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authorChristoph Hellwig <hch@lst.de>2011-01-14 13:07:30 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-17 02:25:30 -0500
commit64c23e86873ee410554d6d1c76b60da47025e96f (patch)
treeb30c5ff8782ebfdec6956d7834f796731fd3a1d4 /fs/xfs
parenteb745dbccce56f1bbe3f80b95ad2a325145171c2 (diff)
make the feature checks in ->fallocate future proof
Instead of various home grown checks that might need updates for new flags just check for any bit outside the mask of the features supported by the filesystem. This makes the check future proof for any newly added flag. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index da54403633b..a4ecc2188a0 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -518,6 +518,9 @@ xfs_vn_fallocate(
xfs_inode_t *ip = XFS_I(inode);
int cmd = XFS_IOC_RESVSP;
+ if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+ return -EOPNOTSUPP;
+
/* preallocation on directories not yet supported */
error = -ENODEV;
if (S_ISDIR(inode->i_mode))