bsd/kern/bsd_init.c

   1 /*
   2  * Copyright (c) 2000-2015 Apple 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  * NOTICE: This file was modified by McAfee Research in 2004 to introduce
  77  * support for mandatory and extensible security protections.  This notice
  78  * is included in support of clause 2.2 (b) of the Apple Public License,
  79  * Version 2.0.
  80  */
  81
  82 #include <sys/param.h>
  83 #include <sys/filedesc.h>
  84 #include <sys/kernel.h>
  85 #include <sys/mount_internal.h>
  86 #include <sys/proc_internal.h>
  87 #include <sys/kauth.h>
  88 #include <sys/systm.h>
  89 #include <sys/vnode_internal.h>
  90 #include <sys/conf.h>
  91 #include <sys/buf_internal.h>
  92 #include <sys/clist.h>
  93 #include <sys/user.h>
  94 #include <sys/time.h>
  95 #include <sys/systm.h>
  96 #include <sys/mman.h>
  97
  98 #include <security/audit/audit.h>
  99
 100 #include <sys/malloc.h>
 101 #include <sys/dkstat.h>
 102 #include <sys/codesign.h>
 103
 104 #include <kern/startup.h>
 105 #include <kern/thread.h>
 106 #include <kern/task.h>
 107 #include <kern/ast.h>
 108 #include <kern/kalloc.h>
 109 #include <mach/mach_host.h>
 110
 111 #include <mach/vm_param.h>
 112
 113 #include <vm/vm_map.h>
 114 #include <vm/vm_kern.h>
 115
 116 #include <sys/ux_exception.h>   /* for ux_exception_port */
 117
 118 #include <sys/reboot.h>
 119 #include <mach/exception_types.h>
 120 #include <dev/busvar.h>                 /* for pseudo_inits */
 121 #include <sys/kdebug.h>
 122 #include <sys/reason.h>
 123
 124 #include <mach/mach_types.h>
 125 #include <mach/vm_prot.h>
 126 #include <mach/semaphore.h>
 127 #include <mach/sync_policy.h>
 128 #include <kern/clock.h>
 129 #include <mach/kern_return.h>
 130 #include <mach/thread_act.h>            /* for thread_resume() */
 131 #include <mach/task.h>                  /* for task_set_exception_ports() */
 132 #include <sys/ux_exception.h>           /* for ux_handler() */
 133 #include <sys/ubc_internal.h>           /* for ubc_init() */
 134 #include <sys/mcache.h>                 /* for mcache_init() */
 135 #include <sys/mbuf.h>                   /* for mbinit() */
 136 #include <sys/event.h>                  /* for knote_init() */
 137 #include <sys/kern_memorystatus.h>      /* for memorystatus_init() */
 138 #include <sys/aio_kern.h>               /* for aio_init() */
 139 #include <sys/semaphore.h>              /* for psem_cache_init() */
 140 #include <net/dlil.h>                   /* for dlil_init() */
 141 #include <net/kpi_protocol.h>           /* for proto_kpi_init() */
 142 #include <net/iptap.h>                  /* for iptap_init() */
 143 #include <sys/pipe.h>                   /* for pipeinit() */
 144 #include <sys/socketvar.h>              /* for socketinit() */
 145 #include <sys/protosw.h>                /* for domaininit() */
 146 #include <kern/sched_prim.h>            /* for thread_wakeup() */
 147 #include <net/if_ether.h>               /* for ether_family_init() */
 148 #include <net/if_gif.h>                 /* for gif_init() */
 149 #include <vm/vm_protos.h>               /* for vnode_pager_bootstrap() */
 150 #include <miscfs/devfs/devfsdefs.h>     /* for devfs_kernel_mount() */
 151 #include <mach/host_priv.h>             /* for host_set_exception_ports() */
 152 #include <kern/host.h>                  /* for host_priv_self() */
 153 #include <vm/vm_kern.h>                 /* for kmem_suballoc() */
 154 #include <sys/semaphore.h>              /* for psem_lock_init() */
 155 #include <sys/msgbuf.h>                 /* for log_setsize() */
 156 #include <sys/tty.h>                    /* for tty_init() */
 157 #include <sys/proc_uuid_policy.h>       /* proc_uuid_policy_init() */
 158 #include <netinet/flow_divert.h>        /* flow_divert_init() */
 159 #include <net/content_filter.h>         /* for cfil_init() */
 160 #include <net/necp.h>                   /* for necp_init() */
 161 #include <net/network_agent.h>          /* for netagent_init() */
 162 #include <net/packet_mangler.h>         /* for pkt_mnglr_init() */
 163 #include <net/if_utun.h>                /* for utun_register_control() */
 164 #include <net/if_ipsec.h>               /* for ipsec_register_control() */
 165 #include <net/net_str_id.h>             /* for net_str_id_init() */
 166 #include <net/netsrc.h>                 /* for netsrc_init() */
 167 #include <net/ntstat.h>                 /* for nstat_init() */
 168 #include <netinet/tcp_cc.h>                     /* for tcp_cc_init() */
 169 #include <netinet/mptcp_var.h>          /* for mptcp_control_register() */
 170 #include <kern/assert.h>                /* for assert() */
 171 #include <sys/kern_overrides.h>         /* for init_system_override() */
 172
 173 #include <net/init.h>
 174
 175 #if CONFIG_MACF
 176 #include <security/mac_framework.h>
 177 #include <security/mac_internal.h>      /* mac_init_bsd() */
 178 #include <security/mac_mach_internal.h> /* mac_update_task_label() */
