shadPS4/src/core/libraries/kernel/file_system.cpp

498 lines
17 KiB
C++

// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "common/singleton.h"
#include "core/file_sys/fs.h"
#include "core/libraries/error_codes.h"
#include "core/libraries/kernel/file_system.h"
#include "core/libraries/libs.h"
#include "libkernel.h"
namespace Libraries::Kernel {
std::vector<Core::FileSys::DirEntry> GetDirectoryEntries(const std::string& path) {
std::vector<Core::FileSys::DirEntry> files;
for (const auto& entry : std::filesystem::directory_iterator(path)) {
auto& dir_entry = files.emplace_back();
dir_entry.name = entry.path().filename().string();
dir_entry.isFile = !std::filesystem::is_directory(entry.path().string());
}
return files;
}
int PS4_SYSV_ABI sceKernelOpen(const char* path, int flags, u16 mode) {
LOG_INFO(Kernel_Fs, "path = {} flags = {:#x} mode = {}", path, flags, mode);
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
bool read = (flags & 0x3) == ORBIS_KERNEL_O_RDONLY;
bool write = (flags & 0x3) == ORBIS_KERNEL_O_WRONLY;
bool rdwr = (flags & 0x3) == ORBIS_KERNEL_O_RDWR;
bool nonblock = (flags & ORBIS_KERNEL_O_NONBLOCK) != 0;
bool append = (flags & ORBIS_KERNEL_O_APPEND) != 0;
bool fsync = (flags & ORBIS_KERNEL_O_FSYNC) != 0;
bool sync = (flags & ORBIS_KERNEL_O_SYNC) != 0;
bool create = (flags & ORBIS_KERNEL_O_CREAT) != 0;
bool truncate = (flags & ORBIS_KERNEL_O_TRUNC) != 0;
bool excl = (flags & ORBIS_KERNEL_O_EXCL) != 0;
bool dsync = (flags & ORBIS_KERNEL_O_DSYNC) != 0;
bool direct = (flags & ORBIS_KERNEL_O_DIRECT) != 0;
bool directory = (flags & ORBIS_KERNEL_O_DIRECTORY) != 0;
if (std::string_view{path} == "/dev/console") {
return 2000;
}
if (std::string_view{path} == "/dev/deci_tty6") {
return 2001;
}
if (std::string_view{path} == "/dev/stdout") {
return 2002;
}
u32 handle = h->CreateHandle();
auto* file = h->GetFile(handle);
if (directory) {
file->is_directory = true;
file->m_guest_name = path;
file->m_host_name = mnt->GetHostDirectory(file->m_guest_name);
if (!std::filesystem::is_directory(file->m_host_name)) { // directory doesn't exist
h->DeleteHandle(handle);
return ORBIS_KERNEL_ERROR_ENOTDIR;
} else {
if (create) {
return handle; // dir already exists
} else {
file->dirents = GetDirectoryEntries(file->m_host_name);
file->dirents_index = 0;
}
}
} else {
file->m_guest_name = path;
file->m_host_name = mnt->GetHostFile(file->m_guest_name);
int e = 0;
if (read) {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Read);
} else if (write && (create || truncate)) {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Write);
} else if (write && create && append) { // CUSA04729 (appends app0/shaderlist.txt)
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Append);
} else if (rdwr) {
if (create) { // Create an empty file first.
Common::FS::IOFile out(file->m_host_name, Common::FS::FileAccessMode::Write);
}
// RW, then scekernelWrite is called and savedata is written just fine now.
