bsd/kern/bsd_init.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  * (c) UNIX System Laboratories, Inc.
  34  * All or some portions of this file are derived from material licensed
  35  * to the University of California by American Telephone and Telegraph
  36  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  37  * the permission of UNIX System Laboratories, Inc.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. All advertising materials mentioning features or use of this software
  48  *    must display the following acknowledgement:
  49  *      This product includes software developed by the University of
  50  *      California, Berkeley and its contributors.
  51  * 4. Neither the name of the University nor the names of its contributors
  52  *    may be used to endorse or promote products derived from this software
  53  *    without specific prior written permission.
  54  *
  55  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  56  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  57  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  58  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  59  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  60  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  61  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  62  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  63  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  64  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  65  * SUCH DAMAGE.
  66  *
  67  *      @(#)init_main.c 8.16 (Berkeley) 5/14/95
  68  */
  69
  70 /*
  71  *
  72  * Mach Operating System
  73  * Copyright (c) 1987 Carnegie-Mellon University
  74  * All rights reserved.  The CMU software License Agreement specifies
  75  * the terms and conditions for use and redistribution.
  76  */
  77
  78 #include <sys/param.h>
  79 #include <sys/filedesc.h>
  80 #include <sys/kernel.h>
  81 #include <sys/mount_internal.h>
  82 #include <sys/proc_internal.h>
  83 #include <sys/kauth.h>
  84 #include <sys/systm.h>
  85 #include <sys/vnode_internal.h>
  86 #include <sys/conf.h>
  87 #include <sys/buf_internal.h>
  88 #include <sys/clist.h>
  89 #include <sys/user.h>
  90 #include <sys/time.h>
  91 #include <sys/systm.h>
  92 #include <sys/mman.h>
  93
  94 #include <bsm/audit_kernel.h>
  95
  96 #include <sys/malloc.h>
  97 #include <sys/dkstat.h>
  98
  99 #include <kern/startup.h>
 100 #include <kern/thread.h>
 101 #include <kern/task.h>
 102 #include <kern/ast.h>
 103
 104 #include <mach/vm_param.h>
 105
 106 #include <vm/vm_map.h>
 107 #include <vm/vm_kern.h>
 108
 109 #include <sys/ux_exception.h>   /* for ux_exception_port */
 110
 111 #include <sys/reboot.h>
 112 #include <mach/exception_types.h>
 113 #include <dev/busvar.h>                 /* for pseudo_inits */
 114 #include <sys/kdebug.h>
 115
 116 #include <mach/mach_types.h>
 117 #include <mach/vm_prot.h>
 118 #include <mach/semaphore.h>
 119 #include <mach/sync_policy.h>
 120 #include <kern/clock.h>
 121 #include <mach/kern_return.h>
 122
 123 #include <mach/shared_memory_server.h>
 124 #include <vm/vm_shared_memory_server.h>
 125
 126 #include <net/init.h>
 127
 128 extern int app_profile;         /* on/off switch for pre-heat cache */
 129
 130 char    copyright[] =
 131 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
 132 "The Regents of the University of California. "
 133 "All rights reserved.\n\n";
 134
 135 extern void     ux_handler();
 136
 137 /* Components of the first process -- never freed. */
 138 struct  proc proc0;
 139 struct  session session0;
 140 struct  pgrp pgrp0;
 141 struct  filedesc filedesc0;
 142 struct  plimit limit0;
 143 struct  pstats pstats0;
 144 struct  sigacts sigacts0;
 145 struct  proc *kernproc, *initproc;
 146
 147 long tk_cancc;
 148 long tk_nin;
 149 long tk_nout;
 150 long tk_rawcc;
 151
 152 int lock_trace = 0;
