Index: head/sbin/reboot/reboot.8 =================================================================== --- head/sbin/reboot/reboot.8 (revision 53522) +++ head/sbin/reboot/reboot.8 (revision 53523) @@ -1,110 +1,117 @@ .\" Copyright (c) 1990, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the University of .\" California, Berkeley and its contributors. .\" 4. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)reboot.8 8.1 (Berkeley) 6/9/93 .\" $FreeBSD$ .\" .Dd June 9, 1993 .Dt REBOOT 8 .Os .Sh NAME .Nm reboot , .Nm halt .Nd stopping and restarting the system .Sh SYNOPSIS .Nm halt .Op Fl nqp .Nm reboot -.Op Fl nqp +.Op Fl dnqp .Nm fasthalt .Op Fl nqp .Nm fastboot -.Op Fl nqp +.Op Fl dnqp .Sh DESCRIPTION The .Nm halt and .Nm utilities flush the file system cache to disk, send all running processes a .Dv SIGTERM (and subsequently a .Dv SIGKILL ) and, respectively, halt or restart the system. The action is logged, including entering a shutdown record into the .Xr wtmp 5 file. .Pp The options are as follows: .Bl -tag -width indent +.It Fl d +The system is requested to create a crash dump. This option is +supported only when rebooting, and it has no effect unless a dump +device has previously been specified with +.Xr dumpon 8 . .It Fl n The file system cache is not flushed. This option should probably not be used. .It Fl q The system is halted or restarted quickly and ungracefully, and only the flushing of the file system cache is performed (if the .Fl n is not specified). This option should probably not be used. .It Fl p The system will turn off the power if it can. This is of course likely to make .Nm rather similar to .Nm halt . .El .Pp The .Nm fasthalt and .Nm fastboot utilities are nothing more than aliases for the .Nm halt and .Nm utilities. .Pp Normally, the .Xr shutdown 8 utility is used when the system needs to be halted or restarted, giving users advance warning of their impending doom and cleanly terminating specific programs. .Sh SEE ALSO .Xr wtmp 5 , .Xr boot 8 , +.Xr dumpon 8 , +.Xr savecore 8 , .Xr shutdown 8 , .Xr sync 8 .Sh HISTORY A .Nm command appeared in .At v6 . Index: head/sbin/reboot/reboot.c =================================================================== --- head/sbin/reboot/reboot.c (revision 53522) +++ head/sbin/reboot/reboot.c (revision 53523) @@ -1,186 +1,192 @@ /* * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1980, 1986, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)reboot.c 8.1 (Berkeley) 6/5/93"; #endif static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include void usage __P((void)); int dohalt; int main(argc, argv) int argc; char *argv[]; { register int i; struct passwd *pw; int ch, howto, lflag, nflag, qflag, pflag, sverrno; char *p, *user; if (strstr((p = rindex(*argv, '/')) ? p + 1 : *argv, "halt")) { dohalt = 1; howto = RB_HALT; } else howto = 0; lflag = nflag = qflag = 0; - while ((ch = getopt(argc, argv, "lnpq")) != -1) + while ((ch = getopt(argc, argv, "dlnpq")) != -1) switch(ch) { + case 'd': + howto |= RB_DUMP; + break; case 'l': /* Undocumented; used by shutdown. */ lflag = 1; break; case 'n': nflag = 1; howto |= RB_NOSYNC; break; case 'p': pflag = 1; howto |= (RB_POWEROFF | RB_HALT); break; case 'q': qflag = 1; break; case '?': default: usage(); } argc -= optind; argv += optind; + if ((howto & (RB_DUMP | RB_HALT)) == (RB_DUMP | RB_HALT)) + errx(1, "cannot dump (-d) when halting; must reboot instead"); if (geteuid()) { errno = EPERM; err(1, NULL); } if (qflag) { reboot(howto); err(1, NULL); } /* Log the reboot. */ if (!lflag) { if ((user = getlogin()) == NULL) user = (pw = getpwuid(getuid())) ? pw->pw_name : "???"; if (dohalt) { openlog("halt", 0, LOG_AUTH | LOG_CONS); syslog(LOG_CRIT, "halted by %s", user); } else { openlog("reboot", 0, LOG_AUTH | LOG_CONS); syslog(LOG_CRIT, "rebooted by %s", user); } } logwtmp("~", "shutdown", ""); /* * Do a sync early on, so disks start transfers while we're off * killing processes. Don't worry about writes done before the * processes die, the reboot system call syncs the disks. */ if (!nflag) sync(); /* Just stop init -- if we fail, we'll restart it. */ if (kill(1, SIGTSTP) == -1) err(1, "SIGTSTP init"); /* Ignore the SIGHUP we get when our parent shell dies. */ (void)signal(SIGHUP, SIG_IGN); /* Send a SIGTERM first, a chance to save the buffers. */ if (kill(-1, SIGTERM) == -1) err(1, "SIGTERM processes"); /* * After the processes receive the signal, start the rest of the * buffers on their way. Wait 5 seconds between the SIGTERM and * the SIGKILL to give everybody a chance. */ sleep(2); if (!nflag) sync(); sleep(3); for (i = 1;; ++i) { if (kill(-1, SIGKILL) == -1) { if (errno == ESRCH) break; goto restart; } if (i > 5) { (void)fprintf(stderr, "WARNING: some process(es) wouldn't die\n"); break; } (void)sleep(2 * i); } reboot(howto); /* FALLTHROUGH */ restart: sverrno = errno; errx(1, "%s%s", kill(1, SIGHUP) == -1 ? "(can't restart init): " : "", strerror(sverrno)); /* NOTREACHED */ } void usage() { - (void)fprintf(stderr, "usage: %s [-npq]\n", dohalt ? "halt" : "reboot"); + (void)fprintf(stderr, "usage: %s [-dnpq]\n", + dohalt ? "halt" : "reboot"); exit(1); }