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::ReadWrite);
} else {
UNREACHABLE();
}
if (e != 0) {
h->DeleteHandle(handle);
return ErrnoToSceKernelError(e);
}
}
file->is_opened = true;
return handle;
}
int PS4_SYSV_ABI posix_open(const char* path, int flags, /* SceKernelMode*/ u16 mode) {
LOG_INFO(Kernel_Fs, "posix open redirect to sceKernelOpen");
int result = sceKernelOpen(path, flags, mode);
// Posix calls different only for their return values
if (result < 0) {
ErrSceToPosix(result);
return -1;
}
return result;
}
int PS4_SYSV_ABI sceKernelClose(int d) {
if (d < 3) { // d probably hold an error code
return ORBIS_KERNEL_ERROR_EPERM;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
return SCE_KERNEL_ERROR_EBADF;
}
if (!file->is_directory) {
file->f.Close();
}
file->is_opened = false;
LOG_INFO(Kernel_Fs, "Closing {}", file->m_guest_name);
h->DeleteHandle(d);
return SCE_OK;
}
int PS4_SYSV_ABI posix_close(int d) {
int result = sceKernelClose(d);
if (result < 0) {
LOG_ERROR(Kernel_Pthread, "posix_close: error = {}", result);
ErrSceToPosix(result);
return -1;
}
return result;
return ORBIS_OK;
}
size_t PS4_SYSV_ABI sceKernelWrite(int d, const void* buf, size_t nbytes) {
if (d <= 2) { // stdin,stdout,stderr
char* str = strdup((const char*)buf);
if (str[nbytes - 1] == '\n')
str[nbytes - 1] = 0;
LOG_INFO(Tty, "{}", str);
free(str);
return nbytes;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
return SCE_KERNEL_ERROR_EBADF;
}
std::scoped_lock lk{file->m_mutex};
return file->f.WriteRaw<u8>(buf, nbytes);
}
int PS4_SYSV_ABI sceKernelUnlink(const char* path) {
if (path == nullptr) {
return SCE_KERNEL_ERROR_EINVAL;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
std::string host_path = mnt->GetHostFile(path);
if (host_path.empty()) {
return SCE_KERNEL_ERROR_EACCES;
}
if (std::filesystem::is_directory(host_path)) {
return SCE_KERNEL_ERROR_EPERM;
}
auto* file = h->getFile(host_path);
if (file != nullptr) {
file->f.Unlink();
}
LOG_INFO(Kernel_Fs, "Unlinked {}", path);
return SCE_OK;
}
size_t PS4_SYSV_ABI _readv(int d, const SceKernelIovec* iov, int iovcnt) {
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
size_t total_read = 0;
std::scoped_lock lk{file->m_mutex};
for (int i = 0; i < iovcnt; i++) {
total_read += file->f.ReadRaw<u8>(iov[i].iov_base, iov[i].iov_len);
}
return total_read;
}
s64 PS4_SYSV_ABI sceKernelLseek(int d, s64 offset, int whence) {
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
Common::FS::SeekOrigin origin{};
if (whence == 0) {
origin = Common::FS::SeekOrigin::SetOrigin;
} else if (whence == 1) {
origin = Common::FS::SeekOrigin::CurrentPosition;
} else if (whence == 2) {
origin = Common::FS::SeekOrigin::End;
}
std::scoped_lock lk{file->m_mutex};
file->f.Seek(offset, origin);
return file->f.Tell();
}
s64 PS4_SYSV_ABI posix_lseek(int d, s64 offset, int whence) {
int result = sceKernelLseek(d, offset, whence);
if (result < 0) {
LOG_ERROR(Kernel_Pthread, "posix_lseek: error = {}", result);
ErrSceToPosix(result);
return -1;
}
return result;
}
s64 PS4_SYSV_ABI sceKernelRead(int d, void* buf, size_t nbytes) {
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
return SCE_KERNEL_ERROR_EBADF;
}
std::scoped_lock lk{file->m_mutex};
return file->f.ReadRaw<u8>(buf, nbytes);
}
int PS4_SYSV_ABI posix_read(int d, void* buf, size_t nbytes) {
int result = sceKernelRead(d, buf, nbytes);
if (result < 0) {
LOG_ERROR(Kernel_Pthread, "posix_read: error = {}", result);
ErrSceToPosix(result);
return -1;
}
return result;
}
int PS4_SYSV_ABI sceKernelMkdir(const char* path, u16 mode) {
LOG_INFO(Kernel_Fs, "path = {} mode = {}", path, mode);
if (path == nullptr) {
return SCE_KERNEL_ERROR_EINVAL;
}
auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
std::string dir_name = mnt->GetHostFile(path);
if (std::filesystem::exists(dir_name)) {
return SCE_KERNEL_ERROR_EEXIST;
}
// CUSA02456: path = /aotl after sceSaveDataMount(mode = 1)
