1 /* $OpenBSD: init_main.c,v 1.134 2007/01/12 07:41:31 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 const char copyright[] = 101 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n" 102 "\tThe Regents of the University of California. All rights reserved.\n" 103 "Copyright (c) 1995-2007 OpenBSD. All rights reserved. http://www.OpenBSD.org\n"; 104 105 /* Components of the first process -- never freed. */ 106 struct session session0; 107 struct pgrp pgrp0; 108 struct proc proc0; 109 struct pcred cred0; 110 struct plimit limit0; 111 struct vmspace vmspace0; 112 struct sigacts sigacts0; 113 #if !defined(__HAVE_CPUINFO) && !defined(curproc) 114 struct proc *curproc; 115 #endif 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 #ifndef __HAVE_CPUINFO 126 struct timeval runtime; 127 #endif 128 int ncpus = 1; 129 __volatile int start_init_exec; /* semaphore for start_init() */ 130 131 #if !defined(NO_PROPOLICE) 132 long __guard[8]; 133 #endif 134 135 /* XXX return int so gcc -Werror won't complain */ 136 int main(void *); 137 void check_console(struct proc *); 138 void start_init(void *); 139 void start_cleaner(void *); 140 void start_update(void *); 141 void start_reaper(void *); 142 void start_crypto(void *); 143 void init_exec(void); 144 void kqueue_init(void); 145 146 extern char sigcode[], esigcode[]; 147 #ifdef SYSCALL_DEBUG 148 extern char *syscallnames[]; 149 #endif 150 151 struct emul emul_native = { 152 "native", 153 NULL, 154 sendsig, 155 SYS_syscall, 156 SYS_MAXSYSCALL, 157 sysent, 158 #ifdef SYSCALL_DEBUG 159 syscallnames, 160 #else 161 NULL, 162 #endif 163 0, 164 copyargs, 165 setregs, 166 NULL, 167 sigcode, 168 esigcode, 169 EMUL_ENABLED | EMUL_NATIVE, 170 }; 171 172 173 /* 174 * System startup; initialize the world, create process 0, mount root 175 * filesystem, and fork to create init and pagedaemon. Most of the 176 * hard work is done in the lower-level initialization routines including 177 * startup(), which does memory initialization and autoconfiguration. 178 */ 179 /* XXX return int, so gcc -Werror won't complain */ 180 int 181 main(void *framep) 182 { 183 struct proc *p; 184 struct pdevinit *pdev; 185 struct timeval rtv; 186 quad_t lim; 187 int s, i; 188 extern struct pdevinit pdevinit[]; 189 extern void scheduler_start(void); 190 extern void disk_init(void); 191 extern void endtsleep(void *); 192 extern void realitexpire(void *); 193 194 /* 195 * Initialize the current process pointer (curproc) before 196 * any possible traps/probes to simplify trap processing. 197 */ 198 curproc = p = &proc0; 199 #ifdef __HAVE_CPUINFO 200 p->p_cpu = curcpu(); 201 #endif 202 203 /* 204 * Initialize timeouts. 205 */ 206 timeout_startup(); 207 208 /* 209 * Attempt to find console and initialize 210 * in case of early panic or other messages. 211 */ 212 config_init(); /* init autoconfiguration data structures */ 213 consinit(); 214 215 printf("%s\n", copyright); 216 217 KERNEL_LOCK_INIT(); 218 219 uvm_init(); 220 disk_init(); /* must come before autoconfiguration */ 221 tty_init(); /* initialise tty's */ 222 cpu_startup(); 223 224 /* 225 * Initialize mbuf's. Do this now because we might attempt to 226 * allocate mbufs or mbuf clusters during autoconfiguration. 227 */ 228 mbinit(); 229 230 /* Initialize sockets. */ 231 soinit(); 232 233 /* 234 * Initialize process and pgrp structures. 235 */ 236 procinit(); 237 238 /* Initialize file locking. */ 239 lf_init(); 240 241 /* 242 * Initialize filedescriptors. 243 */ 244 filedesc_init(); 245 246 /* 247 * Initialize pipes. 248 */ 249 pipe_init(); 250 251 /* 252 * Initialize kqueues. 253 */ 254 kqueue_init(); 255 256 /* 257 * Create process 0 (the swapper). 