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authorIlya Dryomov <idryomov@gmail.com>2016-12-02 18:35:06 +0300
committerIlya Dryomov <idryomov@gmail.com>2016-12-13 01:09:19 +0300
commit36721ece1e84a25130c4befb930509b3f96de020 (patch)
tree1ea0575d5e221a3ae900816516c6ea2098df3480 /net/ceph/auth_x.c
parent69973b830859bc6529a7a0468ba0d80ee5117826 (diff)
downloadlinux-36721ece1e84a25130c4befb930509b3f96de020.tar.xz
libceph: ceph_x_encrypt_buflen() takes in_len
Pass what's going to be encrypted - that's msg_b, not ticket_blob. ceph_x_encrypt_buflen() returns the upper bound, so this doesn't change the maxlen calculation, but makes it a bit clearer. Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
Diffstat (limited to 'net/ceph/auth_x.c')
-rw-r--r--net/ceph/auth_x.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c
index a0905f04bd13..4d14dc8c7746 100644
--- a/net/ceph/auth_x.c
+++ b/net/ceph/auth_x.c
@@ -308,8 +308,8 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac,
if (ret)
goto out_au;
- maxlen = sizeof(*msg_a) + sizeof(msg_b) +
- ceph_x_encrypt_buflen(ticket_blob_len);
+ maxlen = sizeof(*msg_a) + ticket_blob_len +
+ ceph_x_encrypt_buflen(sizeof(msg_b));
dout(" need len %d\n", maxlen);
if (au->buf && au->buf->alloc_len < maxlen) {
ceph_buffer_put(au->buf);
@@ -350,11 +350,12 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac,
p, end - p);
if (ret < 0)
goto out_au;
+
p += ret;
+ WARN_ON(p > end);
au->buf->vec.iov_len = p - au->buf->vec.iov_base;
dout(" built authorizer nonce %llx len %d\n", au->nonce,
(int)au->buf->vec.iov_len);
- BUG_ON(au->buf->vec.iov_len > maxlen);
return 0;
out_au: