Annotation of src/sys/kern/init_main.c, Revision 1.379
1.379 ! pooka 1: /* $NetBSD: init_main.c,v 1.378 2008/12/07 20:58:46 pooka Exp $ */
1.347 ad 2:
3: /*-
4: * Copyright (c) 2008 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26: * POSSIBILITY OF SUCH DAMAGE.
27: */
1.61 mycroft 28:
29: /*
30: * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
31: * The Regents of the University of California. All rights reserved.
32: * (c) UNIX System Laboratories, Inc.
33: * All or some portions of this file are derived from material licensed
34: * to the University of California by American Telephone and Telegraph
35: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
36: * the permission of UNIX System Laboratories, Inc.
37: *
38: * Redistribution and use in source and binary forms, with or without
39: * modification, are permitted provided that the following conditions
40: * are met:
41: * 1. Redistributions of source code must retain the above copyright
42: * notice, this list of conditions and the following disclaimer.
43: * 2. Redistributions in binary form must reproduce the above copyright
44: * notice, this list of conditions and the following disclaimer in the
45: * documentation and/or other materials provided with the distribution.
1.224 agc 46: * 3. Neither the name of the University nor the names of its contributors
47: * may be used to endorse or promote products derived from this software
48: * without specific prior written permission.
49: *
50: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60: * SUCH DAMAGE.
61: *
62: * @(#)init_main.c 8.16 (Berkeley) 5/14/95
63: */
64:
65: /*
66: * Copyright (c) 1995 Christopher G. Demetriou. All rights reserved.
67: *
68: * Redistribution and use in source and binary forms, with or without
69: * modification, are permitted provided that the following conditions
70: * are met:
71: * 1. Redistributions of source code must retain the above copyright
72: * notice, this list of conditions and the following disclaimer.
73: * 2. Redistributions in binary form must reproduce the above copyright
74: * notice, this list of conditions and the following disclaimer in the
75: * documentation and/or other materials provided with the distribution.
1.61 mycroft 76: * 3. All advertising materials mentioning features or use of this software
77: * must display the following acknowledgement:
78: * This product includes software developed by the University of
79: * California, Berkeley and its contributors.
80: * 4. Neither the name of the University nor the names of its contributors
81: * may be used to endorse or promote products derived from this software
82: * without specific prior written permission.
83: *
84: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
85: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
86: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
87: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
88: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
89: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
90: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94: * SUCH DAMAGE.
95: *
1.118 fvdl 96: * @(#)init_main.c 8.16 (Berkeley) 5/14/95
1.61 mycroft 97: */
1.196 lukem 98:
99: #include <sys/cdefs.h>
1.379 ! pooka 100: __KERNEL_RCSID(0, "$NetBSD: init_main.c,v 1.378 2008/12/07 20:58:46 pooka Exp $");
1.115 mrg 101:
1.370 tsutsui 102: #include "opt_ddb.h"
1.223 jonathan 103: #include "opt_ipsec.h"
1.267 kardel 104: #include "opt_ntp.h"
1.198 jdolecek 105: #include "opt_pipe.h"
1.172 soren 106: #include "opt_syscall_debug.h"
1.267 kardel 107: #include "opt_sysv.h"
1.292 ad 108: #include "opt_fileassoc.h"
109: #include "opt_ktrace.h"
1.281 elad 110: #include "opt_pax.h"
1.361 simonb 111: #include "opt_wapbl.h"
1.61 mycroft 112:
1.377 he 113: #include "ksyms.h"
1.106 explorer 114: #include "rnd.h"
1.305 xtraeme 115: #include "sysmon_envsys.h"
116: #include "sysmon_power.h"
1.313 xtraeme 117: #include "sysmon_taskq.h"
118: #include "sysmon_wdog.h"
