Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / netlabel / netlabel_user.c
blob85a96a3fddaafdaa016dbdd14aea0f9433d8c22e
1 /*
2 * NetLabel NETLINK Interface
4 * This file defines the NETLINK interface for the NetLabel system. The
5 * NetLabel system manages static and dynamic label mappings for network
6 * protocols such as CIPSO and RIPSO.
8 * Author: Paul Moore <paul.moore@hp.com>
13 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
23 * the GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 #include <linux/init.h>
32 #include <linux/types.h>
33 #include <linux/list.h>
34 #include <linux/socket.h>
35 #include <linux/audit.h>
36 #include <linux/tty.h>
37 #include <linux/security.h>
38 #include <net/sock.h>
39 #include <net/netlink.h>
40 #include <net/genetlink.h>
41 #include <net/netlabel.h>
42 #include <asm/bug.h>
44 #include "netlabel_mgmt.h"
45 #include "netlabel_unlabeled.h"
46 #include "netlabel_cipso_v4.h"
47 #include "netlabel_user.h"
50 * NetLabel NETLINK Setup Functions
53 /**
54 * netlbl_netlink_init - Initialize the NETLINK communication channel
56 * Description:
57 * Call out to the NetLabel components so they can register their families and
58 * commands with the Generic NETLINK mechanism. Returns zero on success and
59 * non-zero on failure.
62 int netlbl_netlink_init(void)
64 int ret_val;
66 ret_val = netlbl_mgmt_genl_init();
67 if (ret_val != 0)
68 return ret_val;
70 ret_val = netlbl_cipsov4_genl_init();
71 if (ret_val != 0)
72 return ret_val;
74 ret_val = netlbl_unlabel_genl_init();
75 if (ret_val != 0)
76 return ret_val;
78 return 0;
82 * NetLabel Audit Functions
85 /**
86 * netlbl_audit_start_common - Start an audit message
87 * @type: audit message type
88 * @audit_info: NetLabel audit information
90 * Description:
91 * Start an audit message using the type specified in @type and fill the audit
92 * message with some fields common to all NetLabel audit messages. Returns
93 * a pointer to the audit buffer on success, NULL on failure.
96 struct audit_buffer *netlbl_audit_start_common(int type,
97 struct netlbl_audit *audit_info)
99 struct audit_context *audit_ctx = current->audit_context;
100 struct audit_buffer *audit_buf;
101 char *secctx;
102 u32 secctx_len;
104 if (audit_enabled == 0)
105 return NULL;
107 audit_buf = audit_log_start(audit_ctx, GFP_ATOMIC, type);
108 if (audit_buf == NULL)
109 return NULL;
111 audit_log_format(audit_buf, "netlabel: auid=%u", audit_info->loginuid);
113 if (audit_info->secid != 0 &&
114 security_secid_to_secctx(audit_info->secid,
115 &secctx,
116 &secctx_len) == 0) {
117 audit_log_format(audit_buf, " subj=%s", secctx);
118 security_release_secctx(secctx, secctx_len);
121 return audit_buf;