 179 #endif
 180
 181 #include <machine/exec.h>
 182
 183 #if NFSCLIENT
 184 #include <sys/netboot.h>
 185 #endif
 186
 187 #if CONFIG_IMAGEBOOT
 188 #include <sys/imageboot.h>
 189 #endif
 190
 191 #if PFLOG
 192 #include <net/if_pflog.h>
 193 #endif
 194
 195
 196 #include <pexpert/pexpert.h>
 197 #include <machine/pal_routines.h>
 198 #include <console/video_console.h>
 199
 200
 201 void * get_user_regs(thread_t);         /* XXX kludge for <machine/thread.h> */
 202 void IOKitInitializeTime(void);         /* XXX */
 203 void IOSleep(unsigned int);             /* XXX */
 204 void loopattach(void);                  /* XXX */
 205
 206 const char    copyright[] =
 207 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
 208 "The Regents of the University of California. "
 209 "All rights reserved.\n\n";
 210
 211 /* Components of the first process -- never freed. */
 212 struct  proc proc0;
 213 struct  session session0;
 214 struct  pgrp pgrp0;
 215 struct  filedesc filedesc0;
 216 struct  plimit limit0;
 217 struct  pstats pstats0;
 218 struct  sigacts sigacts0;
 219 proc_t kernproc;
 220 proc_t initproc;
 221
 222 long tk_cancc;
 223 long tk_nin;
 224 long tk_nout;
 225 long tk_rawcc;
 226
 227 int lock_trace = 0;
 228 /* Global variables to make pstat happy. We do swapping differently */
 229 int nswdev, nswap;
 230 int nswapmap;
 231 void *swapmap;
 232 struct swdevt swdevt[1];
 233
 234 dev_t   rootdev;                /* device of the root */
 235 dev_t   dumpdev;                /* device to take dumps on */
 236 long    dumplo;                 /* offset into dumpdev */
 237 long    hostid;
 238 char    hostname[MAXHOSTNAMELEN];
 239 int             hostnamelen;
 240 char    domainname[MAXDOMNAMELEN];
 241 int             domainnamelen;
 242
 243 char rootdevice[16];    /* device names have at least 9 chars */
 244
 245 #if  KMEMSTATS
 246 struct  kmemstats kmemstats[M_LAST];
 247 #endif
 248
 249 struct  vnode *rootvp;
 250 int boothowto = RB_DEBUG;
 251 int minimalboot = 0;
 252
 253 #if PROC_REF_DEBUG
 254 __private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */
 255 #endif
 256
 257 #if OS_REASON_DEBUG
 258 __private_extern__ int os_reason_debug_disabled = 0; /* disable asserts for when we fail to allocate OS reasons */
 259 #endif
 260
 261 extern kern_return_t IOFindBSDRoot(char *, unsigned int, dev_t *, u_int32_t *);
 262 extern void IOSecureBSDRoot(const char * rootName);
 263 extern kern_return_t IOKitBSDInit(void );
 264 extern void kminit(void);
 265 extern void file_lock_init(void);
 266 extern void kmeminit(void);
 267 extern void bsd_bufferinit(void);
 268 extern void oslog_setsize(int size);
 269 extern void throttle_init(void);
 270 extern void acct_init(void);
 271
 272 extern int serverperfmode;
 273 extern int ncl;
 274
 275 vm_map_t        bsd_pageable_map;
 276 vm_map_t        mb_map;
 277
 278 static  int bsd_simul_execs;
 279 static int bsd_pageable_map_size;
 280 __private_extern__ int execargs_cache_size = 0;
 281 __private_extern__ int execargs_free_count = 0;
 282 __private_extern__ vm_offset_t * execargs_cache = NULL;
 283
 284 void bsd_exec_setup(int);
 285
 286 __private_extern__ int bootarg_vnode_cache_defeat = 0;
 287
 288 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
 289 __private_extern__ int bootarg_no_vnode_jetsam = 0;
 290 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
 291
 292 /*
 293  * Prevent kernel-based ASLR from being used, for testing.
 294  */
 295 #if DEVELOPMENT || DEBUG
 296 __private_extern__ int bootarg_disable_aslr = 0;
 297 #endif
 298
 299 /*
 300  * Allow an alternate dyld to be used for testing.
 301  */
 302
 303 #if DEVELOPMENT || DEBUG
 304 char dyld_alt_path[MAXPATHLEN];
 305 int use_alt_dyld = 0;
 306 #endif
 307
 308 int     cmask = CMASK;
 309 extern int customnbuf;
 310
 311 kern_return_t bsd_autoconf(void);
 312 void bsd_utaskbootstrap(void);
 313
 314 static void parse_bsd_args(void);
 315 #if CONFIG_DEV_KMEM
 316 extern void dev_kmem_init(void);
 317 #endif
 318 extern void time_zone_slock_init(void);
 319 extern void select_waitq_init(void);
 320 static void process_name(const char *, proc_t);
 321
 322 static void setconf(void);
 323
 324 #if SYSV_SHM
 325 extern void sysv_shm_lock_init(void);
 326 #endif
 327 #if SYSV_SEM
 328 extern void sysv_sem_lock_init(void);
 329 #endif
 330 #if SYSV_MSG
 331 extern void sysv_msg_lock_init(void);
 332 #endif
 333
 334 extern void ulock_initialize(void);
 335
 336 #if CONFIG_MACF
 337 #if defined (__i386__) || defined (__x86_64__)
 338 /* MACF policy_check configuration flags; see policy_check.c for details */
 339 int policy_check_flags = 0;
 340
 341 extern int check_policy_init(int);
 342 #endif
 343 #endif  /* CONFIG_MACF */
 344
 345 /* If we are using CONFIG_DTRACE */
 346 #if CONFIG_DTRACE
 347         extern void dtrace_postinit(void);
 348 #endif
 349
 350 /*
 351  * Initialization code.
