11558Srgrimes/* 21558Srgrimes * Copyright (c) 1988, 1990, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * Redistribution and use in source and binary forms, with or without 61558Srgrimes * modification, are permitted provided that the following conditions 71558Srgrimes * are met: 81558Srgrimes * 1. Redistributions of source code must retain the above copyright 91558Srgrimes * notice, this list of conditions and the following disclaimer. 101558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111558Srgrimes * notice, this list of conditions and the following disclaimer in the 121558Srgrimes * documentation and/or other materials provided with the distribution. 131558Srgrimes * 4. Neither the name of the University nor the names of its contributors 141558Srgrimes * may be used to endorse or promote products derived from this software 151558Srgrimes * without specific prior written permission. 161558Srgrimes * 171558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271558Srgrimes * SUCH DAMAGE. 281558Srgrimes */ 291558Srgrimes 30114589Sobrien#if 0 311558Srgrimes#ifndef lint 3238036Scharnierstatic const char copyright[] = 331558Srgrimes"@(#) Copyright (c) 1988, 1990, 1993\n\ 341558Srgrimes The Regents of the University of California. All rights reserved.\n"; 351558Srgrimes#endif /* not lint */ 361558Srgrimes 371558Srgrimes#ifndef lint 3841684Sbdestatic char sccsid[] = "@(#)shutdown.c 8.4 (Berkeley) 4/28/95"; 39114589Sobrien#endif /* not lint */ 4038036Scharnier#endif 41114589Sobrien#include <sys/cdefs.h> 42114589Sobrien__FBSDID("$FreeBSD: releng/10.3/sbin/shutdown/shutdown.c 238968 2012-08-01 09:10:21Z des $"); 431558Srgrimes 441558Srgrimes#include <sys/param.h> 451558Srgrimes#include <sys/time.h> 461558Srgrimes#include <sys/resource.h> 471558Srgrimes#include <sys/syslog.h> 481558Srgrimes 491558Srgrimes#include <ctype.h> 5038036Scharnier#include <err.h> 511558Srgrimes#include <fcntl.h> 52114763Sobrien#include <paths.h> 531558Srgrimes#include <pwd.h> 541558Srgrimes#include <setjmp.h> 551558Srgrimes#include <signal.h> 561558Srgrimes#include <stdio.h> 571558Srgrimes#include <stdlib.h> 581558Srgrimes#include <string.h> 591558Srgrimes#include <unistd.h> 601558Srgrimes 611558Srgrimes#ifdef DEBUG 621558Srgrimes#undef _PATH_NOLOGIN 631558Srgrimes#define _PATH_NOLOGIN "./nologin" 641558Srgrimes#endif 651558Srgrimes 661558Srgrimes#define H *60*60 671558Srgrimes#define M *60 681558Srgrimes#define S *1 691558Srgrimes#define NOLOG_TIME 5*60 70227081Sedstatic struct interval { 711558Srgrimes int timeleft, timetowait; 721558Srgrimes} tlist[] = { 7332399Salex { 10 H, 5 H }, 7432399Salex { 5 H, 3 H }, 7532399Salex { 2 H, 1 H }, 7632399Salex { 1 H, 30 M }, 7732399Salex { 30 M, 10 M }, 7832399Salex { 20 M, 10 M }, 7932399Salex { 10 M, 5 M }, 8032399Salex { 5 M, 3 M }, 8132399Salex { 2 M, 1 M }, 8232399Salex { 1 M, 30 S }, 8332399Salex { 30 S, 30 S }, 8432399Salex { 0 , 0 } 851558Srgrimes}; 861558Srgrimes#undef H 871558Srgrimes#undef M 881558Srgrimes#undef S 891558Srgrimes 901558Srgrimesstatic time_t offset, shuttime; 9148078Srustatic int