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authorVenkat Yekkirala <vyekkirala@TrustedCS.com>2006-08-04 23:17:57 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 14:53:36 -0700
commit7420ed23a4f77480b5b7b3245e5da30dd24b7575 (patch)
tree016f5bb996c5eae66754b10243c5be6226d773f2 /net/socket.c
parent96cb8e3313c7a12e026c1ed510522ae6f6023875 (diff)
[NetLabel]: SELinux support
Add NetLabel support to the SELinux LSM and modify the socket_post_create() LSM hook to return an error code. The most significant part of this patch is the addition of NetLabel hooks into the following SELinux LSM hooks: * selinux_file_permission() * selinux_socket_sendmsg() * selinux_socket_post_create() * selinux_socket_sock_rcv_skb() * selinux_socket_getpeersec_stream() * selinux_socket_getpeersec_dgram() * selinux_sock_graft() * selinux_inet_conn_request() The basic reasoning behind this patch is that outgoing packets are "NetLabel'd" by labeling their socket and the NetLabel security attributes are checked via the additional hook in selinux_socket_sock_rcv_skb(). NetLabel itself is only a labeling mechanism, similar to filesystem extended attributes, it is up to the SELinux enforcement mechanism to perform the actual access checks. In addition to the changes outlined above this patch also includes some changes to the extended bitmap (ebitmap) and multi-level security (mls) code to import and export SELinux TE/MLS attributes into and out of NetLabel. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/net/socket.c b/net/socket.c
index 6d261bf206f..6756e57e1ff 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -973,11 +973,18 @@ int sock_create_lite(int family, int type, int protocol, struct socket **res)
goto out;
}
- security_socket_post_create(sock, family, type, protocol, 1);
sock->type = type;
+ err = security_socket_post_create(sock, family, type, protocol, 1);
+ if (err)
+ goto out_release;
+
out:
*res = sock;
return err;
+out_release:
+ sock_release(sock);
+ sock = NULL;
+ goto out;
}
/* No kernel lock held - perfect */
@@ -1214,7 +1221,9 @@ static int __sock_create(int family, int type, int protocol, struct socket **res
*/
module_put(net_families[family]->owner);
*res = sock;
- security_socket_post_create(sock, family, type, protocol, kern);
+ err = security_socket_post_create(sock, family, type, protocol, kern);
+ if (err)
+ goto out_release;
out:
net_family_read_unlock();