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Commit | Line | Data |
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6dbe3af9 KZ |
1 | /* |
2 | * ctrlaltdel.c - Set the function of the Ctrl-Alt-Del combination | |
3 | * Created 4-Jul-92 by Peter Orbaek <poe@daimi.aau.dk> | |
b50945d4 | 4 | * 1999-02-22 Arkadiusz MiĆkiewicz <misiek@pld.ORG.PL> |
7eda085c | 5 | * - added Native Language Support |
6dbe3af9 KZ |
6 | */ |
7 | ||
028f7ed8 | 8 | #include <getopt.h> |
6dbe3af9 | 9 | #include <stdio.h> |
66ee8158 | 10 | #include <stdlib.h> |
6dbe3af9 | 11 | #include <string.h> |
0c3e5202 | 12 | #include <errno.h> |
5c36a0eb | 13 | #include "linux_reboot.h" |
7eda085c | 14 | #include "nls.h" |
eb76ca98 | 15 | #include "c.h" |
efb8854f | 16 | #include "closestream.h" |
82cac348 | 17 | #include "pathnames.h" |
741d478e | 18 | #include "path.h" |
6dbe3af9 | 19 | |
028f7ed8 | 20 | static void __attribute__ ((__noreturn__)) usage(FILE * out) |
0c3e5202 | 21 | { |
028f7ed8 | 22 | fprintf(out, USAGE_HEADER); |
b73142b9 | 23 | fprintf(out, _(" %s hard|soft\n"), program_invocation_short_name); |
451dbcfa BS |
24 | |
25 | fprintf(out, USAGE_SEPARATOR); | |
8137c98f | 26 | fprintf(out, _("Set the function of the Ctrl-Alt-Del combination.\n")); |
451dbcfa | 27 | |
028f7ed8 SK |
28 | fprintf(out, USAGE_OPTIONS); |
29 | fprintf(out, USAGE_HELP); | |
30 | fprintf(out, USAGE_VERSION); | |
6f162034 | 31 | fprintf(out, USAGE_MAN_TAIL("ctrlaltdel(8)")); |
028f7ed8 SK |
32 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); |
33 | } | |
34 | ||
82cac348 SK |
35 | static int get_cad(void) |
36 | { | |
741d478e | 37 | uint64_t val = path_read_u64(_PATH_PROC_CTRL_ALT_DEL); |
82cac348 | 38 | |
82cac348 SK |
39 | switch (val) { |
40 | case 0: | |
41 | fputs("soft\n", stdout); | |
42 | break; | |
43 | case 1: | |
44 | fputs("hard\n", stdout); | |
45 | break; | |
46 | default: | |
47 | printf("%s hard\n", _("implicit")); | |
741d478e | 48 | warnx(_("unexpected value in %s: %ju"), _PATH_PROC_CTRL_ALT_DEL, val); |
82cac348 SK |
49 | return EXIT_FAILURE; |
50 | } | |
51 | return EXIT_SUCCESS; | |
52 | } | |
53 | ||
54 | static int set_cad(const char *arg) | |
028f7ed8 | 55 | { |
8137c98f | 56 | unsigned int cmd; |
82cac348 SK |
57 | |
58 | if (geteuid()) { | |
59 | warnx(_("You must be root to set the Ctrl-Alt-Del behavior")); | |
60 | return EXIT_FAILURE; | |
61 | } | |
62 | if (!strcmp("hard", arg)) | |
63 | cmd = LINUX_REBOOT_CMD_CAD_ON; | |
64 | else if (!strcmp("soft", arg)) | |
65 | cmd = LINUX_REBOOT_CMD_CAD_OFF; | |
66 | else { | |
67 | warnx(_("unknown argument: %s"), arg); | |
68 | return EXIT_FAILURE; | |
69 | } | |
70 | if (my_reboot(cmd) < 0) { | |
71 | warnx("reboot"); | |
72 | return EXIT_FAILURE; | |
73 | } | |
74 | return EXIT_SUCCESS; | |
75 | } | |
76 | ||
77 | int main(int argc, char **argv) | |
78 | { | |
79 | int ch, ret; | |
028f7ed8 SK |
80 | static const struct option longopts[] = { |
81 | {"version", no_argument, NULL, 'V'}, | |
82 | {"help", no_argument, NULL, 'h'}, | |
83 | {NULL, 0, NULL, 0} | |
84 | }; | |
85 | ||
7eda085c KZ |
86 | setlocale(LC_ALL, ""); |
87 | bindtextdomain(PACKAGE, LOCALEDIR); | |
88 | textdomain(PACKAGE); | |
efb8854f | 89 | atexit(close_stdout); |
6dbe3af9 | 90 | |
028f7ed8 SK |
91 | while ((ch = getopt_long(argc, argv, "Vh", longopts, NULL)) != -1) |
92 | switch (ch) { | |
93 | case 'V': | |
94 | printf(UTIL_LINUX_VERSION); | |
95 | return EXIT_SUCCESS; | |
96 | case 'h': | |
97 | usage(stdout); | |
98 | default: | |
99 | usage(stderr); | |
100 | } | |
101 | ||
8137c98f | 102 | if (argc < 2) |
82cac348 | 103 | ret = get_cad(); |
8137c98f | 104 | else |
82cac348 SK |
105 | ret = set_cad(argv[1]); |
106 | return ret; | |
0c3e5202 | 107 | } |