bsd/kern/bsd_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  * (c) UNIX System Laboratories, Inc.
  26  * All or some portions of this file are derived from material licensed
  27  * to the University of California by American Telephone and Telegraph
  28  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  29  * the permission of UNIX System Laboratories, Inc.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  *
  59  *      @(#)init_main.c 8.16 (Berkeley) 5/14/95
  60  */
  61
  62 /*
  63  *
  64  * Mach Operating System
  65  * Copyright (c) 1987 Carnegie-Mellon University
  66  * All rights reserved.  The CMU software License Agreement specifies
  67  * the terms and conditions for use and redistribution.
  68  */
  69 /*
  70  * HISTORY
  71  * 16-Apr-98  A. Ramesh at Apple
  72  *      Created for Apple Core from DR2 init_main.c.
  73  */
  74
  75 #include <quota.h>
  76
  77 #include <sys/param.h>
  78 #include <sys/filedesc.h>
  79 #include <sys/kernel.h>
  80 #include <sys/mount.h>
  81 #include <sys/proc.h>
  82 #include <sys/systm.h>
  83 #include <sys/vnode.h>
  84 #include <sys/conf.h>
  85 #include <sys/buf.h>
  86 #include <sys/clist.h>
  87 #include <sys/user.h>
  88 #include <ufs/ufs/quota.h>
  89
  90 #include <sys/malloc.h>
  91 #include <sys/dkstat.h>
  92
  93 #include <machine/spl.h>
  94 #include <kern/thread.h>
  95 #include <kern/task.h>
  96 #include <kern/ast.h>
  97
  98 #include <mach/vm_param.h>
  99
 100 #include <vm/vm_map.h>
 101 #include <vm/vm_kern.h>
 102
 103 #include <sys/ux_exception.h>
 104
 105 #include <sys/reboot.h>
 106 #include <mach/exception_types.h>
 107 #include <dev/busvar.h>
 108 #include <sys/kdebug.h>
 109
 110 #include <mach/mach_types.h>
 111 #include <mach/vm_prot.h>
 112 #include <mach/semaphore.h>
 113 #include <mach/sync_policy.h>
 114 #include <kern/clock.h>
 115 #include <mach/kern_return.h>
 116
 117 extern shared_region_mapping_t       system_shared_region;
 118
 119 char    copyright[] =
 120 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\tThe Regents of the University of California.  All rights reserved.\n\n";
 121
 122 extern void     ux_handler();
 123
 124 /* Components of the first process -- never freed. */
 125 struct  proc proc0;
 126 struct  session session0;
 127 struct  pgrp pgrp0;
 128 struct  pcred cred0;
 129 struct  filedesc filedesc0;
 130 struct  plimit limit0;
 131 struct  pstats pstats0;
 132 struct  sigacts sigacts0;
 133 struct  proc *kernproc, *initproc;
 134
 135
 136 long cp_time[CPUSTATES];
 137 long dk_seek[DK_NDRIVE];
 138 long dk_time[DK_NDRIVE];
 139 long dk_wds[DK_NDRIVE];
 140 long dk_wpms[DK_NDRIVE];
 141 long dk_xfer[DK_NDRIVE];
 142 long dk_bps[DK_NDRIVE];
 143
 144 int dk_busy;
 145 int dk_ndrive;
 146
 147 long tk_cancc;
 148 long tk_nin;
 149 long tk_nout;
 150 long tk_rawcc;
 151
 152 /* Global variables to make pstat happy. We do swapping differently */
 153 int nswdev, nswap;
 154 int nswapmap;
 155 void *swapmap;
 156 struct swdevt swdevt[1];
 157
 158 dev_t   rootdev;                /* device of the root */
 159 dev_t   dumpdev;                /* device to take dumps on */
 160 long    dumplo;                 /* offset into dumpdev */
 161 long    hostid;
 162 char    hostname[MAXHOSTNAMELEN];
 163 int     hostnamelen;
 164 char    domainname[MAXDOMNAMELEN];
 165 int     domainnamelen;
 166
 167 char rootdevice[16];    /* hfs device names have at least 9 chars */
 168 struct  timeval boottime;               /* GRODY!  This has to go... */
 169 #if FIXME  /* [ */
 170 struct  timeval time;
 171 #endif  /* FIXME ] */
 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    (4 * 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 vm_address_t bsd_init_task;
 191 extern char    init_task_failure_data[];
 192
 193 funnel_t * kernel_flock;
 194 funnel_t * network_flock;
 195 int disable_funnel = 0;         /* disables split funnel */
 196 int enable_funnel = 0;          /* disables split funnel */
 197
 198 /*
 199  * Initialization code.
