init_main.c revision 1.277
1 /* $NetBSD: init_main.c,v 1.277 2006/09/08 20:58:57 elad Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)init_main.c 8.16 (Berkeley) 5/14/95 37 */ 38 39 /* 40 * Copyright (c) 1995 Christopher G. Demetriou. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)init_main.c 8.16 (Berkeley) 5/14/95 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: init_main.c,v 1.277 2006/09/08 20:58:57 elad Exp $"); 75 76 #include "opt_ipsec.h" 77 #include "opt_kcont.h" 78 #include "opt_multiprocessor.h" 79 #include "opt_ntp.h" 80 #include "opt_pipe.h" 81 #include "opt_posix.h" 82 #include "opt_syscall_debug.h" 83 #include "opt_sysv.h" 84 #include "opt_fileassoc.h" 85 86 #include "rnd.h" 87 #include "veriexec.h" 88 89 #include <sys/param.h> 90 #include <sys/acct.h> 91 #include <sys/filedesc.h> 92 #include <sys/file.h> 93 #include <sys/errno.h> 94 #include <sys/callout.h> 95 #include <sys/kernel.h> 96 #include <sys/kcont.h> 97 #include <sys/kmem.h> 98 #include <sys/mount.h> 99 #include <sys/proc.h> 100 #include <sys/kthread.h> 101 #include <sys/resourcevar.h> 102 #include <sys/signalvar.h> 103 #include <sys/systm.h> 104 #include <sys/vnode.h> 105 #include <sys/tty.h> 106 #include <sys/conf.h> 107 #include <sys/disklabel.h> 108 #include <sys/buf.h> 109 #include <sys/device.h> 110 #include <sys/exec.h> 111 #include <sys/socketvar.h> 112 #include <sys/protosw.h> 113 #include <sys/reboot.h> 114 #include <sys/user.h> 115 #include <sys/sysctl.h> 116 #include <sys/event.h> 117 #include <sys/mbuf.h> 118 #ifdef FAST_IPSEC 119 #include <netipsec/ipsec.h> 120 #endif 121 #ifdef SYSVSHM 122 #include <sys/shm.h> 123 #endif 124 #ifdef SYSVSEM 125 #include <sys/sem.h> 126 #endif 127 #ifdef SYSVMSG 128 #include <sys/msg.h> 129 #endif 130 #ifdef P1003_1B_SEMAPHORE 131 #include <sys/ksem.h> 132 #endif 133 #include <sys/domain.h> 134 #include <sys/namei.h> 135 #if NRND > 0 136 #include <sys/rnd.h> 137 #endif 138 #ifndef PIPE_SOCKETPAIR 139 #include <sys/pipe.h> 140 #endif 141 #ifdef LKM 142 #include <sys/lkm.h> 143 #endif 144 #if NVERIEXEC > 0 145 #include <sys/verified_exec.h> 146 #endif /* NVERIEXEC > 0 */ 147 #include <sys/kauth.h> 148 #include <net80211/ieee80211_netbsd.h> 149 150 #include <sys/syscall.h> 151 #include <sys/sa.h> 152 #include <sys/syscallargs.h> 153 154 #ifdef FILEASSOC 155 #include <sys/fileassoc.h> 156 #endif /* FILEASSOC */ 157 158 #include <ufs/ufs/quota.h> 159 160 #include <miscfs/genfs/genfs.h> 161 #include <miscfs/syncfs/syncfs.h> 162 163 #include <machine/cpu.h> 164 165 #include <uvm/uvm.h> 166 167 #include <dev/cons.h> 168 169 #include <net/if.h> 170 #include <net/raw_cb.h> 171 172 #include <secmodel/secmodel.h> 173 174 extern struct proc proc0; 175 extern struct lwp lwp0; 176 extern struct cwdinfo cwdi0; 177 178 #ifndef curlwp 179 struct lwp *curlwp = &lwp0; 180 #endif 181 struct proc *initproc; 182 183 struct vnode *rootvp, *swapdev_vp; 184 int boothowto; 185 int cold = 1; /* still working on startup */ 186 struct timeval boottime; /* time at system startup - will only follow settime deltas */ 187 time_t rootfstime; /* recorded root fs time, if known */ 188 189 volatile int start_init_exec; /* semaphore for start_init() */ 190 191 static void check_console(struct lwp *l); 192 static void start_init(void *); 193 void main(void); 194 195 /* 196 * System startup; initialize the world, create process 0, mount root 197 * filesystem, and fork to create init and pagedaemon. Most of the 198 * hard work is done in the lower-level initialization routines including 199 * startup(), which does memory initialization and autoconfiguration. 