1 /* $OpenBSD: init_main.c,v 1.288 2019/06/02 03:58:28 visa 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 #include <sys/witness.h> 79 #include <sys/smr.h> 80 81 #include <sys/syscall.h> 82 #include <sys/syscallargs.h> 83 84 #include <uvm/uvm_extern.h> 85 86 #include <dev/rndvar.h> 87 88 #include <ufs/ufs/quota.h> 89 90 #include <net/if.h> 91 #include <net/rtable.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) 1995-2019 OpenBSD. All rights reserved. https://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 plimit limit0; 118 struct vmspace vmspace0; 119 struct sigacts sigacts0; 120 struct process *initprocess; 121 struct proc *reaperproc; 122 123 extern struct user *proc0paddr; 124 125 struct vnode *rootvp, *swapdev_vp; 126 int boothowto; 127 int db_active = 0; 128 int ncpus = 1; 129 int ncpusfound = 1; /* number of cpus we find */ 130 volatile int start_init_exec; /* semaphore for start_init() */ 131 132 #if !defined(NO_PROPOLICE) 133 long __guard_local __attribute__((section(".openbsd.randomdata"))); 134 #endif 135 136 /* XXX return int so gcc -Werror won't complain */ 137 int main(void *); 138 void check_console(struct proc *); 139 void start_init(void *); 140 void crypto_init(void); 141 void db_ctf_init(void); 142 void prof_init(void); 143 void init_exec(void); 144 void kqueue_init(void); 145 void futex_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 SYS_syscall, 160 SYS_MAXSYSCALL, 161 sysent, 162 #ifdef SYSCALL_DEBUG 163 syscallnames, 164 #else 165 NULL, 166 #endif 167 0, 168 copyargs, 169 setregs, 170 NULL, /* fixup */ 171 NULL, /* coredump */ 172 sigcode, 173 esigcode, 174 sigcoderet 175 }; 176 177 #ifdef DIAGNOSTIC 178 int pdevinit_done = 0; 179 #endif 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 extern struct pdevinit pdevinit[]; 195 extern void disk_init(void); 196 197 /* 198 * Initialize the current process pointer (curproc) before 199 * any possible traps/probes to simplify trap processing. 200 */ 201 curproc = p = &proc0; 202 p->p_cpu = curcpu(); 203 204 /* 205 * Initialize timeouts. 206 */ 207 timeout_startup(); 208 209 /* 210 * Attempt to find console and initialize 211 * in case of early panic or other messages. 212 */ 213 config_init(); /* init autoconfiguration data structures */ 214 consinit(); 215 216 printf("%s\n", copyright); 217 218 WITNESS_INITIALIZE(); 219 220 KERNEL_LOCK_INIT(); 221 SCHED_LOCK_INIT(); 222 223 uvm_init(); 224 disk_init(); /* must come before autoconfiguration */ 225 tty_init(); /* initialise tty's */ 226 cpu_startup(); 227 228 random_start(); /* Start the flow */ 229 230 /* 231 * Initialize mbuf's. Do this now because we might attempt to 232 * allocate mbufs or mbuf clusters during autoconfiguration. 233 */ 234 mbinit(); 235 236 /* Initialize sockets. */ 237 soinit(); 238 239 /* Initialize SRP subsystem. */ 240 srp_startup(); 241 242 /* Initialize SMR subsystem. */ 243 smr_startup(); 244 245 /* 246 * Initialize process and pgrp structures. 247 */ 248 procinit(); 249 250 /* Initialize file locking. */ 251 lf_init(); 252 253 /* 254 * Initialize filedescriptors. 