1 /*-
2 * Copyright (c) 1986, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)kern_shutdown.c 8.3 (Berkeley) 1/21/94
35 */
36
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD: releng/9.0/sys/kern/kern_shutdown.c 225617 2011-09-16 13:58:51Z kmacy $");
39
40 #include "opt_ddb.h"
41 #include "opt_kdb.h"
42 #include "opt_panic.h"
43 #include "opt_sched.h"
44 #include "opt_watchdog.h"
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/bio.h>
49 #include <sys/buf.h>
50 #include <sys/conf.h>
51 #include <sys/cons.h>
52 #include <sys/eventhandler.h>
53 #include <sys/jail.h>
54 #include <sys/kdb.h>
55 #include <sys/kernel.h>
56 #include <sys/kerneldump.h>
57 #include <sys/kthread.h>
58 #include <sys/malloc.h>
59 #include <sys/mount.h>
60 #include <sys/priv.h>
61 #include <sys/proc.h>
62 #include <sys/reboot.h>
63 #include <sys/resourcevar.h>
64 #include <sys/sched.h>
65 #include <sys/smp.h>
66 #include <sys/sysctl.h>
67 #include <sys/sysproto.h>
68 #include <sys/vnode.h>
69 #ifdef SW_WATCHDOG
70 #include <sys/watchdog.h>
71 #endif
72
73 #include <ddb/ddb.h>
74
75 #include <machine/cpu.h>
76 #include <machine/pcb.h>
77 #include <machine/smp.h>
78
79 #include <security/mac/mac_framework.h>
80
81 #include <vm/vm.h>
82 #include <vm/vm_object.h>
83 #include <vm/vm_page.h>
84 #include <vm/vm_pager.h>
85 #include <vm/swap_pager.h>
86
87 #include <sys/signalvar.h>
88
89 #ifndef PANIC_REBOOT_WAIT_TIME
90 #define PANIC_REBOOT_WAIT_TIME 15 /* default to 15 seconds */
91 #endif
92
93 /*
94 * Note that stdarg.h and the ANSI style va_start macro is used for both
95 * ANSI and traditional C compilers.
96 */
97 #include <machine/stdarg.h>
98
99 #ifdef KDB
100 #ifdef KDB_UNATTENDED
101 int debugger_on_panic = 0;
102 #else
103 int debugger_on_panic = 1;
104 #endif
105 SYSCTL_INT(_debug, OID_AUTO, debugger_on_panic, CTLFLAG_RW | CTLFLAG_TUN,
106 &debugger_on_panic, 0, "Run debugger on kernel panic");
107 TUNABLE_INT("debug.debugger_on_panic", &debugger_on_panic);
108
109 #ifdef KDB_TRACE
110 static int trace_on_panic = 1;
111 #else
112 static int trace_on_panic = 0;
113 #endif
114 SYSCTL_INT(_debug, OID_AUTO, trace_on_panic, CTLFLAG_RW | CTLFLAG_TUN,
115 &trace_on_panic, 0, "Print stack trace on kernel panic");
116 TUNABLE_INT("debug.trace_on_panic", &trace_on_panic);
117 #endif /* KDB */
118
119 static int sync_on_panic = 0;
120 SYSCTL_INT(_kern, OID_AUTO, sync_on_panic, CTLFLAG_RW | CTLFLAG_TUN,
121 &sync_on_panic, 0, "Do a sync before rebooting from a panic");
122 TUNABLE_INT("kern.sync_on_panic", &sync_on_panic);
123
124 SYSCTL_NODE(_kern, OID_AUTO, shutdown, CTLFLAG_RW, 0, "Shutdown environment");
125
126 #ifndef DIAGNOSTIC
127 static int show_busybufs;
128 #else
129 static int show_busybufs = 1;
130 #endif
131 SYSCTL_INT(_kern_shutdown, OID_AUTO, show_busybufs, CTLFLAG_RW,
132 &show_busybufs, 0, "");
133
134 /*
135 * Variable panicstr contains argument to first call to panic; used as flag
136 * to indicate that the kernel has already called panic.