1.276 dogcow 119: #include "veriexec.h"
1.106 explorer 120:
1.61 mycroft 121: #include <sys/param.h>
1.164 enami 122: #include <sys/acct.h>
1.61 mycroft 123: #include <sys/filedesc.h>
1.131 thorpej 124: #include <sys/file.h>
1.61 mycroft 125: #include <sys/errno.h>
1.162 thorpej 126: #include <sys/callout.h>
1.302 yamt 127: #include <sys/cpu.h>
1.61 mycroft 128: #include <sys/kernel.h>
129: #include <sys/mount.h>
130: #include <sys/proc.h>
1.136 thorpej 131: #include <sys/kthread.h>
1.61 mycroft 132: #include <sys/resourcevar.h>
133: #include <sys/signalvar.h>
134: #include <sys/systm.h>
135: #include <sys/vnode.h>
1.288 hannken 136: #include <sys/fstrans.h>
1.87 thorpej 137: #include <sys/tty.h>
1.61 mycroft 138: #include <sys/conf.h>
1.95 thorpej 139: #include <sys/disklabel.h>
1.61 mycroft 140: #include <sys/buf.h>
141: #include <sys/device.h>
1.186 jdolecek 142: #include <sys/exec.h>
1.128 thorpej 143: #include <sys/socketvar.h>
1.61 mycroft 144: #include <sys/protosw.h>
1.338 yamt 145: #include <sys/percpu.h>
1.342 rmind 146: #include <sys/pset.h>
1.338 yamt 147: #include <sys/sysctl.h>
1.61 mycroft 148: #include <sys/reboot.h>
149: #include <sys/user.h>
1.176 thorpej 150: #include <sys/sysctl.h>
1.209 jdolecek 151: #include <sys/event.h>
1.227 jonathan 152: #include <sys/mbuf.h>
1.302 yamt 153: #include <sys/sched.h>
1.292 ad 154: #include <sys/sleepq.h>
1.284 ad 155: #include <sys/iostat.h>
1.304 yamt 156: #include <sys/vmem.h>
1.307 ad 157: #include <sys/uuid.h>
158: #include <sys/extent.h>
1.309 ad 159: #include <sys/disk.h>
1.314 rmind 160: #include <sys/mqueue.h>
1.325 ad 161: #include <sys/msgbuf.h>
1.340 ad 162: #include <sys/module.h>
1.343 ad 163: #include <sys/event.h>
1.357 ad 164: #include <sys/lockf.h>
1.364 pooka 165: #include <sys/once.h>
1.367 ad 166: #include <sys/ksyms.h>
1.365 pooka 167: #include <sys/uidinfo.h>
1.379 ! pooka 168: #include <sys/kprintf.h>
1.233 junyoung 169: #ifdef FAST_IPSEC
1.223 jonathan 170: #include <netipsec/ipsec.h>
171: #endif
1.82 christos 172: #ifdef SYSVSHM
173: #include <sys/shm.h>
174: #endif
1.233 junyoung 175: #ifdef SYSVSEM
1.82 christos 176: #include <sys/sem.h>
177: #endif
178: #ifdef SYSVMSG
179: #include <sys/msg.h>
180: #endif
181: #include <sys/domain.h>
1.94 mouse 182: #include <sys/namei.h>
1.106 explorer 183: #if NRND > 0
1.103 explorer 184: #include <sys/rnd.h>
1.106 explorer 185: #endif
1.192 jdolecek 186: #include <sys/pipe.h>
1.273 elad 187: #if NVERIEXEC > 0
1.245 blymn 188: #include <sys/verified_exec.h>
1.273 elad 189: #endif /* NVERIEXEC > 0 */
1.292 ad 190: #ifdef KTRACE
191: #include <sys/ktrace.h>
192: #endif
1.266 elad 193: #include <sys/kauth.h>
1.361 simonb 194: #ifdef WAPBL
195: #include <sys/wapbl.h>
196: #endif
1.252 skrll 197: #include <net80211/ieee80211_netbsd.h>
1.61 mycroft 198:
1.77 christos 199: #include <sys/syscall.h>
1.68 cgd 200: #include <sys/syscallargs.h>
201:
1.334 elad 202: #if defined(PAX_MPROTECT) || defined(PAX_SEGVGUARD) || defined(PAX_ASLR)
1.281 elad 203: #include <sys/pax.h>
1.334 elad 204: #endif /* PAX_MPROTECT || PAX_SEGVGUARD || PAX_ASLR */
205:
1.61 mycroft 206: #include <ufs/ufs/quota.h>
207:
1.159 fvdl 208: #include <miscfs/genfs/genfs.h>
209: #include <miscfs/syncfs/syncfs.h>
210:
1.323 ad 211: #include <sys/cpu.h>
1.61 mycroft 212:
1.114 mrg 213: #include <uvm/uvm.h>
214:
1.310 xtraeme 215: #if NSYSMON_TASKQ > 0
216: #include <dev/sysmon/sysmon_taskq.h>
217: #endif
218:
1.202 lukem 219: #include <dev/cons.h>
1.310 xtraeme 220:
1.313 xtraeme 221: #if NSYSMON_ENVSYS > 0 || NSYSMON_POWER > 0 || NSYSMON_WDOG > 0
1.305 xtraeme 222: #include <dev/sysmon/sysmonvar.h>
223: #endif
1.202 lukem 224:
1.81 christos 225: #include <net/if.h>
226: #include <net/raw_cb.h>
1.61 mycroft 227:
1.277 elad 228: #include <secmodel/secmodel.h>
229:
1.251 junyoung 230: extern struct proc proc0;
231: extern struct lwp lwp0;
232: extern struct cwdinfo cwdi0;
1.311 pooka 233: extern time_t rootfstime;
1.251 junyoung 234:
1.216 thorpej 235: #ifndef curlwp