255 */ 256 filedesc_init(); 257 258 /* 259 * Initialize pipes. 260 */ 261 pipe_init(); 262 263 /* 264 * Initialize kqueues. 265 */ 266 kqueue_init(); 267 268 /* 269 * Initialize futexes. 270 */ 271 futex_init(); 272 273 /* Create credentials. */ 274 p->p_ucred = crget(); 275 p->p_ucred->cr_ngroups = 1; /* group 0 */ 276 277 /* 278 * Create process 0 (the swapper). 279 */ 280 pr = &process0; 281 process_initialize(pr, p); 282 283 LIST_INSERT_HEAD(&allprocess, pr, ps_list); 284 LIST_INSERT_HEAD(PIDHASH(0), pr, ps_hash); 285 atomic_setbits_int(&pr->ps_flags, PS_SYSTEM); 286 287 /* Set the default routing table/domain. */ 288 process0.ps_rtableid = 0; 289 290 LIST_INSERT_HEAD(&allproc, p, p_list); 291 pr->ps_pgrp = &pgrp0; 292 LIST_INSERT_HEAD(TIDHASH(0), p, p_hash); 293 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 294 LIST_INIT(&pgrp0.pg_members); 295 LIST_INSERT_HEAD(&pgrp0.pg_members, pr, ps_pglist); 296 297 pgrp0.pg_session = &session0; 298 session0.s_count = 1; 299 session0.s_leader = pr; 300 301 atomic_setbits_int(&p->p_flag, P_SYSTEM); 302 p->p_stat = SONPROC; 303 pr->ps_nice = NZERO; 304 pr->ps_emul = &emul_native; 305 strlcpy(pr->ps_comm, "swapper", sizeof(pr->ps_comm)); 306 307 /* Init timeouts. */ 308 timeout_set(&p->p_sleep_to, endtsleep, p); 309 310 /* Initialize signal state for process 0. */ 311 signal_init(); 312 pr->ps_sigacts = &sigacts0; 313 siginit(pr); 314 315 /* Create the file descriptor table. */ 316 p->p_fd = pr->ps_fd = fdinit(); 317 318 /* Create the limits structures. */ 319 lim_startup(&limit0); 320 pr->ps_limit = &limit0; 321 322 /* Allocate a prototype map so we have something to fork. */ 323 uvmspace_init(&vmspace0, pmap_kernel(), round_page(VM_MIN_ADDRESS), 324 trunc_page(VM_MAX_ADDRESS), TRUE, TRUE); 325 p->p_vmspace = pr->ps_vmspace = &vmspace0; 326 327 p->p_addr = proc0paddr; /* XXX */ 328 329 /* 330 * Charge root for one process. 331 */ 332 (void)chgproccnt(0, 1); 333 334 /* Initialize run queues */ 335 sched_init_runqueues(); 336 sleep_queue_init(); 337 sched_init_cpu(curcpu()); 338 p->p_cpu->ci_randseed = (arc4random() & 0x7fffffff) + 1; 339 340 /* Initialize timeouts in process context. */ 341 timeout_proc_init(); 342 343 /* Initialize task queues */ 344 taskq_init(); 345 346 /* Initialize the interface/address trees */ 347 ifinit(); 348 349 /* Lock the kernel on behalf of proc0. */ 350 KERNEL_LOCK(); 351 352 #if NMPATH > 0 353 /* Attach mpath before hardware */ 354 config_rootfound("mpath", NULL); 355 #endif 356 357 /* Configure the devices */ 358 cpu_configure(); 359 360 /* Configure virtual memory system, set vm rlimits. */ 361 uvm_init_limits(p); 362 363 /* Per CPU memory allocation */ 364 percpu_init(); 365 366 /* Initialize the file systems. */ 367 #if defined(NFSSERVER) || defined(NFSCLIENT) 368 nfs_init(); /* initialize server/shared data */ 369 #endif 370 vfsinit(); 371 372 /* Start real time and statistics clocks. */ 373 initclocks(); 374 375 #ifdef SYSVSHM 376 /* Initialize System V style shared memory. */ 377 shminit(); 378 #endif 379 380 #ifdef SYSVSEM 381 /* Initialize System V style