From: dh.herrmann@gmail.com (David Herrmann) Date: Fri, 4 May 2018 16:28:22 +0200 Subject: [PATCH v2 4/4] smack: provide socketpair callback In-Reply-To: <20180504142822.15233-1-dh.herrmann@gmail.com> References: <20180504142822.15233-1-dh.herrmann@gmail.com> Message-ID: <20180504142822.15233-5-dh.herrmann@gmail.com> To: linux-security-module@vger.kernel.org List-Id: linux-security-module.vger.kernel.org From: Tom Gundersen Make sure to implement the new socketpair callback so the SO_PEERSEC call on socketpair(2)s will return correct information. Signed-off-by: Tom Gundersen Signed-off-by: David Herrmann --- security/smack/smack_lsm.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 0b414836bebd..dcb976f98df2 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -2842,6 +2842,27 @@ static int smack_socket_post_create(struct socket *sock, int family, return smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET); } +/** + * smack_socket_socketpair - create socket pair + * @socka: one socket + * @sockb: another socket + * + * Cross reference the peer labels for SO_PEERSEC + * + * Returns 0 on success, and error code otherwise + */ +static int smack_socket_socketpair(struct socket *socka, + struct socket *sockb) +{ + struct socket_smack *asp = socka->sk->sk_security; + struct socket_smack *bsp = sockb->sk->sk_security; + + asp->smk_packet = bsp->smk_out; + bsp->smk_packet = asp->smk_out; + + return 0; +} + #ifdef SMACK_IPV6_PORT_LABELING /** * smack_socket_bind - record port binding information. @@ -4724,6 +4745,7 @@ static struct security_hook_list smack_hooks[] __lsm_ro_after_init = { LSM_HOOK_INIT(unix_may_send, smack_unix_may_send), LSM_HOOK_INIT(socket_post_create, smack_socket_post_create), + LSM_HOOK_INIT(socket_socketpair, smack_socket_socketpair), #ifdef SMACK_IPV6_PORT_LABELING LSM_HOOK_INIT(socket_bind, smack_socket_bind), #endif -- 2.17.0 -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html