dohalt, dopower, doreboot, killflg, mbuflen, oflag; 9279749Sddstatic char mbuf[BUFSIZ]; 9379749Sddstatic const char *nosync, *whom; 941558Srgrimes 95197560Sdelphijstatic void badtime(void); 96238968Sdesstatic void die_you_gravy_sucking_pig_dog(void); 97197560Sdelphijstatic void finish(int); 98197560Sdelphijstatic void getoffset(char *); 99197560Sdelphijstatic void loop(void); 100197560Sdelphijstatic void nolog(void); 101197560Sdelphijstatic void timeout(int); 102197560Sdelphijstatic void timewarn(int); 103197560Sdelphijstatic void usage(const char *); 1041558Srgrimes 105140796Sdelphijextern const char **environ; 106140796Sdelphij 1071558Srgrimesint 108140796Sdelphijmain(int argc, char **argv) 1091558Srgrimes{ 11079749Sdd char *p, *endp; 1111558Srgrimes struct passwd *pw; 1121558Srgrimes int arglen, ch, len, readstdin; 1131558Srgrimes 1141558Srgrimes#ifndef DEBUG 11526737Scharnier if (geteuid()) 11626737Scharnier errx(1, "NOT super-user"); 1171558Srgrimes#endif 118216823Spjd 1191558Srgrimes nosync = NULL; 1201558Srgrimes readstdin = 0; 121216823Spjd 122216823Spjd /* 123216823Spjd * Test for the special case where the utility is called as 124216823Spjd * "poweroff", for which it runs 'shutdown -p now'. 125216823Spjd */ 126229403Sed if ((p = strrchr(argv[0], '/')) == NULL) 127216823Spjd p = argv[0]; 128216823Spjd else 129216823Spjd ++p; 130216823Spjd if (strcmp(p, "poweroff") == 0) { 131216823Spjd if (getopt(argc, argv, "") != -1) 132216823Spjd usage((char *)NULL); 133216823Spjd argc -= optind; 134216823Spjd argv += optind; 135216823Spjd if (argc != 0) 136216823Spjd usage((char *)NULL); 137216823Spjd dopower = 1; 138216823Spjd offset = 0; 139216823Spjd (void)time(&shuttime); 140216823Spjd goto poweroff; 141216823Spjd } 142216823Spjd 14348078Sru while ((ch = getopt(argc, argv, "-hknopr")) != -1) 1441558Srgrimes switch (ch) { 1451558Srgrimes case '-': 1461558Srgrimes readstdin = 1; 1471558Srgrimes break; 1481558Srgrimes case 'h': 1491558Srgrimes dohalt = 1; 1501558Srgrimes break; 1511558Srgrimes case 'k': 1521558Srgrimes killflg = 1; 1531558Srgrimes break; 1541558Srgrimes case 'n': 1551558Srgrimes nosync = "-n"; 1561558Srgrimes break; 15748078Sru case 'o': 15848078Sru oflag = 1; 15948078Sru break; 16041666Smsmith case 'p': 16141666Smsmith dopower = 1; 16241666Smsmith break; 1631558Srgrimes case 'r': 1641558Srgrimes doreboot = 1; 1651558Srgrimes break; 1661558Srgrimes case '?': 1671558Srgrimes default: 16848078Sru usage((char *)NULL); 1691558Srgrimes } 1701558Srgrimes argc -= optind; 1711558Srgrimes argv += optind; 1721558Srgrimes 1731558Srgrimes if (argc < 1) 17448078Sru usage((char *)NULL); 1751558Srgrimes 17648078Sru if (killflg + doreboot + dohalt + dopower > 1) 17748078Sru usage("incompatible switches -h, -k, -p and -r"); 17848062Sjkoshy 17948078Sru if (oflag && !