| File: | src/sbin/shutdown/shutdown.c |
| Warning: | line 369, column 10 Although the value stored to 'wpid' is used in the enclosing expression, the value is never actually read from 'wpid' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: shutdown.c,v 1.55 2023/04/19 12:58:15 jsg Exp $ */ |
| 2 | /* $NetBSD: shutdown.c,v 1.9 1995/03/18 15:01:09 cgd Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 1988, 1990, 1993 |
| 6 | * The Regents of the University of California. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. Neither the name of the University nor the names of its contributors |
| 17 | * may be used to endorse or promote products derived from this software |
| 18 | * without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 30 | * SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #include <sys/types.h> |
| 34 | #include <sys/resource.h> |
| 35 | #include <sys/syslog.h> |
| 36 | #include <sys/wait.h> |
| 37 | |
| 38 | #include <ctype.h> |
| 39 | #include <fcntl.h> |
| 40 | #include <sys/termios.h> |
| 41 | #include <pwd.h> |
| 42 | #include <signal.h> |
| 43 | #include <stdio.h> |
| 44 | #include <stdlib.h> |
| 45 | #include <string.h> |
| 46 | #include <time.h> |
| 47 | #include <unistd.h> |
| 48 | #include <limits.h> |
| 49 | #include <errno(*__errno()).h> |
| 50 | #include <err.h> |
| 51 | |
| 52 | #include "pathnames.h" |
| 53 | |
| 54 | #ifdef DEBUG |
| 55 | #undef _PATH_NOLOGIN"/etc/nologin" |
| 56 | #define _PATH_NOLOGIN"/etc/nologin" "./nologin" |
| 57 | #undef _PATH_FASTBOOT"/fastboot" |
| 58 | #define _PATH_FASTBOOT"/fastboot" "./fastboot" |
| 59 | #endif |
| 60 | |
| 61 | #define H *60*60LL |
| 62 | #define M *60LL |
| 63 | #define S *1LL |
| 64 | #define TEN_HOURS(10*60*60) (10*60*60) |
| 65 | #define NOLOG_TIME(5*60) (5*60) |
| 66 | struct interval { |
| 67 | time_t timeleft; |
| 68 | time_t timetowait; |
| 69 | } tlist[] = { |
| 70 | { 0, 0 }, |
| 71 | { 10 H, 5 H }, |
| 72 | { 5 H, 3 H }, |
| 73 | { 2 H, 1 H }, |
| 74 | { 1 H, 30 M }, |
| 75 | { 30 M, 10 M }, |
| 76 | { 20 M, 10 M }, |
| 77 | { 10 M, 5 M }, |
| 78 | { 5 M, 3 M }, |
| 79 | { 2 M, 1 M }, |
| 80 | { 1 M, 30 S }, |
| 81 | { 30 S, 30 S }, |
| 82 | { 0, 0 } |
| 83 | }; |
| 84 | const int tlistlen = sizeof(tlist) / sizeof(tlist[0]); |
| 85 | #undef H |
| 86 | #undef M |
| 87 | #undef S |
| 88 | |
| 89 | static time_t offset, shuttime; |
| 90 | static int dofast, dohalt, doreboot, dopower, dodump, mbuflen, nosync; |
| 91 | static volatile sig_atomic_t killflg, timed_out; |
| 92 | static char *whom, mbuf[BUFSIZ1024]; |
| 93 | |
| 94 | void badtime(void); |
| 95 | void __dead__attribute__((__noreturn__)) die_you_gravy_sucking_pig_dog(void); |
| 96 | void doitfast(void); |
| 97 | void __dead__attribute__((__noreturn__)) finish(int); |
