1 /* $OpenBSD: init_main.c,v 1.184 2012/08/28 16:39:09 matthew 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/core.h> 43 #include <sys/filedesc.h> 44 #include <sys/file.h> 45 #include <sys/errno.h> 46 #include <sys/exec.h> 47 #include <sys/kernel.h> 48 #include <sys/kthread.h> 49 #include <sys/mount.h> 50 #include <sys/proc.h> 51 #include <sys/resourcevar.h> 52 #include <sys/signalvar.h> 53 #include <sys/systm.h> 54 #include <sys/namei.h> 55 #include <sys/vnode.h> 56 #include <sys/tty.h> 57 #include <sys/conf.h> 58 #include <sys/buf.h> 59 #include <sys/device.h> 60 #include <sys/socketvar.h> 61 #include <sys/lockf.h> 62 #include <sys/protosw.h> 63 #include <sys/reboot.h> 64 #include <sys/user.h> 65 #ifdef SYSVSHM 66 #include <sys/shm.h> 67 #endif 68 #ifdef SYSVSEM 69 #include <sys/sem.h> 70 #endif 71 #ifdef SYSVMSG 72 #include <sys/msg.h> 73 #endif 74 #include <sys/domain.h> 75 #include <sys/mbuf.h> 76 #include <sys/pipe.h> 77 #include <sys/workq.h> 78 79 #include <sys/syscall.h> 80 #include <sys/syscallargs.h> 81 82 #include <dev/rndvar.h> 83 84 #include <ufs/ufs/quota.h> 85 86 #include <machine/cpu.h> 87 88 #include <uvm/uvm.h> 89 90 #include <net/if.h> 91 #include <net/raw_cb.h> 92 #include <net/netisr.h> 93 94 #if defined(CRYPTO) 95 #include <crypto/cryptodev.h> 96 #include <crypto/cryptosoft.h> 97 #endif 98 99 #if defined(NFSSERVER) || defined(NFSCLIENT) 100 extern void nfs_init(void); 101 #endif 102 103 #include "mpath.h" 104 #include "vscsi.h" 105 #include "softraid.h" 106 107 const char copyright[] = 108 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n" 109 "\tThe Regents of the University of California. All rights reserved.\n" 110 "Copyright (c) 1995-2012 OpenBSD. All rights reserved. http://www.OpenBSD.org\n"; 111 112 /* Components of the first process -- never freed. */ 113 struct session session0; 114 struct pgrp pgrp0; 115 struct proc proc0; 116 struct process process0; 117 struct pcred cred0; 118 struct plimit limit0; 119 struct vmspace vmspace0; 120 struct sigacts sigacts0; 121 struct proc *initproc; 122 struct proc *reaperproc; 123 124 int cmask = CMASK; 125 extern struct user *proc0paddr; 126 127 struct vnode *rootvp, *swapdev_vp; 128 int boothowto; 129 struct timeval boottime; 130 int ncpus = 1; 131 int ncpusfound = 1; /* number of cpus we find */ 132 __volatile int start_init_exec; /* semaphore for start_init() */ 133 134 #if !defined(NO_PROPOLICE) 135 #ifdef __ELF__ 136 long __guard_local __dso_hidden; 137 #endif 138 long __guard[8]; 139 #endif 140 141 /* XXX return int so gcc -Werror won't complain */ 142 int main(void *); 143 void check_console(struct proc *); 144 void start_init(void *); 145 void start_cleaner(void *); 146 void start_update(void *); 147 void start_reaper(void *); 148 void crypto_init(void); 149 void init_exec(void); 150 void kqueue_init(void); 151 void workq_init(void); 152 153 extern char sigcode[], esigcode[]; 154 #ifdef SYSCALL_DEBUG 155 extern char *syscallnames[]; 156 #endif 157 158 struct emul emul_native = { 159 "native", 160 NULL, 161 sendsig, 162 SYS_syscall, 163 SYS_MAXSYSCALL, 164 sysent, 165 #ifdef SYSCALL_DEBUG 166 syscallnames, 167 #else 168 NULL, 169 #endif 170 0, 171 copyargs, 172 setregs, 173 NULL, 174 coredump_trad, 175 sigcode, 176 esigcode, 177 EMUL_ENABLED | EMUL_NATIVE, 178 }; 179 180 181 /* 182 * System startup; initialize the world, create process 0, mount root 183 * filesystem, and fork to create init and pagedaemon. Most of the 184 * hard work is done in the lower-level initialization routines including 185 * startup(), which does memory initialization and autoconfiguration. 