 352  * Called from cold start routine as
 353  * soon as a stack and segmentation
 354  * have been established.
 355  * Functions:
 356  *      turn on clock
 357  *      hand craft 0th process
 358  *      call all initialization routines
 359  *  hand craft 1st user process
 360  */
 361
 362 /*
 363  *      Sets the name for the given task.
 364  */
 365 static void
 366 process_name(const char *s, proc_t p)
 367 {
 368        strlcpy(p->p_comm, s, sizeof(p->p_comm));
 369        strlcpy(p->p_name, s, sizeof(p->p_name));
 370 }
 371
 372 /* To allow these values to be patched, they're globals here */
 373 #include <machine/vmparam.h>
 374 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ - PAGE_MAX_SIZE };
 375 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 376 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 377
 378 extern thread_t cloneproc(task_t, coalition_t, proc_t, int, int);
 379 extern int      (*mountroot)(void);
 380
 381 lck_grp_t * proc_lck_grp;
 382 lck_grp_t * proc_slock_grp;
 383 lck_grp_t * proc_fdmlock_grp;
 384 lck_grp_t * proc_ucred_mlock_grp;
 385 lck_grp_t * proc_mlock_grp;
 386 lck_grp_attr_t * proc_lck_grp_attr;
 387 lck_attr_t * proc_lck_attr;
 388 lck_mtx_t * proc_list_mlock;
 389 lck_mtx_t * proc_klist_mlock;
 390
 391
 392 extern lck_mtx_t * execargs_cache_lock;
 393
 394 /* hook called after root is mounted XXX temporary hack */
 395 void (*mountroot_post_hook)(void);
 396 void (*unmountroot_pre_hook)(void);
 397
 398 /*
 399  * This function is called before IOKit initialization, so that globals
 400  * like the sysctl tree are initialized before kernel extensions
 401  * are started (since they may want to register sysctls
 402  */
 403 void
 404 bsd_early_init(void)
 405 {
 406         sysctl_early_init();
 407 }
 408
 409 /*
 410  * This function is called very early on in the Mach startup, from the
 411  * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 412  * in the context of the current (startup) task using a call to the
 413  * function kernel_thread_create() to jump into start_kernel_threads().
 414  * Internally, kernel_thread_create() calls thread_create_internal(),
 415  * which calls uthread_alloc().  The function of uthread_alloc() is
 416  * normally to allocate a uthread structure, and fill out the uu_sigmask,
 417  * uu_context fields.  It skips filling these out in the case of the "task"
 418  * being "kernel_task", because the order of operation is inverted.  To
 419  * account for that, we need to manually fill in at least the contents
 420  * of the uu_context.vc_ucred field so that the uthread structure can be
 421  * used like any other.
 422  */
 423
 424 void
 425 bsd_init(void)
 426 {
 427         struct uthread *ut;
 428         unsigned int i;
 429         struct vfs_context context;
 430         kern_return_t   ret;
 431         struct ucred temp_cred;
 432         struct posix_cred temp_pcred;
 433 #if NFSCLIENT || CONFIG_IMAGEBOOT
 434         boolean_t       netboot = FALSE;
 435 #endif
 436
 437 #define bsd_init_kprintf(x...) /* kprintf("bsd_init: " x) */
 438
 439         throttle_init();
 440
 441         printf(copyright);
 442
 443         bsd_init_kprintf("calling kmeminit\n");
 444         kmeminit();
 445
 446         bsd_init_kprintf("calling parse_bsd_args\n");
 447         parse_bsd_args();
 448
 449 #if CONFIG_DEV_KMEM
 450         bsd_init_kprintf("calling dev_kmem_init\n");
 451         dev_kmem_init();
 452 #endif
 453
 454         /* Initialize kauth subsystem before instancing the first credential */
 455         bsd_init_kprintf("calling kauth_init\n");
 456         kauth_init();
 457
 458         /* Initialize process and pgrp structures. */
 459         bsd_init_kprintf("calling procinit\n");
 460         procinit();
 461
 462         /* Initialize the ttys (MUST be before kminit()/bsd_autoconf()!)*/
 463         tty_init();
 464
 465         kernproc = &proc0;      /* implicitly bzero'ed */
 466
 467         /* kernel_task->proc = kernproc; */
 468         set_bsdtask_info(kernel_task,(void *)kernproc);
 469
 470         /* give kernproc a name */
 471         bsd_init_kprintf("calling process_name\n");
 472         process_name("kernel_task", kernproc);
 473
 474         /* allocate proc lock group attribute and group */
 475         bsd_init_kprintf("calling lck_grp_attr_alloc_init\n");
 476         proc_lck_grp_attr= lck_grp_attr_alloc_init();
 477
 478         proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
 479 #if CONFIG_FINE_LOCK_GROUPS
 480         proc_slock_grp = lck_grp_alloc_init("proc-slock",  proc_lck_grp_attr);
 481         proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock",  proc_lck_grp_attr);
 482         proc_ucred_mlock_grp = lck_grp_alloc_init("proc-ucred-mlock",  proc_lck_grp_attr);
 483         proc_mlock_grp = lck_grp_alloc_init("proc-mlock",  proc_lck_grp_attr);
 484 #endif
 485
 486         /* Allocate proc lock attribute */
 487         proc_lck_attr = lck_attr_alloc_init();
 488 #if 0
 489 #if __PROC_INTERNAL_DEBUG
 490         lck_attr_setdebug(proc_lck_attr);
 491 #endif
 492 #endif
 493
 494 #if CONFIG_FINE_LOCK_GROUPS
