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/monotonic.h>
 123 #include <sys/reason.h>
 124
 125 #include <mach/mach_types.h>
 126 #include <mach/vm_prot.h>
 127 #include <mach/semaphore.h>
 128 #include <mach/sync_policy.h>
 129 #include <kern/clock.h>
 130 #include <mach/kern_return.h>
 131 #include <mach/thread_act.h>            /* for thread_resume() */
 132 #include <mach/task.h>                  /* for task_set_exception_ports() */
 133 #include <sys/ux_exception.h>           /* for ux_handler() */
 134 #include <sys/ubc_internal.h>           /* for ubc_init() */
 135 #include <sys/mcache.h>                 /* for mcache_init() */
 136 #include <sys/mbuf.h>                   /* for mbinit() */
 137 #include <sys/event.h>                  /* for knote_init() */
 138 #include <sys/eventhandler.h>           /* for eventhandler_init() */
 139 #include <sys/kern_memorystatus.h>      /* for memorystatus_init() */
 140 #include <sys/aio_kern.h>               /* for aio_init() */
 141 #include <sys/semaphore.h>              /* for psem_cache_init() */
 142 #include <net/dlil.h>                   /* for dlil_init() */
 143 #include <net/kpi_protocol.h>           /* for proto_kpi_init() */
 144 #include <net/iptap.h>                  /* for iptap_init() */
 145 #include <sys/pipe.h>                   /* for pipeinit() */
 146 #include <sys/socketvar.h>              /* for socketinit() */
 147 #include <sys/protosw.h>                /* for domaininit() */
 148 #include <kern/sched_prim.h>            /* for thread_wakeup() */
 149 #include <net/if_ether.h>               /* for ether_family_init() */
 150 #include <net/if_gif.h>                 /* for gif_init() */
 151 #include <vm/vm_protos.h>               /* for vnode_pager_bootstrap() */
 152 #include <miscfs/devfs/devfsdefs.h>     /* for devfs_kernel_mount() */
 153 #include <mach/host_priv.h>             /* for host_set_exception_ports() */
 154 #include <kern/host.h>                  /* for host_priv_self() */
 155 #include <vm/vm_kern.h>                 /* for kmem_suballoc() */
 156 #include <sys/semaphore.h>              /* for psem_lock_init() */
 157 #include <sys/msgbuf.h>                 /* for log_setsize() */
 158 #include <sys/tty.h>                    /* for tty_init() */
 159 #include <sys/proc_uuid_policy.h>       /* proc_uuid_policy_init() */
 160 #include <netinet/flow_divert.h>        /* flow_divert_init() */
 161 #include <net/content_filter.h>         /* for cfil_init() */
 162 #include <net/necp.h>                   /* for necp_init() */
 163 #include <net/network_agent.h>          /* for netagent_init() */
 164 #include <net/packet_mangler.h>         /* for pkt_mnglr_init() */
 165 #include <net/if_utun.h>                /* for utun_register_control() */
 166 #include <net/if_ipsec.h>               /* for ipsec_register_control() */
 167 #include <net/net_str_id.h>             /* for net_str_id_init() */
 168 #include <net/netsrc.h>                 /* for netsrc_init() */
 169 #include <net/ntstat.h>                 /* for nstat_init() */
 170 #include <netinet/tcp_cc.h>                     /* for tcp_cc_init() */
 171 #include <netinet/mptcp_var.h>          /* for mptcp_control_register() */
 172 #include <net/nwk_wq.h>                 /* for nwk_wq_init */
 173 #include <kern/assert.h>                /* for assert() */
 174 #include <sys/kern_overrides.h>         /* for init_system_override() */
 175
 176 #include <net/init.h>
 177
 178 #if CONFIG_MACF
 179 #include <security/mac_framework.h>
 180 #include <security/mac_internal.h>      /* mac_init_bsd() */
 181 #include <security/mac_mach_internal.h> /* mac_update_task_label() */
 182 #endif
 183
 184 #include <machine/exec.h>
 185
 186 #if NFSCLIENT
 187 #include <sys/netboot.h>
 188 #endif
 189
 190 #if CONFIG_IMAGEBOOT
 191 #include <sys/imageboot.h>
 192 #endif
 193
 194 #if PFLOG
 195 #include <net/if_pflog.h>
 196 #endif
 197
 198
 199 #include <pexpert/pexpert.h>
 200 #include <machine/pal_routines.h>
 201 #include <console/video_console.h>
 202
 203
 204 void * get_user_regs(thread_t);         /* XXX kludge for <machine/thread.h> */
 205 void IOKitInitializeTime(void);         /* XXX */
 206 void IOSleep(unsigned int);             /* XXX */
 207 void loopattach(void);                  /* XXX */
 208
 209 const char    copyright[] =
 210 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
 211 "The Regents of the University of California. "
 212 "All rights reserved.\n\n";
 213
 214 /* Components of the first process -- never freed. */
 215 struct  proc proc0;
 216 struct  session session0;
 217 struct  pgrp pgrp0;
 218 struct  filedesc filedesc0;
 219 struct  plimit limit0;
 220 struct  pstats pstats0;
 221 struct  sigacts sigacts0;
 222 proc_t kernproc;
 223 proc_t initproc;
 224
 225 long tk_cancc;
 226 long tk_nin;
 227 long tk_nout;
 228 long tk_rawcc;
 229
 230 int lock_trace = 0;
 231 /* Global variables to make pstat happy. We do swapping differently */
 232 int nswdev, nswap;
 233 int nswapmap;
 234 void *swapmap;
 235 struct swdevt swdevt[1];
 236
 237 dev_t   rootdev;                /* device of the root */
 238 dev_t   dumpdev;                /* device to take dumps on */
 239 long    dumplo;                 /* offset into dumpdev */
 240 long    hostid;
 241 char    hostname[MAXHOSTNAMELEN];
 242 int             hostnamelen;
 243 char    domainname[MAXDOMNAMELEN];
 244 int             domainnamelen;