semaphores. */ 382 seminit(); 383 #endif 384 385 #ifdef SYSVMSG 386 /* Initialize System V style message queues. */ 387 msginit(); 388 #endif 389 390 /* Create default routing table before attaching lo0. */ 391 rtable_init(); 392 393 /* Attach pseudo-devices. */ 394 for (pdev = pdevinit; pdev->pdev_attach != NULL; pdev++) 395 if (pdev->pdev_count > 0) 396 (*pdev->pdev_attach)(pdev->pdev_count); 397 #ifdef DIAGNOSTIC 398 pdevinit_done = 1; 399 #endif 400 401 #ifdef CRYPTO 402 crypto_init(); 403 swcr_init(); 404 #endif /* CRYPTO */ 405 406 /* 407 * Initialize protocols. 408 */ 409 domaininit(); 410 411 initconsbuf(); 412 413 #if defined(GPROF) || defined(DDBPROF) 414 /* Initialize kernel profiling. */ 415 prof_init(); 416 #endif 417 418 mbcpuinit(); /* enable per cpu mbuf data */ 419 420 /* init exec and emul */ 421 init_exec(); 422 423 /* Start the scheduler */ 424 scheduler_start(); 425 426 /* 427 * Create process 1 (init(8)). We do this now, as Unix has 428 * historically had init be process 1, and changing this would 429 * probably upset a lot of people. 430 * 431 * Note that process 1 won't immediately exec init(8), but will 432 * wait for us to inform it that the root file system has been 433 * mounted. 434 */ 435 { 436 struct proc *initproc; 437 438 if (fork1(p, FORK_FORK, start_init, NULL, NULL, &initproc)) 439 panic("fork init"); 440 initprocess = initproc->p_p; 441 } 442 443 randompid = 1; 444 445 /* 446 * Create any kernel threads whose creation was deferred because 447 * initprocess had not yet been created. 448 */ 449 kthread_run_deferred_queue(); 450 451 /* 452 * Now that device driver threads have been created, wait for 453 * them to finish any deferred autoconfiguration. Note we don't 454 * need to lock this semaphore, since we haven't booted any 455 * secondary processors, yet. 456 */ 457 while (config_pending) 458 (void) tsleep((void *)&config_pending, PWAIT, "cfpend", 0); 459 460 dostartuphooks(); 461 462 #if NVSCSI > 0 463 config_rootfound("vscsi", NULL); 464 #endif 465 #if NSOFTRAID > 0 466 config_rootfound("softraid", NULL); 467 #endif 468 469 /* Configure root/swap devices */ 470 diskconf(); 471 472 #ifdef DDB 473 /* Make debug symbols available in ddb. */ 474 db_ctf_init(); 475 #endif 476 477 if (mountroot == NULL || ((*mountroot)() != 0)) 478 panic("cannot mount root"); 479 480 TAILQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 481 482 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 483 if (VFS_ROOT(TAILQ_FIRST(&mountlist), &rootvnode)) 484 panic("cannot find root vnode"); 485 p->p_fd->fd_cdir = rootvnode; 486 vref(p->p_fd->fd_cdir); 487 VOP_UNLOCK(rootvnode); 488 p->p_fd->fd_rdir = NULL; 489 490 /* 491 * Now that root is mounted, we can fixup initprocess's CWD 492 * info. All other processes are kthreads, which merely 493 * share proc0's CWD info. 494 */ 495 initprocess->ps_fd->fd_cdir = rootvnode; 496 vref(initprocess->ps_fd->fd_cdir); 497 initprocess->ps_fd->fd_rdir = NULL; 498 499 /* 500 * Now can look at time, having had a chance to verify the time 501 * from the file system. Reset p->p_rtime as it may