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3d20ed6d LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
3d20ed6d LP |
9 | (at your option) any later version. |
10 | ||
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 | |
5430f7f2 | 14 | Lesser General Public License for more details. |
3d20ed6d | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
3d20ed6d LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
3d20ed6d | 20 | #include <errno.h> |
07630cea LP |
21 | #include <stdbool.h> |
22 | #include <stdio.h> | |
ce30c8dc | 23 | #include <sys/prctl.h> |
07630cea | 24 | #include <unistd.h> |
3d20ed6d | 25 | |
cf0fbc49 | 26 | #include "proc-cmdline.h" |
0b452006 | 27 | #include "process-util.h" |
ce30c8dc | 28 | #include "signal-util.h" |
07630cea LP |
29 | #include "string-util.h" |
30 | #include "util.h" | |
3d20ed6d LP |
31 | |
32 | static bool arg_skip = false; | |
33 | static bool arg_force = false; | |
34 | ||
96287a49 | 35 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
059cb385 LP |
36 | |
37 | if (streq(key, "quotacheck.mode") && value) { | |
38 | ||
39 | if (streq(value, "auto")) | |
40 | arg_force = arg_skip = false; | |
41 | else if (streq(value, "force")) | |
42 | arg_force = true; | |
43 | else if (streq(value, "skip")) | |
44 | arg_skip = true; | |
45 | else | |
85013844 LP |
46 | log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value); |
47 | } | |
059cb385 | 48 | |
32f992a5 | 49 | #ifdef HAVE_SYSV_COMPAT |
059cb385 LP |
50 | else if (streq(key, "forcequotacheck") && !value) { |
51 | log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line."); | |
141a79f4 | 52 | arg_force = true; |
3d20ed6d | 53 | } |
141a79f4 ZJS |
54 | #endif |
55 | ||
3d20ed6d LP |
56 | return 0; |
57 | } | |
58 | ||
59 | static void test_files(void) { | |
85013844 | 60 | |
32f992a5 LP |
61 | #ifdef HAVE_SYSV_COMPAT |
62 | if (access("/forcequotacheck", F_OK) >= 0) { | |
63 | log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system."); | |
3d20ed6d | 64 | arg_force = true; |
32f992a5 | 65 | } |
3d20ed6d LP |
66 | #endif |
67 | } | |
68 | ||
69 | int main(int argc, char *argv[]) { | |
83374163 | 70 | |
3d20ed6d | 71 | static const char * const cmdline[] = { |
83374163 | 72 | QUOTACHECK, |
3d20ed6d LP |
73 | "-anug", |
74 | NULL | |
75 | }; | |
76 | ||
3d20ed6d | 77 | pid_t pid; |
b5884878 | 78 | int r; |
3d20ed6d LP |
79 | |
80 | if (argc > 1) { | |
81 | log_error("This program takes no arguments."); | |
82 | return EXIT_FAILURE; | |
83 | } | |
84 | ||
4cfa2c99 | 85 | log_set_target(LOG_TARGET_AUTO); |
3d20ed6d LP |
86 | log_parse_environment(); |
87 | log_open(); | |
88 | ||
4c12626c LP |
89 | umask(0022); |
90 | ||
d7f69e16 | 91 | r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); |
b5884878 | 92 | if (r < 0) |
da927ba9 | 93 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
b5884878 | 94 | |
3d20ed6d LP |
95 | test_files(); |
96 | ||
97 | if (!arg_force) { | |
3d20ed6d | 98 | if (arg_skip) |
83374163 | 99 | return EXIT_SUCCESS; |
3d20ed6d | 100 | |
2b583ce6 | 101 | if (access("/run/systemd/quotacheck", F_OK) < 0) |
83374163 | 102 | return EXIT_SUCCESS; |
3d20ed6d LP |
103 | } |
104 | ||
83374163 LP |
105 | pid = fork(); |
106 | if (pid < 0) { | |
56f64d95 | 107 | log_error_errno(errno, "fork(): %m"); |
83374163 | 108 | return EXIT_FAILURE; |
3d20ed6d | 109 | } else if (pid == 0) { |
ce30c8dc | 110 | |
3d20ed6d | 111 | /* Child */ |
ce30c8dc LP |
112 | |
113 | (void) reset_all_signal_handlers(); | |
114 | (void) reset_signal_mask(); | |
115 | assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); | |
116 | ||
3d20ed6d LP |
117 | execv(cmdline[0], (char**) cmdline); |
118 | _exit(1); /* Operational error */ | |
119 | } | |
120 | ||
820d3acf | 121 | r = wait_for_terminate_and_warn("quotacheck", pid, true); |
b5884878 LP |
122 | |
123 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
3d20ed6d | 124 | } |