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 <kern/ux_handler.h> /* for ux_handler_setup() */
111
112#include <mach/vm_param.h>
113
114#include <vm/vm_map.h>
115#include <vm/vm_kern.h>
116
117#include <sys/reboot.h>
118#include <dev/busvar.h> /* for pseudo_inits */
119#include <sys/kdebug.h>
120#include <sys/monotonic.h>
121#include <sys/reason.h>
122
123#include <mach/mach_types.h>
124#include <mach/vm_prot.h>
125#include <mach/semaphore.h>
126#include <mach/sync_policy.h>
127#include <kern/clock.h>
128#include <mach/kern_return.h>
129#include <mach/thread_act.h> /* for thread_resume() */
130#include <sys/ubc_internal.h> /* for ubc_init() */
131#include <sys/mcache.h> /* for mcache_init() */
132#include <sys/mbuf.h> /* for mbinit() */
133#include <sys/event.h> /* for knote_init() */
134#include <sys/eventhandler.h> /* for eventhandler_init() */
135#include <sys/kern_memorystatus.h> /* for memorystatus_init() */
136#include <sys/aio_kern.h> /* for aio_init() */
137#include <sys/semaphore.h> /* for psem_cache_init() */
138#include <net/dlil.h> /* for dlil_init() */
139#include <net/kpi_protocol.h> /* for proto_kpi_init() */
140#include <net/iptap.h> /* for iptap_init() */
141#include <sys/pipe.h> /* for pipeinit() */
142#include <sys/socketvar.h> /* for socketinit() */
143#include <sys/protosw.h> /* for domaininit() */
144#include <kern/sched_prim.h> /* for thread_wakeup() */
145#include <net/if_ether.h> /* for ether_family_init() */
146#include <net/if_gif.h> /* for gif_init() */
147#include <vm/vm_protos.h> /* for vnode_pager_bootstrap() */
148#include <miscfs/devfs/devfsdefs.h> /* for devfs_kernel_mount() */
149#include <vm/vm_kern.h> /* for kmem_suballoc() */
150#include <sys/semaphore.h> /* for psem_lock_init() */
151#include <sys/msgbuf.h> /* for log_setsize() */
152#include <sys/tty.h> /* for tty_init() */
153#include <sys/proc_uuid_policy.h> /* proc_uuid_policy_init() */
154#include <netinet/flow_divert.h> /* flow_divert_init() */
155#include <net/content_filter.h> /* for cfil_init() */
156#include <net/necp.h> /* for necp_init() */
157#include <net/network_agent.h> /* for netagent_init() */
158#include <net/packet_mangler.h> /* for pkt_mnglr_init() */
159#include <net/if_utun.h> /* for utun_register_control() */
160#include <net/if_ipsec.h> /* for ipsec_register_control() */
161#include <net/net_str_id.h> /* for net_str_id_init() */
162#include <net/netsrc.h> /* for netsrc_init() */
163#include <net/ntstat.h> /* for nstat_init() */
164#include <netinet/tcp_cc.h> /* for tcp_cc_init() */
165#include <netinet/mptcp_var.h> /* for mptcp_control_register() */
166#include <net/nwk_wq.h> /* for nwk_wq_init */
167#include <kern/assert.h> /* for assert() */
168#include <sys/kern_overrides.h> /* for init_system_override() */
169
170#include <net/init.h>
171
172#if CONFIG_MACF
173#include <security/mac_framework.h>
174#include <security/mac_internal.h> /* mac_init_bsd() */
175#include <security/mac_mach_internal.h> /* mac_update_task_label() */
176#endif
177
178#include <machine/exec.h>
179
180#if NFSCLIENT
181#include <sys/netboot.h>
182#endif
183
184#if CONFIG_IMAGEBOOT
185#include <sys/imageboot.h>
186#endif
187
188#if PFLOG
189#include <net/if_pflog.h>
190#endif
191
192
193#include <pexpert/pexpert.h>
194#include <machine/pal_routines.h>
195#include <console/video_console.h>
196
197#if CONFIG_XNUPOST
198#include <tests/xnupost.h>
199#endif
200
201void * get_user_regs(thread_t); /* XXX kludge for <machine/thread.h> */
202void IOKitInitializeTime(void); /* XXX */
203void IOSleep(unsigned int); /* XXX */
204void loopattach(void); /* XXX */
205
206const char copyright[] =
207"Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
208"The Regents of the University of California. "
209"All rights reserved.\n\n";
210
211/* Components of the first process -- never freed. */
212struct proc proc0;
213struct session session0;
214struct pgrp pgrp0;
215struct filedesc filedesc0;
216struct plimit limit0;
217struct pstats pstats0;
218struct sigacts sigacts0;
219proc_t kernproc;
220proc_t initproc;
221
222long tk_cancc;
223long tk_nin;
224long tk_nout;
225long tk_rawcc;
226
227int lock_trace = 0;
228/* Global variables to make pstat happy. We do swapping differently */
229int nswdev, nswap;
230int nswapmap;
231void *swapmap;
232struct swdevt swdevt[1];
233
234dev_t rootdev; /* device of the root */
235dev_t dumpdev; /* device to take dumps on */
236long dumplo; /* offset into dumpdev */
237long hostid;
238char hostname[MAXHOSTNAMELEN];
239int hostnamelen;
240char domainname[MAXDOMNAMELEN];
241int domainnamelen;
242