have been 502 * munched in mi_switch() after the time got set. 503 */ 504 LIST_FOREACH(pr, &allprocess, ps_list) { 505 getnanotime(&pr->ps_start); 506 TAILQ_FOREACH(p, &pr->ps_threads, p_thr_link) { 507 nanouptime(&p->p_cpu->ci_schedstate.spc_runtime); 508 timespecclear(&p->p_rtime); 509 } 510 } 511 512 uvm_swap_init(); 513 514 /* Create the pageout daemon kernel thread. */ 515 if (kthread_create(uvm_pageout, NULL, NULL, "pagedaemon")) 516 panic("fork pagedaemon"); 517 518 /* Create the reaper daemon kernel thread. */ 519 if (kthread_create(reaper, NULL, &reaperproc, "reaper")) 520 panic("fork reaper"); 521 522 /* Create the cleaner daemon kernel thread. */ 523 if (kthread_create(buf_daemon, NULL, &cleanerproc, "cleaner")) 524 panic("fork cleaner"); 525 526 /* Create the update daemon kernel thread. */ 527 if (kthread_create(syncer_thread, NULL, &syncerproc, "update")) 528 panic("fork update"); 529 530 /* Create the aiodone daemon kernel thread. */ 531 if (kthread_create(uvm_aiodone_daemon, NULL, NULL, "aiodoned")) 532 panic("fork aiodoned"); 533 534 #if !defined(__hppa__) 535 /* Create the page zeroing kernel thread. */ 536 if (kthread_create(uvm_pagezero_thread, NULL, NULL, "zerothread")) 537 panic("fork zerothread"); 538 #endif 539 540 #if defined(MULTIPROCESSOR) 541 /* Boot the secondary processors. */ 542 cpu_boot_secondary_processors(); 543 #endif 544 545 config_process_deferred_mountroot(); 546 547 /* 548 * Okay, now we can let init(8) exec! It's off to userland! 549 */ 550 start_init_exec = 1; 551 wakeup((void *)&start_init_exec); 552 553 /* 554 * Start the idle pool page garbage collector 555 */ 556 #if !(defined(__m88k__) && defined(MULTIPROCESSOR)) /* XXX */ 557 pool_gc_pages(NULL); 558 #endif 559 560 start_periodic_resettodr(); 561 562 /* 563 * proc0: nothing to do, back to sleep 564 */ 565 while (1) 566 tsleep(&proc0, PVM, "scheduler", 0); 567 /* NOTREACHED */ 568 } 569 570 /* 571 * List of paths to try when searching for "init". 572 */ 573 static char *initpaths[] = { 574 "/sbin/init", 575 "/sbin/oinit", 576 "/sbin/init.bak", 577 NULL, 578 }; 579 580 void 581 check_console(struct proc *p) 582 { 583 struct nameidata nd; 584 int error; 585 586 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", p); 587 error = namei(&nd); 588 if (error) { 589 if (error == ENOENT) 590 printf("warning: /dev/console does not exist\n"); 591 else 592 printf("warning: /dev/console error %d\n", error); 593 } else 594 vrele(nd.ni_vp); 595 } 596 597 /* 598 * Start the initial user process; try exec'ing each pathname in "initpaths". 599 * The program is invoked with one argument containing the boot flags. 600 */ 601 void 602 start_init(void *arg) 603 { 604 struct proc *p = arg; 605 vaddr_t addr; 606 struct sys_execve_args /* { 607 syscallarg(const char *) path; 608 syscallarg(char *const *) argp; 609 syscallarg(char *const *) envp; 610 } */ args; 611 int options, error; 612 long i; 613 register_t retval[2]; 614 char flags[4], *flagsp; 615 char **pathp, *path, *ucp, **uap, *arg0, *arg1 = NULL; 616 617 /* 618 * Now in process 1. 