mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-24 14:00:03 +00:00
478 lines
11 KiB
C++
478 lines
11 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, version 2.0 or later versions.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official git repository and contact information can be found at
|
|
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
|
|
|
|
#include <set>
|
|
#include "Common/StringUtils.h"
|
|
#include "Core/FileSystems/MetaFileSystem.h"
|
|
#include "Core/HLE/sceKernelThread.h"
|
|
#include "Core/Reporting.h"
|
|
|
|
static bool ApplyPathStringToComponentsVector(std::vector<std::string> &vector, const std::string &pathString)
|
|
{
|
|
size_t len = pathString.length();
|
|
size_t start = 0;
|
|
|
|
while (start < len)
|
|
{
|
|
size_t i = pathString.find('/', start);
|
|
if (i == std::string::npos)
|
|
i = len;
|
|
|
|
if (i > start)
|
|
{
|
|
std::string component = pathString.substr(start, i - start);
|
|
if (component != ".")
|
|
{
|
|
if (component == "..")
|
|
{
|
|
if (vector.size() != 0)
|
|
{
|
|
vector.pop_back();
|
|
}
|
|
else
|
|
{
|
|
// The PSP silently ignores attempts to .. to parent of root directory
|
|
WARN_LOG(HLE, "RealPath: ignoring .. beyond root - root directory is its own parent: \"%s\"", pathString.c_str());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
vector.push_back(component);
|
|
}
|
|
}
|
|
}
|
|
|
|
start = i + 1;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Changes relative paths to absolute, removes ".", "..", and trailing "/"
|
|
* "drive:./blah" is absolute (ignore the dot) and "/blah" is relative (because it's missing "drive:")
|
|
* babel (and possibly other games) use "/directoryThatDoesNotExist/../directoryThatExists/filename"
|
|
*/
|
|
static bool RealPath(const std::string ¤tDirectory, const std::string &inPath, std::string &outPath)
|
|
{
|
|
size_t inLen = inPath.length();
|
|
if (inLen == 0)
|
|
{
|
|
WARN_LOG(HLE, "RealPath: inPath is empty");
|
|
outPath = currentDirectory;
|
|
return true;
|
|
}
|
|
|
|
size_t inColon = inPath.find(':');
|
|
if (inColon + 1 == inLen)
|
|
{
|
|
WARN_LOG(HLE, "RealPath: inPath is all prefix and no path: \"%s\"", inPath.c_str());
|
|
|
|
outPath = inPath;
|
|
return true;
|
|
}
|
|
|
|
bool relative = (inColon == std::string::npos);
|
|
|
|
std::string prefix, inAfterColon;
|
|
std::vector<std::string> cmpnts; // path components
|
|
size_t outPathCapacityGuess = inPath.length();
|
|
|
|
if (relative)
|
|
{
|
|
size_t curDirLen = currentDirectory.length();
|
|
if (curDirLen == 0)
|
|
{
|
|
ERROR_LOG(HLE, "RealPath: inPath \"%s\" is relative, but current directory is empty", inPath.c_str());
|
|
return false;
|
|
}
|
|
|
|
size_t curDirColon = currentDirectory.find(':');
|
|
if (curDirColon == std::string::npos)
|
|
{
|
|
ERROR_LOG(HLE, "RealPath: inPath \"%s\" is relative, but current directory \"%s\" has no prefix", inPath.c_str(), currentDirectory.c_str());
|
|
return false;
|
|
}
|
|
if (curDirColon + 1 == curDirLen)
|
|
{
|
|
ERROR_LOG(HLE, "RealPath: inPath \"%s\" is relative, but current directory \"%s\" is all prefix and no path. Using \"/\" as path for current directory.", inPath.c_str(), currentDirectory.c_str());
|
|
}
|
|
else
|
|
{
|
|
const std::string curDirAfter = currentDirectory.substr(curDirColon + 1);
|
|
if (! ApplyPathStringToComponentsVector(cmpnts, curDirAfter) )
|
|
{
|
|
ERROR_LOG(HLE,"RealPath: currentDirectory is not a valid path: \"%s\"", currentDirectory.c_str());
|
|
return false;
|
|
}
|
|
|
|
outPathCapacityGuess += curDirLen;
|
|
}
|
|
|
|
prefix = currentDirectory.substr(0, curDirColon + 1);
|
|
inAfterColon = inPath;
|
|
}
|
|
else
|
|
{
|
|
prefix = inPath.substr(0, inColon + 1);
|
|
inAfterColon = inPath.substr(inColon + 1);
|
|
}
|
|
|
|
// Special case: "disc0:" is different from "disc0:/", so keep track of the single slash.