137 */
138 const char *panicstr;
139
140 int dumping; /* system is dumping */
141 int rebooting; /* system is rebooting */
142 static struct dumperinfo dumper; /* our selected dumper */
143
144 /* Context information for dump-debuggers. */
145 static struct pcb dumppcb; /* Registers. */
146 static lwpid_t dumptid; /* Thread ID. */
147
148 static void poweroff_wait(void *, int);
149 static void shutdown_halt(void *junk, int howto);
150 static void shutdown_panic(void *junk, int howto);
151 static void shutdown_reset(void *junk, int howto);
152
153 /* register various local shutdown events */
154 static void
155 shutdown_conf(void *unused)
156 {
157
158 EVENTHANDLER_REGISTER(shutdown_final, poweroff_wait, NULL,
159 SHUTDOWN_PRI_FIRST);
160 EVENTHANDLER_REGISTER(shutdown_final, shutdown_halt, NULL,
161 SHUTDOWN_PRI_LAST + 100);
162 EVENTHANDLER_REGISTER(shutdown_final, shutdown_panic, NULL,
163 SHUTDOWN_PRI_LAST + 100);
164 EVENTHANDLER_REGISTER(shutdown_final, shutdown_reset, NULL,
165 SHUTDOWN_PRI_LAST + 200);
166 }
167
168 SYSINIT(shutdown_conf, SI_SUB_INTRINSIC, SI_ORDER_ANY, shutdown_conf, NULL);
169
170 /*
171 * The system call that results in a reboot.
172 */
173 /* ARGSUSED */
174 int
175 sys_reboot(struct thread *td, struct reboot_args *uap)
176 {
177 int error;
178
179 error = 0;
180 #ifdef MAC
181 error = mac_system_check_reboot(td->td_ucred, uap->opt);
182 #endif
183 if (error == 0)
184 error = priv_check(td, PRIV_REBOOT);
185 if (error == 0) {
186 mtx_lock(&Giant);
187 kern_reboot(uap->opt);
188 mtx_unlock(&Giant);
189 }
190 return (error);
191 }
192
193 /*
194 * Called by events that want to shut down.. e.g <CTL><ALT><DEL> on a PC
195 */
196 static int shutdown_howto = 0;
197
198 void
199 shutdown_nice(int howto)
200 {
201
202 shutdown_howto = howto;
203
204 /* Send a signal to init(8) and have it shutdown the world */
205 if (initproc != NULL) {
206 PROC_LOCK(initproc);
207 kern_psignal(initproc, SIGINT);
208 PROC_UNLOCK(initproc);
209 } else {
210 /* No init(8) running, so simply reboot */
211 kern_reboot(RB_NOSYNC);
212 }
213 return;
214 }
215 static int waittime = -1;
216
217 static void
218 print_uptime(void)
219 {
220 int f;
221 struct timespec ts;
222
223 getnanouptime(&ts);
224 printf("Uptime: ");
225 f = 0;
226 if (ts.tv_sec >= 86400) {
227 printf("%ldd", (long)ts.tv_sec / 86400);
228 ts.tv_sec %= 86400;
229 f = 1;
230 }
231 if (f || ts.tv_sec >= 3600) {
232 printf("%ldh", (long)ts.tv_sec / 3600);
233 ts.tv_sec %= 3600;
234 f = 1;
235 }
236 if (f || ts.tv_sec >= 60) {
237 printf("%ldm", (long)ts.tv_sec / 60);
238 ts.tv_sec %= 60;
239 f = 1;
240 }
241 printf("%lds\n", (long)ts.tv_sec);
242 }
243
244 int
245 doadump(boolean_t textdump)
246 {
247 boolean_t coredump;
248
249 if (dumping)
250 return (EBUSY);
251 if (dumper.dumper == NULL)
252 return (ENXIO);
253
254 savectx(&dumppcb);
255 dumptid = curthread->td_tid;
256 dumping++;
257
258 coredump = TRUE;
259 #ifdef DDB
260 if (textdump && textdump_pending) {
261 coredump = FALSE;
262 textdump_dumpsys(&dumper);
263 }
264 #endif
265 if (coredump)
266 dumpsys(&dumper);
267
268 dumping--;
269 return (0);
270 }
271
272 static int
273 isbufbusy(struct buf *bp)
274 {
275 if (((bp->b_flags & (B_INVAL | B_PERSISTENT)) == 0 &&
276 BUF_ISLOCKED(bp)) ||
277 ((bp->b_flags & (B_DELWRI | B_INVAL)) == B_DELWRI))
278 return (1);
279 return (0);
280 }
281
282 /*
283 * Shutdown the system cleanly to prepare for reboot, halt, or power off.
