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 #include <sys/kasl.h>
  98
  99 #include <security/audit/audit.h>
 100
 101 #include <sys/malloc.h>
 102 #include <sys/dkstat.h>
 103 #include <sys/codesign.h>
 104
 105 #include <kern/startup.h>
 106 #include <kern/thread.h>
 107 #include <kern/task.h>
 108 #include <kern/ast.h>
 109 #include <kern/kalloc.h>
 110 #include <mach/mach_host.h>
 111
 112 #include <mach/vm_param.h>
 113
 114 #include <vm/vm_map.h>
 115 #include <vm/vm_kern.h>
 116
 117 #include <sys/ux_exception.h>   /* for ux_exception_port */
 118
 119 #include <sys/reboot.h>
 120 #include <mach/exception_types.h>
 121 #include <dev/busvar.h>                 /* for pseudo_inits */
 122 #include <sys/kdebug.h>
 123 #include <sys/monotonic.h>
 124 #include <sys/reason.h>
 125
 126 #include <mach/mach_types.h>
 127 #include <mach/vm_prot.h>
 128 #include <mach/semaphore.h>
 129 #include <mach/sync_policy.h>
 130 #include <kern/clock.h>
 131 #include <mach/kern_return.h>
 132 #include <mach/thread_act.h>            /* for thread_resume() */
 133 #include <mach/task.h>                  /* for task_set_exception_ports() */
 134 #include <sys/ux_exception.h>           /* for ux_handler() */
 135 #include <sys/ubc_internal.h>           /* for ubc_init() */
 136 #include <sys/mcache.h>                 /* for mcache_init() */
 137 #include <sys/mbuf.h>                   /* for mbinit() */
 138 #include <sys/event.h>                  /* for knote_init() */
 139 #include <sys/eventhandler.h>           /* for eventhandler_init() */
 140 #include <sys/kern_memorystatus.h>      /* for memorystatus_init() */
 141 #include <sys/aio_kern.h>               /* for aio_init() */
 142 #include <sys/semaphore.h>              /* for psem_cache_init() */
 143 #include <net/dlil.h>                   /* for dlil_init() */
 144 #include <net/kpi_protocol.h>           /* for proto_kpi_init() */
 145 #include <net/iptap.h>                  /* for iptap_init() */
 146 #include <sys/pipe.h>                   /* for pipeinit() */
 147 #include <sys/socketvar.h>              /* for socketinit() */
 148 #include <sys/protosw.h>                /* for domaininit() */
 149 #include <kern/sched_prim.h>            /* for thread_wakeup() */
 150 #include <net/if_ether.h>               /* for ether_family_init() */
 151 #include <net/if_gif.h>                 /* for gif_init() */
 152 #include <vm/vm_protos.h>               /* for vnode_pager_bootstrap() */
 153 #include <miscfs/devfs/devfsdefs.h>     /* for devfs_kernel_mount() */
 154 #include <mach/host_priv.h>             /* for host_set_exception_ports() */
 155 #include <kern/host.h>                  /* for host_priv_self() */
 156 #include <vm/vm_kern.h>                 /* for kmem_suballoc() */
 157 #include <sys/semaphore.h>              /* for psem_lock_init() */
 158 #include <sys/msgbuf.h>                 /* for log_setsize() */
 159 #include <sys/tty.h>                    /* for tty_init() */
 160 #include <sys/proc_uuid_policy.h>       /* proc_uuid_policy_init() */
 161 #include <netinet/flow_divert.h>        /* flow_divert_init() */
 162 #include <net/content_filter.h>         /* for cfil_init() */
 163 #include <net/necp.h>                   /* for necp_init() */
 164 #include <net/network_agent.h>          /* for netagent_init() */
 165 #include <net/packet_mangler.h>         /* for pkt_mnglr_init() */
 166 #include <net/if_utun.h>                /* for utun_register_control() */
 167 #include <net/if_ipsec.h>               /* for ipsec_register_control() */
 168 #include <net/net_str_id.h>             /* for net_str_id_init() */
 169 #include <net/netsrc.h>                 /* for netsrc_init() */
 170 #include <net/ntstat.h>                 /* for nstat_init() */
 171 #include <netinet/tcp_cc.h>                     /* for tcp_cc_init() */
 172 #include <netinet/mptcp_var.h>          /* for mptcp_control_register() */
 173 #include <net/nwk_wq.h>                 /* for nwk_wq_init */
 174 #include <kern/assert.h>                /* for assert() */
 175 #include <sys/kern_overrides.h>         /* for init_system_override() */
 176
 177 #include <net/init.h>
 178
 179 #if CONFIG_MACF
 180 #include <security/mac_framework.h>
 181 #include <security/mac_internal.h>      /* mac_init_bsd() */
 182 #include <security/mac_mach_internal.h> /* mac_update_task_label() */
 183 #endif
 184
 185 #include <machine/exec.h>
 186
 187 #if NFSCLIENT
 188 #include <sys/netboot.h>
 189 #endif
 190
 191 #if CONFIG_IMAGEBOOT
 192 #include <sys/imageboot.h>
 193 #endif
 194
 195 #if PFLOG
 196 #include <net/if_pflog.h>
 197 #endif
 198
 199
 200 #include <pexpert/pexpert.h>
 201 #include <machine/pal_routines.h>
 202 #include <console/video_console.h>
 203
 204
 205 void * get_user_regs(thread_t);         /* XXX kludge for <machine/thread.h> */
 206 void IOKitInitializeTime(void);         /* XXX */
