1 /* $OpenBSD: init_main.c,v 1.265 2017/01/21 05:42:03 guenther 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/msgbuf.h> 75 #include <sys/mbuf.h> 76 #include <sys/pipe.h> 77 #include <sys/task.h> 78 79 #include <sys/syscall.h> 80 #include <sys/syscallargs.h> 81 82 #include <uvm/uvm_extern.h> 83 84 #include <dev/rndvar.h> 85 86 #include <ufs/ufs/quota.h> 87 88 #include <net/if.h> 89 #include <net/rtable.h> 90 #include <net/netisr.h> 91 92 #if defined(CRYPTO) 93 #include <crypto/cryptodev.h> 94 #include <crypto/cryptosoft.h> 95 #endif 96 97 #if defined(NFSSERVER) || defined(NFSCLIENT) 98 extern void nfs_init(void); 99 #endif 100 101 #include "mpath.h" 102 #include "vscsi.h" 103 #include "softraid.h" 104 105 const char copyright[] = 106 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n" 107 "\tThe Regents of the University of California. All rights reserved.\n" 108 "Copyright (c) 1995-2017 OpenBSD. All rights reserved. https://www.OpenBSD.org\n"; 109 110 /* Components of the first process -- never freed. */ 111 struct session session0; 112 struct pgrp pgrp0; 113 struct proc proc0; 114 struct process process0; 115 struct plimit limit0; 116 struct vmspace vmspace0; 117 struct sigacts sigacts0; 118 struct process *initprocess; 119 struct proc *reaperproc; 120 121 extern struct user *proc0paddr; 122 123 struct vnode *rootvp, *swapdev_vp; 124 int boothowto; 125 struct timespec boottime; 126 int ncpus = 1; 127 int ncpusfound = 1; /* number of cpus we find */ 128 volatile int start_init_exec; /* semaphore for start_init() */ 129 130 #if !defined(NO_PROPOLICE) 131 long __guard_local __attribute__((section(".openbsd.randomdata"))); 132 #endif 133 134 /* XXX return int so gcc -Werror won't complain */ 135 int main(void *); 136 void check_console(struct proc *); 137 void start_init(void *); 138 void start_cleaner(void *); 139 void start_update(void *); 140 void start_reaper(void *); 141 void crypto_init(void); 142 void db_ctf_init(void); 143 void prof_init(void); 144 void init_exec(void); 145 void kqueue_init(void); 146 void taskq_init(void); 147 void timeout_proc_init(void); 148 void pool_gc_pages(void *); 149 void percpu_init(void); 150 151 extern char sigcode[], esigcode[], sigcoderet[]; 152 #ifdef SYSCALL_DEBUG 153 extern char *syscallnames[]; 154 #endif 155 156 struct emul emul_native = { 157 "native", 158 NULL, 159 sendsig, 160 SYS_syscall, 161 SYS_MAXSYSCALL, 162 sysent, 163 #ifdef SYSCALL_DEBUG 164 syscallnames, 165 #else 166 NULL, 167 #endif 168 0, 169 copyargs, 170 setregs, 171 NULL, /* fixup */ 172 NULL, /* coredump */ 173 sigcode, 174 esigcode, 175 sigcoderet, 176 EMUL_ENABLED | EMUL_NATIVE, 177 }; 178 179 180 /* 181 * System startup; initialize the world, create process 0, mount root 182 * filesystem, and fork to create init and pagedaemon. Most of the 183 * hard work is done in the lower-level initialization routines including 184 * startup(), which does memory initialization and autoconfiguration. 185 */ 186 /* XXX return int, so gcc -Werror won't complain */ 187 int 188 main(void *framep) 189 { 190 struct proc *p; 191 struct process *pr; 192 struct pdevinit *pdev; 193 quad_t lim; 194 int s, i; 195 extern struct pdevinit pdevinit[]; 196 extern void disk_init(void); 197 198 /* 199 * Initialize the current process pointer (curproc) before 200 * any possible traps/probes to simplify trap processing. 201 */ 202 curproc = p = &proc0; 203 p->p_cpu = curcpu(); 204 205 /* 206 * Initialize timeouts. 