| From | Greg Kroah-Hartman <> | Subject | [ 071/171] ceph: messenger: rework prepare_connect_authorizer() | Date | Wed, 21 Nov 2012 16:40:17 -0800 |
| |
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Elder <elder@inktank.com>
(cherry picked from commit b1c6b9803f5491e94041e6da96bc9dec3870e792)
Change prepare_connect_authorizer() so it returns without dropping the connection mutex if the connection has no get_authorizer method.
Use the symbolic CEPH_AUTH_UNKNOWN instead of 0 when assigning authorization protocols.
Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ceph/messenger.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-)
--- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -656,19 +656,29 @@ static void prepare_write_keepalive(stru static int prepare_connect_authorizer(struct ceph_connection *con) { void *auth_buf; - int auth_len = 0; - int auth_protocol = 0; + int auth_len; + int auth_protocol; + + if (!con->ops->get_authorizer) { + con->out_connect.authorizer_protocol = CEPH_AUTH_UNKNOWN; + con->out_connect.authorizer_len = 0; + + return 0; + } + + /* Can't hold the mutex while getting authorizer */ mutex_unlock(&con->mutex); - if (con->ops->get_authorizer) - con->ops->get_authorizer(con, &auth_buf, &auth_len, - &auth_protocol, &con->auth_reply_buf, - &con->auth_reply_buf_len, - con->auth_retry); + + auth_buf = NULL; + auth_len = 0; + auth_protocol = CEPH_AUTH_UNKNOWN; + 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 (test_bit(CLOSED, &con->state) || - test_bit(OPENING, &con->state)) + if (test_bit(CLOSED, &con->state) || test_bit(OPENING, &con->state)) return -EAGAIN; con->out_connect.authorizer_protocol = cpu_to_le32(auth_protocol);
|