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| author | Luis Henriques <lhenriques@suse.com> | 2017-05-05 18:28:44 +0100 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2017-05-24 18:10:54 +0200 |
| commit | 42c99fc4c7069371da7b04b9099319dd1c633ee2 (patch) | |
| tree | c4d4c136eb0924a4e4f23c8dfcb53eff507c8eac /fs | |
| parent | 0a2ad541071f99eaf4589c3551176fca191c1ee2 (diff) | |
| download | linux-42c99fc4c7069371da7b04b9099319dd1c633ee2.tar.gz | |
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.c | 6 |
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; |