1 /* vi: set sw=4 ts=4: */
3 * Poweroff reboot and halt, oh my.
5 * Copyright 2006 by Rob Landley <rob@landley.net>
7 * Licensed under GPL version 2, see file LICENSE in this tarball for details.
11 #include <sys/reboot.h>
13 #if ENABLE_FEATURE_WTMP
14 #include <sys/utsname.h>
17 static void write_wtmp(void)
21 /* "man utmp" says wtmp file should *not* be created automagically */
22 /*if (access(bb_path_wtmp_file, R_OK|W_OK) == -1) {
23 close(creat(bb_path_wtmp_file, 0664));
25 memset(&utmp, 0, sizeof(utmp));
26 utmp.ut_tv.tv_sec = time(NULL);
27 strcpy(utmp.ut_user, "shutdown"); /* it is wide enough */
28 utmp.ut_type = RUN_LVL;
29 utmp.ut_id[0] = '~'; utmp.ut_id[1] = '~'; /* = strcpy(utmp.ut_id, "~~"); */
30 utmp.ut_line[0] = '~'; utmp.ut_line[1] = '~'; /* = strcpy(utmp.ut_line, "~~"); */
32 safe_strncpy(utmp.ut_host, uts.release, sizeof(utmp.ut_host));
33 updwtmp(bb_path_wtmp_file, &utmp);
36 #define write_wtmp() ((void)0)
39 #ifndef RB_HALT_SYSTEM
40 #define RB_HALT_SYSTEM RB_HALT
44 /* Stop system and switch power off if possible. */
45 # define RB_POWERDOWN 0x4321fedc
48 # define RB_POWER_OFF RB_POWERDOWN
52 int halt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
53 int halt_main(int argc UNUSED_PARAM, char **argv)
55 static const int magic[] = {
60 static const smallint signals[] = { SIGUSR1, SIGUSR2, SIGTERM };
65 /* Figure out which applet we're running */
66 for (which = 0; "hpr"[which] != applet_name[0]; which++)
69 /* Parse and handle arguments */
70 opt_complementary = "d+"; /* -d N */
71 /* We support -w even if !ENABLE_FEATURE_WTMP,
72 * in order to not break scripts.
73 * -i (shut down network interfaces) is ignored.
75 flags = getopt32(argv, "d:nfwi", &delay);
81 if (flags & 8) /* -w */
84 if (!(flags & 2)) /* no -n */
89 if (!(flags & 4)) { /* no -f */
90 //TODO: I tend to think that signalling linuxrc is wrong
91 // pity original author didn't comment on it...
92 if (ENABLE_FEATURE_INITRD) {
94 /* bbox init/linuxrc assumed */
95 pid_t *pidlist = find_pid_by_name("linuxrc");
97 rc = kill(pidlist[0], signals[which]);
98 if (ENABLE_FEATURE_CLEAN_UP)
103 if (!ENABLE_FEATURE_CALL_TELINIT) {
104 /* bbox init assumed */
105 rc = kill(1, signals[which]);
107 /* SysV style init assumed */
111 rc = execlp(CONFIG_TELINIT_PATH,
113 which == 2 ? "6" : "0",
119 rc = reboot(magic[which]);
123 bb_perror_nomsg_and_die();