 207 void IOSleep(unsigned int);             /* XXX */
 208 void loopattach(void);                  /* XXX */
 209
 210 const char    copyright[] =
 211 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
 212 "The Regents of the University of California. "
 213 "All rights reserved.\n\n";
 214
 215 /* Components of the first process -- never freed. */
 216 struct  proc proc0;
 217 struct  session session0;
 218 struct  pgrp pgrp0;
 219 struct  filedesc filedesc0;
 220 struct  plimit limit0;
 221 struct  pstats pstats0;
 222 struct  sigacts sigacts0;
 223 proc_t kernproc;
 224 proc_t initproc;
 225
 226 long tk_cancc;
 227 long tk_nin;
 228 long tk_nout;
 229 long tk_rawcc;
 230
 231 int lock_trace = 0;
 232 /* Global variables to make pstat happy. We do swapping differently */
 233 int nswdev, nswap;
 234 int nswapmap;
 235 void *swapmap;
 236 struct swdevt swdevt[1];
 237
 238 dev_t   rootdev;                /* device of the root */
 239 dev_t   dumpdev;                /* device to take dumps on */
 240 long    dumplo;                 /* offset into dumpdev */
 241 long    hostid;
 242 char    hostname[MAXHOSTNAMELEN];
 243 int             hostnamelen;
 244 char    domainname[MAXDOMNAMELEN];
 245 int             domainnamelen;
 246
 247 char rootdevice[DEVMAXNAMESIZE];
 248
 249 #if  KMEMSTATS
 250 struct  kmemstats kmemstats[M_LAST];
 251 #endif
 252
 253 struct  vnode *rootvp;
 254 int boothowto = RB_DEBUG;
 255 int minimalboot = 0;
 256 #if CONFIG_EMBEDDED
 257 int darkboot = 0;
 258 #endif
 259
 260 #if PROC_REF_DEBUG
 261 __private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */
 262 #endif
 263
 264 #if OS_REASON_DEBUG
 265 __private_extern__ int os_reason_debug_disabled = 0; /* disable asserts for when we fail to allocate OS reasons */
 266 #endif
 267
 268 extern kern_return_t IOFindBSDRoot(char *, unsigned int, dev_t *, u_int32_t *);
 269 extern void IOSecureBSDRoot(const char * rootName);
 270 extern kern_return_t IOKitBSDInit(void );
 271 extern void kminit(void);
 272 extern void file_lock_init(void);
 273 extern void kmeminit(void);
 274 extern void bsd_bufferinit(void);
 275 extern void oslog_setsize(int size);
 276 extern void throttle_init(void);
 277 extern void acct_init(void);
 278
 279 extern int serverperfmode;
 280 extern int ncl;
 281
 282 vm_map_t        bsd_pageable_map;
 283 vm_map_t        mb_map;
 284
 285 static  int bsd_simul_execs;
 286 static int bsd_pageable_map_size;
 287 __private_extern__ int execargs_cache_size = 0;
 288 __private_extern__ int execargs_free_count = 0;
 289 __private_extern__ vm_offset_t * execargs_cache = NULL;
 290
 291 void bsd_exec_setup(int);
 292
 293 #if __arm64__
 294 __private_extern__ int bootarg_no64exec = 0;
 295 #endif
 296 __private_extern__ int bootarg_vnode_cache_defeat = 0;
 297
 298 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
 299 __private_extern__ int bootarg_no_vnode_jetsam = 0;
 300 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
 301
 302 /*
 303  * Prevent kernel-based ASLR from being used, for testing.
 304  */
 305 #if DEVELOPMENT || DEBUG
 306 __private_extern__ int bootarg_disable_aslr = 0;
 307 #endif
 308
 309 /*
 310  * Allow an alternate dyld to be used for testing.
 311  */
 312
 313 #if DEVELOPMENT || DEBUG
 314 char dyld_alt_path[MAXPATHLEN];
 315 int use_alt_dyld = 0;
 316 #endif
 317
 318 int     cmask = CMASK;
 319 extern int customnbuf;
 320
 321 kern_return_t bsd_autoconf(void);
 322 void bsd_utaskbootstrap(void);
 323
 324 static void parse_bsd_args(void);
 325 #if CONFIG_DEV_KMEM
 326 extern void dev_kmem_init(void);
 327 #endif
 328 extern void time_zone_slock_init(void);
 329 extern void select_waitq_init(void);
 330 static void process_name(const char *, proc_t);
 331
 332 static void setconf(void);
 333
 334 #if SYSV_SHM
 335 extern void sysv_shm_lock_init(void);
 336 #endif
 337 #if SYSV_SEM
 338 extern void sysv_sem_lock_init(void);
 339 #endif
 340 #if SYSV_MSG
 341 extern void sysv_msg_lock_init(void);
 342 #endif
 343
 344 extern void ulock_initialize(void);
 345
 346 #if CONFIG_MACF
 347 #if defined (__i386__) || defined (__x86_64__)
 348 /* MACF policy_check configuration flags; see policy_check.c for details */
 349 int policy_check_flags = 0;
 350
 351 extern int check_policy_init(int);
 352 #endif
 353 #endif  /* CONFIG_MACF */
 354
 355 /* If we are using CONFIG_DTRACE */
 356 #if CONFIG_DTRACE
 357         extern void dtrace_postinit(void);
 358 #endif
 359
 360 /*
 361  * Initialization code.
 362  * Called from cold start routine as
 363  * soon as a stack and segmentation
 364  * have been established.
 365  * Functions:
 366  *      turn on clock
 367  *      hand craft 0th process
 368  *      call all initialization routines
 369  *  hand craft 1st user process
 370  */
 371
 372 /*
 373  *      Sets the name for the given task.