 153 /* Global variables to make pstat happy. We do swapping differently */
 154 int nswdev, nswap;
 155 int nswapmap;
 156 void *swapmap;
 157 struct swdevt swdevt[1];
 158
 159 dev_t   rootdev;                /* device of the root */
 160 dev_t   dumpdev;                /* device to take dumps on */
 161 long    dumplo;                 /* offset into dumpdev */
 162 long    hostid;
 163 char    hostname[MAXHOSTNAMELEN];
 164 int             hostnamelen;
 165 char    domainname[MAXDOMNAMELEN];
 166 int             domainnamelen;
 167 char    classichandler[32] = {0};
 168 uint32_t        classichandler_fsid = -1L;
 169 long    classichandler_fileid = -1L;
 170
 171 char rootdevice[16];    /* hfs device names have at least 9 chars */
 172
 173 #ifdef  KMEMSTATS
 174 struct  kmemstats kmemstats[M_LAST];
 175 #endif
 176
 177 int     lbolt;                          /* awoken once a second */
 178 struct  vnode *rootvp;
 179 int boothowto = RB_DEBUG;
 180
 181 #define BSD_PAGABLE_MAP_SIZE    (16 * 512 * 1024)
 182 vm_map_t        bsd_pageable_map;
 183 vm_map_t        mb_map;
 184 semaphore_t execve_semaphore;
 185
 186 int     cmask = CMASK;
 187
 188 int parse_bsd_args(void);
 189 extern int bsd_hardclockinit;
 190 extern task_t bsd_init_task;
 191 extern char    init_task_failure_data[];
 192 extern void time_zone_slock_init(void);
 193 static void process_name(char *, struct proc *);
 194
 195 static void setconf(void);
 196
 197 funnel_t *kernel_flock;
 198
 199 extern void sysv_shm_lock_init(void);
 200 extern void sysv_sem_lock_init(void);
 201 extern void sysv_msg_lock_init(void);
 202 extern void pshm_lock_init();
 203 extern void psem_lock_init();
 204
 205 /*
 206  * Initialization code.
 207  * Called from cold start routine as
 208  * soon as a stack and segmentation
 209  * have been established.
 210  * Functions:
 211  *      turn on clock
 212  *      hand craft 0th process
 213  *      call all initialization routines
 214  *  hand craft 1st user process
 215  */
 216
 217 /*
 218  *      Sets the name for the given task.
 219  */
 220 static void
 221 process_name(s, p)
 222         char            *s;
 223         struct proc *p;
 224 {
 225         int             length = strlen(s);
 226
 227         bcopy(s, p->p_comm,
 228                 length >= sizeof(p->p_comm) ? sizeof(p->p_comm) :
 229                         length + 1);
 230 }
 231
 232 /* To allow these values to be patched, they're globals here */
 233 #include <machine/vmparam.h>
 234 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ };
 235 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 236 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 237
 238 extern thread_t cloneproc(struct proc *, int);
 239 extern int      (*mountroot)(void);
 240 extern int      netboot_mountroot();    /* netboot.c */
 241 extern int      netboot_setup(struct proc * p);
 242
 243 lck_grp_t * proc_lck_grp;
 244 lck_grp_attr_t * proc_lck_grp_attr;
 245 lck_attr_t * proc_lck_attr;
 246
 247 /* hook called after root is mounted XXX temporary hack */
 248 void (*mountroot_post_hook)(void);
 249
 250 /*
 251  * This function is called very early on in the Mach startup, from the
 252  * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 253  * in the context of the current (startup) task using a call to the
 254  * function kernel_thread_create() to jump into start_kernel_threads().
 255  * Internally, kernel_thread_create() calls thread_create_internal(),
 256  * which calls uthread_alloc().  The function of uthread_alloc() is
 257  * normally to allocate a uthread structure, and fill out the uu_sigmask,
 258  * uu_act, and uu_ucred fields.  It skips filling these out in the case
 259  * of the "task" being "kernel_task", because the order of operation is
 260  * inverted.  To account for that, we need to manually fill in at least
 261  * the uu_cred field so that the uthread structure can be used like any
 262  * other.
