523979adfa
Based on discussions on linux-audit, as per Steve Grubb's request http://lkml.org/lkml/2009/2/6/269, the following changes were made: - forced audit result to be either 0 or 1. - made template names const - Added new stand-alone message type: AUDIT_INTEGRITY_RULE Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/*
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* Copyright (C) 2008 IBM Corporation
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* Author: Mimi Zohar <zohar@us.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* File: integrity_audit.c
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* Audit calls for the integrity subsystem
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*/
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#include <linux/fs.h>
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#include <linux/audit.h>
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#include "ima.h"
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static int ima_audit;
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#ifdef CONFIG_IMA_AUDIT
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/* ima_audit_setup - enable informational auditing messages */
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static int __init ima_audit_setup(char *str)
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{
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unsigned long audit;
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int rc, result = 0;
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char *op = "ima_audit";
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char *cause;
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rc = strict_strtoul(str, 0, &audit);
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if (rc || audit > 1)
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result = 1;
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else
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ima_audit = audit;
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cause = ima_audit ? "enabled" : "not_enabled";
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integrity_audit_msg(AUDIT_INTEGRITY_STATUS, NULL, NULL,
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op, cause, result, 0);
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return 1;
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}
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__setup("ima_audit=", ima_audit_setup);
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#endif
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void integrity_audit_msg(int audit_msgno, struct inode *inode,
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const unsigned char *fname, const char *op,
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const char *cause, int result, int audit_info)
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{
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struct audit_buffer *ab;
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if (!ima_audit && audit_info == 1) /* Skip informational messages */
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return;
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ab = audit_log_start(current->audit_context, GFP_KERNEL, audit_msgno);
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audit_log_format(ab, "integrity: pid=%d uid=%u auid=%u ses=%u",
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current->pid, current->cred->uid,
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audit_get_loginuid(current),
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audit_get_sessionid(current));
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audit_log_task_context(ab);
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switch (audit_msgno) {
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case AUDIT_INTEGRITY_DATA:
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case AUDIT_INTEGRITY_METADATA:
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case AUDIT_INTEGRITY_PCR:
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case AUDIT_INTEGRITY_STATUS:
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audit_log_format(ab, " op=%s cause=%s", op, cause);
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break;
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case AUDIT_INTEGRITY_HASH:
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audit_log_format(ab, " op=%s hash=%s", op, cause);
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break;
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default:
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audit_log_format(ab, " op=%s", op);
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}
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audit_log_format(ab, " comm=");
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audit_log_untrustedstring(ab, current->comm);
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if (fname) {
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audit_log_format(ab, " name=");
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audit_log_untrustedstring(ab, fname);
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}
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if (inode)
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audit_log_format(ab, " dev=%s ino=%lu",
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inode->i_sb->s_id, inode->i_ino);
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audit_log_format(ab, " res=%d", !result ? 0 : 1);
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audit_log_end(ab);
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}
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