init_main.c revision 1.252
1 /* $NetBSD: init_main.c,v 1.252 2005/11/18 16:40:08 skrll 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 1.252 2005/11/18 16:40:08 skrll Exp $"); 75 76 #include "fs_nfs.h" 77 #include "opt_nfsserver.h" 78 #include "opt_ipsec.h" 79 #include "opt_sysv.h" 80 #include "opt_maxuprc.h" 81 #include "opt_multiprocessor.h" 82 #include "opt_pipe.h" 83 #include "opt_syscall_debug.h" 84 #include "opt_systrace.h" 85 #include "opt_posix.h" 86 #include "opt_kcont.h" 87 #include "opt_rootfs_magiclinks.h" 88 #include "opt_verified_exec.h" 89 90 #include "opencrypto.h" 91 #include "rnd.h" 92 93 #include <sys/param.h> 94 #include <sys/acct.h> 95 #include <sys/filedesc.h> 96 #include <sys/file.h> 97 #include <sys/errno.h> 98 #include <sys/callout.h> 99 #include <sys/kernel.h> 100 #include <sys/kcont.h> 101 #include <sys/mount.h> 102 #include <sys/proc.h> 103 #include <sys/kthread.h> 104 #include <sys/resourcevar.h> 105 #include <sys/signalvar.h> 106 #include <sys/systm.h> 107 #include <sys/vnode.h> 108 #include <sys/tty.h> 109 #include <sys/conf.h> 110 #include <sys/disklabel.h> 111 #include <sys/buf.h> 112 #include <sys/device.h> 113 #include <sys/exec.h> 114 #include <sys/socketvar.h> 115 #include <sys/protosw.h> 116 #include <sys/reboot.h> 117 #include <sys/user.h> 118 #include <sys/sysctl.h> 119 #include <sys/event.h> 120 #include <sys/mbuf.h> 121 #ifdef FAST_IPSEC 122 #include <netipsec/ipsec.h> 123 #endif 124 #ifdef SYSVSHM 125 #include <sys/shm.h> 126 #endif 127 #ifdef SYSVSEM 128 #include <sys/sem.h> 129 #endif 130 #ifdef SYSVMSG 131 #include <sys/msg.h> 132 #endif 133 #ifdef P1003_1B_SEMAPHORE 134 #include <sys/ksem.h> 135 #endif 136 #ifdef SYSTRACE 137 #include <sys/systrace.h> 138 #endif 139 #include <sys/domain.h> 140 #include <sys/namei.h> 141 #if NOPENCRYPTO > 0 142 #include <opencrypto/cryptodev.h> /* XXX really the framework */ 143 #endif 144 #if NRND > 0 145 #include <sys/rnd.h> 146 #endif 147 #ifndef PIPE_SOCKETPAIR 148 #include <sys/pipe.h> 149 #endif 150 #ifdef LKM 151 #include <sys/lkm.h> 152 #endif 153 #ifdef VERIFIED_EXEC 154 #include <sys/verified_exec.h> 155 #endif 156 #include <net80211/ieee80211_netbsd.h> 157 158 #include <sys/syscall.h> 159 #include <sys/sa.h> 160 #include <sys/syscallargs.h> 161 162 #include <ufs/ufs/quota.h> 163 164 #include <miscfs/genfs/genfs.h> 165 #include <miscfs/syncfs/syncfs.h> 166 167 #include <machine/cpu.h> 168 169 #include <uvm/uvm.h> 170 171 #include <dev/cons.h> 172 173 #include <net/if.h> 174 #include <net/raw_cb.h> 175 176 extern struct proc proc0; 177 extern struct lwp lwp0; 178 extern struct cwdinfo cwdi0; 179 180 #ifndef curlwp 181 struct lwp *curlwp = &lwp0; 182 #endif 183 struct proc *initproc; 184 185 struct vnode *rootvp, *swapdev_vp; 186 int boothowto; 187 int cold = 1; /* still working on startup */ 188 struct timeval boottime; 189 time_t rootfstime; /* recorded root fs time, if known */ 190 191 __volatile int start_init_exec; /* semaphore for start_init() */ 192 193 static void check_console(struct proc *p); 194 static void start_init(void *); 195 void main(void); 196 197 /* 198 * System startup; initialize the world, create process 0, mount root 199 * filesystem, and fork to create init and pagedaemon. Most of the 200 * hard work is done in the lower-level initialization routines including 201 * startup(), which does memory initialization and autoconfiguration. 