(dohalt || dopower || doreboot)) 18048078Sru usage("-o requires -h, -p or -r"); 18148062Sjkoshy 18248078Sru if (nosync != NULL && !oflag) 18348078Sru usage("-n requires -o"); 18448078Sru 1851558Srgrimes getoffset(*argv++); 1861558Srgrimes 187216823Spjdpoweroff: 1881558Srgrimes if (*argv) { 1891558Srgrimes for (p = mbuf, len = sizeof(mbuf); *argv; ++argv) { 1901558Srgrimes arglen = strlen(*argv); 1911558Srgrimes if ((len -= arglen) <= 2) 1921558Srgrimes break; 1931558Srgrimes if (p != mbuf) 1941558Srgrimes *p++ = ' '; 19541684Sbde memmove(p, *argv, arglen); 1961558Srgrimes p += arglen; 1971558Srgrimes } 1981558Srgrimes *p = '\n'; 1991558Srgrimes *++p = '\0'; 2001558Srgrimes } 2011558Srgrimes 2021558Srgrimes if (readstdin) { 2031558Srgrimes p = mbuf; 2041558Srgrimes endp = mbuf + sizeof(mbuf) - 2; 2051558Srgrimes for (;;) { 2061558Srgrimes if (!fgets(p, endp - p + 1, stdin)) 2071558Srgrimes break; 2081558Srgrimes for (; *p && p < endp; ++p); 2091558Srgrimes if (p == endp) { 2101558Srgrimes *p = '\n'; 2111558Srgrimes *++p = '\0'; 2121558Srgrimes break; 2131558Srgrimes } 2141558Srgrimes } 2151558Srgrimes } 2161558Srgrimes mbuflen = strlen(mbuf); 2171558Srgrimes 2181558Srgrimes if (offset) 2191558Srgrimes (void)printf("Shutdown at %.24s.\n", ctime(&shuttime)); 2201558Srgrimes else 2211558Srgrimes (void)printf("Shutdown NOW!\n"); 2221558Srgrimes 2231558Srgrimes if (!(whom = getlogin())) 2241558Srgrimes whom = (pw = getpwuid(getuid())) ? pw->pw_name : "???"; 2251558Srgrimes 2261558Srgrimes#ifdef DEBUG 2271558Srgrimes (void)putc('\n', stdout); 2281558Srgrimes#else 2291558Srgrimes (void)setpriority(PRIO_PROCESS, 0, PRIO_MIN); 2301558Srgrimes { 2311558Srgrimes int forkpid; 2321558Srgrimes 2331558Srgrimes forkpid = fork(); 23426737Scharnier if (forkpid == -1) 23526737Scharnier err(1, "fork"); 23626737Scharnier if (forkpid) 23726737Scharnier errx(0, "[pid %d]", forkpid); 2381558Srgrimes } 23928613Sjoerg setsid(); 2401558Srgrimes#endif 2411558Srgrimes openlog("shutdown", LOG_CONS, LOG_AUTH); 2421558Srgrimes loop(); 24338036Scharnier return(0); 2441558Srgrimes} 2451558Srgrimes 246197560Sdelphijstatic void 247197560Sdelphijloop(void) 2481558Srgrimes{ 2491558Srgrimes struct interval *tp; 2501558Srgrimes u_int sltime; 2511558Srgrimes int logged; 2521558Srgrimes 2531558Srgrimes if (offset <= NOLOG_TIME) { 2541558Srgrimes logged = 1; 2551558Srgrimes nolog(); 2561558Srgrimes } 2571558Srgrimes else 2581558Srgrimes logged = 0; 2591558Srgrimes tp = tlist; 2601558Srgrimes if (tp->timeleft < offset) 2611558Srgrimes (void)sleep((u_int)(offset - tp->timeleft)); 2621558Srgrimes else { 26348004Sru while (tp->timeleft && offset < tp->timeleft) 2641558Srgrimes ++tp; 2651558Srgrimes /* 2661558Srgrimes * Warn now, if going to sleep more than a fifth of 2671558Srgrimes * the next wait time. 2681558Srgrimes */ 26932399Salex if ((sltime = offset - tp->timeleft)) { 27079749Sdd if (sltime > (u_int)(tp->timetowait / 5)) 2711558Srgrimes timewarn(offset); 2721558Srgrimes (void)sleep(sltime); 2731558Srgrimes } 2741558Srgrimes } 2751558Srgrimes for (;; ++tp) { 2761558Srgrimes timewarn(tp->timeleft); 2771558Srgrimes if (!logged && tp->timeleft <= NOLOG_TIME) { 2781558Srgrimes logged = 1; 2791558Srgrimes nolog(); 2801558Srgrimes } 2811558Srgrimes (void)sleep((u_int)tp->timetowait); 2821558Srgrimes if (!tp->timeleft) 2831558Srgrimes break; 