 245
 246 char rootdevice[DEVMAXNAMESIZE];
 247
 248 #if  KMEMSTATS
 249 struct  kmemstats kmemstats[M_LAST];
 250 #endif
 251
 252 struct  vnode *rootvp;
 253 int boothowto = RB_DEBUG;
 254 int minimalboot = 0;
 255 #if CONFIG_EMBEDDED
 256 int darkboot = 0;
 257 #endif
 258
 259 #if PROC_REF_DEBUG
 260 __private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */
 261 #endif
 262
 263 #if OS_REASON_DEBUG
 264 __private_extern__ int os_reason_debug_disabled = 0; /* disable asserts for when we fail to allocate OS reasons */
 265 #endif
 266
 267 extern kern_return_t IOFindBSDRoot(char *, unsigned int, dev_t *, u_int32_t *);
 268 extern void IOSecureBSDRoot(const char * rootName);
 269 extern kern_return_t IOKitBSDInit(void );
 270 extern void kminit(void);
 271 extern void file_lock_init(void);
 272 extern void kmeminit(void);
 273 extern void bsd_bufferinit(void);
 274 extern void oslog_setsize(int size);
 275 extern void throttle_init(void);
 276 extern void acct_init(void);
 277
 278 extern int serverperfmode;
 279 extern int ncl;
 280
 281 vm_map_t        bsd_pageable_map;
 282 vm_map_t        mb_map;
 283
 284 static  int bsd_simul_execs;
 285 static int bsd_pageable_map_size;
 286 __private_extern__ int execargs_cache_size = 0;
 287 __private_extern__ int execargs_free_count = 0;
 288 __private_extern__ vm_offset_t * execargs_cache = NULL;
 289
 290 void bsd_exec_setup(int);
 291
 292 #if __arm64__
 293 __private_extern__ int bootarg_no64exec = 0;
 294 #endif
 295 __private_extern__ int bootarg_vnode_cache_defeat = 0;
 296
 297 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
 298 __private_extern__ int bootarg_no_vnode_jetsam = 0;
 299 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
 300
 301 /*
 302  * Prevent kernel-based ASLR from being used, for testing.
 303  */
 304 #if DEVELOPMENT || DEBUG
 305 __private_extern__ int bootarg_disable_aslr = 0;
 306 #endif
 307
 308 /*
 309  * Allow an alternate dyld to be used for testing.
 310  */
 311
 312 #if DEVELOPMENT || DEBUG
 313 char dyld_alt_path[MAXPATHLEN];
 314 int use_alt_dyld = 0;
 315 #endif
 316
 317 int     cmask = CMASK;
 318 extern int customnbuf;
 319
 320 kern_return_t bsd_autoconf(void);
 321 void bsd_utaskbootstrap(void);
 322
 323 static void parse_bsd_args(void);
 324 #if CONFIG_DEV_KMEM
 325 extern void dev_kmem_init(void);
 326 #endif
 327 extern void time_zone_slock_init(void);
 328 extern void select_waitq_init(void);
 329 static void process_name(const char *, proc_t);
 330
 331 static void setconf(void);
 332
 333 #if SYSV_SHM
 334 extern void sysv_shm_lock_init(void);
 335 #endif
 336 #if SYSV_SEM
 337 extern void sysv_sem_lock_init(void);
 338 #endif
 339 #if SYSV_MSG
 340 extern void sysv_msg_lock_init(void);
 341 #endif
 342
 343 extern void ulock_initialize(void);
 344
 345 #if CONFIG_MACF
 346 #if defined (__i386__) || defined (__x86_64__)
 347 /* MACF policy_check configuration flags; see policy_check.c for details */
 348 int policy_check_flags = 0;
 349
 350 extern int check_policy_init(int);
 351 #endif
 352 #endif  /* CONFIG_MACF */
 353
 354 /* If we are using CONFIG_DTRACE */
 355 #if CONFIG_DTRACE
 356         extern void dtrace_postinit(void);
 357 #endif
 358
 359 /*
 360  * Initialization code.
 361  * Called from cold start routine as
 362  * soon as a stack and segmentation
 363  * have been established.
 364  * Functions:
 365  *      turn on clock
 366  *      hand craft 0th process
 367  *      call all initialization routines
 368  *  hand craft 1st user process
 369  */
 370
 371 /*
 372  *      Sets the name for the given task.
 373  */
 374 static void
 375 process_name(const char *s, proc_t p)
 376 {
 377        strlcpy(p->p_comm, s, sizeof(p->p_comm));
 378        strlcpy(p->p_name, s, sizeof(p->p_name));
 379 }
 380
 381 /* To allow these values to be patched, they're globals here */
 382 #include <machine/vmparam.h>
 383 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ - PAGE_MAX_SIZE };
 384 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 385 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 386
 387 extern thread_t cloneproc(task_t, coalition_t, proc_t, int, int);
 388 extern int      (*mountroot)(void);
 389
 390 lck_grp_t * proc_lck_grp;
 391 lck_grp_t * proc_slock_grp;
 392 lck_grp_t * proc_fdmlock_grp;
 393 lck_grp_t * proc_kqhashlock_grp;
 394 lck_grp_t * proc_knhashlock_grp;
 395 lck_grp_t * proc_ucred_mlock_grp;
 396 lck_grp_t * proc_mlock_grp;
 397 lck_grp_attr_t * proc_lck_grp_attr;
 398 lck_attr_t * proc_lck_attr;
 399 lck_mtx_t * proc_list_mlock;
 400 lck_mtx_t * proc_klist_mlock;
 401
 402
 403 extern lck_mtx_t * execargs_cache_lock;
 404
 405 /* hook called after root is mounted XXX temporary hack */
 406 void (*mountroot_post_hook)(void);
 407 void (*unmountroot_pre_hook)(void);
 408
 409 /*
 410  * This function is called before IOKit initialization, so that globals
 411  * like the sysctl tree are initialized before kernel extensions
 412  * are started (since they may want to register sysctls
 413  */
 414 void
 415 bsd_early_init(void)
 416 {
 417         sysctl_early_init();
 418 }
 419
 420 /*
 421  * This function is called very early on in the Mach startup, from the
 422  * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 423  * in the context of the current (startup) task using a call to the
 424  * function kernel_thread_create() to jump into start_kernel_threads().
