*
* Copyright 2006 by Rob Landley <rob@landley.net>
*
- * Licensed under GPL version 2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
+//applet:IF_HALT(APPLET(halt, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_HALT(APPLET_ODDNAME(poweroff, halt, BB_DIR_SBIN, BB_SUID_DROP, poweroff))
+//applet:IF_HALT(APPLET_ODDNAME(reboot, halt, BB_DIR_SBIN, BB_SUID_DROP, reboot))
+
+//kbuild:lib-$(CONFIG_HALT) += halt.o
+
+//config:config HALT
+//config: bool "poweroff, halt, and reboot"
+//config: default y
+//config: help
+//config: Stop all processes and either halt, reboot, or power off the system.
+//config:
+//config:config FEATURE_CALL_TELINIT
+//config: bool "Call telinit on shutdown and reboot"
+//config: default y
+//config: depends on HALT && !INIT
+//config: help
+//config: Call an external program (normally telinit) to facilitate
+//config: a switch to a proper runlevel.
+//config:
+//config: This option is only available if you selected halt and friends,
+//config: but did not select init.
+//config:
+//config:config TELINIT_PATH
+//config: string "Path to telinit executable"
+//config: default "/sbin/telinit"
+//config: depends on FEATURE_CALL_TELINIT
+//config: help
+//config: When busybox halt and friends have to call external telinit
+//config: to facilitate proper shutdown, this path is to be used when
+//config: locating telinit executable.
+
+//usage:#define halt_trivial_usage
+//usage: "[-d DELAY] [-n] [-f]" IF_FEATURE_WTMP(" [-w]")
+//usage:#define halt_full_usage "\n\n"
+//usage: "Halt the system\n"
+//usage: "\nOptions:"
+//usage: "\n -d SEC Delay interval"
+//usage: "\n -n Do not sync"
+//usage: "\n -f Force (don't go through init)"
+//usage: IF_FEATURE_WTMP(
+//usage: "\n -w Only write a wtmp record"
+//usage: )
+//usage:
+//usage:#define poweroff_trivial_usage
+//usage: "[-d DELAY] [-n] [-f]"
+//usage:#define poweroff_full_usage "\n\n"
+//usage: "Halt and shut off power\n"
+//usage: "\nOptions:"
+//usage: "\n -d SEC Delay interval"
+//usage: "\n -n Do not sync"
+//usage: "\n -f Force (don't go through init)"
+//usage:
+//usage:#define reboot_trivial_usage
+//usage: "[-d DELAY] [-n] [-f]"
+//usage:#define reboot_full_usage "\n\n"
+//usage: "Reboot the system\n"
+//usage: "\nOptions:"
+//usage: "\n -d SEC Delay interval"
+//usage: "\n -n Do not sync"
+//usage: "\n -f Force (don't go through init)"
+
#include "libbb.h"
-#include <sys/reboot.h>
+#include "reboot.h"
#if ENABLE_FEATURE_WTMP
#include <sys/utsname.h>
-#include <utmp.h>
static void write_wtmp(void)
{
struct utmp utmp;
struct utsname uts;
- if (access(bb_path_wtmp_file, R_OK|W_OK) == -1) {
+ /* "man utmp" says wtmp file should *not* be created automagically */
+ /*if (access(bb_path_wtmp_file, R_OK|W_OK) == -1) {
close(creat(bb_path_wtmp_file, 0664));
- }
+ }*/
memset(&utmp, 0, sizeof(utmp));
utmp.ut_tv.tv_sec = time(NULL);
- safe_strncpy(utmp.ut_user, "shutdown", UT_NAMESIZE);
+ strcpy(utmp.ut_user, "shutdown"); /* it is wide enough */
utmp.ut_type = RUN_LVL;
- safe_strncpy(utmp.ut_id, "~~", sizeof(utmp.ut_id));
- safe_strncpy(utmp.ut_line, "~~", UT_LINESIZE);
- if (uname(&uts) == 0)
- safe_strncpy(utmp.ut_host, uts.release, sizeof(utmp.ut_host));
+ utmp.ut_id[0] = '~'; utmp.ut_id[1] = '~'; /* = strcpy(utmp.ut_id, "~~"); */
+ utmp.ut_line[0] = '~'; utmp.ut_line[1] = '~'; /* = strcpy(utmp.ut_line, "~~"); */
+ uname(&uts);
+ safe_strncpy(utmp.ut_host, uts.release, sizeof(utmp.ut_host));
updwtmp(bb_path_wtmp_file, &utmp);
-
}
#else
#define write_wtmp() ((void)0)
#endif
-#ifndef RB_HALT_SYSTEM
-#define RB_HALT_SYSTEM RB_HALT
-#endif
-
-#ifndef RB_POWER_OFF
-#define RB_POWER_OFF RB_POWERDOWN
-#endif
int halt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int halt_main(int argc UNUSED_PARAM, char **argv)
/* Parse and handle arguments */
opt_complementary = "d+"; /* -d N */
- /* We support -w even if !ENABLE_FEATURE_WTMP, in order
- * to not break scripts */
- flags = getopt32(argv, "d:nfw", &delay);
+ /* We support -w even if !ENABLE_FEATURE_WTMP,
+ * in order to not break scripts.
+ * -i (shut down network interfaces) is ignored.
+ */
+ flags = getopt32(argv, "d:nfwi", &delay);
sleep(delay);
//TODO: I tend to think that signalling linuxrc is wrong
// pity original author didn't comment on it...
if (ENABLE_FEATURE_INITRD) {
+ /* talk to linuxrc */
+ /* bbox init/linuxrc assumed */
pid_t *pidlist = find_pid_by_name("linuxrc");
if (pidlist[0] > 0)
rc = kill(pidlist[0], signals[which]);
if (ENABLE_FEATURE_CLEAN_UP)
free(pidlist);
}
- if (rc)
- rc = kill(1, signals[which]);
- } else
+ if (rc) {
+ /* talk to init */
+ if (!ENABLE_FEATURE_CALL_TELINIT) {
+ /* bbox init assumed */
+ rc = kill(1, signals[which]);
+ } else {
+ /* SysV style init assumed */
+ /* runlevels:
+ * 0 == shutdown
+ * 6 == reboot */
+ rc = execlp(CONFIG_TELINIT_PATH,
+ CONFIG_TELINIT_PATH,
+ which == 2 ? "6" : "0",
+ (char *)NULL
+ );
+ }
+ }
+ } else {
rc = reboot(magic[which]);
+ }
if (rc)
bb_perror_nomsg_and_die();
projects / oweals / busybox.git / blobdiff