if (dir_name.empty() || !std::filesystem::create_directory(dir_name)) {
return SCE_KERNEL_ERROR_EIO;
}
if (!std::filesystem::exists(dir_name)) {
return SCE_KERNEL_ERROR_ENOENT;
}
return ORBIS_OK;
}
int PS4_SYSV_ABI posix_mkdir(const char* path, u16 mode) {
int result = sceKernelMkdir(path, mode);
if (result < 0) {
LOG_ERROR(Kernel_Pthread, "posix_mkdir: error = {}", result);
ErrSceToPosix(result);
return -1;
}
return result;
}
int PS4_SYSV_ABI sceKernelStat(const char* path, OrbisKernelStat* sb) {
LOG_INFO(Kernel_Fs, "(PARTIAL) path = {}", path);
auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
const auto& path_name = mnt->GetHostFile(path);
std::memset(sb, 0, sizeof(OrbisKernelStat));
const bool is_dir = std::filesystem::is_directory(path_name);
const bool is_file = std::filesystem::is_regular_file(path_name);
if (!is_dir && !is_file) {
return ORBIS_KERNEL_ERROR_ENOENT;
}
if (std::filesystem::is_directory(path_name)) {
sb->st_mode = 0000777u | 0040000u;
sb->st_size = 0;
sb->st_blksize = 512;
sb->st_blocks = 0;
// TODO incomplete
} else {
sb->st_mode = 0000777u | 0100000u;
sb->st_size = static_cast<int64_t>(std::filesystem::file_size(path_name));
sb->st_blksize = 512;
sb->st_blocks = (sb->st_size + 511) / 512;
// TODO incomplete
}
return ORBIS_OK;
}
int PS4_SYSV_ABI posix_stat(const char* path, OrbisKernelStat* sb) {
int result = sceKernelStat(path, sb);
if (result < 0) {
LOG_ERROR(Kernel_Pthread, "posix_stat: error = {}", result);
ErrSceToPosix(result);
return -1;
}
return result;
}
int PS4_SYSV_ABI sceKernelCheckReachability(const char* path) {
auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
std::string path_name = mnt->GetHostFile(path);
if (!std::filesystem::exists(path_name)) {
return SCE_KERNEL_ERROR_ENOENT;
}
return ORBIS_OK;
}
s64 PS4_SYSV_ABI sceKernelPread(int d, void* buf, size_t nbytes, s64 offset) {
if (d < 3) {
return ORBIS_KERNEL_ERROR_EPERM;
}
if (offset < 0) {
return ORBIS_KERNEL_ERROR_EINVAL;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
return ORBIS_KERNEL_ERROR_EBADF;
}
std::scoped_lock lk{file->m_mutex};
const s64 pos = file->f.Tell();
SCOPE_EXIT {
file->f.Seek(pos);
};
file->f.Seek(offset);
return file->f.ReadRaw<u8>(buf, nbytes);
}
int PS4_SYSV_ABI sceKernelFStat(int fd, OrbisKernelStat* sb) {
LOG_INFO(Kernel_Fs, "(PARTIAL) fd = {}", fd);
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(fd);
std::memset(sb, 0, sizeof(OrbisKernelStat));
if (file->is_directory) {
sb->st_mode = 0000777u | 0040000u;
sb->st_size = 0;
sb->st_blksize = 512;
sb->st_blocks = 0;
// TODO incomplete
} else {
sb->st_mode = 0000777u | 0100000u;
sb->st_size = file->f.GetSize();
sb->st_blksize = 512;
sb->st_blocks = (sb->st_size + 511) / 512;
// TODO incomplete
}
return ORBIS_OK;
}
int PS4_SYSV_ABI posix_fstat(int fd, OrbisKernelStat* sb) {
int result = sceKernelFStat(fd, sb);
if (result < 0) {
LOG_ERROR(Kernel_Pthread, "posix_fstat: error = {}", result);
ErrSceToPosix(result);
return -1;
}
return result;
}
s32 PS4_SYSV_ABI sceKernelFsync(int fd) {
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(fd);
file->f.Flush();
return ORBIS_OK;
}
int PS4_SYSV_ABI sceKernelFtruncate(int fd, s64 length) {
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(fd);
if (file == nullptr) {
return SCE_KERNEL_ERROR_EBADF;
}
if (file->m_host_name.empty()) {
return SCE_KERNEL_ERROR_EACCES;
}
file->f.SetSize(length);
return SCE_OK;
}
static int GetDents(int fd, char* buf, int nbytes, s64* basep) {
// TODO error codes
ASSERT(buf != nullptr);
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(fd);
if (file->dirents_index == file->dirents.size()) {
return ORBIS_OK;
}
const auto& entry = file->dirents.at(file->dirents_index++);
auto str = entry.name;
auto str_size = str.size() - 1;
static int fileno = 1000; // random
OrbisKernelDirent* sce_ent = (OrbisKernelDirent*)buf;
sce_ent->d_fileno = fileno++; // TODO this should be unique but atm it changes maybe switch to a
// hash or something?