|
|
if (inAfterColon == "/")
|
|
{
|
|
outPath = prefix + inAfterColon;
|
|
return true;
|
|
}
|
|
|
|
if (! ApplyPathStringToComponentsVector(cmpnts, inAfterColon) )
|
|
{
|
|
WARN_LOG(HLE, "RealPath: inPath is not a valid path: \"%s\"", inPath.c_str());
|
|
return false;
|
|
}
|
|
|
|
outPath.clear();
|
|
outPath.reserve(outPathCapacityGuess);
|
|
|
|
outPath.append(prefix);
|
|
|
|
size_t numCmpnts = cmpnts.size();
|
|
for (size_t i = 0; i < numCmpnts; i++)
|
|
{
|
|
outPath.append(1, '/');
|
|
outPath.append(cmpnts[i]);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
IFileSystem *MetaFileSystem::GetHandleOwner(u32 handle)
|
|
{
|
|
for (size_t i = 0; i < fileSystems.size(); i++)
|
|
{
|
|
if (fileSystems[i].system->OwnsHandle(handle))
|
|
return fileSystems[i].system; //got it!
|
|
}
|
|
//none found?
|
|
return 0;
|
|
}
|
|
|
|
extern u32 ioErrorCode;
|
|
bool MetaFileSystem::MapFilePath(const std::string &_inpath, std::string &outpath, MountPoint **system)
|
|
{
|
|
std::string realpath;
|
|
|
|
// Special handling: host0:command.txt (as seen in Super Monkey Ball Adventures, for example)
|
|
// appears to mean the current directory on the UMD. Let's just assume the current directory.
|
|
std::string inpath = _inpath;
|
|
if (strncasecmp(inpath.c_str(), "host0:", strlen("host0:")) == 0) {
|
|
INFO_LOG(HLE, "Host0 path detected, stripping: %s", inpath.c_str());
|
|
inpath = inpath.substr(strlen("host0:"));
|
|
}
|
|
|
|
const std::string *currentDirectory = &startingDirectory;
|
|
|
|
int currentThread = __KernelGetCurThread();
|
|
currentDir_t::iterator it = currentDir.find(currentThread);
|
|
if (it == currentDir.end())
|
|
{
|
|
//Attempt to emulate SCE_KERNEL_ERROR_NOCWD / 8002032C: may break things requiring fixes elsewhere
|
|
if (inpath.find(':') == std::string::npos /* means path is relative */)
|
|
{
|
|
ioErrorCode = SCE_KERNEL_ERROR_NOCWD;
|
|
WARN_LOG_REPORT(HLE, "Path is relative, but current directory not set for thread %i. returning 8002032C(SCE_KERNEL_ERROR_NOCWD) instead.", currentThread);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
currentDirectory = &(it->second);
|
|
}
|
|
|
|
if ( RealPath(*currentDirectory, inpath, realpath) )
|
|
{
|
|
for (size_t i = 0; i < fileSystems.size(); i++)
|
|
{
|
|
size_t prefLen = fileSystems[i].prefix.size();
|
|
if (strncasecmp(fileSystems[i].prefix.c_str(), realpath.c_str(), prefLen) == 0)
|
|
{
|
|
outpath = realpath.substr(prefLen);
|
|
*system = &(fileSystems[i]);
|
|
|
|
VERBOSE_LOG(HLE, "MapFilePath: mapped \"%s\" to prefix: \"%s\", path: \"%s\"", inpath.c_str(), fileSystems[i].prefix.c_str(), outpath.c_str());
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
DEBUG_LOG(HLE, "MapFilePath: failed mapping \"%s\", returning false", inpath.c_str());
|
|
return false;
|
|
}
|
|
|
|
void MetaFileSystem::Mount(std::string prefix, IFileSystem *system)
|
|
{
|
|
MountPoint x;
|
|
x.prefix=prefix;
|
|
x.system=system;
|
|
fileSystems.push_back(x);
|
|
}
|
|
|
|
void MetaFileSystem::Shutdown()
|
|
{
|
|
current = 6;
|
|
|
|
// Ownership is a bit convoluted. Let's just delete everything once.
