }
+            }
+
+            Result ResolveApplicationLegalInformationPath(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ResolveApplicationLegalInformationPath(out, id);
+            }
+
+            void RedirectApplicationLegalInformationPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationLegalInformationPath(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationLegalInformationPathDeprecated(path, id));
+                }
+            }
+
+            Result Refresh() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Refresh();
+            }
+
+            void RedirectApplicationProgramPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationProgramPath(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationProgramPathDeprecated(path, id));
+                }
+            }
+
+            Result ClearApplicationRedirection() {
+                AMS_ASSERT(this->interface != nullptr);
+                AMS_ASSERT(hos::GetVersion() < hos::Version_900);
+                return this->ClearApplicationRedirection(nullptr, 0);
+            }
+
+            Result ClearApplicationRedirection(const ncm::ProgramId *excluding_ids, size_t num_ids) {
+                AMS_ASSERT(this->interface != nullptr);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    return this->interface->ClearApplicationRedirection(sf::InArray<ncm::ProgramId>(excluding_ids, num_ids));
+                } else {
+                    return this->interface->ClearApplicationRedirectionDeprecated();
+                }
+            }
+
+            Result EraseProgramRedirection(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->EraseProgramRedirection(id);
+            }
+
+            Result EraseApplicationControlRedirection(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->EraseApplicationControlRedirection(id);
+            }
+
+            Result EraseApplicationHtmlDocumentRedirection(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->EraseApplicationHtmlDocumentRedirection(id);
+            }
+
+            Result EraseApplicationLegalInformationRedirection(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->EraseApplicationLegalInformationRedirection(id);
+            }
+
+            Result ResolveProgramPathForDebug(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ResolveProgramPathForDebug(out, id);
+            }
+
+            void RedirectProgramPathForDebug(const Path &path, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                R_ABORT_UNLESS(this->interface->RedirectProgramPathForDebug(path, id));
+            }
+
+            void RedirectApplicationProgramPathForDebug(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationProgramPathForDebug(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectApplicationProgramPathForDebugDeprecated(path, id));
+                }
+            }
+
+            Result EraseProgramRedirectionForDebug(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->EraseProgramRedirectionForDebug(id);
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_location_resolver_manager_impl.hpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_i_location_resolver_manager.hpp>
+#include <stratosphere/ncm/ncm_bounded_map.hpp>
+
+namespace ams::lr {
+
+    class LocationResolverManagerImpl final : public ILocationResolverManager {
+        private:
+            /* Resolver storage. */
+            ncm::BoundedMap<ncm::StorageId, std::shared_ptr<ILocationResolver>, 5> location_resolvers;
+            std::shared_ptr<IRegisteredLocationResolver> registered_location_resolver = nullptr;
+            std::shared_ptr<IAddOnContentLocationResolver> add_on_content_location_resolver = nullptr;
+
+            os::Mutex mutex;
+        public:
+            /* Actual commands. */
+            virtual Result OpenLocationResolver(sf::Out<std::shared_ptr<ILocationResolver>> out, ncm::StorageId storage_id) override;
+            virtual Result OpenRegisteredLocationResolver(sf::Out<std::shared_ptr<IRegisteredLocationResolver>> out) override;
+            virtual Result RefreshLocationResolver(ncm::StorageId storage_id) override;
+            virtual Result OpenAddOnContentLocationResolver(sf::Out<std::shared_ptr<IAddOnContentLocationResolver>> out) override;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(OpenLocationResolver),
+                MAKE_SERVICE_COMMAND_META(OpenRegisteredLocationResolver),
+                MAKE_SERVICE_COMMAND_META(RefreshLocationResolver),
+                MAKE_SERVICE_COMMAND_META(OpenAddOnContentLocationResolver, hos::Version_200),
+            };
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_registered_location_resolver.hpp

@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <stratosphere/lr/lr_types.hpp>
+#include <stratosphere/lr/lr_i_registered_location_resolver.hpp>
+
+namespace ams::lr {
+
+    class RegisteredLocationResolver {
+        NON_COPYABLE(RegisteredLocationResolver);
+        private:
+            std::shared_ptr<IRegisteredLocationResolver> interface;
+        public:
+            RegisteredLocationResolver() { /* ... */ }
+            explicit RegisteredLocationResolver(std::shared_ptr<IRegisteredLocationResolver> intf) : interface(std::move(intf)) { /* ... */ }
+
+            RegisteredLocationResolver(RegisteredLocationResolver &&rhs) {
+                this->interface = std::move(rhs.interface);
+            }
+
+            RegisteredLocationResolver &operator=(RegisteredLocationResolver &&rhs) {
+                RegisteredLocationResolver(std::move(rhs)).Swap(*this);
+                return *this;
+            }
+
+            void Swap(RegisteredLocationResolver &rhs) {
+                std::swap(this->interface, rhs.interface);
+            }
+        public:
+            /* Actual commands. */
+            Result ResolveProgramPath(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface);
+                return this->interface->ResolveProgramPath(out, id);
+            }
+
+            Result RegisterProgramPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    return this->interface->RegisterProgramPath(path, id, owner_id);
+                } else {
+                    return this->interface->RegisterProgramPathDeprecated(path, id);
+                }
+            }
+
+            Result UnregisterProgramPath(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface);
+                return this->interface->UnregisterProgramPath(id);
+            }
+
+            void RedirectProgramPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectProgramPath(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectProgramPathDeprecated(path, id));
+                }
+            }
+
+            Result ResolveHtmlDocumentPath(Path *out, ncm::ProgramId id) {
+                AMS_ASSERT(this->interface);
+                return this->interface->ResolveHtmlDocumentPath(out, id);
+            }
+
+            Result RegisterHtmlDocumentPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    return this->interface->RegisterHtmlDocumentPath(path, id, owner_id);
+                } else {
+                    return this->interface->RegisterHtmlDocumentPathDeprecated(path, id);
+                }
+            }
+
+            Result UnregisterHtmlDocumentPath(ncm::ProgramId id) {
+                AMS_ASSERT(this->interface);
+                return this->interface->UnregisterHtmlDocumentPath(id);
+            }
+
+            void RedirectHtmlDocumentPath(const Path &path, ncm::ProgramId id, ncm::ProgramId owner_id) {
+                AMS_ASSERT(this->interface);
+                if (hos::GetVersion() >= hos::Version_900) {
+                    R_ABORT_UNLESS(this->interface->RedirectHtmlDocumentPath(path, id, owner_id));
+                } else {
+                    R_ABORT_UNLESS(this->interface->RedirectHtmlDocumentPathDeprecated(path, id));
+                }
+            }
+
+            Result Refresh() {
+                AMS_ASSERT(this->interface);
+                return this->interface->Refresh();
+            }
+
+            Result RefreshExcluding(const ncm::ProgramId *excluding_ids, size_t num_ids) {
+                AMS_ASSERT(this->interface);
+                return this->interface->RefreshExcluding(sf::InArray<ncm::ProgramId>(excluding_ids, num_ids));
+            }
+
+    };
+
+}

libraries/libstratosphere/include/stratosphere/lr/lr_types.hpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/fs/fs_directory.hpp>
+#include <stratosphere/sf/sf_buffer_tags.hpp>
+
+namespace ams::lr {
+
+    struct alignas(4) Path : ams::sf::LargeData {
+        char str[fs::EntryNameLengthMax];
+
+        static constexpr Path Encode(const char *p) {
+            Path path = {};
+            /* Copy C string to path, terminating when a null byte is found. */
+            for (size_t i = 0; i < sizeof(path) - 1; i++) {
+                path.str[i] = p[i];
+                if (p[i] == '\x00') {
+                    break;
+                }
+            }
+            return path;
+        }
+
+        constexpr inline size_t GetLength() const {
+            /* Determine length from the first null byte occurence. */
+            size_t len = 0;
+            for (size_t i = 0; i < sizeof(this->str) - 1 && this->str[i] != '\x00'; i++) {
+                len++;
+            }
+            return len;
+        }
+
+        constexpr inline bool IsValid() const {
+            /* Determine validity by presence of a terminating null byte. */
+            for (size_t i = 0; i < sizeof(this->str); i++) {
+                if (this->str[i] == '\x00') {
+                    return true;
+                }
+            }
+            return false;
+        }
+    };
+
+    static_assert(std::is_pod<Path>::value && sizeof(Path) == fs::EntryNameLengthMax);
+
+}

libraries/libstratosphere/include/stratosphere/ncm.hpp

@@ -16,4 +16,14 @@
 
 #pragma once
 
-#include "ncm/ncm_types.hpp"
+#include <stratosphere/ncm/ncm_ids.hpp>
+#include <stratosphere/ncm/ncm_program_location.hpp>
+#include <stratosphere/ncm/ncm_auto_buffer.hpp>
+#include <stratosphere/ncm/ncm_make_path.hpp>
+#include <stratosphere/ncm/ncm_content_id_utils.hpp>
+#include <stratosphere/ncm/ncm_content_meta.hpp>
+#include <stratosphere/ncm/ncm_content_meta_database.hpp>
+#include <stratosphere/ncm/ncm_content_storage.hpp>
+#include <stratosphere/ncm/ncm_content_manager_impl.hpp>
+#include <stratosphere/ncm/ncm_content_meta_utils.hpp>
+#include <stratosphere/ncm/ncm_api.hpp>

libraries/libstratosphere/include/stratosphere/ncm/ncm_api.hpp

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_content_meta_database.hpp>
+#include <stratosphere/ncm/ncm_content_storage.hpp>
+#include <stratosphere/ncm/ncm_i_content_manager.hpp>
+
+namespace ams::ncm {
+
+    /* Management. */
+    void Initialize();
+    void Finalize();
+
+    void InitializeWithObject(std::shared_ptr<IContentManager> manager_object);
+
+    /* Service API. */
+    Result CreateContentStorage(StorageId storage_id);
+    Result CreateContentMetaDatabase(StorageId storage_id);
+
+    Result VerifyContentStorage(StorageId storage_id);
+    Result VerifyContentMetaDatabase(StorageId storage_id);
+
+    Result OpenContentStorage(ContentStorage *out, StorageId storage_id);
+    Result OpenContentMetaDatabase(ContentMetaDatabase *out, StorageId storage_id);
+
+    Result CleanupContentMetaDatabase(StorageId storage_id);
+
+    Result ActivateContentStorage(StorageId storage_id);
+    Result InactivateContentStorage(StorageId storage_id);
+
+    Result ActivateContentMetaDatabase(StorageId storage_id);
+    Result InactivateContentMetaDatabase(StorageId storage_id);
+
+    Result InvalidateRightsIdCache();
+
+    /* Deprecated API. */
+    Result CloseContentStorageForcibly(StorageId storage_id);
+    Result CloseContentMetaDatabaseForcibly(StorageId storage_id);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_auto_buffer.hpp