| 98 | void getoffset(char *); |
| 99 | void __dead__attribute__((__noreturn__)) loop(void); |
| 100 | void nolog(time_t); |
| 101 | void timeout(int); |
| 102 | void timewarn(time_t); |
| 103 | void usage(void); |
| 104 | |
| 105 | int |
| 106 | main(int argc, char *argv[]) |
| 107 | { |
| 108 | char when[64]; |
| 109 | char *p, *endp; |
| 110 | struct passwd *pw; |
| 111 | struct tm *lt; |
| 112 | int arglen, ch, len, readstdin = 0; |
| 113 | pid_t forkpid; |
| 114 | |
| 115 | #ifndef DEBUG |
| 116 | if (geteuid()) |
| 117 | errx(1, "NOT super-user"); |
| 118 | #endif |
| 119 | while ((ch = getopt(argc, argv, "dfhknpr-")) != -1) |
| 120 | switch (ch) { |
| 121 | case '-': |
| 122 | readstdin = 1; |
| 123 | break; |
| 124 | case 'd': |
| 125 | dodump = 1; |
| 126 | break; |
| 127 | case 'f': |
| 128 | dofast = 1; |
| 129 | break; |
| 130 | case 'h': |
| 131 | dohalt = 1; |
| 132 | break; |
| 133 | case 'k': |
| 134 | killflg = 1; |
| 135 | break; |
| 136 | case 'n': |
| 137 | nosync = 1; |
| 138 | break; |
| 139 | case 'p': |
| 140 | dopower = 1; |
| 141 | break; |
| 142 | case 'r': |
| 143 | doreboot = 1; |
| 144 | break; |
| 145 | default: |
| 146 | usage(); |
| 147 | } |
| 148 | argc -= optind; |
| 149 | argv += optind; |
| 150 | |
| 151 | if (argc < 1) |
| 152 | usage(); |
| 153 | |
| 154 | if (dofast && nosync) { |
| 155 | warnx("incompatible switches -f and -n."); |
| 156 | usage(); |
| 157 | } |
| 158 | if (doreboot && dohalt) { |
| 159 | warnx("incompatible switches -h and -r."); |
| 160 | usage(); |
| 161 | } |
| 162 | if (doreboot && dopower) { |
| 163 | warnx("incompatible switches -p and -r."); |
| 164 | usage(); |
| 165 | } |
| 166 | |
| 167 | if (unveil(_PATH_CONSOLE"/dev/console", "rw") == -1) |
| 168 | err(1, "unveil %s", _PATH_CONSOLE"/dev/console"); |
| 169 | if (unveil(_PATH_RC"/etc/rc", "r") == -1) |
| 170 | err(1, "unveil %s", _PATH_RC"/etc/rc"); |
| 171 | if (unveil(_PATH_WALL"/usr/bin/wall", "x") == -1) |
| 172 | err(1, "unveil %s", _PATH_WALL"/usr/bin/wall"); |
| 173 | if (unveil(_PATH_FASTBOOT"/fastboot", "wc") == -1) |
| 174 | err(1, "unveil %s", _PATH_FASTBOOT"/fastboot"); |
| 175 | if (unveil(_PATH_NOLOGIN"/etc/nologin", "wc") == -1) |
| 176 | err(1, "unveil %s", _PATH_NOLOGIN"/etc/nologin"); |
| 177 | if (dohalt || dopower) { |
| 178 | if (unveil(_PATH_HALT"/sbin/halt", "x") == -1) |
| 179 | err(1, "unveil %s", _PATH_HALT"/sbin/halt"); |
| 180 | } else if (doreboot) { |
| 181 | if (unveil(_PATH_REBOOT"/sbin/reboot", "x") == -1) |
| 182 | err(1, "unveil %s", _PATH_REBOOT"/sbin/reboot"); |
| 183 | } else { |
| 184 | if (unveil(_PATH_BSHELL"/bin/sh", "x") == -1) |
| 185 | err(1, "unveil %s", _PATH_BSHELL"/bin/sh"); |
| 186 | } |
| 187 | if (pledge("stdio rpath wpath cpath getpw tty id proc exec", NULL((void *)0)) == -1) |
