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authorLuis Henriques <lhenriques@suse.com>2017-05-05 18:28:44 +0100
committerIlya Dryomov <idryomov@gmail.com>2017-05-24 18:10:54 +0200
commit42c99fc4c7069371da7b04b9099319dd1c633ee2 (patch)
treec4d4c136eb0924a4e4f23c8dfcb53eff507c8eac /fs
parent0a2ad541071f99eaf4589c3551176fca191c1ee2 (diff)
downloadlinux-42c99fc4c7069371da7b04b9099319dd1c633ee2.tar.bz2
ceph: check that the new inode size is within limits in ceph_fallocate()
Currently the ceph client doesn't respect the rlimit in fallocate. This means that a user can allocate a file with size > RLIMIT_FSIZE. This patch adds the call to inode_newsize_ok() to verify filesystem limits and ulimits. This should make ceph successfully run xfstest generic/228. Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ceph/file.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 3fdde0b283c9..29308a80d66f 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1671,8 +1671,12 @@ static long ceph_fallocate(struct file *file, int mode,
}
size = i_size_read(inode);
- if (!(mode & FALLOC_FL_KEEP_SIZE))
+ if (!(mode & FALLOC_FL_KEEP_SIZE)) {
endoff = offset + length;
+ ret = inode_newsize_ok(inode, endoff);
+ if (ret)
+ goto unlock;
+ }
if (fi->fmode & CEPH_FILE_MODE_LAZY)
want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO;