1 /* $OpenBSD: init_main.c,v 1.140 2007/05/16 17:27:30 art Exp $ */ 2 /* $NetBSD: init_main.c,v 1.84.4.1 1996/06/02 09:08:06 mrg Exp $ */ 3 4 /* 5 * Copyright (c) 1995 Christopher G. Demetriou. All rights reserved. 6 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * (c) UNIX System Laboratories, Inc. 9 * All or some portions of this file are derived from material licensed 10 * to the University of California by American Telephone and Telegraph 11 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 12 * the permission of UNIX System Laboratories, Inc. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)init_main.c 8.9 (Berkeley) 1/21/94 39 */ 40 41 #include <sys/param.h> 42 #include <sys/filedesc.h> 43 #include <sys/file.h> 44 #include <sys/errno.h> 45 #include <sys/exec.h> 46 #include <sys/kernel.h> 47 #include <sys/kthread.h> 48 #include <sys/mount.h> 49 #include <sys/proc.h> 50 #include <sys/resourcevar.h> 51 #include <sys/signalvar.h> 52 #include <sys/systm.h> 53 #include <sys/namei.h> 54 #include <sys/vnode.h> 55 #include <sys/tty.h> 56 #include <sys/conf.h> 57 #include <sys/buf.h> 58 #include <sys/device.h> 59 #include <sys/socketvar.h> 60 #include <sys/lockf.h> 61 #include <sys/protosw.h> 62 #include <sys/reboot.h> 63 #include <sys/user.h> 64 #ifdef SYSVSHM 65 #include <sys/shm.h> 66 #endif 67 #ifdef SYSVSEM 68 #include <sys/sem.h> 69 #endif 70 #ifdef SYSVMSG 71 #include <sys/msg.h> 72 #endif 73 #include <sys/domain.h> 74 #include <sys/mbuf.h> 75 #include <sys/pipe.h> 76 77 #include <sys/syscall.h> 78 #include <sys/syscallargs.h> 79 80 #include <dev/rndvar.h> 81 82 #include <ufs/ufs/quota.h> 83 84 #include <machine/cpu.h> 85 86 #include <uvm/uvm.h> 87 88 #include <net/if.h> 89 #include <net/raw_cb.h> 90 91 #if defined(CRYPTO) 92 #include <crypto/cryptodev.h> 93 #include <crypto/cryptosoft.h> 94 #endif 95 96 #if defined(NFSSERVER) || defined(NFSCLIENT) 97 extern void nfs_init(void); 98 #endif 99 100 #include "softraid.h" 101 102 const char copyright[] = 103 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n" 104 "\tThe Regents of the University of California. All rights reserved.\n" 105 "Copyright (c) 1995-2007 OpenBSD. All rights reserved. http://www.OpenBSD.org\n"; 106 107 /* Components of the first process -- never freed. */ 108 struct session session0; 109 struct pgrp pgrp0; 110 struct proc proc0; 111 struct process process0; 112 struct pcred cred0; 113 struct plimit limit0; 114 struct vmspace vmspace0; 115 struct sigacts sigacts0; 116 struct proc *initproc; 117 118 int cmask = CMASK; 119 extern struct user *proc0paddr; 120 121 void (*md_diskconf)(void) = NULL; 122 struct vnode *rootvp, *swapdev_vp; 123 int boothowto; 124 struct timeval boottime; 125 int ncpus = 1; 126 __volatile int start_init_exec; /* semaphore for start_init() */ 127 128 #if !defined(NO_PROPOLICE) 129 long __guard[8]; 130 #endif 131 132 /* XXX return int so gcc -Werror won't complain */ 133 int main(void *); 134 void check_console(struct proc *); 135 void start_init(void *); 136 void start_cleaner(void *); 137 void start_update(void *); 138 void start_reaper(void *); 139 void start_crypto(void *); 140 void init_exec(void); 141 void kqueue_init(void); 142 143 extern char sigcode[], esigcode[]; 144 #ifdef SYSCALL_DEBUG 145 extern char *syscallnames[]; 146 #endif 147 148 struct emul emul_native = { 149 "native", 150 NULL, 151 sendsig, 152 SYS_syscall, 153 SYS_MAXSYSCALL, 154 sysent, 155 #ifdef SYSCALL_DEBUG 156 syscallnames, 157 #else 158 NULL, 159 #endif 160 0, 161 copyargs, 162 setregs, 163 NULL, 164 sigcode, 165 esigcode, 166 EMUL_ENABLED | EMUL_NATIVE, 167 }; 168 169 170 /* 171 * System startup; initialize the world, create process 0, mount root 172 * filesystem, and fork to create init and pagedaemon. Most of the 173 * hard work is done in the lower-level initialization routines including 174 * startup(), which does memory initialization and autoconfiguration. 