 263  */
 264 void
 265 bsd_init()
 266 {
 267         register struct proc *p;
 268         struct uthread *ut;
 269         extern kauth_cred_t rootcred;
 270         register int i;
 271         int s;
 272         thread_t        th;
 273         struct vfs_context context;
 274         void            lightning_bolt(void );
 275         kern_return_t   ret;
 276         boolean_t funnel_state;
 277         struct ucred temp_cred;
 278         extern void file_lock_init(void);
 279
 280         kernel_flock = funnel_alloc(KERNEL_FUNNEL);
 281         if (kernel_flock == (funnel_t *)0 ) {
 282                 panic("bsd_init: Failed to allocate kernel funnel");
 283         }
 284
 285         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 286
 287         printf(copyright);
 288
 289         kmeminit();
 290
 291         parse_bsd_args();
 292
 293         /* Initialize the uthread zone */
 294         //uthread_zone_init();  /* XXX redundant: previous uthread_alloc() */
 295
 296         /* Initialize kauth subsystem before instancing the first credential */
 297         kauth_init();
 298
 299         /* Initialize process and pgrp structures. */
 300         procinit();
 301
 302         kernproc = &proc0;
 303
 304         p = kernproc;
 305
 306         /* kernel_task->proc = kernproc; */
 307         set_bsdtask_info(kernel_task,(void *)p);
 308         p->p_pid = 0;
 309
 310         /* give kernproc a name */
 311         process_name("kernel_task", p);
 312
 313
 314         /* allocate proc lock group attribute and group */
 315         proc_lck_grp_attr= lck_grp_attr_alloc_init();
 316         lck_grp_attr_setstat(proc_lck_grp_attr);
 317
 318         proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
 319
 320
 321         /* Allocate proc lock attribute */
 322         proc_lck_attr = lck_attr_alloc_init();
 323         //lck_attr_setdebug(proc_lck_attr);
 324
 325         lck_mtx_init(&p->p_mlock, proc_lck_grp, proc_lck_attr);
 326         lck_mtx_init(&p->p_fdmlock, proc_lck_grp, proc_lck_attr);
 327
 328         if (current_task() != kernel_task)
 329                 printf("bsd_init: We have a problem, "
 330                                 "current task is not kernel task\n");
 331
 332         ut = (uthread_t)get_bsdthread_info(current_thread());
 333
 334         /*
 335          * Create process 0.
 336          */
 337         LIST_INSERT_HEAD(&allproc, p, p_list);
 338         p->p_pgrp = &pgrp0;
 339         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 340         LIST_INIT(&pgrp0.pg_members);
 341         LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
 342
 343         pgrp0.pg_session = &session0;
 344         session0.s_count = 1;
 345         session0.s_leader = p;
 346
 347         p->task = kernel_task;
 348
 349         p->p_stat = SRUN;
 350         p->p_flag = P_SYSTEM;
 351         p->p_nice = NZERO;
 352         p->p_pptr = p;
 353         lockinit(&p->signal_lock, PVM, "signal", 0, 0);
 354         TAILQ_INIT(&p->p_uthlist);
 355         p->sigwait = FALSE;
 356         p->sigwait_thread = THREAD_NULL;
 357         p->exit_thread = THREAD_NULL;
 358
 359         /*
 360          * Create credential.  This also Initializes the audit information.
 361          * XXX It is not clear what the initial values should be for audit ID,
 362          * XXX session ID, etc..
 363          */
 364         bzero(&temp_cred, sizeof(temp_cred));
 365         temp_cred.cr_ngroups = 1;
 366
 367         p->p_ucred = kauth_cred_create(&temp_cred);
 368
 369         /* give the (already exisiting) initial thread a reference on it */
 370         kauth_cred_ref(p->p_ucred);
 371         ut->uu_ucred = p->p_ucred;
 372
 373         TAILQ_INIT(&p->aio_activeq);
 374         TAILQ_INIT(&p->aio_doneq);
 375         p->aio_active_count = 0;
 376         p->aio_done_count = 0;
 377
 378         file_lock_init();
 379
 380         /* Create the file descriptor table. */
 381         filedesc0.fd_refcnt = 1+1;      /* +1 so shutdown will not _FREE_ZONE */
 382         p->p_fd = &filedesc0;
 383         filedesc0.fd_cmask = cmask;
 384         filedesc0.fd_knlistsize = -1;
 385         filedesc0.fd_knlist = NULL;
 386         filedesc0.fd_knhash = NULL;
 387         filedesc0.fd_knhashmask = 0;
 388
 389         /* Create the limits structures. */
 390         p->p_limit = &limit0;
 391         for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
 392                 limit0.pl_rlimit[i].rlim_cur =
 393                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 394         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 395         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC;
 396         limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 397         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 398         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 399         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 400         limit0.p_refcnt = 1;
 401
 402         p->p_stats = &pstats0;
 403         p->p_sigacts = &sigacts0;
 404
 405         /*
 406          * Charge root for two  processes: init and mach_init.