|
|
|
|
std::set<IFileSystem *> toDelete;
|
|
for (size_t i = 0; i < fileSystems.size(); i++) {
|
|
toDelete.insert(fileSystems[i].system);
|
|
}
|
|
|
|
for (auto iter = toDelete.begin(); iter != toDelete.end(); ++iter)
|
|
{
|
|
delete *iter;
|
|
}
|
|
|
|
fileSystems.clear();
|
|
currentDir.clear();
|
|
startingDirectory = "";
|
|
}
|
|
|
|
u32 MetaFileSystem::OpenFile(std::string filename, FileAccess access, const char *devicename)
|
|
{
|
|
std::string of;
|
|
MountPoint *mount;
|
|
if (MapFilePath(filename, of, &mount))
|
|
{
|
|
return mount->system->OpenFile(of, access, mount->prefix.c_str());
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
PSPFileInfo MetaFileSystem::GetFileInfo(std::string filename)
|
|
{
|
|
std::string of;
|
|
IFileSystem *system;
|
|
if (MapFilePath(filename, of, &system))
|
|
{
|
|
return system->GetFileInfo(of);
|
|
}
|
|
else
|
|
{
|
|
PSPFileInfo bogus; // TODO
|
|
return bogus;
|
|
}
|
|
}
|
|
|
|
bool MetaFileSystem::GetHostPath(const std::string &inpath, std::string &outpath)
|
|
{
|
|
std::string of;
|
|
IFileSystem *system;
|
|
if (MapFilePath(inpath, of, &system)) {
|
|
return system->GetHostPath(of, outpath);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
std::vector<PSPFileInfo> MetaFileSystem::GetDirListing(std::string path)
|
|
{
|
|
std::string of;
|
|
IFileSystem *system;
|
|
if (MapFilePath(path, of, &system))
|
|
{
|
|
return system->GetDirListing(of);
|
|
}
|
|
else
|
|
{
|
|
std::vector<PSPFileInfo> empty;
|
|
return empty;
|
|
}
|
|
}
|
|
|
|
void MetaFileSystem::ThreadEnded(int threadID)
|
|
{
|
|
currentDir.erase(threadID);
|
|
}
|
|
|
|
int MetaFileSystem::ChDir(const std::string &dir)
|
|
{
|
|
// Retain the old path and fail if the arg is 1023 bytes or longer.
|
|
if (dir.size() >= 1023)
|
|
return SCE_KERNEL_ERROR_NAMETOOLONG;
|
|
|
|
int curThread = __KernelGetCurThread();
|
|
|
|
std::string of;
|
|
MountPoint *mountPoint;
|
|
if (MapFilePath(dir, of, &mountPoint))
|
|
{
|
|
currentDir[curThread] = mountPoint->prefix + of;
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
for (size_t i = 0; i < fileSystems.size(); i++)
|
|
{
|
|
const std::string &prefix = fileSystems[i].prefix;
|
|
if (strncasecmp(prefix.c_str(), dir.c_str(), prefix.size()) == 0)
|
|
{
|
|
// The PSP is completely happy with invalid current dirs as long as they have a valid device.
