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authorKay Sievers <kay@vrfy.org>2015-06-09 14:27:33 +0200
committerKay Sievers <kay@vrfy.org>2015-06-11 10:52:46 +0200
commita095315b3c31f7a419baceac82c26c3c5ac0cd12 (patch)
treea5a70cf5b5430c0a6873311437b8345d7071f249 /src/basic/audit.c
parent37c47e5e5b8e47dd886ed6e8355b1203082b4a3e (diff)
build-sys: split internal basic/ library from shared/
basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/
Diffstat (limited to 'src/basic/audit.c')
-rw-r--r--src/basic/audit.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/basic/audit.c b/src/basic/audit.c
new file mode 100644
index 0000000000..54148fcf18
--- /dev/null
+++ b/src/basic/audit.c
@@ -0,0 +1,94 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 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 <errno.h>
+#include <stdio.h>
+
+#include "macro.h"
+#include "audit.h"
+#include "util.h"
+#include "process-util.h"
+#include "fileio.h"
+
+int audit_session_from_pid(pid_t pid, uint32_t *id) {
+ _cleanup_free_ char *s = NULL;
+ const char *p;
+ uint32_t u;
+ int r;
+
+ assert(id);
+
+ p = procfs_file_alloca(pid, "sessionid");
+
+ r = read_one_line_file(p, &s);
+ if (r < 0)
+ return r;
+
+ r = safe_atou32(s, &u);
+ if (r < 0)
+ return r;
+
+ if (u == AUDIT_SESSION_INVALID || u <= 0)
+ return -ENXIO;
+
+ *id = u;
+ return 0;
+}
+
+int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
+ _cleanup_free_ char *s = NULL;
+ const char *p;
+ uid_t u;
+ int r;
+
+ assert(uid);
+
+ p = procfs_file_alloca(pid, "loginuid");
+
+ r = read_one_line_file(p, &s);
+ if (r < 0)
+ return r;
+
+ r = parse_uid(s, &u);
+ if (r < 0)
+ return r;
+
+ *uid = (uid_t) u;
+ return 0;
+}
+
+bool use_audit(void) {
+ static int cached_use = -1;
+
+ if (cached_use < 0) {
+ int fd;
+
+ fd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_AUDIT);
+ if (fd < 0)
+ cached_use = errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT;
+ else {
+ cached_use = true;
+ safe_close(fd);
+ }
+ }
+
+ return cached_use;
+}