 200  * Called from cold start routine as
 201  * soon as a stack and segmentation
 202  * have been established.
 203  * Functions:
 204  *      clear and free user core
 205  *      turn on clock
 206  *      hand craft 0th process
 207  *      call all initialization routines
 208  *      fork - process 0 to schedule
 209  *           - process 1 execute bootstrap
 210  *           - process 2 to page out
 211  */
 212
 213 /*
 214  *      Sets the name for the given task.
 215  */
 216 void
 217 proc_name(s, p)
 218         char            *s;
 219         struct proc *p;
 220 {
 221         int             length = strlen(s);
 222
 223         bcopy(s, p->p_comm,
 224                 length >= sizeof(p->p_comm) ? sizeof(p->p_comm) :
 225                         length + 1);
 226 }
 227
 228
 229 /* To allow these values to be patched, they're globals here */
 230 #include <machine/vmparam.h>
 231 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ };
 232 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 233 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 234
 235 extern thread_t first_thread;
 236
 237 #define SPL_DEBUG       0
 238 #if     SPL_DEBUG
 239 #define dprintf(x)      printf x
 240 #else   SPL_DEBUG
 241 #define dprintf(x)
 242 #endif  /* SPL_DEBUG */
 243
 244 extern thread_t cloneproc(struct proc *, int);
 245
 246 void
 247 bsd_init()
 248 {
 249         register struct proc *p;
 250         extern struct ucred *rootcred;
 251         register int i;
 252         int s;
 253         thread_t        th;
 254         extern void     bsdinit_task();
 255         void            lightning_bolt(void );
 256         kern_return_t   ret;
 257         boolean_t funnel_state;
 258         extern void uthread_zone_init();
 259
 260         extern int (*mountroot) __P((void));
 261
 262
 263 #if 1
 264         /* split funnel is enabled by default */
 265         PE_parse_boot_arg("dfnl", &disable_funnel);
 266 #else
 267         /* split funnel is disabled befault */
 268         disable_funnel = 1;
 269         PE_parse_boot_arg("efnl", &enable_funnel);
 270         if (enable_funnel)  {
 271                         /* enable only if efnl is set in bootarg */
 272                         disable_funnel = 0;
 273         }
 274 #endif
 275
 276         kernel_flock = funnel_alloc(KERNEL_FUNNEL);
 277         if (kernel_flock == (funnel_t *)0 ) {
 278                 panic("bsd_init: Fail to allocate kernel mutex lock");
 279         }
 280
 281
 282         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 283
 284         if (!disable_funnel) {
 285                 network_flock = funnel_alloc(NETWORK_FUNNEL);
 286                 if (network_flock == (funnel_t *)0 ) {
 287                         panic("bds_init: Fail to allocate network mutex lock");
 288                 }
 289         } else {
 290                 network_flock = kernel_flock;
 291         }
 292
 293
 294         printf(copyright);
 295
 296         kmeminit();
 297
 298         parse_bsd_args();
 299
 300         bsd_bufferinit();
 301
 302         /* Initialize the uthread zone */
 303         uthread_zone_init();
 304
 305         /*
 306          * Initialize process and pgrp structures.
 307          */
 308         procinit();
 309
 310         kernproc = &proc0;
 311
 312         p = kernproc;
 313
 314         /* kernel_task->proc = kernproc; */
 315         set_bsdtask_info(kernel_task,(void *)kernproc);
 316         p->p_pid = 0;
 317
 318         /* give kernproc a name */
 319         proc_name("kernel_task", p);
 320
 321         if (current_task() != kernel_task)
 322                 printf("We are in for problem, current task in not kernel task\n");
 323
 324         /*
 325          * Create process 0.
