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fssystem: Implement PartitionFileSystemCore (#856)

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* fssystem: implement PartitionFileSystemMetaCore

* fssystem: PartitionFileSystemMetaCore cleanup

* fs: add IFile::DryWrite, update results

* fssystem: implement PartitionFileSystemCore

* fssystem: cleanup PartitionFileSystemCore

* fssystem: implement Sha256PartitionFileSystem

Co-authored-by: Michael Scire <SciresM@gmail.com>
This commit is contained in:
Adubbz
2020-03-27 21:40:52 +11:00
committed by GitHub
parent 0af2758fde
commit 3d518759da
9 changed files with 949 additions and 2 deletions
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23
libraries/libstratosphere/include/stratosphere/fs/fsa/fs_ifile.hpp
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@@ -85,7 +85,7 @@ namespace ams::fs::fsa {
protected:
Result DryRead(size_t *out, s64 offset, size_t size, const fs::ReadOption &option, OpenMode open_mode) {
/* Check that we can read. */
R_UNLESS((open_mode & OpenMode_Read) != 0, fs::ResultInvalidOperationForOpenMode());
R_UNLESS((open_mode & OpenMode_Read) != 0, fs::ResultReadNotPermitted());
/* Get the file size, and validate our offset. */
s64 file_size = 0;
@@ -98,12 +98,31 @@ namespace ams::fs::fsa {
Result DrySetSize(s64 size, fs::OpenMode open_mode) {
/* Check that we can write. */
R_UNLESS((open_mode & OpenMode_Write) != 0, fs::ResultInvalidOperationForOpenMode());
R_UNLESS((open_mode & OpenMode_Write) != 0, fs::ResultWriteNotPermitted());
AMS_ASSERT(size >= 0);
return ResultSuccess();
}
Result DryWrite(bool *out_append, s64 offset, size_t size, const fs::WriteOption &option, fs::OpenMode open_mode) {
/* Check that we can write. */
R_UNLESS((open_mode & OpenMode_Write) != 0, fs::ResultWriteNotPermitted());
/* Get the file size. */
s64 file_size = 0;
R_TRY(this->GetSize(&file_size));
/* Determine if we need to append. */
if (file_size < offset + static_cast<s64>(size)) {
R_UNLESS((open_mode & OpenMode_AllowAppend) != 0, fs::ResultFileExtensionWithoutOpenModeAllowAppend());
*out_append = true;
} else {
*out_append = false;
}
return ResultSuccess();
}
private:
virtual Result ReadImpl(size_t *out, s64 offset, void *buffer, size_t size, const fs::ReadOption &option) = 0;
virtual Result GetSizeImpl(s64 *out) = 0;