2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
21 #include <linux/netlink.h>
23 #include <sys/socket.h>
25 #include "alloc-util.h"
26 #include "audit-util.h"
30 #include "parse-util.h"
31 #include "process-util.h"
32 #include "user-util.h"
34 int audit_session_from_pid(pid_t pid, uint32_t *id) {
35 _cleanup_free_ char *s = NULL;
42 /* We don't convert ENOENT to ESRCH here, since we can't
43 * really distuingish between "audit is not available in the
44 * kernel" and "the process does not exist", both which will
45 * result in ENOENT. */
47 p = procfs_file_alloca(pid, "sessionid");
49 r = read_one_line_file(p, &s);
53 r = safe_atou32(s, &u);
57 if (u == AUDIT_SESSION_INVALID || u <= 0)
64 int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
65 _cleanup_free_ char *s = NULL;
72 p = procfs_file_alloca(pid, "loginuid");
74 r = read_one_line_file(p, &s);
79 if (r == -ENXIO) /* the UID was -1 */
88 #if 0 /// UNNEEDED by elogind
89 bool use_audit(void) {
90 static int cached_use = -1;
95 fd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_AUDIT);
97 cached_use = errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT;