]>
Commit | Line | Data |
---|---|---|
e9278741 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
e9278741 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
e9278741 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
e9278741 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
e9278741 | 22 | #include <errno.h> |
07630cea | 23 | #include <unistd.h> |
e9278741 | 24 | |
07630cea | 25 | #include "fileio.h" |
e9278741 | 26 | #include "log.h" |
07630cea | 27 | #include "string-util.h" |
e9278741 | 28 | #include "util.h" |
e9278741 LP |
29 | |
30 | int main(int argc, char*argv[]) { | |
e9278741 LP |
31 | |
32 | if (argc != 2) { | |
33 | log_error("This program requires one argument."); | |
34 | return EXIT_FAILURE; | |
35 | } | |
36 | ||
4cfa2c99 | 37 | log_set_target(LOG_TARGET_AUTO); |
e9278741 LP |
38 | log_parse_environment(); |
39 | log_open(); | |
40 | ||
4c12626c LP |
41 | umask(0022); |
42 | ||
e9278741 | 43 | if (streq(argv[1], "start")) { |
fe5af612 | 44 | int r = 0; |
e9278741 | 45 | |
ece174c5 | 46 | if (unlink("/run/nologin") < 0 && errno != ENOENT) |
76ef789d LP |
47 | r = log_error_errno(errno, |
48 | "Failed to remove /run/nologin file: %m"); | |
e9278741 | 49 | |
4a8a5b29 | 50 | if (unlink("/etc/nologin") < 0 && errno != ENOENT) { |
bd118f8e LP |
51 | /* If the file doesn't exist and /etc simply |
52 | * was read-only (in which case unlink() | |
53 | * returns EROFS even if the file doesn't | |
54 | * exist), don't complain */ | |
55 | ||
56 | if (errno != EROFS || access("/etc/nologin", F_OK) >= 0) { | |
56f64d95 | 57 | log_error_errno(errno, "Failed to remove /etc/nologin file: %m"); |
fe5af612 | 58 | return EXIT_FAILURE; |
bd118f8e | 59 | } |
e9278741 LP |
60 | } |
61 | ||
fe5af612 LP |
62 | if (r < 0) |
63 | return EXIT_FAILURE; | |
4a8a5b29 | 64 | |
e9278741 | 65 | } else if (streq(argv[1], "stop")) { |
7fb3ee51 | 66 | int r; |
e9278741 | 67 | |
81b72a96 | 68 | r = write_string_file("/run/nologin", "System is going down.", WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC); |
fe5af612 | 69 | if (r < 0) { |
da927ba9 | 70 | log_error_errno(r, "Failed to create /run/nologin: %m"); |
fe5af612 LP |
71 | return EXIT_FAILURE; |
72 | } | |
e9278741 | 73 | |
e9278741 LP |
74 | } else { |
75 | log_error("Unknown verb %s.", argv[1]); | |
fe5af612 | 76 | return EXIT_FAILURE; |
e9278741 LP |
77 | } |
78 | ||
fe5af612 | 79 | return EXIT_SUCCESS; |
e9278741 | 80 | } |