 425  * Internally, kernel_thread_create() calls thread_create_internal(),
 426  * which calls uthread_alloc().  The function of uthread_alloc() is
 427  * normally to allocate a uthread structure, and fill out the uu_sigmask,
 428  * uu_context fields.  It skips filling these out in the case of the "task"
 429  * being "kernel_task", because the order of operation is inverted.  To
 430  * account for that, we need to manually fill in at least the contents
 431  * of the uu_context.vc_ucred field so that the uthread structure can be
 432  * used like any other.
 433  */
 434
 435 void
 436 bsd_init(void)
 437 {
 438         struct uthread *ut;
 439         unsigned int i;
 440         struct vfs_context context;
 441         kern_return_t   ret;
 442         struct ucred temp_cred;
 443         struct posix_cred temp_pcred;
 444 #if NFSCLIENT || CONFIG_IMAGEBOOT
 445         boolean_t       netboot = FALSE;
 446 #endif
 447
 448 #define bsd_init_kprintf(x...) /* kprintf("bsd_init: " x) */
 449
 450         throttle_init();
 451
 452         printf(copyright);
 453
 454         bsd_init_kprintf("calling kmeminit\n");
 455         kmeminit();
 456
 457         bsd_init_kprintf("calling parse_bsd_args\n");
 458         parse_bsd_args();
 459
 460 #if CONFIG_DEV_KMEM
 461         bsd_init_kprintf("calling dev_kmem_init\n");
 462         dev_kmem_init();
 463 #endif
 464
 465         /* Initialize kauth subsystem before instancing the first credential */
 466         bsd_init_kprintf("calling kauth_init\n");
 467         kauth_init();
 468
 469         /* Initialize process and pgrp structures. */
 470         bsd_init_kprintf("calling procinit\n");
 471         procinit();
 472
 473         /* Initialize the ttys (MUST be before kminit()/bsd_autoconf()!)*/
 474         tty_init();
 475
 476         kernproc = &proc0;      /* implicitly bzero'ed */
 477
 478         /* kernel_task->proc = kernproc; */
 479         set_bsdtask_info(kernel_task,(void *)kernproc);
 480
 481         /* give kernproc a name */
 482         bsd_init_kprintf("calling process_name\n");
 483         process_name("kernel_task", kernproc);
 484
 485         /* allocate proc lock group attribute and group */
 486         bsd_init_kprintf("calling lck_grp_attr_alloc_init\n");
 487         proc_lck_grp_attr= lck_grp_attr_alloc_init();
 488
 489         proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
 490
 491 #if CONFIG_FINE_LOCK_GROUPS
 492         proc_slock_grp = lck_grp_alloc_init("proc-slock",  proc_lck_grp_attr);
 493         proc_ucred_mlock_grp = lck_grp_alloc_init("proc-ucred-mlock",  proc_lck_grp_attr);
 494         proc_mlock_grp = lck_grp_alloc_init("proc-mlock",  proc_lck_grp_attr);
 495         proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock",  proc_lck_grp_attr);
 496 #endif
 497         proc_kqhashlock_grp = lck_grp_alloc_init("proc-kqhashlock",  proc_lck_grp_attr);
 498         proc_knhashlock_grp = lck_grp_alloc_init("proc-knhashlock",  proc_lck_grp_attr);
 499         /* Allocate proc lock attribute */
 500         proc_lck_attr = lck_attr_alloc_init();
 501 #if 0
 502 #if __PROC_INTERNAL_DEBUG
 503         lck_attr_setdebug(proc_lck_attr);
 504 #endif
 505 #endif
 506
 507 #if CONFIG_FINE_LOCK_GROUPS
 508         proc_list_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
 509         proc_klist_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
 510         lck_mtx_init(&kernproc->p_mlock, proc_mlock_grp, proc_lck_attr);
 511         lck_mtx_init(&kernproc->p_fdmlock, proc_fdmlock_grp, proc_lck_attr);
 512         lck_mtx_init(&kernproc->p_ucred_mlock, proc_ucred_mlock_grp, proc_lck_attr);
 513         lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr);
 514 #else
 515         proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 516         proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 517         lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
 518         lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);
 519         lck_mtx_init(&kernproc->p_ucred_mlock, proc_lck_grp, proc_lck_attr);
 520         lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
 521 #endif
 522
 523         assert(bsd_simul_execs != 0);
 524         execargs_cache_lock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 525         execargs_cache_size = bsd_simul_execs;
 526         execargs_free_count = bsd_simul_execs;
 527         execargs_cache = (vm_offset_t *)kalloc(bsd_simul_execs * sizeof(vm_offset_t));
 528         bzero(execargs_cache, bsd_simul_execs * sizeof(vm_offset_t));
 529
 530         if (current_task() != kernel_task)
 531                 printf("bsd_init: We have a problem, "
 532                                 "current task is not kernel task\n");
 533
 534         bsd_init_kprintf("calling get_bsdthread_info\n");
 535         ut = (uthread_t)get_bsdthread_info(current_thread());
 536
 537 #if CONFIG_MACF
 538         /*
 539          * Initialize the MAC Framework
 540          */
 541         mac_policy_initbsd();
 542
 543 #if defined (__i386__) || defined (__x86_64__)
 544         /*
 545          * We currently only support this on i386/x86_64, as that is the
 546          * only lock code we have instrumented so far.
