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SPU/LV2: Fix tiny race conditions

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This commit is contained in:
Eladash 2022-09-18 21:19:34 +03:00 • committed by Ivan
parent 3581c5b078
commit 194f7375da
18 changed files with 130 additions and 36 deletions
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33
rpcs3/Emu/Cell/lv2/sys_fs.cpp
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@ -839,6 +839,7 @@ error_code sys_fs_open(ppu_thread& ppu, vm::cptr<char> path, s32 flags, vm::ptr<
return result;
}))
{
ppu.check_state();
*fd = id;
return CELL_OK;
}
@ -962,7 +963,7 @@ error_code sys_fs_write(ppu_thread& ppu, u32 fd, vm::cptr<void> buf, u64 nbytes,
return CELL_EROFS;
}
std::lock_guard lock(file->mp->mutex);
std::unique_lock lock(file->mp->mutex);
if (!file->file)
{
@ -986,8 +987,11 @@ error_code sys_fs_write(ppu_thread& ppu, u32 fd, vm::cptr<void> buf, u64 nbytes,
file->file.seek(0, fs::seek_end);
}
*nwrite = file->op_write(buf, nbytes);
const u64 written = file->op_write(buf, nbytes);
lock.unlock();
ppu.check_state();
*nwrite = written;
return CELL_OK;
}
@ -1102,7 +1106,7 @@ error_code sys_fs_opendir(ppu_thread& ppu, vm::cptr<char> path, vm::ptr<u32> fd)
return {CELL_ENOTDIR, path};
}
std::lock_guard lock(mp->mutex);
std::unique_lock lock(mp->mutex);
const fs::dir dir(local_path);
@ -1177,6 +1181,9 @@ error_code sys_fs_opendir(ppu_thread& ppu, vm::cptr<char> path, vm::ptr<u32> fd)
if (const u32 id = idm::make<lv2_fs_object, lv2_dir>(processed_path, std::move(data)))
{
lock.unlock();
ppu.check_state();
*fd = id;
return CELL_OK;
}
@ -1199,6 +1206,8 @@ error_code sys_fs_readdir(ppu_thread& ppu, u32 fd, vm::ptr<CellFsDirent> dir, vm
return CELL_EBADF;
}
ppu.check_state();
if (auto* info = directory->dir_read())
{
dir->d_type = info->is_directory ? CELL_FS_TYPE_DIRECTORY : CELL_FS_TYPE_REGULAR;
@ -1265,7 +1274,7 @@ error_code sys_fs_stat(ppu_thread& ppu, vm::cptr<char> path, vm::ptr<CellFsStat>
return {CELL_ENOTMOUNTED, path};
}
std::lock_guard lock(mp->mutex);
std::unique_lock lock(mp->mutex);
fs::stat_t info{};
@ -1308,6 +1317,9 @@ error_code sys_fs_stat(ppu_thread& ppu, vm::cptr<char> path, vm::ptr<CellFsStat>
}
}
lock.unlock();
ppu.check_state();
sb->mode = info.is_directory ? CELL_FS_S_IFDIR | 0777 : CELL_FS_S_IFREG | 0666;
sb->uid = mp->flags & lv2_mp_flag::no_uid_gid ? -1 : 0;
sb->gid = mp->flags & lv2_mp_flag::no_uid_gid ? -1 : 0;
@ -1340,7 +1352,7 @@ error_code sys_fs_fstat(ppu_thread& ppu, u32 fd, vm::ptr<CellFsStat> sb)
return CELL_EBADF;
}
std::lock_guard lock(file->mp->mutex);
std::unique_lock lock(file->mp->mutex);
if (!file->file)
{
@ -1352,7 +1364,9 @@ error_code sys_fs_fstat(ppu_thread& ppu, u32 fd, vm::ptr<CellFsStat> sb)
return CELL_EIO;
}
const fs::stat_t& info = file->file.stat();
const fs::stat_t info = file->file.stat();
lock.unlock();
ppu.check_state();
sb->mode = info.is_directory ? CELL_FS_S_IFDIR | 0777 : CELL_FS_S_IFREG | 0666;
sb->uid = file->mp->flags & lv2_mp_flag::no_uid_gid ? -1 : 0;
@ -2342,7 +2356,7 @@ error_code sys_fs_lseek(ppu_thread& ppu, u32 fd, s64 offset, s32 whence, vm::ptr
return CELL_EBADF;
}
std::lock_guard lock(file->mp->mutex);
std::unique_lock lock(file->mp->mutex);
if (!file->file)
{
@ -2367,6 +2381,9 @@ error_code sys_fs_lseek(ppu_thread& ppu, u32 fd, s64 offset, s32 whence, vm::ptr
return CELL_EIO; // ???
}
lock.unlock();
ppu.check_state();
*pos = result;
return CELL_OK;
}
@ -2662,6 +2679,8 @@ error_code sys_fs_disk_free(ppu_thread& ppu, vm::cptr<char> path, vm::ptr<u64> t
return {CELL_ENOTSUP, path};
}
ppu.check_state();
if (mp->flags & lv2_mp_flag::read_only)
{
// TODO: check /dev_bdvd