236: struct lwp *curlwp = &lwp0;
1.133 pk 237: #endif
1.105 mycroft 238: struct proc *initproc;
1.61 mycroft 239:
240: struct vnode *rootvp, *swapdev_vp;
241: int boothowto;
1.156 thorpej 242: int cold = 1; /* still working on startup */
1.272 kardel 243: struct timeval boottime; /* time at system startup - will only follow settime deltas */
1.61 mycroft 244:
1.356 ad 245: int start_init_exec; /* semaphore for start_init() */
1.163 thorpej 246:
1.260 christos 247: static void check_console(struct lwp *l);
1.176 thorpej 248: static void start_init(void *);
249: void main(void);
1.349 ad 250: void ssp_init(void);
1.76 cgd 251:
1.280 christos 252: #if defined(__SSP__) || defined(__SSP_ALL__)
253: long __stack_chk_guard[8] = {0, 0, 0, 0, 0, 0, 0, 0};
254: void __stack_chk_fail(void);
255:
256: void
257: __stack_chk_fail(void)
258: {
259: panic("stack overflow detected; terminated");
260: }
1.349 ad 261:
262: void
263: ssp_init(void)
264: {
265: int s;
266:
267: #ifdef DIAGNOSTIC
268: printf("Initializing SSP:");
269: #endif
270: /*
271: * We initialize ssp here carefully:
272: * 1. after we got some entropy
273: * 2. without calling a function
274: */
275: size_t i;
276: long guard[__arraycount(__stack_chk_guard)];
277:
278: arc4randbytes(guard, sizeof(guard));
279: s = splhigh();
280: for (i = 0; i < __arraycount(guard); i++)
281: __stack_chk_guard[i] = guard[i];
282: splx(s);
283: #ifdef DIAGNOSTIC
284: for (i = 0; i < __arraycount(guard); i++)
285: printf("%lx ", guard[i]);
286: printf("\n");
287: #endif
288: }
289: #else
290: void
291: ssp_init(void)
292: {
293:
294: }
1.280 christos 295: #endif
296:
1.287 elad 297: void __secmodel_none(void);
1.296 itohy 298: __weak_alias(secmodel_start,__secmodel_none);
1.287 elad 299: void
300: __secmodel_none(void)
301: {
302: return;
303: }
304:
1.61 mycroft 305: /*
306: * System startup; initialize the world, create process 0, mount root
307: * filesystem, and fork to create init and pagedaemon. Most of the
308: * hard work is done in the lower-level initialization routines including
309: * startup(), which does memory initialization and autoconfiguration.
310: */
1.81 christos 311: void
1.176 thorpej 312: main(void)
1.61 mycroft 313: {
1.267 kardel 314: struct timeval time;
1.216 thorpej 315: struct lwp *l;
1.144 thorpej 316: struct proc *p;
1.204 thorpej 317: int s, error;
1.175 jdolecek 318: #ifdef NVNODE_IMPLICIT
319: int usevnodes;
320: #endif
1.312 ad 321: CPU_INFO_ITERATOR cii;
322: struct cpu_info *ci;
1.61 mycroft 323:
1.216 thorpej 324: l = &lwp0;
1.327 matt 325: #ifndef LWP0_CPU_INFO
1.216 thorpej 326: l->l_cpu = curcpu();
1.327 matt 327: #endif
1.233 junyoung 328:
1.317 ad 329: /*
1.61 mycroft 330: * Attempt to find console and initialize
331: * in case of early panic or other messages.
332: */
333: consinit();
334:
1.321 ad 335: kernel_lock_init();
1.364 pooka 336: once_init();
1.179 thorpej 337:
1.114 mrg 338: uvm_init();
1.127 thorpej 339:
1.377 he 340: #if ((NKSYMS > 0) || (NDDB > 0) || (NMODULAR > 0))
1.376 martin 341: ksyms_init();
1.377 he 342: #endif
1.379 ! pooka 343: kprintf_init();
1.376 martin 344:
1.338 yamt 345: percpu_init();
346:
1.347 ad 347: /* Initialize lock caches. */
348: mutex_obj_init();
349:
1.307 ad 350: /* Initialize the extent manager. */
351: extent_init();
352:
1.145 thorpej 353: /* Do machine-dependent initialization. */
354: cpu_startup();
1.162 thorpej 355:
1.378 pooka 356: /* Initialize the sysctl subsystem. */
357: sysctl_init();
358:
1.307 ad 359: /* Initialize callouts, part 1. */
1.166 enami 360: callout_startup();
1.145 thorpej 361:
1.291 elad 362: /*
363: * Initialize the kernel authorization subsystem and start the
364: * default security model, if any. We need to do this early
365: * enough so that subsystems relying on any of the aforementioned
366: * can work properly. Since the security model may dictate the
367: * credential inheritance policy, it is needed at least before
368: * any process is created, specifically proc0.