2841558Srgrimes } 285238968Sdes die_you_gravy_sucking_pig_dog(); 2861558Srgrimes} 2871558Srgrimes 2881558Srgrimesstatic jmp_buf alarmbuf; 2891558Srgrimes 29079749Sddstatic const char *restricted_environ[] = { 29132399Salex "PATH=" _PATH_STDPATH, 29232399Salex NULL 29332399Salex}; 29432399Salex 295197560Sdelphijstatic void 296140797Sdelphijtimewarn(int timeleft) 2971558Srgrimes{ 2981558Srgrimes static int first; 2991558Srgrimes static char hostname[MAXHOSTNAMELEN + 1]; 3001558Srgrimes FILE *pf; 3011558Srgrimes char wcmd[MAXPATHLEN + 4]; 3021558Srgrimes 3031558Srgrimes if (!first++) 3041558Srgrimes (void)gethostname(hostname, sizeof(hostname)); 3051558Srgrimes 3061558Srgrimes /* undoc -n option to wall suppresses normal wall banner */ 3071558Srgrimes (void)snprintf(wcmd, sizeof(wcmd), "%s -n", _PATH_WALL); 30832399Salex environ = restricted_environ; 3091558Srgrimes if (!(pf = popen(wcmd, "w"))) { 3101558Srgrimes syslog(LOG_ERR, "shutdown: can't find %s: %m", _PATH_WALL); 3111558Srgrimes return; 3121558Srgrimes } 3131558Srgrimes 3141558Srgrimes (void)fprintf(pf, 3151558Srgrimes "\007*** %sSystem shutdown message from %s@%s ***\007\n", 3161558Srgrimes timeleft ? "": "FINAL ", whom, hostname); 3171558Srgrimes 3181558Srgrimes if (timeleft > 10*60) 3191558Srgrimes (void)fprintf(pf, "System going down at %5.5s\n\n", 3201558Srgrimes ctime(&shuttime) + 11); 3211558Srgrimes else if (timeleft > 59) 3221558Srgrimes (void)fprintf(pf, "System going down in %d minute%s\n\n", 3231558Srgrimes timeleft / 60, (timeleft > 60) ? "s" : ""); 3241558Srgrimes else if (timeleft) 3251558Srgrimes (void)fprintf(pf, "System going down in 30 seconds\n\n"); 3261558Srgrimes else 3271558Srgrimes (void)fprintf(pf, "System going down IMMEDIATELY\n\n"); 3281558Srgrimes 3291558Srgrimes if (mbuflen) 3301558Srgrimes (void)fwrite(mbuf, sizeof(*mbuf), mbuflen, pf); 3311558Srgrimes 3321558Srgrimes /* 3331558Srgrimes * play some games, just in case wall doesn't come back 33438036Scharnier * probably unnecessary, given that wall is careful. 3351558Srgrimes */ 3361558Srgrimes if (!setjmp(alarmbuf)) { 3371558Srgrimes (void)signal(SIGALRM, timeout); 3381558Srgrimes (void)alarm((u_int)30); 3391558Srgrimes (void)pclose(pf); 3401558Srgrimes (void)alarm((u_int)0); 3411558Srgrimes (void)signal(SIGALRM, SIG_DFL); 3421558Srgrimes } 3431558Srgrimes} 3441558Srgrimes 345197560Sdelphijstatic void 346140797Sdelphijtimeout(int signo __unused) 3471558Srgrimes{ 3481558Srgrimes longjmp(alarmbuf, 1); 3491558Srgrimes} 3501558Srgrimes 351197560Sdelphijstatic void 352238968Sdesdie_you_gravy_sucking_pig_dog(void) 3531558Srgrimes{ 35432399Salex char *empty_environ[] = { NULL }; 3551558Srgrimes 3561558Srgrimes syslog(LOG_NOTICE, "%s by %s: %s", 35741666Smsmith doreboot ? "reboot" : dohalt ? "halt" : dopower ? "power-down" : 35841666Smsmith "shutdown", whom, mbuf); 3591558Srgrimes 3601558Srgrimes (void)printf("\r\nSystem shutdown time has arrived\007\007\r\n"); 3611558Srgrimes if (killflg) { 3621558Srgrimes (void)printf("\rbut you'll have to do it yourself\r\n"); 3634844Sats exit(0); 3641558Srgrimes } 3651558Srgrimes#ifdef DEBUG 3661558Srgrimes if (doreboot) 3671558Srgrimes (void)printf("reboot"); 3681558Srgrimes else if (dohalt) 3691558Srgrimes (void)printf("halt"); 37041666Smsmith else if (dopower) 37141666Smsmith (void)printf("power-down"); 37248078Sru if (nosync != NULL) 3731558Srgrimes (void)printf(" no sync"); 3741558Srgrimes (void)printf("\nkill -HUP 1\n"); 3751558Srgrimes#else 37648078Sru if (!oflag) { 37748078Sru (void)kill(1, doreboot ? SIGINT : /* reboot */ 37848078Sru dohalt ? SIGUSR1 : /* halt */ 37948078Sru dopower ? SIGUSR2 : /* power-down */ 38048078Sru SIGTERM); /* single-user */ 38148078Sru } else { 38248078Sru if (doreboot) { 38348078Sru execle(_PATH_REBOOT, "reboot", "-l", nosync, 38448078Sru (char *)NULL, empty_environ); 38548078Sru syslog(LOG_ERR, "shutdown: can't exec %s: %m.", 38648078Sru _PATH_REBOOT); 38748078Sru warn(_PATH_REBOOT); 38848078Sru } 38948078Sru else if (dohalt) { 39048078Sru execle(_PATH_HALT, "halt", "-l", nosync, 39148078Sru (char *)NULL, empty_environ); 39248078Sru syslog(LOG_ERR, "shutdown: can't exec %s: %m.", 39348078Sru _PATH_HALT); 39448078Sru warn(_PATH_HALT); 39548078Sru } 39648078Sru else if (dopower) { 39748078Sru execle(_PATH_HALT, "halt", "-l", "-p", nosync, 39848078Sru (char *)NULL, empty_environ); 39948078Sru syslog(LOG_ERR, "shutdown: can't exec %s: %m.", 40048078Sru _PATH_HALT); 40148078Sru warn(_PATH_HALT); 40248078Sru } 40348078Sru (void)kill(1, SIGTERM); /* to single-user */ 4041558Srgrimes } 4051558Srgrimes#endif 4061558Srgrimes finish(0); 4071558Srgrimes} 4081558Srgrimes 4091558Srgrimes#define ATOI2(p) (p[0] - '0') * 10 + (p[1] - '0'); p += 2; 4101558Srgrimes 411197560Sdelphijstatic void 412140797Sdelphijgetoffset(char *timearg) 4131558Srgrimes{ 41479749Sdd struct tm *lt; 41579749Sdd char *p; 4161558Srgrimes time_t now; 41732328Salex int this_year; 4181558Srgrimes 41948062Sjkoshy (void)time(&now); 42048062Sjkoshy 4211558Srgrimes if (!strcasecmp(timearg, "now")) { /* now */ 4221558Srgrimes offset = 0; 42348062Sjkoshy shuttime = now; 4241558Srgrimes return; 4251558Srgrimes } 4261558Srgrimes 4271558Srgrimes if (*timearg == '+') { /* +minutes */ 4281558Srgrimes if (!isdigit(*++timearg)) 4291558Srgrimes badtime(); 43048004Sru if ((offset = atoi(timearg) * 60) < 0) 43148004Sru badtime(); 4321558Srgrimes shuttime = now + offset; 4331558Srgrimes return; 4341558Srgrimes } 4351558Srgrimes 4361558Srgrimes /* handle hh:mm by getting rid of the colon */ 4371558Srgrimes for (p = timearg; *p; ++p) 43848956Sbillf if (!isascii(*p) || !isdigit(*p)) { 4391558Srgrimes if (*p == ':' && strlen(p) == 3) { 4401558Srgrimes p[0] = p[1]; 4411558Srgrimes p[1] = p[2]; 4421558Srgrimes p[2] = '\0'; 4431558Srgrimes } 4441558Srgrimes else 4451558Srgrimes badtime(); 44648956Sbillf } 4471558Srgrimes 4481558Srgrimes unsetenv("TZ"); /* OUR timezone */ 4491558Srgrimes lt = localtime(&now); /* current time val */ 4501558Srgrimes 4511558Srgrimes switch(strlen(timearg)) { 4521558Srgrimes case 10: 45332328Salex this_year = lt->tm_year; 4541558Srgrimes lt->tm_year = ATOI2(timearg); 45532328Salex /* 45632328Salex * check if the specified year is in the next century. 