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authorJan Kara <jack@suse.cz>2014-09-04 16:19:47 +0200
committerJan Kara <jack@suse.cz>2014-09-04 21:37:39 +0200
commit4071b913622316970d0e1919f7d82b4403fec5f2 (patch)
tree0e595eaf47564dcb514009f678623171a9b2ce55 /fs
parent6d3d5e860a114ae606b1af2ba7f64cb19fbeb414 (diff)
downloadlinux-4071b913622316970d0e1919f7d82b4403fec5f2.tar.bz2
udf: Properly detect stale inodes
NFS can easily ask for inodes that are already deleted. Currently UDF happily returns such inodes which is a bug. Return -ESTALE if udf_read_inode() is asked to read deleted inode. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r--fs/udf/inode.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 788fc58ea78e..3a44d9187aad 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1435,8 +1435,10 @@ reread:
read_unlock(&sbi->s_cred_lock);
link_count = le16_to_cpu(fe->fileLinkCount);
- if (!link_count)
- link_count = 1;
+ if (!link_count) {
+ ret = -ESTALE;
+ goto out;
+ }
set_nlink(inode, link_count);
inode->i_size = le64_to_cpu(fe->informationLength);