202 */ 203 void 204 main(void) 205 { 206 struct lwp *l; 207 struct proc *p; 208 struct pdevinit *pdev; 209 int s, error; 210 extern struct pdevinit pdevinit[]; 211 extern void schedcpu(void *); 212 #if defined(NFSSERVER) || defined(NFS) 213 extern void nfs_init(void); 214 #endif 215 #ifdef NVNODE_IMPLICIT 216 int usevnodes; 217 #endif 218 219 /* 220 * Initialize the current LWP pointer (curlwp) before 221 * any possible traps/probes to simplify trap processing. 222 */ 223 l = &lwp0; 224 curlwp = l; 225 l->l_cpu = curcpu(); 226 l->l_proc = &proc0; 227 l->l_lid = 1; 228 229 /* 230 * Attempt to find console and initialize 231 * in case of early panic or other messages. 232 */ 233 consinit(); 234 235 KERNEL_LOCK_INIT(); 236 237 uvm_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 tty_init(); /* initialize tty list */ 267 #if NRND > 0 268 rnd_init(); /* initialize RNG */ 269 #endif 270 #if NOPENCRYPTO > 0 271 /* Initialize crypto subsystem before configuring crypto hardware. */ 272 (void)crypto_init(); 273 #endif 274 /* Initialize the sysctl subsystem. */ 275 sysctl_init(); 276 277 /* Initialize process and pgrp structures. */ 278 procinit(); 279 280 #ifdef LKM 281 /* Initialize the LKM system. */ 282 lkm_init(); 283 #endif 284 285 /* Initialize signal-related data structures. */ 286 signal_init(); 287 288 /* Initialize the net80211 layer */ 289 ieee80211_init(); 290 291 /* Create process 0 (the swapper). */ 292 proc0_init(); 293 294 /* 295 * Charge root for one process. 296 */ 297 (void)chgproccnt(0, 1); 298 299 rqinit(); 300 301 /* Initialize the file systems. */ 302 #if defined(NFSSERVER) || defined(NFS) 303 nfs_init(); /* initialize server/shared data */ 304 #endif 305 #ifdef NVNODE_IMPLICIT 306 /* 307 * If maximum number of vnodes in namei vnode cache is not explicitly 308 * defined in kernel config, adjust the number such as we use roughly 309 * 1.0% of memory for vnode cache (but not less than NVNODE vnodes). 310 */ 311 usevnodes = (ptoa((unsigned)physmem) / 100) / sizeof(struct vnode); 312 if (usevnodes > desiredvnodes) 313 desiredvnodes = usevnodes; 314 #endif 315 vfsinit(); 316 317 /* Configure the system hardware. This will enable interrupts. */ 318 configure(); 319 320 ubc_init(); /* must be after autoconfig */ 321 322 /* Lock the kernel on behalf of proc0. */ 323 KERNEL_PROC_LOCK(l); 324 325 #ifdef SYSVSHM 326 /* Initialize System V style shared memory. */ 327 shminit(); 328 #endif 329 330 #ifdef SYSVSEM 331 /* Initialize System V style semaphores. */ 332 seminit(); 333 #endif 334 335 #ifdef SYSVMSG 336 /* Initialize System V style message queues. */ 337 msginit(); 338 #endif 339 340 #ifdef P1003_1B_SEMAPHORE 341 /* Initialize posix semaphores */ 342 ksem_init(); 343 #endif 344 345 #ifdef VERIFIED_EXEC 346 /* 347 * Initialise the fingerprint operations vectors before 348 * fingerprints can be loaded. 