Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 2 | /* |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 3 | * Poweroff reboot and halt, oh my. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 4 | * |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 5 | * Copyright 2006 by Rob Landley <rob@landley.net> |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 6 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 7 | * Licensed under GPLv2, see file LICENSE in this source tree. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
Denys Vlasenko | b9f2d9f | 2011-01-18 13:58:01 +0100 | [diff] [blame] | 10 | //applet:IF_HALT(APPLET(halt, BB_DIR_SBIN, BB_SUID_DROP)) |
| 11 | //applet:IF_HALT(APPLET_ODDNAME(poweroff, halt, BB_DIR_SBIN, BB_SUID_DROP, poweroff)) |
| 12 | //applet:IF_HALT(APPLET_ODDNAME(reboot, halt, BB_DIR_SBIN, BB_SUID_DROP, reboot)) |
Denys Vlasenko | b1db09b | 2010-10-12 13:47:15 +0200 | [diff] [blame] | 13 | |
| 14 | //kbuild:lib-$(CONFIG_HALT) += halt.o |
| 15 | |
| 16 | //config:config HALT |
| 17 | //config: bool "poweroff, halt, and reboot" |
| 18 | //config: default y |
| 19 | //config: help |
| 20 | //config: Stop all processes and either halt, reboot, or power off the system. |
| 21 | //config: |
| 22 | //config:config FEATURE_CALL_TELINIT |
| 23 | //config: bool "Call telinit on shutdown and reboot" |
| 24 | //config: default y |
| 25 | //config: depends on HALT && !INIT |
| 26 | //config: help |
| 27 | //config: Call an external program (normally telinit) to facilitate |
| 28 | //config: a switch to a proper runlevel. |
| 29 | //config: |
| 30 | //config: This option is only available if you selected halt and friends, |
| 31 | //config: but did not select init. |
| 32 | //config: |
| 33 | //config:config TELINIT_PATH |
| 34 | //config: string "Path to telinit executable" |
| 35 | //config: default "/sbin/telinit" |
| 36 | //config: depends on FEATURE_CALL_TELINIT |
| 37 | //config: help |
| 38 | //config: When busybox halt and friends have to call external telinit |
| 39 | //config: to facilitate proper shutdown, this path is to be used when |
| 40 | //config: locating telinit executable. |
| 41 | |
| 42 | //usage:#define halt_trivial_usage |
| 43 | //usage: "[-d DELAY] [-n] [-f]" IF_FEATURE_WTMP(" [-w]") |
| 44 | //usage:#define halt_full_usage "\n\n" |
| 45 | //usage: "Halt the system\n" |
Denys Vlasenko | b1db09b | 2010-10-12 13:47:15 +0200 | [diff] [blame] | 46 | //usage: "\n -d SEC Delay interval" |
| 47 | //usage: "\n -n Do not sync" |
| 48 | //usage: "\n -f Force (don't go through init)" |
| 49 | //usage: IF_FEATURE_WTMP( |
| 50 | //usage: "\n -w Only write a wtmp record" |
| 51 | //usage: ) |
| 52 | //usage: |
| 53 | //usage:#define poweroff_trivial_usage |
| 54 | //usage: "[-d DELAY] [-n] [-f]" |
| 55 | //usage:#define poweroff_full_usage "\n\n" |
| 56 | //usage: "Halt and shut off power\n" |
Denys Vlasenko | b1db09b | 2010-10-12 13:47:15 +0200 | [diff] [blame] | 57 | //usage: "\n -d SEC Delay interval" |
| 58 | //usage: "\n -n Do not sync" |
| 59 | //usage: "\n -f Force (don't go through init)" |
| 60 | //usage: |
| 61 | //usage:#define reboot_trivial_usage |
| 62 | //usage: "[-d DELAY] [-n] [-f]" |
| 63 | //usage:#define reboot_full_usage "\n\n" |
| 64 | //usage: "Reboot the system\n" |
Denys Vlasenko | b1db09b | 2010-10-12 13:47:15 +0200 | [diff] [blame] | 65 | //usage: "\n -d SEC Delay interval" |
