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Commit | Line | Data |
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52ad194e | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
663996b3 MS |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
663996b3 | 21 | #include <errno.h> |
db2df898 MP |
22 | #include <stdbool.h> |
23 | #include <stdio.h> | |
86f210e9 | 24 | #include <sys/prctl.h> |
db2df898 | 25 | #include <unistd.h> |
663996b3 | 26 | |
db2df898 | 27 | #include "proc-cmdline.h" |
e3bff60a | 28 | #include "process-util.h" |
86f210e9 | 29 | #include "signal-util.h" |
db2df898 MP |
30 | #include "string-util.h" |
31 | #include "util.h" | |
663996b3 MS |
32 | |
33 | static bool arg_skip = false; | |
34 | static bool arg_force = false; | |
35 | ||
8a584da2 | 36 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
663996b3 | 37 | |
2897b343 MP |
38 | if (streq(key, "quotacheck.mode")) { |
39 | ||
40 | if (proc_cmdline_value_missing(key, value)) | |
41 | return 0; | |
663996b3 | 42 | |
60f067b4 | 43 | if (streq(value, "auto")) |
663996b3 | 44 | arg_force = arg_skip = false; |
60f067b4 | 45 | else if (streq(value, "force")) |
663996b3 | 46 | arg_force = true; |
60f067b4 | 47 | else if (streq(value, "skip")) |
663996b3 | 48 | arg_skip = true; |
60f067b4 | 49 | else |
e842803a MB |
50 | log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value); |
51 | } | |
60f067b4 | 52 | |
f5e65279 | 53 | #if HAVE_SYSV_COMPAT |
60f067b4 JS |
54 | else if (streq(key, "forcequotacheck") && !value) { |
55 | log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line."); | |
56 | arg_force = true; | |
663996b3 | 57 | } |
60f067b4 JS |
58 | #endif |
59 | ||
663996b3 MS |
60 | return 0; |
61 | } | |
62 | ||
63 | static void test_files(void) { | |
e842803a | 64 | |
f5e65279 | 65 | #if HAVE_SYSV_COMPAT |
663996b3 MS |
66 | if (access("/forcequotacheck", F_OK) >= 0) { |
67 | log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system."); | |
68 | arg_force = true; | |
69 | } | |
70 | #endif | |
71 | } | |
72 | ||
73 | int main(int argc, char *argv[]) { | |
74 | ||
75 | static const char * const cmdline[] = { | |
76 | QUOTACHECK, | |
77 | "-anug", | |
78 | NULL | |
79 | }; | |
80 | ||
81 | pid_t pid; | |
f47781d8 | 82 | int r; |
663996b3 MS |
83 | |
84 | if (argc > 1) { | |
85 | log_error("This program takes no arguments."); | |
86 | return EXIT_FAILURE; | |
87 | } | |
88 | ||
89 | log_set_target(LOG_TARGET_AUTO); | |
90 | log_parse_environment(); | |
91 | log_open(); | |
92 | ||
93 | umask(0022); | |
94 | ||
2897b343 | 95 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
f47781d8 MP |
96 | if (r < 0) |
97 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
98 | ||
663996b3 MS |
99 | test_files(); |
100 | ||
101 | if (!arg_force) { | |
102 | if (arg_skip) | |
103 | return EXIT_SUCCESS; | |
104 | ||
105 | if (access("/run/systemd/quotacheck", F_OK) < 0) | |
106 | return EXIT_SUCCESS; | |
107 | } | |
108 | ||
109 | pid = fork(); | |
110 | if (pid < 0) { | |
2897b343 MP |
111 | r = log_error_errno(errno, "fork(): %m"); |
112 | goto finish; | |
113 | } | |
114 | if (pid == 0) { | |
86f210e9 | 115 | |
663996b3 | 116 | /* Child */ |
86f210e9 MP |
117 | |
118 | (void) reset_all_signal_handlers(); | |
119 | (void) reset_signal_mask(); | |
120 | assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); | |
121 | ||
663996b3 MS |
122 | execv(cmdline[0], (char**) cmdline); |
123 | _exit(1); /* Operational error */ | |
124 | } | |
125 | ||
f47781d8 MP |
126 | r = wait_for_terminate_and_warn("quotacheck", pid, true); |
127 | ||
2897b343 | 128 | finish: |
f47781d8 | 129 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
663996b3 | 130 | } |