200 */ 201 void 202 main(void) 203 { 204 #ifdef __HAVE_TIMECOUNTER 205 struct timeval time; 206 #endif 207 struct lwp *l; 208 struct proc *p; 209 struct pdevinit *pdev; 210 int s, error; 211 extern struct pdevinit pdevinit[]; 212 extern void schedcpu(void *); 213 #ifdef NVNODE_IMPLICIT 214 int usevnodes; 215 #endif 216 217 /* 218 * Initialize the current LWP pointer (curlwp) before 219 * any possible traps/probes to simplify trap processing. 220 */ 221 l = &lwp0; 222 curlwp = l; 223 l->l_cpu = curcpu(); 224 l->l_proc = &proc0; 225 l->l_lid = 1; 226 227 /* 228 * Attempt to find console and initialize 229 * in case of early panic or other messages. 230 */ 231 consinit(); 232 233 KERNEL_LOCK_INIT(); 234 235 uvm_init(); 236 237 kmem_init(); 238 239 /* Do machine-dependent initialization. */ 240 cpu_startup(); 241 242 /* Initialize callouts. */ 243 callout_startup(); 244 245 /* Initialize the buffer cache */ 246 bufinit(); 247 248 /* 249 * Initialize mbuf's. Do this now because we might attempt to 250 * allocate mbufs or mbuf clusters during autoconfiguration. 251 */ 252 mbinit(); 253 254 /* Initialize sockets. */ 255 soinit(); 256 257 #ifdef KCONT 258 /* Initialize kcont. */ 259 kcont_init(); 260 #endif 261 262 /* 263 * The following things must be done before autoconfiguration. 264 */ 265 evcnt_init(); /* initialize event counters */ 266 #if NRND > 0 267 rnd_init(); /* initialize RNG */ 268 #endif 269 /* Initialize the sysctl subsystem. */ 270 sysctl_init(); 271 272 /* Initialize process and pgrp structures. */ 273 procinit(); 274 275 /* Initialize signal-related data structures. */ 276 signal_init(); 277 278 /* Create process 0 (the swapper). */ 279 proc0_init(); 280 281 /* 282 * Charge root for one process. 283 */ 284 (void)chgproccnt(0, 1); 285 286 rqinit(); 287 288 /* Initialize the file systems. */ 289 #ifdef NVNODE_IMPLICIT 290 /* 291 * If maximum number of vnodes in namei vnode cache is not explicitly 292 * defined in kernel config, adjust the number such as we use roughly 293 * 1.0% of memory for vnode cache (but not less than NVNODE vnodes). 294 */ 295 usevnodes = (ptoa((unsigned)physmem) / 100) / sizeof(struct vnode); 296 if (usevnodes > desiredvnodes) 297 desiredvnodes = usevnodes; 298 #endif 299 vfsinit(); 300 301 302 #ifdef __HAVE_TIMECOUNTER 303 inittimecounter(); 304 ntp_init(); 305 #endif /* __HAVE_TIMECOUNTER */ 306 307 /* Configure the system hardware. This will enable interrupts. */ 308 configure(); 309 310 ubc_init(); /* must be after autoconfig */ 311 312 /* Lock the kernel on behalf of proc0. */ 313 KERNEL_PROC_LOCK(l); 314 315 #ifdef SYSVSHM 316 /* Initialize System V style shared memory. */ 317 shminit(); 318 #endif 319 320 #ifdef SYSVSEM 321 /* Initialize System V style semaphores. */ 322 seminit(); 323 #endif 324 325 #ifdef SYSVMSG 326 /* Initialize System V style message queues. */ 327 msginit(); 328 #endif 329 330 #ifdef P1003_1B_SEMAPHORE 331 /* Initialize posix semaphores */ 332 ksem_init(); 333 #endif 334 335 /* Initialize kauth. */ 336 kauth_init(); 337 338 /* Initialize default security model. */ 339 secmodel_start(); 340 341 #ifdef FILEASSOC 342 fileassoc_init(); 343 #endif /* FILEASSOC */ 344 345 #if NVERIEXEC > 0 346 /* 347 * Initialise the fingerprint operations vectors before 348 * fingerprints can be loaded. 