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ceph: fix get_ticket_handler() error handling

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get_ticket_handler() returns a valid pointer or it returns
ERR_PTR(-ENOMEM) if kzalloc() fails.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Dan Carpenter 2010-08-26 11:12:38 +02:00 committed by Sage Weil
parent e072f8aa35
commit b545787dbb
1 changed files with 9 additions and 6 deletions
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15
fs/ceph/auth_x.c
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@ -376,7 +376,7 @@ static void ceph_x_validate_tickets(struct ceph_auth_client *ac, int *pneed)
th = get_ticket_handler(ac, service);
if (!th) {
if (IS_ERR(th)) {
*pneed |= service;
continue;
}
@ -399,6 +399,9 @@ static int ceph_x_build_request(struct ceph_auth_client *ac,
struct ceph_x_ticket_handler *th =
get_ticket_handler(ac, CEPH_ENTITY_TYPE_AUTH);
if (IS_ERR(th))
return PTR_ERR(th);
ceph_x_validate_tickets(ac, &need);
dout("build_request want %x have %x need %x\n",
@ -450,7 +453,6 @@ static int ceph_x_build_request(struct ceph_auth_client *ac,
return -ERANGE;
head->op = cpu_to_le16(CEPHX_GET_PRINCIPAL_SESSION_KEY);
BUG_ON(!th);
ret = ceph_x_build_authorizer(ac, th, &xi->auth_authorizer);
if (ret)
return ret;
@ -505,7 +507,8 @@ static int ceph_x_handle_reply(struct ceph_auth_client *ac, int result,
case CEPHX_GET_PRINCIPAL_SESSION_KEY:
th = get_ticket_handler(ac, CEPH_ENTITY_TYPE_AUTH);
BUG_ON(!th);
if (IS_ERR(th))
return PTR_ERR(th);
ret = ceph_x_proc_ticket_reply(ac, &th->session_key,
buf + sizeof(*head), end);
break;
@ -563,8 +566,8 @@ static int ceph_x_verify_authorizer_reply(struct ceph_auth_client *ac,
void *end = p + sizeof(au->reply_buf);
th = get_ticket_handler(ac, au->service);
if (!th)
return -EIO; /* hrm! */
if (IS_ERR(th))
return PTR_ERR(th);
ret = ceph_x_decrypt(&th->session_key, &p, end, &reply, sizeof(reply));
if (ret < 0)
return ret;
@ -626,7 +629,7 @@ static void ceph_x_invalidate_authorizer(struct ceph_auth_client *ac,
struct ceph_x_ticket_handler *th;
th = get_ticket_handler(ac, peer_type);
if (th && !IS_ERR(th))
if (!IS_ERR(th))
remove_ticket_handler(ac, th);
}