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authorLuis Henriques <lhenriques@suse.com>2017-07-28 11:56:40 +0100
committerIlya Dryomov <idryomov@gmail.com>2017-09-06 19:56:50 +0200
commit397f238994a5dae1b10e8a6efe9a2e2a95052cee (patch)
tree7df8cdbc580dd035874af23647653836da0da0d6 /fs/ceph
parent06d74376c8af32f5b8d777a943aa4dc99165088b (diff)
downloadlinux-397f238994a5dae1b10e8a6efe9a2e2a95052cee.tar.bz2
ceph: check negative offsets in ceph_llseek()
When a user requests SEEK_HOLE or SEEK_DATA with a negative offset ceph_llseek should return -ENXIO. Currently -EINVAL is being returned for SEEK_DATA and 0 for SEEK_HOLE. Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/file.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 2eb43a54e2d6..9634eb79b041 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1481,13 +1481,13 @@ static loff_t ceph_llseek(struct file *file, loff_t offset, int whence)
offset += file->f_pos;
break;
case SEEK_DATA:
- if (offset >= i_size) {
+ if (offset < 0 || offset >= i_size) {
ret = -ENXIO;
goto out;
}
break;
case SEEK_HOLE:
- if (offset >= i_size) {
+ if (offset < 0 || offset >= i_size) {
ret = -ENXIO;
goto out;
}