 374  */
 375 static void
 376 process_name(const char *s, proc_t p)
 377 {
 378        strlcpy(p->p_comm, s, sizeof(p->p_comm));
 379        strlcpy(p->p_name, s, sizeof(p->p_name));
 380 }
 381
 382 /* To allow these values to be patched, they're globals here */
 383 #include <machine/vmparam.h>
 384 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ - PAGE_MAX_SIZE };
 385 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 386 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 387
 388 extern thread_t cloneproc(task_t, coalition_t, proc_t, int, int);
 389 extern int      (*mountroot)(void);
 390
 391 lck_grp_t * proc_lck_grp;
 392 lck_grp_t * proc_slock_grp;
 393 lck_grp_t * proc_fdmlock_grp;
 394 lck_grp_t * proc_kqhashlock_grp;
 395 lck_grp_t * proc_knhashlock_grp;
 396 lck_grp_t * proc_ucred_mlock_grp;
 397 lck_grp_t * proc_mlock_grp;
 398 lck_grp_attr_t * proc_lck_grp_attr;
 399 lck_attr_t * proc_lck_attr;
 400 lck_mtx_t * proc_list_mlock;
 401 lck_mtx_t * proc_klist_mlock;
 402
 403
 404 extern lck_mtx_t * execargs_cache_lock;
 405
 406 /* hook called after root is mounted XXX temporary hack */
 407 void (*mountroot_post_hook)(void);
 408 void (*unmountroot_pre_hook)(void);
 409
 410 /*
 411  * This function is called before IOKit initialization, so that globals
 412  * like the sysctl tree are initialized before kernel extensions
 413  * are started (since they may want to register sysctls
 414  */
 415 void
 416 bsd_early_init(void)
 417 {
 418         sysctl_early_init();
 419 }
 420
 421 /*
 422  * This function is called very early on in the Mach startup, from the
 423  * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 424  * in the context of the current (startup) task using a call to the
 425  * function kernel_thread_create() to jump into start_kernel_threads().
 426  * Internally, kernel_thread_create() calls thread_create_internal(),
 427  * which calls uthread_alloc().  The function of uthread_alloc() is
 428  * normally to allocate a uthread structure, and fill out the uu_sigmask,
 429  * uu_context fields.  It skips filling these out in the case of the "task"
 430  * being "kernel_task", because the order of operation is inverted.  To
 431  * account for that, we need to manually fill in at least the contents
 432  * of the uu_context.vc_ucred field so that the uthread structure can be
 433  * used like any other.
 434  */
 435
 436 void
 437 bsd_init(void)
 438 {
 439         struct uthread *ut;
 440         unsigned int i;
 441         struct vfs_context context;
 442         kern_return_t   ret;
 443         struct ucred temp_cred;
 444         struct posix_cred temp_pcred;
 445 #if NFSCLIENT || CONFIG_IMAGEBOOT
 446         boolean_t       netboot = FALSE;
 447 #endif
 448
 449 #define bsd_init_kprintf(x...) /* kprintf("bsd_init: " x) */
 450
 451         throttle_init();
 452
 453         printf(copyright);
 454
 455         bsd_init_kprintf("calling kmeminit\n");
 456         kmeminit();
 457
 458         bsd_init_kprintf("calling parse_bsd_args\n");
 459         parse_bsd_args();
 460
 461 #if CONFIG_DEV_KMEM
 462         bsd_init_kprintf("calling dev_kmem_init\n");
 463         dev_kmem_init();
 464 #endif
 465
 466         /* Initialize kauth subsystem before instancing the first credential */
 467         bsd_init_kprintf("calling kauth_init\n");
 468         kauth_init();
 469
 470         /* Initialize process and pgrp structures. */
 471         bsd_init_kprintf("calling procinit\n");
 472         procinit();
 473
 474         /* Initialize the ttys (MUST be before kminit()/bsd_autoconf()!)*/
 475         tty_init();
 476
 477         kernproc = &proc0;      /* implicitly bzero'ed */
 478
 479         /* kernel_task->proc = kernproc; */
 480         set_bsdtask_info(kernel_task,(void *)kernproc);
 481
 482         /* give kernproc a name */
 483         bsd_init_kprintf("calling process_name\n");
 484         process_name("kernel_task", kernproc);
 485
 486         /* allocate proc lock group attribute and group */
 487         bsd_init_kprintf("calling lck_grp_attr_alloc_init\n");
 488         proc_lck_grp_attr= lck_grp_attr_alloc_init();
 489
 490         proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
 491
 492 #if CONFIG_FINE_LOCK_GROUPS
 493         proc_slock_grp = lck_grp_alloc_init("proc-slock",  proc_lck_grp_attr);
 494         proc_ucred_mlock_grp = lck_grp_alloc_init("proc-ucred-mlock",  proc_lck_grp_attr);
 495         proc_mlock_grp = lck_grp_alloc_init("proc-mlock",  proc_lck_grp_attr);
 496         proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock",  proc_lck_grp_attr);
 497 #endif
 498         proc_kqhashlock_grp = lck_grp_alloc_init("proc-kqhashlock",  proc_lck_grp_attr);
 499         proc_knhashlock_grp = lck_grp_alloc_init("proc-knhashlock",  proc_lck_grp_attr);
 500         /* Allocate proc lock attribute */
 501         proc_lck_attr = lck_attr_alloc_init();
 502 #if 0
 503 #if __PROC_INTERNAL_DEBUG
 504         lck_attr_setdebug(proc_lck_attr);
 505 #endif
 506 #endif
 507
 508 #if CONFIG_FINE_LOCK_GROUPS
 509         proc_list_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
 510         proc_klist_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
 511         lck_mtx_init(&kernproc->p_mlock, proc_mlock_grp, proc_lck_attr);
 512         lck_mtx_init(&kernproc->p_fdmlock, proc_fdmlock_grp, proc_lck_attr);
 513         lck_mtx_init(&kernproc->p_ucred_mlock, proc_ucred_mlock_grp, proc_lck_attr);
 514         lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr);
 515 #else
 516         proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 517         proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 518         lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
 519         lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);
 520         lck_mtx_init(&kernproc->p_ucred_mlock, proc_lck_grp, proc_lck_attr);
 521         lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
 522 #endif
 523
 524         assert(bsd_simul_execs != 0);
 525         execargs_cache_lock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 526         execargs_cache_size = bsd_simul_execs;
 527         execargs_free_count = bsd_simul_execs;
 528         execargs_cache = (vm_offset_t *)kalloc(bsd_simul_execs * sizeof(vm_offset_t));
 529         bzero(execargs_cache, bsd_simul_execs * sizeof(vm_offset_t));
 530
 531         if (current_task() != kernel_task)
 532                 printf("bsd_init: We have a problem, "
 533                                 "current task is not kernel task\n");
 534
 535         bsd_init_kprintf("calling get_bsdthread_info\n");
 536         ut = (uthread_t)get_bsdthread_info(current_thread());
 537
 538 #if CONFIG_MACF
 539         /*
 540          * Initialize the MAC Framework
 541          */
 542         mac_policy_initbsd();
 543
 544 #if defined (__i386__) || defined (__x86_64__)
 545         /*
 546          * We currently only support this on i386/x86_64, as that is the
 547          * only lock code we have instrumented so far.