| 66 | //usage: "\n -n Do not sync" |
| 67 | //usage: "\n -f Force (don't go through init)" |
| 68 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 69 | #include "libbb.h" |
Jeremie Koenig | 714674e | 2010-05-27 15:38:44 +0200 | [diff] [blame] | 70 | #include "reboot.h" |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 71 | |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 72 | #if ENABLE_FEATURE_WTMP |
| 73 | #include <sys/utsname.h> |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 74 | |
Denis Vlasenko | 9725daa | 2008-09-11 09:54:23 +0000 | [diff] [blame] | 75 | static void write_wtmp(void) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 76 | { |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 77 | struct utmp utmp; |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 78 | struct utsname uts; |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 79 | /* "man utmp" says wtmp file should *not* be created automagically */ |
| 80 | /*if (access(bb_path_wtmp_file, R_OK|W_OK) == -1) { |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 81 | close(creat(bb_path_wtmp_file, 0664)); |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 82 | }*/ |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 83 | memset(&utmp, 0, sizeof(utmp)); |
Bernhard Reutner-Fischer | 62d8503 | 2008-06-01 10:10:22 +0000 | [diff] [blame] | 84 | utmp.ut_tv.tv_sec = time(NULL); |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 85 | strcpy(utmp.ut_user, "shutdown"); /* it is wide enough */ |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 86 | utmp.ut_type = RUN_LVL; |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 87 | utmp.ut_id[0] = '~'; utmp.ut_id[1] = '~'; /* = strcpy(utmp.ut_id, "~~"); */ |
| 88 | utmp.ut_line[0] = '~'; utmp.ut_line[1] = '~'; /* = strcpy(utmp.ut_line, "~~"); */ |
| 89 | uname(&uts); |
| 90 | safe_strncpy(utmp.ut_host, uts.release, sizeof(utmp.ut_host)); |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 91 | updwtmp(bb_path_wtmp_file, &utmp); |
Denis Vlasenko | 9725daa | 2008-09-11 09:54:23 +0000 | [diff] [blame] | 92 | } |
| 93 | #else |
| 94 | #define write_wtmp() ((void)0) |
| 95 | #endif |
| 96 | |
Denis Vlasenko | 9725daa | 2008-09-11 09:54:23 +0000 | [diff] [blame] | 97 | |
| 98 | int halt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 99 | int halt_main(int argc UNUSED_PARAM, char **argv) |
| 100 | { |
| 101 | static const int magic[] = { |
| 102 | RB_HALT_SYSTEM, |
| 103 | RB_POWER_OFF, |
Denis Vlasenko | ea7c9b3 | 2008-09-25 10:39:10 +0000 | [diff] [blame] | 104 | RB_AUTOBOOT |
Denis Vlasenko | 9725daa | 2008-09-11 09:54:23 +0000 | [diff] [blame] | 105 | }; |
| 106 | static const smallint signals[] = { SIGUSR1, SIGUSR2, SIGTERM }; |
| 107 | |
| 108 | int delay = 0; |
| 109 | int which, flags, rc; |
| 110 | |
| 111 | /* Figure out which applet we're running */ |
| 112 | for (which = 0; "hpr"[which] != applet_name[0]; which++) |
| 113 | continue; |
| 114 | |
| 115 | /* Parse and handle arguments */ |
| 116 | opt_complementary = "d+"; /* -d N */ |
Denis Vlasenko | e12c902 | 2009-04-12 15:59:35 +0000 | [diff] [blame] | 117 | /* We support -w even if !ENABLE_FEATURE_WTMP, |
| 118 | * in order to not break scripts. |
| 119 | * -i (shut down network interfaces) is ignored. |
| 120 | */ |