186 */ 187 /* XXX return int, so gcc -Werror won't complain */ 188 int 189 main(void *framep) 190 { 191 struct proc *p; 192 struct process *pr; 193 struct pdevinit *pdev; 194 struct timeval rtv; 195 quad_t lim; 196 int s, i; 197 extern struct pdevinit pdevinit[]; 198 extern void disk_init(void); 199 200 /* 201 * Initialize the current process pointer (curproc) before 202 * any possible traps/probes to simplify trap processing. 203 */ 204 curproc = p = &proc0; 205 p->p_cpu = curcpu(); 206 207 /* 208 * Initialize timeouts. 209 */ 210 timeout_startup(); 211 212 /* 213 * Attempt to find console and initialize 214 * in case of early panic or other messages. 215 */ 216 config_init(); /* init autoconfiguration data structures */ 217 consinit(); 218 219 printf("%s\n", copyright); 220 221 KERNEL_LOCK_INIT(); 222 SCHED_LOCK_INIT(); 223 224 random_init(); 225 226 uvm_init(); 227 disk_init(); /* must come before autoconfiguration */ 228 tty_init(); /* initialise tty's */ 229 cpu_startup(); 230 231 /* 232 * Initialize mbuf's. Do this now because we might attempt to 233 * allocate mbufs or mbuf clusters during autoconfiguration. 234 */ 235 mbinit(); 236 237 /* Initialize sockets. */ 238 soinit(); 239 240 /* 241 * Initialize process and pgrp structures. 242 */ 243 procinit(); 244 245 /* Initialize file locking. */ 246 lf_init(); 247 248 /* 249 * Initialize filedescriptors. 250 */ 251 filedesc_init(); 252 253 /* 254 * Initialize pipes. 255 */ 256 pipe_init(); 257 258 /* 259 * Initialize kqueues. 260 */ 261 kqueue_init(); 262 263 /* 264 * Create process 0 (the swapper). 265 */ 266 267 process0.ps_mainproc = p; 268 TAILQ_INIT(&process0.ps_threads); 269 TAILQ_INSERT_TAIL(&process0.ps_threads, p, p_thr_link); 270 process0.ps_refcnt = 1; 271 p->p_p = pr = &process0; 272 273 /* Set the default routing table/domain. */ 274 process0.ps_rtableid = 0; 275 276 LIST_INSERT_HEAD(&allproc, p, p_list); 277 pr->ps_pgrp = &pgrp0; 278 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash); 279 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 280 LIST_INIT(&pgrp0.pg_members); 281 LIST_INSERT_HEAD(&pgrp0.pg_members, pr, ps_pglist); 282 283 pgrp0.pg_session = &session0; 284 session0.s_count = 1; 285 session0.s_leader = pr; 286 287 atomic_setbits_int(&p->p_flag, P_SYSTEM); 288 p->p_stat = SONPROC; 289 pr->ps_nice = NZERO; 290 p->p_emul = &emul_native; 291 bcopy("swapper", p->p_comm, sizeof ("swapper")); 292 293 /* Init timeouts. */ 294 timeout_set(&p->p_sleep_to, endtsleep, p); 295 timeout_set(&pr->ps_realit_to, realitexpire, pr); 296 297 /* Create credentials. */ 298 p->p_cred = &cred0; 299 p->p_ucred = crget(); 300 p->p_ucred->cr_ngroups = 1; /* group 0 */ 301 302 /* Initialize signal state for process 0. */ 303 signal_init(); 304 p->p_sigacts = &sigacts0; 305 siginit(p); 306 307 /* Create the file descriptor table. */ 308 p->p_fd = fdinit(NULL); 309 310 /* Create the limits structures. */ 311 pr->ps_limit = &limit0; 312 for (i = 0; i < nitems(p->p_rlimit); i++) 313 limit0.pl_rlimit[i].rlim_cur = 314 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; 315 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE; 316 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = MIN(NOFILE_MAX, 317 (maxfiles - NOFILE > NOFILE) ? maxfiles - NOFILE : NOFILE); 318 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC; 319 lim = ptoa(uvmexp.free); 320 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = lim; 321 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = lim; 322 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = lim / 3; 323 limit0.p_refcnt = 1; 324 325 /* Allocate a prototype map so we have something to fork. */ 326 uvmspace_init(&vmspace0, pmap_kernel(), round_page(VM_MIN_ADDRESS), 327 trunc_page(VM_MAX_ADDRESS), TRUE, TRUE); 328 p->p_vmspace = &vmspace0; 329 330 p->p_addr = proc0paddr; /* XXX */ 331 332 /* 333 * Charge root for one process. 