 548          */
 549         check_policy_init(policy_check_flags);
 550 #endif
 551 #endif /* MAC */
 552
 553         /* Initialize System Override call */
 554         init_system_override();
 555
 556         ulock_initialize();
 557
 558         /*
 559          * Create process 0.
 560          */
 561         proc_list_lock();
 562         LIST_INSERT_HEAD(&allproc, kernproc, p_list);
 563         kernproc->p_pgrp = &pgrp0;
 564         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 565         LIST_INIT(&pgrp0.pg_members);
 566 #ifdef CONFIG_FINE_LOCK_GROUPS
 567         lck_mtx_init(&pgrp0.pg_mlock, proc_mlock_grp, proc_lck_attr);
 568 #else
 569         lck_mtx_init(&pgrp0.pg_mlock, proc_lck_grp, proc_lck_attr);
 570 #endif
 571         /* There is no other bsd thread this point and is safe without pgrp lock */
 572         LIST_INSERT_HEAD(&pgrp0.pg_members, kernproc, p_pglist);
 573         kernproc->p_listflag |= P_LIST_INPGRP;
 574         kernproc->p_pgrpid = 0;
 575         kernproc->p_uniqueid = 0;
 576
 577         pgrp0.pg_session = &session0;
 578         pgrp0.pg_membercnt = 1;
 579
 580         session0.s_count = 1;
 581         session0.s_leader = kernproc;
 582         session0.s_listflags = 0;
 583 #ifdef CONFIG_FINE_LOCK_GROUPS
 584         lck_mtx_init(&session0.s_mlock, proc_mlock_grp, proc_lck_attr);
 585 #else
 586         lck_mtx_init(&session0.s_mlock, proc_lck_grp, proc_lck_attr);
 587 #endif
 588         LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
 589         proc_list_unlock();
 590
 591 #if CONFIG_PERSONAS
 592         kernproc->p_persona = NULL;
 593 #endif
 594
 595         kernproc->task = kernel_task;
 596
 597         kernproc->p_stat = SRUN;
 598         kernproc->p_flag = P_SYSTEM;
 599         kernproc->p_lflag = 0;
 600         kernproc->p_ladvflag = 0;
 601
 602 #if defined(__LP64__)
 603         kernproc->p_flag |= P_LP64;
 604 #endif
 605
 606 #if DEVELOPMENT || DEBUG
 607         if (bootarg_disable_aslr)
 608                 kernproc->p_flag |= P_DISABLE_ASLR;
 609 #endif
 610
 611         kernproc->p_nice = NZERO;
 612         kernproc->p_pptr = kernproc;
 613
 614         TAILQ_INIT(&kernproc->p_uthlist);
 615         TAILQ_INSERT_TAIL(&kernproc->p_uthlist, ut, uu_list);
 616
 617         kernproc->sigwait = FALSE;
 618         kernproc->sigwait_thread = THREAD_NULL;
 619         kernproc->exit_thread = THREAD_NULL;
 620         kernproc->p_csflags = CS_VALID;
 621
 622         /*
 623          * Create credential.  This also Initializes the audit information.
 624          */
 625         bsd_init_kprintf("calling bzero\n");
 626         bzero(&temp_cred, sizeof(temp_cred));
 627         bzero(&temp_pcred, sizeof(temp_pcred));
 628         temp_pcred.cr_ngroups = 1;
 629         /* kern_proc, shouldn't call up to DS for group membership */
 630         temp_pcred.cr_flags = CRF_NOMEMBERD;
 631         temp_cred.cr_audit.as_aia_p = audit_default_aia_p;
 632
 633         bsd_init_kprintf("calling kauth_cred_create\n");
 634         /*
 635          * We have to label the temp cred before we create from it to
 636          * properly set cr_ngroups, or the create will fail.