243char rootdevice[DEVMAXNAMESIZE];
244
245#if KMEMSTATS
246struct kmemstats kmemstats[M_LAST];
247#endif
248
249struct vnode *rootvp;
250int boothowto = RB_DEBUG;
251int minimalboot = 0;
252#if CONFIG_EMBEDDED
253int darkboot = 0;
254#endif
255
256#if PROC_REF_DEBUG
257__private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */
258#endif
259
260#if OS_REASON_DEBUG
261__private_extern__ int os_reason_debug_disabled = 0; /* disable asserts for when we fail to allocate OS reasons */
262#endif
263
264extern kern_return_t IOFindBSDRoot(char *, unsigned int, dev_t *, u_int32_t *);
265extern void IOSecureBSDRoot(const char * rootName);
266extern kern_return_t IOKitBSDInit(void );
267extern void kminit(void);
268extern void file_lock_init(void);
269extern void kmeminit(void);
270extern void bsd_bufferinit(void);
271extern void oslog_setsize(int size);
272extern void throttle_init(void);
273extern void acct_init(void);
274
275extern int serverperfmode;
276extern int ncl;
277
278vm_map_t bsd_pageable_map;
279vm_map_t mb_map;
280
281static int bsd_simul_execs;
282static int bsd_pageable_map_size;
283__private_extern__ int execargs_cache_size = 0;
284__private_extern__ int execargs_free_count = 0;
285__private_extern__ vm_offset_t * execargs_cache = NULL;
286
287void bsd_exec_setup(int);
288
289#if __arm64__
290__private_extern__ int bootarg_no64exec = 0;
291#endif
292#if __x86_64__
293__private_extern__ int bootarg_no32exec = 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
313char dyld_alt_path[MAXPATHLEN];
314int use_alt_dyld = 0;
315#endif
316
317int cmask = CMASK;
318extern int customnbuf;
319
320kern_return_t bsd_autoconf(void);
321void bsd_utaskbootstrap(void);
322
323static void parse_bsd_args(void);
324#if CONFIG_DEV_KMEM
325extern void dev_kmem_init(void);
326#endif
327extern void time_zone_slock_init(void);
328extern void select_waitq_init(void);
329static void process_name(const char *, proc_t);
330
331static void setconf(void);
332
333#if SYSV_SHM
334extern void sysv_shm_lock_init(void);
335#endif
336#if SYSV_SEM
337extern void sysv_sem_lock_init(void);
338#endif
339#if SYSV_MSG
340extern void sysv_msg_lock_init(void);
341#endif
342
343extern 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 */
348int policy_check_flags = 0;
349
350extern 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 */
374static void
375process_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>
383struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ - PAGE_MAX_SIZE };
384struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
385struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
386
387extern thread_t cloneproc(task_t, coalition_t, proc_t, int, int);
388extern int (*mountroot)(void);
389
390lck_grp_t * proc_lck_grp;
391lck_grp_t * proc_slock_grp;
392lck_grp_t * proc_fdmlock_grp;
393lck_grp_t * proc_kqhashlock_grp;
394lck_grp_t * proc_knhashlock_grp;
395lck_grp_t * proc_ucred_mlock_grp;
396lck_grp_t * proc_mlock_grp;
397lck_grp_attr_t * proc_lck_grp_attr;
398lck_attr_t * proc_lck_attr;
399lck_mtx_t * proc_list_mlock;
400lck_mtx_t * proc_klist_mlock;
401
402#if CONFIG_XNUPOST
403lck_grp_t * sysctl_debug_test_stackshot_owner_grp;
404lck_mtx_t * sysctl_debug_test_stackshot_owner_init_mtx;
405#endif /* !CONFIG_XNUPOST */
406
407extern lck_mtx_t * execargs_cache_lock;
408
409/* hook called after root is mounted XXX temporary hack */
410void (*mountroot_post_hook)(void);
411void (*unmountroot_pre_hook)(void);
412
413/*
414 * This function is called before IOKit initialization, so that globals
415 * like the sysctl tree are initialized before kernel extensions
416 * are started (since they may want to register sysctls
417 */
418void
419bsd_early_init(void)
420{
421 sysctl_early_init();
422}
423
424/*
425 * This function is called very early on in the Mach startup, from the
426 * function start_kernel_threads() in osfmk/kern/startup.c. It's called
427 * in the context of the current (startup) task using a call to the
428 * function kernel_thread_create() to jump into start_kernel_threads().
429 * Internally, kernel_thread_create() calls thread_create_internal(),
430 * which calls uthread_alloc(). The function of uthread_alloc() is
431 * normally to allocate a uthread structure, and fill out the uu_sigmask,
432 * uu_context fields. It skips filling these out in the case of the "task"
433 * being "kernel_task", because the order of operation is inverted. To
434 * account for that, we need to manually fill in at least the contents
435 * of the uu_context.vc_ucred field so that the uthread structure can be
436 * used like any other.