334 */ 335 (void)chgproccnt(0, 1); 336 337 /* Initialize run queues */ 338 sched_init_runqueues(); 339 sleep_queue_init(); 340 sched_init_cpu(curcpu()); 341 342 /* Initialize work queues */ 343 workq_init(); 344 345 random_start(); 346 347 /* Initialize the interface/address trees */ 348 ifinit(); 349 350 /* Configure the devices */ 351 cpu_configure(); 352 353 /* Configure virtual memory system, set vm rlimits. */ 354 uvm_init_limits(p); 355 356 /* Initialize the file systems. */ 357 #if defined(NFSSERVER) || defined(NFSCLIENT) 358 nfs_init(); /* initialize server/shared data */ 359 #endif 360 vfsinit(); 361 362 /* Start real time and statistics clocks. */ 363 initclocks(); 364 365 /* Lock the kernel on behalf of proc0. */ 366 KERNEL_LOCK(); 367 368 #ifdef SYSVSHM 369 /* Initialize System V style shared memory. */ 370 shminit(); 371 #endif 372 373 #ifdef SYSVSEM 374 /* Initialize System V style semaphores. */ 375 seminit(); 376 #endif 377 378 #ifdef SYSVMSG 379 /* Initialize System V style message queues. */ 380 msginit(); 381 #endif 382 383 /* Attach pseudo-devices. */ 384 for (pdev = pdevinit; pdev->pdev_attach != NULL; pdev++) 385 if (pdev->pdev_count > 0) 386 (*pdev->pdev_attach)(pdev->pdev_count); 387 388 #ifdef CRYPTO 389 crypto_init(); 390 swcr_init(); 391 #endif /* CRYPTO */ 392 393 /* 394 * Initialize protocols. Block reception of incoming packets 395 * until everything is ready. 396 */ 397 s = splnet(); 398 netisr_init(); 399 domaininit(); 400 if_attachdomain(); 401 splx(s); 402 403 #ifdef GPROF 404 /* Initialize kernel profiling. */ 405 kmstartup(); 406 #endif 407 408 #if !defined(NO_PROPOLICE) 409 { 410 volatile long newguard[8]; 411 412 arc4random_buf((long *)newguard, sizeof(newguard)); 413 414 #ifdef __ELF__ 415 __guard_local = newguard[0]; 416 #endif 417 for (i = nitems(__guard) - 1; i; i--) 418 __guard[i] = newguard[i]; 419 } 420 #endif 421 422 /* init exec and emul */ 423 init_exec(); 424 425 /* Start the scheduler */ 426 scheduler_start(); 427 428 /* 429 * Create process 1 (init(8)). We do this now, as Unix has 430 * historically had init be process 1, and changing this would 431 * probably upset a lot of people. 432 * 433 * Note that process 1 won't immediately exec init(8), but will 434 * wait for us to inform it that the root file system has been 435 * mounted. 436 */ 437 if (fork1(p, SIGCHLD, FORK_FORK, NULL, 0, start_init, NULL, NULL, 438 &initproc)) 439 panic("fork init"); 440 441 /* 442 * Create any kernel threads whose creation was deferred because 443 * initproc had not yet been created. 444 */ 445 kthread_run_deferred_queue(); 446 447 /* 448 * Now that device driver threads have been created, wait for 449 * them to finish any deferred autoconfiguration. Note we don't 450 * need to lock this semaphore, since we haven't booted any 451 * secondary processors, yet. 452 */ 453 while (config_pending) 454 (void) tsleep((void *)&config_pending, PWAIT, "cfpend", 0); 455 456 dostartuphooks(); 457 458 #if NMPATH > 0 459 config_rootfound("mpath", NULL); 460 #endif 461 #if NVSCSI > 0 462 config_rootfound("vscsi", NULL); 463 #endif 464 #if NSOFTRAID > 0 465 