 637          */
 638         posix_cred_label(&temp_cred, &temp_pcred);
 639         kernproc->p_ucred = kauth_cred_create(&temp_cred);
 640
 641         /* update cred on proc */
 642         PROC_UPDATE_CREDS_ONPROC(kernproc);
 643
 644         /* give the (already exisiting) initial thread a reference on it */
 645         bsd_init_kprintf("calling kauth_cred_ref\n");
 646         kauth_cred_ref(kernproc->p_ucred);
 647         ut->uu_context.vc_ucred = kernproc->p_ucred;
 648         ut->uu_context.vc_thread = current_thread();
 649
 650         TAILQ_INIT(&kernproc->p_aio_activeq);
 651         TAILQ_INIT(&kernproc->p_aio_doneq);
 652         kernproc->p_aio_total_count = 0;
 653         kernproc->p_aio_active_count = 0;
 654
 655         bsd_init_kprintf("calling file_lock_init\n");
 656         file_lock_init();
 657
 658 #if CONFIG_MACF
 659         mac_cred_label_associate_kernel(kernproc->p_ucred);
 660 #endif
 661
 662         /* Create the file descriptor table. */
 663         kernproc->p_fd = &filedesc0;
 664         filedesc0.fd_cmask = cmask;
 665         filedesc0.fd_knlistsize = -1;
 666         filedesc0.fd_knlist = NULL;
 667         filedesc0.fd_knhash = NULL;
 668         filedesc0.fd_knhashmask = 0;
 669         lck_mtx_init(&filedesc0.fd_kqhashlock, proc_kqhashlock_grp, proc_lck_attr);
 670         lck_mtx_init(&filedesc0.fd_knhashlock, proc_knhashlock_grp, proc_lck_attr);
 671
 672         /* Create the limits structures. */
 673         kernproc->p_limit = &limit0;
 674         for (i = 0; i < sizeof(kernproc->p_rlimit)/sizeof(kernproc->p_rlimit[0]); i++)
 675                 limit0.pl_rlimit[i].rlim_cur =
 676                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 677         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 678         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = maxprocperuid;
 679         limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 680         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 681         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 682         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 683         limit0.pl_refcnt = 1;
 684
 685         kernproc->p_stats = &pstats0;
 686         kernproc->p_sigacts = &sigacts0;
 687
 688         /*
 689          * Charge root for one process: launchd.
 690          */
 691         bsd_init_kprintf("calling chgproccnt\n");
 692         (void)chgproccnt(0, 1);
 693
 694         /*
 695          *      Allocate a kernel submap for pageable memory
 696          *      for temporary copying (execve()).
 697          */
 698         {
 699                 vm_offset_t     minimum;
 700
 701                 bsd_init_kprintf("calling kmem_suballoc\n");
 702                 assert(bsd_pageable_map_size != 0);
 703                 ret = kmem_suballoc(kernel_map,
 704                                 &minimum,
 705                                 (vm_size_t)bsd_pageable_map_size,
 706                                 TRUE,
 707                                 VM_FLAGS_ANYWHERE,
 708                                 VM_MAP_KERNEL_FLAGS_NONE,
 709                                 VM_KERN_MEMORY_BSD,
 710                                 &bsd_pageable_map);
 711                 if (ret != KERN_SUCCESS)
 712                         panic("bsd_init: Failed to allocate bsd pageable map");
 713         }
 714
 715         bsd_init_kprintf("calling fpxlog_init\n");
 716         fpxlog_init();
 717
 718         /*
 719          * Initialize buffers and hash links for buffers
 720          *
 721          * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
 722          *              happen after a credential has been associated with
 723          *              the kernel task.
 724          */
 725         bsd_init_kprintf("calling bsd_bufferinit\n");
 726         bsd_bufferinit();
 727
 728         /*
 729          * Initialize the calendar.
 730          */
 731         bsd_init_kprintf("calling IOKitInitializeTime\n");
 732         IOKitInitializeTime();
 733
 734         bsd_init_kprintf("calling ubc_init\n");
 735         ubc_init();
 736
 737         /* Initialize the file systems. */
 738         bsd_init_kprintf("calling vfsinit\n");
 739         vfsinit();
 740
 741 #if CONFIG_PROC_UUID_POLICY
 742         /* Initial proc_uuid_policy subsystem */
 743         bsd_init_kprintf("calling proc_uuid_policy_init()\n");
 744         proc_uuid_policy_init();
 745 #endif
 746
 747 #if SOCKETS
 748         /* Initialize per-CPU cache allocator */
 749         mcache_init();
 750
 751         /* Initialize mbuf's. */
 752         bsd_init_kprintf("calling mbinit\n");
 753         mbinit();
 754         net_str_id_init(); /* for mbuf tags */
 755 #endif /* SOCKETS */
 756
 757         /*
 758          * Initializes security event auditing.
 759          * XXX: Should/could this occur later?
 760          */
 761 #if CONFIG_AUDIT
 762         bsd_init_kprintf("calling audit_init\n");
 763         audit_init();
 764 #endif
 765
 766         /* Initialize kqueues */
 767         bsd_init_kprintf("calling knote_init\n");
 768         knote_init();
 769
 770         /* Initialize event handler */
 771         bsd_init_kprintf("calling eventhandler_init\n");
 772         eventhandler_init();
 773
 774         /* Initialize for async IO */
 775         bsd_init_kprintf("calling aio_init\n");
 776         aio_init();
 777
 778         /* Initialize pipes */
 779         bsd_init_kprintf("calling pipeinit\n");
 780         pipeinit();
 781
 782         /* Initialize SysV shm subsystem locks; the subsystem proper is
 783          * initialized through a sysctl.
 784          */
 785 #if SYSV_SHM
 786         bsd_init_kprintf("calling sysv_shm_lock_init\n");
 787         sysv_shm_lock_init();
 788 #endif
 789 #if SYSV_SEM
 790         bsd_init_kprintf("calling sysv_sem_lock_init\n");
 791         sysv_sem_lock_init();
 792 #endif
 793 #if SYSV_MSG
 794         bsd_init_kprintf("sysv_msg_lock_init\n");
 795         sysv_msg_lock_init();
 796 #endif
 797         bsd_init_kprintf("calling pshm_lock_init\n");
 798         pshm_lock_init();
 799         bsd_init_kprintf("calling psem_lock_init\n");
 800         psem_lock_init();
 801
 802         pthread_init();
 803         /* POSIX Shm and Sem */
 804         bsd_init_kprintf("calling pshm_cache_init\n");
 805         pshm_cache_init();
 806         bsd_init_kprintf("calling psem_cache_init\n");
 807         psem_cache_init();
 808         bsd_init_kprintf("calling time_zone_slock_init\n");
 809         time_zone_slock_init();
 810         bsd_init_kprintf("calling select_waitq_init\n");
 811         select_waitq_init();
 812
 813         /*
 814          * Initialize protocols.  Block reception of incoming packets
 815          * until everything is ready.
