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Commit | Line | Data |
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a032b68d | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
663996b3 | 2 | |
663996b3 | 3 | #include <errno.h> |
db2df898 MP |
4 | #include <stdbool.h> |
5 | #include <stdio.h> | |
86f210e9 | 6 | #include <sys/prctl.h> |
bb4f798a MB |
7 | #include <sys/stat.h> |
8 | #include <sys/types.h> | |
db2df898 | 9 | #include <unistd.h> |
663996b3 | 10 | |
6e866b33 | 11 | #include "main-func.h" |
db2df898 | 12 | #include "proc-cmdline.h" |
e3bff60a | 13 | #include "process-util.h" |
86f210e9 | 14 | #include "signal-util.h" |
db2df898 MP |
15 | #include "string-util.h" |
16 | #include "util.h" | |
663996b3 MS |
17 | |
18 | static bool arg_skip = false; | |
19 | static bool arg_force = false; | |
20 | ||
8a584da2 | 21 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
663996b3 | 22 | |
2897b343 MP |
23 | if (streq(key, "quotacheck.mode")) { |
24 | ||
25 | if (proc_cmdline_value_missing(key, value)) | |
26 | return 0; | |
663996b3 | 27 | |
60f067b4 | 28 | if (streq(value, "auto")) |
663996b3 | 29 | arg_force = arg_skip = false; |
60f067b4 | 30 | else if (streq(value, "force")) |
663996b3 | 31 | arg_force = true; |
60f067b4 | 32 | else if (streq(value, "skip")) |
663996b3 | 33 | arg_skip = true; |
60f067b4 | 34 | else |
e842803a MB |
35 | log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value); |
36 | } | |
60f067b4 | 37 | |
f5e65279 | 38 | #if HAVE_SYSV_COMPAT |
60f067b4 JS |
39 | else if (streq(key, "forcequotacheck") && !value) { |
40 | log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line."); | |
41 | arg_force = true; | |
663996b3 | 42 | } |
60f067b4 JS |
43 | #endif |
44 | ||
663996b3 MS |
45 | return 0; |
46 | } | |
47 | ||
48 | static void test_files(void) { | |
e842803a | 49 | |
f5e65279 | 50 | #if HAVE_SYSV_COMPAT |
663996b3 MS |
51 | if (access("/forcequotacheck", F_OK) >= 0) { |
52 | log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system."); | |
53 | arg_force = true; | |
54 | } | |
55 | #endif | |
56 | } | |
57 | ||
6e866b33 | 58 | static int run(int argc, char *argv[]) { |
f47781d8 | 59 | int r; |
663996b3 | 60 | |
3a6ce677 | 61 | log_setup(); |
663996b3 | 62 | |
6e866b33 MB |
63 | if (argc > 1) |
64 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
65 | "This program takes no arguments."); | |
663996b3 MS |
66 | |
67 | umask(0022); | |
68 | ||
2897b343 | 69 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
f47781d8 MP |
70 | if (r < 0) |
71 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
72 | ||
663996b3 MS |
73 | test_files(); |
74 | ||
75 | if (!arg_force) { | |
76 | if (arg_skip) | |
6e866b33 | 77 | return 0; |
663996b3 MS |
78 | |
79 | if (access("/run/systemd/quotacheck", F_OK) < 0) | |
6e866b33 | 80 | return 0; |
663996b3 MS |
81 | } |
82 | ||
6e866b33 | 83 | r = safe_fork("(quotacheck)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_RLIMIT_NOFILE_SAFE|FORK_WAIT|FORK_LOG, NULL); |
1d42b86d | 84 | if (r < 0) |
6e866b33 | 85 | return r; |
1d42b86d MB |
86 | if (r == 0) { |
87 | static const char * const cmdline[] = { | |
88 | QUOTACHECK, | |
89 | "-anug", | |
90 | NULL | |
91 | }; | |
86f210e9 | 92 | |
663996b3 | 93 | /* Child */ |
86f210e9 | 94 | |
663996b3 | 95 | execv(cmdline[0], (char**) cmdline); |
1d42b86d | 96 | _exit(EXIT_FAILURE); /* Operational error */ |
663996b3 MS |
97 | } |
98 | ||
6e866b33 | 99 | return 0; |
663996b3 | 100 | } |
6e866b33 MB |
101 | |
102 | DEFINE_MAIN_FUNCTION(run); |