| 188 | err(1, "pledge"); |
| 189 | |
| 190 | getoffset(*argv++); |
| 191 | |
| 192 | if (*argv) { |
| 193 | for (p = mbuf, len = sizeof(mbuf); *argv; ++argv) { |
| 194 | arglen = strlen(*argv); |
| 195 | if ((len -= arglen) <= 2) |
| 196 | break; |
| 197 | if (p != mbuf) |
| 198 | *p++ = ' '; |
| 199 | memcpy(p, *argv, arglen); |
| 200 | p += arglen; |
| 201 | } |
| 202 | *p = '\n'; |
| 203 | *++p = '\0'; |
| 204 | } |
| 205 | |
| 206 | if (readstdin) { |
| 207 | p = mbuf; |
| 208 | endp = mbuf + sizeof(mbuf) - 2; |
| 209 | for (;;) { |
| 210 | if (!fgets(p, endp - p + 1, stdin(&__sF[0]))) |
| 211 | break; |
| 212 | for (; *p && p < endp; ++p) |
| 213 | ; |
| 214 | if (p == endp) { |
| 215 | *p = '\n'; |
| 216 | *++p = '\0'; |
| 217 | break; |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | mbuflen = strlen(mbuf); |
| 222 | |
| 223 | if (offset > 0) { |
| 224 | shuttime = time(NULL((void *)0)) + offset; |
| 225 | lt = localtime(&shuttime); |
| 226 | if (lt != NULL((void *)0)) { |
| 227 | strftime(when, sizeof(when), "%a %b %e %T %Z %Y", lt); |
| 228 | printf("Shutdown at %s.\n", when); |
| 229 | } else |
| 230 | printf("Shutdown soon.\n"); |
| 231 | } else |
| 232 | printf("Shutdown NOW!\n"); |
| 233 | |
| 234 | if (!(whom = getlogin())) |
| 235 | whom = (pw = getpwuid(getuid())) ? pw->pw_name : "???"; |
| 236 | |
| 237 | #ifdef DEBUG |
| 238 | (void)putc('\n', stdout)(!__isthreaded ? __sputc('\n', (&__sF[1])) : (putc)('\n', (&__sF[1]))); |
| 239 | #else |
| 240 | (void)setpriority(PRIO_PROCESS0, 0, PRIO_MIN(-20)); |
| 241 | |
| 242 | forkpid = fork(); |
| 243 | if (forkpid == -1) |
| 244 | err(1, "fork"); |
| 245 | if (forkpid) { |
| 246 | (void)printf("shutdown: [pid %ld]\n", (long)forkpid); |
| 247 | exit(0); |
| 248 | } |
| 249 | setsid(); |
| 250 | #endif |
| 251 | openlog("shutdown", LOG_CONS0x02, LOG_AUTH(4<<3)); |
| 252 | loop(); |
| 253 | /* NOTREACHED */ |
| 254 | } |
| 255 | |
| 256 | void |
| 257 | loop(void) |
| 258 | { |
| 259 | struct timespec timeout; |
| 260 | int broadcast, i, logged; |
| 261 | |
| 262 | broadcast = 1; |
| 263 | |
| 264 | for (i = 0; i < tlistlen - 1; i++) { |
| 265 | if (offset > tlist[i + 1].timeleft) { |
| 266 | tlist[i].timeleft = offset; |
| 267 | tlist[i].timetowait = offset - tlist[i + 1].timeleft; |
| 268 | break; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Don't spam the users: skip our offset's warning broadcast if |
| 274 | * there's a broadcast scheduled after ours and it's relatively |
| 275 | * imminent. |
| 276 | */ |
| 277 | if (offset > TEN_HOURS(10*60*60) || |
| 278 | (offset > 0 && tlist[i].timetowait < tlist[i+1].timetowait / 5)) |
| 279 | broadcast = 0; |
| 280 | |
| 281 | for (logged = 0; i < tlistlen; i++) { |
| 282 | if (broadcast) |
| 283 | timewarn(tlist[i].timeleft); |