 816          */
 817 #if NETWORKING
 818         bsd_init_kprintf("calling nwk_wq_init\n");
 819         nwk_wq_init();
 820         bsd_init_kprintf("calling dlil_init\n");
 821         dlil_init();
 822         bsd_init_kprintf("calling proto_kpi_init\n");
 823         proto_kpi_init();
 824 #endif /* NETWORKING */
 825 #if SOCKETS
 826         bsd_init_kprintf("calling socketinit\n");
 827         socketinit();
 828         bsd_init_kprintf("calling domaininit\n");
 829         domaininit();
 830         iptap_init();
 831 #if FLOW_DIVERT
 832         flow_divert_init();
 833 #endif  /* FLOW_DIVERT */
 834 #endif /* SOCKETS */
 835         kernproc->p_fd->fd_cdir = NULL;
 836         kernproc->p_fd->fd_rdir = NULL;
 837
 838 #if CONFIG_FREEZE
 839 #ifndef CONFIG_MEMORYSTATUS
 840     #error "CONFIG_FREEZE defined without matching CONFIG_MEMORYSTATUS"
 841 #endif
 842         /* Initialise background freezing */
 843         bsd_init_kprintf("calling memorystatus_freeze_init\n");
 844         memorystatus_freeze_init();
 845 #endif
 846
 847 #if CONFIG_MEMORYSTATUS
 848         /* Initialize kernel memory status notifications */
 849         bsd_init_kprintf("calling memorystatus_init\n");
 850         memorystatus_init();
 851 #endif /* CONFIG_MEMORYSTATUS */
 852
 853         bsd_init_kprintf("calling acct_init\n");
 854         acct_init();
 855
 856 #ifdef GPROF
 857         /* Initialize kernel profiling. */
 858         kmstartup();
 859 #endif
 860
 861         bsd_init_kprintf("calling sysctl_mib_init\n");
 862         sysctl_mib_init()
 863
 864         bsd_init_kprintf("calling bsd_autoconf\n");
 865         bsd_autoconf();
 866
 867         bsd_init_kprintf("calling os_reason_init\n");
 868         os_reason_init();
 869
 870 #if CONFIG_DTRACE
 871         dtrace_postinit();
 872 #endif
 873
 874         /*
 875          * We attach the loopback interface *way* down here to ensure
 876          * it happens after autoconf(), otherwise it becomes the
 877          * "primary" interface.
 878          */
 879 #include <loop.h>
 880 #if NLOOP > 0
 881         bsd_init_kprintf("calling loopattach\n");
 882         loopattach();                   /* XXX */
 883 #endif
 884 #if NGIF
 885         /* Initialize gif interface (after lo0) */
 886         gif_init();
 887 #endif
 888
 889 #if PFLOG
 890         /* Initialize packet filter log interface */
 891         pfloginit();
 892 #endif /* PFLOG */
 893
 894 #if NETHER > 0
 895         /* Register the built-in dlil ethernet interface family */
 896         bsd_init_kprintf("calling ether_family_init\n");
 897         ether_family_init();
 898 #endif /* ETHER */
 899
 900 #if NETWORKING
 901         /* Call any kext code that wants to run just after network init */
 902         bsd_init_kprintf("calling net_init_run\n");
 903         net_init_run();
 904
 905 #if CONTENT_FILTER
 906         cfil_init();
 907 #endif
 908
 909 #if PACKET_MANGLER
 910         pkt_mnglr_init();
 911 #endif
 912
 913 #if NECP
 914         /* Initialize Network Extension Control Policies */
 915         necp_init();
 916 #endif
 917
 918         netagent_init();
 919
 920         /* register user tunnel kernel control handler */
 921         utun_register_control();
 922 #if IPSEC
 923         ipsec_register_control();
 924 #endif /* IPSEC */
 925         netsrc_init();
 926         nstat_init();
 927         tcp_cc_init();
 928 #if MPTCP
 929         mptcp_control_register();
 930 #endif /* MPTCP */
 931 #endif /* NETWORKING */
 932
 933         bsd_init_kprintf("calling vnode_pager_bootstrap\n");
 934         vnode_pager_bootstrap();
 935
 936         bsd_init_kprintf("calling inittodr\n");
 937         inittodr(0);
 938
 939         /* Mount the root file system. */
 940         while( TRUE) {
 941                 int err;
 942
 943                 bsd_init_kprintf("calling setconf\n");
 944                 setconf();
 945 #if NFSCLIENT
 946                 netboot = (mountroot == netboot_mountroot);
 947 #endif
 948
 949                 bsd_init_kprintf("vfs_mountroot\n");
 950                 if (0 == (err = vfs_mountroot()))
 951                         break;
 952                 rootdevice[0] = '\0';
 953 #if NFSCLIENT
 954                 if (netboot) {
 955                         PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
 956                         vc_progress_set(FALSE, 0);
 957                         for (i=1; 1; i*=2) {
 958                                 printf("bsd_init: failed to mount network root, error %d, %s\n",
 959                                         err, PE_boot_args());
 960                                 printf("We are hanging here...\n");
 961                                 IOSleep(i*60*1000);
 962                         }
 963                         /*NOTREACHED*/
 964                 }
 965 #endif
 966                 printf("cannot mount root, errno = %d\n", err);
 967                 boothowto |= RB_ASKNAME;
 968         }
 969
 970         IOSecureBSDRoot(rootdevice);
 971
 972         context.vc_thread = current_thread();
 973         context.vc_ucred = kernproc->p_ucred;
 974         mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
 975
 976         bsd_init_kprintf("calling VFS_ROOT\n");
 977         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 978         if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
 979                 panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
 980         rootvnode->v_flag |= VROOT;
 981         (void)vnode_ref(rootvnode);
 982         (void)vnode_put(rootvnode);
 983         filedesc0.fd_cdir = rootvnode;
 984
 985 #if NFSCLIENT
 986         if (netboot) {
 987                 int err;
 988
 989                 netboot = TRUE;
 990                 /* post mount setup */
 991                 if ((err = netboot_setup()) != 0) {
 992                         PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
 993                         vc_progress_set(FALSE, 0);
 994                         for (i=1; 1; i*=2) {
 995                                 printf("bsd_init: NetBoot could not find root, error %d: %s\n",
 996                                         err, PE_boot_args());
 997                                 printf("We are hanging here...\n");
 998                                 IOSleep(i*60*1000);
 999                         }
1000                         /*NOTREACHED*/
1001                 }
1002         }
1003 #endif
1004
1005
1006 #if CONFIG_IMAGEBOOT
1007         /*
1008          * See if a system disk image is present. If so, mount it and
1009          * switch the root vnode to point to it
1010          */
1011         if (netboot == FALSE && imageboot_needed()) {
1012                 /*
1013                  * An image was found.  No turning back: we're booted
1014                  * with a kernel from the disk image.