 547          */
 548         check_policy_init(policy_check_flags);
 549 #endif
 550 #endif /* MAC */
 551
 552         /* Initialize System Override call */
 553         init_system_override();
 554
 555         ulock_initialize();
 556
 557         /*
 558          * Create process 0.
 559          */
 560         proc_list_lock();
 561         LIST_INSERT_HEAD(&allproc, kernproc, p_list);
 562         kernproc->p_pgrp = &pgrp0;
 563         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 564         LIST_INIT(&pgrp0.pg_members);
 565 #ifdef CONFIG_FINE_LOCK_GROUPS
 566         lck_mtx_init(&pgrp0.pg_mlock, proc_mlock_grp, proc_lck_attr);
 567 #else
 568         lck_mtx_init(&pgrp0.pg_mlock, proc_lck_grp, proc_lck_attr);
 569 #endif
 570         /* There is no other bsd thread this point and is safe without pgrp lock */
 571         LIST_INSERT_HEAD(&pgrp0.pg_members, kernproc, p_pglist);
 572         kernproc->p_listflag |= P_LIST_INPGRP;
 573         kernproc->p_pgrpid = 0;
 574         kernproc->p_uniqueid = 0;
 575
 576         pgrp0.pg_session = &session0;
 577         pgrp0.pg_membercnt = 1;
 578
 579         session0.s_count = 1;
 580         session0.s_leader = kernproc;
 581         session0.s_listflags = 0;
 582 #ifdef CONFIG_FINE_LOCK_GROUPS
 583         lck_mtx_init(&session0.s_mlock, proc_mlock_grp, proc_lck_attr);
 584 #else
 585         lck_mtx_init(&session0.s_mlock, proc_lck_grp, proc_lck_attr);
 586 #endif
 587         LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
 588         proc_list_unlock();
 589
 590 #if CONFIG_PERSONAS
 591         kernproc->p_persona = NULL;
 592 #endif
 593
 594         kernproc->task = kernel_task;
 595
 596         kernproc->p_stat = SRUN;
 597         kernproc->p_flag = P_SYSTEM;
 598         kernproc->p_lflag = 0;
 599         kernproc->p_ladvflag = 0;
 600
 601 #if defined(__LP64__)
 602         kernproc->p_flag |= P_LP64;
 603 #endif
 604
 605 #if DEVELOPMENT || DEBUG
 606         if (bootarg_disable_aslr)
 607                 kernproc->p_flag |= P_DISABLE_ASLR;
 608 #endif
 609
 610         kernproc->p_nice = NZERO;
 611         kernproc->p_pptr = kernproc;
 612
 613         TAILQ_INIT(&kernproc->p_uthlist);
 614         TAILQ_INSERT_TAIL(&kernproc->p_uthlist, ut, uu_list);
 615
 616         kernproc->sigwait = FALSE;
 617         kernproc->sigwait_thread = THREAD_NULL;
 618         kernproc->exit_thread = THREAD_NULL;
 619         kernproc->p_csflags = CS_VALID;
 620
 621         /*
 622          * Create credential.  This also Initializes the audit information.
 623          */
 624         bsd_init_kprintf("calling bzero\n");
 625         bzero(&temp_cred, sizeof(temp_cred));
 626         bzero(&temp_pcred, sizeof(temp_pcred));
 627         temp_pcred.cr_ngroups = 1;
 628         /* kern_proc, shouldn't call up to DS for group membership */
 629         temp_pcred.cr_flags = CRF_NOMEMBERD;
 630         temp_cred.cr_audit.as_aia_p = audit_default_aia_p;
 631
 632         bsd_init_kprintf("calling kauth_cred_create\n");
 633         /*
 634          * We have to label the temp cred before we create from it to
 635          * properly set cr_ngroups, or the create will fail.
 636          */
 637         posix_cred_label(&temp_cred, &temp_pcred);
 638         kernproc->p_ucred = kauth_cred_create(&temp_cred);
 639
 640         /* update cred on proc */
 641         PROC_UPDATE_CREDS_ONPROC(kernproc);
 642
 643         /* give the (already exisiting) initial thread a reference on it */
 644         bsd_init_kprintf("calling kauth_cred_ref\n");
 645         kauth_cred_ref(kernproc->p_ucred);
 646         ut->uu_context.vc_ucred = kernproc->p_ucred;
 647         ut->uu_context.vc_thread = current_thread();
 648
 649         TAILQ_INIT(&kernproc->p_aio_activeq);
 650         TAILQ_INIT(&kernproc->p_aio_doneq);
 651         kernproc->p_aio_total_count = 0;
 652         kernproc->p_aio_active_count = 0;
 653
 654         bsd_init_kprintf("calling file_lock_init\n");
 655         file_lock_init();
 656
 657 #if CONFIG_MACF
 658         mac_cred_label_associate_kernel(kernproc->p_ucred);
 659 #endif
 660
 661         /* Create the file descriptor table. */
 662         kernproc->p_fd = &filedesc0;
 663         filedesc0.fd_cmask = cmask;
 664         filedesc0.fd_knlistsize = -1;
 665         filedesc0.fd_knlist = NULL;
 666         filedesc0.fd_knhash = NULL;
 667         filedesc0.fd_knhashmask = 0;
 668         lck_mtx_init(&filedesc0.fd_kqhashlock, proc_kqhashlock_grp, proc_lck_attr);
 669         lck_mtx_init(&filedesc0.fd_knhashlock, proc_knhashlock_grp, proc_lck_attr);
 670
 671         /* Create the limits structures. */
 672         kernproc->p_limit = &limit0;
 673         for (i = 0; i < sizeof(kernproc->p_rlimit)/sizeof(kernproc->p_rlimit[0]); i++)
 674                 limit0.pl_rlimit[i].rlim_cur =
 675                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 676         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 677         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = maxprocperuid;
 678         limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 679         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 680         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 681         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 682         limit0.pl_refcnt = 1;
 683
 684         kernproc->p_stats = &pstats0;
 685         kernproc->p_sigacts = &sigacts0;
 686
 687         /*
 688          * Charge root for one process: launchd.
