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authorEric Sandeen <sandeen@redhat.com>2014-05-05 17:27:06 +1000
committerDave Chinner <david@fromorbit.com>2014-05-05 17:27:06 +1000
commitf58522c5a47a1862c6b3fad97ea9285c5d68199d (patch)
tree38014a3199297f7b7ccece36eb8ad18d8072943c /fs/xfs
parent9da93f9b7cdf8ab28da6b364cdc1fafc8670b4dc (diff)
xfs: bulletfproof xfs_qm_scall_trunc_qfiles()
Coverity noticed that if we sent junk into xfs_qm_scall_trunc_qfiles(), we could get back an uninitialized error value. So sanitize the flags we will accept, and initialize error anyway for good measure. (This bug may have been introduced via c61a9e39). Should resolve Coverity CID 1163872. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_qm_syscalls.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 3daf5ea1eb8d..f35f13b4ea73 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -278,9 +278,10 @@ xfs_qm_scall_trunc_qfiles(
xfs_mount_t *mp,
uint flags)
{
- int error;
+ int error = EINVAL;
- if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
+ if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0 ||
+ (flags & ~XFS_DQ_ALLTYPES)) {
xfs_debug(mp, "%s: flags=%x m_qflags=%x",
__func__, flags, mp->m_qflags);
return XFS_ERROR(EINVAL);