 326          */
 327         LIST_INSERT_HEAD(&allproc, p, p_list);
 328         p->p_pgrp = &pgrp0;
 329         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 330         LIST_INIT(&pgrp0.pg_members);
 331         LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
 332
 333         pgrp0.pg_session = &session0;
 334         session0.s_count = 1;
 335         session0.s_leader = p;
 336
 337         p->task = kernel_task;
 338
 339         p->p_stat = SRUN;
 340         p->p_flag = P_INMEM|P_SYSTEM;
 341         p->p_nice = NZERO;
 342         p->p_pptr = p;
 343         lockinit(&p->signal_lock, PVM, "signal", 0, 0);
 344         p->sigwait = FALSE;
 345         p->sigwait_thread = THREAD_NULL;
 346         p->exit_thread = THREAD_NULL;
 347
 348         /* Create credentials. */
 349         lockinit(&cred0.pc_lock, PLOCK, "proc0 cred", 0, 0);
 350         cred0.p_refcnt = 1;
 351         p->p_cred = &cred0;
 352         p->p_ucred = crget();
 353         p->p_ucred->cr_ngroups = 1;     /* group 0 */
 354
 355         /* Create the file descriptor table. */
 356         filedesc0.fd_refcnt = 1+1;      /* +1 so shutdown will not _FREE_ZONE */
 357         p->p_fd = &filedesc0;
 358         filedesc0.fd_cmask = cmask;
 359
 360         /* Create the limits structures. */
 361         p->p_limit = &limit0;
 362         for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
 363                 limit0.pl_rlimit[i].rlim_cur =
 364                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 365         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 366         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC;
 367         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 368         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 369         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 370         limit0.p_refcnt = 1;
 371
 372         p->p_stats = &pstats0;
 373         p->p_sigacts = &sigacts0;
 374
 375         /*
 376          * Charge root for one process.
 377          */
 378         (void)chgproccnt(0, 1);
 379
 380
 381         /*
 382          *      Allocate a kernel submap for pageable memory
 383          *      for temporary copying (execve()).
 384          */
 385         {
 386                 vm_offset_t     min;
 387
 388                 ret = kmem_suballoc(kernel_map,
 389                                 &min,
 390                                 (vm_size_t)BSD_PAGABLE_MAP_SIZE,
 391                                 TRUE,
 392                                 TRUE,
 393                                 &bsd_pageable_map);
 394         if (ret != KERN_SUCCESS)
 395                 panic("bsd_init: Failed to allocare bsd pageable map");
 396         }
 397
 398         /* Initialize the execve() semaphore */
 399         {
 400                 kern_return_t kret;
 401                 int value;
 402
 403                 value = BSD_PAGABLE_MAP_SIZE / NCARGS;
 404
 405                 kret = semaphore_create(kernel_task, &execve_semaphore,
 406                                 SYNC_POLICY_FIFO, value);
 407                 if (kret != KERN_SUCCESS)
 408                         panic("bsd_init: Failed to create execve semaphore");
 409         }
 410
 411         /*
 412          * Initialize the calendar.
 413          */
 414         IOKitResetTime();
 415
 416         ubc_init();
 417
 418         /* Initialize the file systems. */
 419         vfsinit();
 420
 421         /* Initialize mbuf's. */
 422         mbinit();
 423
 424         /* Initialize syslog */
 425         log_init();
 426
 427         /* Initialize SysV shm */
 428         shminit();
 429
 430         /* POSIX Shm and Sem */
 431         pshm_cache_init();
 432         psem_cache_init();
 433
 434         /*
 435          * Initialize protocols.  Block reception of incoming packets
 436          * until everything is ready.
 437          */
 438         s = splimp();
 439         sysctl_register_fixed();
 440         dlil_init();
 441         socketinit();
 442         domaininit();
 443         splx(s);
 444
 445         /*
 446          *      Create kernel idle cpu processes.  This must be done
 447          *      before a context switch can occur (and hence I/O can
 448          *      happen in the binit() call).
