bsd/kern/bsd_init.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_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 License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
  30  *      The Regents of the University of California.  All rights reserved.
  31  * (c) UNIX System Laboratories, Inc.
  32  * All or some portions of this file are derived from material licensed
  33  * to the University of California by American Telephone and Telegraph
  34  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  35  * the permission of UNIX System Laboratories, Inc.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by the University of
  48  *      California, Berkeley and its contributors.
  49  * 4. Neither the name of the University nor the names of its contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  *      @(#)init_main.c 8.16 (Berkeley) 5/14/95
  66  */
  67
  68 /*
  69  *
  70  * Mach Operating System
  71  * Copyright (c) 1987 Carnegie-Mellon University
  72  * All rights reserved.  The CMU software License Agreement specifies
  73  * the terms and conditions for use and redistribution.
  74  */
  75
  76 #include <sys/param.h>
  77 #include <sys/filedesc.h>
  78 #include <sys/kernel.h>
  79 #include <sys/mount_internal.h>
  80 #include <sys/proc_internal.h>
  81 #include <sys/kauth.h>
  82 #include <sys/systm.h>
  83 #include <sys/vnode_internal.h>
  84 #include <sys/conf.h>
  85 #include <sys/buf_internal.h>
  86 #include <sys/clist.h>
  87 #include <sys/user.h>
  88 #include <sys/time.h>
  89 #include <sys/systm.h>
  90 #include <sys/mman.h>
  91
  92 #include <bsm/audit_kernel.h>
  93
  94 #include <sys/malloc.h>
  95 #include <sys/dkstat.h>
  96
  97 #include <kern/startup.h>
  98 #include <kern/thread.h>
  99 #include <kern/task.h>
 100 #include <kern/ast.h>
 101
 102 #include <mach/vm_param.h>
 103
 104 #include <vm/vm_map.h>
 105 #include <vm/vm_kern.h>
 106
 107 #include <sys/ux_exception.h>   /* for ux_exception_port */
 108
 109 #include <sys/reboot.h>
 110 #include <mach/exception_types.h>
 111 #include <dev/busvar.h>                 /* for pseudo_inits */
 112 #include <sys/kdebug.h>
 113
 114 #include <mach/mach_types.h>
 115 #include <mach/vm_prot.h>
 116 #include <mach/semaphore.h>
 117 #include <mach/sync_policy.h>
 118 #include <kern/clock.h>
 119 #include <mach/kern_return.h>
 120
 121 #include <mach/shared_memory_server.h>
 122 #include <vm/vm_shared_memory_server.h>
 123
 124 #include <net/init.h>
 125
 126 extern int app_profile;         /* on/off switch for pre-heat cache */
 127
 128 char    copyright[] =
 129 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
 130 "The Regents of the University of California. "
 131 "All rights reserved.\n\n";
 132
 133 extern void     ux_handler();
 134
 135 /* Components of the first process -- never freed. */
 136 struct  proc proc0;
 137 struct  session session0;
 138 struct  pgrp pgrp0;
 139 struct  filedesc filedesc0;
 140 struct  plimit limit0;
 141 struct  pstats pstats0;
 142 struct  sigacts sigacts0;
 143 struct  proc *kernproc, *initproc;
 144
 145 long tk_cancc;
 146 long tk_nin;
 147 long tk_nout;
 148 long tk_rawcc;
 149
 150 int lock_trace = 0;
 151 /* Global variables to make pstat happy. We do swapping differently */
 152 int nswdev, nswap;
 153 int nswapmap;
 154 void *swapmap;
 155 struct swdevt swdevt[1];
 156
 157 dev_t   rootdev;                /* device of the root */
 158 dev_t   dumpdev;                /* device to take dumps on */
 159 long    dumplo;                 /* offset into dumpdev */
 160 long    hostid;
 161 char    hostname[MAXHOSTNAMELEN];
 162 int             hostnamelen;
 163 char    domainname[MAXDOMNAMELEN];
 164 int             domainnamelen;
 165 char    classichandler[32] = {0};
 166 uint32_t        classichandler_fsid = -1L;
 167 long    classichandler_fileid = -1L;
 168
 169 char rootdevice[16];    /* hfs device names have at least 9 chars */
 170
 171 #ifdef  KMEMSTATS
 172 struct  kmemstats kmemstats[M_LAST];
 173 #endif
 174
 175 int     lbolt;                          /* awoken once a second */
 176 struct  vnode *rootvp;
 177 int boothowto = RB_DEBUG;
 178
 179 #define BSD_PAGABLE_MAP_SIZE    (16 * 512 * 1024)
 180 vm_map_t        bsd_pageable_map;
 181 vm_map_t        mb_map;
 182 semaphore_t execve_semaphore;
 183
 184 int     cmask = CMASK;
 185
 186 int parse_bsd_args(void);
 187 extern int bsd_hardclockinit;
 188 extern task_t bsd_init_task;
 189 extern char    init_task_failure_data[];
 190 extern void time_zone_slock_init(void);
 191 static void process_name(char *, struct proc *);
 192
 193 static void setconf(void);
 194
 195 funnel_t *kernel_flock;
 196
 197 extern void sysv_shm_lock_init(void);
 198 extern void sysv_sem_lock_init(void);
 199 extern void sysv_msg_lock_init(void);
 200 extern void pshm_lock_init();
 201 extern void psem_lock_init();
 202
 203 /*
 204  * Initialization code.