284 */
285 void
286 kern_reboot(int howto)
287 {
288 static int first_buf_printf = 1;
289
290 #if defined(SMP)
291 /*
292 * Bind us to CPU 0 so that all shutdown code runs there. Some
293 * systems don't shutdown properly (i.e., ACPI power off) if we
294 * run on another processor.
295 */
296 thread_lock(curthread);
297 sched_bind(curthread, 0);
298 thread_unlock(curthread);
299 KASSERT(PCPU_GET(cpuid) == 0, ("%s: not running on cpu 0", __func__));
300 #endif
301 /* We're in the process of rebooting. */
302 rebooting = 1;
303
304 /* collect extra flags that shutdown_nice might have set */
305 howto |= shutdown_howto;
306
307 /* We are out of the debugger now. */
308 kdb_active = 0;
309
310 /*
311 * Do any callouts that should be done BEFORE syncing the filesystems.
312 */
313 EVENTHANDLER_INVOKE(shutdown_pre_sync, howto);
314
315 /*
316 * Now sync filesystems
317 */
318 if (!cold && (howto & RB_NOSYNC) == 0 && waittime < 0) {
319 register struct buf *bp;
320 int iter, nbusy, pbusy;
321 #ifndef PREEMPTION
322 int subiter;
323 #endif
324
325 waittime = 0;
326
327 #ifdef SW_WATCHDOG
328 wdog_kern_pat(WD_LASTVAL);
329 #endif
330 sys_sync(curthread, NULL);
331
332 /*
333 * With soft updates, some buffers that are
334 * written will be remarked as dirty until other
335 * buffers are written.
336 */
337 for (iter = pbusy = 0; iter < 20; iter++) {
338 nbusy = 0;
339 for (bp = &buf[nbuf]; --bp >= buf; )
340 if (isbufbusy(bp))
341 nbusy++;
342 if (nbusy == 0) {
343 if (first_buf_printf)
344 printf("All buffers synced.");
345 break;
346 }
347 if (first_buf_printf) {
348 printf("Syncing disks, buffers remaining... ");
349 first_buf_printf = 0;
350 }
351 printf("%d ", nbusy);
352 if (nbusy < pbusy)
353 iter = 0;
354 pbusy = nbusy;
355 #ifdef SW_WATCHDOG
356 wdog_kern_pat(WD_LASTVAL);
357 #endif
358 sys_sync(curthread, NULL);
359
360 #ifdef PREEMPTION
361 /*
362 * Drop Giant and spin for a while to allow
363 * interrupt threads to run.
364 */
365 DROP_GIANT();
366 DELAY(50000 * iter);
367 PICKUP_GIANT();
368 #else
369 /*
370 * Drop Giant and context switch several times to
371 * allow interrupt threads to run.