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    class AutoBuffer {
+        NON_COPYABLE(AutoBuffer);
+        private:
+            u8 *buffer;
+            size_t size;
+        public:
+            AutoBuffer() : buffer(nullptr), size(0) { /* ... */ }
+
+            ~AutoBuffer() {
+                this->Reset();
+            }
+
+            AutoBuffer(AutoBuffer &&rhs) {
+                this->buffer = rhs.buffer;
+                this->size = rhs.size;
+                rhs.buffer = nullptr;
+                rhs.size = 0;
+            }
+
+            AutoBuffer& operator=(AutoBuffer &&rhs) {
+                AutoBuffer(std::move(rhs)).Swap(*this);
+                return *this;
+            }
+
+            void Swap(AutoBuffer &rhs) {
+                std::swap(this->buffer, rhs.buffer);
+                std::swap(this->size, rhs.size);
+            }
+
+            void Reset() {
+                if (this->buffer != nullptr) {
+                    std::free(this->buffer);
+                    this->buffer = nullptr;
+                    this->size = 0;
+                }
+            }
+
+            u8 *Get() const {
+                return this->buffer;
+            }
+
+            size_t GetSize() const {
+                return this->size;
+            }
+
+            Result Initialize(size_t size) {
+                /* Check that we're not already initialized. */
+                AMS_ABORT_UNLESS(this->buffer == nullptr);
+
+                /* Allocate a buffer. */
+                this->buffer = static_cast<u8 *>(std::malloc(size));
+                R_UNLESS(this->buffer != nullptr, ResultAllocationFailed());
+
+                this->size = size;
+                return ResultSuccess();
+            }
+
+            Result Initialize(const void *buf, size_t size) {
+                /* Create a new buffer of the right size. */
+                R_TRY(this->Initialize(size));
+
+                /* Copy the input data in. */
+                std::memcpy(this->buffer, buf, size);
+
+                return ResultSuccess();
+            }
+    };
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_bounded_map.hpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    template<class Key, class Value, size_t N>
+    using BoundedMap = util::BoundedMap<Key, Value, N>;
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_id.hpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    struct alignas(4) ContentId {
+        util::Uuid uuid;
+
+        bool operator==(const ContentId& other) const {
+            return this->uuid == other.uuid;
+        }
+
+        bool operator!=(const ContentId& other) const {
+            return this->uuid != other.uuid;
+        }
+
+        bool operator==(const util::Uuid& other) const {
+            return this->uuid == other;
+        }
+
+        bool operator!=(const util::Uuid& other) const {
+            return this->uuid != other;
+        }
+    };
+
+    static_assert(alignof(ContentId) == 4);
+
+    constexpr inline ContentId InvalidContentId = { util::InvalidUuid };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_id_utils.hpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/fs/fs_rights_id.hpp>
+#include <stratosphere/ncm/ncm_content_id.hpp>
+#include <stratosphere/ncm/ncm_content_info_data.hpp>
+
+namespace ams::ncm {
+
+    constexpr inline size_t ContentIdStringLength  = 2 * sizeof(ContentId);
+    constexpr inline size_t RightsIdStringLength   = 2 * sizeof(fs::RightsId);
+    constexpr inline size_t TicketFileStringLength = RightsIdStringLength + 4;
+    constexpr inline size_t CertFileStringLength   = RightsIdStringLength + 5;
+
+    struct ContentIdString {
+        char data[ContentIdStringLength + 1];
+    };
+
+    ContentIdString GetContentIdString(ContentId id);
+
+    void GetStringFromContentId(char *dst, size_t dst_size, ContentId id);
+
+    std::optional<ContentId> GetContentIdFromString(const char *str, size_t len);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_info.hpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_content_id.hpp>
+#include <stratosphere/ncm/ncm_content_type.hpp>
+
+namespace ams::ncm {
+
+    struct ContentInfo {
+        ContentId content_id;
+        u32 size_low;
+        u16 size_high;
+        ContentType content_type;
+        u8 id_offset;
+
+        constexpr const ContentId &GetId() const {
+            return this->content_id;
+        }
+
+        constexpr u64 GetSize() const {
+            return (static_cast<u64>(this->size_high) << 32) | static_cast<u64>(this->size_low);
+        }
+
+        constexpr ContentType GetType() const {
+            return this->content_type;
+        }
+
+        constexpr u8 GetIdOffset() const {
+            return this->id_offset;
+        }
+
+        static constexpr ContentInfo Make(ContentId id, u64 size, ContentType type, u8 id_ofs = 0) {
+            const u32 size_low  = size & 0xFFFFFFFFu;
+            const u16 size_high = static_cast<u16>(size >> 32);
+            return {
+                .content_id   = id,
+                .size_low     = size_low,
+                .size_high    = size_high,
+                .content_type = type,
+                .id_offset    = id_ofs,
+            };
+        }
+    };
+
+    static_assert(sizeof(std::is_pod<ContentInfo>::value));
+    static_assert(sizeof(ContentInfo)  == 0x18);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_info_data.hpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_content_info.hpp>
+#include <stratosphere/ncm/ncm_content_storage.hpp>
+#include <stratosphere/ncm/ncm_storage_id.hpp>
+#include <stratosphere/ncm/ncm_content_meta_key.hpp>
+
+namespace ams::ncm {
+
+    struct Digest {
+        u8 data[crypto::Sha256Generator::HashSize];
+    };
+
+    struct PackagedContentInfo {
+        Digest digest;
+        ContentInfo info;
+
+        constexpr const ContentId &GetId() const {
+            return this->info.GetId();
+        }
+
+        constexpr const ContentType GetType() const {
+            return this->info.GetType();
+        }
+
+        constexpr const u8 GetIdOffset() const {
+            return this->info.GetIdOffset();
+        }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_management_utils.hpp

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_content_meta.hpp>
+#include <stratosphere/ncm/ncm_content_meta_database.hpp>
+#include <stratosphere/ncm/ncm_content_storage.hpp>
+
+namespace ams::ncm {
+
+    class ContentMetaDatabaseBuilder {
+        private:
+            ContentMetaDatabase *db;
+        private:
+            Result BuildFromPackageContentMeta(void *buf, size_t size, const ContentInfo &meta_info);
+        public:
+            explicit ContentMetaDatabaseBuilder(ContentMetaDatabase *d) : db(d) { /* ... */ }
+
+            Result BuildFromStorage(ContentStorage *storage);
+            Result BuildFromPackage(const char *package_root_path);
+
+            Result Cleanup();
+    };
+
+    Result ListApplicationPackage(s32 *out_count, ApplicationId *out_ids, s32 max_out_ids, const char *package_root_path);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_manager_config.hpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    struct ContentManagerConfig {
+        bool build_system_database;
+        bool import_database_from_system_on_sd;
+
+        bool HasAnyConfig() const {
+            return this->ShouldBuildDatabase() || this->import_database_from_system_on_sd;
+        }
+
+        bool ShouldBuildDatabase() const {
+            return hos::GetVersion() < hos::Version_400 || this->build_system_database;
+        }
+
+        bool ShouldImportDatabaseFromSignedSystemPartitionOnSd() const {
+            return this->import_database_from_system_on_sd;
+        }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_manager_impl.hpp