369: */
1.289 elad 370: kauth_init();
1.290 elad 371: secmodel_start();
372:
1.228 pk 373: /* Initialize the buffer cache */
374: bufinit();
375:
1.128 thorpej 376: /* Initialize sockets. */
377: soinit();
1.127 thorpej 378:
1.156 thorpej 379: /*
1.212 thorpej 380: * The following things must be done before autoconfiguration.
1.156 thorpej 381: */
1.212 thorpej 382: evcnt_init(); /* initialize event counters */
1.106 explorer 383: #if NRND > 0
1.363 reinoud 384: rnd_init(); /* initialize random number generator */
1.106 explorer 385: #endif
1.176 thorpej 386:
1.236 simonb 387: /* Initialize process and pgrp structures. */
1.63 mycroft 388: procinit();
1.279 thorpej 389: lwpinit();
1.210 thorpej 390:
1.251 junyoung 391: /* Initialize signal-related data structures. */
392: signal_init();
1.61 mycroft 393:
1.333 ad 394: /* Initialize resource management. */
395: resource_init();
396:
1.251 junyoung 397: /* Create process 0 (the swapper). */
398: proc0_init();
1.61 mycroft 399:
1.307 ad 400: /* Initialize the UID hash table. */
401: uid_init();
402:
403: /* Charge root for one process. */
1.61 mycroft 404: (void)chgproccnt(0, 1);
405:
1.330 ad 406: /* Initialize timekeeping. */
407: time_init();
408:
1.292 ad 409: /* Initialize the run queues, turnstiles and sleep queues. */
1.312 ad 410: mutex_init(&cpu_lock, MUTEX_DEFAULT, IPL_NONE);
1.302 yamt 411: sched_rqinit();
1.292 ad 412: turnstile_init();
413: sleeptab_init(&sleeptab);
414:
1.339 rmind 415: /* Initialize processor-sets */
416: psets_init();
417:
1.302 yamt 418: /* MI initialization of the boot cpu */
419: error = mi_cpu_attach(curcpu());
420: KASSERT(error == 0);
421:
1.350 ad 422: /* Initialize timekeeping, part 2. */
423: time_init2();
424:
1.338 yamt 425: /*
426: * Initialize mbuf's. Do this now because we might attempt to
427: * allocate mbufs or mbuf clusters during autoconfiguration.
428: */
429: mbinit();
430:
1.284 ad 431: /* Initialize I/O statistics. */
432: iostat_init();
433:
1.325 ad 434: /* Initialize the log device. */
435: loginit();
436:
1.355 ad 437: /* Start module system. */
438: module_init();
439:
1.61 mycroft 440: /* Initialize the file systems. */
1.194 matt 441: #ifdef NVNODE_IMPLICIT
442: /*
443: * If maximum number of vnodes in namei vnode cache is not explicitly
444: * defined in kernel config, adjust the number such as we use roughly
1.359 ad 445: * 10% of memory for vnodes and associated data structures in the
446: * assumed worst case. Do not provide fewer than NVNODE vnodes.
1.194 matt 447: */
1.346 yamt 448: usevnodes =
1.359 ad 449: calc_cache_size(kernel_map, 10, VNODE_VA_MAXPCT) / VNODE_COST;
1.205 sommerfe 450: if (usevnodes > desiredvnodes)
1.194 matt 451: desiredvnodes = usevnodes;
452: #endif
1.61 mycroft 453: vfsinit();
1.357 ad 454: lf_init();
1.61 mycroft 455:
1.288 hannken 456: /* Initialize fstrans. */
457: fstrans_init();
1.267 kardel 458:
1.319 ad 459: /* Initialize the file descriptor system. */
1.343 ad 460: fd_sys_init();
1.319 ad 461:
1.375 pooka 462: /* Initialize cwd structures */
463: cwd_sys_init();
464:
1.344 ad 465: /* Initialize kqueue. */
1.343 ad 466: kqueue_init();
1.307 ad 467:
1.314 rmind 468: /* Initialize message queues. */
469: mqueue_sysinit();
470:
1.313 xtraeme 471: /* Initialize the system monitor subsystems. */
1.310 xtraeme 472: #if NSYSMON_TASKQ > 0
473: sysmon_task_queue_preinit();
474: #endif
475:
1.305 xtraeme 476: #if NSYSMON_ENVSYS > 0
477: sysmon_envsys_init();
478: #endif
1.310 xtraeme 479:
1.305 xtraeme 480: #if NSYSMON_POWER > 0
481: sysmon_power_init();
482: #endif
1.313 xtraeme 483:
484: #if NSYSMON_WDOG > 0
485: sysmon_wdog_init();
486: #endif
487:
1.268 kardel 488: inittimecounter();
1.267 kardel 489: ntp_init();
490:
1.307 ad 491: /* Initialize the device switch tables. */
492: devsw_init();
493:
1.326 ad 494: /* Initialize tty subsystem. */
495: tty_init();
496: ttyldisc_init();
497:
1.336 ad 498: /* Initialize the buffer cache, part 2. */
499: bufinit2();
500:
1.309 ad 501: /* Initialize the disk wedge subsystem. */
502: dkwedge_init();
503:
1.360 yamt 504: /* Initialize interfaces. */
505: ifinit1();
506:
1.156 thorpej 507: /* Configure the system hardware. This will enable interrupts. */
508: configure();
1.61 mycroft 509:
1.185 chs 510: ubc_init(); /* must be after autoconfig */
511:
1.61 mycroft 512: #ifdef SYSVSHM
513: /* Initialize System V style shared memory. */
514: shminit();
515: #endif
516:
517: #ifdef SYSVSEM
518: /* Initialize System V style semaphores. */
519: seminit();
520: #endif
521:
522: #ifdef SYSVMSG
523: /* Initialize System V style message queues. */
524: msginit();
525: #endif
526:
1.273 elad 527: #if NVERIEXEC > 0
1.283 elad 528: /*
529: * Initialise the Veriexec subsystem.