 407          */
 408         (void)chgproccnt(0, 1);
 409
 410         /*
 411          *      Allocate a kernel submap for pageable memory
 412          *      for temporary copying (execve()).
 413          */
 414         {
 415                 vm_offset_t     min;
 416
 417                 ret = kmem_suballoc(kernel_map,
 418                                 &min,
 419                                 (vm_size_t)BSD_PAGABLE_MAP_SIZE,
 420                                 TRUE,
 421                                 VM_FLAGS_ANYWHERE,
 422                                 &bsd_pageable_map);
 423                 if (ret != KERN_SUCCESS)
 424                         panic("bsd_init: Failed to allocate bsd pageable map");
 425         }
 426
 427         /*
 428          * Initialize buffers and hash links for buffers
 429          *
 430          * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
 431          *              happen after a credential has been associated with
 432          *              the kernel task.
 433          */
 434         bsd_bufferinit();
 435
 436         /* Initialize the execve() semaphore */
 437         ret = semaphore_create(kernel_task, &execve_semaphore,
 438                         SYNC_POLICY_FIFO, (BSD_PAGABLE_MAP_SIZE / NCARGS));
 439         if (ret != KERN_SUCCESS)
 440                 panic("bsd_init: Failed to create execve semaphore");
 441
 442         /*
 443          * Initialize the calendar.
 444          */
 445         IOKitResetTime();
 446
 447         ubc_init();
 448
 449         /* Initialize the file systems. */
 450         vfsinit();
 451
 452         /* Initialize mbuf's. */
 453         mbinit();
 454
 455         /*
 456          * Initializes security event auditing.
 457          * XXX: Should/could this occur later?
 458          */
 459         audit_init();
 460
 461         /* Initialize kqueues */
 462         knote_init();
 463
 464         /* Initialize for async IO */
 465         aio_init();
 466
 467         /* Initialize pipes */
 468         pipeinit();
 469
 470         /* Initialize SysV shm subsystem locks; the subsystem proper is
 471          * initialized through a sysctl.
 472          */
 473         sysv_shm_lock_init();
 474         sysv_sem_lock_init();
 475         sysv_msg_lock_init();
 476         pshm_lock_init();
 477         psem_lock_init();
 478
 479         /* POSIX Shm and Sem */
 480         pshm_cache_init();
 481         psem_cache_init();
 482         time_zone_slock_init();
 483
 484         /*
 485          * Initialize protocols.  Block reception of incoming packets
 486          * until everything is ready.
 487          */
 488         sysctl_register_fixed();
 489         sysctl_mib_init();
 490         dlil_init();
 491         proto_kpi_init();
 492         socketinit();
 493         domaininit();
 494
 495         p->p_fd->fd_cdir = NULL;
 496         p->p_fd->fd_rdir = NULL;
 497
 498 #ifdef GPROF
 499         /* Initialize kernel profiling. */
 500         kmstartup();
 501 #endif
 502
 503         /* kick off timeout driven events by calling first time */
 504         thread_wakeup(&lbolt);
 505         timeout((void (*)(void *))lightning_bolt, 0, hz);
 506
 507         bsd_autoconf();
 508
 509         /*
 510          * We attach the loopback interface *way* down here to ensure
 511          * it happens after autoconf(), otherwise it becomes the
 512          * "primary" interface.