 449          */
 450         p->p_fd->fd_cdir = NULL;
 451         p->p_fd->fd_rdir = NULL;
 452
 453
 454 #ifdef GPROF
 455         /* Initialize kernel profiling. */
 456         kmstartup();
 457 #endif
 458
 459         /* kick off timeout driven events by calling first time */
 460         thread_wakeup(&lbolt);
 461         timeout(lightning_bolt,0,hz);
 462
 463         bsd_autoconf();
 464
 465         /*
 466          * We attach the loopback interface *way* down here to ensure
 467          * it happens after autoconf(), otherwise it becomes the
 468          * "primary" interface.
 469          */
 470 #include <loop.h>
 471 #if NLOOP > 0
 472         loopattach();                   /* XXX */
 473 #endif
 474
 475         vnode_pager_bootstrap();
 476
 477         /* Mount the root file system. */
 478         while( TRUE) {
 479                 int err;
 480
 481                 setconf();
 482                 /*
 483                  * read the time after clock_initialize_calendar()
 484                  * and before nfs mount
 485                  */
 486                 microtime(&time);
 487
 488                 if (0 == (err = vfs_mountroot()))
 489                         break;
 490                 printf("cannot mount root, errno = %d\n", err);
 491                 boothowto |= RB_ASKNAME;
 492         }
 493
 494         mountlist.cqh_first->mnt_flag |= MNT_ROOTFS;
 495
 496         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 497         if (VFS_ROOT(mountlist.cqh_first, &rootvnode))
 498                 panic("bsd_init: cannot find root vnode");
 499         filedesc0.fd_cdir = rootvnode;
 500         VREF(rootvnode);
 501         VOP_UNLOCK(rootvnode, 0, p);
 502
 503
 504         /*
 505          * Now can look at time, having had a chance to verify the time
 506          * from the file system.  Reset p->p_rtime as it may have been
 507          * munched in mi_switch() after the time got set.
 508          */
 509         p->p_stats->p_start = boottime = time;
 510         p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0;
 511
 512 #ifdef DEVFS
 513         {
 514             extern void devfs_kernel_mount(char * str);
 515
 516             devfs_kernel_mount("/dev");
 517         }
 518 #endif DEVFS
 519
 520         /* Initialize signal state for process 0. */
 521         siginit(p);
 522
 523         /* printf("Launching user process\n"); */
 524
 525         bsd_utaskbootstrap();
 526
 527         (void) thread_funnel_set(kernel_flock, FALSE);
 528 }
 529
 530 void
 531 bsdinit_task()
 532 {
 533         struct proc *p = current_proc();
 534         struct uthread *ut;
 535         kern_return_t   kr;
 536         thread_act_t th_act;
 537         boolean_t funnel_state;
 538
 539         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 540
 541 #if FIXME  /* [ */
 542
 543         ipc_port_t      master_bootstrap_port;
 544         task_t          bootstrap_task;
 545         thread_act_t    bootstrap_thr_act;
 546         ipc_port_t      root_device_port;
 547
 548         master_bootstrap_port = ipc_port_alloc_kernel();
 549         if (master_bootstrap_port == IP_NULL)
 550                 panic("can't allocate master bootstrap port");
 551         printf("setting bootstrap port \n");
 552         task_set_special_port(bootstrap_task,
 553                               TASK_BOOTSTRAP_PORT,
 554                               ipc_port_make_send(master_bootstrap_port));
 555
 556         printf("Setting exception port for the init task\n");
 557         (void) task_set_exception_ports(get_threadtask(th),
 558                                         EXC_MASK_ALL &
 559                                         ~(EXC_MASK_SYSCALL |
 560                           EXC_MASK_MACH_SYSCALL | EXC_MASK_RPC_ALERT),
 561                                         ux_exception_port,
 562                                         EXCEPTION_DEFAULT, 0);
 563
 564 #endif /* FIXME  ] */
 565         proc_name("init", p);
 566
 567         ux_handler_init();
 568         /* port_reference(ux_exception_port);*/
 569
 570         th_act = current_act();
