From 76cc071a06afb4d2dd17bb1b855a233a419e7e02 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Fri, 27 May 2011 13:42:10 -0700 Subject: ncpfs: fix rename over directory with dangling references ncpfs does not handle references to unlinked directories (or so it would seem given the ncp_rmdir check). Since it is also possible to rename over an empty directory, perform the same check here. CC: Petr Vandrovec CC: linux-kernel@vger.kernel.org Signed-off-by: Sage Weil Signed-off-by: Al Viro --- fs/ncpfs/dir.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index 81c287d105d5..9c51f621e901 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -1144,8 +1144,16 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, old_dentry->d_parent->d_name.name, old_dentry->d_name.name, new_dentry->d_parent->d_name.name, new_dentry->d_name.name); - if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode)) + if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode)) { + /* + * fail with EBUSY if there are still references to this + * directory. + */ dentry_unhash(new_dentry); + error = -EBUSY; + if (!d_unhashed(new_dentry)) + goto out; + } ncp_age_dentry(server, old_dentry); ncp_age_dentry(server, new_dentry); -- cgit v1.2.3