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c1165f82 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2012 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
c1165f82 | 22 | |
ffc227c9 | 23 | #include <errno.h> |
c1165f82 | 24 | #include "audit-fd.h" |
c1165f82 LP |
25 | |
26 | #ifdef HAVE_AUDIT | |
27 | ||
ffc227c9 | 28 | #include <stdbool.h> |
c1165f82 LP |
29 | #include <libaudit.h> |
30 | ||
ffc227c9 LP |
31 | #include "log.h" |
32 | #include "util.h" | |
3ffd4af2 | 33 | #include "fd-util.h" |
ffc227c9 | 34 | |
c1165f82 LP |
35 | static bool initialized = false; |
36 | static int audit_fd; | |
37 | ||
38 | int get_audit_fd(void) { | |
39 | ||
40 | if (!initialized) { | |
41 | audit_fd = audit_open(); | |
42 | ||
43 | if (audit_fd < 0) { | |
44 | if (errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT) | |
56f64d95 | 45 | log_error_errno(errno, "Failed to connect to audit log: %m"); |
c1165f82 LP |
46 | |
47 | audit_fd = errno ? -errno : -EINVAL; | |
48 | } | |
49 | ||
50 | initialized = true; | |
51 | } | |
52 | ||
53 | return audit_fd; | |
54 | } | |
55 | ||
56 | void close_audit_fd(void) { | |
57 | ||
58 | if (initialized && audit_fd >= 0) | |
03e334a1 | 59 | safe_close(audit_fd); |
c1165f82 LP |
60 | |
61 | initialized = true; | |
62 | audit_fd = -ECONNRESET; | |
63 | } | |
64 | ||
65 | #else | |
66 | ||
67 | int get_audit_fd(void) { | |
68 | return -EAFNOSUPPORT; | |
69 | } | |
70 | ||
71 | void close_audit_fd(void) { | |
72 | } | |
73 | ||
74 | #endif |