45732328Salex * allow for one year of user error as many people will 45832328Salex * enter n - 1 at the start of year n. 45932328Salex */ 46032328Salex if (lt->tm_year < (this_year % 100) - 1) 46132328Salex lt->tm_year += 100; 46232329Salex /* adjust for the year 2000 and beyond */ 46332328Salex lt->tm_year += (this_year - (this_year % 100)); 4641558Srgrimes /* FALLTHROUGH */ 4651558Srgrimes case 8: 4661558Srgrimes lt->tm_mon = ATOI2(timearg); 4671558Srgrimes if (--lt->tm_mon < 0 || lt->tm_mon > 11) 4681558Srgrimes badtime(); 4691558Srgrimes /* FALLTHROUGH */ 4701558Srgrimes case 6: 4711558Srgrimes lt->tm_mday = ATOI2(timearg); 4721558Srgrimes if (lt->tm_mday < 1 || lt->tm_mday > 31) 4731558Srgrimes badtime(); 4741558Srgrimes /* FALLTHROUGH */ 4751558Srgrimes case 4: 4761558Srgrimes lt->tm_hour = ATOI2(timearg); 4771558Srgrimes if (lt->tm_hour < 0 || lt->tm_hour > 23) 4781558Srgrimes badtime(); 4791558Srgrimes lt->tm_min = ATOI2(timearg); 4801558Srgrimes if (lt->tm_min < 0 || lt->tm_min > 59) 4811558Srgrimes badtime(); 4821558Srgrimes lt->tm_sec = 0; 4831558Srgrimes if ((shuttime = mktime(lt)) == -1) 4841558Srgrimes badtime(); 48526737Scharnier if ((offset = shuttime - now) < 0) 48626737Scharnier errx(1, "that time is already past."); 4871558Srgrimes break; 4881558Srgrimes default: 4891558Srgrimes badtime(); 4901558Srgrimes } 4911558Srgrimes} 4921558Srgrimes 4931558Srgrimes#define NOMSG "\n\nNO LOGINS: System going down at " 494197560Sdelphijstatic void 495197560Sdelphijnolog(void) 4961558Srgrimes{ 4971558Srgrimes int logfd; 4981558Srgrimes char *ct; 4991558Srgrimes 5001558Srgrimes (void)unlink(_PATH_NOLOGIN); /* in case linked to another file */ 5011558Srgrimes (void)signal(SIGINT, finish); 5021558Srgrimes (void)signal(SIGHUP, finish); 5031558Srgrimes (void)signal(SIGQUIT, finish); 5041558Srgrimes (void)signal(SIGTERM, finish); 5051558Srgrimes if ((logfd = open(_PATH_NOLOGIN, O_WRONLY|O_CREAT|O_TRUNC, 5061558Srgrimes 0664)) >= 0) { 5071558Srgrimes (void)write(logfd, NOMSG, sizeof(NOMSG) - 1); 5081558Srgrimes ct = ctime(&shuttime); 5091558Srgrimes (void)write(logfd, ct + 11, 5); 5101558Srgrimes (void)write(logfd, "\n\n", 2); 5111558Srgrimes (void)write(logfd, mbuf, strlen(mbuf)); 5121558Srgrimes (void)close(logfd); 5131558Srgrimes } 5141558Srgrimes} 5151558Srgrimes 516197560Sdelphijstatic void 517140797Sdelphijfinish(int signo __unused) 5181558Srgrimes{ 51941684Sbde if (!killflg) 52041684Sbde (void)unlink(_PATH_NOLOGIN); 5211558Srgrimes exit(0); 5221558Srgrimes} 5231558Srgrimes 524197560Sdelphijstatic void 525201180Sedbadtime(void) 5261558Srgrimes{ 52738036Scharnier errx(1, "bad time format"); 5281558Srgrimes} 5291558Srgrimes 530197560Sdelphijstatic void 531140797Sdelphijusage(const char *cp) 5321558Srgrimes{ 53348078Sru if (cp != NULL) 53448078Sru warnx("%s", cp); 53548078Sru (void)fprintf(stderr, 536216823Spjd "usage: shutdown [-] [-h | -p | -r | -k] [-o [-n]] time [warning-message ...]\n" 537216823Spjd " poweroff\n"); 5381558Srgrimes exit(1); 5391558Srgrimes} 540