258 */ 259 LIST_INSERT_HEAD(&allproc, p, p_list); 260 p->p_pgrp = &pgrp0; 261 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash); 262 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 263 LIST_INIT(&pgrp0.pg_members); 264 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); 265 266 pgrp0.pg_session = &session0; 267 session0.s_count = 1; 268 session0.s_leader = p; 269 270 p->p_thrparent = p; 271 LIST_INIT(&p->p_thrchildren); 272 273 p->p_flag = P_SYSTEM | P_NOCLDWAIT; 274 p->p_stat = SONPROC; 275 p->p_nice = NZERO; 276 p->p_emul = &emul_native; 277 bcopy("swapper", p->p_comm, sizeof ("swapper")); 278 279 /* Init timeouts. */ 280 timeout_set(&p->p_sleep_to, endtsleep, p); 281 timeout_set(&p->p_realit_to, realitexpire, p); 282 283 /* Create credentials. */ 284 cred0.p_refcnt = 1; 285 p->p_cred = &cred0; 286 p->p_ucred = crget(); 287 p->p_ucred->cr_ngroups = 1; /* group 0 */ 288 289 /* Initialize signal state for process 0. */ 290 signal_init(); 291 p->p_sigacts = &sigacts0; 292 siginit(p); 293 294 /* Create the file descriptor table. */ 295 p->p_fd = fdinit(NULL); 296 297 /* Create the limits structures. */ 298 p->p_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 /* Configure root/swap devices */ 440 if (md_diskconf) 441 (*md_diskconf)(); 442 443 /* Mount the root file system. */ 444 if (vfs_mountroot()) 445 panic("cannot mount root"); 446 CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 447 448 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 449 if (VFS_ROOT(CIRCLEQ_FIRST(&mountlist), &rootvnode)) 450 panic("cannot find root vnode"); 451 p->p_fd->fd_cdir = rootvnode; 452 VREF(p->p_fd->fd_cdir); 453 VOP_UNLOCK(rootvnode, 0, p); 454 p->p_fd->fd_rdir = NULL; 455 456 /* 457 * Now that root is mounted, we can fixup initproc's CWD 458 * info. All other processes are kthreads, which merely 459 * share proc0's CWD info. 460 */ 461 initproc->p_fd->fd_cdir = rootvnode; 462 VREF(initproc->p_fd->fd_cdir); 463 initproc->p_fd->fd_rdir = NULL; 464 465 /* 466 * Now can look at time, having had a chance to verify the time 467 * from the file system. Reset p->p_rtime as it may have been 468 * munched in mi_switch() after the time got set. 469 */ 470 #ifdef __HAVE_TIMECOUNTER 471 microtime(&boottime); 472 #else 473 boottime = mono_time = time; 474 #endif 475 #ifndef __HAVE_CPUINFO 476 microuptime(&runtime); 477 #endif 478 LIST_FOREACH(p, &allproc, p_list) { 479 p->p_stats->p_start = boottime; 480 #ifdef __HAVE_CPUINFO 481 microuptime(&p->p_cpu->ci_schedstate.spc_runtime); 482 #endif 483 p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; 484 } 485 486 uvm_swap_init(); 487 488 /* Create the pageout daemon kernel thread. */ 489 if (kthread_create(uvm_pageout, NULL, NULL, "pagedaemon")) 490 panic("fork pagedaemon"); 491 492 /* Create the reaper daemon kernel thread. */ 493 if (kthread_create(start_reaper, NULL, NULL, "reaper")) 494 panic("fork reaper"); 495 496 /* Create the cleaner daemon kernel thread. */ 497 if (kthread_create(start_cleaner, NULL, NULL, "cleaner")) 498 panic("fork cleaner"); 499 500 /* Create the update daemon kernel thread. */ 501 if (kthread_create(start_update, NULL, NULL, "update")) 502 panic("fork update"); 503 504 /* Create the aiodone daemon kernel thread. */ 505 if (kthread_create(uvm_aiodone_daemon, NULL, NULL, "aiodoned")) 506 panic("fork aiodoned"); 507 508 #ifdef CRYPTO 509 /* Create the crypto kernel thread. */ 510 if (kthread_create(start_crypto, NULL, NULL, "crypto")) 511 panic("crypto thread"); 512 #endif /* CRYPTO */ 513 514 microtime(&rtv); 515 srandom((u_long)(rtv.tv_sec ^ rtv.tv_usec)); 516 517 randompid = 1; 518 519 #if defined(MULTIPROCESSOR) 520 /* Boot the secondary processors. */ 521 cpu_boot_secondary_processors(); 522 #endif 523 524 domountroothooks(); 525 526 /* 527 * Okay, now we can let init(8) exec! It's off to userland! 528 */ 529 start_init_exec = 1; 530 wakeup((void *)&start_init_exec); 531 532 /* The scheduler is an infinite loop. */ 533 uvm_scheduler(); 534 /* NOTREACHED */ 535 } 536 537 /* 538 * List of paths to try when searching for "init". 539 */ 540 static char *initpaths[] = { 541 "/sbin/init", 542 "/sbin/oinit", 543 "/sbin/init.bak", 544 NULL, 545 }; 546 547 void 548 check_console(struct proc *p) 549 { 550 struct nameidata nd; 551 int error; 552 553 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", p); 554 error = namei(&nd); 555 if (error) { 556 if (error == ENOENT) 557 printf("warning: /dev/console does not exist\n"); 558 else 559 printf("warning: /dev/console error %d\n", error); 560 } else 561 vrele(nd.ni_vp); 562 } 563 564 /* 565 * Start the initial user process; try exec'ing each pathname in "initpaths". 