| 284 | broadcast = 1; |
| 285 | if (!logged && tlist[i].timeleft <= NOLOG_TIME(5*60)) { |
| 286 | logged = 1; |
| 287 | nolog(tlist[i].timeleft); |
| 288 | } |
| 289 | timeout.tv_sec = tlist[i].timetowait; |
| 290 | timeout.tv_nsec = 0; |
| 291 | nanosleep(&timeout, NULL((void *)0)); |
| 292 | } |
| 293 | die_you_gravy_sucking_pig_dog(); |
| 294 | } |
| 295 | |
| 296 | static char *restricted_environ[] = { |
| 297 | "PATH=" _PATH_STDPATH"/usr/bin:/bin:/usr/sbin:/sbin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin", |
| 298 | NULL((void *)0) |
| 299 | }; |
| 300 | |
| 301 | void |
| 302 | timewarn(time_t timeleft) |
| 303 | { |
| 304 | static char hostname[HOST_NAME_MAX255+1]; |
| 305 | char when[64]; |
| 306 | struct tm *lt; |
| 307 | static int first; |
| 308 | int fd[2]; |
| 309 | pid_t pid, wpid; |
| 310 | |
| 311 | if (!first++) |
| 312 | (void)gethostname(hostname, sizeof(hostname)); |
| 313 | |
| 314 | if (pipe(fd) == -1) { |
| 315 | syslog(LOG_ERR3, "pipe: %m"); |
| 316 | return; |
| 317 | } |
| 318 | switch (pid = fork()) { |
| 319 | case -1: |
| 320 | syslog(LOG_ERR3, "fork: %m"); |
| 321 | close(fd[0]); |
| 322 | close(fd[1]); |
| 323 | return; |
| 324 | case 0: |
| 325 | if (dup2(fd[0], STDIN_FILENO0) == -1) { |
| 326 | syslog(LOG_ERR3, "dup2: %m"); |
| 327 | _exit(1); |
| 328 | } |
| 329 | if (fd[0] != STDIN_FILENO0) |
| 330 | close(fd[0]); |
| 331 | close(fd[1]); |
| 332 | /* wall(1)'s undocumented '-n' flag suppresses its banner. */ |
| 333 | execle(_PATH_WALL"/usr/bin/wall", _PATH_WALL"/usr/bin/wall", "-n", (char *)NULL((void *)0), |
| 334 | restricted_environ); |
| 335 | syslog(LOG_ERR3, "%s: %m", _PATH_WALL"/usr/bin/wall"); |
| 336 | _exit(1); |
| 337 | default: |
| 338 | close(fd[0]); |
| 339 | } |
| 340 | |
| 341 | dprintf(fd[1], |
| 342 | "\007*** %sSystem shutdown message from %s@%s ***\007\n", |
| 343 | timeleft ? "": "FINAL ", whom, hostname); |
| 344 | |
| 345 | if (timeleft > 10 * 60) { |
| 346 | shuttime = time(NULL((void *)0)) + timeleft; |
| 347 | lt = localtime(&shuttime); |
| 348 | strftime(when, sizeof(when), "%H:%M %Z", lt); |
| 349 | dprintf(fd[1], "System going down at %s\n\n", when); |
| 350 | } else if (timeleft > 59) { |
| 351 | dprintf(fd[1], "System going down in %lld minute%s\n\n", |
| 352 | (long long)(timeleft / 60), (timeleft > 60) ? "s" : ""); |
| 353 | } else if (timeleft) |
| 354 | dprintf(fd[1], "System going down in 30 seconds\n\n"); |
| 355 | else |
| 356 | dprintf(fd[1], "System going down IMMEDIATELY\n\n"); |
| 357 | |
| 358 | if (mbuflen) |
| 359 | (void)write(fd[1], mbuf, mbuflen); |
| 360 | close(fd[1]); |
| 361 | |
| 362 | /* |
| 363 | * If we wait longer than 30 seconds for wall(1) to exit we'll |
| 364 | * throw off our schedule. |
| 365 | */ |