 205  * Called from cold start routine as
 206  * soon as a stack and segmentation
 207  * have been established.
 208  * Functions:
 209  *      turn on clock
 210  *      hand craft 0th process
 211  *      call all initialization routines
 212  *  hand craft 1st user process
 213  */
 214
 215 /*
 216  *      Sets the name for the given task.
 217  */
 218 static void
 219 process_name(s, p)
 220         char            *s;
 221         struct proc *p;
 222 {
 223         int             length = strlen(s);
 224
 225         bcopy(s, p->p_comm,
 226                 length >= sizeof(p->p_comm) ? sizeof(p->p_comm) :
 227                         length + 1);
 228 }
 229
 230 /* To allow these values to be patched, they're globals here */
 231 #include <machine/vmparam.h>
 232 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ };
 233 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 234 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 235
 236 extern thread_t cloneproc(struct proc *, int);
 237 extern int      (*mountroot)(void);
 238 extern int      netboot_mountroot();    /* netboot.c */
 239 extern int      netboot_setup(struct proc * p);
 240
 241 lck_grp_t * proc_lck_grp;
 242 lck_grp_attr_t * proc_lck_grp_attr;
 243 lck_attr_t * proc_lck_attr;
 244
 245 /* hook called after root is mounted XXX temporary hack */
 246 void (*mountroot_post_hook)(void);
 247
 248 /*
 249  * This function is called very early on in the Mach startup, from the
 250  * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 251  * in the context of the current (startup) task using a call to the
 252  * function kernel_thread_create() to jump into start_kernel_threads().
 253  * Internally, kernel_thread_create() calls thread_create_internal(),
 254  * which calls uthread_alloc().  The function of uthread_alloc() is
 255  * normally to allocate a uthread structure, and fill out the uu_sigmask,
 256  * uu_act, and uu_ucred fields.  It skips filling these out in the case
 257  * of the "task" being "kernel_task", because the order of operation is
 258  * inverted.  To account for that, we need to manually fill in at least
 259  * the uu_cred field so that the uthread structure can be used like any
 260  * other.