619 */ 620 621 /* 622 * Wait for main() to tell us that it's safe to exec. 623 */ 624 while (start_init_exec == 0) 625 (void) tsleep((void *)&start_init_exec, PWAIT, "initexec", 0); 626 627 check_console(p); 628 629 /* process 0 ignores SIGCHLD, but we can't */ 630 p->p_p->ps_sigacts->ps_flags = 0; 631 632 /* 633 * Need just enough stack to hold the faked-up "execve()" arguments. 634 */ 635 #ifdef MACHINE_STACK_GROWS_UP 636 addr = USRSTACK; 637 #else 638 addr = USRSTACK - PAGE_SIZE; 639 #endif 640 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 641 p->p_vmspace->vm_minsaddr = (caddr_t)(addr + PAGE_SIZE); 642 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 643 NULL, UVM_UNKNOWN_OFFSET, 0, 644 UVM_MAPFLAG(PROT_READ | PROT_WRITE, PROT_MASK, MAP_INHERIT_COPY, 645 MADV_NORMAL, UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW|UVM_FLAG_STACK))) 646 panic("init: couldn't allocate argument space"); 647 648 for (pathp = &initpaths[0]; (path = *pathp) != NULL; pathp++) { 649 #ifdef MACHINE_STACK_GROWS_UP 650 ucp = (char *)addr; 651 #else 652 ucp = (char *)(addr + PAGE_SIZE); 653 #endif 654 /* 655 * Construct the boot flag argument. 656 */ 657 flagsp = flags; 658 *flagsp++ = '-'; 659 options = 0; 660 661 if (boothowto & RB_SINGLE) { 662 *flagsp++ = 's'; 663 options = 1; 664 } 665 #ifdef notyet 666 if (boothowto & RB_FASTBOOT) { 667 *flagsp++ = 'f'; 668 options = 1; 669 } 670 #endif 671 672 /* 673 * Move out the flags (arg 1), if necessary. 674 */ 675 if (options != 0) { 676 *flagsp++ = '\0'; 677 i = flagsp - flags; 678 #ifdef DEBUG 679 printf("init: copying out flags `%s' %ld\n", flags, i); 680 #endif 681 #ifdef MACHINE_STACK_GROWS_UP 682 arg1 = ucp; 683 (void)copyout((caddr_t)flags, (caddr_t)ucp, i); 684 ucp += i; 685 #else 686 (void)copyout((caddr_t)flags, (caddr_t)(ucp -= i), i); 687 arg1 = ucp; 688 #endif 689 } 690 691 /* 692 * Move out the file name (also arg 0). 693 */ 694 i = strlen(path) + 1; 695 #ifdef DEBUG 696 printf("init: copying out path `%s' %ld\n", path, i); 697 #endif 698 #ifdef MACHINE_STACK_GROWS_UP 699 arg0 = ucp; 700 (void)copyout((caddr_t)path, (caddr_t)ucp, i); 701 ucp += i; 702 ucp = (caddr_t)ALIGN((u_long)ucp); 703 uap = (char **)ucp + 3; 704 #else 705 (void)copyout((caddr_t)path, (caddr_t)(ucp -= i), i); 706 arg0 = ucp; 707 uap = (char **)((u_long)ucp & ~ALIGNBYTES); 708 #endif 709 710 /* 711 * Move out the arg pointers. 712 */ 713 i = 0; 714 copyout(&i, (caddr_t)--uap, sizeof(register_t)); /* terminator */ 715 if (options != 0) 716 copyout(&arg1, (caddr_t)--uap, sizeof(register_t)); 717 copyout(&arg0, (caddr_t)--uap, sizeof(register_t)); 718 719 /* 720 * Point at the arguments. 721 */ 722 SCARG(&args, path) = arg0; 723 SCARG(&args, argp) = uap; 724 SCARG(&args, envp) = NULL; 725 726 /* 727 * Now try to exec the program. If can't for any reason 728 * other than it doesn't exist, complain. 729 */ 730 if ((error = sys_execve(p, &args, retval)) == 0) { 731 KERNEL_UNLOCK(); 732 return; 733 } 734 if (error != ENOENT) 735 printf("exec %s: error %d\n", path, error); 736 } 737 printf("init: not found\n"); 738 panic("no init"); 739 } 740