config_rootfound("softraid", NULL); 466 #endif 467 468 /* Configure root/swap devices */ 469 diskconf(); 470 471 if (mountroot == NULL || ((*mountroot)() != 0)) 472 panic("cannot mount root"); 473 474 CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 475 476 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 477 if (VFS_ROOT(CIRCLEQ_FIRST(&mountlist), &rootvnode)) 478 panic("cannot find root vnode"); 479 p->p_fd->fd_cdir = rootvnode; 480 vref(p->p_fd->fd_cdir); 481 VOP_UNLOCK(rootvnode, 0, p); 482 p->p_fd->fd_rdir = NULL; 483 484 /* 485 * Now that root is mounted, we can fixup initproc's CWD 486 * info. All other processes are kthreads, which merely 487 * share proc0's CWD info. 488 */ 489 initproc->p_fd->fd_cdir = rootvnode; 490 vref(initproc->p_fd->fd_cdir); 491 initproc->p_fd->fd_rdir = NULL; 492 493 /* 494 * Now can look at time, having had a chance to verify the time 495 * from the file system. Reset p->p_rtime as it may have been 496 * munched in mi_switch() after the time got set. 497 */ 498 #ifdef __HAVE_TIMECOUNTER 499 microtime(&boottime); 500 #else 501 boottime = mono_time = time; 502 #endif 503 LIST_FOREACH(p, &allproc, p_list) { 504 p->p_p->ps_start = boottime; 505 microuptime(&p->p_cpu->ci_schedstate.spc_runtime); 506 p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; 507 } 508 509 uvm_swap_init(); 510 511 /* Create the pageout daemon kernel thread. */ 512 if (kthread_create(uvm_pageout, NULL, NULL, "pagedaemon")) 513 panic("fork pagedaemon"); 514 515 /* Create the reaper daemon kernel thread. */ 516 if (kthread_create(start_reaper, NULL, &reaperproc, "reaper")) 517 panic("fork reaper"); 518 519 /* Create the cleaner daemon kernel thread. */ 520 if (kthread_create(start_cleaner, NULL, NULL, "cleaner")) 521 panic("fork cleaner"); 522 523 /* Create the update daemon kernel thread. */ 524 if (kthread_create(start_update, NULL, NULL, "update")) 525 panic("fork update"); 526 527 /* Create the aiodone daemon kernel thread. */ 528 if (kthread_create(uvm_aiodone_daemon, NULL, NULL, "aiodoned")) 529 panic("fork aiodoned"); 530 531 microtime(&rtv); 532 srandom((u_int32_t)(rtv.tv_sec ^ rtv.tv_usec) ^ arc4random()); 533 534 randompid = 1; 535 536 #if defined(MULTIPROCESSOR) 537 /* Boot the secondary processors. */ 538 cpu_boot_secondary_processors(); 539 #endif 540 541 domountroothooks(); 542 543 /* 544 * Okay, now we can let init(8) exec! It's off to userland! 545 */ 546 start_init_exec = 1; 547 wakeup((void *)&start_init_exec); 548 549 /* 550 * proc0: nothing to do, back to sleep 551 */ 552 while (1) 553 tsleep(&proc0, PVM, "scheduler", 0); 554 /* NOTREACHED */ 555 } 556 557 /* 558 * List of paths to try when searching for "init". 559 */ 560 static char *initpaths[] = { 561 "/sbin/init", 562 "/sbin/oinit", 563 "/sbin/init.bak", 564 NULL, 565 }; 566 567 void 568 check_console(struct proc *p) 569 { 570 struct nameidata nd; 571 int error; 572 573 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", p); 574 error = namei(&nd); 575 if (error) { 576 if (error == ENOENT) 577 printf("warning: /dev/console does not exist\n"); 578 else 579 printf("warning: /dev/console error %d\n", error); 580 } else 581 vrele(nd.ni_vp); 582 } 583 584 /* 585 * Start the initial user process; try exec'ing each pathname in "initpaths". 586 * The program is invoked with one argument containing the boot flags. 