@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/os.hpp>
+#include <stratosphere/fs/fs_mount.hpp>
+#include <stratosphere/fs/fs_bis.hpp>
+#include <stratosphere/fs/fs_content_storage.hpp>
+#include <stratosphere/fs/fs_system_save_data.hpp>
+#include <stratosphere/ncm/ncm_i_content_manager.hpp>
+#include <stratosphere/ncm/ncm_content_manager_config.hpp>
+#include <stratosphere/ncm/ncm_content_meta_database.hpp>
+#include <stratosphere/ncm/ncm_bounded_map.hpp>
+#include <stratosphere/ncm/ncm_rights_id_cache.hpp>
+#include <stratosphere/ncm/ncm_content_management_utils.hpp>
+#include <stratosphere/ncm/ncm_content_meta_utils.hpp>
+#include <stratosphere/kvdb/kvdb_memory_key_value_store.hpp>
+
+namespace ams::ncm {
+
+    struct SystemSaveDataInfo {
+        u64 id;
+        u64 size;
+        u64 journal_size;
+        u32 flags;
+        fs::SaveDataSpaceId space_id;
+    };
+    static_assert(std::is_pod<SystemSaveDataInfo>::value);
+
+    class ContentManagerImpl final : public IContentManager {
+        private:
+            constexpr static size_t MaxContentStorageRoots         = 8;
+            constexpr static size_t MaxContentMetaDatabaseRoots    = 8;
+        private:
+            struct ContentStorageRoot {
+                NON_COPYABLE(ContentStorageRoot);
+                NON_MOVEABLE(ContentStorageRoot);
+
+                char mount_name[fs::MountNameLengthMax + 1];
+                char path[128];
+                StorageId storage_id;
+                fs::ContentStorageId content_storage_id;
+                std::shared_ptr<IContentStorage> content_storage;
+
+                ContentStorageRoot() { /* ... */ }
+            };
+
+            struct ContentMetaDatabaseRoot {
+                NON_COPYABLE(ContentMetaDatabaseRoot);
+                NON_MOVEABLE(ContentMetaDatabaseRoot);
+
+                char mount_name[fs::MountNameLengthMax + 1];
+                char path[128];
+                StorageId storage_id;
+                SystemSaveDataInfo info;
+                std::shared_ptr<IContentMetaDatabase> content_meta_database;
+                std::optional<kvdb::MemoryKeyValueStore<ContentMetaKey>> kvs;
+                u32 max_content_metas;
+
+                ContentMetaDatabaseRoot() { /* ... */ }
+            };
+        private:
+            os::RecursiveMutex mutex;
+            bool initialized;
+            ContentStorageRoot content_storage_roots[MaxContentStorageRoots];
+            ContentMetaDatabaseRoot content_meta_database_roots[MaxContentMetaDatabaseRoots];
+            u32 num_content_storage_entries;
+            u32 num_content_meta_entries;
+            RightsIdCache rights_id_cache;
+        public:
+            ContentManagerImpl() : initialized(false) { /* ... */ };
+            ~ContentManagerImpl();
+        public:
+            Result Initialize(const ContentManagerConfig &config);
+        private:
+            /* Helpers. */
+            Result GetContentStorageRoot(ContentStorageRoot **out, StorageId id);
+            Result GetContentMetaDatabaseRoot(ContentMetaDatabaseRoot **out, StorageId id);
+
+            Result InitializeContentStorageRoot(ContentStorageRoot *out, StorageId storage_id, fs::ContentStorageId content_storage_id);
+            Result InitializeGameCardContentStorageRoot(ContentStorageRoot *out);
+
+            Result InitializeContentMetaDatabaseRoot(ContentMetaDatabaseRoot *out, StorageId storage_id, const SystemSaveDataInfo &info, size_t max_content_metas);
+            Result InitializeGameCardContentMetaDatabaseRoot(ContentMetaDatabaseRoot *out, size_t max_content_metas);
+
+            Result BuildContentMetaDatabase(StorageId storage_id);
+            Result ImportContentMetaDatabase(StorageId storage_id, bool from_signed_partition);
+            Result ImportContentMetaDatabaseImpl(StorageId storage_id, const char *import_mount_name, const char *path);
+
+            Result EnsureAndMountSystemSaveData(const char *mount, const SystemSaveDataInfo &info) const;
+        public:
+            /* Actual commands. */
+            virtual Result CreateContentStorage(StorageId storage_id) override;
+            virtual Result CreateContentMetaDatabase(StorageId storage_id) override;
+            virtual Result VerifyContentStorage(StorageId storage_id) override;
+            virtual Result VerifyContentMetaDatabase(StorageId storage_id) override;
+            virtual Result OpenContentStorage(sf::Out<std::shared_ptr<IContentStorage>> out, StorageId storage_id) override;
+            virtual Result OpenContentMetaDatabase(sf::Out<std::shared_ptr<IContentMetaDatabase>> out, StorageId storage_id) override;
+            virtual Result CloseContentStorageForcibly(StorageId storage_id) override;
+            virtual Result CloseContentMetaDatabaseForcibly(StorageId storage_id) override;
+            virtual Result CleanupContentMetaDatabase(StorageId storage_id) override;
+            virtual Result ActivateContentStorage(StorageId storage_id) override;
+            virtual Result InactivateContentStorage(StorageId storage_id) override;
+            virtual Result ActivateContentMetaDatabase(StorageId storage_id) override;
+            virtual Result InactivateContentMetaDatabase(StorageId storage_id) override;
+            virtual Result InvalidateRightsIdCache() override;
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_meta.hpp

