diff options
| author | Ilya Dryomov <idryomov@gmail.com> | 2016-12-02 16:35:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-26 08:24:41 +0100 |
| commit | 6e371f9a4144c1097a675ca482fc90cbcb0fb4e7 (patch) | |
| tree | 67e6b0e65897836ae8d7f959c92ccca7531c74a0 | |
| parent | 788a0bbc70115d2964d1b708720b30fd9f91b6ae (diff) | |
libceph: tweak calcu_signature() a little
commit 4eb4517ce7c9c573b6c823de403aeccb40018cfc upstream.
- replace an ad-hoc array with a struct
- rename to calc_signature() for consistency
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/ceph/auth_x.c | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c index ef1423294517..78c1675b0df7 100644 --- a/net/ceph/auth_x.c +++ b/net/ceph/auth_x.c @@ -707,35 +707,48 @@ static void ceph_x_invalidate_authorizer(struct ceph_auth_client *ac, invalidate_ticket(ac, CEPH_ENTITY_TYPE_AUTH); } -static int calcu_signature(struct ceph_x_authorizer *au, - struct ceph_msg *msg, __le64 *sig) +static int calc_signature(struct ceph_x_authorizer *au, struct ceph_msg *msg, + __le64 *psig) { - int ret; char tmp_enc[40]; - __le32 tmp[5] = { - cpu_to_le32(16), msg->hdr.crc, msg->footer.front_crc, - msg->footer.middle_crc, msg->footer.data_crc, - }; - ret = ceph_x_encrypt(&au->session_key, &tmp, sizeof(tmp), + struct { + __le32 len; + __le32 header_crc; + __le32 front_crc; + __le32 middle_crc; + __le32 data_crc; + } __packed sigblock; + int ret; + + sigblock.len = cpu_to_le32(4*sizeof(u32)); + sigblock.header_crc = msg->hdr.crc; + sigblock.front_crc = msg->footer.front_crc; + sigblock.middle_crc = msg->footer.middle_crc; + sigblock.data_crc = msg->footer.data_crc; + ret = ceph_x_encrypt(&au->session_key, &sigblock, sizeof(sigblock), tmp_enc, sizeof(tmp_enc)); if (ret < 0) return ret; - *sig = *(__le64*)(tmp_enc + 4); + + *psig = *(__le64 *)(tmp_enc + sizeof(u32)); return 0; } static int ceph_x_sign_message(struct ceph_auth_handshake *auth, struct ceph_msg *msg) { + __le64 sig; int ret; if (ceph_test_opt(from_msgr(msg->con->msgr), NOMSGSIGN)) return 0; - ret = calcu_signature((struct ceph_x_authorizer *)auth->authorizer, - msg, &msg->footer.sig); - if (ret < 0) + ret = calc_signature((struct ceph_x_authorizer *)auth->authorizer, + msg, &sig); + if (ret) return ret; + + msg->footer.sig = sig; msg->footer.flags |= CEPH_MSG_FOOTER_SIGNED; return 0; } @@ -749,9 +762,9 @@ static int ceph_x_check_message_signature(struct ceph_auth_handshake *auth, if (ceph_test_opt(from_msgr(msg->con->msgr), NOMSGSIGN)) return 0; - ret = calcu_signature((struct ceph_x_authorizer *)auth->authorizer, - msg, &sig_check); - if (ret < 0) + ret = calc_signature((struct ceph_x_authorizer *)auth->authorizer, + msg, &sig_check); + if (ret) return ret; if (sig_check == msg->footer.sig) return 0; |