175 */ 176 /* XXX return int, so gcc -Werror won't complain */ 177 int 178 main(void *framep) 179 { 180 struct proc *p; 181 struct pdevinit *pdev; 182 struct timeval rtv; 183 quad_t lim; 184 int s, i; 185 extern struct pdevinit pdevinit[]; 186 extern void scheduler_start(void); 187 extern void disk_init(void); 188 extern void endtsleep(void *); 189 extern void realitexpire(void *); 190 191 /* 192 * Initialize the current process pointer (curproc) before 193 * any possible traps/probes to simplify trap processing. 194 */ 195 curproc = p = &proc0; 196 p->p_cpu = curcpu(); 197 198 /* 199 * Initialize timeouts. 200 */ 201 timeout_startup(); 202 203 /* 204 * Attempt to find console and initialize 205 * in case of early panic or other messages. 206 */ 207 config_init(); /* init autoconfiguration data structures */ 208 consinit(); 209 210 printf("%s\n", copyright); 211 212 KERNEL_LOCK_INIT(); 213 214 uvm_init(); 215 disk_init(); /* must come before autoconfiguration */ 216 tty_init(); /* initialise tty's */ 217 cpu_startup(); 218 219 /* 220 * Initialize mbuf's. Do this now because we might attempt to 221 * allocate mbufs or mbuf clusters during autoconfiguration. 222 */ 223 mbinit(); 224 225 /* Initialize sockets. */ 226 soinit(); 227 228 /* 229 * Initialize process and pgrp structures. 230 */ 231 procinit(); 232 233 /* Initialize file locking. */ 234 lf_init(); 235 236 /* 237 * Initialize filedescriptors. 238 */ 239 filedesc_init(); 240 241 /* 242 * Initialize pipes. 243 */ 244 pipe_init(); 245 246 /* 247 * Initialize kqueues. 248 */ 249 kqueue_init(); 250 251 /* 252 * Create process 0 (the swapper). 253 */ 254 255 process0.ps_mainproc = p; 256 TAILQ_INIT(&process0.ps_threads); 257 TAILQ_INSERT_TAIL(&process0.ps_threads, p, p_thr_link); 258 p->p_p = &process0; 259 260 LIST_INSERT_HEAD(&allproc, p, p_list); 261 p->p_pgrp = &pgrp0; 262 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash); 263 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 264 LIST_INIT(&pgrp0.pg_members); 265 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); 266 267 pgrp0.pg_session = &session0; 268 session0.s_count = 1; 269 session0.s_leader = p; 270 271 atomic_setbits_int(&p->p_flag, P_SYSTEM | P_NOCLDWAIT); 272 p->p_stat = SONPROC; 273 p->p_nice = NZERO; 274 p->p_emul = &emul_native; 275 bcopy("swapper", p->p_comm, sizeof ("swapper")); 276 277 /* Init timeouts. */ 278 timeout_set(&p->p_sleep_to, endtsleep, p); 279 timeout_set(&p->p_realit_to, realitexpire, p); 280 281 /* Create credentials. */ 282 cred0.p_refcnt = 1; 283 p->p_cred = &cred0; 284 p->p_ucred = crget(); 285 p->p_ucred->cr_ngroups = 1; /* group 0 */ 286 287 /* Initialize signal state for process 0. */ 288 signal_init(); 289 p->p_sigacts = &sigacts0; 290 siginit(p); 291 292 /* Create the file descriptor table. */ 293 p->p_fd = fdinit(NULL); 294 295 TAILQ_INIT(&p->p_selects); 296 297 /* Create the limits structures. */ 298 p->p_p->ps_limit = &limit0; 299 for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++) 300 limit0.pl_rlimit[i].rlim_cur = 301 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; 302 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE; 303 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = MIN(NOFILE_MAX, 304 (maxfiles - NOFILE > NOFILE) ? maxfiles - NOFILE : NOFILE); 305 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC; 306 lim = ptoa(uvmexp.free); 307 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = lim; 308 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = lim; 309 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = lim / 3; 310 limit0.p_refcnt = 1; 311 312 /* Allocate a prototype map so we have something to fork. */ 313 uvmspace_init(&vmspace0, pmap_kernel(), round_page(VM_MIN_ADDRESS), 314 trunc_page(VM_MAX_ADDRESS), TRUE); 315 p->p_vmspace = &vmspace0; 316 317 p->p_addr = proc0paddr; /* XXX */ 318 319 /* 320 * We continue to place resource usage info in the 321 * user struct so they're pageable. 322 */ 323 p->p_stats = &p->p_addr->u_stats; 324 325 /* 326 * Charge root for one process. 327 */ 328 (void)chgproccnt(0, 1); 329 330 /* Initialize run queues */ 331 rqinit(); 332 333 /* Configure the devices */ 334 cpu_configure(); 335 336 /* Configure virtual memory system, set vm rlimits. */ 337 uvm_init_limits(p); 338 339 /* Initialize the file systems. */ 340 #if defined(NFSSERVER) || defined(NFSCLIENT) 341 nfs_init(); /* initialize server/shared data */ 342 #endif 343 vfsinit(); 344 345 /* Start real time and statistics clocks. */ 346 initclocks(); 347 348 /* Lock the kernel on behalf of proc0. */ 349 KERNEL_PROC_LOCK(p); 350 351 #ifdef SYSVSHM 352 /* Initialize System V style shared memory. */ 353 shminit(); 354 #endif 355 356 #ifdef SYSVSEM 357 /* Initialize System V style semaphores. */ 358 seminit(); 359 #endif 360 361 #ifdef SYSVMSG 362 /* Initialize System V style message queues. */ 363 msginit(); 364 #endif 365 366 /* Attach pseudo-devices. */ 367 randomattach(); 368 for (pdev = pdevinit; pdev->pdev_attach != NULL; pdev++) 369 if (pdev->pdev_count > 0) 370 (*pdev->pdev_attach)(pdev->pdev_count); 371 372 #ifdef CRYPTO 373 swcr_init(); 374 #endif /* CRYPTO */ 375 376 /* 377 * Initialize protocols. Block reception of incoming packets 378 * until everything is ready. 379 */ 380 s = splnet(); 381 ifinit(); 382 domaininit(); 383 if_attachdomain(); 384 splx(s); 385 386 #ifdef GPROF 387 /* Initialize kernel profiling. */ 388 kmstartup(); 389 #endif 390 391 #if !defined(NO_PROPOLICE) 392 { 393 volatile long newguard[8]; 394 int i; 395 396 arc4random_bytes((long *)newguard, sizeof(newguard)); 397 398 for (i = sizeof(__guard)/sizeof(__guard[0]) - 1; i; i--) 399 __guard[i] = newguard[i]; 400 } 401 #endif 402 403 /* init exec and emul */ 404 init_exec(); 405 406 /* Start the scheduler */ 407 scheduler_start(); 408 409 /* 410 * Create process 1 (init(8)). We do this now, as Unix has 411 * historically had init be process 1, and changing this would 412 * probably upset a lot of people. 413 * 414 * Note that process 1 won't immediately exec init(8), but will 415 * wait for us to inform it that the root file system has been 416 * mounted. 417 */ 418 if (fork1(p, SIGCHLD, FORK_FORK, NULL, 0, start_init, NULL, NULL, 419 &initproc)) 420 panic("fork init"); 421 422 /* 423 * Create any kernel threads whose creation was deferred because 424 * initproc had not yet been created. 