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sys_fs: Fix race in file stream API

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Eladash 2021-09-27 19:25:20 +03:00 • committed by Elad Ashkenazi
parent 781c5a76d9
commit 2243e22630
1 changed files with 8 additions and 0 deletions
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8
rpcs3/Emu/Cell/lv2/sys_fs.cpp
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@ -3125,6 +3125,7 @@ error_code sys_fs_lsn_lock(ppu_thread&, u32 fd)
return CELL_OK; return CELL_OK;
} }
std::lock_guard lock(file->mp->mutex);
file->lock.compare_and_swap(0, 1); file->lock.compare_and_swap(0, 1);
return CELL_OK; return CELL_OK;
} }
@ -3140,7 +3141,14 @@ error_code sys_fs_lsn_unlock(ppu_thread&, u32 fd)
return CELL_EBADF; return CELL_EBADF;
} }
// See sys_fs_lsn_lock
if (file->mp == &g_mp_sys_dev_hdd0 || file->mp->flags & lv2_mp_flag::strict_get_block_size)
{
return CELL_OK;
}
// Unlock unconditionally // Unlock unconditionally
std::lock_guard lock(file->mp->mutex);
file->lock.compare_and_swap(1, 0); file->lock.compare_and_swap(1, 0);
return CELL_OK; return CELL_OK;
} }