LSM: bury struct security_mnt_opts
[muen/linux.git] / security / integrity / integrity_audit.c
1 /*
2  * Copyright (C) 2008 IBM Corporation
3  * Author: Mimi Zohar <zohar@us.ibm.com>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, version 2 of the License.
8  *
9  * File: integrity_audit.c
10  *      Audit calls for the integrity subsystem
11  */
12
13 #include <linux/fs.h>
14 #include <linux/gfp.h>
15 #include <linux/audit.h>
16 #include "integrity.h"
17
18 static int integrity_audit_info;
19
20 /* ima_audit_setup - enable informational auditing messages */
21 static int __init integrity_audit_setup(char *str)
22 {
23         unsigned long audit;
24
25         if (!kstrtoul(str, 0, &audit))
26                 integrity_audit_info = audit ? 1 : 0;
27         return 1;
28 }
29 __setup("integrity_audit=", integrity_audit_setup);
30
31 void integrity_audit_msg(int audit_msgno, struct inode *inode,
32                          const unsigned char *fname, const char *op,
33                          const char *cause, int result, int audit_info)
34 {
35         struct audit_buffer *ab;
36         char name[TASK_COMM_LEN];
37
38         if (!integrity_audit_info && audit_info == 1)   /* Skip info messages */
39                 return;
40
41         ab = audit_log_start(audit_context(), GFP_KERNEL, audit_msgno);
42         audit_log_format(ab, "pid=%d uid=%u auid=%u ses=%u",
43                          task_pid_nr(current),
44                          from_kuid(&init_user_ns, current_cred()->uid),
45                          from_kuid(&init_user_ns, audit_get_loginuid(current)),
46                          audit_get_sessionid(current));
47         audit_log_task_context(ab);
48         audit_log_format(ab, " op=%s cause=%s comm=", op, cause);
49         audit_log_untrustedstring(ab, get_task_comm(name, current));
50         if (fname) {
51                 audit_log_format(ab, " name=");
52                 audit_log_untrustedstring(ab, fname);
53         }
54         if (inode) {
55                 audit_log_format(ab, " dev=");
56                 audit_log_untrustedstring(ab, inode->i_sb->s_id);
57                 audit_log_format(ab, " ino=%lu", inode->i_ino);
58         }
59         audit_log_format(ab, " res=%d", !result);
60         audit_log_end(ab);
61 }