 495         proc_list_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
 496         proc_klist_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
 497         lck_mtx_init(&kernproc->p_mlock, proc_mlock_grp, proc_lck_attr);
 498         lck_mtx_init(&kernproc->p_fdmlock, proc_fdmlock_grp, proc_lck_attr);
 499         lck_mtx_init(&kernproc->p_ucred_mlock, proc_ucred_mlock_grp, proc_lck_attr);
 500         lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr);
 501 #else
 502         proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 503         proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 504         lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
 505         lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);
 506         lck_mtx_init(&kernproc->p_ucred_mlock, proc_lck_grp, proc_lck_attr);
 507         lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
 508 #endif
 509
 510         assert(bsd_simul_execs != 0);
 511         execargs_cache_lock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 512         execargs_cache_size = bsd_simul_execs;
 513         execargs_free_count = bsd_simul_execs;
 514         execargs_cache = (vm_offset_t *)kalloc(bsd_simul_execs * sizeof(vm_offset_t));
 515         bzero(execargs_cache, bsd_simul_execs * sizeof(vm_offset_t));
 516
 517         if (current_task() != kernel_task)
 518                 printf("bsd_init: We have a problem, "
 519                                 "current task is not kernel task\n");
 520
 521         bsd_init_kprintf("calling get_bsdthread_info\n");
 522         ut = (uthread_t)get_bsdthread_info(current_thread());
 523
 524 #if CONFIG_MACF
 525         /*
 526          * Initialize the MAC Framework
 527          */
 528         mac_policy_initbsd();
 529         kernproc->p_mac_enforce = 0;
 530
 531 #if defined (__i386__) || defined (__x86_64__)
 532         /*
 533          * We currently only support this on i386/x86_64, as that is the
 534          * only lock code we have instrumented so far.
 535          */
 536         check_policy_init(policy_check_flags);
 537 #endif
 538 #endif /* MAC */
 539
 540         /* Initialize System Override call */
 541         init_system_override();
 542
 543         ulock_initialize();
 544
 545         /*
 546          * Create process 0.
 547          */
 548         proc_list_lock();
 549         LIST_INSERT_HEAD(&allproc, kernproc, p_list);
 550         kernproc->p_pgrp = &pgrp0;
 551         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 552         LIST_INIT(&pgrp0.pg_members);
 553 #ifdef CONFIG_FINE_LOCK_GROUPS
 554         lck_mtx_init(&pgrp0.pg_mlock, proc_mlock_grp, proc_lck_attr);
 555 #else
 556         lck_mtx_init(&pgrp0.pg_mlock, proc_lck_grp, proc_lck_attr);
 557 #endif
 558         /* There is no other bsd thread this point and is safe without pgrp lock */
 559         LIST_INSERT_HEAD(&pgrp0.pg_members, kernproc, p_pglist);
 560         kernproc->p_listflag |= P_LIST_INPGRP;
 561         kernproc->p_pgrpid = 0;
 562         kernproc->p_uniqueid = 0;
 563
 564         pgrp0.pg_session = &session0;
 565         pgrp0.pg_membercnt = 1;
 566
 567         session0.s_count = 1;
 568         session0.s_leader = kernproc;
 569         session0.s_listflags = 0;
 570 #ifdef CONFIG_FINE_LOCK_GROUPS
 571         lck_mtx_init(&session0.s_mlock, proc_mlock_grp, proc_lck_attr);
 572 #else
 573         lck_mtx_init(&session0.s_mlock, proc_lck_grp, proc_lck_attr);
 574 #endif
 575         LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
 576         proc_list_unlock();
 577
 578 #if CONFIG_PERSONAS
 579         kernproc->p_persona = NULL;
 580 #endif
 581
 582         kernproc->task = kernel_task;
 583
 584         kernproc->p_stat = SRUN;
 585         kernproc->p_flag = P_SYSTEM;
 586         kernproc->p_lflag = 0;
 587         kernproc->p_ladvflag = 0;
 588
 589 #if defined(__LP64__)
 590         kernproc->p_flag |= P_LP64;
 591 #endif
 592
 593 #if DEVELOPMENT || DEBUG
 594         if (bootarg_disable_aslr)
 595                 kernproc->p_flag |= P_DISABLE_ASLR;
 596 #endif
 597
 598         kernproc->p_nice = NZERO;
 599         kernproc->p_pptr = kernproc;
 600
 601         TAILQ_INIT(&kernproc->p_uthlist);
 602         TAILQ_INSERT_TAIL(&kernproc->p_uthlist, ut, uu_list);
 603
 604         kernproc->sigwait = FALSE;
 605         kernproc->sigwait_thread = THREAD_NULL;
 606         kernproc->exit_thread = THREAD_NULL;
 607         kernproc->p_csflags = CS_VALID;
 608
 609         /*
 610          * Create credential.  This also Initializes the audit information.
 611          */
 612         bsd_init_kprintf("calling bzero\n");
 613         bzero(&temp_cred, sizeof(temp_cred));
 614         bzero(&temp_pcred, sizeof(temp_pcred));
 615         temp_pcred.cr_ngroups = 1;
 616         /* kern_proc, shouldn't call up to DS for group membership */
 617         temp_pcred.cr_flags = CRF_NOMEMBERD;
 618         temp_cred.cr_audit.as_aia_p = audit_default_aia_p;
 619
 620         bsd_init_kprintf("calling kauth_cred_create\n");
 621         /*
 622          * We have to label the temp cred before we create from it to
 623          * properly set cr_ngroups, or the create will fail.