@@ -0,0 +1,315 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_content_meta_id.hpp>
+#include <stratosphere/ncm/ncm_content_meta_key.hpp>
+#include <stratosphere/ncm/ncm_content_info.hpp>
+#include <stratosphere/ncm/ncm_content_info_data.hpp>
+#include <stratosphere/ncm/ncm_storage_id.hpp>
+
+namespace ams::ncm {
+
+    enum ContentMetaAttribute : u8 {
+        ContentMetaAttribute_None                   = (0 << 0),
+        ContentMetaAttribute_IncludesExFatDriver    = (1 << 0),
+        ContentMetaAttribute_Rebootless             = (1 << 1),
+    };
+
+    struct ContentMetaInfo {
+        u64 id;
+        u32 version;
+        ContentMetaType type;
+        u8 attributes;
+        u8 padding[2];
+
+        static constexpr ContentMetaInfo Make(u64 id, u32 version, ContentMetaType type, u8 attributes) {
+            return {
+                .id         = id,
+                .version    = version,
+                .type       = type,
+                .attributes = attributes,
+            };
+        }
+
+        constexpr ContentMetaKey ToKey() {
+            return ContentMetaKey::Make(this->id, this->version, this->type);
+        }
+    };
+
+    static_assert(sizeof(ContentMetaInfo) == 0x10);
+
+    struct ContentMetaHeader {
+        u16 extended_header_size;
+        u16 content_count;
+        u16 content_meta_count;
+        u8 attributes;
+        StorageId storage_id;
+    };
+
+    static_assert(sizeof(ContentMetaHeader) == 0x8);
+
+    struct PackagedContentMetaHeader {
+        u64 id;
+        u32 version;
+        ContentMetaType type;
+        u8 reserved_0D;
+        u16 extended_header_size;
+        u16 content_count;
+        u16 content_meta_count;
+        u8 attributes;
+        u8 storage_id;
+        ContentInstallType install_type;
+        u8 reserved_17;
+        u32 required_download_system_version;
+        u8 reserved_1C[4];
+    };
+    static_assert(sizeof(PackagedContentMetaHeader) == 0x20);
+    static_assert(OFFSETOF(PackagedContentMetaHeader, reserved_0D) == 0x0D);
+    static_assert(OFFSETOF(PackagedContentMetaHeader, reserved_17) == 0x17);
+    static_assert(OFFSETOF(PackagedContentMetaHeader, reserved_1C) == 0x1C);
+
+    struct ApplicationMetaExtendedHeader {
+        PatchId patch_id;
+        u32 required_system_version;
+        u32 required_application_version;
+    };
+
+    struct PatchMetaExtendedHeader {
+        ApplicationId application_id;
+        u32 required_system_version;
+        u32 extended_data_size;
+        u8 reserved[0x8];
+    };
+
+    struct AddOnContentMetaExtendedHeader {
+        ApplicationId application_id;
+        u32 required_application_version;
+        u32 padding;
+    };
+
+    struct DeltaMetaExtendedHeader {
+        ApplicationId application_id;
+        u32 extended_data_size;
+        u32 padding;
+    };
+
+    template<typename ContentMetaHeaderType, typename ContentInfoType>
+    class ContentMetaAccessor {
+        public:
+            using HeaderType = ContentMetaHeaderType;
+            using InfoType   = ContentInfoType;
+        private:
+            void *data;
+            const size_t size;
+            bool is_header_valid;
+        private:
+            static size_t GetExtendedHeaderSize(ContentMetaType type) {
+                switch (type) {
+                    case ContentMetaType::Application:  return sizeof(ApplicationMetaExtendedHeader);
+                    case ContentMetaType::Patch:        return sizeof(PatchMetaExtendedHeader);
+                    case ContentMetaType::AddOnContent: return sizeof(AddOnContentMetaExtendedHeader);
+                    case ContentMetaType::Delta:        return sizeof(DeltaMetaExtendedHeader);
+                    default:                            return 0;
+                }
+            }
+        protected:
+            constexpr ContentMetaAccessor(const void *d, size_t sz) : data(const_cast<void *>(d)), size(sz), is_header_valid(true) { /* ... */ }
+            constexpr ContentMetaAccessor(void *d, size_t sz) : data(d), size(sz), is_header_valid(false) { /* ... */ }
+
+            template<class NewHeaderType, class NewInfoType>
+            static constexpr size_t CalculateSizeImpl(size_t ext_header_size, size_t content_count, size_t content_meta_count, size_t extended_data_size, bool has_digest) {
+                return sizeof(NewHeaderType) + ext_header_size + content_count * sizeof(NewInfoType) + content_meta_count * sizeof(ContentMetaInfo) + extended_data_size + (has_digest ? sizeof(Digest) : 0);
+            }
+
+            static constexpr size_t CalculateSize(ContentMetaType type, size_t content_count, size_t content_meta_count, size_t extended_data_size, bool has_digest = false) {
+                return CalculateSizeImpl<ContentMetaHeaderType, ContentInfoType>(GetExtendedHeaderSize(type), content_count, content_meta_count, extended_data_size, has_digest);
+            }
+
+            uintptr_t GetExtendedHeaderAddress() const {
+                return reinterpret_cast<uintptr_t>(this->data) + sizeof(HeaderType);
+            }
+
+            uintptr_t GetContentInfoStartAddress() const {
+                return this->GetExtendedHeaderAddress() + this->GetExtendedHeaderSize();
+            }
+
+            uintptr_t GetContentInfoAddress(size_t i) const {
+                return this->GetContentInfoStartAddress() + i * sizeof(InfoType);
+            }
+
+            uintptr_t GetContentMetaInfoStartAddress() const {
+                return this->GetContentInfoAddress(this->GetContentCount());
+            }
+
+            uintptr_t GetContentMetaInfoAddress(size_t i) const {
+                return this->GetContentMetaInfoStartAddress() + i * sizeof(ContentMetaInfo);
+            }
+
+            uintptr_t GetExtendedDataAddress() const {
+                return this->GetContentMetaInfoAddress(this->GetContentMetaCount());
+            }
+
+            uintptr_t GetDigestAddress() const {
+                return this->GetExtendedDataAddress() + this->GetExtendedDataSize();
+            }
+
+            InfoType *GetWritableContentInfo(size_t i) const {
+                AMS_ABORT_UNLESS(i < this->GetContentCount());
+
+                return reinterpret_cast<InfoType *>(this->GetContentInfoAddress(i));
+            }
+
+            InfoType *GetWritableContentInfo(ContentType type) const {
+                InfoType *found = nullptr;
+                for (size_t i = 0; i < this->GetContentCount(); i++) {
+                    /* We want to find the info with the lowest id offset and the correct type. */
+                    InfoType *info = this->GetWritableContentInfo(i);
+                    if (info->GetType() == type && (found == nullptr || info->GetIdOffset() < found->GetIdOffset())) {
+                        found = info;
+                    }
+                }
+                return found;
+            }
+
+            InfoType *GetWritableContentInfo(ContentType type, u8 id_ofs) const {
+                for (size_t i = 0; i < this->GetContentCount(); i++) {
+                    /* We want to find the info with the correct id offset and the correct type. */
+                    if (InfoType *info = this->GetWritableContentInfo(i); info->GetType() == type && info->GetIdOffset() == id_ofs) {
+                        return info;
+                    }
+                }
+                return nullptr;
+            }
+
+        public:
+            const void *GetData() const {
+                return this->data;
+            }
+
+            size_t GetSize() const {
+                return this->size;
+            }
+
+            const HeaderType *GetHeader() const {
+                AMS_ABORT_UNLESS(this->is_header_valid);
+                return static_cast<const HeaderType *>(this->data);
+            }
+
+            ContentMetaKey GetKey() const {
+                auto header = this->GetHeader();
+                return ContentMetaKey::Make(header->id, header->version, header->type, header->install_type);
+            }
+
+            size_t GetExtendedHeaderSize() const {
+                return this->GetHeader()->extended_header_size;
+            }
+
+            template<typename ExtendedHeaderType>
+            const ExtendedHeaderType *GetExtendedHeader() const {
+                return reinterpret_cast<const ExtendedHeaderType *>(this->GetExtendedHeaderAddress());
+            }
+
+            size_t GetContentCount() const {
+                return this->GetHeader()->content_count;
+            }
+
+            const InfoType *GetContentInfo(size_t i) const {
+                AMS_ABORT_UNLESS(i < this->GetContentCount());
+
+                return this->GetWritableContentInfo(i);
+            }
+
+            const InfoType *GetContentInfo(ContentType type) const {
+                return this->GetWritableContentInfo(type);
+            }
+
+            const InfoType *GetContentInfo(ContentType type, u8 id_ofs) const {
+                return this->GetWritableContentInfo(type, id_ofs);
+            }
+
+            size_t GetContentMetaCount() const {
+                return this->GetHeader()->content_meta_count;
+            }
+
+            const ContentMetaInfo *GetContentMetaInfo(size_t i) const {
+                AMS_ABORT_UNLESS(i < this->GetContentMetaCount());
+
+                return reinterpret_cast<const ContentMetaInfo *>(this->GetContentMetaInfoAddress(i));
+            }
+
+            size_t GetExtendedDataSize() const {
+                switch (this->GetHeader()->type) {
+                    case ContentMetaType::Patch: return this->GetExtendedHeader<PatchMetaExtendedHeader>()->extended_data_size;
+                    case ContentMetaType::Delta: return this->GetExtendedHeader<DeltaMetaExtendedHeader>()->extended_data_size;
+                    default:                     return 0;
+                }
+            }
+
+            const void *GetExtendedData() const {
+                return reinterpret_cast<const void *>(this->GetExtendedDataAddress());
+            }
+
+            const Digest *GetDigest() const {
+                return reinterpret_cast<Digest *>(this->GetDigestAddress());
+            }
+
+            bool HasContent(const ContentId &id) const {
+                for (size_t i = 0; i < this->GetContentCount(); i++) {
+                    if (id == this->GetContentInfo(i)->GetId()) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+
+            std::optional<ApplicationId> GetApplicationId(const ContentMetaKey &key) const {
+                switch (key.type) {
+                    case ContentMetaType::Application:  return ApplicationId{ key.id };
+                    case ContentMetaType::Patch:        return this->GetExtendedHeader<PatchMetaExtendedHeader>()->application_id;
+                    case ContentMetaType::AddOnContent: return this->GetExtendedHeader<AddOnContentMetaExtendedHeader>()->application_id;
+                    case ContentMetaType::Delta:        return this->GetExtendedHeader<DeltaMetaExtendedHeader>()->application_id;
+                    default:                            return std::nullopt;
+                }
+            }
+
+            std::optional<ApplicationId> GetApplicationId() const {
+                return this->GetApplicationId(this->GetKey());
+            }
+    };
+
+    class ContentMetaReader : public ContentMetaAccessor<ContentMetaHeader, ContentInfo> {
+        public:
+            constexpr ContentMetaReader(const void *data, size_t size) : ContentMetaAccessor(data, size) { /* ... */ }
+
+            using ContentMetaAccessor::CalculateSize;
+    };
+
+    class PackagedContentMetaReader : public ContentMetaAccessor<PackagedContentMetaHeader, PackagedContentInfo> {
+        public:
+            constexpr PackagedContentMetaReader(const void *data, size_t size) : ContentMetaAccessor(data, size) { /* ... */ }
+
+            size_t CalculateConvertContentMetaSize() const;
+
+            void ConvertToContentMeta(void *dst, size_t size, const ContentInfo &meta);
+
+            size_t CountDeltaFragments() const;
+
+            static constexpr size_t CalculateSize(ContentMetaType type, size_t content_count, size_t content_meta_count, size_t extended_data_size) {
+                return ContentMetaAccessor::CalculateSize(type, content_count, content_meta_count, extended_data_size, true);
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_meta_database.hpp

