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authorYan, Zheng <zyan@redhat.com>2016-06-13 19:05:13 +0800
committerIlya Dryomov <idryomov@gmail.com>2016-07-28 02:55:37 +0200
commitcd08e0a274ba6215b79c83809b331e8af17196ba (patch)
tree47f2224fe1be44a30239b4a355eb262373919ab5 /net
parent30c156d9951e0aa88202707d80c583b0a09d3167 (diff)
downloadlinux-cd08e0a274ba6215b79c83809b331e8af17196ba.tar.bz2
libceph: make sure redirect does not change namespace
Signed-off-by: Yan, Zheng <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net')
-rw-r--r--net/ceph/osd_client.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index b68cc15e9cdc..b5ec09612ff7 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -2608,10 +2608,23 @@ static int ceph_oloc_decode(void **p, void *end,
}
if (struct_v >= 5) {
+ bool changed = false;
+
len = ceph_decode_32(p);
if (len > 0) {
ceph_decode_need(p, end, len, e_inval);
+ if (!oloc->pool_ns ||
+ ceph_compare_string(oloc->pool_ns, *p, len))
+ changed = true;
*p += len;
+ } else {
+ if (oloc->pool_ns)
+ changed = true;
+ }
+ if (changed) {
+ /* redirect changes namespace */
+ pr_warn("ceph_object_locator::nspace is changed\n");
+ goto e_inval;
}
}
@@ -2820,7 +2833,9 @@ static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
goto out_unlock_session;
}
+ m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns;
ret = decode_MOSDOpReply(msg, &m);
+ m.redirect.oloc.pool_ns = NULL;
if (ret) {
pr_err("failed to decode MOSDOpReply for tid %llu: %d\n",
req->r_tid, ret);