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
18static int integrity_audit_info;
19
20/* ima_audit_setup - enable informational auditing messages */
21static 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
31void 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(current->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=");
49	audit_log_string(ab, op);
50	audit_log_format(ab, " cause=");
51	audit_log_string(ab, cause);
52	audit_log_format(ab, " comm=");
53	audit_log_untrustedstring(ab, get_task_comm(name, current));
54	if (fname) {
55		audit_log_format(ab, " name=");
56		audit_log_untrustedstring(ab, fname);
57	}
58	if (inode) {
59		audit_log_format(ab, " dev=");
60		audit_log_untrustedstring(ab, inode->i_sb->s_id);
61		audit_log_format(ab, " ino=%lu", inode->i_ino);
62	}
63	audit_log_format(ab, " res=%d", !result);
64	audit_log_end(ab);
65}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (C) 2008 IBM Corporation
 4 * Author: Mimi Zohar <zohar@us.ibm.com>
 5 *
 
 
 
 
 6 * File: integrity_audit.c
 7 *	Audit calls for the integrity subsystem
 8 */
 9
10#include <linux/fs.h>
11#include <linux/gfp.h>
12#include <linux/audit.h>
13#include "integrity.h"
14
15static int integrity_audit_info;
16
17/* ima_audit_setup - enable informational auditing messages */
18static int __init integrity_audit_setup(char *str)
19{
20	unsigned long audit;
21
22	if (!kstrtoul(str, 0, &audit))
23		integrity_audit_info = audit ? 1 : 0;
24	return 1;
25}
26__setup("integrity_audit=", integrity_audit_setup);
27
28void integrity_audit_msg(int audit_msgno, struct inode *inode,
29			 const unsigned char *fname, const char *op,
30			 const char *cause, int result, int audit_info)
31{
32	integrity_audit_message(audit_msgno, inode, fname, op, cause,
33				result, audit_info, 0);
34}
35
36void integrity_audit_message(int audit_msgno, struct inode *inode,
37			     const unsigned char *fname, const char *op,
38			     const char *cause, int result, int audit_info,
39			     int errno)
40{
41	struct audit_buffer *ab;
42	char name[TASK_COMM_LEN];
43
44	if (!integrity_audit_info && audit_info == 1)	/* Skip info messages */
45		return;
46
47	ab = audit_log_start(audit_context(), GFP_KERNEL, audit_msgno);
48	if (!ab)
49		return;
50	audit_log_format(ab, "pid=%d uid=%u auid=%u ses=%u",
51			 task_pid_nr(current),
52			 from_kuid(&init_user_ns, current_uid()),
53			 from_kuid(&init_user_ns, audit_get_loginuid(current)),
54			 audit_get_sessionid(current));
55	audit_log_task_context(ab);
56	audit_log_format(ab, " op=%s cause=%s comm=", op, cause);
 
 
 
 
57	audit_log_untrustedstring(ab, get_task_comm(name, current));
58	if (fname) {
59		audit_log_format(ab, " name=");
60		audit_log_untrustedstring(ab, fname);
61	}
62	if (inode) {
63		audit_log_format(ab, " dev=");
64		audit_log_untrustedstring(ab, inode->i_sb->s_id);
65		audit_log_format(ab, " ino=%lu", inode->i_ino);
66	}
67	audit_log_format(ab, " res=%d errno=%d", !result, errno);
68	audit_log_end(ab);
69}