| 121 | flags = getopt32(argv, "d:nfwi", &delay); |
Denis Vlasenko | 9725daa | 2008-09-11 09:54:23 +0000 | [diff] [blame] | 122 | |
| 123 | sleep(delay); |
| 124 | |
| 125 | write_wtmp(); |
| 126 | |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 127 | if (flags & 8) /* -w */ |
Bernhard Reutner-Fischer | ef9876a | 2008-07-21 11:30:51 +0000 | [diff] [blame] | 128 | return EXIT_SUCCESS; |
Bernhard Reutner-Fischer | d93179f | 2008-09-01 15:24:52 +0000 | [diff] [blame] | 129 | |
Denis Vlasenko | 680b86a | 2008-01-24 02:28:00 +0000 | [diff] [blame] | 130 | if (!(flags & 2)) /* no -n */ |
| 131 | sync(); |
Bernhard Reutner-Fischer | e15d757 | 2006-06-02 20:56:16 +0000 | [diff] [blame] | 132 | |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 133 | /* Perform action. */ |
Denis Vlasenko | 1e28f61 | 2008-08-03 18:43:45 +0000 | [diff] [blame] | 134 | rc = 1; |
| 135 | if (!(flags & 4)) { /* no -f */ |
| 136 | //TODO: I tend to think that signalling linuxrc is wrong |
| 137 | // pity original author didn't comment on it... |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 138 | if (ENABLE_FEATURE_INITRD) { |
Alexander Shishkin | 97af2ff | 2009-07-27 02:49:35 +0200 | [diff] [blame] | 139 | /* talk to linuxrc */ |
| 140 | /* bbox init/linuxrc assumed */ |
Denis Vlasenko | 35fb512 | 2006-11-01 09:16:49 +0000 | [diff] [blame] | 141 | pid_t *pidlist = find_pid_by_name("linuxrc"); |
| 142 | if (pidlist[0] > 0) |
| 143 | rc = kill(pidlist[0], signals[which]); |
| 144 | if (ENABLE_FEATURE_CLEAN_UP) |
| 145 | free(pidlist); |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 146 | } |
Denis Vlasenko | e12c902 | 2009-04-12 15:59:35 +0000 | [diff] [blame] | 147 | if (rc) { |
Alexander Shishkin | 97af2ff | 2009-07-27 02:49:35 +0200 | [diff] [blame] | 148 | /* talk to init */ |
| 149 | if (!ENABLE_FEATURE_CALL_TELINIT) { |
| 150 | /* bbox init assumed */ |
| 151 | rc = kill(1, signals[which]); |
| 152 | } else { |
| 153 | /* SysV style init assumed */ |
| 154 | /* runlevels: |
| 155 | * 0 == shutdown |
| 156 | * 6 == reboot */ |
Denys Vlasenko | 104e014 | 2011-07-03 01:46:02 +0200 | [diff] [blame] | 157 | execlp(CONFIG_TELINIT_PATH, |
Alexander Shishkin | 97af2ff | 2009-07-27 02:49:35 +0200 | [diff] [blame] | 158 | CONFIG_TELINIT_PATH, |
| 159 | which == 2 ? "6" : "0", |
| 160 | (char *)NULL |
| 161 | ); |
Denys Vlasenko | db43d3d | 2011-07-08 06:23:08 +0200 | [diff] [blame] | 162 | bb_perror_msg_and_die("can't execute '%s'", |
Denys Vlasenko | 104e014 | 2011-07-03 01:46:02 +0200 | [diff] [blame] | 163 | CONFIG_TELINIT_PATH); |
Alexander Shishkin | 97af2ff | 2009-07-27 02:49:35 +0200 | [diff] [blame] | 164 | } |
Denis Vlasenko | e12c902 | 2009-04-12 15:59:35 +0000 | [diff] [blame] | 165 | } |
| 166 | } else { |
Denis Vlasenko | 35fb512 | 2006-11-01 09:16:49 +0000 | [diff] [blame] | 167 | rc = reboot(magic[which]); |
Denis Vlasenko | e12c902 | 2009-04-12 15:59:35 +0000 | [diff] [blame] | 168 | } |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 169 | |
Denis Vlasenko | 35fb512 | 2006-11-01 09:16:49 +0000 | [diff] [blame] | 170 | if (rc) |
Denis Vlasenko | fb1a23d | 2009-03-07 01:54:24 +0000 | [diff] [blame] | 171 | bb_perror_nomsg_and_die(); |
Rob Landley | 6461291 | 2006-01-30 08:31:37 +0000 | [diff] [blame] | 172 | return rc; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 173 | } |