 261  */
 262 void
 263 bsd_init()
 264 {
 265         register struct proc *p;
 266         struct uthread *ut;
 267         extern kauth_cred_t rootcred;
 268         register int i;
 269         int s;
 270         thread_t        th;
 271         struct vfs_context context;
 272         void            lightning_bolt(void );
 273         kern_return_t   ret;
 274         boolean_t funnel_state;
 275         struct ucred temp_cred;
 276         extern void file_lock_init(void);
 277
 278         kernel_flock = funnel_alloc(KERNEL_FUNNEL);
 279         if (kernel_flock == (funnel_t *)0 ) {
 280                 panic("bsd_init: Failed to allocate kernel funnel");
 281         }
 282
 283         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 284
 285         printf(copyright);
 286
 287         kmeminit();
 288
 289         parse_bsd_args();
 290
 291         /* Initialize the uthread zone */
 292         //uthread_zone_init();  /* XXX redundant: previous uthread_alloc() */
 293
 294         /* Initialize kauth subsystem before instancing the first credential */
 295         kauth_init();
 296
 297         /* Initialize process and pgrp structures. */
 298         procinit();
 299
 300         kernproc = &proc0;
 301
 302         p = kernproc;
 303
 304         /* kernel_task->proc = kernproc; */
 305         set_bsdtask_info(kernel_task,(void *)p);
 306         p->p_pid = 0;
 307
 308         /* give kernproc a name */
 309         process_name("kernel_task", p);
 310
 311
 312         /* allocate proc lock group attribute and group */
 313         proc_lck_grp_attr= lck_grp_attr_alloc_init();
 314         lck_grp_attr_setstat(proc_lck_grp_attr);
 315
 316         proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
 317
 318
 319         /* Allocate proc lock attribute */
 320         proc_lck_attr = lck_attr_alloc_init();
 321         //lck_attr_setdebug(proc_lck_attr);
 322
 323         lck_mtx_init(&p->p_mlock, proc_lck_grp, proc_lck_attr);
 324         lck_mtx_init(&p->p_fdmlock, proc_lck_grp, proc_lck_attr);
 325
 326         if (current_task() != kernel_task)
 327                 printf("bsd_init: We have a problem, "
 328                                 "current task is not kernel task\n");
 329
 330         ut = (uthread_t)get_bsdthread_info(current_thread());
 331
 332         /*
 333          * Create process 0.
 334          */
 335         LIST_INSERT_HEAD(&allproc, p, p_list);
 336         p->p_pgrp = &pgrp0;
 337         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 338         LIST_INIT(&pgrp0.pg_members);
 339         LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
 340
 341         pgrp0.pg_session = &session0;
 342         session0.s_count = 1;
 343         session0.s_leader = p;
 344
 345         p->task = kernel_task;
 346
 347         p->p_stat = SRUN;
 348         p->p_flag = P_SYSTEM;
 349         p->p_nice = NZERO;
 350         p->p_pptr = p;
 351         lockinit(&p->signal_lock, PVM, "signal", 0, 0);
 352         TAILQ_INIT(&p->p_uthlist);
 353         p->sigwait = FALSE;
 354         p->sigwait_thread = THREAD_NULL;
 355         p->exit_thread = THREAD_NULL;
 356
 357         /*
 358          * Create credential.  This also Initializes the audit information.
 359          * XXX It is not clear what the initial values should be for audit ID,
 360          * XXX session ID, etc..
 361          */
 362         bzero(&temp_cred, sizeof(temp_cred));
 363         temp_cred.cr_ngroups = 1;
 364
 365         p->p_ucred = kauth_cred_create(&temp_cred);
 366
 367         /* give the (already exisiting) initial thread a reference on it */
 368         kauth_cred_ref(p->p_ucred);
 369         ut->uu_ucred = p->p_ucred;
 370
 371         TAILQ_INIT(&p->aio_activeq);
 372         TAILQ_INIT(&p->aio_doneq);
 373         p->aio_active_count = 0;
 374         p->aio_done_count = 0;
 375
 376         file_lock_init();
 377
 378         /* Create the file descriptor table. */
 379         filedesc0.fd_refcnt = 1+1;      /* +1 so shutdown will not _FREE_ZONE */
 380         p->p_fd = &filedesc0;
 381         filedesc0.fd_cmask = cmask;
 382         filedesc0.fd_knlistsize = -1;
 383         filedesc0.fd_knlist = NULL;
 384         filedesc0.fd_knhash = NULL;
 385         filedesc0.fd_knhashmask = 0;
 386
 387         /* Create the limits structures. */
 388         p->p_limit = &limit0;
 389         for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
 390                 limit0.pl_rlimit[i].rlim_cur =
 391                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 392         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 393         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC;
 394         limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 395         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 396         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 397         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 398         limit0.p_refcnt = 1;
 399
 400         p->p_stats = &pstats0;
 401         p->p_sigacts = &sigacts0;
 402
 403         /*
 404          * Charge root for two  processes: init and mach_init.
 405          */
 406         (void)chgproccnt(0, 1);
 407
 408         /*
 409          *      Allocate a kernel submap for pageable memory
 410          *      for temporary copying (execve()).
