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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <sys/stat.h>
#include "common/common_types.h"
#include "common/file_util.h"
#include "core/file_sys/file_sdmc.h"
#include "core/file_sys/archive_sdmc.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
File_SDMC::File_SDMC(const Archive_SDMC* archive, const Path& path, const Mode mode) {
// TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass
// the root directory we set while opening the archive.
// For example, opening /../../etc/passwd can give the emulated program your users list.
this->path = archive->GetMountPoint() + path.AsString();
this->mode.hex = mode.hex;
}
File_SDMC::~File_SDMC() {
Close();
}
/**
* Open the file
* @return true if the file opened correctly
*/
bool File_SDMC::Open() {
if (!mode.create_flag && !FileUtil::Exists(path)) {
ERROR_LOG(FILESYS, "Non-existing file %s can’t be open without mode create.", path.c_str());
return false;
}
std::string mode_string;
if (mode.create_flag)
mode_string = "w+";
else if (mode.write_flag)
mode_string = "r+"; // Files opened with Write access can be read from
else if (mode.read_flag)
mode_string = "r";
// Open the file in binary mode, to avoid problems with CR/LF on Windows systems
mode_string += "b";
file = new FileUtil::IOFile(path, mode_string.c_str());
return true;
}
/**
* Read data from the file
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from file
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
size_t File_SDMC::Read(const u64 offset, const u32 length, u8* buffer) const {
file->Seek(offset, SEEK_SET);
return file->ReadBytes(buffer, length);
}
/**
* Write data to the file
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to file
* @param flush The flush parameters (0 == do not flush)
* @param buffer Buffer to read data from
* @return Number of bytes written
*/
size_t File_SDMC::Write(const u64 offset, const u32 length, const u32 flush, const u8* buffer) const {
file->Seek(offset, SEEK_SET);
size_t written = file->WriteBytes(buffer, length);
if (flush)
file->Flush();
return written;
}
/**
* Get the size of the file in bytes
* @return Size of the file in bytes
*/
size_t File_SDMC::GetSize() const {
return static_cast<size_t>(file->GetSize());
}
/**
* Set the size of the file in bytes
* @param size New size of the file
* @return true if successful
*/
bool File_SDMC::SetSize(const u64 size) const {
file->Resize(size);
file->Flush();
return true;
}
/**
* Close the file
* @return true if the file closed correctly
*/
bool File_SDMC::Close() const {
return file->Close();
}
} // namespace FileSys
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