207 */ 208 timeout_startup(); 209 210 /* 211 * Attempt to find console and initialize 212 * in case of early panic or other messages. 213 */ 214 config_init(); /* init autoconfiguration data structures */ 215 consinit(); 216 217 printf("%s\n", copyright); 218 219 KERNEL_LOCK_INIT(); 220 SCHED_LOCK_INIT(); 221 222 uvm_init(); 223 disk_init(); /* must come before autoconfiguration */ 224 tty_init(); /* initialise tty's */ 225 cpu_startup(); 226 227 random_start(); /* Start the flow */ 228 229 /* 230 * Initialize mbuf's. Do this now because we might attempt to 231 * allocate mbufs or mbuf clusters during autoconfiguration. 232 */ 233 mbinit(); 234 235 /* Initialize sockets. */ 236 soinit(); 237 238 /* Initialize SRP subsystem. */ 239 srp_startup(); 240 241 /* 242 * Initialize process and pgrp structures. 243 */ 244 procinit(); 245 246 /* Initialize file locking. */ 247 lf_init(); 248 249 /* 250 * Initialize filedescriptors. 251 */ 252 filedesc_init(); 253 254 /* 255 * Initialize pipes. 256 */ 257 pipe_init(); 258 259 /* 260 * Initialize kqueues. 261 */ 262 kqueue_init(); 263 264 /* Create credentials. */ 265 p->p_ucred = crget(); 266 p->p_ucred->cr_ngroups = 1; /* group 0 */ 267 268 /* 269 * Create process 0 (the swapper). 270 */ 271 pr = &process0; 272 process_initialize(pr, p); 273 274 LIST_INSERT_HEAD(&allprocess, pr, ps_list); 275 LIST_INSERT_HEAD(PIDHASH(0), pr, ps_hash); 276 atomic_setbits_int(&pr->ps_flags, PS_SYSTEM); 277 278 /* Set the default routing table/domain. */ 279 process0.ps_rtableid = 0; 280 281 LIST_INSERT_HEAD(&allproc, p, p_list); 282 pr->ps_pgrp = &pgrp0; 283 LIST_INSERT_HEAD(TIDHASH(0), p, p_hash); 284 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 285 LIST_INIT(&pgrp0.pg_members); 286 LIST_INSERT_HEAD(&pgrp0.pg_members, pr, ps_pglist); 287 288 pgrp0.pg_session = &session0; 289 session0.s_count = 1; 290 session0.s_leader = pr; 291 292 atomic_setbits_int(&p->p_flag, P_SYSTEM); 293 p->p_stat = SONPROC; 294 pr->ps_nice = NZERO; 295 pr->ps_emul = &emul_native; 296 strlcpy(pr->ps_comm, "swapper", sizeof(pr->ps_comm)); 297 298 /* Init timeouts. */ 299 timeout_set(&p->p_sleep_to, endtsleep, p); 300 301 /* Initialize signal state for process 0. */ 302 signal_init(); 303 pr->ps_sigacts = &sigacts0; 304 siginit(pr); 305 306 /* Create the file descriptor table. */ 307 p->p_fd = pr->ps_fd = fdinit(); 308 309 /* Create the limits structures. */ 310 pr->ps_limit = &limit0; 311 for (i = 0; i < nitems(p->p_rlimit); i++) 312 limit0.pl_rlimit[i].rlim_cur = 313 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; 314 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE; 315 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = MIN(NOFILE_MAX, 316 (maxfiles - NOFILE > NOFILE) ? maxfiles - NOFILE : NOFILE); 317 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC; 318 lim = ptoa(uvmexp.free); 319 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = lim; 320 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = lim; 321 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = lim / 3; 322 limit0.p_refcnt = 1; 323 324 /* Allocate a prototype map so we have something to fork. */ 325 uvmspace_init(&vmspace0, pmap_kernel(), round_page(VM_MIN_ADDRESS), 326 trunc_page(VM_MAX_ADDRESS), TRUE, TRUE); 327 p->p_vmspace = pr->ps_vmspace = &vmspace0; 328 329 p->p_addr = proc0paddr; /* XXX */ 330 331 /* 332 * Charge root for one process. 333 */ 334 (void)chgproccnt(0, 1); 335 336 /* Initialize run queues */ 337 sched_init_runqueues(); 338 sleep_queue_init(); 339 sched_init_cpu(curcpu()); 340 p->p_cpu->ci_randseed = (arc4random() & 0x7fffffff) + 1; 341 342 /* Initialize timeouts in process context. */ 343 timeout_proc_init(); 344 345 /* Initialize task queues */ 346 taskq_init(); 347 348 /* Initialize the interface/address trees */ 349 ifinit(); 350 351 /* Lock the kernel on behalf of proc0. */ 352 KERNEL_LOCK(); 353 354 #if NMPATH > 0 355 /* Attach mpath before hardware */ 356 config_rootfound("mpath", NULL); 357 #endif 358 359 /* Configure the devices */ 360 cpu_configure(); 361 362 /* Configure virtual memory system, set vm rlimits. */ 363 uvm_init_limits(p); 364 365 /* Per CPU memory allocation */ 366 percpu_init(); 367 368 /* Initialize the file systems. */ 369 #if defined(NFSSERVER) || defined(NFSCLIENT) 370 nfs_init(); /* initialize server/shared data */ 371 #endif 372 vfsinit(); 373 374 /* Start real time and statistics clocks. */ 375 initclocks(); 376 377 #ifdef SYSVSHM 378 /* Initialize System V style shared memory. */ 379 shminit(); 380 #endif 381 382 #ifdef SYSVSEM 383 /* Initialize System V style semaphores. */ 384 seminit(); 385 #endif 386 387 #ifdef SYSVMSG 388 /* Initialize System V style message queues. */ 389 msginit(); 390 #endif 391 392 /* Create default routing table before attaching lo0. */ 393 rtable_init(); 394 395 /* Attach pseudo-devices. */ 396 for (pdev = pdevinit; pdev->pdev_attach != NULL; pdev++) 397 if (pdev->pdev_count > 0) 398 (*pdev->pdev_attach)(pdev->pdev_count); 399 400 #ifdef CRYPTO 401 crypto_init(); 402 swcr_init(); 403 #endif /* CRYPTO */ 404 405 /* 406 * Initialize protocols. Block reception of incoming packets 407 * until everything is ready. 408 */ 409 s = splnet(); 410 domaininit(); 411 splx(s); 412 413 initconsbuf(); 414 415 #if defined(GPROF) || defined(DDBPROF) 416 /* Initialize kernel profiling. */ 417 prof_init(); 418 #endif 419 420 mbcpuinit(); /* enable per cpu mbuf data */ 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 { 438 struct proc *initproc; 439 440 if (fork1(p, FORK_FORK, NULL, 0, start_init, NULL, NULL, 441 &initproc)) 442 panic("fork init"); 443 initprocess = initproc->p_p; 444 } 445 446 randompid = 1; 447 448 /* 449 * Create any kernel threads whose creation was deferred because 450 * initprocess had not yet been created. 451 */ 452 kthread_run_deferred_queue(); 453 454 /* 455 * Now that device driver threads have been created, wait for 456 * them to finish any deferred autoconfiguration. Note we don't 457 * need to lock this semaphore, since we haven't booted any 458 * secondary processors, yet. 459 */ 460 while (config_pending) 461 (void) tsleep((void *)&config_pending, PWAIT, "cfpend", 0); 462 463 dostartuphooks(); 464 465 #if NVSCSI > 0 466 config_rootfound("vscsi", NULL); 467 #endif 468 #if NSOFTRAID > 0 469 config_rootfound("softraid", NULL); 470 #endif 471 472 /* Configure root/swap devices */ 473 diskconf(); 474 475 if (mountroot == NULL || ((*mountroot)() != 0)) 476 panic("cannot mount root"); 477 478 TAILQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 479 480 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 481 if (VFS_ROOT(TAILQ_FIRST(&mountlist), &rootvnode)) 482 panic("cannot find root vnode"); 483 p->p_fd->fd_cdir = rootvnode; 484 vref(p->p_fd->fd_cdir); 485 VOP_UNLOCK(rootvnode, p); 486 p->p_fd->fd_rdir = NULL; 487 488 /* 489 * Now that root is mounted, we can