 411          */
 412         {
 413                 vm_offset_t     min;
 414
 415                 ret = kmem_suballoc(kernel_map,
 416                                 &min,
 417                                 (vm_size_t)BSD_PAGABLE_MAP_SIZE,
 418                                 TRUE,
 419                                 VM_FLAGS_ANYWHERE,
 420                                 &bsd_pageable_map);
 421                 if (ret != KERN_SUCCESS)
 422                         panic("bsd_init: Failed to allocate bsd pageable map");
 423         }
 424
 425         /*
 426          * Initialize buffers and hash links for buffers
 427          *
 428          * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
 429          *              happen after a credential has been associated with
 430          *              the kernel task.
 431          */
 432         bsd_bufferinit();
 433
 434         /* Initialize the execve() semaphore */
 435         ret = semaphore_create(kernel_task, &execve_semaphore,
 436                         SYNC_POLICY_FIFO, (BSD_PAGABLE_MAP_SIZE / NCARGS));
 437         if (ret != KERN_SUCCESS)
 438                 panic("bsd_init: Failed to create execve semaphore");
 439
 440         /*
 441          * Initialize the calendar.
 442          */
 443         IOKitResetTime();
 444
 445         ubc_init();
 446
 447         /* Initialize the file systems. */
 448         vfsinit();
 449
 450         /* Initialize mbuf's. */
 451         mbinit();
 452
 453         /*
 454          * Initializes security event auditing.
 455          * XXX: Should/could this occur later?
 456          */
 457         audit_init();
 458
 459         /* Initialize kqueues */
 460         knote_init();
 461
 462         /* Initialize for async IO */
 463         aio_init();
 464
 465         /* Initialize pipes */
 466         pipeinit();
 467
 468         /* Initialize SysV shm subsystem locks; the subsystem proper is
 469          * initialized through a sysctl.
 470          */
 471         sysv_shm_lock_init();
 472         sysv_sem_lock_init();
 473         sysv_msg_lock_init();
 474         pshm_lock_init();
 475         psem_lock_init();
 476
 477         /* POSIX Shm and Sem */
 478         pshm_cache_init();
 479         psem_cache_init();
 480         time_zone_slock_init();
 481
 482         /*
 483          * Initialize protocols.  Block reception of incoming packets
 484          * until everything is ready.
 485          */
 486         sysctl_register_fixed();
 487         sysctl_mib_init();
 488         dlil_init();
 489         proto_kpi_init();
 490         socketinit();
 491         domaininit();
 492
 493         p->p_fd->fd_cdir = NULL;
 494         p->p_fd->fd_rdir = NULL;
 495
 496 #ifdef GPROF
 497         /* Initialize kernel profiling. */
 498         kmstartup();
 499 #endif
 500
 501         /* kick off timeout driven events by calling first time */
 502         thread_wakeup(&lbolt);
 503         timeout((void (*)(void *))lightning_bolt, 0, hz);
 504
 505         bsd_autoconf();
 506
 507         /*
 508          * We attach the loopback interface *way* down here to ensure
 509          * it happens after autoconf(), otherwise it becomes the
 510          * "primary" interface.