349 */ 350 veriexec_init_fp_ops(); 351 #endif /* NVERIEXEC > 0 */ 352 353 /* Attach pseudo-devices. */ 354 for (pdev = pdevinit; pdev->pdev_attach != NULL; pdev++) 355 (*pdev->pdev_attach)(pdev->pdev_count); 356 357 #ifdef FAST_IPSEC 358 /* Attach network crypto subsystem */ 359 ipsec_attach(); 360 #endif 361 362 /* 363 * Initialize protocols. Block reception of incoming packets 364 * until everything is ready. 365 */ 366 s = splnet(); 367 ifinit(); 368 domaininit(); 369 if_attachdomain(); 370 splx(s); 371 372 #ifdef GPROF 373 /* Initialize kernel profiling. */ 374 kmstartup(); 375 #endif 376 377 /* Initialize system accouting. */ 378 acct_init(); 379 380 /* Kick off timeout driven events by calling first time. */ 381 schedcpu(NULL); 382 383 /* 384 * Create process 1 (init(8)). We do this now, as Unix has 385 * historically had init be process 1, and changing this would 386 * probably upset a lot of people. 387 * 388 * Note that process 1 won't immediately exec init(8), but will 389 * wait for us to inform it that the root file system has been 390 * mounted. 391 */ 392 if (fork1(l, 0, SIGCHLD, NULL, 0, start_init, NULL, NULL, &initproc)) 393 panic("fork init"); 394 395 /* 396 * Create any kernel threads who's creation was deferred because 397 * initproc had not yet been created. 398 */ 399 kthread_run_deferred_queue(); 400 401 /* 402 * Now that device driver threads have been created, wait for 403 * them to finish any deferred autoconfiguration. Note we don't 404 * need to lock this semaphore, since we haven't booted any 405 * secondary processors, yet. 406 */ 407 while (config_pending) 408 (void) tsleep(&config_pending, PWAIT, "cfpend", 0); 409 410 /* 411 * Finalize configuration now that all real devices have been 412 * found. This needs to be done before the root device is 413 * selected, since finalization may create the root device. 414 */ 415 config_finalize(); 416 417 /* 418 * Now that autoconfiguration has completed, we can determine 419 * the root and dump devices. 420 */ 421 cpu_rootconf(); 422 cpu_dumpconf(); 423 424 /* Mount the root file system. */ 425 do { 426 domountroothook(); 427 if ((error = vfs_mountroot())) { 428 printf("cannot mount root, error = %d\n", error); 429 boothowto |= RB_ASKNAME; 430 setroot(root_device, 431 (rootdev != NODEV) ? DISKPART(rootdev) : 0); 432 } 433 } while (error != 0); 434 mountroothook_destroy(); 435 436 /* 437 * Initialise the time-of-day clock, passing the time recorded 438 * in the root filesystem (if any) for use by systems that 439 * don't have a non-volatile time-of-day device. 440 */ 441 inittodr(rootfstime); 442 443 CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 444 CIRCLEQ_FIRST(&mountlist)->mnt_op->vfs_refcount++; 445 446 /* 447 * Get the vnode for '/'. Set filedesc0.fd_fd.fd_cdir to 448 * reference it. 449 */ 450 error = VFS_ROOT(CIRCLEQ_FIRST(&mountlist), &rootvnode); 451 if (error) 452 panic("cannot find root vnode, error=%d", error); 453 cwdi0.cwdi_cdir = rootvnode; 454 VREF(cwdi0.cwdi_cdir); 455 VOP_UNLOCK(rootvnode, 0); 456 cwdi0.cwdi_rdir = NULL; 457 458 /* 459 * Now that root is