 513          */
 514 #include <loop.h>
 515 #if NLOOP > 0
 516         loopattach();                   /* XXX */
 517 #endif
 518
 519         /* Register the built-in dlil ethernet interface family */
 520         ether_family_init();
 521
 522         /* Call any kext code that wants to run just after network init */
 523         net_init_run();
 524
 525         vnode_pager_bootstrap();
 526 #if 0
 527         /* XXX Hack for early debug stop */
 528         printf("\nabout to sleep for 10 seconds\n");
 529         IOSleep( 10 * 1000 );
 530         /* Debugger("hello"); */
 531 #endif
 532
 533         inittodr(0);
 534
 535         /* Mount the root file system. */
 536         while( TRUE) {
 537                 int err;
 538
 539                 setconf();
 540                 bsd_hardclockinit = -1; /* start ticking */
 541
 542                 if (0 == (err = vfs_mountroot()))
 543                         break;
 544 #if NFSCLIENT
 545                 if (mountroot == netboot_mountroot) {
 546                         printf("cannot mount network root, errno = %d\n", err);
 547                         mountroot = NULL;
 548                         if (0 == (err = vfs_mountroot()))
 549                                 break;
 550                 }
 551 #endif
 552                 printf("cannot mount root, errno = %d\n", err);
 553                 boothowto |= RB_ASKNAME;
 554         }
 555
 556         context.vc_proc = p;
 557         context.vc_ucred = p->p_ucred;
 558         mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
 559
 560         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 561         if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
 562                 panic("bsd_init: cannot find root vnode");
 563         rootvnode->v_flag |= VROOT;
 564         (void)vnode_ref(rootvnode);
 565         (void)vnode_put(rootvnode);
 566         filedesc0.fd_cdir = rootvnode;
 567
 568 #if NFSCLIENT
 569         if (mountroot == netboot_mountroot) {
 570                 int err;
 571                 /* post mount setup */
 572                 if (err = netboot_setup(p)) {
 573                         panic("bsd_init: NetBoot could not find root, %d", err);
 574                 }
 575         }
 576 #endif
 577
 578
 579         microtime(&p->p_stats->p_start);
 580         p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0;
 581
 582 #if DEVFS
 583         {
 584             extern void devfs_kernel_mount(char * str);
 585
 586             devfs_kernel_mount("/dev");
 587         }
 588 #endif /* DEVFS */
 589
 590         /* Initialize signal state for process 0. */
 591         siginit(p);
 592
 593         bsd_utaskbootstrap();
 594
 595         /* invoke post-root-mount hook */
 596         if (mountroot_post_hook != NULL)
 597                 mountroot_post_hook();
 598
 599         (void) thread_funnel_set(kernel_flock, funnel_state);
 600 }
 601
 602 /* Called with kernel funnel held */
 603 void
 604 bsdinit_task(void)
 605 {
 606         struct proc *p = current_proc();
 607         struct uthread *ut;
 608         kern_return_t   kr;
 609         thread_t th_act;
 610         shared_region_mapping_t system_region;
 611
 612         process_name("init", p);
 613
 614         ux_handler_init();
 615
 616         th_act = current_thread();
 617         (void) host_set_exception_ports(host_priv_self(),
 618                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 619                                                          EXC_MASK_MACH_SYSCALL |
 620                                                          EXC_MASK_RPC_ALERT),
 621                                         ux_exception_port,
 622                                         EXCEPTION_DEFAULT, 0);
 623
 624         (void) task_set_exception_ports(get_threadtask(th_act),
 625                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 626                                                          EXC_MASK_MACH_SYSCALL |
 627                                                          EXC_MASK_RPC_ALERT),
 628                                         ux_exception_port,
 629                                         EXCEPTION_DEFAULT, 0);
 630
 631
 632
 633
 634         ut = (uthread_t)get_bsdthread_info(th_act);
 635         ut->uu_ar0 = (void *)get_user_regs(th_act);
 636
 637         bsd_hardclockinit = 1;  /* Start bsd hardclock */
 638         bsd_init_task = get_threadtask(th_act);
 639         init_task_failure_data[0] = 0;
 640         system_region = lookup_default_shared_region(ENV_DEFAULT_ROOT, cpu_type());
 641         if (system_region == NULL) {
 642                 shared_file_boot_time_init(ENV_DEFAULT_ROOT, cpu_type());
 643         } else {
 644                 vm_set_shared_region(get_threadtask(th_act), system_region);
 645         }
 646         load_init_program(p);
 647         /* turn on app-profiling i.e. pre-heating */
 648         app_profile = 1;
 649         lock_trace = 1;
 650 }
 651
 652 void
 653 lightning_bolt()
 654 {
 655         boolean_t       funnel_state;
 656         extern void klogwakeup(void);
 657
 658         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 659
 660         thread_wakeup(&lbolt);
 661         timeout(lightning_bolt,0,hz);
 662         klogwakeup();
 663
 664         (void) thread_funnel_set(kernel_flock, FALSE);
 665 }
 666
 667 bsd_autoconf()
 668 {
 669         extern kern_return_t IOKitBSDInit( void );
 670
 671         kminit();
 672
 673         /*
 674          * Early startup for bsd pseudodevices.