530: */
531: veriexec_init();
1.273 elad 532: #endif /* NVERIEXEC > 0 */
1.251 junyoung 533:
1.334 elad 534: #if defined(PAX_MPROTECT) || defined(PAX_SEGVGUARD) || defined(PAX_ASLR)
1.281 elad 535: pax_init();
1.334 elad 536: #endif /* PAX_MPROTECT || PAX_SEGVGUARD || PAX_ASLR */
1.281 elad 537:
1.223 jonathan 538: #ifdef FAST_IPSEC
539: /* Attach network crypto subsystem */
540: ipsec_attach();
541: #endif
1.61 mycroft 542:
543: /*
544: * Initialize protocols. Block reception of incoming packets
545: * until everything is ready.
546: */
1.190 thorpej 547: s = splnet();
1.61 mycroft 548: ifinit();
549: domaininit();
1.200 itojun 550: if_attachdomain();
1.61 mycroft 551: splx(s);
552:
553: #ifdef GPROF
554: /* Initialize kernel profiling. */
555: kmstartup();
556: #endif
1.164 enami 557:
1.351 sborrill 558: /* Initialize system accounting. */
1.164 enami 559: acct_init();
1.61 mycroft 560:
1.301 ad 561: #ifndef PIPE_SOCKETPAIR
1.300 ad 562: /* Initialize pipes. */
563: pipe_init();
1.301 ad 564: #endif
1.300 ad 565:
1.292 ad 566: #ifdef KTRACE
567: /* Initialize ktrace. */
568: ktrinit();
569: #endif
570:
1.307 ad 571: /* Initialize the UUID system calls. */
572: uuid_init();
573:
1.361 simonb 574: #ifdef WAPBL
575: /* Initialize write-ahead physical block logging. */
576: wapbl_init();
577: #endif
578:
1.163 thorpej 579: /*
580: * Create process 1 (init(8)). We do this now, as Unix has
581: * historically had init be process 1, and changing this would
582: * probably upset a lot of people.
583: *
584: * Note that process 1 won't immediately exec init(8), but will
585: * wait for us to inform it that the root file system has been
586: * mounted.
587: */
1.216 thorpej 588: if (fork1(l, 0, SIGCHLD, NULL, 0, start_init, NULL, NULL, &initproc))
1.163 thorpej 589: panic("fork init");
590:
591: /*
1.340 ad 592: * Load any remaining builtin modules, and hand back temporary
593: * storage to the VM system.
594: */
595: module_init_class(MODULE_CLASS_ANY);
596:
597: /*
1.208 thorpej 598: * Finalize configuration now that all real devices have been
599: * found. This needs to be done before the root device is
600: * selected, since finalization may create the root device.
601: */
602: config_finalize();
1.163 thorpej 603:
604: /*
605: * Now that autoconfiguration has completed, we can determine
606: * the root and dump devices.
607: */
1.98 gwr 608: cpu_rootconf();
1.101 thorpej 609: cpu_dumpconf();
1.61 mycroft 610:
611: /* Mount the root file system. */
1.95 thorpej 612: do {
613: domountroothook();
614: if ((error = vfs_mountroot())) {
1.97 thorpej 615: printf("cannot mount root, error = %d\n", error);
1.95 thorpej 616: boothowto |= RB_ASKNAME;
617: setroot(root_device,
1.152 thorpej 618: (rootdev != NODEV) ? DISKPART(rootdev) : 0);
1.95 thorpej 619: }
620: } while (error != 0);
621: mountroothook_destroy();
622:
1.239 pk 623: /*
624: * Initialise the time-of-day clock, passing the time recorded
625: * in the root filesystem (if any) for use by systems that
626: * don't have a non-volatile time-of-day device.