mounted, we can fixup initproc's CWD 460 * info. All other processes are kthreads, which merely 461 * share proc0's CWD info. 462 */ 463 initproc->p_cwdi->cwdi_cdir = rootvnode; 464 VREF(initproc->p_cwdi->cwdi_cdir); 465 initproc->p_cwdi->cwdi_rdir = NULL; 466 467 /* 468 * Now can look at time, having had a chance to verify the time 469 * from the file system. Reset p->p_rtime as it may have been 470 * munched in mi_switch() after the time got set. 471 */ 472 proclist_lock_read(); 473 s = splsched(); 474 #ifdef __HAVE_TIMECOUNTER 475 getmicrotime(&time); 476 #else 477 mono_time = time; 478 #endif 479 boottime = time; 480 LIST_FOREACH(p, &allproc, p_list) { 481 KASSERT((p->p_flag & P_MARKER) == 0); 482 p->p_stats->p_start = time; 483 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 484 if (l->l_cpu != NULL) 485 l->l_cpu->ci_schedstate.spc_runtime = time; 486 } 487 p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; 488 } 489 splx(s); 490 proclist_unlock_read(); 491 492 /* Create the pageout daemon kernel thread. */ 493 uvm_swap_init(); 494 if (kthread_create1(uvm_pageout, NULL, NULL, "pagedaemon")) 495 panic("fork pagedaemon"); 496 497 /* Create the filesystem syncer kernel thread. */ 498 if (kthread_create1(sched_sync, NULL, NULL, "ioflush")) 499 panic("fork syncer"); 500 501 /* Create the aiodone daemon kernel thread. */ 502 if (kthread_create1(uvm_aiodone_daemon, NULL, &uvm.aiodoned_proc, 503 "aiodoned")) 504 panic("fork aiodoned"); 505 506 #if defined(MULTIPROCESSOR) 507 /* Boot the secondary processors. */ 508 cpu_boot_secondary_processors(); 509 #endif 510 511 /* Initialize exec structures */ 512 exec_init(1); 513 514 /* 515 * Okay, now we can let init(8) exec! It's off to userland! 516 */ 517 start_init_exec = 1; 518 wakeup(&start_init_exec); 519 520 /* The scheduler is an infinite loop. */ 521 uvm_scheduler(); 522 /* NOTREACHED */ 523 } 524 525 void 526 setrootfstime(time_t t) 527 { 528 rootfstime = t; 529 } 530 531 static void 532 check_console(struct lwp *l) 533 { 534 struct nameidata nd; 535 int error; 536 537 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", l); 538 error = namei(&nd); 539 if (error == 0) 540 vrele(nd.ni_vp); 541 else if (error == ENOENT) 542 printf("warning: no /dev/console\n"); 543 else 544 printf("warning: lookup /dev/console: error %d\n", error); 545 } 546 547 /* 548 * List of paths to try when searching for "init". 549 */ 550 static const char *initpaths[] = { 551 "/sbin/init", 552 "/sbin/oinit", 553 "/sbin/init.bak", 554 NULL, 555 }; 556 557 /* 558 * Start the initial user process; try exec'ing each pathname in "initpaths". 559 * The program is invoked with one argument containing the boot flags. 560 */ 561 static void 562 start_init(void *arg) 563 { 564 struct lwp *l = arg; 565 struct proc *p = l->l_proc; 566 vaddr_t addr; 567 struct sys_execve_args /* { 568 syscallarg(const char *) path; 569 syscallarg(char * const *) argp; 570 syscallarg(char * const *) envp; 571 } */ args; 572 int options, i, error; 573 register_t retval[2]; 574 char flags[4], *flagsp; 575 const char *path, *slash; 576 char *ucp, **uap, *arg0, *arg1 = NULL; 577 char ipath[129]; 578 int ipx, len; 579 580 /* 581 * Now in process 1. 