 511          */
 512 #include <loop.h>
 513 #if NLOOP > 0
 514         loopattach();                   /* XXX */
 515 #endif
 516
 517         /* Register the built-in dlil ethernet interface family */
 518         ether_family_init();
 519
 520         /* Call any kext code that wants to run just after network init */
 521         net_init_run();
 522
 523         vnode_pager_bootstrap();
 524 #if 0
 525         /* XXX Hack for early debug stop */
 526         printf("\nabout to sleep for 10 seconds\n");
 527         IOSleep( 10 * 1000 );
 528         /* Debugger("hello"); */
 529 #endif
 530
 531         inittodr(0);
 532
 533         /* Mount the root file system. */
 534         while( TRUE) {
 535                 int err;
 536
 537                 setconf();
 538                 bsd_hardclockinit = -1; /* start ticking */
 539
 540                 if (0 == (err = vfs_mountroot()))
 541                         break;
 542 #if NFSCLIENT
 543                 if (mountroot == netboot_mountroot) {
 544                         printf("cannot mount network root, errno = %d\n", err);
 545                         mountroot = NULL;
 546                         if (0 == (err = vfs_mountroot()))
 547                                 break;
 548                 }
 549 #endif
 550                 printf("cannot mount root, errno = %d\n", err);
 551                 boothowto |= RB_ASKNAME;
 552         }
 553
 554         context.vc_proc = p;
 555         context.vc_ucred = p->p_ucred;
 556         mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
 557
 558         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 559         if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
 560                 panic("bsd_init: cannot find root vnode");
 561         rootvnode->v_flag |= VROOT;
 562         (void)vnode_ref(rootvnode);
 563         (void)vnode_put(rootvnode);
 564         filedesc0.fd_cdir = rootvnode;
 565
 566 #if NFSCLIENT
 567         if (mountroot == netboot_mountroot) {
 568                 int err;
 569                 /* post mount setup */
 570                 if (err = netboot_setup(p)) {
 571                         panic("bsd_init: NetBoot could not find root, %d", err);
 572                 }
 573         }
 574 #endif
 575
 576
 577         microtime(&p->p_stats->p_start);
 578         p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0;
 579
 580 #if DEVFS
 581         {
 582             extern void devfs_kernel_mount(char * str);
 583
 584             devfs_kernel_mount("/dev");
 585         }
 586 #endif /* DEVFS */
 587
 588         /* Initialize signal state for process 0. */
 589         siginit(p);
 590
 591         bsd_utaskbootstrap();
 592
 593         /* invoke post-root-mount hook */
 594         if (mountroot_post_hook != NULL)
 595                 mountroot_post_hook();
 596
 597         (void) thread_funnel_set(kernel_flock, funnel_state);
 598 }
 599
 600 /* Called with kernel funnel held */
 601 void
 602 bsdinit_task(void)
 603 {
 604         struct proc *p = current_proc();
 605         struct uthread *ut;
 606         kern_return_t   kr;
 607         thread_t th_act;
 608         shared_region_mapping_t system_region;
 609
 610         process_name("init", p);
 611
 612         ux_handler_init();
 613
 614         th_act = current_thread();
 615         (void) host_set_exception_ports(host_priv_self(),
 616                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 617                                                          EXC_MASK_MACH_SYSCALL |
 618                                                          EXC_MASK_RPC_ALERT),
 619                                         ux_exception_port,
 620                                         EXCEPTION_DEFAULT, 0);
 621
 622         (void) task_set_exception_ports(get_threadtask(th_act),
 623                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 624                                                          EXC_MASK_MACH_SYSCALL |
 625                                                          EXC_MASK_RPC_ALERT),
 626                                         ux_exception_port,
 627                                         EXCEPTION_DEFAULT, 0);
 628
 629
 630
 631
 632         ut = (uthread_t)get_bsdthread_info(th_act);
 633         ut->uu_ar0 = (void *)get_user_regs(th_act);
 634
 635         bsd_hardclockinit = 1;  /* Start bsd hardclock */
 636         bsd_init_task = get_threadtask(th_act);
 637         init_task_failure_data[0] = 0;
 638         system_region = lookup_default_shared_region(ENV_DEFAULT_ROOT, cpu_type());
 639         if (system_region == NULL) {
 640                 shared_file_boot_time_init(ENV_DEFAULT_ROOT, cpu_type());
 641         } else {
 642                 vm_set_shared_region(get_threadtask(th_act), system_region);
 643         }
 644         load_init_program(p);
 645         /* turn on app-profiling i.e. pre-heating */
 646         app_profile = 1;
 647         lock_trace = 1;
 648 }
 649
 650 void
 651 lightning_bolt()
 652 {
 653         boolean_t       funnel_state;
 654         extern void klogwakeup(void);
 655
 656         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 657
 658         thread_wakeup(&lbolt);
 659         timeout(lightning_bolt,0,hz);
 660         klogwakeup();
 661
 662         (void) thread_funnel_set(kernel_flock, FALSE);
 663 }
 664
 665 bsd_autoconf()
 666 {
 667         extern kern_return_t IOKitBSDInit( void );
 668
 669         kminit();
 670
 671         /*
 672          * Early startup for bsd pseudodevices.