| 366 | signal(SIGALRM14, timeout); |
| 367 | siginterrupt(SIGALRM14, 1); |
| 368 | alarm(30); |
| 369 | while ((wpid = wait(NULL((void *)0))) != pid && !timed_out) |
Although the value stored to 'wpid' is used in the enclosing expression, the value is never actually read from 'wpid' | |
| 370 | continue; |
| 371 | alarm(0); |
| 372 | signal(SIGALRM14, SIG_DFL(void (*)(int))0); |
| 373 | if (timed_out) { |
| 374 | syslog(LOG_NOTICE5, |
| 375 | "wall[%ld] is taking too long to exit; continuing", |
| 376 | (long)pid); |
| 377 | timed_out = 0; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | void |
| 382 | timeout(int signo) |
| 383 | { |
| 384 | timed_out = 1; |
| 385 | } |
| 386 | |
| 387 | void |
| 388 | die_you_gravy_sucking_pig_dog(void) |
| 389 | { |
| 390 | |
| 391 | syslog(LOG_NOTICE5, "%s by %s: %s", |
| 392 | doreboot ? "reboot" : dopower ? "power-down" : dohalt ? "halt" : |
| 393 | "shutdown", whom, mbuf); |
| 394 | (void)sleep(2); |
| 395 | |
| 396 | (void)printf("\r\nSystem shutdown time has arrived\007\007\r\n"); |
| 397 | if (killflg) { |
| 398 | (void)printf("\rbut you'll have to do it yourself\r\n"); |
| 399 | finish(0); |
| 400 | } |
| 401 | if (dofast) |
| 402 | doitfast(); |
| 403 | |
| 404 | if (pledge("stdio rpath wpath cpath tty id proc exec", NULL((void *)0)) == -1) |
| 405 | err(1, "pledge"); |
| 406 | |
| 407 | #ifdef DEBUG |
| 408 | if (doreboot) |
| 409 | (void)printf("reboot"); |
| 410 | else if (dopower) |
| 411 | (void)printf("power-down"); |
| 412 | else if (dohalt) |
| 413 | (void)printf("halt"); |
| 414 | if (nosync) |
| 415 | (void)printf(" no sync"); |
| 416 | if (dofast) |
| 417 | (void)printf(" no fsck"); |
| 418 | if (dodump) |
| 419 | (void)printf(" with dump"); |
| 420 | (void)printf("\nkill -HUP 1\n"); |
| 421 | #else |
| 422 | if (dohalt || dopower || doreboot) { |
| 423 | char *args[10]; |
| 424 | char **arg, *path; |
| 425 | |
| 426 | if (pledge("stdio exec", NULL((void *)0)) == -1) |
| 427 | err(1, "pledge"); |
| 428 | |
| 429 | arg = &args[0]; |
| 430 | if (doreboot) { |
| 431 | path = _PATH_REBOOT"/sbin/reboot"; |
| 432 | *arg++ = "reboot"; |
| 433 | } else { |
| 434 | path = _PATH_HALT"/sbin/halt"; |
| 435 | *arg++ = "halt"; |
| 436 | } |
| 437 | *arg++ = "-l"; |
| 438 | if (dopower) |
| 439 | *arg++ = "-p"; |
| 440 | if (nosync) |
| 441 | *arg++ = "-n"; |
| 442 | if (dodump) |
| 443 | *arg++ = "-d"; |
| 444 | *arg++ = NULL((void *)0); |
| 445 | execve(path, args, NULL((void *)0)); |
| 446 | syslog(LOG_ERR3, "shutdown: can't exec %s: %m.", path); |
| 447 | warn("%s", path); |
| 448 | } |
| 449 | if (access(_PATH_RC"/etc/rc", R_OK0x04) != -1) { |
| 450 | pid_t pid; |
| 451 | struct termios t; |
| 452 | int fd; |
| 453 | |
| 454 | switch ((pid = fork())) { |
| 455 | case -1: |
| 456 | break; |
| 457 | case 0: |
