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HLE/FS: Return the proper error codes on file Read/Write operations.
These operations are limited by the open flags specified while opening the file.
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parent
09b0564c75
commit
96f0e32f83
@ -124,17 +124,23 @@ bool DiskFile::Open() {
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return file->IsOpen();
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}
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size_t DiskFile::Read(const u64 offset, const size_t length, u8* buffer) const {
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ResultVal<size_t> DiskFile::Read(const u64 offset, const size_t length, u8* buffer) const {
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if (!mode.read_flag && !mode.write_flag)
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return ResultCode(ErrorDescription::FS_InvalidOpenFlags, ErrorModule::FS, ErrorSummary::Canceled, ErrorLevel::Status);
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file->Seek(offset, SEEK_SET);
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return file->ReadBytes(buffer, length);
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return MakeResult<size_t>(file->ReadBytes(buffer, length));
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}
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size_t DiskFile::Write(const u64 offset, const size_t length, const bool flush, const u8* buffer) const {
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ResultVal<size_t> DiskFile::Write(const u64 offset, const size_t length, const bool flush, const u8* buffer) const {
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if (!mode.write_flag)
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return ResultCode(ErrorDescription::FS_InvalidOpenFlags, ErrorModule::FS, ErrorSummary::Canceled, ErrorLevel::Status);
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file->Seek(offset, SEEK_SET);
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size_t written = file->WriteBytes(buffer, length);
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if (flush)
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file->Flush();
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return written;
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return MakeResult<size_t>(written);
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}
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u64 DiskFile::GetSize() const {
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@ -55,8 +55,8 @@ public:
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DiskFile(const DiskArchive& archive, const Path& path, const Mode mode);
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bool Open() override;
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size_t Read(u64 offset, size_t length, u8* buffer) const override;
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size_t Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
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ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const override;
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ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
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u64 GetSize() const override;
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bool SetSize(u64 size) const override;
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bool Close() const override;
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@ -7,6 +7,7 @@
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#include <cstddef>
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#include "common/common_types.h"
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#include "core/hle/result.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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@ -29,9 +30,9 @@ public:
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* @param offset Offset in bytes to start reading data from
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* @param length Length in bytes of data to read from file
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* @param buffer Buffer to read data into
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* @return Number of bytes read
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* @return Number of bytes read, or error code
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*/
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virtual size_t Read(u64 offset, size_t length, u8* buffer) const = 0;
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virtual ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const = 0;
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/**
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* Write data to the file
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@ -39,9 +40,9 @@ public:
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* @param length Length in bytes of data to write to file
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* @param flush The flush parameters (0 == do not flush)
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* @param buffer Buffer to read data from
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* @return Number of bytes written
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* @return Number of bytes written, or error code
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*/
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virtual size_t Write(u64 offset, size_t length, bool flush, const u8* buffer) const = 0;
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virtual ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const = 0;
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/**
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* Get the size of the file in bytes
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@ -68,17 +68,18 @@ u64 IVFCArchive::GetFreeBytes() const {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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size_t IVFCFile::Read(const u64 offset, const size_t length, u8* buffer) const {
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ResultVal<size_t> IVFCFile::Read(const u64 offset, const size_t length, u8* buffer) const {
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LOG_TRACE(Service_FS, "called offset=%llu, length=%zu", offset, length);
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romfs_file->Seek(data_offset + offset, SEEK_SET);
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size_t read_length = (size_t)std::min((u64)length, data_size - offset);
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return romfs_file->ReadBytes(buffer, read_length);
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return MakeResult<size_t>(romfs_file->ReadBytes(buffer, read_length));
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}
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size_t IVFCFile::Write(const u64 offset, const size_t length, const bool flush, const u8* buffer) const {
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ResultVal<size_t> IVFCFile::Write(const u64 offset, const size_t length, const bool flush, const u8* buffer) const {
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LOG_ERROR(Service_FS, "Attempted to write to IVFC file");
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return 0;
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// TODO(Subv): Find error code
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return MakeResult<size_t>(0);
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}
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u64 IVFCFile::GetSize() const {
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@ -56,8 +56,8 @@ public:
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: romfs_file(file), data_offset(offset), data_size(size) {}
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bool Open() override { return true; }
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size_t Read(u64 offset, size_t length, u8* buffer) const override;
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size_t Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
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ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const override;
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ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
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u64 GetSize() const override;
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bool SetSize(u64 size) const override;
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bool Close() const override { return false; }
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@ -21,6 +21,7 @@ enum class ErrorDescription : u32 {
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WrongAddress = 53,
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FS_NotFound = 120,
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FS_AlreadyExists = 190,
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FS_InvalidOpenFlags = 230,
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FS_NotAFile = 250,
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FS_NotFormatted = 340, ///< This is used by the FS service when creating a SaveData archive
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InvalidSection = 1000,
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@ -103,7 +103,14 @@ ResultVal<bool> File::SyncRequest() {
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u32 address = cmd_buff[5];
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LOG_TRACE(Service_FS, "Read %s %s: offset=0x%llx length=%d address=0x%x",
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GetTypeName().c_str(), GetName().c_str(), offset, length, address);
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cmd_buff[2] = static_cast<u32>(backend->Read(offset, length, Memory::GetPointer(address)));
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if (offset + length > backend->GetSize())
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LOG_ERROR(Service_FS, "Reading from out of bounds offset=0x%llX length=0x%08X file_size=0x%llX", offset, length, backend->GetSize());
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ResultVal<size_t> read = backend->Read(offset, length, Memory::GetPointer(address));
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if (read.Failed()) {
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cmd_buff[1] = read.Code().raw;
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return read.Code();
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}
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cmd_buff[2] = static_cast<u32>(read.MoveFrom());
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break;
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}
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@ -116,7 +123,13 @@ ResultVal<bool> File::SyncRequest() {
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u32 address = cmd_buff[6];
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LOG_TRACE(Service_FS, "Write %s %s: offset=0x%llx length=%d address=0x%x, flush=0x%x",
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GetTypeName().c_str(), GetName().c_str(), offset, length, address, flush);
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cmd_buff[2] = static_cast<u32>(backend->Write(offset, length, flush != 0, Memory::GetPointer(address)));
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ResultVal<size_t> written = backend->Write(offset, length, flush != 0, Memory::GetPointer(address));
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if (written.Failed()) {
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cmd_buff[1] = written.Code().raw;
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return written.Code();
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}
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cmd_buff[2] = static_cast<u32>(written.MoveFrom());
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break;
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}
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