 571         (void) host_set_exception_ports(host_priv_self(),
 572                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 573                                                          EXC_MASK_MACH_SYSCALL |
 574                                                          EXC_MASK_RPC_ALERT),
 575                                         ux_exception_port,
 576                                         EXCEPTION_DEFAULT, 0);
 577
 578         (void) task_set_exception_ports(get_threadtask(th_act),
 579                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 580                                                          EXC_MASK_MACH_SYSCALL |
 581                                                          EXC_MASK_RPC_ALERT),
 582                                         ux_exception_port,
 583                                         EXCEPTION_DEFAULT, 0);
 584
 585
 586
 587
 588         ut = (uthread_t)get_bsdthread_info(th_act);
 589         ut->uu_ar0 = (void *)get_user_regs(th_act);
 590
 591         bsd_hardclockinit = 1;  /* Start bsd hardclock */
 592         bsd_init_task = get_threadtask(th_act);
 593         init_task_failure_data[0] = 0;
 594         vm_set_shared_region(get_threadtask(th_act), system_shared_region);
 595         load_init_program(p);
 596
 597         (void) thread_funnel_set(kernel_flock, FALSE);
 598
 599 }
 600
 601 void
 602 lightning_bolt()
 603 {
 604         boolean_t       funnel_state;
 605         extern void klogwakeup(void);
 606
 607         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 608
 609         thread_wakeup(&lbolt);
 610         timeout(lightning_bolt,0,hz);
 611         klogwakeup();
 612
 613         (void) thread_funnel_set(kernel_flock, FALSE);
 614 }
 615
 616 bsd_autoconf(){
 617         extern kern_return_t IOKitBSDInit( void );
 618
 619         kminit();
 620
 621         /*
 622          * Early startup for bsd pseudodevices.
 623          */
 624         {
 625             struct pseudo_init *pi;
 626
 627             for (pi = pseudo_inits; pi->ps_func; pi++)
 628                 (*pi->ps_func) (pi->ps_count);
 629         }
 630
 631         return( IOKitBSDInit());
 632 }
 633
 634
 635 #include <sys/disklabel.h>  // for MAXPARTITIONS
 636
 637 setconf()
 638 {
 639         extern kern_return_t IOFindBSDRoot( char * rootName,
 640                                 dev_t * root, u_int32_t * flags );
 641
 642         extern int      (*mountroot) __P((void));
 643         extern int      nfs_mountroot();        /* nfs_vfsops.c */
 644
 645         u_int32_t       flags;
 646         kern_return_t   err;
 647
 648         /*
 649          * calls into IOKit can generate networking registrations
 650          * which needs to be under network funnel. Right thing to do
 651          * here is to drop the funnel alltogether and regrab it afterwards
 652          */
 653         thread_funnel_set(kernel_flock, FALSE);
 654         err = IOFindBSDRoot( rootdevice, &rootdev, &flags );
 655         thread_funnel_set(kernel_flock, TRUE);
 656         if( err) {
 657                 printf("setconf: IOFindBSDRoot returned an error (%d);"
 658                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
 659                 rootdev = makedev( 6, 0 );
 660                 strcpy( rootdevice, "sd0a" );
 661                 flags = 0;
 662         }
 663
 664         /* if network device then force nfs root */
 665         if( flags & 1 ) {
 666                 printf("mounting nfs root\n");
 667                 mountroot = nfs_mountroot;
 668         } else {
 669                 /* otherwise have vfs determine root filesystem */
 670                 mountroot = NULL;
 671         }
 672
 673 }
 674
 675 bsd_utaskbootstrap()
 676 {
 677         thread_act_t th_act;
 678
 679         th_act = (thread_act_t)cloneproc(kernproc, 0);
 680         initproc = pfind(1);
 681         thread_hold(th_act);
 682         (void) thread_stop_wait(getshuttle_thread(th_act));
 683         thread_ast_set(th_act,AST_BSD_INIT);
 684         thread_release(th_act);