349 */ 350 veriexec_init_fp_ops(); 351 #endif 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 #ifdef SYSTRACE 381 systrace_init(); 382 #endif 383 384 /* Kick off timeout driven events by calling first time. */ 385 schedcpu(NULL); 386 387 /* 388 * Create process 1 (init(8)). We do this now, as Unix has 389 * historically had init be process 1, and changing this would 390 * probably upset a lot of people. 391 * 392 * Note that process 1 won't immediately exec init(8), but will 393 * wait for us to inform it that the root file system has been 394 * mounted. 395 */ 396 if (fork1(l, 0, SIGCHLD, NULL, 0, start_init, NULL, NULL, &initproc)) 397 panic("fork init"); 398 399 /* 400 * Create any kernel threads who's creation was deferred because 401 * initproc had not yet been created. 402 */ 403 kthread_run_deferred_queue(); 404 405 /* 406 * Now that device driver threads have been created, wait for 407 * them to finish any deferred autoconfiguration. Note we don't 408 * need to lock this semaphore, since we haven't booted any 409 * secondary processors, yet. 410 */ 411 while (config_pending) 412 (void) tsleep(&config_pending, PWAIT, "cfpend", 0); 413 414 /* 415 * Finalize configuration now that all real devices have been 416 * found. This needs to be done before the root device is 417 * selected, since finalization may create the root device. 418 */ 419 config_finalize(); 420 421 /* 422 * Now that autoconfiguration has completed, we can determine 423 * the root and dump devices. 424 */ 425 cpu_rootconf(); 426 cpu_dumpconf(); 427 428 /* Mount the root file system. */ 429 do { 430 domountroothook(); 431 if ((error = vfs_mountroot())) { 432 printf("cannot mount root, error = %d\n", error); 433 boothowto |= RB_ASKNAME; 434 setroot(root_device, 435 (rootdev != NODEV) ? DISKPART(rootdev) : 0); 436 } 437 } while (error != 0); 438 mountroothook_destroy(); 439 440 /* 441 * Initialise the time-of-day clock, passing the time recorded 442 * in the root filesystem (if any) for use by systems that 443 * don't have a non-volatile time-of-day device. 444 */ 445 inittodr(rootfstime); 446 447 CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS; 448 #ifdef ROOTFS_MAGICLINKS 449 CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_MAGICLINKS; 450 #endif 451 CIRCLEQ_FIRST(&mountlist)->mnt_op->vfs_refcount++; 452 453 /* 454 * Get the vnode for '/'. Set filedesc0.fd_fd.fd_cdir to 455 * reference it. 456 */ 457 error = VFS_ROOT(CIRCLEQ_FIRST(&mountlist), &rootvnode); 458 if (error) 459 panic("cannot find root vnode, error=%d", error); 460 cwdi0.cwdi_cdir = rootvnode; 461 VREF(cwdi0.cwdi_cdir); 462 VOP_UNLOCK(rootvnode, 0); 463 cwdi0.cwdi_rdir = NULL; 464 465 /* 466 * Now that root is mounted, we can fixup initproc's CWD 467 * info. All other processes are kthreads, which merely 468 * share proc0's CWD info. 469 */ 470 initproc->p_cwdi->cwdi_cdir = rootvnode; 471 VREF(initproc->p_cwdi->cwdi_cdir); 472 initproc->p_cwdi->cwdi_rdir = NULL; 473 474 /* 475 * Now can look at time, having had a chance to verify the time 476 * from the file system. Reset p->p_rtime