 689          */
 690         bsd_init_kprintf("calling chgproccnt\n");
 691         (void)chgproccnt(0, 1);
 692
 693         /*
 694          *      Allocate a kernel submap for pageable memory
 695          *      for temporary copying (execve()).
 696          */
 697         {
 698                 vm_offset_t     minimum;
 699
 700                 bsd_init_kprintf("calling kmem_suballoc\n");
 701                 assert(bsd_pageable_map_size != 0);
 702                 ret = kmem_suballoc(kernel_map,
 703                                 &minimum,
 704                                 (vm_size_t)bsd_pageable_map_size,
 705                                 TRUE,
 706                                 VM_FLAGS_ANYWHERE,
 707                                 VM_MAP_KERNEL_FLAGS_NONE,
 708                                 VM_KERN_MEMORY_BSD,
 709                                 &bsd_pageable_map);
 710                 if (ret != KERN_SUCCESS)
 711                         panic("bsd_init: Failed to allocate bsd pageable map");
 712         }
 713
 714         /*
 715          * Initialize buffers and hash links for buffers
 716          *
 717          * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
 718          *              happen after a credential has been associated with
 719          *              the kernel task.
 720          */
 721         bsd_init_kprintf("calling bsd_bufferinit\n");
 722         bsd_bufferinit();
 723
 724         /*
 725          * Initialize the calendar.
 726          */
 727         bsd_init_kprintf("calling IOKitInitializeTime\n");
 728         IOKitInitializeTime();
 729
 730         bsd_init_kprintf("calling ubc_init\n");
 731         ubc_init();
 732
 733         /* Initialize the file systems. */
 734         bsd_init_kprintf("calling vfsinit\n");
 735         vfsinit();
 736
 737 #if CONFIG_PROC_UUID_POLICY
 738         /* Initial proc_uuid_policy subsystem */
 739         bsd_init_kprintf("calling proc_uuid_policy_init()\n");
 740         proc_uuid_policy_init();
 741 #endif
 742
 743 #if SOCKETS
 744         /* Initialize per-CPU cache allocator */
 745         mcache_init();
 746
 747         /* Initialize mbuf's. */
 748         bsd_init_kprintf("calling mbinit\n");
 749         mbinit();
 750         net_str_id_init(); /* for mbuf tags */
 751 #endif /* SOCKETS */
 752
 753         /*
 754          * Initializes security event auditing.
 755          * XXX: Should/could this occur later?
 756          */
 757 #if CONFIG_AUDIT
 758         bsd_init_kprintf("calling audit_init\n");
 759         audit_init();
 760 #endif
 761
 762         /* Initialize kqueues */
 763         bsd_init_kprintf("calling knote_init\n");
 764         knote_init();
 765
 766         /* Initialize event handler */
 767         bsd_init_kprintf("calling eventhandler_init\n");
 768         eventhandler_init();
 769
 770         /* Initialize for async IO */
 771         bsd_init_kprintf("calling aio_init\n");
 772         aio_init();
 773
 774         /* Initialize pipes */
 775         bsd_init_kprintf("calling pipeinit\n");
 776         pipeinit();
 777
 778         /* Initialize SysV shm subsystem locks; the subsystem proper is
 779          * initialized through a sysctl.
 780          */
 781 #if SYSV_SHM
 782         bsd_init_kprintf("calling sysv_shm_lock_init\n");
 783         sysv_shm_lock_init();
 784 #endif
 785 #if SYSV_SEM
 786         bsd_init_kprintf("calling sysv_sem_lock_init\n");
 787         sysv_sem_lock_init();
 788 #endif
 789 #if SYSV_MSG
 790         bsd_init_kprintf("sysv_msg_lock_init\n");
 791         sysv_msg_lock_init();
 792 #endif
 793         bsd_init_kprintf("calling pshm_lock_init\n");
 794         pshm_lock_init();
 795         bsd_init_kprintf("calling psem_lock_init\n");
 796         psem_lock_init();
 797
 798         pthread_init();
 799         /* POSIX Shm and Sem */
 800         bsd_init_kprintf("calling pshm_cache_init\n");
 801         pshm_cache_init();
 802         bsd_init_kprintf("calling psem_cache_init\n");
 803         psem_cache_init();
 804         bsd_init_kprintf("calling time_zone_slock_init\n");
 805         time_zone_slock_init();
 806         bsd_init_kprintf("calling select_waitq_init\n");
 807         select_waitq_init();
 808
 809         /*
 810          * Initialize protocols.  Block reception of incoming packets
 811          * until everything is ready.