437 */
438
439void
440bsd_init(void)
441{
442 struct uthread *ut;
443 unsigned int i;
444 struct vfs_context context;
445 kern_return_t ret;
446 struct ucred temp_cred;
447 struct posix_cred temp_pcred;
448#if NFSCLIENT || CONFIG_IMAGEBOOT
449 boolean_t netboot = FALSE;
450#endif
451
452#define bsd_init_kprintf(x...) /* kprintf("bsd_init: " x) */
453
454 throttle_init();
455
456 printf(copyright);
457
458 bsd_init_kprintf("calling kmeminit\n");
459 kmeminit();
460
461 bsd_init_kprintf("calling parse_bsd_args\n");
462 parse_bsd_args();
463
464#if CONFIG_DEV_KMEM
465 bsd_init_kprintf("calling dev_kmem_init\n");
466 dev_kmem_init();
467#endif
468
469 /* Initialize kauth subsystem before instancing the first credential */
470 bsd_init_kprintf("calling kauth_init\n");
471 kauth_init();
472
473 /* Initialize process and pgrp structures. */
474 bsd_init_kprintf("calling procinit\n");
475 procinit();
476
477 /* Initialize the ttys (MUST be before kminit()/bsd_autoconf()!)*/
478 tty_init();
479
480 kernproc = &proc0; /* implicitly bzero'ed */
481
482 /* kernel_task->proc = kernproc; */
483 set_bsdtask_info(kernel_task,(void *)kernproc);
484
485 /* give kernproc a name */
486 bsd_init_kprintf("calling process_name\n");
487 process_name("kernel_task", kernproc);
488
489 /* allocate proc lock group attribute and group */
490 bsd_init_kprintf("calling lck_grp_attr_alloc_init\n");
491 proc_lck_grp_attr= lck_grp_attr_alloc_init();
492
493 proc_lck_grp = lck_grp_alloc_init("proc", proc_lck_grp_attr);
494
495#if CONFIG_FINE_LOCK_GROUPS
496 proc_slock_grp = lck_grp_alloc_init("proc-slock", proc_lck_grp_attr);
497 proc_ucred_mlock_grp = lck_grp_alloc_init("proc-ucred-mlock", proc_lck_grp_attr);
498 proc_mlock_grp = lck_grp_alloc_init("proc-mlock", proc_lck_grp_attr);
499 proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock", proc_lck_grp_attr);
500#endif
501 proc_kqhashlock_grp = lck_grp_alloc_init("proc-kqhashlock", proc_lck_grp_attr);
502 proc_knhashlock_grp = lck_grp_alloc_init("proc-knhashlock", proc_lck_grp_attr);
503#if CONFIG_XNUPOST
504 sysctl_debug_test_stackshot_owner_grp = lck_grp_alloc_init("test-stackshot-owner-grp", LCK_GRP_ATTR_NULL);
505 sysctl_debug_test_stackshot_owner_init_mtx = lck_mtx_alloc_init(
506 sysctl_debug_test_stackshot_owner_grp,
507 LCK_ATTR_NULL);
508#endif /* !CONFIG_XNUPOST */
509 /* Allocate proc lock attribute */
510 proc_lck_attr = lck_attr_alloc_init();
511#if 0
512#if __PROC_INTERNAL_DEBUG
513 lck_attr_setdebug(proc_lck_attr);
514#endif
515#endif
516
517#if CONFIG_FINE_LOCK_GROUPS
518 proc_list_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
519 proc_klist_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
520 lck_mtx_init(&kernproc->p_mlock, proc_mlock_grp, proc_lck_attr);
521 lck_mtx_init(&kernproc->p_fdmlock, proc_fdmlock_grp, proc_lck_attr);
522 lck_mtx_init(&kernproc->p_ucred_mlock, proc_ucred_mlock_grp, proc_lck_attr);
523 lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr);
524#else
525 proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
526 proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
527 lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
528 lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);
529 lck_mtx_init(&kernproc->p_ucred_mlock, proc_lck_grp, proc_lck_attr);
530 lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
531#endif
532
533 assert(bsd_simul_execs != 0);
534 execargs_cache_lock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
535 execargs_cache_size = bsd_simul_execs;
536 execargs_free_count = bsd_simul_execs;
537 execargs_cache = (vm_offset_t *)kalloc(bsd_simul_execs * sizeof(vm_offset_t));
538 bzero(execargs_cache, bsd_simul_execs * sizeof(vm_offset_t));
539
540 if (current_task() != kernel_task)
541 printf("bsd_init: We have a problem, "
542 "current task is not kernel task\n");
543
544 bsd_init_kprintf("calling get_bsdthread_info\n");
545 ut = (uthread_t)get_bsdthread_info(current_thread());
546
547#if CONFIG_MACF
548 /*
549 * Initialize the MAC Framework
550 */
551 mac_policy_initbsd();
552
553#if defined (__i386__) || defined (__x86_64__)
554 /*
555 * We currently only support this on i386/x86_64, as that is the
556 * only lock code we have instrumented so far.
557 */
558 check_policy_init(policy_check_flags);
559#endif
560#endif /* MAC */
561
562 ulock_initialize();
563
564 /*
565 * Create process 0.
