提交 28ff3ed1 编写于 作者: G Grissiom

romfs: fix a use-before-set bug on checking the dirent

上级 00197fde
......@@ -51,8 +51,8 @@ int dfs_romfs_ioctl(struct dfs_fd *file, int cmd, void *args)
rt_inline int check_dirent(struct romfs_dirent *dirent)
{
if (!(dirent->type == ROMFS_DIRENT_FILE || dirent->type == ROMFS_DIRENT_DIR) ||
(dirent->size == 0 || dirent->size == ~0))
if ((dirent->type != ROMFS_DIRENT_FILE && dirent->type != ROMFS_DIRENT_DIR)
|| dirent->size == ~0)
return -1;
return 0;
}
......@@ -191,7 +191,7 @@ int dfs_romfs_open(struct dfs_fd *file)
root_dirent = (struct romfs_dirent *)file->fs->data;
if (check_dirent(dirent) != 0)
if (check_dirent(root_dirent) != 0)
return -DFS_STATUS_EIO;
if (file->flags & (DFS_O_CREAT | DFS_O_WRONLY | DFS_O_APPEND | DFS_O_TRUNC | DFS_O_RDWR))
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册