as it may have been 477 * munched in mi_switch() after the time got set. 478 */ 479 proclist_lock_read(); 480 s = splsched(); 481 LIST_FOREACH(p, &allproc, p_list) { 482 KASSERT((p->p_flag & P_MARKER) == 0); 483 p->p_stats->p_start = mono_time = boottime = time; 484 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 485 if (l->l_cpu != NULL) 486 l->l_cpu->ci_schedstate.spc_runtime = time; 487 } 488 p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; 489 } 490 splx(s); 491 proclist_unlock_read(); 492 493 /* Create the pageout daemon kernel thread. */ 494 uvm_swap_init(); 495 if (kthread_create1(uvm_pageout, NULL, NULL, "pagedaemon")) 496 panic("fork pagedaemon"); 497 498 /* Create the filesystem syncer kernel thread. */ 499 if (kthread_create1(sched_sync, NULL, NULL, "ioflush")) 500 panic("fork syncer"); 501 502 /* Create the aiodone daemon kernel thread. */ 503 if (kthread_create1(uvm_aiodone_daemon, NULL, &uvm.aiodoned_proc, 504 "aiodoned")) 505 panic("fork aiodoned"); 506 507 #if defined(MULTIPROCESSOR) 508 /* Boot the secondary processors. */ 509 cpu_boot_secondary_processors(); 510 #endif 511 512 /* Initialize exec structures */ 513 exec_init(1); 514 515 /* 516 * Okay, now we can let init(8) exec! It's off to userland! 517 */ 518 start_init_exec = 1; 519 wakeup(&start_init_exec); 520 521 /* The scheduler is an infinite loop. */ 522 uvm_scheduler(); 523 /* NOTREACHED */ 524 } 525 526 void 527 setrootfstime(time_t t) 528 { 529 530 rootfstime = t; 531 } 532 533 static void 534 check_console(struct proc *p) 535 { 536 struct nameidata nd; 537 int error; 538 539 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console", p); 540 error = namei(&nd); 541 if (error == 0) 542 vrele(nd.ni_vp); 543 else if (error == ENOENT) 544 printf("warning: no /dev/console\n"); 545 else 546 printf("warning: lookup /dev/console: error %d\n", error); 547 } 548 549 /* 550 * List of paths to try when searching for "init". 551 */ 552 static const char *initpaths[] = { 553 "/sbin/init", 554 "/sbin/oinit", 555 "/sbin/init.bak", 556 NULL, 557 }; 558 559 /* 560 * Start the initial user process; try exec'ing each pathname in "initpaths". 561 * The program is invoked with one argument containing the boot flags. 562 */ 563 static void 564 start_init(void *arg) 565 { 566 struct lwp *l = arg; 567 struct proc *p = l->l_proc; 568 vaddr_t addr; 569 struct sys_execve_args /* { 570 syscallarg(const char *) path; 571 syscallarg(char * const *) argp; 572 syscallarg(char * const *) envp; 573 } */ args; 574 int options, i, error; 575 register_t retval[2]; 576 char flags[4], *flagsp; 577 const char *path, *slash; 578 char *ucp, **uap, *arg0, *arg1 = NULL; 579 char ipath[129]; 580 int ipx, len; 581 582 /* 583 * Now in process 1. 584 */ 585 strncpy(p->p_comm, "init", MAXCOMLEN); 586 587 /* 588 * Wait for main() to tell us that it's safe to exec. 589 */ 590 while (start_init_exec == 0) 591 (void) tsleep(&start_init_exec, PWAIT, "initexec", 0); 592 593 /* 594 * This is not the right way to do this. We really should 595 * hand-craft a descriptor onto /dev/console to hand to init, 596 * but that's a _lot_ more work, and the benefit from this easy 597 * hack makes up for the "good is the enemy of the best" effect. 