 673          */
 674         {
 675             struct pseudo_init *pi;
 676
 677             for (pi = pseudo_inits; pi->ps_func; pi++)
 678                 (*pi->ps_func) (pi->ps_count);
 679         }
 680
 681         return( IOKitBSDInit());
 682 }
 683
 684
 685 #include <sys/disklabel.h>  /* for MAXPARTITIONS */
 686
 687 static void
 688 setconf(void)
 689 {
 690         extern kern_return_t IOFindBSDRoot( char * rootName,
 691                                 dev_t * root, u_int32_t * flags );
 692         u_int32_t       flags;
 693         kern_return_t   err;
 694
 695         /*
 696          * calls into IOKit can generate networking registrations
 697          * which needs to be under network funnel. Right thing to do
 698          * here is to drop the funnel alltogether and regrab it afterwards
 699          */
 700         thread_funnel_set(kernel_flock, FALSE);
 701         err = IOFindBSDRoot( rootdevice, &rootdev, &flags );
 702         thread_funnel_set(kernel_flock, TRUE);
 703         if( err) {
 704                 printf("setconf: IOFindBSDRoot returned an error (%d);"
 705                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
 706                 rootdev = makedev( 6, 0 );
 707                 strcpy( rootdevice, "sd0a" );
 708                 flags = 0;
 709         }
 710
 711 #if NFSCLIENT
 712         if( flags & 1 ) {
 713                 /* network device */
 714                 mountroot = netboot_mountroot;
 715         } else {
 716 #endif
 717                 /* otherwise have vfs determine root filesystem */
 718                 mountroot = NULL;
 719 #if NFSCLIENT
 720         }
 721 #endif
 722
 723 }
 724
 725 bsd_utaskbootstrap()
 726 {
 727         thread_t th_act;
 728         struct uthread *ut;
 729
 730         th_act = cloneproc(kernproc, 0);
 731         initproc = pfind(1);
 732         /* Set the launch time for init */
 733         microtime(&initproc->p_stats->p_start);
 734
 735         ut = (struct uthread *)get_bsdthread_info(th_act);
 736         ut->uu_sigmask = 0;
 737         act_set_astbsd(th_act);
 738         (void) thread_resume(th_act);
 739 }
 740
 741 parse_bsd_args()
 742 {
 743         extern char init_args[];
 744         char    namep[16];
 745         extern int boothowto;
 746         extern int srv;
 747         extern int ncl;
 748
 749         int len;
 750
 751         if (PE_parse_boot_arg("-s", namep)) {
 752                 boothowto |= RB_SINGLE;
 753                 len = strlen(init_args);
 754                 if(len != 0)
 755                         strcat(init_args," -s");
 756                 else
 757                         strcat(init_args,"-s");
 758         }
 759
 760         if (PE_parse_boot_arg("-b", namep)) {
 761                 boothowto |= RB_NOBOOTRC;
 762                 len = strlen(init_args);
 763                 if(len != 0)
 764                         strcat(init_args," -b");
 765                 else
 766                         strcat(init_args,"-b");
 767         }
 768
 769         if (PE_parse_boot_arg("-F", namep)) {
 770                 len = strlen(init_args);
 771                 if(len != 0)
 772                         strcat(init_args," -F");
 773                 else
 774                         strcat(init_args,"-F");
 775         }
 776
 777         if (PE_parse_boot_arg("-v", namep)) {
 778                 len = strlen(init_args);
 779                 if(len != 0)
 780                         strcat(init_args," -v");
 781                 else
 782                         strcat(init_args,"-v");
 783         }
 784
 785         if (PE_parse_boot_arg("-x", namep)) { /* safe boot */
 786                 len = strlen(init_args);
 787                 if(len != 0)
 788                         strcat(init_args," -x");
 789                 else
 790                         strcat(init_args,"-x");
 791         }
 792
 793         if (PE_parse_boot_arg("-d", namep)) {
 794                 len = strlen(init_args);
 795                 if(len != 0)
 796                         strcat(init_args," -d");
 797                 else
 798                         strcat(init_args,"-d");
 799         }
 800
 801         PE_parse_boot_arg("srv", &srv);
 802         PE_parse_boot_arg("ncl", &ncl);
 803         PE_parse_boot_arg("nbuf", &nbuf);
 804
 805         return 0;
 806 }
 807
 808 #if !NFSCLIENT
 809 int
 810 netboot_root(void)
 811 {
 812         return(0);
 813 }
 814 #endif