|
|
WARN_LOG(HLE, "ChDir failed to map path \"%s\", saving as current directory anyway", dir.c_str());
|
|
currentDir[curThread] = dir;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
WARN_LOG_REPORT(HLE, "ChDir failed to map device for \"%s\", failing", dir.c_str());
|
|
return SCE_KERNEL_ERROR_NODEV;
|
|
}
|
|
}
|
|
|
|
bool MetaFileSystem::MkDir(const std::string &dirname)
|
|
{
|
|
std::string of;
|
|
IFileSystem *system;
|
|
if (MapFilePath(dirname, of, &system))
|
|
{
|
|
return system->MkDir(of);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool MetaFileSystem::RmDir(const std::string &dirname)
|
|
{
|
|
std::string of;
|
|
IFileSystem *system;
|
|
if (MapFilePath(dirname, of, &system))
|
|
{
|
|
return system->RmDir(of);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
int MetaFileSystem::RenameFile(const std::string &from, const std::string &to)
|
|
{
|
|
std::string of;
|
|
std::string rf;
|
|
IFileSystem *osystem;
|
|
IFileSystem *rsystem = NULL;
|
|
if (MapFilePath(from, of, &osystem))
|
|
{
|
|
// If it's a relative path, it seems to always use from's filesystem.
|
|
if (to.find(":/") != to.npos)
|
|
{
|
|
if (!MapFilePath(to, rf, &rsystem))
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
rf = to;
|
|
rsystem = osystem;
|
|
}
|
|
|
|
if (osystem != rsystem)
|
|
return SCE_KERNEL_ERROR_XDEV;
|
|
|
|
return osystem->RenameFile(of, rf);
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
bool MetaFileSystem::RemoveFile(const std::string &filename)
|
|
{
|
|
std::string of;
|
|
IFileSystem *system;
|
|
if (MapFilePath(filename, of, &system))
|
|
{
|
|
return system->RemoveFile(of);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void MetaFileSystem::CloseFile(u32 handle)
|
|
{
|
|
IFileSystem *sys = GetHandleOwner(handle);
|
|
if (sys)
|
|
sys->CloseFile(handle);
|
|
}
|
|
|
|
size_t MetaFileSystem::ReadFile(u32 handle, u8 *pointer, s64 size)
|
|
{
|
|
IFileSystem *sys = GetHandleOwner(handle);
|
|
if (sys)
|
|
return sys->ReadFile(handle,pointer,size);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
size_t MetaFileSystem::WriteFile(u32 handle, const u8 *pointer, s64 size)
|
|
{
|
|
IFileSystem *sys = GetHandleOwner(handle);
|
|
if (sys)
|
|
return sys->WriteFile(handle,pointer,size);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
size_t MetaFileSystem::SeekFile(u32 handle, s32 position, FileMove type)
|
|
{
|
|
IFileSystem *sys = GetHandleOwner(handle);
|
|
if (sys)
|
|
return sys->SeekFile(handle,position,type);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
void MetaFileSystem::DoState(PointerWrap &p)
|
|
{
|
|
p.Do(current);
|
|
|
|
// Save/load per-thread current directory map
|
|
p.Do(currentDir);
|
|
|
|
u32 n = (u32) fileSystems.size();
|
|
p.Do(n);
|
|
if (n != (u32) fileSystems.size())
|
|
{
|
|
p.SetError(p.ERROR_FAILURE);
|
|
ERROR_LOG(FILESYS, "Savestate failure: number of filesystems doesn't match.");
|
|
return;
|
|
}
|
|
|
|
for (u32 i = 0; i < n; ++i)
|
|
fileSystems[i].system->DoState(p);
|
|
|
|
p.DoMarker("MetaFileSystem");
|
|
}
|
|
|