@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_i_content_meta_database.hpp>
+
+namespace ams::ncm {
+
+    class ContentMetaDatabase {
+        NON_COPYABLE(ContentMetaDatabase);
+        public:
+            struct ListCount {
+                s32 written;
+                s32 total;
+            };
+        private:
+            std::shared_ptr<IContentMetaDatabase> interface;
+        public:
+            ContentMetaDatabase() { /* ... */ }
+            explicit ContentMetaDatabase(std::shared_ptr<IContentMetaDatabase> intf) : interface(std::move(intf)) { /* ... */ }
+
+            ContentMetaDatabase(ContentMetaDatabase &&rhs) {
+                this->interface = std::move(rhs.interface);
+            }
+
+            ContentMetaDatabase &operator=(ContentMetaDatabase &&rhs) {
+                ContentMetaDatabase(std::move(rhs)).Swap(*this);
+                return *this;
+            }
+
+            void Swap(ContentMetaDatabase &rhs) {
+                std::swap(this->interface, rhs.interface);
+            }
+        public:
+            Result Set(const ContentMetaKey &key, const void *buf, size_t size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Set(key, sf::InBuffer(buf, size));
+            }
+
+            Result Get(size_t *out_size, void *dst, size_t dst_size, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                u64 size;
+                R_TRY(this->interface->Get(std::addressof(size), key, sf::OutBuffer(dst, dst_size)));
+
+                *out_size = size;
+                return ResultSuccess();
+            }
+
+            #define AMS_NCM_DEFINE_GETTERS(Kind, IdType)                                                                                \
+            Result Get##Kind(ContentId *out, IdType##Id id, u32 version) {                                                              \
+                return this->interface->GetContentIdByType(out, ContentMetaKey::MakeUnknownType(id.value, version), ContentType::Kind); \
+            }                                                                                                                           \
+                                                                                                                                        \
+            Result GetLatest##Kind(ContentId *out, IdType##Id id) {                                                                     \
+                ContentMetaKey latest_key;                                                                                              \
+                R_TRY(this->interface->GetLatestContentMetaKey(std::addressof(latest_key), id.value));                                  \
+                return this->interface->GetContentIdByType(out, latest_key, ContentType::Kind);                                         \
+            }
+
+            AMS_NCM_DEFINE_GETTERS(Program,          Program)
+            AMS_NCM_DEFINE_GETTERS(Data,             Data)
+            AMS_NCM_DEFINE_GETTERS(Control,          Application)
+            AMS_NCM_DEFINE_GETTERS(HtmlDocument,     Application)
+            AMS_NCM_DEFINE_GETTERS(LegalInformation, Application)
+
+            #undef AMS_NCM_DEFINE_GETTERS
+
+            Result Remove(const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Remove(key);
+            }
+
+            Result Remove(SystemProgramId id, u32 version) {
+                return this->Remove(ContentMetaKey::Make(id, version));
+            }
+
+            Result Remove(SystemDataId id, u32 version) {
+                return this->Remove(ContentMetaKey::Make(id, version));
+            }
+
+            Result Remove(ApplicationId id, u32 version) {
+                return this->Remove(ContentMetaKey::Make(id, version));
+            }
+
+            Result GetContentIdByType(ContentId *out_content_id, const ContentMetaKey &key, ContentType type) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetContentIdByType(out_content_id, key, type);
+            }
+
+            Result GetContentIdByTypeAndIdOffset(ContentId *out_content_id, const ContentMetaKey &key, ContentType type, u8 id_offset) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetContentIdByTypeAndIdOffset(out_content_id, key, type, id_offset);
+            }
+
+            ListCount ListApplication(ApplicationContentMetaKey *dst, size_t dst_size) {
+                ListCount lc = {};
+                R_ABORT_UNLESS(this->interface->ListApplication(std::addressof(lc.total), std::addressof(lc.written), sf::OutArray<ApplicationContentMetaKey>(dst, dst_size), ContentMetaType::Unknown));
+                return lc;
+            }
+
+            ListCount ListContentMeta(ContentMetaKey *dst, size_t dst_size, ContentMetaType type = ContentMetaType::Unknown, ApplicationId app_id = InvalidApplicationId, u64 min = std::numeric_limits<u64>::min(), u64 max = std::numeric_limits<u64>::max(), ContentInstallType install_type = ContentInstallType::Full) {
+                ListCount lc = {};
+                R_ABORT_UNLESS(this->interface->List(std::addressof(lc.total), std::addressof(lc.written), sf::OutArray<ContentMetaKey>(dst, dst_size), type, app_id, min, max, install_type));
+                return lc;
+            }
+
+            Result GetLatest(ContentMetaKey *out_key, u64 id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetLatestContentMetaKey(out_key, id);
+            }
+
+            Result ListContentInfo(s32 *out_count, ContentInfo *dst, size_t dst_size, const ContentMetaKey &key, s32 offset) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ListContentInfo(out_count, sf::OutArray<ContentInfo>(dst, dst_size), key, offset);
+            }
+
+            Result ListContentMetaInfo(s32 *out_count, ContentMetaInfo *dst, size_t dst_size, const ContentMetaKey &key, s32 offset) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ListContentMetaInfo(out_count, sf::OutArray<ContentMetaInfo>(dst, dst_size), key, offset);
+            }
+
+            Result Has(bool *out, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Has(out, key);
+            }
+
+            Result HasAll(bool *out, const ContentMetaKey *keys, size_t num_keys) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->HasAll(out, sf::InArray<ContentMetaKey>(keys, num_keys));
+            }
+
+            Result HasContent(bool *out, const ContentMetaKey &key, const ContentId &content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->HasContent(out, key, content_id);
+            }
+
+            Result GetSize(size_t *out_size, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                u64 size;
+                R_TRY(this->interface->GetSize(std::addressof(size), key));
+
+                *out_size = size;
+                return ResultSuccess();
+            }
+
+            Result GetRequiredSystemVersion(u32 *out_version, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetRequiredSystemVersion(out_version, key);
+            }
+
+            Result GetPatchId(PatchId *out_patch_id, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetPatchId(out_patch_id, key);
+            }
+
+            Result DisableForcibly() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->DisableForcibly();
+            }
+
+            Result LookupOrphanContent(bool *out_orphaned, ContentId *content_list, size_t count) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->LookupOrphanContent(sf::OutArray<bool>(out_orphaned, count), sf::InArray<ContentId>(content_list, count));
+            }
+
+            Result Commit() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Commit();
+            }
+
+            Result GetAttributes(u8 *out_attributes, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetAttributes(out_attributes, key);
+            }
+
+            Result GetRequiredApplicationVersion(u32 *out_version, const ContentMetaKey &key) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetRequiredApplicationVersion(out_version, key);
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_meta_id.hpp

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_data_id.hpp>
+#include <stratosphere/ncm/ncm_program_id.hpp>
+
+namespace ams::ncm {
+
+    struct ApplicationId {
+        u64 value;
+
+        constexpr operator ProgramId() const {
+            return { this->value };
+        }
+
+        static const ApplicationId Start;
+        static const ApplicationId End;
+    };
+
+    constexpr inline const ApplicationId InvalidApplicationId = {};
+
+    inline constexpr const ApplicationId ApplicationId::Start   = { 0x0100000000010000ul };
+    inline constexpr const ApplicationId ApplicationId::End     = { 0x01FFFFFFFFFFFFFFul };
+
+    inline constexpr bool IsApplicationId(const ProgramId &program_id) {
+        return ApplicationId::Start <= program_id && program_id <= ApplicationId::End;
+    }
+
+    inline constexpr bool IsApplicationId(const ApplicationId &id) {
+        return true;
+    }
+
+    struct ApplicationGroupId {
+        u64 value;
+    };
+
+    struct PatchId {
+        u64 value;
+
+        constexpr operator ProgramId() const {
+            return { this->value };
+        }
+    };
+
+    struct PatchGroupId {
+        u64 value;
+    };
+
+    struct AddOnContentId {
+        u64 value;
+
+        constexpr operator DataId() const {
+            return { this->value };
+        }
+    };
+
+    struct DeltaId {
+        u64 value;
+
+        constexpr operator ProgramId() const {
+            return { this->value };
+        }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_meta_key.hpp

@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/ncm/ncm_content_meta_id.hpp>
+#include <stratosphere/ncm/ncm_content_meta_type.hpp>
+#include <stratosphere/ncm/ncm_system_content_meta_id.hpp>
+
+namespace ams::ncm {
+
+    enum class ContentInstallType : u8 {
+        Full            = 0,
+        FragmentOnly    = 1,
+        Unknown         = 7,
+    };
+
+    struct ContentMetaKey {
+        u64 id;
+        u32 version;
+        ContentMetaType type;
+        ContentInstallType install_type;
+        u8 padding[2];
+
+        bool operator<(const ContentMetaKey& rhs) const {
+            return std::tie(this->id, this->version, this->type, this->install_type) < std::tie(rhs.id, rhs.version, rhs.type, rhs.install_type);
+        }
+
+        constexpr bool operator==(const ContentMetaKey& rhs) const {
+            return std::tie(this->id, this->version, this->type, this->install_type) == std::tie(rhs.id, rhs.version, rhs.type, rhs.install_type);
+        }
+
+        constexpr bool operator!=(const ContentMetaKey& rhs) const {
+            return !(*this == rhs);
+        }
+
+        static constexpr ContentMetaKey MakeUnknownType(u64 id, u32 version) {
+            return { .id = id, .version = version, .type = ContentMetaType::Unknown };
+        }
+
+        static constexpr ContentMetaKey Make(u64 id, u32 version, ContentMetaType type) {
+            return { .id = id, .version = version, .type = type };
+        }
+
+        static constexpr ContentMetaKey Make(u64 id, u32 version, ContentMetaType type, ContentInstallType install_type) {
+            return { .id = id, .version = version, .type = type, .install_type = install_type };
+        }
+
+        static constexpr ContentMetaKey Make(SystemProgramId id, u32 version) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::SystemProgram };
+        }
+
+        static constexpr ContentMetaKey Make(SystemDataId id, u32 version) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::SystemData };
+        }
+
+        static constexpr ContentMetaKey Make(SystemUpdateId id, u32 version) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::SystemUpdate };
+        }
+
+        static constexpr ContentMetaKey Make(ApplicationId id, u32 version) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::Application };
+        }
+
+        static constexpr ContentMetaKey Make(PatchId id, u32 version) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::Patch };
+        }
+
+        static constexpr ContentMetaKey Make(PatchId id, u32 version, ContentInstallType install_type) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::Patch, .install_type = install_type };
+        }
+
+        static constexpr ContentMetaKey Make(DeltaId id, u32 version) {
+            return { .id = id.value, .version = version, .type = ContentMetaType::Delta };
+        }
+    };
+
+    static_assert(sizeof(ContentMetaKey) == 0x10);
+
+    struct ApplicationContentMetaKey {
+        ContentMetaKey key;
+        ncm::ApplicationId application_id;
+    };
+
+    static_assert(sizeof(ApplicationContentMetaKey) == 0x18);
+
+    struct StorageContentMetaKey {
+        ContentMetaKey key;
+        StorageId storage_id;
+        u8 reserved[7];
+
+        constexpr bool operator==(StorageContentMetaKey &rhs) const {
+            return this->key == rhs.key && this->storage_id == rhs.storage_id;
+        }
+
+        constexpr bool operator<(StorageContentMetaKey &rhs) const {
+            return this->key == rhs.key ? this->storage_id < rhs.storage_id : this->key < rhs.key;
+        }
+    };
+    static_assert(sizeof(StorageContentMetaKey) == 0x18);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_meta_type.hpp