| 458 | if (revoke(_PATH_CONSOLE"/dev/console") == -1) |
| 459 | perror("revoke"); |
| 460 | if (setsid() == -1) |
| 461 | perror("setsid"); |
| 462 | fd = open(_PATH_CONSOLE"/dev/console", O_RDWR0x0002); |
| 463 | if (fd == -1) |
| 464 | perror("open"); |
| 465 | dup2(fd, 0); |
| 466 | dup2(fd, 1); |
| 467 | dup2(fd, 2); |
| 468 | if (fd > 2) |
| 469 | close(fd); |
| 470 | |
| 471 | /* At a minimum... */ |
| 472 | tcgetattr(0, &t); |
| 473 | t.c_oflag |= (ONLCR0x00000002 | OPOST0x00000001); |
| 474 | tcsetattr(0, TCSANOW0, &t); |
| 475 | |
| 476 | execl(_PATH_BSHELL"/bin/sh", "sh", _PATH_RC"/etc/rc", "shutdown", (char *)NULL((void *)0)); |
| 477 | _exit(1); |
| 478 | default: |
| 479 | waitpid(pid, NULL((void *)0), 0); |
| 480 | } |
| 481 | } |
| 482 | (void)kill(1, SIGTERM15); /* to single user */ |
| 483 | #endif |
| 484 | finish(0); |
| 485 | } |
| 486 | |
| 487 | #define ATOI2(p)(p[0] - '0') * 10 + (p[1] - '0'); p += 2; (p[0] - '0') * 10 + (p[1] - '0'); p += 2; |
| 488 | |
| 489 | void |
| 490 | getoffset(char *timearg) |
| 491 | { |
| 492 | char when[64]; |
| 493 | const char *errstr; |
| 494 | struct tm *lt; |
| 495 | int this_year; |
| 496 | time_t minutes, now; |
| 497 | char *p; |
| 498 | |
| 499 | if (!strcasecmp(timearg, "now")) { /* now */ |
| 500 | offset = 0; |
| 501 | return; |
| 502 | } |
| 503 | |
| 504 | if (timearg[0] == '+') { /* +minutes */ |
| 505 | minutes = strtonum(timearg, 0, INT_MAX0x7fffffff, &errstr); |
| 506 | if (errstr) |
| 507 | errx(1, "relative offset is %s: %s", errstr, timearg); |
| 508 | offset = minutes * 60; |
| 509 | return; |
| 510 | } |
| 511 | |
| 512 | /* handle hh:mm by getting rid of the colon */ |
| 513 | for (p = timearg; *p; ++p) { |
| 514 | if (!isascii((unsigned char)*p) || !isdigit((unsigned char)*p)) { |
| 515 | if (*p == ':' && strlen(p) == 3) { |
| 516 | p[0] = p[1]; |
| 517 | p[1] = p[2]; |
| 518 | p[2] = '\0'; |
| 519 | } else |
| 520 | badtime(); |
| 521 | } |
| 522 | } |
| 523 | |
| 524 | unsetenv("TZ"); /* OUR timezone */ |
| 525 | time(&now); |
| 526 | lt = localtime(&now); /* current time val */ |
| 527 | |
| 528 | switch (strlen(timearg)) { |
| 529 | case 10: |
| 530 | this_year = lt->tm_year; |
| 531 | lt->tm_year = ATOI2(timearg)(timearg[0] - '0') * 10 + (timearg[1] - '0'); timearg += 2;; |
| 532 | /* |
| 533 | * check if the specified year is in the next century. |
| 534 | * allow for one year of user error as many people will |
| 535 | * enter n - 1 at the start of year n. |
| 536 | */ |
| 537 | if (lt->tm_year < (this_year % 100) - 1) |
| 538 | lt->tm_year += 100; |
| 539 | /* adjust for the year 2000 and beyond */ |
| 540 | lt->tm_year += (this_year - (this_year % 100)); |
| 541 | /* FALLTHROUGH */ |
| 542 | case 8: |
| 543 | lt->tm_mon = ATOI2(timearg)(timearg[0] - '0') * 10 + (timearg[1] - '0'); timearg += 2;; |