sce_ent->d_reclen = sizeof(OrbisKernelDirent);
sce_ent->d_type = (entry.isFile ? 8 : 4);
sce_ent->d_namlen = str_size;
strncpy(sce_ent->d_name, str.c_str(), ORBIS_MAX_PATH);
sce_ent->d_name[ORBIS_MAX_PATH] = '\0';
if (basep != nullptr) {
*basep = file->dirents_index;
}
return sizeof(OrbisKernelDirent);
}
int PS4_SYSV_ABI sceKernelGetdents(int fd, char* buf, int nbytes) {
return GetDents(fd, buf, nbytes, nullptr);
}
int PS4_SYSV_ABI sceKernelGetdirentries(int fd, char* buf, int nbytes, s64* basep) {
return GetDents(fd, buf, nbytes, basep);
}
s64 PS4_SYSV_ABI sceKernelPwrite(int d, void* buf, size_t nbytes, s64 offset) {
if (d < 3) {
return ORBIS_KERNEL_ERROR_EPERM;
}
if (offset < 0) {
return ORBIS_KERNEL_ERROR_EINVAL;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
return ORBIS_KERNEL_ERROR_EBADF;
}
std::scoped_lock lk{file->m_mutex};
const s64 pos = file->f.Tell();
SCOPE_EXIT {
file->f.Seek(pos);
};
file->f.Seek(offset);
return file->f.WriteRaw<u8>(buf, nbytes);
}
void fileSystemSymbolsRegister(Core::Loader::SymbolsResolver* sym) {
LIB_FUNCTION("1G3lF1Gg1k8", "libkernel", 1, "libkernel", 1, 1, sceKernelOpen);
LIB_FUNCTION("wuCroIGjt2g", "libScePosix", 1, "libkernel", 1, 1, posix_open);
LIB_FUNCTION("UK2Tl2DWUns", "libkernel", 1, "libkernel", 1, 1, sceKernelClose);
LIB_FUNCTION("bY-PO6JhzhQ", "libScePosix", 1, "libkernel", 1, 1, posix_close);
LIB_FUNCTION("4wSze92BhLI", "libkernel", 1, "libkernel", 1, 1, sceKernelWrite);
LIB_FUNCTION("+WRlkKjZvag", "libkernel", 1, "libkernel", 1, 1, _readv);
LIB_FUNCTION("Oy6IpwgtYOk", "libkernel", 1, "libkernel", 1, 1, posix_lseek);
LIB_FUNCTION("Oy6IpwgtYOk", "libScePosix", 1, "libkernel", 1, 1, posix_lseek);
LIB_FUNCTION("oib76F-12fk", "libkernel", 1, "libkernel", 1, 1, sceKernelLseek);
LIB_FUNCTION("Cg4srZ6TKbU", "libkernel", 1, "libkernel", 1, 1, sceKernelRead);
LIB_FUNCTION("AqBioC2vF3I", "libScePosix", 1, "libkernel", 1, 1, posix_read);
LIB_FUNCTION("1-LFLmRFxxM", "libkernel", 1, "libkernel", 1, 1, sceKernelMkdir);
LIB_FUNCTION("JGMio+21L4c", "libScePosix", 1, "libkernel", 1, 1, posix_mkdir);
LIB_FUNCTION("eV9wAD2riIA", "libkernel", 1, "libkernel", 1, 1, sceKernelStat);
LIB_FUNCTION("kBwCPsYX-m4", "libkernel", 1, "libkernel", 1, 1, sceKernelFStat);
LIB_FUNCTION("mqQMh1zPPT8", "libScePosix", 1, "libkernel", 1, 1, posix_fstat);
LIB_FUNCTION("VW3TVZiM4-E", "libkernel", 1, "libkernel", 1, 1, sceKernelFtruncate);
LIB_FUNCTION("E6ao34wPw+U", "libScePosix", 1, "libkernel", 1, 1, posix_stat);
LIB_FUNCTION("+r3rMFwItV4", "libkernel", 1, "libkernel", 1, 1, sceKernelPread);
LIB_FUNCTION("uWyW3v98sU4", "libkernel", 1, "libkernel", 1, 1, sceKernelCheckReachability);
LIB_FUNCTION("fTx66l5iWIA", "libkernel", 1, "libkernel", 1, 1, sceKernelFsync);
LIB_FUNCTION("j2AIqSqJP0w", "libkernel", 1, "libkernel", 1, 1, sceKernelGetdents);
LIB_FUNCTION("taRWhTJFTgE", "libkernel", 1, "libkernel", 1, 1, sceKernelGetdirentries);
LIB_FUNCTION("nKWi-N2HBV4", "libkernel", 1, "libkernel", 1, 1, sceKernelPwrite);
LIB_FUNCTION("AUXVxWeJU-A", "libkernel", 1, "libkernel", 1, 1, sceKernelUnlink);
// openOrbis (to check if it is valid out of OpenOrbis
LIB_FUNCTION("6c3rCVE-fTU", "libkernel", 1, "libkernel", 1, 1,
posix_open); // _open shoudld be equal to open function
}
} // namespace Libraries::Kernel