372 */
373 DROP_GIANT();
374 for (subiter = 0; subiter < 50 * iter; subiter++) {
375 thread_lock(curthread);
376 mi_switch(SW_VOL, NULL);
377 thread_unlock(curthread);
378 DELAY(1000);
379 }
380 PICKUP_GIANT();
381 #endif
382 }
383 printf("\n");
384 /*
385 * Count only busy local buffers to prevent forcing
386 * a fsck if we're just a client of a wedged NFS server
387 */
388 nbusy = 0;
389 for (bp = &buf[nbuf]; --bp >= buf; ) {
390 if (isbufbusy(bp)) {
391 #if 0
392 /* XXX: This is bogus. We should probably have a BO_REMOTE flag instead */
393 if (bp->b_dev == NULL) {
394 TAILQ_REMOVE(&mountlist,
395 bp->b_vp->v_mount, mnt_list);
396 continue;
397 }
398 #endif
399 nbusy++;
400 if (show_busybufs > 0) {
401 printf(
402 "%d: buf:%p, vnode:%p, flags:%0x, blkno:%jd, lblkno:%jd, buflock:",
403 nbusy, bp, bp->b_vp, bp->b_flags,
404 (intmax_t)bp->b_blkno,
405 (intmax_t)bp->b_lblkno);
406 BUF_LOCKPRINTINFO(bp);
407 if (show_busybufs > 1)
408 vn_printf(bp->b_vp,
409 "vnode content: ");
410 }
411 }
412 }
413 if (nbusy) {
414 /*
415 * Failed to sync all blocks. Indicate this and don't
416 * unmount filesystems (thus forcing an fsck on reboot).
417 */
418 printf("Giving up on %d buffers\n", nbusy);
419 DELAY(5000000); /* 5 seconds */
420 } else {
421 if (!first_buf_printf)
422 printf("Final sync complete\n");
423 /*
424 * Unmount filesystems
425 */
426 if (panicstr == 0)
427 vfs_unmountall();
428 }
429 swapoff_all();
430 DELAY(100000); /* wait for console output to finish */
431 }
432
433 print_uptime();
434
435 /*
436 * Ok, now do things that assume all filesystem activity has
437 * been completed.
438 */
439 EVENTHANDLER_INVOKE(shutdown_post_sync, howto);
440
441 if ((howto & (RB_HALT|RB_DUMP)) == RB_DUMP && !cold && !dumping)
442 doadump(TRUE);
443
444 /* Now that we're going to really halt the system... */
445 EVENTHANDLER_INVOKE(shutdown_final, howto);
446
447 for(;;) ; /* safety against shutdown_reset not working */
448 /* NOTREACHED */
449 }
450
451 /*
452 * If the shutdown was a clean halt, behave accordingly.
453 */
454 static void
455 shutdown_halt(void *junk, int howto)
456 {
457
458 if (howto & RB_HALT) {
459 printf("\n");
460 printf("The operating system has halted.\n");
461 printf("Please press any key to reboot.\n\n");
462 switch (cngetc()) {
463 case -1: /* No console, just die */
464 cpu_halt();
465 /* NOTREACHED */
466 default:
467 howto &= ~RB_HALT;
468 break;
469 }
470 }
471 }
472
473 /*
474 * Check to see if the system paniced, pause and then reboot
475 * according to the specified delay.
476 */
477 static void
478 shutdown_panic(void *junk, int howto)
479 {
480 int loop;
481
482 if (howto & RB_DUMP) {
483 if (PANIC_REBOOT_WAIT_TIME != 0) {
484 if (PANIC_REBOOT_WAIT_TIME != -1) {
485 printf("Automatic reboot in %d seconds - "
486 "press a key on the console to abort\n",
487 PANIC_REBOOT_WAIT_TIME);
488 for (loop = PANIC_REBOOT_WAIT_TIME * 10;
489 loop > 0; --loop) {
490 DELAY(1000 * 100); /* 1/10th second */
491 /* Did user type a key? */
492 if (cncheckc() != -1)
493 break;
494 }
495 if (!loop)
496 return;
497 }
498 } else { /* zero time specified - reboot NOW */
499 return;
500 }
501 printf("--> Press a key on the console to reboot,\n");
502 printf("--> or switch off the system now.\n");
503 cngetc();
504 }
505 }
506
507 /*
508 * Everything done, now reset
509 */
510 static void
511 shutdown_reset(void *junk, int howto)
512 {
513
514 printf("Rebooting...\n");
515 DELAY(1000000); /* wait 1 sec for printf's to complete and be read */
516
517 /*
518 * Acquiring smp_ipi_mtx here has a double effect:
519 * - it disables interrupts avoiding CPU0 preemption
520 * by fast handlers (thus deadlocking against other CPUs)
521 * - it avoids deadlocks against smp_rendezvous() or, more
522 * generally, threads busy-waiting, with this spinlock held,
523 * and waiting for responses by threads on other CPUs
524 * (ie. smp_tlb_shootdown()).