566 * The program is invoked with one argument containing the boot flags. 567 */ 568 void 569 start_init(void *arg) 570 { 571 struct proc *p = arg; 572 vaddr_t addr; 573 struct sys_execve_args /* { 574 syscallarg(const char *) path; 575 syscallarg(char *const *) argp; 576 syscallarg(char *const *) envp; 577 } */ args; 578 int options, error; 579 long i; 580 register_t retval[2]; 581 char flags[4], *flagsp; 582 char **pathp, *path, *ucp, **uap, *arg0, *arg1 = NULL; 583 584 /* 585 * Now in process 1. 586 */ 587 588 /* 589 * Wait for main() to tell us that it's safe to exec. 590 */ 591 while (start_init_exec == 0) 592 (void) tsleep((void *)&start_init_exec, PWAIT, "initexec", 0); 593 594 check_console(p); 595 596 /* 597 * Need just enough stack to hold the faked-up "execve()" arguments. 598 */ 599 #ifdef MACHINE_STACK_GROWS_UP 600 addr = USRSTACK; 601 #else 602 addr = USRSTACK - PAGE_SIZE; 603 #endif 604 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 605 NULL, UVM_UNKNOWN_OFFSET, 0, 606 UVM_MAPFLAG(UVM_PROT_RW, UVM_PROT_ALL, UVM_INH_COPY, 607 UVM_ADV_NORMAL, UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW))) 608 panic("init: couldn't allocate argument space"); 609 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 610 611 for (pathp = &initpaths[0]; (path = *pathp) != NULL; pathp++) { 612 #ifdef MACHINE_STACK_GROWS_UP 613 ucp = (char *)addr; 614 #else 615 ucp = (char *)(addr + PAGE_SIZE); 616 #endif 617 /* 618 * Construct the boot flag argument. 619 */ 620 flagsp = flags; 621 *flagsp++ = '-'; 622 options = 0; 623 624 if (boothowto & RB_SINGLE) { 625 *flagsp++ = 's'; 626 options = 1; 627 } 628 #ifdef notyet 629 if (boothowto & RB_FASTBOOT) { 630 *flagsp++ = 'f'; 631 options = 1; 632 } 633 #endif 634 635 /* 636 * Move out the flags (arg 1), if necessary. 637 */ 638 if (options != 0) { 639 *flagsp++ = '\0'; 640 i = flagsp - flags; 641 #ifdef DEBUG 642 printf("init: copying out flags `%s' %d\n", flags, i); 643 #endif 644 #ifdef MACHINE_STACK_GROWS_UP 645 arg1 = ucp; 646 (void)copyout((caddr_t)flags, (caddr_t)ucp, i); 647 ucp += i; 648 #else 649 (void)copyout((caddr_t)flags, (caddr_t)(ucp -= i), i); 650 arg1 = ucp; 651 #endif 652 } 653 654 /* 655 * Move out the file name (also arg 0). 656 */ 657 i = strlen(path) + 1; 658 #ifdef DEBUG 659 printf("init: copying out path `%s' %d\n", path, i); 660 #endif 661 #ifdef MACHINE_STACK_GROWS_UP 662 arg0 = ucp; 663 (void)copyout((caddr_t)path, (caddr_t)ucp, i); 664 ucp += i; 665 ucp = (caddr_t)ALIGN((u_long)ucp); 666 uap = (char **)ucp + 3; 667 #else 668 (void)copyout((caddr_t)path, (caddr_t)(ucp -= i), i); 669 arg0 = ucp; 670 uap = (char **)((u_long)ucp & ~ALIGNBYTES); 671 #endif 672 673 /* 674 * Move out the arg pointers. 675 */ 676 i = 0; 677 copyout(&i, (caddr_t)--uap, sizeof(register_t)); /* terminator */ 678 if (options != 0) 679 copyout(&arg1, (caddr_t)--uap, sizeof(register_t)); 680 copyout(&arg0, (caddr_t)--uap, sizeof(register_t)); 681 682 /* 683 * Point at the arguments. 684 */ 685 SCARG(&args, path) = arg0; 686 SCARG(&args, argp) = uap; 687 SCARG(&args, envp) = NULL; 688 689 /* 690 * Now try to exec the program. If can't for any reason 691 * other than it doesn't exist, complain. 692 */ 693 if ((error = sys_execve(p, &args, retval)) == 0) { 694 KERNEL_PROC_UNLOCK(p); 695 return; 696 } 697 if (error != ENOENT) 698 printf("exec %s: error %d\n", path, error); 699 } 700 printf("init: not found\n"); 701 panic("no init"); 702 } 703 704 void 705 start_update(void *arg) 706 { 707 sched_sync(curproc); 708 /* NOTREACHED */ 709 } 710 711 void 712 start_cleaner(void *arg) 713 { 714 buf_daemon(curproc); 715 /* NOTREACHED */ 716 } 717 718 void 719 start_reaper(void *arg) 720 { 721 reaper(); 722 /* NOTREACHED */ 723 } 724 725 #ifdef CRYPTO 726 void 727 start_crypto(void *arg) 728 { 729 crypto_thread(); 730 /* NOTREACHED */ 731 } 732 #endif /* CRYPTO */ 733