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Message-Id: <20121122004041.002564424@linuxfoundation.org>
Date: Wed, 21 Nov 2012 16:40:22 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
alan@...rguk.ukuu.org.uk, Alex Elder <elder@...tank.com>,
Sage Weil <sage@...tank.com>
Subject: [ 076/171] ceph: have get_authorizer methods return pointers
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Elder <elder@...tank.com>
(cherry picked from commit a3530df33eb91d787d08c7383a0a9982690e42d0)
Have the get_authorizer auth_client method return a ceph_auth
pointer rather than an integer, pointer-encoding any returned
error value. This is to pave the way for making use of the
returned value in an upcoming patch.
Signed-off-by: Alex Elder <elder@...tank.com>
Reviewed-by: Sage Weil <sage@...tank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
fs/ceph/mds_client.c | 20 +++++++++++++-------
include/linux/ceph/messenger.h | 8 +++++---
net/ceph/messenger.c | 8 ++++----
net/ceph/osd_client.c | 19 ++++++++++++-------
4 files changed, 34 insertions(+), 21 deletions(-)
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -3395,15 +3395,20 @@ out:
/*
* authentication
*/
-static int get_authorizer(struct ceph_connection *con,
- void **buf, int *len, int *proto,
- void **reply_buf, int *reply_len, int force_new)
+
+/*
+ * Note: returned pointer is the address of a structure that's
+ * managed separately. Caller must *not* attempt to free it.
+ */
+static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
+ void **buf, int *len, int *proto,
+ void **reply_buf, int *reply_len,
+ int force_new)
{
struct ceph_mds_session *s = con->private;
struct ceph_mds_client *mdsc = s->s_mdsc;
struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
struct ceph_auth_handshake *auth = &s->s_auth;
- int ret = 0;
if (force_new && auth->authorizer) {
if (ac->ops && ac->ops->destroy_authorizer)
@@ -3411,9 +3416,10 @@ static int get_authorizer(struct ceph_co
auth->authorizer = NULL;
}
if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) {
- ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_MDS, auth);
+ int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
+ auth);
if (ret)
- return ret;
+ return ERR_PTR(ret);
}
*proto = ac->protocol;
@@ -3422,7 +3428,7 @@ static int get_authorizer(struct ceph_co
*reply_buf = auth->authorizer_reply_buf;
*reply_len = auth->authorizer_reply_buf_len;
- return 0;
+ return auth;
}
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -25,9 +25,11 @@ struct ceph_connection_operations {
void (*dispatch) (struct ceph_connection *con, struct ceph_msg *m);
/* authorize an outgoing connection */
- int (*get_authorizer) (struct ceph_connection *con,
- void **buf, int *len, int *proto,
- void **reply_buf, int *reply_len, int force_new);
+ struct ceph_auth_handshake *(*get_authorizer) (
+ struct ceph_connection *con,
+ void **buf, int *len, int *proto,
+ void **reply_buf, int *reply_len,
+ int force_new);
int (*verify_authorizer_reply) (struct ceph_connection *con, int len);
int (*invalidate_authorizer)(struct ceph_connection *con);
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -658,7 +658,7 @@ static int prepare_connect_authorizer(st
void *auth_buf;
int auth_len;
int auth_protocol;
- int ret;
+ struct ceph_auth_handshake *auth;
if (!con->ops->get_authorizer) {
con->out_connect.authorizer_protocol = CEPH_AUTH_UNKNOWN;
@@ -674,13 +674,13 @@ static int prepare_connect_authorizer(st
auth_buf = NULL;
auth_len = 0;
auth_protocol = CEPH_AUTH_UNKNOWN;
- ret = con->ops->get_authorizer(con, &auth_buf, &auth_len,
+ auth = con->ops->get_authorizer(con, &auth_buf, &auth_len,
&auth_protocol, &con->auth_reply_buf,
&con->auth_reply_buf_len, con->auth_retry);
mutex_lock(&con->mutex);
- if (ret)
- return ret;
+ if (IS_ERR(auth))
+ return PTR_ERR(auth);
if (test_bit(CLOSED, &con->state) || test_bit(OPENING, &con->state))
return -EAGAIN;
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -2108,15 +2108,19 @@ static void put_osd_con(struct ceph_conn
/*
* authentication
*/
-static int get_authorizer(struct ceph_connection *con,
- void **buf, int *len, int *proto,
- void **reply_buf, int *reply_len, int force_new)
+/*
+ * Note: returned pointer is the address of a structure that's
+ * managed separately. Caller must *not* attempt to free it.
+ */
+static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
+ void **buf, int *len, int *proto,
+ void **reply_buf, int *reply_len,
+ int force_new)
{
struct ceph_osd *o = con->private;
struct ceph_osd_client *osdc = o->o_osdc;
struct ceph_auth_client *ac = osdc->client->monc.auth;
struct ceph_auth_handshake *auth = &o->o_auth;
- int ret = 0;
if (force_new && auth->authorizer) {
if (ac->ops && ac->ops->destroy_authorizer)
@@ -2124,9 +2128,10 @@ static int get_authorizer(struct ceph_co
auth->authorizer = NULL;
}
if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) {
- ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, auth);
+ int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
+ auth);
if (ret)
- return ret;
+ return ERR_PTR(ret);
}
*proto = ac->protocol;
@@ -2135,7 +2140,7 @@ static int get_authorizer(struct ceph_co
*reply_buf = auth->authorizer_reply_buf;
*reply_len = auth->authorizer_reply_buf_len;
- return 0;
+ return auth;
}
--
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