525 *
526 * For the !SMP case it just needs to handle the former problem.
527 */
528 #ifdef SMP
529 mtx_lock_spin(&smp_ipi_mtx);
530 #else
531 spinlock_enter();
532 #endif
533
534 /* cpu_boot(howto); */ /* doesn't do anything at the moment */
535 cpu_reset();
536 /* NOTREACHED */ /* assuming reset worked */
537 }
538
539 /*
540 * Panic is called on unresolvable fatal errors. It prints "panic: mesg",
541 * and then reboots. If we are called twice, then we avoid trying to sync
542 * the disks as this often leads to recursive panics.
543 */
544 void
545 panic(const char *fmt, ...)
546 {
547 #ifdef SMP
548 static volatile u_int panic_cpu = NOCPU;
549 #endif
550 struct thread *td = curthread;
551 int bootopt, newpanic;
552 va_list ap;
553 static char buf[256];
554
555 critical_enter();
556 #ifdef SMP
557 /*
558 * We don't want multiple CPU's to panic at the same time, so we
559 * use panic_cpu as a simple spinlock. We have to keep checking
560 * panic_cpu if we are spinning in case the panic on the first
561 * CPU is canceled.
562 */
563 if (panic_cpu != PCPU_GET(cpuid))
564 while (atomic_cmpset_int(&panic_cpu, NOCPU,
565 PCPU_GET(cpuid)) == 0)
566 while (panic_cpu != NOCPU)
567 ; /* nothing */
568 #endif
569
570 bootopt = RB_AUTOBOOT;
571 newpanic = 0;
572 if (panicstr)
573 bootopt |= RB_NOSYNC;
574 else {
575 bootopt |= RB_DUMP;
576 panicstr = fmt;
577 newpanic = 1;
578 }
579
580 va_start(ap, fmt);
581 if (newpanic) {
582 (void)vsnprintf(buf, sizeof(buf), fmt, ap);
583 panicstr = buf;
584 printf("panic: %s\n", buf);
585 } else {
586 printf("panic: ");
587 vprintf(fmt, ap);
588 printf("\n");
589 }
590 va_end(ap);
591 #ifdef SMP
592 printf("cpuid = %d\n", PCPU_GET(cpuid));
593 #endif
594
595 #ifdef KDB
596 if (newpanic && trace_on_panic)
597 kdb_backtrace();
598 if (debugger_on_panic)
599 kdb_enter(KDB_WHY_PANIC, "panic");
600 #endif
601 /*thread_lock(td); */
602 td->td_flags |= TDF_INPANIC;
603 /* thread_unlock(td); */
604 if (!sync_on_panic)
605 bootopt |= RB_NOSYNC;
606 critical_exit();
607 kern_reboot(bootopt);
608 }
609
610 /*
611 * Support for poweroff delay.
612 *
613 * Please note that setting this delay too short might power off your machine
614 * before the write cache on your hard disk has been flushed, leading to
615 * soft-updates inconsistencies.
616 */
617 #ifndef POWEROFF_DELAY
618 # define POWEROFF_DELAY 5000
619 #endif
620 static int poweroff_delay = POWEROFF_DELAY;
621
622 SYSCTL_INT(_kern_shutdown, OID_AUTO, poweroff_delay, CTLFLAG_RW,
623 &poweroff_delay, 0, "");
624
625 static void
626 poweroff_wait(void *junk, int howto)
627 {
628
629 if (!(howto & RB_POWEROFF) || poweroff_delay <= 0)
630 return;
631 DELAY(poweroff_delay * 1000);
632 }
633
634 /*
635 * Some system processes (e.g. syncer) need to be stopped at appropriate
636 * points in their main loops prior to a system shutdown, so that they
637 * won't interfere with the shutdown process (e.g. by holding a disk buf
638 * to cause sync to fail). For each of these system processes, register
639 * shutdown_kproc() as a handler for one of shutdown events.