582 */ 583 strncpy(p->p_comm, "init", MAXCOMLEN); 584 585 /* 586 * Wait for main() to tell us that it's safe to exec. 587 */ 588 while (start_init_exec == 0) 589 (void) tsleep(&start_init_exec, PWAIT, "initexec", 0); 590 591 /* 592 * This is not the right way to do this. We really should 593 * hand-craft a descriptor onto /dev/console to hand to init, 594 * but that's a _lot_ more work, and the benefit from this easy 595 * hack makes up for the "good is the enemy of the best" effect. 596 */ 597 check_console(l); 598 599 /* 600 * Need just enough stack to hold the faked-up "execve()" arguments. 601 */ 602 addr = (vaddr_t)STACK_ALLOC(USRSTACK, PAGE_SIZE); 603 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 604 NULL, UVM_UNKNOWN_OFFSET, 0, 605 UVM_MAPFLAG(UVM_PROT_ALL, UVM_PROT_ALL, UVM_INH_COPY, 606 UVM_ADV_NORMAL, 607 UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW)) != 0) 608 panic("init: couldn't allocate argument space"); 609 p->p_vmspace->vm_maxsaddr = (caddr_t)STACK_MAX(addr, PAGE_SIZE); 610 611 ipx = 0; 612 while (1) { 613 if (boothowto & RB_ASKNAME) { 614 printf("init path"); 615 if (initpaths[ipx]) 616 printf(" (default %s)", initpaths[ipx]); 617 printf(": "); 618 len = cngetsn(ipath, sizeof(ipath)-1); 619 if (len == 0) { 620 if (initpaths[ipx]) 621 path = initpaths[ipx++]; 622 else 623 continue; 624 } else { 625 ipath[len] = '\0'; 626 path = ipath; 627 } 628 } else { 629 if ((path = initpaths[ipx++]) == NULL) 630 break; 631 } 632 633 ucp = (char *)USRSTACK; 634 635 /* 636 * Construct the boot flag argument. 637 */ 638 flagsp = flags; 639 *flagsp++ = '-'; 640 options = 0; 641 642 if (boothowto & RB_SINGLE) { 643 *flagsp++ = 's'; 644 options = 1; 645 } 646 #ifdef notyet 647 if (boothowto & RB_FASTBOOT) { 648 *flagsp++ = 'f'; 649 options = 1; 650 } 651 #endif 652 653 /* 654 * Move out the flags (arg 1), if necessary. 655 */ 656 if (options != 0) { 657 *flagsp++ = '\0'; 658 i = flagsp - flags; 659 #ifdef DEBUG 660 printf("init: copying out flags `%s' %d\n", flags, i); 661 #endif 662 arg1 = STACK_ALLOC(ucp, i); 663 ucp = STACK_MAX(arg1, i); 664 (void)copyout((caddr_t)flags, arg1, i); 665 } 666 667 /* 668 * Move out the file name (also arg 0). 669 */ 670 i = strlen(path) + 1; 671 #ifdef DEBUG 672 printf("init: copying out path `%s' %d\n", path, i); 673 #else 674 if (boothowto & RB_ASKNAME || path != initpaths[0]) 675 printf("init: trying %s\n", path); 676 #endif 677 arg0 = STACK_ALLOC(ucp, i); 678 ucp = STACK_MAX(arg0, i); 679 (void)copyout(path, arg0, i); 680 681 /* 682 * Move out the arg pointers. 683 */ 684 ucp = (caddr_t)STACK_ALIGN(ucp, ALIGNBYTES); 685 uap = (char **)STACK_ALLOC(ucp, sizeof(char *) * 3); 686 SCARG(&args, path) = arg0; 687 SCARG(&args, argp) = uap; 688 SCARG(&args, envp) = NULL; 689 slash = strrchr(path, '/'); 690 if (slash) 691 (void)suword((caddr_t)uap++, 692 (long)arg0 + (slash + 1 - path)); 693 else 694 (void)suword((caddr_t)uap++, (long)arg0); 695 if (options != 0) 696 (void)suword((caddr_t)uap++, (long)arg1); 697 (void)suword((caddr_t)uap++, 0); /* terminator */ 698 699 /* 700 * Now try to exec the program. If can't for any reason 701 * other than it doesn't exist, complain. 702 */ 703 error = sys_execve(l, &args, retval); 704 if (error == 0 || error == EJUSTRETURN) { 705 KERNEL_PROC_UNLOCK(l); 706 return; 707 } 708 printf("exec %s: error %d\n", path, error); 709 } 710 printf("init: not found\n"); 711 panic("no init"); 712 } 713
Indexes created Sun Sep 21 16:09:51 GMT 2025