1015                  */
1016                 imageboot_setup();
1017         }
1018 #endif /* CONFIG_IMAGEBOOT */
1019
1020         /* set initial time; all other resource data is  already zero'ed */
1021         microtime_with_abstime(&kernproc->p_start, &kernproc->p_stats->ps_start);
1022
1023 #if DEVFS
1024         {
1025             char mounthere[] = "/dev";  /* !const because of internal casting */
1026
1027             bsd_init_kprintf("calling devfs_kernel_mount\n");
1028             devfs_kernel_mount(mounthere);
1029         }
1030 #endif /* DEVFS */
1031
1032         /* Initialize signal state for process 0. */
1033         bsd_init_kprintf("calling siginit\n");
1034         siginit(kernproc);
1035
1036         bsd_init_kprintf("calling bsd_utaskbootstrap\n");
1037         bsd_utaskbootstrap();
1038
1039         pal_kernel_announce();
1040
1041         bsd_init_kprintf("calling mountroot_post_hook\n");
1042
1043         /* invoke post-root-mount hook */
1044         if (mountroot_post_hook != NULL)
1045                 mountroot_post_hook();
1046
1047 #if 0 /* not yet */
1048         consider_zone_gc(FALSE);
1049 #endif
1050
1051         bsd_init_kprintf("done\n");
1052 }
1053
1054 void
1055 bsdinit_task(void)
1056 {
1057         proc_t p = current_proc();
1058         struct uthread *ut;
1059         thread_t thread;
1060
1061         process_name("init", p);
1062
1063         ux_handler_init();
1064
1065         thread = current_thread();
1066         (void) host_set_exception_ports(host_priv_self(),
1067                                         EXC_MASK_ALL & ~(EXC_MASK_RPC_ALERT),//pilotfish (shark) needs this port
1068                                         (mach_port_t) ux_exception_port,
1069                                         EXCEPTION_DEFAULT| MACH_EXCEPTION_CODES,
1070                                         0);
1071
1072         ut = (uthread_t)get_bsdthread_info(thread);
1073
1074 #if CONFIG_MACF
1075         mac_cred_label_associate_user(p->p_ucred);
1076 #endif
1077
1078     vm_init_before_launchd();
1079
1080
1081         bsd_init_kprintf("bsd_do_post - done");
1082
1083         load_init_program(p);
1084         lock_trace = 1;
1085 }
1086
1087 kern_return_t
1088 bsd_autoconf(void)
1089 {
1090         kprintf("bsd_autoconf: calling kminit\n");
1091         kminit();
1092
1093         /*
1094          * Early startup for bsd pseudodevices.
1095          */
1096         {
1097             struct pseudo_init *pi;
1098
1099             for (pi = pseudo_inits; pi->ps_func; pi++)
1100                 (*pi->ps_func) (pi->ps_count);
1101         }
1102
1103         return( IOKitBSDInit());
1104 }
1105
1106
1107 #include <sys/disklabel.h>  /* for MAXPARTITIONS */
1108
1109 static void
1110 setconf(void)
1111 {
1112         u_int32_t       flags;
1113         kern_return_t   err;
1114
1115         err = IOFindBSDRoot(rootdevice, sizeof(rootdevice), &rootdev, &flags);
1116         if( err) {
1117                 printf("setconf: IOFindBSDRoot returned an error (%d);"
1118                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
1119                 rootdev = makedev( 6, 0 );
1120                 strlcpy(rootdevice, "sd0a", sizeof(rootdevice));
1121                 flags = 0;
1122         }
1123
1124 #if NFSCLIENT
1125         if( flags & 1 ) {
1126                 /* network device */
1127                 mountroot = netboot_mountroot;
1128         } else {
1129 #endif
1130                 /* otherwise have vfs determine root filesystem */
1131                 mountroot = NULL;
1132 #if NFSCLIENT
1133         }
1134 #endif
1135
1136 }
1137
1138 void
1139 bsd_utaskbootstrap(void)
1140 {
1141         thread_t thread;
1142         struct uthread *ut;
1143
1144         /*
1145          * Clone the bootstrap process from the kernel process, without
1146          * inheriting either task characteristics or memory from the kernel;
1147          */
1148         thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE);
1149
1150         /* Hold the reference as it will be dropped during shutdown */
1151         initproc = proc_find(1);
1152 #if __PROC_INTERNAL_DEBUG
1153         if (initproc == PROC_NULL)
1154                 panic("bsd_utaskbootstrap: initproc not set\n");
1155 #endif
1156         /*
1157          * Since we aren't going back out the normal way to our parent,
1158          * we have to drop the transition locks explicitly.