 624          */
 625         posix_cred_label(&temp_cred, &temp_pcred);
 626         kernproc->p_ucred = kauth_cred_create(&temp_cred);
 627
 628         /* update cred on proc */
 629         PROC_UPDATE_CREDS_ONPROC(kernproc);
 630
 631         /* give the (already exisiting) initial thread a reference on it */
 632         bsd_init_kprintf("calling kauth_cred_ref\n");
 633         kauth_cred_ref(kernproc->p_ucred);
 634         ut->uu_context.vc_ucred = kernproc->p_ucred;
 635         ut->uu_context.vc_thread = current_thread();
 636
 637         TAILQ_INIT(&kernproc->p_aio_activeq);
 638         TAILQ_INIT(&kernproc->p_aio_doneq);
 639         kernproc->p_aio_total_count = 0;
 640         kernproc->p_aio_active_count = 0;
 641
 642         bsd_init_kprintf("calling file_lock_init\n");
 643         file_lock_init();
 644
 645 #if CONFIG_MACF
 646         mac_cred_label_associate_kernel(kernproc->p_ucred);
 647 #endif
 648
 649         /* Create the file descriptor table. */
 650         kernproc->p_fd = &filedesc0;
 651         filedesc0.fd_cmask = cmask;
 652         filedesc0.fd_knlistsize = -1;
 653         filedesc0.fd_knlist = NULL;
 654         filedesc0.fd_knhash = NULL;
 655         filedesc0.fd_knhashmask = 0;
 656
 657         /* Create the limits structures. */
 658         kernproc->p_limit = &limit0;
 659         for (i = 0; i < sizeof(kernproc->p_rlimit)/sizeof(kernproc->p_rlimit[0]); i++)
 660                 limit0.pl_rlimit[i].rlim_cur =
 661                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 662         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 663         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = maxprocperuid;
 664         limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 665         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 666         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 667         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 668         limit0.pl_refcnt = 1;
 669
 670         kernproc->p_stats = &pstats0;
 671         kernproc->p_sigacts = &sigacts0;
 672
 673         /*
 674          * Charge root for one process: launchd.
 675          */
 676         bsd_init_kprintf("calling chgproccnt\n");
 677         (void)chgproccnt(0, 1);
 678
 679         /*
 680          *      Allocate a kernel submap for pageable memory
 681          *      for temporary copying (execve()).
 682          */
 683         {
 684                 vm_offset_t     minimum;
 685
 686                 bsd_init_kprintf("calling kmem_suballoc\n");
 687                 assert(bsd_pageable_map_size != 0);
 688                 ret = kmem_suballoc(kernel_map,
 689                                 &minimum,
 690                                 (vm_size_t)bsd_pageable_map_size,
 691                                 TRUE,
 692                                 VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_KERN_MEMORY_BSD),
 693                                 &bsd_pageable_map);
 694                 if (ret != KERN_SUCCESS)
 695                         panic("bsd_init: Failed to allocate bsd pageable map");
 696         }
 697
 698         /*
 699          * Initialize buffers and hash links for buffers
 700          *
 701          * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
 702          *              happen after a credential has been associated with
 703          *              the kernel task.
 704          */
 705         bsd_init_kprintf("calling bsd_bufferinit\n");
 706         bsd_bufferinit();
 707
 708         /* Initialize the execve() semaphore */
 709         bsd_init_kprintf("calling semaphore_create\n");
 710
 711         if (ret != KERN_SUCCESS)
 712                 panic("bsd_init: Failed to create execve semaphore");
 713
 714         /*
 715          * Initialize the calendar.
 716          */
 717         bsd_init_kprintf("calling IOKitInitializeTime\n");
 718         IOKitInitializeTime();
 719
 720         bsd_init_kprintf("calling ubc_init\n");
 721         ubc_init();
 722
 723         /* Initialize the file systems. */
 724         bsd_init_kprintf("calling vfsinit\n");
 725         vfsinit();
 726
 727 #if CONFIG_PROC_UUID_POLICY
 728         /* Initial proc_uuid_policy subsystem */
 729         bsd_init_kprintf("calling proc_uuid_policy_init()\n");
 730         proc_uuid_policy_init();
 731 #endif
 732
 733 #if SOCKETS
 734         /* Initialize per-CPU cache allocator */
 735         mcache_init();
 736
 737         /* Initialize mbuf's. */
 738         bsd_init_kprintf("calling mbinit\n");
 739         mbinit();
 740         net_str_id_init(); /* for mbuf tags */
 741 #endif /* SOCKETS */
 742
 743         /*
 744          * Initializes security event auditing.
 745          * XXX: Should/could this occur later?
 746          */
 747 #if CONFIG_AUDIT
 748         bsd_init_kprintf("calling audit_init\n");
 749         audit_init();
 750 #endif
 751
 752         /* Initialize kqueues */
 753         bsd_init_kprintf("calling knote_init\n");
 754         knote_init();
 755
 756         /* Initialize for async IO */
 757         bsd_init_kprintf("calling aio_init\n");
 758         aio_init();
 759
 760         /* Initialize pipes */
 761         bsd_init_kprintf("calling pipeinit\n");
 762         pipeinit();
 763
 764         /* Initialize SysV shm subsystem locks; the subsystem proper is
 765          * initialized through a sysctl.