425 */ 426 kthread_run_deferred_queue(); 427 428 /* 429 * Now that device driver threads have been created, wait for 430 * them to finish any deferred autoconfiguration. Note we don't 431 * need to lock this semaphore, since we haven't booted any 432 * secondary processors, yet. 433 */ 434 while (config_pending) 435 (void) tsleep((void *)&config_pending, PWAIT, "cfpend", 0); 436 437 dostartuphooks(); 438 439 #if NSOFTRAID > 0 440 config_rootfound("softraid", NULL); 441 #endif 442 443 /* Configure root/swap devices */ 444 if (md_diskconf) 445 (*md_diskconf)(); 446 447 /* Mount the root file system. */ 448 if (vfs_mountroot()) 449 panic("cannot mount root"); 450 CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 451 452 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 453 if (VFS_ROOT(CIRCLEQ_FIRST(&mountlist), &rootvnode)) 454 panic("cannot find root vnode"); 455 p->p_fd->fd_cdir = rootvnode; 456 VREF(p->p_fd->fd_cdir); 457 VOP_UNLOCK(rootvnode, 0, p); 458 p->p_fd->fd_rdir = NULL; 459 460 /* 461 * Now that root is mounted, we can fixup initproc's CWD 462 * info. All other processes are kthreads, which merely 463 * share proc0's CWD info. 464 */ 465 initproc->p_fd->fd_cdir = rootvnode; 466 VREF(initproc->p_fd->fd_cdir); 467 initproc->p_fd->fd_rdir = NULL; 468 469 /* 470 * Now can look at time, having had a chance to verify the time 471 * from the file system. Reset p->p_rtime as it may have been 472 * munched in mi_switch() after the time got set. 473 */ 474 #ifdef __HAVE_TIMECOUNTER 475 microtime(&boottime); 476 #else 477 boottime = mono_time = time; 478 #endif 479 LIST_FOREACH(p, &allproc, p_list) { 480 p->p_stats->p_start = boottime; 481 microuptime(&p->p_cpu->ci_schedstate.spc_runtime); 482 p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; 483 } 484 485 uvm_swap_init(); 486 487 /* Create the pageout daemon kernel thread. */ 488 if (kthread_create(uvm_pageout, NULL, NULL, "pagedaemon")) 489 panic("fork pagedaemon"); 490 491 /* Create the reaper daemon kernel thread. */ 492 if (kthread_create(start_reaper, NULL, NULL, "reaper")) 493 panic("fork reaper"); 494 495 /* Create the cleaner daemon kernel thread. */ 496 if (kthread_create(start_cleaner, NULL, NULL, "cleaner")) 497 panic("fork cleaner"); 498 499 /* Create the update daemon kernel thread. */ 500 if (kthread_create(start_update, NULL, NULL, "update")) 501 panic("fork update"); 502 503 /* Create the aiodone daemon kernel thread. */ 504 if (kthread_create(uvm_aiodone_daemon, NULL, NULL, "aiodoned")) 505 panic("fork aiodoned"); 506 507 #ifdef CRYPTO 508 /* Create the crypto kernel thread. */ 509 if (kthread_create(start_crypto, NULL, NULL, "crypto")) 510 panic("crypto thread"); 511 #endif /* CRYPTO */ 512 513 microtime(&rtv); 514 srandom((u_long)(rtv.tv_sec ^ rtv.tv_usec)); 515 516 randompid = 1; 517 518 #if defined(MULTIPROCESSOR) 519 /* Boot the secondary processors. */ 520 cpu_boot_secondary_processors(); 521 #endif 522 523 domountroothooks(); 524 525 /* 526 * Okay, now we can let init(8) exec! It's off to userland! 527 */ 528 start_init_exec = 1; 529 wakeup((void *)&start_init_exec); 530 531 /* The scheduler is an infinite loop. */ 532 uvm_scheduler(); 533 /* NOTREACHED */ 534 } 535 536 /* 537 * List of paths to try when searching for "init". 538 */ 539 static char *initpaths[] = { 540 "/sbin/init", 541 "/sbin/oinit", 542 "/sbin/init.bak", 543 NULL, 544 }; 545 546 void 547 check_console(struct proc *p) 548 { 549 struct nameidata nd; 550 int error; 551 552 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", p); 553 error = namei(&nd); 554 if (error) { 555 if (error == ENOENT) 556 printf("warning: /dev/console does not exist\n"); 557 else 558 printf("warning: /dev/console error %d\n", error); 559 } else 560 vrele(nd.ni_vp); 561 } 562 563 /* 564 * Start the initial user process; try exec'ing each pathname in "initpaths". 565 * The program is invoked with one argument containing the boot flags. 