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fs: add an extension common name generator for sd card

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This commit is contained in:
Michael Scire 2020-03-31 22:31:41 -07:00
parent 07c95662b1
commit 816ce605d3
1 changed files with 30 additions and 1 deletions
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31
libraries/libstratosphere/source/fs/fs_sd_card.cpp
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@ -18,6 +18,30 @@
namespace ams::fs {
namespace {
/* NOTE: Nintendo does not attach a generator to a mounted SD card filesystem. */
/* However, it is desirable for homebrew to be able to access SD via common path. */
class SdCardCommonMountNameGenerator : public fsa::ICommonMountNameGenerator, public impl::Newable {
public:
explicit SdCardCommonMountNameGenerator() { /* ... */ }
virtual Result GenerateCommonMountName(char *dst, size_t dst_size) override {
/* Determine how much space we need. */
const size_t needed_size = strnlen(impl::SdCardFileSystemMountName, MountNameLengthMax) + 2;
AMS_ABORT_UNLESS(dst_size >= needed_size);
/* Generate the name. */
auto size = std::snprintf(dst, dst_size, "%s:", impl::SdCardFileSystemMountName);
AMS_ASSERT(static_cast<size_t>(size) == needed_size - 1);
return ResultSuccess();
}
};
}
Result MountSdCard(const char *name) {
/* Validate the mount name. */
R_TRY(impl::CheckMountName(name));
@ -30,8 +54,13 @@ namespace ams::fs {
auto fsa = std::make_unique<RemoteFileSystem>(fs);
R_UNLESS(fsa != nullptr, fs::ResultAllocationFailureInSdCardA());
/* Allocate a new mountname generator. */
/* NOTE: Nintendo does not attach a generator. */
auto generator = std::make_unique<SdCardCommonMountNameGenerator>();
R_UNLESS(generator != nullptr, fs::ResultAllocationFailureInSdCardA());
/* Register. */
return fsa::Register(name, std::move(fsa));
return fsa::Register(name, std::move(fsa), std::move(generator));
}
}