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-rw-r--r--src/core/audit-fd.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/src/core/audit-fd.c b/src/core/audit-fd.c
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+++ b/src/core/audit-fd.c
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+#include <errno.h>
+
+#include "audit-fd.h"
+#include "log.h"
+
+#ifdef HAVE_AUDIT
+
+#include <libaudit.h>
+
+static bool initialized = false;
+static int audit_fd;
+
+int get_audit_fd(void) {
+
+ if (!initialized) {
+ audit_fd = audit_open();
+
+ if (audit_fd < 0) {
+ if (errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
+ log_error("Failed to connect to audit log: %m");
+
+ audit_fd = errno ? -errno : -EINVAL;
+ }
+
+ initialized = true;
+ }
+
+ return audit_fd;
+}
+
+void close_audit_fd(void) {
+
+ if (initialized && audit_fd >= 0)
+ close_nointr_nofail(audit_fd);
+
+ initialized = true;
+ audit_fd = -ECONNRESET;
+}
+
+#else
+
+int get_audit_fd(void) {
+ return -EAFNOSUPPORT;
+}
+
+void close_audit_fd(void) {
+}
+
+#endif