566 */ 567 void 568 start_init(void *arg) 569 { 570 struct proc *p = arg; 571 vaddr_t addr; 572 struct sys_execve_args /* { 573 syscallarg(const char *) path; 574 syscallarg(char *const *) argp; 575 syscallarg(char *const *) envp; 576 } */ args; 577 int options, error; 578 long i; 579 register_t retval[2]; 580 char flags[4], *flagsp; 581 char **pathp, *path, *ucp, **uap, *arg0, *arg1 = NULL; 582 583 /* 584 * Now in process 1. 585 */ 586 587 /* 588 * Wait for main() to tell us that it's safe to exec. 589 */ 590 while (start_init_exec == 0) 591 (void) tsleep((void *)&start_init_exec, PWAIT, "initexec", 0); 592 593 check_console(p); 594 595 /* 596 * Need just enough stack to hold the faked-up "execve()" arguments. 597 */ 598 #ifdef MACHINE_STACK_GROWS_UP 599 addr = USRSTACK; 600 #else 601 addr = USRSTACK - PAGE_SIZE; 602 #endif 603 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 604 NULL, UVM_UNKNOWN_OFFSET, 0, 605 UVM_MAPFLAG(UVM_PROT_RW, UVM_PROT_ALL, UVM_INH_COPY, 606 UVM_ADV_NORMAL, UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW))) 607 panic("init: couldn't allocate argument space"); 608 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 609 610 for (pathp = &initpaths[0]; (path = *pathp) != NULL; pathp++) { 611 #ifdef MACHINE_STACK_GROWS_UP 612 ucp = (char *)addr; 613 #else 614 ucp = (char *)(addr + PAGE_SIZE); 615 #endif 616 /* 617 * Construct the boot flag argument. 618 */ 619 flagsp = flags; 620 *flagsp++ = '-'; 621 options = 0; 622 623 if (boothowto & RB_SINGLE) { 624 *flagsp++ = 's'; 625 options = 1; 626 } 627 #ifdef notyet 628 if (boothowto & RB_FASTBOOT) { 629 *flagsp++ = 'f'; 630 options = 1; 631 } 632 #endif 633 634 /* 635 * Move out the flags (arg 1), if necessary. 636 */ 637 if (options != 0) { 638 *flagsp++ = '\0'; 639 i = flagsp - flags; 640 #ifdef DEBUG 641 printf("init: copying out flags `%s' %d\n", flags, i); 642 #endif 643 #ifdef MACHINE_STACK_GROWS_UP 644 arg1 = ucp; 645 (void)copyout((caddr_t)flags, (caddr_t)ucp, i); 646 ucp += i; 647 #else 648 (void)copyout((caddr_t)flags, (caddr_t)(ucp -= i), i); 649 arg1 = ucp; 650 #endif 651 } 652 653 /* 654 * Move out the file name (also arg 0). 655 */ 656 i = strlen(path) + 1; 657 #ifdef DEBUG 658 printf("init: copying out path `%s' %d\n", path, i); 659 #endif 660 #ifdef MACHINE_STACK_GROWS_UP 661 arg0 = ucp; 662 (void)copyout((caddr_t)path, (caddr_t)ucp, i); 663 ucp += i; 664 ucp = (caddr_t)ALIGN((u_long)ucp); 665 uap = (char **)ucp + 3; 666 #else 667 (void)copyout((caddr_t)path, (caddr_t)(ucp -= i), i); 668 arg0 = ucp; 669 uap = (char **)((u_long)ucp & ~ALIGNBYTES); 670 #endif 671 672 /* 673 * Move out the arg pointers. 674 */ 675 i = 0; 676 copyout(&i, (caddr_t)--uap, sizeof(register_t)); /* terminator */ 677 if (options != 0) 678 copyout(&arg1, (caddr_t)--uap, sizeof(register_t)); 679 copyout(&arg0, (caddr_t)--uap, sizeof(register_t)); 680 681 /* 682 * Point at the arguments. 683 */ 684 SCARG(&args, path) = arg0; 685 SCARG(&args, argp) = uap; 686 SCARG(&args, envp) = NULL; 687 688 /* 689 * Now try to exec the program. If can't for any reason 690 * other than it doesn't exist, complain. 691 */ 692 if ((error = sys_execve(p, &args, retval)) == 0) { 693 KERNEL_PROC_UNLOCK(p); 694 return; 695 } 696 if (error != ENOENT) 697 printf("exec %s: error %d\n", path, error); 698 } 699 printf("init: not found\n"); 700 panic("no init"); 701 } 702 703 void 704 start_update(void *arg) 705 { 706 sched_sync(curproc); 707 /* NOTREACHED */ 708 } 709 710 void 711 start_cleaner(void *arg) 712 { 713 buf_daemon(curproc); 714 /* NOTREACHED */ 715 } 716 717 void 718 start_reaper(void *arg) 719 { 720 reaper(); 721 /* NOTREACHED */ 722 } 723 724 #ifdef CRYPTO 725 void 726 start_crypto(void *arg) 727 { 728 crypto_thread(); 729 /* NOTREACHED */ 730 } 731 #endif /* CRYPTO */ 732