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libceph: make sure redirect does not change namespace 

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2016-06-13 19:05:13 +08:00 committed by Ilya Dryomov
parent 30c156d995
commit cd08e0a274
1 changed files with 15 additions and 0 deletions
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15
net/ceph/osd_client.c
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@ -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);