 812          */
 813 #if NETWORKING
 814         bsd_init_kprintf("calling nwk_wq_init\n");
 815         nwk_wq_init();
 816         bsd_init_kprintf("calling dlil_init\n");
 817         dlil_init();
 818         bsd_init_kprintf("calling proto_kpi_init\n");
 819         proto_kpi_init();
 820 #endif /* NETWORKING */
 821 #if SOCKETS
 822         bsd_init_kprintf("calling socketinit\n");
 823         socketinit();
 824         bsd_init_kprintf("calling domaininit\n");
 825         domaininit();
 826         iptap_init();
 827 #if FLOW_DIVERT
 828         flow_divert_init();
 829 #endif  /* FLOW_DIVERT */
 830 #endif /* SOCKETS */
 831         kernproc->p_fd->fd_cdir = NULL;
 832         kernproc->p_fd->fd_rdir = NULL;
 833
 834 #if CONFIG_FREEZE
 835 #ifndef CONFIG_MEMORYSTATUS
 836     #error "CONFIG_FREEZE defined without matching CONFIG_MEMORYSTATUS"
 837 #endif
 838         /* Initialise background freezing */
 839         bsd_init_kprintf("calling memorystatus_freeze_init\n");
 840         memorystatus_freeze_init();
 841 #endif
 842
 843 #if CONFIG_MEMORYSTATUS
 844         /* Initialize kernel memory status notifications */
 845         bsd_init_kprintf("calling memorystatus_init\n");
 846         memorystatus_init();
 847 #endif /* CONFIG_MEMORYSTATUS */
 848
 849         bsd_init_kprintf("calling acct_init\n");
 850         acct_init();
 851
 852 #ifdef GPROF
 853         /* Initialize kernel profiling. */
 854         kmstartup();
 855 #endif
 856
 857         bsd_init_kprintf("calling sysctl_mib_init\n");
 858         sysctl_mib_init()
 859
 860         bsd_init_kprintf("calling bsd_autoconf\n");
 861         bsd_autoconf();
 862
 863         bsd_init_kprintf("calling os_reason_init\n");
 864         os_reason_init();
 865
 866 #if CONFIG_DTRACE
 867         dtrace_postinit();
 868 #endif
 869
 870         /*
 871          * We attach the loopback interface *way* down here to ensure
 872          * it happens after autoconf(), otherwise it becomes the
 873          * "primary" interface.
 874          */
 875 #include <loop.h>
 876 #if NLOOP > 0
 877         bsd_init_kprintf("calling loopattach\n");
 878         loopattach();                   /* XXX */
 879 #endif
 880 #if NGIF
 881         /* Initialize gif interface (after lo0) */
 882         gif_init();
 883 #endif
 884
 885 #if PFLOG
 886         /* Initialize packet filter log interface */
 887         pfloginit();
 888 #endif /* PFLOG */
 889
 890 #if NETHER > 0
 891         /* Register the built-in dlil ethernet interface family */
 892         bsd_init_kprintf("calling ether_family_init\n");
 893         ether_family_init();
 894 #endif /* ETHER */
 895
 896 #if NETWORKING
 897         /* Call any kext code that wants to run just after network init */
 898         bsd_init_kprintf("calling net_init_run\n");
 899         net_init_run();
 900
 901 #if CONTENT_FILTER
 902         cfil_init();
 903 #endif
 904
 905 #if PACKET_MANGLER
 906         pkt_mnglr_init();
 907 #endif
 908
 909 #if NECP
 910         /* Initialize Network Extension Control Policies */
 911         necp_init();
 912 #endif
 913
 914         netagent_init();
 915
 916         /* register user tunnel kernel control handler */
 917         utun_register_control();
 918 #if IPSEC
 919         ipsec_register_control();
 920 #endif /* IPSEC */
 921         netsrc_init();
 922         nstat_init();
 923         tcp_cc_init();
 924 #if MPTCP
 925         mptcp_control_register();
 926 #endif /* MPTCP */
 927 #endif /* NETWORKING */
 928
 929         bsd_init_kprintf("calling vnode_pager_bootstrap\n");
 930         vnode_pager_bootstrap();
 931
 932         bsd_init_kprintf("calling inittodr\n");
 933         inittodr(0);
 934
 935         /* Mount the root file system. */
 936         while( TRUE) {
 937                 int err;
 938
 939                 bsd_init_kprintf("calling setconf\n");
 940                 setconf();
 941 #if NFSCLIENT
 942                 netboot = (mountroot == netboot_mountroot);
 943 #endif
 944
 945                 bsd_init_kprintf("vfs_mountroot\n");
 946                 if (0 == (err = vfs_mountroot()))
 947                         break;
 948                 rootdevice[0] = '\0';
 949 #if NFSCLIENT
 950                 if (netboot) {
 951                         PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
 952                         vc_progress_set(FALSE, 0);
 953                         for (i=1; 1; i*=2) {
 954                                 printf("bsd_init: failed to mount network root, error %d, %s\n",
 955                                         err, PE_boot_args());
 956                                 printf("We are hanging here...\n");
 957                                 IOSleep(i*60*1000);
 958                         }
 959                         /*NOTREACHED*/
 960                 }
 961 #endif
 962                 printf("cannot mount root, errno = %d\n", err);
 963                 boothowto |= RB_ASKNAME;
 964         }
 965
 966         IOSecureBSDRoot(rootdevice);
 967
 968         context.vc_thread = current_thread();
 969         context.vc_ucred = kernproc->p_ucred;
 970         mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
 971
 972         bsd_init_kprintf("calling VFS_ROOT\n");
 973         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 974         if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
 975                 panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
 976         rootvnode->v_flag |= VROOT;
 977         (void)vnode_ref(rootvnode);
 978         (void)vnode_put(rootvnode);
 979         filedesc0.fd_cdir = rootvnode;
 980
 981 #if NFSCLIENT
 982         if (netboot) {
 983                 int err;
 984
 985                 netboot = TRUE;
 986                 /* post mount setup */
 987                 if ((err = netboot_setup()) != 0) {
 988                         PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
 989                         vc_progress_set(FALSE, 0);
 990                         for (i=1; 1; i*=2) {
 991                                 printf("bsd_init: NetBoot could not find root, error %d: %s\n",
 992                                         err, PE_boot_args());
 993                                 printf("We are hanging here...\n");
 994                                 IOSleep(i*60*1000);
 995                         }
 996                         /*NOTREACHED*/
 997                 }
 998         }
 999 #endif
1000
1001
1002 #if CONFIG_IMAGEBOOT
1003         /*
1004          * See if a system disk image is present. If so, mount it and
1005          * switch the root vnode to point to it
1006          */
1007         if (netboot == FALSE && imageboot_needed()) {
1008                 /*
1009                  * An image was found.  No turning back: we're booted
1010                  * with a kernel from the disk image.