 685         thread_unstop(getshuttle_thread(th_act));
 686         (void) thread_resume(th_act);
 687 }
 688
 689 parse_bsd_args()
 690 {
 691         extern char init_args[];
 692         char    namep[16];
 693         extern int boothowto;
 694         extern int srv;
 695         extern int ncl;
 696
 697         int len;
 698
 699         if (PE_parse_boot_arg("-s", namep)) {
 700                 boothowto |= RB_SINGLE;
 701                 len = strlen(init_args);
 702                 if(len != 0)
 703                         strcat(init_args," -s");
 704                 else
 705                         strcat(init_args,"-s");
 706         }
 707         if (PE_parse_boot_arg("-b", namep)) {
 708                 boothowto |= RB_NOBOOTRC;
 709                 len = strlen(init_args);
 710                 if(len != 0)
 711                         strcat(init_args," -b");
 712                 else
 713                         strcat(init_args,"-b");
 714         }
 715
 716         if (PE_parse_boot_arg("-F", namep)) {
 717                 len = strlen(init_args);
 718                 if(len != 0)
 719                         strcat(init_args," -F");
 720                 else
 721                         strcat(init_args,"-F");
 722         }
 723
 724         if (PE_parse_boot_arg("-v", namep)) {
 725                 len = strlen(init_args);
 726                 if(len != 0)
 727                         strcat(init_args," -v");
 728                 else
 729                         strcat(init_args,"-v");
 730         }
 731
 732         if (PE_parse_boot_arg("-x", namep)) { /* safe boot */
 733                 len = strlen(init_args);
 734                 if(len != 0)
 735                         strcat(init_args," -x");
 736                 else
 737                         strcat(init_args,"-x");
 738         }
 739
 740         PE_parse_boot_arg("srv", &srv);
 741         PE_parse_boot_arg("ncl", &ncl);
 742         PE_parse_boot_arg("nbuf", &nbuf);
 743
 744         return 0;
 745 }
 746
 747 boolean_t
 748 thread_funnel_switch(
 749         int     oldfnl,
 750         int     newfnl)
 751 {
 752         thread_t        cur_thread;
 753         boolean_t       funnel_state_prev;
 754         int curfnl;
 755         funnel_t * curflock;
 756         funnel_t * oldflock;
 757         funnel_t * newflock;
 758         funnel_t * exist_funnel;
 759         extern int disable_funnel;
 760
 761
 762                 if (disable_funnel)
 763                         return(TRUE);
 764
 765         if(oldfnl == newfnl) {
 766             panic("thread_funnel_switch: can't switch to same funnel");
 767         }
 768
 769         if ((oldfnl != NETWORK_FUNNEL) && (oldfnl != KERNEL_FUNNEL))
 770         {
 771             panic("thread_funnel_switch: invalid oldfunnel");
 772         }
 773         if ((newfnl != NETWORK_FUNNEL) && (newfnl != KERNEL_FUNNEL))
 774         {
 775             panic("thread_funnel_switch: invalid oldfunnel");
 776         }
 777
 778         if((curflock = thread_funnel_get()) == THR_FUNNEL_NULL) {
 779             panic("thread_funnel_switch: no funnel held");
 780         }
 781
 782         cur_thread = current_thread();
 783
 784         if ((oldfnl == NETWORK_FUNNEL) && (curflock != network_flock))
 785             panic("thread_funnel_switch: network funnel not held");
 786
 787         if ((oldfnl == KERNEL_FUNNEL) && (curflock != kernel_flock))
 788             panic("thread_funnel_switch: network funnel not held");
 789
 790         if(oldfnl == NETWORK_FUNNEL) {
 791             oldflock = network_flock;
 792             newflock = kernel_flock;
 793         } else {
 794             oldflock = kernel_flock;
 795             newflock = network_flock;
 796         }
 797                 KERNEL_DEBUG(0x603242c | DBG_FUNC_NONE, oldflock, 1, 0, 0, 0);
 798         thread_funnel_set(oldflock, FALSE);
 799                 KERNEL_DEBUG(0x6032428 | DBG_FUNC_NONE, newflock, 1, 0, 0, 0);
 800         thread_funnel_set(newflock, TRUE);
 801                 KERNEL_DEBUG(0x6032434 | DBG_FUNC_NONE, newflock, 1, 0, 0, 0);
 802
 803         return(TRUE);
 804 }