566 */
567 proc_list_lock();
568 LIST_INSERT_HEAD(&allproc, kernproc, p_list);
569 kernproc->p_pgrp = &pgrp0;
570 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
571 LIST_INIT(&pgrp0.pg_members);
572#ifdef CONFIG_FINE_LOCK_GROUPS
573 lck_mtx_init(&pgrp0.pg_mlock, proc_mlock_grp, proc_lck_attr);
574#else
575 lck_mtx_init(&pgrp0.pg_mlock, proc_lck_grp, proc_lck_attr);
576#endif
577 /* There is no other bsd thread this point and is safe without pgrp lock */
578 LIST_INSERT_HEAD(&pgrp0.pg_members, kernproc, p_pglist);
579 kernproc->p_listflag |= P_LIST_INPGRP;
580 kernproc->p_pgrpid = 0;
581 kernproc->p_uniqueid = 0;
582
583 pgrp0.pg_session = &session0;
584 pgrp0.pg_membercnt = 1;
585
586 session0.s_count = 1;
587 session0.s_leader = kernproc;
588 session0.s_listflags = 0;
589#ifdef CONFIG_FINE_LOCK_GROUPS
590 lck_mtx_init(&session0.s_mlock, proc_mlock_grp, proc_lck_attr);
591#else
592 lck_mtx_init(&session0.s_mlock, proc_lck_grp, proc_lck_attr);
593#endif
594 LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
595 proc_list_unlock();
596
597#if CONFIG_PERSONAS
598 kernproc->p_persona = NULL;
599#endif
600
601 kernproc->task = kernel_task;
602
603 kernproc->p_stat = SRUN;
604 kernproc->p_flag = P_SYSTEM;
605 kernproc->p_lflag = 0;
606 kernproc->p_ladvflag = 0;
607
608#if defined(__LP64__)
609 kernproc->p_flag |= P_LP64;
610#endif
611
612#if DEVELOPMENT || DEBUG
613 if (bootarg_disable_aslr)
614 kernproc->p_flag |= P_DISABLE_ASLR;
615#endif
616
617 kernproc->p_nice = NZERO;
618 kernproc->p_pptr = kernproc;
619
620 TAILQ_INIT(&kernproc->p_uthlist);
621 TAILQ_INSERT_TAIL(&kernproc->p_uthlist, ut, uu_list);
622
623 kernproc->sigwait = FALSE;
624 kernproc->sigwait_thread = THREAD_NULL;
625 kernproc->exit_thread = THREAD_NULL;
626 kernproc->p_csflags = CS_VALID;
627
628 /*
629 * Create credential. This also Initializes the audit information.
630 */
631 bsd_init_kprintf("calling bzero\n");
632 bzero(&temp_cred, sizeof(temp_cred));
633 bzero(&temp_pcred, sizeof(temp_pcred));
634 temp_pcred.cr_ngroups = 1;
635 /* kern_proc, shouldn't call up to DS for group membership */
636 temp_pcred.cr_flags = CRF_NOMEMBERD;
637 temp_cred.cr_audit.as_aia_p = audit_default_aia_p;
638
639 bsd_init_kprintf("calling kauth_cred_create\n");
640 /*
641 * We have to label the temp cred before we create from it to
642 * properly set cr_ngroups, or the create will fail.
643 */
644 posix_cred_label(&temp_cred, &temp_pcred);
645 kernproc->p_ucred = kauth_cred_create(&temp_cred);
646
647 /* update cred on proc */
648 PROC_UPDATE_CREDS_ONPROC(kernproc);
649
650 /* give the (already exisiting) initial thread a reference on it */
651 bsd_init_kprintf("calling kauth_cred_ref\n");
652 kauth_cred_ref(kernproc->p_ucred);
653 ut->uu_context.vc_ucred = kernproc->p_ucred;
654 ut->uu_context.vc_thread = current_thread();
655
656 TAILQ_INIT(&kernproc->p_aio_activeq);
657 TAILQ_INIT(&kernproc->p_aio_doneq);
658 kernproc->p_aio_total_count = 0;
659 kernproc->p_aio_active_count = 0;
660
661 bsd_init_kprintf("calling file_lock_init\n");
662 file_lock_init();
663
664#if CONFIG_MACF
665 mac_cred_label_associate_kernel(kernproc->p_ucred);
666#endif
667
668 /* Create the file descriptor table. */
669 kernproc->p_fd = &filedesc0;
670 filedesc0.fd_cmask = cmask;
671 filedesc0.fd_knlistsize = -1;
672 filedesc0.fd_knlist = NULL;
673 filedesc0.fd_knhash = NULL;
674 filedesc0.fd_knhashmask = 0;
675 lck_mtx_init(&filedesc0.fd_kqhashlock, proc_kqhashlock_grp, proc_lck_attr);
676 lck_mtx_init(&filedesc0.fd_knhashlock, proc_knhashlock_grp, proc_lck_attr);
677
678 /* Create the limits structures. */
679 kernproc->p_limit = &limit0;
680 for (i = 0; i < sizeof(kernproc->p_rlimit)/sizeof(kernproc->p_rlimit[0]); i++)
681 limit0.pl_rlimit[i].rlim_cur =
682 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
683 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
684 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = maxprocperuid;
685 limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
686 limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
687 limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
688 limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
689 limit0.pl_refcnt = 1;
690
691 kernproc->p_stats = &pstats0;
692 kernproc->p_sigacts = &sigacts0;
693
694 /*
695 * Charge root for one process: launchd.
