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-rw-r--r--security/integrity/integrity_audit.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/security/integrity/integrity_audit.c b/security/integrity/integrity_audit.c
new file mode 100644
index 000000000..0ec5e4c22
--- /dev/null
+++ b/security/integrity/integrity_audit.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2008 IBM Corporation
+ * Author: Mimi Zohar <zohar@us.ibm.com>
+ *
+ * File: integrity_audit.c
+ * Audit calls for the integrity subsystem
+ */
+
+#include <linux/fs.h>
+#include <linux/gfp.h>
+#include <linux/audit.h>
+#include "integrity.h"
+
+static int integrity_audit_info;
+
+/* ima_audit_setup - enable informational auditing messages */
+static int __init integrity_audit_setup(char *str)
+{
+ unsigned long audit;
+
+ if (!kstrtoul(str, 0, &audit))
+ integrity_audit_info = audit ? 1 : 0;
+ return 1;
+}
+__setup("integrity_audit=", integrity_audit_setup);
+
+void integrity_audit_msg(int audit_msgno, struct inode *inode,
+ const unsigned char *fname, const char *op,
+ const char *cause, int result, int audit_info)
+{
+ integrity_audit_message(audit_msgno, inode, fname, op, cause,
+ result, audit_info, 0);
+}
+
+void integrity_audit_message(int audit_msgno, struct inode *inode,
+ const unsigned char *fname, const char *op,
+ const char *cause, int result, int audit_info,
+ int errno)
+{
+ struct audit_buffer *ab;
+ char name[TASK_COMM_LEN];
+
+ if (!integrity_audit_info && audit_info == 1) /* Skip info messages */
+ return;
+
+ ab = audit_log_start(audit_context(), GFP_KERNEL, audit_msgno);
+ if (!ab)
+ return;
+ audit_log_format(ab, "pid=%d uid=%u auid=%u ses=%u",
+ task_pid_nr(current),
+ from_kuid(&init_user_ns, current_uid()),
+ from_kuid(&init_user_ns, audit_get_loginuid(current)),
+ audit_get_sessionid(current));
+ audit_log_task_context(ab);
+ audit_log_format(ab, " op=%s cause=%s comm=", op, cause);
+ audit_log_untrustedstring(ab, get_task_comm(name, current));
+ if (fname) {
+ audit_log_format(ab, " name=");
+ audit_log_untrustedstring(ab, fname);
+ }
+ if (inode) {
+ audit_log_format(ab, " dev=");
+ audit_log_untrustedstring(ab, inode->i_sb->s_id);
+ audit_log_format(ab, " ino=%lu", inode->i_ino);
+ }
+ audit_log_format(ab, " res=%d errno=%d", !result, errno);
+ audit_log_end(ab);
+}