1159          */
1160         proc_signalend(initproc, 0);
1161         proc_transend(initproc, 0);
1162
1163         ut = (struct uthread *)get_bsdthread_info(thread);
1164         ut->uu_sigmask = 0;
1165         act_set_astbsd(thread);
1166         task_clear_return_wait(get_threadtask(thread));
1167 }
1168
1169 static void
1170 parse_bsd_args(void)
1171 {
1172         char namep[16];
1173         int msgbuf;
1174
1175         if ( PE_parse_boot_argn("-s", namep, sizeof (namep)))
1176                 boothowto |= RB_SINGLE;
1177
1178         if (PE_parse_boot_argn("-b", namep, sizeof (namep)))
1179                 boothowto |= RB_NOBOOTRC;
1180
1181         if (PE_parse_boot_argn("-x", namep, sizeof (namep))) /* safe boot */
1182                 boothowto |= RB_SAFEBOOT;
1183
1184         if (PE_parse_boot_argn("-minimalboot", namep, sizeof(namep))) {
1185                 /*
1186                  * -minimalboot indicates that we want userspace to be bootstrapped to a
1187                  * minimal environment.  What constitutes minimal is up to the bootstrap
1188                  * process.
1189                  */
1190                 minimalboot = 1;
1191         }
1192
1193 #if __arm64__
1194         /* disable 64 bit grading */
1195         if (PE_parse_boot_argn("-no64exec", namep, sizeof (namep)))
1196                 bootarg_no64exec = 1;
1197 #endif
1198
1199         /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */
1200         if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof (namep)))
1201                 bootarg_vnode_cache_defeat = 1;
1202
1203 #if DEVELOPMENT || DEBUG
1204         if (PE_parse_boot_argn("-disable_aslr", namep, sizeof (namep)))
1205                 bootarg_disable_aslr = 1;
1206 #endif
1207
1208         PE_parse_boot_argn("ncl", &ncl, sizeof (ncl));
1209         if (PE_parse_boot_argn("nbuf", &max_nbuf_headers,
1210                                 sizeof (max_nbuf_headers))) {
1211                 customnbuf = 1;
1212         }
1213
1214 #if CONFIG_MACF
1215 #if defined (__i386__) || defined (__x86_64__)
1216         PE_parse_boot_argn("policy_check", &policy_check_flags, sizeof (policy_check_flags));
1217 #endif
1218 #endif  /* CONFIG_MACF */
1219
1220         if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof (msgbuf))) {
1221                 log_setsize(msgbuf);
1222                 oslog_setsize(msgbuf);
1223         }
1224
1225         if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) {
1226                 nc_disabled = 1;
1227         }
1228
1229 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
1230         if (PE_parse_boot_argn("-no_vnode_jetsam", namep, sizeof(namep)))
1231                  bootarg_no_vnode_jetsam = 1;
1232 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
1233
1234
1235 #if CONFIG_EMBEDDED
1236         /*
1237          * The darkboot flag is specified by the bootloader and is stored in
1238          * boot_args->bootFlags. This flag is available starting revision 2.
1239          */
1240         boot_args *args = (boot_args *) PE_state.bootArgs;
1241         if ((args != NULL) && (args->Revision >= kBootArgsRevision2)) {
1242                 darkboot = (args->bootFlags & kBootFlagsDarkBoot) ? 1 : 0;
1243         } else {
1244                 darkboot = 0;
1245         }
1246 #endif
1247
1248 #if PROC_REF_DEBUG
1249         if (PE_parse_boot_argn("-disable_procref_tracking", namep, sizeof(namep))) {
1250                 proc_ref_tracking_disabled = 1;
1251         }
1252 #endif
1253
1254 #if OS_REASON_DEBUG
1255         if (PE_parse_boot_argn("-disable_osreason_debug", namep, sizeof(namep))) {
1256                 os_reason_debug_disabled = 1;
1257         }
1258 #endif
1259
1260         PE_parse_boot_argn("sigrestrict", &sigrestrict_arg, sizeof(sigrestrict_arg));
1261
1262 #if DEVELOPMENT|| DEBUG
1263         if (PE_parse_boot_argn("-no_sigsys", namep, sizeof(namep))) {
1264                 send_sigsys = false;
1265         }
1266 #endif
1267
1268 #if (DEVELOPMENT|| DEBUG)
1269         if (PE_parse_boot_argn("alt-dyld", dyld_alt_path, sizeof(dyld_alt_path))) {
1270         if (strlen(dyld_alt_path) > 0) {
1271             use_alt_dyld = 1;
1272         }
1273         }
1274 #endif
1275 }
1276
1277 void
1278 bsd_exec_setup(int scale)
1279 {
1280
1281         switch (scale) {
1282                 case 0:
1283                 case 1:
1284                         bsd_simul_execs = BSD_SIMUL_EXECS;
1285                         break;
1286                 case 2:
1287                 case 3:
1288                         bsd_simul_execs = 65;
1289                         break;
1290                 case 4:
1291                 case 5:
1292                         bsd_simul_execs = 129;
1293                         break;
1294                 case 6:
1295                 case 7:
1296                         bsd_simul_execs = 257;
1297                         break;
1298                 default:
1299                         bsd_simul_execs = 513;
1300                         break;
1301
1302         }
1303         bsd_pageable_map_size = (bsd_simul_execs * BSD_PAGEABLE_SIZE_PER_EXEC);
1304 }
1305
1306 #if !NFSCLIENT
1307 int
1308 netboot_root(void);
1309
1310 int
1311 netboot_root(void)
1312 {
1313         return(0);
1314 }
1315 #endif