fixup initprocess's CWD 490 * info. All other processes are kthreads, which merely 491 * share proc0's CWD info. 492 */ 493 initprocess->ps_fd->fd_cdir = rootvnode; 494 vref(initprocess->ps_fd->fd_cdir); 495 initprocess->ps_fd->fd_rdir = NULL; 496 497 /* 498 * Now can look at time, having had a chance to verify the time 499 * from the file system. Reset p->p_rtime as it may have been 500 * munched in mi_switch() after the time got set. 501 */ 502 nanotime(&boottime); 503 LIST_FOREACH(pr, &allprocess, ps_list) { 504 pr->ps_start = boottime; 505 TAILQ_FOREACH(p, &pr->ps_threads, p_thr_link) { 506 nanouptime(&p->p_cpu->ci_schedstate.spc_runtime); 507 timespecclear(&p->p_rtime); 508 } 509 } 510 511 uvm_swap_init(); 512 513 /* Create the pageout daemon kernel thread. */ 514 if (kthread_create(uvm_pageout, NULL, NULL, "pagedaemon")) 515 panic("fork pagedaemon"); 516 517 /* Create the reaper daemon kernel thread. */ 518 if (kthread_create(start_reaper, NULL, &reaperproc, "reaper")) 519 panic("fork reaper"); 520 521 /* Create the cleaner daemon kernel thread. */ 522 if (kthread_create(start_cleaner, NULL, NULL, "cleaner")) 523 panic("fork cleaner"); 524 525 /* Create the update daemon kernel thread. */ 526 if (kthread_create(start_update, NULL, NULL, "update")) 527 panic("fork update"); 528 529 /* Create the aiodone daemon kernel thread. */ 530 if (kthread_create(uvm_aiodone_daemon, NULL, NULL, "aiodoned")) 531 panic("fork aiodoned"); 532 533 #if !defined(__hppa__) 534 /* Create the page zeroing kernel thread. */ 535 if (kthread_create(uvm_pagezero_thread, NULL, NULL, "zerothread")) 536 panic("fork zerothread"); 537 #endif 538 539 #if defined(MULTIPROCESSOR) 540 /* Boot the secondary processors. */ 541 cpu_boot_secondary_processors(); 542 #endif 543 544 config_process_deferred_mountroot(); 545 546 #ifdef DDBCTF 547 db_ctf_init(); 548 #endif 549 550 /* 551 * Okay, now we can let init(8) exec! It's off to userland! 552 */ 553 start_init_exec = 1; 554 wakeup((void *)&start_init_exec); 555 556 /* 557 * Start the idle pool page garbage collector 558 */ 559 #if !(defined(__m88k__) && defined(MULTIPROCESSOR)) /* XXX */ 560 pool_gc_pages(NULL); 561 #endif 562 563 start_periodic_resettodr(); 564 565 /* 566 * proc0: nothing to do, back to sleep 567 */ 568 while (1) 569 tsleep(&proc0, PVM, "scheduler", 0); 570 /* NOTREACHED */ 571 } 572 573 /* 574 * List of paths to try when searching for "init". 575 */ 576 static char *initpaths[] = { 577 "/sbin/init", 578 "/sbin/oinit", 579 "/sbin/init.bak", 580 NULL, 581 }; 582 583 void 584 check_console(struct proc *p) 585 { 586 struct nameidata nd; 587 int error; 588 589 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", p); 590 error = namei(&nd); 591 if (error) { 592 if (error == ENOENT) 593 printf("warning: /dev/console does not exist\n"); 594 else 595 printf("warning: /dev/console error %d\n", error); 596 } else 597 vrele(nd.ni_vp); 598 } 599 600 /* 601 * Start the initial user process; try exec'ing each pathname in "initpaths". 602 * The program is invoked with one argument containing the boot flags. 603 */ 604 void 605 start_init(void *arg) 606 { 607 struct proc *p = arg; 608 vaddr_t addr; 609 struct sys_execve_args /* { 610 syscallarg(const char *) path; 611 syscallarg(char *const *) argp; 612 syscallarg(char *const *) envp; 613 } */ args; 614 int options, error; 615 long i; 616 register_t retval[2]; 617 char flags[4], *flagsp; 618 char **pathp, *path, *ucp, **uap, *arg0, *arg1 = NULL; 619 620 /* 621 * Now in process 1. 