696 */
697 bsd_init_kprintf("calling chgproccnt\n");
698 (void)chgproccnt(0, 1);
699
700 /*
701 * Allocate a kernel submap for pageable memory
702 * for temporary copying (execve()).
703 */
704 {
705 vm_offset_t minimum;
706
707 bsd_init_kprintf("calling kmem_suballoc\n");
708 assert(bsd_pageable_map_size != 0);
709 ret = kmem_suballoc(kernel_map,
710 &minimum,
711 (vm_size_t)bsd_pageable_map_size,
712 TRUE,
713 VM_FLAGS_ANYWHERE,
714 VM_MAP_KERNEL_FLAGS_NONE,
715 VM_KERN_MEMORY_BSD,
716 &bsd_pageable_map);
717 if (ret != KERN_SUCCESS)
718 panic("bsd_init: Failed to allocate bsd pageable map");
719 }
720
721 bsd_init_kprintf("calling fpxlog_init\n");
722 fpxlog_init();
723
724 /*
725 * Initialize buffers and hash links for buffers
726 *
727 * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
728 * happen after a credential has been associated with
729 * the kernel task.
730 */
731 bsd_init_kprintf("calling bsd_bufferinit\n");
732 bsd_bufferinit();
733
734 /*
735 * Initialize the calendar.
736 */
737 bsd_init_kprintf("calling IOKitInitializeTime\n");
738 IOKitInitializeTime();
739
740 bsd_init_kprintf("calling ubc_init\n");
741 ubc_init();
742
743 /* Initialize the file systems. */
744 bsd_init_kprintf("calling vfsinit\n");
745 vfsinit();
746
747#if CONFIG_PROC_UUID_POLICY
748 /* Initial proc_uuid_policy subsystem */
749 bsd_init_kprintf("calling proc_uuid_policy_init()\n");
750 proc_uuid_policy_init();
751#endif
752
753#if SOCKETS
754 /* Initialize per-CPU cache allocator */
755 mcache_init();
756
757 /* Initialize mbuf's. */
758 bsd_init_kprintf("calling mbinit\n");
759 mbinit();
760 net_str_id_init(); /* for mbuf tags */
761#endif /* SOCKETS */
762
763 /*
764 * Initializes security event auditing.
765 * XXX: Should/could this occur later?
766 */
767#if CONFIG_AUDIT
768 bsd_init_kprintf("calling audit_init\n");
769 audit_init();
770#endif
771
772 /* Initialize kqueues */
773 bsd_init_kprintf("calling knote_init\n");
774 knote_init();
775
776 /* Initialize event handler */
777 bsd_init_kprintf("calling eventhandler_init\n");
778 eventhandler_init();
779
780 /* Initialize for async IO */
781 bsd_init_kprintf("calling aio_init\n");
782 aio_init();
783
784 /* Initialize pipes */
785 bsd_init_kprintf("calling pipeinit\n");
786 pipeinit();
787
788 /* Initialize SysV shm subsystem locks; the subsystem proper is
789 * initialized through a sysctl.
790 */
791#if SYSV_SHM
792 bsd_init_kprintf("calling sysv_shm_lock_init\n");
793 sysv_shm_lock_init();
794#endif
795#if SYSV_SEM
796 bsd_init_kprintf("calling sysv_sem_lock_init\n");
797 sysv_sem_lock_init();
798#endif
799#if SYSV_MSG
800 bsd_init_kprintf("sysv_msg_lock_init\n");
801 sysv_msg_lock_init();
802#endif
803 bsd_init_kprintf("calling pshm_lock_init\n");
804 pshm_lock_init();
805 bsd_init_kprintf("calling psem_lock_init\n");
806 psem_lock_init();
807
808 pthread_init();
809 /* POSIX Shm and Sem */
810 bsd_init_kprintf("calling pshm_cache_init\n");
811 pshm_cache_init();
812 bsd_init_kprintf("calling psem_cache_init\n");
813 psem_cache_init();
814 bsd_init_kprintf("calling time_zone_slock_init\n");
815 time_zone_slock_init();
816 bsd_init_kprintf("calling select_waitq_init\n");
817 select_waitq_init();
818
819 /*
820 * Initialize protocols. Block reception of incoming packets
821 * until everything is ready.