627: */
628: inittodr(rootfstime);
629:
1.206 matt 630: CIRCLEQ_FIRST(&mountlist)->mnt_flag |= MNT_ROOTFS;
631: CIRCLEQ_FIRST(&mountlist)->mnt_op->vfs_refcount++;
1.61 mycroft 632:
1.111 thorpej 633: /*
634: * Get the vnode for '/'. Set filedesc0.fd_fd.fd_cdir to
635: * reference it.
636: */
1.243 mycroft 637: error = VFS_ROOT(CIRCLEQ_FIRST(&mountlist), &rootvnode);
638: if (error)
639: panic("cannot find root vnode, error=%d", error);
1.148 thorpej 640: cwdi0.cwdi_cdir = rootvnode;
641: VREF(cwdi0.cwdi_cdir);
1.118 fvdl 642: VOP_UNLOCK(rootvnode, 0);
1.148 thorpej 643: cwdi0.cwdi_rdir = NULL;
1.163 thorpej 644:
645: /*
646: * Now that root is mounted, we can fixup initproc's CWD
647: * info. All other processes are kthreads, which merely
648: * share proc0's CWD info.
649: */
650: initproc->p_cwdi->cwdi_cdir = rootvnode;
651: VREF(initproc->p_cwdi->cwdi_cdir);
652: initproc->p_cwdi->cwdi_rdir = NULL;
1.61 mycroft 653:
654: /*
655: * Now can look at time, having had a chance to verify the time
1.292 ad 656: * from the file system. Reset l->l_rtime as it may have been
1.61 mycroft 657: * munched in mi_switch() after the time got set.
658: */
1.267 kardel 659: getmicrotime(&time);
660: boottime = time;
1.352 ad 661: mutex_enter(proc_lock);
1.225 jdolecek 662: LIST_FOREACH(p, &allproc, p_list) {
1.295 pavel 663: KASSERT((p->p_flag & PK_MARKER) == 0);
1.353 ad 664: mutex_enter(p->p_lock);
1.267 kardel 665: p->p_stats->p_start = time;
1.225 jdolecek 666: LIST_FOREACH(l, &p->p_lwps, l_sibling) {
1.292 ad 667: lwp_lock(l);
1.332 yamt 668: memset(&l->l_rtime, 0, sizeof(l->l_rtime));
1.292 ad 669: lwp_unlock(l);
1.225 jdolecek 670: }
1.353 ad 671: mutex_exit(p->p_lock);
1.163 thorpej 672: }
1.352 ad 673: mutex_exit(proc_lock);
1.332 yamt 674: binuptime(&curlwp->l_stime);
1.61 mycroft 675:
1.312 ad 676: for (CPU_INFO_FOREACH(cii, ci)) {
677: ci->ci_schedstate.spc_lastmod = time_second;
678: }
679:
1.163 thorpej 680: /* Create the pageout daemon kernel thread. */
681: uvm_swap_init();
1.336 ad 682: if (kthread_create(PRI_PGDAEMON, KTHREAD_MPSAFE, NULL, uvm_pageout,
1.307 ad 683: NULL, NULL, "pgdaemon"))
1.135 thorpej 684: panic("fork pagedaemon");
1.61 mycroft 685:
1.163 thorpej 686: /* Create the filesystem syncer kernel thread. */
1.336 ad 687: if (kthread_create(PRI_IOFLUSH, KTHREAD_MPSAFE, NULL, sched_sync,
688: NULL, NULL, "ioflush"))
1.159 fvdl 689: panic("fork syncer");
1.185 chs 690:
691: /* Create the aiodone daemon kernel thread. */
1.286 yamt 692: if (workqueue_create(&uvm.aiodone_queue, "aiodoned",
1.336 ad 693: uvm_aiodone_worker, NULL, PRI_VM, IPL_NONE, WQ_MPSAFE))
1.185 chs 694: panic("fork aiodoned");
1.137 thorpej 695:
1.304 yamt 696: vmem_rehash_start();
697:
1.186 jdolecek 698: /* Initialize exec structures */
699: exec_init(1);
1.192 jdolecek 700:
1.163 thorpej 701: /*
702: * Okay, now we can let init(8) exec! It's off to userland!