622 */ 623 624 /* 625 * Wait for main() to tell us that it's safe to exec. 626 */ 627 while (start_init_exec == 0) 628 (void) tsleep((void *)&start_init_exec, PWAIT, "initexec", 0); 629 630 check_console(p); 631 632 /* process 0 ignores SIGCHLD, but we can't */ 633 p->p_p->ps_sigacts->ps_flags = 0; 634 635 /* 636 * Need just enough stack to hold the faked-up "execve()" arguments. 637 */ 638 #ifdef MACHINE_STACK_GROWS_UP 639 addr = USRSTACK; 640 #else 641 addr = USRSTACK - PAGE_SIZE; 642 #endif 643 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 644 p->p_vmspace->vm_minsaddr = (caddr_t)(addr + PAGE_SIZE); 645 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 646 NULL, UVM_UNKNOWN_OFFSET, 0, 647 UVM_MAPFLAG(PROT_READ | PROT_WRITE, PROT_MASK, MAP_INHERIT_COPY, 648 MADV_NORMAL, UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW))) 649 panic("init: couldn't allocate argument space"); 650 651 for (pathp = &initpaths[0]; (path = *pathp) != NULL; pathp++) { 652 #ifdef MACHINE_STACK_GROWS_UP 653 ucp = (char *)addr; 654 #else 655 ucp = (char *)(addr + PAGE_SIZE); 656 #endif 657 /* 658 * Construct the boot flag argument. 659 */ 660 flagsp = flags; 661 *flagsp++ = '-'; 662 options = 0; 663 664 if (boothowto & RB_SINGLE) { 665 *flagsp++ = 's'; 666 options = 1; 667 } 668 #ifdef notyet 669 if (boothowto & RB_FASTBOOT) { 670 *flagsp++ = 'f'; 671 options = 1; 672 } 673 #endif 674 675 /* 676 * Move out the flags (arg 1), if necessary. 677 */ 678 if (options != 0) { 679 *flagsp++ = '\0'; 680 i = flagsp - flags; 681 #ifdef DEBUG 682 printf("init: copying out flags `%s' %ld\n", flags, i); 683 #endif 684 #ifdef MACHINE_STACK_GROWS_UP 685 arg1 = ucp; 686 (void)copyout((caddr_t)flags, (caddr_t)ucp, i); 687 ucp += i; 688 #else 689 (void)copyout((caddr_t)flags, (caddr_t)(ucp -= i), i); 690 arg1 = ucp; 691 #endif 692 } 693 694 /* 695 * Move out the file name (also arg 0). 696 */ 697 i = strlen(path) + 1; 698 #ifdef DEBUG 699 printf("init: copying out path `%s' %ld\n", path, i); 700 #endif 701 #ifdef MACHINE_STACK_GROWS_UP 702 arg0 = ucp; 703 (void)copyout((caddr_t)path, (caddr_t)ucp, i); 704 ucp += i; 705 ucp = (caddr_t)ALIGN((u_long)ucp); 706 uap = (char **)ucp + 3; 707 #else 708 (void)copyout((caddr_t)path, (caddr_t)(ucp -= i), i); 709 arg0 = ucp; 710 uap = (char **)((u_long)ucp & ~ALIGNBYTES); 711 #endif 712 713 /* 714 * Move out the arg pointers. 715 */ 716 i = 0; 717 copyout(&i, (caddr_t)--uap, sizeof(register_t)); /* terminator */ 718 if (options != 0) 719 copyout(&arg1, (caddr_t)--uap, sizeof(register_t)); 720 copyout(&arg0, (caddr_t)--uap, sizeof(register_t)); 721 722 /* 723 * Point at the arguments. 724 */ 725 SCARG(&args, path) = arg0; 726 SCARG(&args, argp) = uap; 727 SCARG(&args, envp) = NULL; 728 729 /* 730 * Now try to exec the program. If can't for any reason 731 * other than it doesn't exist, complain. 732 */ 733 if ((error = sys_execve(p, &args, retval)) == 0) { 734 KERNEL_UNLOCK(); 735 return; 736 } 737 if (error != ENOENT) 738 printf("exec %s: error %d\n", path, error); 739 } 740 printf("init: not found\n"); 741 panic("no init"); 742 } 743 744 void 745 start_update(void *arg) 746 { 747 sched_sync(curproc); 748 /* NOTREACHED */ 749 } 750 751 void 752 start_cleaner(void *arg) 753 { 754 buf_daemon(curproc); 755 /* NOTREACHED */ 756 } 757 758 void 759 start_reaper(void *arg) 760 { 761 reaper(); 762 /* NOTREACHED */ 763 } 764