822 */
823#if NETWORKING
824 bsd_init_kprintf("calling nwk_wq_init\n");
825 nwk_wq_init();
826 bsd_init_kprintf("calling dlil_init\n");
827 dlil_init();
828 bsd_init_kprintf("calling proto_kpi_init\n");
829 proto_kpi_init();
830#endif /* NETWORKING */
831#if SOCKETS
832 bsd_init_kprintf("calling socketinit\n");
833 socketinit();
834 bsd_init_kprintf("calling domaininit\n");
835 domaininit();
836 iptap_init();
837#if FLOW_DIVERT
838 flow_divert_init();
839#endif /* FLOW_DIVERT */
840#endif /* SOCKETS */
841 kernproc->p_fd->fd_cdir = NULL;
842 kernproc->p_fd->fd_rdir = NULL;
843
844#if CONFIG_FREEZE
845#ifndef CONFIG_MEMORYSTATUS
846 #error "CONFIG_FREEZE defined without matching CONFIG_MEMORYSTATUS"
847#endif
848 /* Initialise background freezing */
849 bsd_init_kprintf("calling memorystatus_freeze_init\n");
850 memorystatus_freeze_init();
851#endif
852
853#if CONFIG_MEMORYSTATUS
854 /* Initialize kernel memory status notifications */
855 bsd_init_kprintf("calling memorystatus_init\n");
856 memorystatus_init();
857#endif /* CONFIG_MEMORYSTATUS */
858
859 bsd_init_kprintf("calling acct_init\n");
860 acct_init();
861
862#ifdef GPROF
863 /* Initialize kernel profiling. */
864 kmstartup();
865#endif
866
867 bsd_init_kprintf("calling sysctl_mib_init\n");
868 sysctl_mib_init()
869
870 bsd_init_kprintf("calling bsd_autoconf\n");
871 bsd_autoconf();
872
873 bsd_init_kprintf("calling os_reason_init\n");
874 os_reason_init();
875
876#if CONFIG_DTRACE
877 dtrace_postinit();
878#endif
879
880 /*
881 * We attach the loopback interface *way* down here to ensure
882 * it happens after autoconf(), otherwise it becomes the
883 * "primary" interface.
884 */
885#include <loop.h>
886#if NLOOP > 0
887 bsd_init_kprintf("calling loopattach\n");
888 loopattach(); /* XXX */
889#endif
890#if NGIF
891 /* Initialize gif interface (after lo0) */
892 gif_init();
893#endif
894
895#if PFLOG
896 /* Initialize packet filter log interface */
897 pfloginit();
898#endif /* PFLOG */
899
900#if NETHER > 0
901 /* Register the built-in dlil ethernet interface family */
902 bsd_init_kprintf("calling ether_family_init\n");
903 ether_family_init();
904#endif /* ETHER */
905
906#if NETWORKING
907 /* Call any kext code that wants to run just after network init */
908 bsd_init_kprintf("calling net_init_run\n");
909 net_init_run();
910
911#if CONTENT_FILTER
912 cfil_init();
913#endif
914
915#if PACKET_MANGLER
916 pkt_mnglr_init();
917#endif
918
919#if NECP
920 /* Initialize Network Extension Control Policies */
921 necp_init();
922#endif
923
924 netagent_init();
925
926 /* register user tunnel kernel control handler */
927 utun_register_control();
928#if IPSEC
929 ipsec_register_control();
930#endif /* IPSEC */
931 netsrc_init();
932 nstat_init();
933 tcp_cc_init();
934#if MPTCP
935 mptcp_control_register();
936#endif /* MPTCP */
937#endif /* NETWORKING */
938
939 bsd_init_kprintf("calling vnode_pager_bootstrap\n");
940 vnode_pager_bootstrap();
941
942 bsd_init_kprintf("calling inittodr\n");
943 inittodr(0);
944
945 /* Mount the root file system. */
946 while( TRUE) {
947 int err;
948
949 bsd_init_kprintf("calling setconf\n");
950 setconf();
951#if NFSCLIENT
952 netboot = (mountroot == netboot_mountroot);
953#endif
954
955 bsd_init_kprintf("vfs_mountroot\n");
956 if (0 == (err = vfs_mountroot()))
957 break;
958 rootdevice[0] = '\0';
959#if NFSCLIENT
960 if (netboot) {
961 PE_display_icon( 0, "noroot"); /* XXX a netboot-specific icon would be nicer */
962 vc_progress_set(FALSE, 0);
963 for (i=1; 1; i*=2) {
964 printf("bsd_init: failed to mount network root, error %d, %s\n",
965 err, PE_boot_args());
966 printf("We are hanging here...\n");
967 IOSleep(i*60*1000);
968 }
969 /*NOTREACHED*/
970 }
971#endif
972 printf("cannot mount root, errno = %d\n", err);
973 boothowto |= RB_ASKNAME;
974 }
975
976 IOSecureBSDRoot(rootdevice);
977
978 context.vc_thread = current_thread();
979 context.vc_ucred = kernproc->p_ucred;
980 mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
981
982 bsd_init_kprintf("calling VFS_ROOT\n");
983 /* Get the vnode for '/'. Set fdp->fd_fd.fd_cdir to reference it. */
984 if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
985 panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
986 rootvnode->v_flag |= VROOT;
987 (void)vnode_ref(rootvnode);
988 (void)vnode_put(rootvnode);
989 filedesc0.fd_cdir = rootvnode;
990
991#if NFSCLIENT
992 if (netboot) {
993 int err;
994
995 netboot = TRUE;
996 /* post mount setup */
997 if ((err = netboot_setup()) != 0) {
998 PE_display_icon( 0, "noroot"); /* XXX a netboot-specific icon would be nicer */
999 vc_progress_set(FALSE, 0);
1000 for (i=1; 1; i*=2) {
1001 printf("bsd_init: NetBoot could not find root, error %d: %s\n",
1002 err, PE_boot_args());
1003 printf("We are hanging here...\n");
1004 IOSleep(i*60*1000);
1005 }
1006 /*NOTREACHED*/
1007 }
1008 }
1009#endif
1010
1011
1012#if CONFIG_IMAGEBOOT
1013 /*
1014 * See if a system disk image is present. If so, mount it and
1015 * switch the root vnode to point to it
1016 */
1017 if (netboot == FALSE && imageboot_needed()) {
1018 /*
1019 * An image was found. No turning back: we're booted
1020 * with a kernel from the disk image.