587 */ 588 void 589 start_init(void *arg) 590 { 591 struct proc *p = arg; 592 vaddr_t addr; 593 struct sys_execve_args /* { 594 syscallarg(const char *) path; 595 syscallarg(char *const *) argp; 596 syscallarg(char *const *) envp; 597 } */ args; 598 int options, error; 599 long i; 600 register_t retval[2]; 601 char flags[4], *flagsp; 602 char **pathp, *path, *ucp, **uap, *arg0, *arg1 = NULL; 603 604 /* 605 * Now in process 1. 606 */ 607 608 /* 609 * Wait for main() to tell us that it's safe to exec. 610 */ 611 while (start_init_exec == 0) 612 (void) tsleep((void *)&start_init_exec, PWAIT, "initexec", 0); 613 614 check_console(p); 615 616 /* process 0 ignores SIGCHLD, but we can't */ 617 p->p_sigacts->ps_flags = 0; 618 619 /* 620 * Need just enough stack to hold the faked-up "execve()" arguments. 621 */ 622 #ifdef MACHINE_STACK_GROWS_UP 623 addr = USRSTACK; 624 #else 625 addr = USRSTACK - PAGE_SIZE; 626 #endif 627 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 628 NULL, UVM_UNKNOWN_OFFSET, 0, 629 UVM_MAPFLAG(UVM_PROT_RW, UVM_PROT_ALL, UVM_INH_COPY, 630 UVM_ADV_NORMAL, UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW))) 631 panic("init: couldn't allocate argument space"); 632 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 633 634 for (pathp = &initpaths[0]; (path = *pathp) != NULL; pathp++) { 635 #ifdef MACHINE_STACK_GROWS_UP 636 ucp = (char *)addr; 637 #else 638 ucp = (char *)(addr + PAGE_SIZE); 639 #endif 640 /* 641 * Construct the boot flag argument. 642 */ 643 flagsp = flags; 644 *flagsp++ = '-'; 645 options = 0; 646 647 if (boothowto & RB_SINGLE) { 648 *flagsp++ = 's'; 649 options = 1; 650 } 651 #ifdef notyet 652 if (boothowto & RB_FASTBOOT) { 653 *flagsp++ = 'f'; 654 options = 1; 655 } 656 #endif 657 658 /* 659 * Move out the flags (arg 1), if necessary. 660 */ 661 if (options != 0) { 662 *flagsp++ = '\0'; 663 i = flagsp - flags; 664 #ifdef DEBUG 665 printf("init: copying out flags `%s' %d\n", flags, i); 666 #endif 667 #ifdef MACHINE_STACK_GROWS_UP 668 arg1 = ucp; 669 (void)copyout((caddr_t)flags, (caddr_t)ucp, i); 670 ucp += i; 671 #else 672 (void)copyout((caddr_t)flags, (caddr_t)(ucp -= i), i); 673 arg1 = ucp; 674 #endif 675 } 676 677 /* 678 * Move out the file name (also arg 0). 679 */ 680 i = strlen(path) + 1; 681 #ifdef DEBUG 682 printf("init: copying out path `%s' %d\n", path, i); 683 #endif 684 #ifdef MACHINE_STACK_GROWS_UP 685 arg0 = ucp; 686 (void)copyout((caddr_t)path, (caddr_t)ucp, i); 687 ucp += i; 688 ucp = (caddr_t)ALIGN((u_long)ucp); 689 uap = (char **)ucp + 3; 690 #else 691 (void)copyout((caddr_t)path, (caddr_t)(ucp -= i), i); 692 arg0 = ucp; 693 uap = (char **)((u_long)ucp & ~ALIGNBYTES); 694 #endif 695 696 /* 697 * Move out the arg pointers. 698 */ 699 i = 0; 700 copyout(&i, (caddr_t)--uap, sizeof(register_t)); /* terminator */ 701 if (options != 0) 702 copyout(&arg1, (caddr_t)--uap, sizeof(register_t)); 703 copyout(&arg0, (caddr_t)--uap, sizeof(register_t)); 704 705 /* 706 * Point at the arguments. 707 */ 708 SCARG(&args, path) = arg0; 709 SCARG(&args, argp) = uap; 710 SCARG(&args, envp) = NULL; 711 712 /* 713 * Now try to exec the program. If can't for any reason 714 * other than it doesn't exist, complain. 715 */ 716 if ((error = sys_execve(p, &args, retval)) == 0) { 717 KERNEL_UNLOCK(); 718 return; 719 } 720 if (error != ENOENT) 721 printf("exec %s: error %d\n", path, error); 722 } 723 printf("init: not found\n"); 724 panic("no init"); 725 } 726 727 void 728 start_update(void *arg) 729 { 730 sched_sync(curproc); 731 /* NOTREACHED */ 732 } 733 734 void 735 start_cleaner(void *arg) 736 { 737 buf_daemon(curproc); 738 /* NOTREACHED */ 739 } 740 741 void 742 start_reaper(void *arg) 743 { 744 reaper(); 745 /* NOTREACHED */ 746 } 747