640 */
641 static int kproc_shutdown_wait = 60;
642 SYSCTL_INT(_kern_shutdown, OID_AUTO, kproc_shutdown_wait, CTLFLAG_RW,
643 &kproc_shutdown_wait, 0, "");
644
645 void
646 kproc_shutdown(void *arg, int howto)
647 {
648 struct proc *p;
649 int error;
650
651 if (panicstr)
652 return;
653
654 p = (struct proc *)arg;
655 printf("Waiting (max %d seconds) for system process `%s' to stop...",
656 kproc_shutdown_wait, p->p_comm);
657 error = kproc_suspend(p, kproc_shutdown_wait * hz);
658
659 if (error == EWOULDBLOCK)
660 printf("timed out\n");
661 else
662 printf("done\n");
663 }
664
665 void
666 kthread_shutdown(void *arg, int howto)
667 {
668 struct thread *td;
669 int error;
670
671 if (panicstr)
672 return;
673
674 td = (struct thread *)arg;
675 printf("Waiting (max %d seconds) for system thread `%s' to stop...",
676 kproc_shutdown_wait, td->td_name);
677 error = kthread_suspend(td, kproc_shutdown_wait * hz);
678
679 if (error == EWOULDBLOCK)
680 printf("timed out\n");
681 else
682 printf("done\n");
683 }
684
685 /* Registration of dumpers */
686 int
687 set_dumper(struct dumperinfo *di)
688 {
689
690 if (di == NULL) {
691 bzero(&dumper, sizeof dumper);
692 return (0);
693 }
694 if (dumper.dumper != NULL)
695 return (EBUSY);
696 dumper = *di;
697 return (0);
698 }
699
700 /* Call dumper with bounds checking. */
701 int
702 dump_write(struct dumperinfo *di, void *virtual, vm_offset_t physical,
703 off_t offset, size_t length)
704 {
705
706 if (length != 0 && (offset < di->mediaoffset ||
707 offset - di->mediaoffset + length > di->mediasize)) {
708 printf("Attempt to write outside dump device boundaries.\n"
709 "offset(%jd), mediaoffset(%jd), length(%ju), mediasize(%jd).\n",
710 (intmax_t)offset, (intmax_t)di->mediaoffset,
711 (uintmax_t)length, (intmax_t)di->mediasize);
712 return (ENOSPC);
713 }
714 return (di->dumper(di->priv, virtual, physical, offset, length));
715 }
716
717 void
718 mkdumpheader(struct kerneldumpheader *kdh, char *magic, uint32_t archver,
719 uint64_t dumplen, uint32_t blksz)
720 {
721
722 bzero(kdh, sizeof(*kdh));
723 strncpy(kdh->magic, magic, sizeof(kdh->magic));
724 strncpy(kdh->architecture, MACHINE_ARCH, sizeof(kdh->architecture));
725 kdh->version = htod32(KERNELDUMPVERSION);
726 kdh->architectureversion = htod32(archver);
727 kdh->dumplength = htod64(dumplen);
728 kdh->dumptime = htod64(time_second);
729 kdh->blocksize = htod32(blksz);
730 strncpy(kdh->hostname, prison0.pr_hostname, sizeof(kdh->hostname));
731 strncpy(kdh->versionstring, version, sizeof(kdh->versionstring));
732 if (panicstr != NULL)
733 strncpy(kdh->panicstring, panicstr, sizeof(kdh->panicstring));
734 kdh->parity = kerneldump_parity(kdh);
735 }
Cache object: 58ecf4f4bf42a5fcf4b8967c75e8ee3f
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