1021 */
1022 imageboot_setup();
1023 }
1024#endif /* CONFIG_IMAGEBOOT */
1025
1026 /* set initial time; all other resource data is already zero'ed */
1027 microtime_with_abstime(&kernproc->p_start, &kernproc->p_stats->ps_start);
1028
1029#if DEVFS
1030 {
1031 char mounthere[] = "/dev"; /* !const because of internal casting */
1032
1033 bsd_init_kprintf("calling devfs_kernel_mount\n");
1034 devfs_kernel_mount(mounthere);
1035 }
1036#endif /* DEVFS */
1037
1038 /* Initialize signal state for process 0. */
1039 bsd_init_kprintf("calling siginit\n");
1040 siginit(kernproc);
1041
1042 bsd_init_kprintf("calling bsd_utaskbootstrap\n");
1043 bsd_utaskbootstrap();
1044
1045 pal_kernel_announce();
1046
1047 bsd_init_kprintf("calling mountroot_post_hook\n");
1048
1049 /* invoke post-root-mount hook */
1050 if (mountroot_post_hook != NULL)
1051 mountroot_post_hook();
1052
1053#if 0 /* not yet */
1054 consider_zone_gc(FALSE);
1055#endif
1056
1057 /* Initialize System Override call */
1058 init_system_override();
1059
1060 bsd_init_kprintf("done\n");
1061}
1062
1063void
1064bsdinit_task(void)
1065{
1066 proc_t p = current_proc();
1067
1068 process_name("init", p);
1069
1070 /* Set up exception-to-signal reflection */
1071 ux_handler_setup();
1072
1073#if CONFIG_MACF
1074 mac_cred_label_associate_user(p->p_ucred);
1075#endif
1076
1077 vm_init_before_launchd();
1078
1079#if CONFIG_XNUPOST
1080 int result = bsd_list_tests();
1081 result = bsd_do_post();
1082 if (result != 0) {
1083 panic("bsd_do_post: Tests failed with result = 0x%08x\n", result);
1084 }
1085#endif
1086
1087 bsd_init_kprintf("bsd_do_post - done");
1088
1089 load_init_program(p);
1090 lock_trace = 1;
1091}
1092
1093kern_return_t
1094bsd_autoconf(void)
1095{
1096 kprintf("bsd_autoconf: calling kminit\n");
1097 kminit();
1098
1099 /*
1100 * Early startup for bsd pseudodevices.
1101 */
1102 {
1103 struct pseudo_init *pi;
1104
1105 for (pi = pseudo_inits; pi->ps_func; pi++)
1106 (*pi->ps_func) (pi->ps_count);
1107 }
1108
1109 return( IOKitBSDInit());
1110}
1111
1112
1113#include <sys/disklabel.h> /* for MAXPARTITIONS */
1114
1115static void
1116setconf(void)
1117{
1118 u_int32_t flags;
1119 kern_return_t err;
1120
1121 err = IOFindBSDRoot(rootdevice, sizeof(rootdevice), &rootdev, &flags);
1122 if( err) {
1123 printf("setconf: IOFindBSDRoot returned an error (%d);"
1124 "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
1125 rootdev = makedev( 6, 0 );
1126 strlcpy(rootdevice, "sd0a", sizeof(rootdevice));
1127 flags = 0;
1128 }
1129
1130#if NFSCLIENT
1131 if( flags & 1 ) {
1132 /* network device */
1133 mountroot = netboot_mountroot;
1134 } else {
1135#endif
1136 /* otherwise have vfs determine root filesystem */
1137 mountroot = NULL;
1138#if NFSCLIENT
1139 }
1140#endif
1141
1142}
1143
1144void
1145bsd_utaskbootstrap(void)
1146{
1147 thread_t thread;
1148 struct uthread *ut;
1149
1150 /*
1151 * Clone the bootstrap process from the kernel process, without
1152 * inheriting either task characteristics or memory from the kernel;
1153 */
1154 thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE);
1155
1156 /* Hold the reference as it will be dropped during shutdown */
1157 initproc = proc_find(1);
1158#if __PROC_INTERNAL_DEBUG
1159 if (initproc == PROC_NULL)
1160 panic("bsd_utaskbootstrap: initproc not set\n");
1161#endif
1162 /*
1163 * Since we aren't going back out the normal way to our parent,
1164 * we have to drop the transition locks explicitly.