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    enum class ContentMetaType : u8 {
+        Unknown                 = 0x0,
+        SystemProgram           = 0x1,
+        SystemData              = 0x2,
+        SystemUpdate            = 0x3,
+        BootImagePackage        = 0x4,
+        BootImagePackageSafe    = 0x5,
+        Application             = 0x80,
+        Patch                   = 0x81,
+        AddOnContent            = 0x82,
+        Delta                   = 0x83,
+    };
+
+    const char *GetContentMetaTypeString(ContentMetaType type);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_meta_utils.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_auto_buffer.hpp>
+#include <stratosphere/ncm/ncm_storage_id.hpp>
+#include <stratosphere/ncm/ncm_content_storage.hpp>
+#include <stratosphere/ncm/ncm_content_meta_key.hpp>
+#include <stratosphere/ncm/ncm_content_meta_database.hpp>
+
+namespace ams::ncm {
+
+    Result ReadContentMetaPath(AutoBuffer *out, const char *path);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_storage.hpp

@@ -0,0 +1,200 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_i_content_storage.hpp>
+
+namespace ams::ncm {
+
+    class ContentStorage {
+        NON_COPYABLE(ContentStorage);
+        private:
+            std::shared_ptr<IContentStorage> interface;
+        public:
+            ContentStorage() { /* ... */ }
+            explicit ContentStorage(std::shared_ptr<IContentStorage> intf) : interface(std::move(intf)) { /* ... */ }
+
+            ContentStorage(ContentStorage &&rhs) {
+                this->interface = std::move(rhs.interface);
+            }
+
+            ContentStorage &operator=(ContentStorage &&rhs) {
+                ContentStorage(std::move(rhs)).Swap(*this);
+                return *this;
+            }
+
+            void Swap(ContentStorage &rhs) {
+                std::swap(this->interface, rhs.interface);
+            }
+        public:
+            PlaceHolderId GeneratePlaceHolderId() {
+                AMS_ASSERT(this->interface != nullptr);
+
+                PlaceHolderId id;
+                R_ABORT_UNLESS(this->interface->GeneratePlaceHolderId(std::addressof(id)));
+                return id;
+            }
+
+            Result CreatePlaceHolder(PlaceHolderId placeholder_id, ContentId content_id, s64 size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->CreatePlaceHolder(placeholder_id, content_id, size);
+            }
+
+            Result DeletePlaceHolder(PlaceHolderId placeholder_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->DeletePlaceHolder(placeholder_id);
+            }
+
+            Result HasPlaceHolder(bool *out, PlaceHolderId placeholder_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->HasPlaceHolder(out, placeholder_id);
+            }
+
+            Result WritePlaceHolder(PlaceHolderId placeholder_id, s64 offset, const void *buf, size_t size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->WritePlaceHolder(placeholder_id, offset, sf::InBuffer(buf, size));
+            }
+
+            Result Register(PlaceHolderId placeholder_id, ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Register(placeholder_id, content_id);
+            }
+
+            Result Delete(ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Delete(content_id);
+            }
+
+            Result Has(bool *out, ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->Has(out, content_id);
+            }
+
+            void GetPath(Path *out, ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                R_ABORT_UNLESS(this->interface->GetPath(out, content_id));
+            }
+
+            void GetPlaceHolderPath(Path *out, PlaceHolderId placeholder_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                R_ABORT_UNLESS(this->interface->GetPlaceHolderPath(out, placeholder_id));
+            }
+
+            Result CleanupAllPlaceHolder() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->CleanupAllPlaceHolder();
+            }
+
+            Result ListPlaceHolder(s32 *out_count, PlaceHolderId *out_list, size_t out_list_size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ListPlaceHolder(out_count, sf::OutArray<PlaceHolderId>(out_list, out_list_size));
+            }
+
+            Result GetContentCount(s32 *out_count) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetContentCount(out_count);
+            }
+
+            Result ListContentId(s32 *out_count, ContentId *out_list, size_t out_list_size, s32 offset) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ListContentId(out_count, sf::OutArray<ContentId>(out_list, out_list_size), offset);
+            }
+
+            Result GetSize(s64 *out_size, ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetSizeFromContentId(out_size, content_id);
+            }
+
+            Result GetSize(s64 *out_size, PlaceHolderId placeholder_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetSizeFromPlaceHolderId(out_size, placeholder_id);
+            }
+
+            Result DisableForcibly() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->DisableForcibly();
+            }
+
+            Result RevertToPlaceHolder(PlaceHolderId placeholder_id, ContentId old_content_id, ContentId new_content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->RevertToPlaceHolder(placeholder_id, old_content_id, new_content_id);
+            }
+
+            Result SetPlaceHolderSize(PlaceHolderId placeholder_id, s64 size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->SetPlaceHolderSize(placeholder_id, size);
+            }
+
+            Result ReadContentIdFile(void *dst, size_t size, ContentId content_id, s64 offset) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->ReadContentIdFile(sf::OutBuffer(dst, size), content_id, offset);
+            }
+
+            Result GetRightsId(ams::fs::RightsId *out_rights_id, PlaceHolderId placeholder_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                AMS_ABORT_UNLESS(hos::GetVersion() < hos::Version_300);
+                return this->interface->GetRightsIdFromPlaceHolderIdDeprecated(out_rights_id, placeholder_id);
+            }
+
+            Result GetRightsId(ncm::RightsId *out_rights_id, PlaceHolderId placeholder_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                AMS_ABORT_UNLESS(hos::GetVersion() >= hos::Version_300);
+                return this->interface->GetRightsIdFromPlaceHolderId(out_rights_id, placeholder_id);
+            }
+
+            Result GetRightsId(ams::fs::RightsId *out_rights_id, ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                AMS_ABORT_UNLESS(hos::GetVersion() < hos::Version_300);
+                return this->interface->GetRightsIdFromContentIdDeprecated(out_rights_id, content_id);
+            }
+
+            Result GetRightsId(ncm::RightsId *out_rights_id, ContentId content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                AMS_ABORT_UNLESS(hos::GetVersion() >= hos::Version_300);
+                return this->interface->GetRightsIdFromContentId(out_rights_id, content_id);
+            }
+
+            Result WriteContentForDebug(ContentId content_id, s64 offset, const void *buf, size_t size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->WriteContentForDebug(content_id, offset, sf::InBuffer(buf, size));
+            }
+
+            Result GetFreeSpaceSize(s64 *out_size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetFreeSpaceSize(out_size);
+            }
+
+            Result GetTotalSpaceSize(s64 *out_size) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetTotalSpaceSize(out_size);
+            }
+
+            Result FlushPlaceHolder() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->FlushPlaceHolder();
+            }
+
+            Result RepairInvalidFileAttribute() {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->RepairInvalidFileAttribute();
+            }
+
+            Result GetRightsIdFromPlaceHolderIdWithCache(ncm::RightsId *out_rights_id, PlaceHolderId placeholder_id, ContentId cache_content_id) {
+                AMS_ASSERT(this->interface != nullptr);
+                return this->interface->GetRightsIdFromPlaceHolderIdWithCache(out_rights_id, placeholder_id, cache_content_id);
+            }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_content_type.hpp

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    enum class ContentType : u8 {
+        Meta                = 0,
+        Program             = 1,
+        Data                = 2,
+        Control             = 3,
+        HtmlDocument        = 4,
+        LegalInformation    = 5,
+        DeltaFragment       = 6,
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_data_id.hpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    struct DataId {
+        u64 value;
+
+        static const DataId Invalid;
+    };
+
+    inline constexpr bool operator==(const DataId &lhs, const DataId &rhs) {
+        return lhs.value == rhs.value;
+    }
+
+    inline constexpr bool operator!=(const DataId &lhs, const DataId &rhs) {
+        return lhs.value != rhs.value;
+    }
+
+    inline constexpr bool operator<(const DataId &lhs, const DataId &rhs) {
+        return lhs.value < rhs.value;
+    }
+
+    inline constexpr bool operator<=(const DataId &lhs, const DataId &rhs) {
+        return lhs.value <= rhs.value;
+    }
+
+    inline constexpr bool operator>(const DataId &lhs, const DataId &rhs) {
+        return lhs.value > rhs.value;
+    }
+
+    inline constexpr bool operator>=(const DataId &lhs, const DataId &rhs) {
+        return lhs.value >= rhs.value;
+    }
+
+    inline constexpr const DataId DataId::Invalid = {};
+    inline constexpr const DataId InvalidDataId = DataId::Invalid;
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_manager.hpp