703: */
1.356 ad 704: mutex_enter(proc_lock);
1.163 thorpej 705: start_init_exec = 1;
1.356 ad 706: cv_broadcast(&lbolt);
707: mutex_exit(proc_lock);
1.163 thorpej 708:
1.61 mycroft 709: /* The scheduler is an infinite loop. */
1.114 mrg 710: uvm_scheduler();
1.61 mycroft 711: /* NOTREACHED */
712: }
713:
1.93 mouse 714: static void
1.260 christos 715: check_console(struct lwp *l)
1.93 mouse 716: {
717: struct nameidata nd;
718: int error;
719:
1.331 pooka 720: NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/dev/console");
1.93 mouse 721: error = namei(&nd);
1.96 cgd 722: if (error == 0)
723: vrele(nd.ni_vp);
724: else if (error == ENOENT)
725: printf("warning: no /dev/console\n");
1.93 mouse 726: else
1.96 cgd 727: printf("warning: lookup /dev/console: error %d\n", error);
1.93 mouse 728: }
729:
1.61 mycroft 730: /*
731: * List of paths to try when searching for "init".
732: */
1.327 matt 733: static const char * const initpaths[] = {
1.61 mycroft 734: "/sbin/init",
735: "/sbin/oinit",
736: "/sbin/init.bak",
737: NULL,
738: };
739:
740: /*
741: * Start the initial user process; try exec'ing each pathname in "initpaths".
742: * The program is invoked with one argument containing the boot flags.
743: */
744: static void
1.176 thorpej 745: start_init(void *arg)
1.61 mycroft 746: {
1.216 thorpej 747: struct lwp *l = arg;
748: struct proc *p = l->l_proc;
1.130 eeh 749: vaddr_t addr;
1.78 mycroft 750: struct sys_execve_args /* {
1.108 mycroft 751: syscallarg(const char *) path;
1.92 cgd 752: syscallarg(char * const *) argp;
753: syscallarg(char * const *) envp;
1.68 cgd 754: } */ args;
755: int options, i, error;
756: register_t retval[2];
1.66 mycroft 757: char flags[4], *flagsp;
1.202 lukem 758: const char *path, *slash;
1.176 thorpej 759: char *ucp, **uap, *arg0, *arg1 = NULL;
1.202 lukem 760: char ipath[129];
761: int ipx, len;
1.61 mycroft 762:
1.76 cgd 763: /*
764: * Now in process 1.
765: */
1.146 gwr 766: strncpy(p->p_comm, "init", MAXCOMLEN);
1.163 thorpej 767:
768: /*
769: * Wait for main() to tell us that it's safe to exec.
770: */
1.356 ad 771: mutex_enter(proc_lock);
1.163 thorpej 772: while (start_init_exec == 0)
1.356 ad 773: cv_wait(&lbolt, proc_lock);
774: mutex_exit(proc_lock);
1.93 mouse 775:
776: /*
777: * This is not the right way to do this. We really should
778: * hand-craft a descriptor onto /dev/console to hand to init,
779: * but that's a _lot_ more work, and the benefit from this easy
780: * hack makes up for the "good is the enemy of the best" effect.
781: */
1.260 christos 782: check_console(l);
1.61 mycroft 783:
784: /*
785: * Need just enough stack to hold the faked-up "execve()" arguments.
786: */
1.211 chs 787: addr = (vaddr_t)STACK_ALLOC(USRSTACK, PAGE_SIZE);
1.205 sommerfe 788: if (uvm_map(&p->p_vmspace->vm_map, &addr, PAGE_SIZE,
1.181 thorpej 789: NULL, UVM_UNKNOWN_OFFSET, 0,
1.114 mrg 790: UVM_MAPFLAG(UVM_PROT_ALL, UVM_PROT_ALL, UVM_INH_COPY,
791: UVM_ADV_NORMAL,
1.189 chs 792: UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW)) != 0)
1.114 mrg 793: panic("init: couldn't allocate argument space");
1.297 christos 794: p->p_vmspace->vm_maxsaddr = (void *)STACK_MAX(addr, PAGE_SIZE);
1.61 mycroft 795:
1.202 lukem 796: ipx = 0;
797: while (1) {
798: if (boothowto & RB_ASKNAME) {
799: printf("init path");
800: if (initpaths[ipx])
801: printf(" (default %s)", initpaths[ipx]);
802: printf(": ");
803: len = cngetsn(ipath, sizeof(ipath)-1);
1.371 tsutsui 804: if (len == 4 && strcmp(ipath, "halt") == 0) {
1.370 tsutsui 805: cpu_reboot(RB_HALT, NULL);
806: } else if (len == 6 && strcmp(ipath, "reboot") == 0) {
807: cpu_reboot(0, NULL);
808: #if defined(DDB)
809: } else if (len == 3 && strcmp(ipath, "ddb") == 0) {
810: console_debugger();
811: continue;
812: #endif
1.371 tsutsui 813: } else if (len > 0 && ipath[0] == '/') {
1.202 lukem 814: ipath[len] = '\0';
815: path = ipath;
1.371 tsutsui 816: } else if (len == 0 && initpaths[ipx] != NULL) {
817: path = initpaths[ipx++];
818: } else {
819: printf("use absolute path, ");
820: #if defined(DDB)
821: printf("\"ddb\", ");
822: #endif
823: printf("\"halt\", or \"reboot\"\n");
824: continue;
1.202 lukem 825: }
826: } else {
1.370 tsutsui 827: if ((path = initpaths[ipx++]) == NULL) {
828: ipx = 0;
829: boothowto |= RB_ASKNAME;
830: continue;
831: }
1.202 lukem 832: }
833:
1.211 chs 834: ucp = (char *)USRSTACK;
1.64 mycroft 835:
1.61 mycroft 836: /*
1.64 mycroft 837: * Construct the boot flag argument.