1165 */
1166 proc_signalend(initproc, 0);
1167 proc_transend(initproc, 0);
1168
1169 ut = (struct uthread *)get_bsdthread_info(thread);
1170 ut->uu_sigmask = 0;
1171 act_set_astbsd(thread);
1172 task_clear_return_wait(get_threadtask(thread));
1173}
1174
1175static void
1176parse_bsd_args(void)
1177{
1178 char namep[16];
1179 int msgbuf;
1180
1181 if ( PE_parse_boot_argn("-s", namep, sizeof (namep)))
1182 boothowto |= RB_SINGLE;
1183
1184 if (PE_parse_boot_argn("-b", namep, sizeof (namep)))
1185 boothowto |= RB_NOBOOTRC;
1186
1187 if (PE_parse_boot_argn("-x", namep, sizeof (namep))) /* safe boot */
1188 boothowto |= RB_SAFEBOOT;
1189
1190 if (PE_parse_boot_argn("-minimalboot", namep, sizeof(namep))) {
1191 /*
1192 * -minimalboot indicates that we want userspace to be bootstrapped to a
1193 * minimal environment. What constitutes minimal is up to the bootstrap
1194 * process.
1195 */
1196 minimalboot = 1;
1197 }
1198
1199#if __arm64__
1200 /* disable 64 bit grading */
1201 if (PE_parse_boot_argn("-no64exec", namep, sizeof (namep)))
1202 bootarg_no64exec = 1;
1203#endif
1204#if __x86_64__
1205 /* disable 32 bit grading */
1206 if (PE_parse_boot_argn("-no32exec", namep, sizeof (namep)))
1207 bootarg_no32exec = 1;
1208#endif
1209
1210 /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */
1211 if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof (namep)))
1212 bootarg_vnode_cache_defeat = 1;
1213
1214#if DEVELOPMENT || DEBUG
1215 if (PE_parse_boot_argn("-disable_aslr", namep, sizeof (namep)))
1216 bootarg_disable_aslr = 1;
1217#endif
1218
1219 PE_parse_boot_argn("ncl", &ncl, sizeof (ncl));
1220 if (PE_parse_boot_argn("nbuf", &max_nbuf_headers,
1221 sizeof (max_nbuf_headers))) {
1222 customnbuf = 1;
1223 }
1224
1225#if CONFIG_MACF
1226#if defined (__i386__) || defined (__x86_64__)
1227 PE_parse_boot_argn("policy_check", &policy_check_flags, sizeof (policy_check_flags));
1228#endif
1229#endif /* CONFIG_MACF */
1230
1231 if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof (msgbuf))) {
1232 log_setsize(msgbuf);
1233 oslog_setsize(msgbuf);
1234 }
1235
1236 if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) {
1237 nc_disabled = 1;
1238 }
1239
1240#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
1241 if (PE_parse_boot_argn("-no_vnode_jetsam", namep, sizeof(namep)))
1242 bootarg_no_vnode_jetsam = 1;
1243#endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
1244
1245
1246#if CONFIG_EMBEDDED
1247 /*
1248 * The darkboot flag is specified by the bootloader and is stored in
1249 * boot_args->bootFlags. This flag is available starting revision 2.
1250 */
1251 boot_args *args = (boot_args *) PE_state.bootArgs;
1252 if ((args != NULL) && (args->Revision >= kBootArgsRevision2)) {
1253 darkboot = (args->bootFlags & kBootFlagsDarkBoot) ? 1 : 0;
1254 } else {
1255 darkboot = 0;
1256 }
1257#endif
1258
1259#if PROC_REF_DEBUG
1260 if (PE_parse_boot_argn("-disable_procref_tracking", namep, sizeof(namep))) {
1261 proc_ref_tracking_disabled = 1;
1262 }
1263#endif
1264
1265#if OS_REASON_DEBUG
1266 if (PE_parse_boot_argn("-disable_osreason_debug", namep, sizeof(namep))) {
1267 os_reason_debug_disabled = 1;
1268 }
1269#endif
1270
1271 PE_parse_boot_argn("sigrestrict", &sigrestrict_arg, sizeof(sigrestrict_arg));
1272
1273#if DEVELOPMENT|| DEBUG
1274 if (PE_parse_boot_argn("-no_sigsys", namep, sizeof(namep))) {
1275 send_sigsys = false;
1276 }
1277#endif
1278
1279#if (DEVELOPMENT|| DEBUG)
1280 if (PE_parse_boot_argn("alt-dyld", dyld_alt_path, sizeof(dyld_alt_path))) {
1281 if (strlen(dyld_alt_path) > 0) {
1282 use_alt_dyld = 1;
1283 }
1284 }
1285#endif
1286}
1287
1288void
1289bsd_exec_setup(int scale)
1290{
1291
1292 switch (scale) {
1293 case 0:
1294 case 1:
1295 bsd_simul_execs = BSD_SIMUL_EXECS;
1296 break;
1297 case 2:
1298 case 3:
1299 bsd_simul_execs = 65;
1300 break;
1301 case 4:
1302 case 5:
1303 bsd_simul_execs = 129;
1304 break;
1305 case 6:
1306 case 7:
1307 bsd_simul_execs = 257;
1308 break;
1309 default:
1310 bsd_simul_execs = 513;
1311 break;
1312
1313 }
1314 bsd_pageable_map_size = (bsd_simul_execs * BSD_PAGEABLE_SIZE_PER_EXEC);
1315}
1316
1317#if !NFSCLIENT
1318int
1319netboot_root(void);
1320
1321int
1322netboot_root(void)
1323{
1324 return(0);
1325}
1326#endif
1327