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_i_content_storage.hpp>
+#include <stratosphere/ncm/ncm_i_content_meta_database.hpp>
+
+namespace ams::ncm {
+
+    class IContentManager : public sf::IServiceObject {
+        protected:
+            enum class CommandId {
+                CreateContentStorage                = 0,
+                CreateContentMetaDatabase           = 1,
+                VerifyContentStorage                = 2,
+                VerifyContentMetaDatabase           = 3,
+                OpenContentStorage                  = 4,
+                OpenContentMetaDatabase             = 5,
+                CloseContentStorageForcibly         = 6,
+                CloseContentMetaDatabaseForcibly    = 7,
+                CleanupContentMetaDatabase          = 8,
+                ActivateContentStorage              = 9,
+                InactivateContentStorage            = 10,
+                ActivateContentMetaDatabase         = 11,
+                InactivateContentMetaDatabase       = 12,
+                InvalidateRightsIdCache             = 13,
+            };
+        public:
+            virtual Result CreateContentStorage(StorageId storage_id) = 0;
+            virtual Result CreateContentMetaDatabase(StorageId storage_id) = 0;
+            virtual Result VerifyContentStorage(StorageId storage_id) = 0;
+            virtual Result VerifyContentMetaDatabase(StorageId storage_id) = 0;
+            virtual Result OpenContentStorage(sf::Out<std::shared_ptr<IContentStorage>> out, StorageId storage_id) = 0;
+            virtual Result OpenContentMetaDatabase(sf::Out<std::shared_ptr<IContentMetaDatabase>> out, StorageId storage_id) = 0;
+            virtual Result CloseContentStorageForcibly(StorageId storage_id) = 0;
+            virtual Result CloseContentMetaDatabaseForcibly(StorageId storage_id) = 0;
+            virtual Result CleanupContentMetaDatabase(StorageId storage_id) = 0;
+            virtual Result ActivateContentStorage(StorageId storage_id) = 0;
+            virtual Result InactivateContentStorage(StorageId storage_id) = 0;
+            virtual Result ActivateContentMetaDatabase(StorageId storage_id) = 0;
+            virtual Result InactivateContentMetaDatabase(StorageId storage_id) = 0;
+            virtual Result InvalidateRightsIdCache() = 0;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(CreateContentStorage),
+                MAKE_SERVICE_COMMAND_META(CreateContentMetaDatabase),
+                MAKE_SERVICE_COMMAND_META(VerifyContentStorage),
+                MAKE_SERVICE_COMMAND_META(VerifyContentMetaDatabase),
+                MAKE_SERVICE_COMMAND_META(OpenContentStorage),
+                MAKE_SERVICE_COMMAND_META(OpenContentMetaDatabase),
+                MAKE_SERVICE_COMMAND_META(CloseContentStorageForcibly,      hos::Version_100, hos::Version_100),
+                MAKE_SERVICE_COMMAND_META(CloseContentMetaDatabaseForcibly, hos::Version_100, hos::Version_100),
+                MAKE_SERVICE_COMMAND_META(CleanupContentMetaDatabase),
+                MAKE_SERVICE_COMMAND_META(ActivateContentStorage,           hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(InactivateContentStorage,         hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(ActivateContentMetaDatabase,      hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(InactivateContentMetaDatabase,    hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(InvalidateRightsIdCache,          hos::Version_900),
+            };
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_meta_database.hpp

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/sf.hpp>
+#include <stratosphere/ncm/ncm_content_meta.hpp>
+
+namespace ams::ncm {
+
+    class IContentMetaDatabase : public sf::IServiceObject {
+        protected:
+            enum class CommandId {
+                Set                              = 0,
+                Get                              = 1,
+                Remove                           = 2,
+                GetContentIdByType               = 3,
+                ListContentInfo                  = 4,
+                List                             = 5,
+                GetLatestContentMetaKey          = 6,
+                ListApplication                  = 7,
+                Has                              = 8,
+                HasAll                           = 9,
+                GetSize                          = 10,
+                GetRequiredSystemVersion         = 11,
+                GetPatchId                       = 12,
+                DisableForcibly                  = 13,
+                LookupOrphanContent              = 14,
+                Commit                           = 15,
+                HasContent                       = 16,
+                ListContentMetaInfo              = 17,
+                GetAttributes                    = 18,
+                GetRequiredApplicationVersion    = 19,
+                GetContentIdByTypeAndIdOffset    = 20,
+            };
+        public:
+            /* Actual commands. */
+            virtual Result Set(const ContentMetaKey &key, sf::InBuffer value) = 0;
+            virtual Result Get(sf::Out<u64> out_size, const ContentMetaKey &key, sf::OutBuffer out_value) = 0;
+            virtual Result Remove(const ContentMetaKey &key) = 0;
+            virtual Result GetContentIdByType(sf::Out<ContentId> out_content_id, const ContentMetaKey &key, ContentType type) = 0;
+            virtual Result ListContentInfo(sf::Out<s32> out_entries_written, const sf::OutArray<ContentInfo> &out_info, const ContentMetaKey &key, s32 offset) = 0;
+            virtual Result List(sf::Out<s32> out_entries_total, sf::Out<s32> out_entries_written, const sf::OutArray<ContentMetaKey> &out_info, ContentMetaType meta_type, ApplicationId application_id, u64 min, u64 max, ContentInstallType install_type) = 0;
+            virtual Result GetLatestContentMetaKey(sf::Out<ContentMetaKey> out_key, u64 id) = 0;
+            virtual Result ListApplication(sf::Out<s32> out_entries_total, sf::Out<s32> out_entries_written, const sf::OutArray<ApplicationContentMetaKey> &out_keys, ContentMetaType meta_type) = 0;
+            virtual Result Has(sf::Out<bool> out, const ContentMetaKey &key) = 0;
+            virtual Result HasAll(sf::Out<bool> out, const sf::InArray<ContentMetaKey> &keys) = 0;
+            virtual Result GetSize(sf::Out<u64> out_size, const ContentMetaKey &key) = 0;
+            virtual Result GetRequiredSystemVersion(sf::Out<u32> out_version, const ContentMetaKey &key) = 0;
+            virtual Result GetPatchId(sf::Out<PatchId> out_patch_id, const ContentMetaKey &key) = 0;
+            virtual Result DisableForcibly() = 0;
+            virtual Result LookupOrphanContent(const sf::OutArray<bool> &out_orphaned, const sf::InArray<ContentId> &content_ids) = 0;
+            virtual Result Commit() = 0;
+            virtual Result HasContent(sf::Out<bool> out, const ContentMetaKey &key, const ContentId &content_id) = 0;
+            virtual Result ListContentMetaInfo(sf::Out<s32> out_entries_written, const sf::OutArray<ContentMetaInfo> &out_meta_info, const ContentMetaKey &key, s32 offset) = 0;
+            virtual Result GetAttributes(sf::Out<u8> out_attributes, const ContentMetaKey &key) = 0;
+            virtual Result GetRequiredApplicationVersion(sf::Out<u32> out_version, const ContentMetaKey &key) = 0;
+            virtual Result GetContentIdByTypeAndIdOffset(sf::Out<ContentId> out_content_id, const ContentMetaKey &key, ContentType type, u8 id_offset) = 0;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(Set),
+                MAKE_SERVICE_COMMAND_META(Get),
+                MAKE_SERVICE_COMMAND_META(Remove),
+                MAKE_SERVICE_COMMAND_META(GetContentIdByType),
+                MAKE_SERVICE_COMMAND_META(ListContentInfo),
+                MAKE_SERVICE_COMMAND_META(List),
+                MAKE_SERVICE_COMMAND_META(GetLatestContentMetaKey),
+                MAKE_SERVICE_COMMAND_META(ListApplication),
+                MAKE_SERVICE_COMMAND_META(Has),
+                MAKE_SERVICE_COMMAND_META(HasAll),
+                MAKE_SERVICE_COMMAND_META(GetSize),
+                MAKE_SERVICE_COMMAND_META(GetRequiredSystemVersion),
+                MAKE_SERVICE_COMMAND_META(GetPatchId),
+                MAKE_SERVICE_COMMAND_META(DisableForcibly),
+                MAKE_SERVICE_COMMAND_META(LookupOrphanContent),
+                MAKE_SERVICE_COMMAND_META(Commit),
+                MAKE_SERVICE_COMMAND_META(HasContent),
+                MAKE_SERVICE_COMMAND_META(ListContentMetaInfo),
+                MAKE_SERVICE_COMMAND_META(GetAttributes),
+                MAKE_SERVICE_COMMAND_META(GetRequiredApplicationVersion, hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(GetContentIdByTypeAndIdOffset, hos::Version_500),
+            };
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_storage.hpp

