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Kernel: Add a File object and a getter for it from an Archive object.

This commit is contained in:
Emmanuel Gil Peyrot 2014-09-12 00:45:40 +02:00
parent e73caaefe5
commit 19d04f3abe
2 changed files with 118 additions and 0 deletions

View file

@ -3,9 +3,11 @@
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "common/file_util.h"
#include "common/math_util.h"
#include "core/file_sys/archive.h"
#include "core/file_sys/archive_sdmc.h"
#include "core/hle/service/service.h"
#include "core/hle/kernel/archive.h"
@ -108,6 +110,83 @@ public:
}
};
class File : public Object {
public:
std::string GetTypeName() const { return "File"; }
std::string GetName() const { return path; }
static Kernel::HandleType GetStaticHandleType() { return HandleType::File; }
Kernel::HandleType GetHandleType() const { return HandleType::File; }
std::string path; ///< Path of the file
std::unique_ptr<FileSys::File> backend; ///< File backend interface
/**
* Synchronize kernel object
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result SyncRequest(bool* wait) {
u32* cmd_buff = Service::GetCommandBuffer();
FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
switch (cmd) {
// Read from file...
case FileCommand::Read:
{
u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
u32 length = cmd_buff[3];
u32 address = cmd_buff[5];
DEBUG_LOG(KERNEL, "Read %s %s: offset=0x%x length=%d address=0x%x",
GetTypeName().c_str(), GetName().c_str(), offset, length, address);
cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
break;
}
// Write to file...
case FileCommand::Write:
{
u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
u32 length = cmd_buff[3];
u32 flush = cmd_buff[4];
u32 address = cmd_buff[6];
DEBUG_LOG(KERNEL, "Write %s %s: offset=0x%x length=%d address=0x%x, flush=0x%x",
GetTypeName().c_str(), GetName().c_str(), offset, length, address, flush);
cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
break;
}
case FileCommand::GetSize:
{
DEBUG_LOG(KERNEL, "GetSize %s %s", GetTypeName().c_str(), GetName().c_str());
u64 size = backend->GetSize();
cmd_buff[2] = (u32)size;
cmd_buff[3] = size >> 32;
break;
}
// Unknown command...
default:
ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
cmd_buff[1] = -1; // TODO(Link Mauve): use the correct error code for that.
return -1;
}
cmd_buff[1] = 0; // No error
return 0;
}
/**
* Wait for kernel object to synchronize
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result WaitSynchronization(bool* wait) {
// TODO(bunnei): ImplementMe
ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
return 0;
}
};
////////////////////////////////////////////////////////////////////////////////////////////////////
std::map<FileSys::Archive::IdCode, Handle> g_archive_map; ///< Map of file archives by IdCode
@ -171,9 +250,39 @@ Handle CreateArchive(FileSys::Archive* backend, const std::string& name) {
return handle;
}
/**
* Open a File from an Archive
* @param archive_handle Handle to an open Archive object
* @param path Path to the File inside of the Archive
* @param mode Mode under which to open the File
* @return Opened File object
*/
Handle OpenFileFromArchive(Handle archive_handle, const std::string& path, const FileSys::Mode mode) {
File* file = new File;
Handle handle = Kernel::g_object_pool.Create(file);
Archive* archive = Kernel::g_object_pool.GetFast<Archive>(archive_handle);
file->path = path;
file->backend = archive->backend->OpenFile(path, mode);
return handle;
}
/// Initialize archives
void ArchiveInit() {
g_archive_map.clear();
// TODO(Link Mauve): Add the other archive types (see here for the known types:
// http://3dbrew.org/wiki/FS:OpenArchive#Archive_idcodes). Currently the only half-finished
// archive type is SDMC, so it is the only one getting exposed.
// TODO(Link Mauve): don't assume the path separator is '/'.
std::string sdmc_directory = FileUtil::GetCurrentDir() + "/userdata/sdmc";
auto archive = new FileSys::Archive_SDMC(sdmc_directory);
if (archive->Initialize())
CreateArchive(archive, "SDMC");
else
ERROR_LOG(KERNEL, "Can't instantiate SDMC archive with path %s", sdmc_directory.c_str());
}
/// Shutdown archives

View file

@ -29,6 +29,15 @@ Handle OpenArchive(FileSys::Archive::IdCode id_code);
*/
Handle CreateArchive(FileSys::Archive* backend, const std::string& name);
/**
* Open a File from an Archive
* @param archive_handle Handle to an open Archive object
* @param path Path to the File inside of the Archive
* @param mode Mode under which to open the File
* @return Opened File object
*/
Handle OpenFileFromArchive(Handle handle, const std::string& name, const FileSys::Mode mode);
/// Initialize archives
void ArchiveInit();