1011                  */
1012                 imageboot_setup();
1013         }
1014 #endif /* CONFIG_IMAGEBOOT */
1015
1016         /* set initial time; all other resource data is  already zero'ed */
1017         microtime_with_abstime(&kernproc->p_start, &kernproc->p_stats->ps_start);
1018
1019 #if DEVFS
1020         {
1021             char mounthere[] = "/dev";  /* !const because of internal casting */
1022
1023             bsd_init_kprintf("calling devfs_kernel_mount\n");
1024             devfs_kernel_mount(mounthere);
1025         }
1026 #endif /* DEVFS */
1027
1028         /* Initialize signal state for process 0. */
1029         bsd_init_kprintf("calling siginit\n");
1030         siginit(kernproc);
1031
1032         bsd_init_kprintf("calling bsd_utaskbootstrap\n");
1033         bsd_utaskbootstrap();
1034
1035         pal_kernel_announce();
1036
1037         bsd_init_kprintf("calling mountroot_post_hook\n");
1038
1039         /* invoke post-root-mount hook */
1040         if (mountroot_post_hook != NULL)
1041                 mountroot_post_hook();
1042
1043 #if 0 /* not yet */
1044         consider_zone_gc(FALSE);
1045 #endif
1046
1047         bsd_init_kprintf("done\n");
1048 }
1049
1050 void
1051 bsdinit_task(void)
1052 {
1053         proc_t p = current_proc();
1054         struct uthread *ut;
1055         thread_t thread;
1056
1057         process_name("init", p);
1058
1059         ux_handler_init();
1060
1061         thread = current_thread();
1062         (void) host_set_exception_ports(host_priv_self(),
1063                                         EXC_MASK_ALL & ~(EXC_MASK_RPC_ALERT),//pilotfish (shark) needs this port
1064                                         (mach_port_t) ux_exception_port,
1065                                         EXCEPTION_DEFAULT| MACH_EXCEPTION_CODES,
1066                                         0);
1067
1068         ut = (uthread_t)get_bsdthread_info(thread);
1069
1070 #if CONFIG_MACF
1071         mac_cred_label_associate_user(p->p_ucred);
1072 #endif
1073
1074     vm_init_before_launchd();
1075
1076
1077         bsd_init_kprintf("bsd_do_post - done");
1078
1079         load_init_program(p);
1080         lock_trace = 1;
1081 }
1082
1083 kern_return_t
1084 bsd_autoconf(void)
1085 {
1086         kprintf("bsd_autoconf: calling kminit\n");
1087         kminit();
1088
1089         /*
1090          * Early startup for bsd pseudodevices.
1091          */
1092         {
1093             struct pseudo_init *pi;
1094
1095             for (pi = pseudo_inits; pi->ps_func; pi++)
1096                 (*pi->ps_func) (pi->ps_count);
1097         }
1098
1099         return( IOKitBSDInit());
1100 }
1101
1102
1103 #include <sys/disklabel.h>  /* for MAXPARTITIONS */
1104
1105 static void
1106 setconf(void)
1107 {
1108         u_int32_t       flags;
1109         kern_return_t   err;
1110
1111         err = IOFindBSDRoot(rootdevice, sizeof(rootdevice), &rootdev, &flags);
1112         if( err) {
1113                 printf("setconf: IOFindBSDRoot returned an error (%d);"
1114                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
1115                 rootdev = makedev( 6, 0 );
1116                 strlcpy(rootdevice, "sd0a", sizeof(rootdevice));
1117                 flags = 0;
1118         }
1119
1120 #if NFSCLIENT
1121         if( flags & 1 ) {
1122                 /* network device */
1123                 mountroot = netboot_mountroot;
1124         } else {
1125 #endif
1126                 /* otherwise have vfs determine root filesystem */
1127                 mountroot = NULL;
1128 #if NFSCLIENT
1129         }
1130 #endif
1131
1132 }
1133
1134 void
1135 bsd_utaskbootstrap(void)
1136 {
1137         thread_t thread;
1138         struct uthread *ut;
1139
1140         /*
1141          * Clone the bootstrap process from the kernel process, without
1142          * inheriting either task characteristics or memory from the kernel;
1143          */
1144         thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE);
1145
1146         /* Hold the reference as it will be dropped during shutdown */
1147         initproc = proc_find(1);
1148 #if __PROC_INTERNAL_DEBUG
1149         if (initproc == PROC_NULL)
1150                 panic("bsd_utaskbootstrap: initproc not set\n");
1151 #endif
1152         /*
1153          * Since we aren't going back out the normal way to our parent,
1154          * we have to drop the transition locks explicitly.