1.61 mycroft 838: */
1.66 mycroft 839: flagsp = flags;
840: *flagsp++ = '-';
1.61 mycroft 841: options = 0;
1.66 mycroft 842:
1.61 mycroft 843: if (boothowto & RB_SINGLE) {
1.64 mycroft 844: *flagsp++ = 's';
1.61 mycroft 845: options = 1;
846: }
847: #ifdef notyet
848: if (boothowto & RB_FASTBOOT) {
1.64 mycroft 849: *flagsp++ = 'f';
1.61 mycroft 850: options = 1;
851: }
852: #endif
1.64 mycroft 853:
854: /*
855: * Move out the flags (arg 1), if necessary.
856: */
857: if (options != 0) {
858: *flagsp++ = '\0';
859: i = flagsp - flags;
860: #ifdef DEBUG
1.90 christos 861: printf("init: copying out flags `%s' %d\n", flags, i);
1.64 mycroft 862: #endif
1.211 chs 863: arg1 = STACK_ALLOC(ucp, i);
864: ucp = STACK_MAX(arg1, i);
1.297 christos 865: (void)copyout((void *)flags, arg1, i);
1.64 mycroft 866: }
1.61 mycroft 867:
868: /*
869: * Move out the file name (also arg 0).
870: */
1.64 mycroft 871: i = strlen(path) + 1;
872: #ifdef DEBUG
1.90 christos 873: printf("init: copying out path `%s' %d\n", path, i);
1.202 lukem 874: #else
1.203 lukem 875: if (boothowto & RB_ASKNAME || path != initpaths[0])
1.202 lukem 876: printf("init: trying %s\n", path);
1.64 mycroft 877: #endif
1.211 chs 878: arg0 = STACK_ALLOC(ucp, i);
879: ucp = STACK_MAX(arg0, i);
1.247 christos 880: (void)copyout(path, arg0, i);
1.61 mycroft 881:
882: /*
883: * Move out the arg pointers.
884: */
1.297 christos 885: ucp = (void *)STACK_ALIGN(ucp, ALIGNBYTES);
1.211 chs 886: uap = (char **)STACK_ALLOC(ucp, sizeof(char *) * 3);
887: SCARG(&args, path) = arg0;
888: SCARG(&args, argp) = uap;
889: SCARG(&args, envp) = NULL;
1.142 mycroft 890: slash = strrchr(path, '/');
891: if (slash)
1.297 christos 892: (void)suword((void *)uap++,
1.142 mycroft 893: (long)arg0 + (slash + 1 - path));
894: else
1.297 christos 895: (void)suword((void *)uap++, (long)arg0);
1.211 chs 896: if (options != 0)
1.297 christos 897: (void)suword((void *)uap++, (long)arg1);
898: (void)suword((void *)uap++, 0); /* terminator */
1.61 mycroft 899:
900: /*
901: * Now try to exec the program. If can't for any reason
902: * other than it doesn't exist, complain.
903: */
1.260 christos 904: error = sys_execve(l, &args, retval);
1.179 thorpej 905: if (error == 0 || error == EJUSTRETURN) {
1.292 ad 906: KERNEL_UNLOCK_LAST(l);
1.61 mycroft 907: return;
1.179 thorpej 908: }
1.202 lukem 909: printf("exec %s: error %d\n", path, error);
1.61 mycroft 910: }
1.90 christos 911: printf("init: not found\n");
1.61 mycroft 912: panic("no init");
913: }
1.345 yamt 914:
915: /*
916: * calculate cache size from physmem and vm_map size.
917: */
918: vaddr_t
1.346 yamt 919: calc_cache_size(struct vm_map *map, int pct, int va_pct)
1.345 yamt 920: {
921: paddr_t t;
922:
923: /* XXX should consider competing cache if any */
924: /* XXX should consider submaps */
1.346 yamt 925: t = (uintmax_t)physmem * pct / 100 * PAGE_SIZE;
926: if (map != NULL) {
927: vsize_t vsize;
928:
929: vsize = vm_map_max(map) - vm_map_min(map);
930: vsize = (uintmax_t)vsize * va_pct / 100;
931: if (t > vsize) {
932: t = vsize;
933: }
1.345 yamt 934: }
935: return t;
936: }
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