 766          */
 767 #if SYSV_SHM
 768         bsd_init_kprintf("calling sysv_shm_lock_init\n");
 769         sysv_shm_lock_init();
 770 #endif
 771 #if SYSV_SEM
 772         bsd_init_kprintf("calling sysv_sem_lock_init\n");
 773         sysv_sem_lock_init();
 774 #endif
 775 #if SYSV_MSG
 776         bsd_init_kprintf("sysv_msg_lock_init\n");
 777         sysv_msg_lock_init();
 778 #endif
 779         bsd_init_kprintf("calling pshm_lock_init\n");
 780         pshm_lock_init();
 781         bsd_init_kprintf("calling psem_lock_init\n");
 782         psem_lock_init();
 783
 784         pthread_init();
 785         /* POSIX Shm and Sem */
 786         bsd_init_kprintf("calling pshm_cache_init\n");
 787         pshm_cache_init();
 788         bsd_init_kprintf("calling psem_cache_init\n");
 789         psem_cache_init();
 790         bsd_init_kprintf("calling time_zone_slock_init\n");
 791         time_zone_slock_init();
 792         bsd_init_kprintf("calling select_waitq_init\n");
 793         select_waitq_init();
 794
 795         /*
 796          * Initialize protocols.  Block reception of incoming packets
 797          * until everything is ready.
 798          */
 799 #if NETWORKING
 800         bsd_init_kprintf("calling dlil_init\n");
 801         dlil_init();
 802         bsd_init_kprintf("calling proto_kpi_init\n");
 803         proto_kpi_init();
 804 #endif /* NETWORKING */
 805 #if SOCKETS
 806         bsd_init_kprintf("calling socketinit\n");
 807         socketinit();
 808         bsd_init_kprintf("calling domaininit\n");
 809         domaininit();
 810         iptap_init();
 811 #if FLOW_DIVERT
 812         flow_divert_init();
 813 #endif  /* FLOW_DIVERT */
 814 #endif /* SOCKETS */
 815
 816         kernproc->p_fd->fd_cdir = NULL;
 817         kernproc->p_fd->fd_rdir = NULL;
 818
 819 #if CONFIG_FREEZE
 820 #ifndef CONFIG_MEMORYSTATUS
 821     #error "CONFIG_FREEZE defined without matching CONFIG_MEMORYSTATUS"
 822 #endif
 823         /* Initialise background freezing */
 824         bsd_init_kprintf("calling memorystatus_freeze_init\n");
 825         memorystatus_freeze_init();
 826 #endif
 827
 828 #if CONFIG_MEMORYSTATUS
 829         /* Initialize kernel memory status notifications */
 830         bsd_init_kprintf("calling memorystatus_init\n");
 831         memorystatus_init();
 832 #endif /* CONFIG_MEMORYSTATUS */
 833
 834         bsd_init_kprintf("calling acct_init\n");
 835         acct_init();
 836
 837 #ifdef GPROF
 838         /* Initialize kernel profiling. */
 839         kmstartup();
 840 #endif
 841
 842         bsd_init_kprintf("calling sysctl_mib_init\n");
 843         sysctl_mib_init()
 844
 845         bsd_init_kprintf("calling bsd_autoconf\n");
 846         bsd_autoconf();
 847
 848         bsd_init_kprintf("calling os_reason_init\n");
 849         os_reason_init();
 850
 851 #if CONFIG_DTRACE
 852         dtrace_postinit();
 853 #endif
 854
 855         /*
 856          * We attach the loopback interface *way* down here to ensure
 857          * it happens after autoconf(), otherwise it becomes the
 858          * "primary" interface.
 859          */
 860 #include <loop.h>
 861 #if NLOOP > 0
 862         bsd_init_kprintf("calling loopattach\n");
 863         loopattach();                   /* XXX */
 864 #endif
 865 #if NGIF
 866         /* Initialize gif interface (after lo0) */
 867         gif_init();
 868 #endif
 869
 870 #if PFLOG
 871         /* Initialize packet filter log interface */
 872         pfloginit();
 873 #endif /* PFLOG */
 874
 875 #if NETHER > 0
 876         /* Register the built-in dlil ethernet interface family */
 877         bsd_init_kprintf("calling ether_family_init\n");
 878         ether_family_init();
 879 #endif /* ETHER */
 880
 881 #if NETWORKING
 882         /* Call any kext code that wants to run just after network init */
 883         bsd_init_kprintf("calling net_init_run\n");
 884         net_init_run();
 885
 886 #if CONTENT_FILTER
 887         cfil_init();
 888 #endif
 889
 890 #if PACKET_MANGLER
 891         pkt_mnglr_init();
 892 #endif
 893
 894 #if NECP
 895         /* Initialize Network Extension Control Policies */
 896         necp_init();
 897 #endif
 898
 899         netagent_init();
 900
 901         /* register user tunnel kernel control handler */
 902         utun_register_control();
 903 #if IPSEC
 904         ipsec_register_control();
 905 #endif /* IPSEC */
 906         netsrc_init();
 907         nstat_init();
 908         tcp_cc_init();
 909 #if MPTCP
 910         mptcp_control_register();
 911 #endif /* MPTCP */
 912 #endif /* NETWORKING */
 913
 914         bsd_init_kprintf("calling vnode_pager_bootstrap\n");
 915         vnode_pager_bootstrap();
 916
 917         bsd_init_kprintf("calling inittodr\n");
 918         inittodr(0);
 919
 920         /* Mount the root file system. */
 921         while( TRUE) {
 922                 int err;
 923
 924                 bsd_init_kprintf("calling setconf\n");
 925                 setconf();
 926 #if NFSCLIENT
 927                 netboot = (mountroot == netboot_mountroot);
 928 #endif
 929
 930                 bsd_init_kprintf("vfs_mountroot\n");
 931                 if (0 == (err = vfs_mountroot()))
 932                         break;
 933                 rootdevice[0] = '\0';
 934 #if NFSCLIENT
 935                 if (netboot) {
 936                         PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
 937                         vc_progress_set(FALSE, 0);
 938                         for (i=1; 1; i*=2) {
 939                                 printf("bsd_init: failed to mount network root, error %d, %s\n",
 940                                         err, PE_boot_args());
 941                                 printf("We are hanging here...\n");
 942                                 IOSleep(i*60*1000);
 943                         }
 944                         /*NOTREACHED*/
 945                 }
 946 #endif
 947                 printf("cannot mount root, errno = %d\n", err);
 948                 boothowto |= RB_ASKNAME;
 949         }
 950
 951         IOSecureBSDRoot(rootdevice);
 952
 953         context.vc_thread = current_thread();