1155          */
1156         proc_signalend(initproc, 0);
1157         proc_transend(initproc, 0);
1158
1159         ut = (struct uthread *)get_bsdthread_info(thread);
1160         ut->uu_sigmask = 0;
1161         act_set_astbsd(thread);
1162         task_clear_return_wait(get_threadtask(thread));
1163 }
1164
1165 static void
1166 parse_bsd_args(void)
1167 {
1168         char namep[16];
1169         int msgbuf;
1170
1171         if ( PE_parse_boot_argn("-s", namep, sizeof (namep)))
1172                 boothowto |= RB_SINGLE;
1173
1174         if (PE_parse_boot_argn("-b", namep, sizeof (namep)))
1175                 boothowto |= RB_NOBOOTRC;
1176
1177         if (PE_parse_boot_argn("-x", namep, sizeof (namep))) /* safe boot */
1178                 boothowto |= RB_SAFEBOOT;
1179
1180         if (PE_parse_boot_argn("-minimalboot", namep, sizeof(namep))) {
1181                 /*
1182                  * -minimalboot indicates that we want userspace to be bootstrapped to a
1183                  * minimal environment.  What constitutes minimal is up to the bootstrap
1184                  * process.
1185                  */
1186                 minimalboot = 1;
1187         }
1188
1189 #if __arm64__
1190         /* disable 64 bit grading */
1191         if (PE_parse_boot_argn("-no64exec", namep, sizeof (namep)))
1192                 bootarg_no64exec = 1;
1193 #endif
1194
1195         /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */
1196         if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof (namep)))
1197                 bootarg_vnode_cache_defeat = 1;
1198
1199 #if DEVELOPMENT || DEBUG
1200         if (PE_parse_boot_argn("-disable_aslr", namep, sizeof (namep)))
1201                 bootarg_disable_aslr = 1;
1202 #endif
1203
1204         PE_parse_boot_argn("ncl", &ncl, sizeof (ncl));
1205         if (PE_parse_boot_argn("nbuf", &max_nbuf_headers,
1206                                 sizeof (max_nbuf_headers))) {
1207                 customnbuf = 1;
1208         }
1209
1210 #if CONFIG_MACF
1211 #if defined (__i386__) || defined (__x86_64__)
1212         PE_parse_boot_argn("policy_check", &policy_check_flags, sizeof (policy_check_flags));
1213 #endif
1214 #endif  /* CONFIG_MACF */
1215
1216         if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof (msgbuf))) {
1217                 log_setsize(msgbuf);
1218                 oslog_setsize(msgbuf);
1219         }
1220
1221         if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) {
1222                 nc_disabled = 1;
1223         }
1224
1225 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
1226         if (PE_parse_boot_argn("-no_vnode_jetsam", namep, sizeof(namep)))
1227                  bootarg_no_vnode_jetsam = 1;
1228 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
1229
1230
1231 #if CONFIG_EMBEDDED
1232         /*
1233          * The darkboot flag is specified by the bootloader and is stored in
1234          * boot_args->bootFlags. This flag is available starting revision 2.
1235          */
1236         boot_args *args = (boot_args *) PE_state.bootArgs;
1237         if ((args != NULL) && (args->Revision >= kBootArgsRevision2)) {
1238                 darkboot = (args->bootFlags & kBootFlagsDarkBoot) ? 1 : 0;
1239         } else {
1240                 darkboot = 0;
1241         }
1242 #endif
1243
1244 #if PROC_REF_DEBUG
1245         if (PE_parse_boot_argn("-disable_procref_tracking", namep, sizeof(namep))) {
1246                 proc_ref_tracking_disabled = 1;
1247         }
1248 #endif
1249
1250 #if OS_REASON_DEBUG
1251         if (PE_parse_boot_argn("-disable_osreason_debug", namep, sizeof(namep))) {
1252                 os_reason_debug_disabled = 1;
1253         }
1254 #endif
1255
1256         PE_parse_boot_argn("sigrestrict", &sigrestrict_arg, sizeof(sigrestrict_arg));
1257
1258 #if DEVELOPMENT|| DEBUG
1259         if (PE_parse_boot_argn("-no_sigsys", namep, sizeof(namep))) {
1260                 send_sigsys = false;
1261         }
1262 #endif
1263
1264 #if (DEVELOPMENT|| DEBUG)
1265         if (PE_parse_boot_argn("alt-dyld", dyld_alt_path, sizeof(dyld_alt_path))) {
1266         if (strlen(dyld_alt_path) > 0) {
1267             use_alt_dyld = 1;
1268         }
1269         }
1270 #endif
1271 }
1272
1273 void
1274 bsd_exec_setup(int scale)
1275 {
1276
1277         switch (scale) {
1278                 case 0:
1279                 case 1:
1280                         bsd_simul_execs = BSD_SIMUL_EXECS;
1281                         break;
1282                 case 2:
1283                 case 3:
1284                         bsd_simul_execs = 65;
1285                         break;
1286                 case 4:
1287                 case 5:
1288                         bsd_simul_execs = 129;
1289                         break;
1290                 case 6:
1291                 case 7:
1292                         bsd_simul_execs = 257;
1293                         break;
1294                 default:
1295                         bsd_simul_execs = 513;
1296                         break;
1297
1298         }
1299         bsd_pageable_map_size = (bsd_simul_execs * BSD_PAGEABLE_SIZE_PER_EXEC);
1300 }
1301
1302 #if !NFSCLIENT
1303 int
1304 netboot_root(void);
1305
1306 int
1307 netboot_root(void)
1308 {
1309         return(0);
1310 }
1311 #endif