598 */ 599 check_console(p); 600 601 /* 602 * Need just enough stack to hold the faked-up "execve()" arguments. 603 */ 604 addr = (vaddr_t)STACK_ALLOC(USRSTACK, PAGE_SIZE); 605 if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE, 606 NULL, UVM_UNKNOWN_OFFSET, 0, 607 UVM_MAPFLAG(UVM_PROT_ALL, UVM_PROT_ALL, UVM_INH_COPY, 608 UVM_ADV_NORMAL, 609 UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW)) != 0) 610 panic("init: couldn't allocate argument space"); 611 p->p_vmspace->vm_maxsaddr = (caddr_t)STACK_MAX(addr, PAGE_SIZE); 612 613 ipx = 0; 614 while (1) { 615 if (boothowto & RB_ASKNAME) { 616 printf("init path"); 617 if (initpaths[ipx]) 618 printf(" (default %s)", initpaths[ipx]); 619 printf(": "); 620 len = cngetsn(ipath, sizeof(ipath)-1); 621 if (len == 0) { 622 if (initpaths[ipx]) 623 path = initpaths[ipx++]; 624 else 625 continue; 626 } else { 627 ipath[len] = '\0'; 628 path = ipath; 629 } 630 } else { 631 if ((path = initpaths[ipx++]) == NULL) 632 break; 633 } 634 635 ucp = (char *)USRSTACK; 636 637 /* 638 * Construct the boot flag argument. 639 */ 640 flagsp = flags; 641 *flagsp++ = '-'; 642 options = 0; 643 644 if (boothowto & RB_SINGLE) { 645 *flagsp++ = 's'; 646 options = 1; 647 } 648 #ifdef notyet 649 if (boothowto & RB_FASTBOOT) { 650 *flagsp++ = 'f'; 651 options = 1; 652 } 653 #endif 654 655 /* 656 * Move out the flags (arg 1), if necessary. 657 */ 658 if (options != 0) { 659 *flagsp++ = '\0'; 660 i = flagsp - flags; 661 #ifdef DEBUG 662 printf("init: copying out flags `%s' %d\n", flags, i); 663 #endif 664 arg1 = STACK_ALLOC(ucp, i); 665 ucp = STACK_MAX(arg1, i); 666 (void)copyout((caddr_t)flags, arg1, i); 667 } 668 669 /* 670 * Move out the file name (also arg 0). 671 */ 672 i = strlen(path) + 1; 673 #ifdef DEBUG 674 printf("init: copying out path `%s' %d\n", path, i); 675 #else 676 if (boothowto & RB_ASKNAME || path != initpaths[0]) 677 printf("init: trying %s\n", path); 678 #endif 679 arg0 = STACK_ALLOC(ucp, i); 680 ucp = STACK_MAX(arg0, i); 681 (void)copyout(path, arg0, i); 682 683 /* 684 * Move out the arg pointers. 685 */ 686 ucp = (caddr_t)STACK_ALIGN(ucp, ALIGNBYTES); 687 uap = (char **)STACK_ALLOC(ucp, sizeof(char *) * 3); 688 SCARG(&args, path) = arg0; 689 SCARG(&args, argp) = uap; 690 SCARG(&args, envp) = NULL; 691 slash = strrchr(path, '/'); 692 if (slash) 693 (void)suword((caddr_t)uap++, 694 (long)arg0 + (slash + 1 - path)); 695 else 696 (void)suword((caddr_t)uap++, (long)arg0); 697 if (options != 0) 698 (void)suword((caddr_t)uap++, (long)arg1); 699 (void)suword((caddr_t)uap++, 0); /* terminator */ 700 701 /* 702 * Now try to exec the program. If can't for any reason 703 * other than it doesn't exist, complain. 704 */ 705 error = sys_execve(LIST_FIRST(&p->p_lwps), &args, retval); 706 if (error == 0 || error == EJUSTRETURN) { 707 KERNEL_PROC_UNLOCK(l); 708 return; 709 } 710 printf("exec %s: error %d\n", path, error); 711 } 712 printf("init: not found\n"); 713 panic("no init"); 714 } 715
Indexes created Mon Sep 22 05:09:51 GMT 2025