| 544 | if (--lt->tm_mon < 0 || lt->tm_mon > 11) |
| 545 | badtime(); |
| 546 | /* FALLTHROUGH */ |
| 547 | case 6: |
| 548 | lt->tm_mday = ATOI2(timearg)(timearg[0] - '0') * 10 + (timearg[1] - '0'); timearg += 2;; |
| 549 | if (lt->tm_mday < 1 || lt->tm_mday > 31) |
| 550 | badtime(); |
| 551 | /* FALLTHROUGH */ |
| 552 | case 4: |
| 553 | lt->tm_hour = ATOI2(timearg)(timearg[0] - '0') * 10 + (timearg[1] - '0'); timearg += 2;; |
| 554 | if (lt->tm_hour < 0 || lt->tm_hour > 23) |
| 555 | badtime(); |
| 556 | lt->tm_min = ATOI2(timearg)(timearg[0] - '0') * 10 + (timearg[1] - '0'); timearg += 2;; |
| 557 | if (lt->tm_min < 0 || lt->tm_min > 59) |
| 558 | badtime(); |
| 559 | lt->tm_sec = 0; |
| 560 | if ((shuttime = mktime(lt)) == -1) |
| 561 | badtime(); |
| 562 | if ((offset = shuttime - now) < 0) { |
| 563 | strftime(when, sizeof(when), "%a %b %e %T %Z %Y", lt); |
| 564 | errx(1, "time is already past: %s", when); |
| 565 | } |
| 566 | break; |
| 567 | default: |
| 568 | badtime(); |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | void |
| 573 | doitfast(void) |
| 574 | { |
| 575 | int fastfd; |
| 576 | |
| 577 | if ((fastfd = open(_PATH_FASTBOOT"/fastboot", O_WRONLY0x0001|O_CREAT0x0200|O_TRUNC0x0400, |
| 578 | 0664)) >= 0) { |
| 579 | dprintf(fastfd, "fastboot file for fsck\n"); |
| 580 | close(fastfd); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | void |
| 585 | nolog(time_t timeleft) |
| 586 | { |
| 587 | char when[64]; |
| 588 | struct tm *tm; |
| 589 | int logfd; |
| 590 | |
| 591 | (void)unlink(_PATH_NOLOGIN"/etc/nologin"); /* in case linked to another file */ |
| 592 | (void)signal(SIGINT2, finish); |
| 593 | (void)signal(SIGHUP1, finish); |
| 594 | (void)signal(SIGQUIT3, finish); |
| 595 | (void)signal(SIGTERM15, finish); |
| 596 | shuttime = time(NULL((void *)0)) + timeleft; |
| 597 | tm = localtime(&shuttime); |
| 598 | if (tm && (logfd = open(_PATH_NOLOGIN"/etc/nologin", O_WRONLY0x0001|O_CREAT0x0200|O_TRUNC0x0400, |
| 599 | 0664)) >= 0) { |
| 600 | strftime(when, sizeof(when), "at %H:%M %Z", tm); |
| 601 | dprintf(logfd, "\n\nNO LOGINS: System going down %s\n\n", when); |
| 602 | close(logfd); |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | void |
| 607 | finish(int signo) |
| 608 | { |
| 609 | if (!killflg) |
| 610 | (void)unlink(_PATH_NOLOGIN"/etc/nologin"); |
| 611 | if (signo == 0) |
| 612 | exit(0); |
| 613 | else |
| 614 | _exit(0); |
| 615 | } |
| 616 | |
| 617 | void |
| 618 | badtime(void) |
| 619 | { |
| 620 | errx(1, "bad time format."); |
| 621 | } |
| 622 | |
| 623 | void |
| 624 | usage(void) |
| 625 | { |
| 626 | fprintf(stderr(&__sF[2]), |
| 627 | "usage: shutdown [-] [-dfhknpr] time [warning-message ...]\n"); |
| 628 | exit(1); |
| 629 | } |