 954         context.vc_ucred = kernproc->p_ucred;
 955         mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
 956
 957         bsd_init_kprintf("calling VFS_ROOT\n");
 958         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 959         if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
 960                 panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
 961         rootvnode->v_flag |= VROOT;
 962         (void)vnode_ref(rootvnode);
 963         (void)vnode_put(rootvnode);
 964         filedesc0.fd_cdir = rootvnode;
 965
 966 #if NFSCLIENT
 967         if (netboot) {
 968                 int err;
 969
 970                 netboot = TRUE;
 971                 /* post mount setup */
 972                 if ((err = netboot_setup()) != 0) {
 973                         PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
 974                         vc_progress_set(FALSE, 0);
 975                         for (i=1; 1; i*=2) {
 976                                 printf("bsd_init: NetBoot could not find root, error %d: %s\n",
 977                                         err, PE_boot_args());
 978                                 printf("We are hanging here...\n");
 979                                 IOSleep(i*60*1000);
 980                         }
 981                         /*NOTREACHED*/
 982                 }
 983         }
 984 #endif
 985
 986
 987 #if CONFIG_IMAGEBOOT
 988         /*
 989          * See if a system disk image is present. If so, mount it and
 990          * switch the root vnode to point to it
 991          */
 992         if (netboot == FALSE && imageboot_needed()) {
 993                 /*
 994                  * An image was found.  No turning back: we're booted
 995                  * with a kernel from the disk image.
 996                  */
 997                 imageboot_setup();
 998         }
 999 #endif /* CONFIG_IMAGEBOOT */
1000
1001         /* set initial time; all other resource data is  already zero'ed */
1002         microtime_with_abstime(&kernproc->p_start, &kernproc->p_stats->ps_start);
1003
1004 #if DEVFS
1005         {
1006             char mounthere[] = "/dev";  /* !const because of internal casting */
1007
1008             bsd_init_kprintf("calling devfs_kernel_mount\n");
1009             devfs_kernel_mount(mounthere);
1010         }
1011 #endif /* DEVFS */
1012
1013         /* Initialize signal state for process 0. */
1014         bsd_init_kprintf("calling siginit\n");
1015         siginit(kernproc);
1016
1017         bsd_init_kprintf("calling bsd_utaskbootstrap\n");
1018         bsd_utaskbootstrap();
1019
1020         pal_kernel_announce();
1021
1022         bsd_init_kprintf("calling mountroot_post_hook\n");
1023
1024         /* invoke post-root-mount hook */
1025         if (mountroot_post_hook != NULL)
1026                 mountroot_post_hook();
1027
1028 #if 0 /* not yet */
1029         consider_zone_gc();
1030 #endif
1031
1032         bsd_init_kprintf("done\n");
1033 }
1034
1035 void
1036 bsdinit_task(void)
1037 {
1038         proc_t p = current_proc();
1039         struct uthread *ut;
1040         thread_t thread;
1041
1042         process_name("init", p);
1043
1044         ux_handler_init();
1045
1046         thread = current_thread();
1047         (void) host_set_exception_ports(host_priv_self(),
1048                                         EXC_MASK_ALL & ~(EXC_MASK_RPC_ALERT),//pilotfish (shark) needs this port
1049                                         (mach_port_t) ux_exception_port,
1050                                         EXCEPTION_DEFAULT| MACH_EXCEPTION_CODES,
1051                                         0);
1052
1053         ut = (uthread_t)get_bsdthread_info(thread);
1054
1055 #if CONFIG_MACF
1056         mac_cred_label_associate_user(p->p_ucred);
1057 #endif
1058
1059
1060         load_init_program(p);
1061         lock_trace = 1;
1062 }
1063
1064 kern_return_t
1065 bsd_autoconf(void)
1066 {
1067         kprintf("bsd_autoconf: calling kminit\n");
1068         kminit();
1069
1070         /*
1071          * Early startup for bsd pseudodevices.
1072          */
1073         {
1074             struct pseudo_init *pi;
1075
1076             for (pi = pseudo_inits; pi->ps_func; pi++)
1077                 (*pi->ps_func) (pi->ps_count);
1078         }
1079
1080         return( IOKitBSDInit());
1081 }
1082
1083
1084 #include <sys/disklabel.h>  /* for MAXPARTITIONS */
1085
1086 static void
1087 setconf(void)
1088 {
1089         u_int32_t       flags;
1090         kern_return_t   err;
1091
1092         err = IOFindBSDRoot(rootdevice, sizeof(rootdevice), &rootdev, &flags);
1093         if( err) {
1094                 printf("setconf: IOFindBSDRoot returned an error (%d);"
1095                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
1096                 rootdev = makedev( 6, 0 );
1097                 strlcpy(rootdevice, "sd0a", sizeof(rootdevice));
1098                 flags = 0;
1099         }
1100
1101 #if NFSCLIENT
1102         if( flags & 1 ) {
1103                 /* network device */
1104                 mountroot = netboot_mountroot;
1105         } else {
1106 #endif
1107                 /* otherwise have vfs determine root filesystem */
1108                 mountroot = NULL;
1109 #if NFSCLIENT
1110         }
1111 #endif
1112
1113 }
1114
1115 void
1116 bsd_utaskbootstrap(void)
1117 {
1118         thread_t thread;
1119         struct uthread *ut;
1120
1121         /*
1122          * Clone the bootstrap process from the kernel process, without
1123          * inheriting either task characteristics or memory from the kernel;
1124          */
1125         thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE);
1126
1127         /* Hold the reference as it will be dropped during shutdown */
1128         initproc = proc_find(1);
1129 #if __PROC_INTERNAL_DEBUG
1130         if (initproc == PROC_NULL)
1131                 panic("bsd_utaskbootstrap: initproc not set\n");
1132 #endif
1133         /*
1134          * Since we aren't going back out the normal way to our parent,
1135          * we have to drop the transition locks explicitly.