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/sf.hpp>
+#include <stratosphere/ncm/ncm_content_id.hpp>
+#include <stratosphere/ncm/ncm_placeholder_id.hpp>
+#include <stratosphere/ncm/ncm_path.hpp>
+#include <stratosphere/ncm/ncm_rights_id.hpp>
+
+namespace ams::ncm {
+
+    class IContentStorage : public sf::IServiceObject {
+        NON_COPYABLE(IContentStorage);
+        NON_MOVEABLE(IContentStorage);
+        protected:
+            enum class CommandId {
+                GeneratePlaceHolderId                     = 0,
+                CreatePlaceHolder                         = 1,
+                DeletePlaceHolder                         = 2,
+                HasPlaceHolder                            = 3,
+                WritePlaceHolder                          = 4,
+                Register                                  = 5,
+                Delete                                    = 6,
+                Has                                       = 7,
+                GetPath                                   = 8,
+                GetPlaceHolderPath                        = 9,
+                CleanupAllPlaceHolder                     = 10,
+                ListPlaceHolder                           = 11,
+                GetContentCount                           = 12,
+                ListContentId                             = 13,
+                GetSizeFromContentId                      = 14,
+                DisableForcibly                           = 15,
+                RevertToPlaceHolder                       = 16,
+                SetPlaceHolderSize                        = 17,
+                ReadContentIdFile                         = 18,
+                GetRightsIdFromPlaceHolderIdDeprecated    = 19,
+                GetRightsIdFromPlaceHolderId              = 19,
+                GetRightsIdFromContentIdDeprecated        = 20,
+                GetRightsIdFromContentId                  = 20,
+                WriteContentForDebug                      = 21,
+                GetFreeSpaceSize                          = 22,
+                GetTotalSpaceSize                         = 23,
+                FlushPlaceHolder                          = 24,
+                GetSizeFromPlaceHolderId                  = 25,
+                RepairInvalidFileAttribute                = 26,
+                GetRightsIdFromPlaceHolderIdWithCache     = 27,
+            };
+        public:
+            IContentStorage() { /* ... */ }
+        public:
+            virtual Result GeneratePlaceHolderId(sf::Out<PlaceHolderId> out) = 0;
+            virtual Result CreatePlaceHolder(PlaceHolderId placeholder_id, ContentId content_id, s64 size) = 0;
+            virtual Result DeletePlaceHolder(PlaceHolderId placeholder_id) = 0;
+            virtual Result HasPlaceHolder(sf::Out<bool> out, PlaceHolderId placeholder_id) = 0;
+            virtual Result WritePlaceHolder(PlaceHolderId placeholder_id, s64 offset, sf::InBuffer data) = 0;
+            virtual Result Register(PlaceHolderId placeholder_id, ContentId content_id) = 0;
+            virtual Result Delete(ContentId content_id) = 0;
+            virtual Result Has(sf::Out<bool> out, ContentId content_id) = 0;
+            virtual Result GetPath(sf::Out<Path> out, ContentId content_id) = 0;
+            virtual Result GetPlaceHolderPath(sf::Out<Path> out, PlaceHolderId placeholder_id) = 0;
+            virtual Result CleanupAllPlaceHolder() = 0;
+            virtual Result ListPlaceHolder(sf::Out<s32> out_count, const sf::OutArray<PlaceHolderId> &out_buf) = 0;
+            virtual Result GetContentCount(sf::Out<s32> out_count) = 0;
+            virtual Result ListContentId(sf::Out<s32> out_count, const sf::OutArray<ContentId> &out_buf, s32 start_offset) = 0;
+            virtual Result GetSizeFromContentId(sf::Out<s64> out_size, ContentId content_id) = 0;
+            virtual Result DisableForcibly() = 0;
+            virtual Result RevertToPlaceHolder(PlaceHolderId placeholder_id, ContentId old_content_id, ContentId new_content_id) = 0;
+            virtual Result SetPlaceHolderSize(PlaceHolderId placeholder_id, s64 size) = 0;
+            virtual Result ReadContentIdFile(sf::OutBuffer buf, ContentId content_id, s64 offset) = 0;
+            virtual Result GetRightsIdFromPlaceHolderIdDeprecated(sf::Out<ams::fs::RightsId> out_rights_id, PlaceHolderId placeholder_id) = 0;
+            virtual Result GetRightsIdFromPlaceHolderId(sf::Out<ncm::RightsId> out_rights_id, PlaceHolderId placeholder_id) = 0;
+            virtual Result GetRightsIdFromContentIdDeprecated(sf::Out<ams::fs::RightsId> out_rights_id, ContentId content_id) = 0;
+            virtual Result GetRightsIdFromContentId(sf::Out<ncm::RightsId> out_rights_id, ContentId content_id) = 0;
+            virtual Result WriteContentForDebug(ContentId content_id, s64 offset, sf::InBuffer data) = 0;
+            virtual Result GetFreeSpaceSize(sf::Out<s64> out_size) = 0;
+            virtual Result GetTotalSpaceSize(sf::Out<s64> out_size) = 0;
+            virtual Result FlushPlaceHolder() = 0;
+            virtual Result GetSizeFromPlaceHolderId(sf::Out<s64> out, PlaceHolderId placeholder_id) = 0;
+            virtual Result RepairInvalidFileAttribute() = 0;
+            virtual Result GetRightsIdFromPlaceHolderIdWithCache(sf::Out<ncm::RightsId> out_rights_id, PlaceHolderId placeholder_id, ContentId cache_content_id) = 0;
+        public:
+            DEFINE_SERVICE_DISPATCH_TABLE {
+                MAKE_SERVICE_COMMAND_META(GeneratePlaceHolderId),
+                MAKE_SERVICE_COMMAND_META(CreatePlaceHolder),
+                MAKE_SERVICE_COMMAND_META(DeletePlaceHolder),
+                MAKE_SERVICE_COMMAND_META(HasPlaceHolder),
+                MAKE_SERVICE_COMMAND_META(WritePlaceHolder),
+                MAKE_SERVICE_COMMAND_META(Register),
+                MAKE_SERVICE_COMMAND_META(Delete),
+                MAKE_SERVICE_COMMAND_META(Has),
+                MAKE_SERVICE_COMMAND_META(GetPath),
+                MAKE_SERVICE_COMMAND_META(GetPlaceHolderPath),
+                MAKE_SERVICE_COMMAND_META(CleanupAllPlaceHolder),
+                MAKE_SERVICE_COMMAND_META(ListPlaceHolder),
+                MAKE_SERVICE_COMMAND_META(GeneratePlaceHolderId),
+                MAKE_SERVICE_COMMAND_META(GetContentCount),
+                MAKE_SERVICE_COMMAND_META(ListContentId),
+                MAKE_SERVICE_COMMAND_META(GetSizeFromContentId),
+                MAKE_SERVICE_COMMAND_META(DisableForcibly),
+                MAKE_SERVICE_COMMAND_META(RevertToPlaceHolder,                       hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(SetPlaceHolderSize,                        hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(ReadContentIdFile,                         hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(GetRightsIdFromPlaceHolderIdDeprecated,    hos::Version_200, hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(GetRightsIdFromPlaceHolderId,              hos::Version_300),
+                MAKE_SERVICE_COMMAND_META(GetRightsIdFromContentIdDeprecated,        hos::Version_200, hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(GetRightsIdFromContentId,                  hos::Version_300),
+                MAKE_SERVICE_COMMAND_META(WriteContentForDebug,                      hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(GetFreeSpaceSize,                          hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(GetTotalSpaceSize,                         hos::Version_200),
+                MAKE_SERVICE_COMMAND_META(FlushPlaceHolder,                          hos::Version_300),
+                MAKE_SERVICE_COMMAND_META(GetSizeFromPlaceHolderId,                  hos::Version_400),
+                MAKE_SERVICE_COMMAND_META(RepairInvalidFileAttribute,                hos::Version_400),
+                MAKE_SERVICE_COMMAND_META(GetRightsIdFromPlaceHolderIdWithCache,     hos::Version_800),
+            };
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_ids.hpp

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_data_id.hpp>
+#include <stratosphere/ncm/ncm_program_id.hpp>
+#include <stratosphere/ncm/ncm_content_meta_id.hpp>
+#include <stratosphere/ncm/ncm_system_content_meta_id.hpp>

libraries/libstratosphere/include/stratosphere/ncm/ncm_make_path.hpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/ncm/ncm_content_id.hpp>
+#include <stratosphere/ncm/ncm_placeholder_id.hpp>
+#include <stratosphere/ncm/ncm_path_string.hpp>
+
+namespace ams::ncm {
+
+    using MakeContentPathFunction        = void (*)(PathString *out, ContentId content_id, const char *root_path);
+    using MakePlaceHolderPathFunction    = void (*)(PathString *out, PlaceHolderId placeholder_id,const char *root_path);
+
+    void MakeFlatContentFilePath(PathString *out, ContentId content_id, const char *root_path);
+    void MakeSha256HierarchicalContentFilePath_ForFat4KCluster(PathString *out, ContentId content_id, const char *root_path);
+    void MakeSha256HierarchicalContentFilePath_ForFat16KCluster(PathString *out, ContentId content_id, const char *root_path);
+    void MakeSha256HierarchicalContentFilePath_ForFat32KCluster(PathString *out, ContentId content_id, const char *root_path);
+
+    size_t GetHierarchicalContentDirectoryDepth(MakeContentPathFunction func);
+
+    void MakeFlatPlaceHolderFilePath(PathString *out, PlaceHolderId placeholder_id, const char *root_path);
+    void MakeSha256HierarchicalPlaceHolderFilePath_ForFat16KCluster(PathString *out, PlaceHolderId placeholder_id, const char *root_pathroot);
+
+    size_t GetHierarchicalPlaceHolderDirectoryDepth(MakePlaceHolderPathFunction func);
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_path.hpp

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/fs/fs_directory.hpp>
+#include <stratosphere/sf/sf_buffer_tags.hpp>
+
+namespace ams::ncm {
+
+    struct alignas(4) Path : ams::sf::LargeData {
+        char str[fs::EntryNameLengthMax];
+
+        static constexpr Path Encode(const char *p) {
+            Path path = {};
+            /* Copy C string to path, terminating when a null byte is found. */
+            for (size_t i = 0; i < sizeof(path) - 1; i++) {
+                path.str[i] = p[i];
+                if (p[i] == '\x00') {
+                    break;
+                }
+            }
+            return path;
+        }
+    };
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_path_string.hpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere/fs/fs_directory.hpp>
+#include <stratosphere/kvdb/kvdb_bounded_string.hpp>
+
+namespace ams::ncm {
+
+    using PathString = kvdb::BoundedString<fs::EntryNameLengthMax>;
+
+}

libraries/libstratosphere/include/stratosphere/ncm/ncm_placeholder_id.hpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ncm {
+
+    struct alignas(8) PlaceHolderId {
+        util::Uuid uuid;
+
+        bool operator==(const PlaceHolderId& other) const {
+            return this->uuid == other.uuid;
+        }
+
+        bool operator!=(const PlaceHolderId& other) const {
+            return this->uuid != other.uuid;
+        }
+
+        bool operator==(const util::Uuid& other) const {
+            return this->uuid == other;
+        }
+
+        bool operator!=(const util::Uuid& other) const {
+            return this->uuid != other;
+        }
+    };
+
+    static_assert(alignof(PlaceHolderId) == 8);
+
+    constexpr inline PlaceHolderId InvalidPlaceHolderId = { util::InvalidUuid };
+
+}