 675          */
 676         {
 677             struct pseudo_init *pi;
 678
 679             for (pi = pseudo_inits; pi->ps_func; pi++)
 680                 (*pi->ps_func) (pi->ps_count);
 681         }
 682
 683         return( IOKitBSDInit());
 684 }
 685
 686
 687 #include <sys/disklabel.h>  /* for MAXPARTITIONS */
 688
 689 static void
 690 setconf(void)
 691 {
 692         extern kern_return_t IOFindBSDRoot( char * rootName,
 693                                 dev_t * root, u_int32_t * flags );
 694         u_int32_t       flags;
 695         kern_return_t   err;
 696
 697         /*
 698          * calls into IOKit can generate networking registrations
 699          * which needs to be under network funnel. Right thing to do
 700          * here is to drop the funnel alltogether and regrab it afterwards
 701          */
 702         thread_funnel_set(kernel_flock, FALSE);
 703         err = IOFindBSDRoot( rootdevice, &rootdev, &flags );
 704         thread_funnel_set(kernel_flock, TRUE);
 705         if( err) {
 706                 printf("setconf: IOFindBSDRoot returned an error (%d);"
 707                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
 708                 rootdev = makedev( 6, 0 );
 709                 strcpy( rootdevice, "sd0a" );
 710                 flags = 0;
 711         }
 712
 713 #if NFSCLIENT
 714         if( flags & 1 ) {
 715                 /* network device */
 716                 mountroot = netboot_mountroot;
 717         } else {
 718 #endif
 719                 /* otherwise have vfs determine root filesystem */
 720                 mountroot = NULL;
 721 #if NFSCLIENT
 722         }
 723 #endif
 724
 725 }
 726
 727 bsd_utaskbootstrap()
 728 {
 729         thread_t th_act;
 730         struct uthread *ut;
 731
 732         th_act = cloneproc(kernproc, 0);
 733         initproc = pfind(1);
 734         /* Set the launch time for init */
 735         microtime(&initproc->p_stats->p_start);
 736
 737         ut = (struct uthread *)get_bsdthread_info(th_act);
 738         ut->uu_sigmask = 0;
 739         act_set_astbsd(th_act);
 740         (void) thread_resume(th_act);
 741 }
 742
 743 parse_bsd_args()
 744 {
 745         extern char init_args[];
 746         char    namep[16];
 747         extern int boothowto;
 748         extern int srv;
 749         extern int ncl;
 750
 751         int len;
 752
 753         if (PE_parse_boot_arg("-s", namep)) {
 754                 boothowto |= RB_SINGLE;
 755                 len = strlen(init_args);
 756                 if(len != 0)
 757                         strcat(init_args," -s");
 758                 else
 759                         strcat(init_args,"-s");
 760         }
 761
 762         if (PE_parse_boot_arg("-b", namep)) {
 763                 boothowto |= RB_NOBOOTRC;
 764                 len = strlen(init_args);
 765                 if(len != 0)
 766                         strcat(init_args," -b");
 767                 else
 768                         strcat(init_args,"-b");
 769         }
 770
 771         if (PE_parse_boot_arg("-F", namep)) {
 772                 len = strlen(init_args);
 773                 if(len != 0)
 774                         strcat(init_args," -F");
 775                 else
 776                         strcat(init_args,"-F");
 777         }
 778
 779         if (PE_parse_boot_arg("-v", namep)) {
 780                 len = strlen(init_args);
 781                 if(len != 0)
 782                         strcat(init_args," -v");
 783                 else
 784                         strcat(init_args,"-v");
 785         }
 786
 787         if (PE_parse_boot_arg("-x", namep)) { /* safe boot */
 788                 len = strlen(init_args);
 789                 if(len != 0)
 790                         strcat(init_args," -x");
 791                 else
 792                         strcat(init_args,"-x");
 793         }
 794
 795         if (PE_parse_boot_arg("-d", namep)) {
 796                 len = strlen(init_args);
 797                 if(len != 0)
 798                         strcat(init_args," -d");
 799                 else
 800                         strcat(init_args,"-d");
 801         }
 802
 803         PE_parse_boot_arg("srv", &srv);
 804         PE_parse_boot_arg("ncl", &ncl);
 805         PE_parse_boot_arg("nbuf", &nbuf);
 806
 807         return 0;
 808 }
 809
 810 #if !NFSCLIENT
 811 int
 812 netboot_root(void)
 813 {
 814         return(0);
 815 }
 816 #endif