1136          */
1137         proc_signalend(initproc, 0);
1138         proc_transend(initproc, 0);
1139
1140         ut = (struct uthread *)get_bsdthread_info(thread);
1141         ut->uu_sigmask = 0;
1142         act_set_astbsd(thread);
1143         task_clear_return_wait(get_threadtask(thread));
1144 }
1145
1146 static void
1147 parse_bsd_args(void)
1148 {
1149         char namep[16];
1150         int msgbuf;
1151
1152         if ( PE_parse_boot_argn("-s", namep, sizeof (namep)))
1153                 boothowto |= RB_SINGLE;
1154
1155         if (PE_parse_boot_argn("-b", namep, sizeof (namep)))
1156                 boothowto |= RB_NOBOOTRC;
1157
1158         if (PE_parse_boot_argn("-x", namep, sizeof (namep))) /* safe boot */
1159                 boothowto |= RB_SAFEBOOT;
1160
1161         if (PE_parse_boot_argn("-minimalboot", namep, sizeof(namep))) {
1162                 /*
1163                  * -minimalboot indicates that we want userspace to be bootstrapped to a
1164                  * minimal environment.  What constitutes minimal is up to the bootstrap
1165                  * process.
1166                  */
1167                 minimalboot = 1;
1168         }
1169
1170
1171         /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */
1172         if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof (namep)))
1173                 bootarg_vnode_cache_defeat = 1;
1174
1175 #if DEVELOPMENT || DEBUG
1176         if (PE_parse_boot_argn("-disable_aslr", namep, sizeof (namep)))
1177                 bootarg_disable_aslr = 1;
1178 #endif
1179
1180         PE_parse_boot_argn("ncl", &ncl, sizeof (ncl));
1181         if (PE_parse_boot_argn("nbuf", &max_nbuf_headers,
1182                                 sizeof (max_nbuf_headers))) {
1183                 customnbuf = 1;
1184         }
1185
1186 #if CONFIG_MACF
1187 #if defined (__i386__) || defined (__x86_64__)
1188         PE_parse_boot_argn("policy_check", &policy_check_flags, sizeof (policy_check_flags));
1189 #endif
1190 #endif  /* CONFIG_MACF */
1191
1192         if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof (msgbuf))) {
1193                 log_setsize(msgbuf);
1194                 oslog_setsize(msgbuf);
1195         }
1196
1197         if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) {
1198                 nc_disabled = 1;
1199         }
1200
1201 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
1202         if (PE_parse_boot_argn("-no_vnode_jetsam", namep, sizeof(namep)))
1203                  bootarg_no_vnode_jetsam = 1;
1204 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
1205
1206
1207
1208 #if PROC_REF_DEBUG
1209         if (PE_parse_boot_argn("-disable_procref_tracking", namep, sizeof(namep))) {
1210                 proc_ref_tracking_disabled = 1;
1211         }
1212 #endif
1213
1214 #if OS_REASON_DEBUG
1215         if (PE_parse_boot_argn("-disable_osreason_debug", namep, sizeof(namep))) {
1216                 os_reason_debug_disabled = 1;
1217         }
1218 #endif
1219
1220         PE_parse_boot_argn("sigrestrict", &sigrestrict_arg, sizeof(sigrestrict_arg));
1221
1222 #if DEVELOPMENT|| DEBUG
1223         if (PE_parse_boot_argn("-no_sigsys", namep, sizeof(namep))) {
1224                 send_sigsys = false;
1225         }
1226 #endif
1227
1228 #if (DEVELOPMENT|| DEBUG)
1229         if (PE_parse_boot_argn("alt-dyld", dyld_alt_path, sizeof(dyld_alt_path))) {
1230         if (strlen(dyld_alt_path) > 0) {
1231             use_alt_dyld = 1;
1232         }
1233         }
1234 #endif
1235 }
1236
1237 void
1238 bsd_exec_setup(int scale)
1239 {
1240
1241         switch (scale) {
1242                 case 0:
1243                 case 1:
1244                         bsd_simul_execs = BSD_SIMUL_EXECS;
1245                         break;
1246                 case 2:
1247                 case 3:
1248                         bsd_simul_execs = 65;
1249                         break;
1250                 case 4:
1251                 case 5:
1252                         bsd_simul_execs = 129;
1253                         break;
1254                 case 6:
1255                 case 7:
1256                         bsd_simul_execs = 257;
1257                         break;
1258                 default:
1259                         bsd_simul_execs = 513;
1260                         break;
1261
1262         }
1263         bsd_pageable_map_size = (bsd_simul_execs * BSD_PAGEABLE_SIZE_PER_EXEC);
1264 }
1265
1266 #if !NFSCLIENT
1267 int
1268 netboot_root(void);
1269
1270 int
1271 netboot_root(void)
1272 {
1273         return(0);
1274 }
1275 #endif