bsd/kern/bsd_init.c

   1 /*
   2  * Copyright (c) 2000-2007 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 <bsm/audit_kernel.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
 109 #include <mach/vm_param.h>
 110
 111 #include <vm/vm_map.h>
 112 #include <vm/vm_kern.h>
 113
 114 #include <sys/ux_exception.h>   /* for ux_exception_port */
 115
 116 #include <sys/reboot.h>
 117 #include <mach/exception_types.h>
 118 #include <dev/busvar.h>                 /* for pseudo_inits */
 119 #include <sys/kdebug.h>
 120
 121 #include <mach/mach_types.h>
 122 #include <mach/vm_prot.h>
 123 #include <mach/semaphore.h>
 124 #include <mach/sync_policy.h>
 125 #include <kern/clock.h>
 126 #include <mach/kern_return.h>
 127 #include <mach/thread_act.h>            /* for thread_resume() */
 128 #include <mach/task.h>                  /* for task_set_exception_ports() */
 129 #include <sys/ux_exception.h>           /* for ux_handler() */
 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/aio_kern.h>               /* for aio_init() */
 135 #include <sys/semaphore.h>              /* for psem_cache_init() */
 136 #include <net/dlil.h>                   /* for dlil_init() */
 137 #include <net/kpi_protocol.h>           /* for proto_kpi_init() */
 138 #include <sys/pipe.h>                   /* for pipeinit() */
 139 #include <sys/socketvar.h>              /* for socketinit() */
 140 #include <sys/protosw.h>                /* for domaininit() */
 141 #include <kern/sched_prim.h>            /* for thread_wakeup() */
 142 #include <net/if_ether.h>               /* for ether_family_init() */
 143 #include <vm/vm_protos.h>               /* for vnode_pager_bootstrap() */
 144 #include <miscfs/devfs/devfsdefs.h>     /* for devfs_kernel_mount() */
 145 #include <mach/host_priv.h>             /* for host_set_exception_ports() */
 146 #include <kern/host.h>                  /* for host_priv_self() */
 147 #include <vm/vm_kern.h>                 /* for kmem_suballoc() */
 148 #include <sys/semaphore.h>              /* for psem_lock_init() */
 149 #include <sys/msgbuf.h>                 /* for log_setsize() */
 150
 151 #include <net/init.h>
 152
 153 #if CONFIG_MACF
 154 #include <security/mac_framework.h>
 155 #include <security/mac_internal.h>      /* mac_init_bsd() */
 156 #include <security/mac_mach_internal.h> /* mac_update_task_label() */
 157 #endif
 158
 159 #include <machine/exec.h>
 160
 161 #if CONFIG_IMAGEBOOT
 162 #include <sys/imageboot.h>
 163 #endif
 164
 165 #include <pexpert/pexpert.h>
 166
 167 void * get_user_regs(thread_t);         /* XXX kludge for <machine/thread.h> */
 168 void IOKitInitializeTime(void);         /* XXX */
 169 void loopattach(void);                  /* XXX */
 170
 171 char    copyright[] =
 172 "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
 173 "The Regents of the University of California. "
 174 "All rights reserved.\n\n";
 175
 176 /* Components of the first process -- never freed. */
 177 struct  proc proc0;
 178 struct  session session0;
 179 struct  pgrp pgrp0;
 180 struct  filedesc filedesc0;
 181 struct  plimit limit0;
 182 struct  pstats pstats0;
 183 struct  sigacts sigacts0;
 184 proc_t kernproc;
 185 proc_t initproc;
 186
 187 long tk_cancc;
 188 long tk_nin;
 189 long tk_nout;
 190 long tk_rawcc;
 191
 192 int lock_trace = 0;
 193 /* Global variables to make pstat happy. We do swapping differently */
 194 int nswdev, nswap;
 195 int nswapmap;
 196 void *swapmap;
 197 struct swdevt swdevt[1];
 198
 199 dev_t   rootdev;                /* device of the root */
 200 dev_t   dumpdev;                /* device to take dumps on */
 201 long    dumplo;                 /* offset into dumpdev */
 202 long    hostid;
 203 char    hostname[MAXHOSTNAMELEN];
 204 int             hostnamelen;
 205 char    domainname[MAXDOMNAMELEN];
 206 int             domainnamelen;
 207 #if __i386__
 208 struct exec_archhandler exec_archhandler_ppc = {
 209         .path = "/usr/libexec/oah/translate",
 210 };
 211 #else /* __i386__ */
 212 struct exec_archhandler exec_archhandler_ppc;
 213 #endif /* __i386__ */
 214
 215 char rootdevice[16];    /* hfs device names have at least 9 chars */
 216
 217 #if  KMEMSTATS
 218 struct  kmemstats kmemstats[M_LAST];
 219 #endif
 220
 221 int     lbolt;                          /* awoken once a second */
 222 struct  vnode *rootvp;
 223 int boothowto = RB_DEBUG;
 224
 225 void lightning_bolt(void *);
 226 extern kern_return_t IOFindBSDRoot(char *, dev_t *, u_int32_t *);
 227 extern void IOSecureBSDRoot(const char * rootName);
 228 extern kern_return_t IOKitBSDInit(void );
 229 extern void kminit(void);
 230 extern void klogwakeup(void);
 231 extern void file_lock_init(void);
 232 extern void kmeminit(void);
 233 extern void bsd_bufferinit(void);
 234
 235 extern int srv;
 236 extern int ncl;
 237
 238 #define BSD_SIMUL_EXECS       33 /* 32 , allow for rounding */
 239 #define BSD_PAGABLE_MAP_SIZE    (BSD_SIMUL_EXECS * (NCARGS + PAGE_SIZE))
 240 vm_map_t        bsd_pageable_map;
 241 vm_map_t        mb_map;
 242 semaphore_t execve_semaphore;
 243
 244 int     cmask = CMASK;
 245 extern int customnbuf;
 246
 247 void bsd_init(void) __attribute__((section("__TEXT, initcode")));
 248 __private_extern__ void ubc_init(void )  __attribute__((section("__TEXT, initcode")));
 249 void vfsinit(void) __attribute__((section("__TEXT, initcode")));
 250 kern_return_t bsd_autoconf(void) __attribute__((section("__TEXT, initcode")));
 251 void bsd_utaskbootstrap(void) __attribute__((section("__TEXT, initcode")));
 252
 253 static void parse_bsd_args(void);
 254 extern task_t bsd_init_task;
 255 extern char    init_task_failure_data[];
 256 extern void time_zone_slock_init(void);
 257 static void process_name(const char *, proc_t);
 258
 259 static void setconf(void);
 260
 261 funnel_t *kernel_flock;
 262
 263 #if SYSV_SHM
 264 extern void sysv_shm_lock_init(void);
 265 #endif
 266 #if SYSV_SEM
 267 extern void sysv_sem_lock_init(void);
 268 #endif
 269 #if SYSV_MSG
 270 extern void sysv_msg_lock_init(void);
 271 #endif
 272 extern void pthread_init(void);
 273
 274 /* kmem access not enabled by default; can be changed with boot-args */
 275 int setup_kmem = 0;
 276
 277 /* size of kernel trace buffer, disabled by default */
 278 unsigned int new_nkdbufs = 0;
 279
 280 /* mach leak logging */
 281 int log_leaks = 0;
 282 int turn_on_log_leaks = 0;
 283
 284 extern void stackshot_lock_init(void);
 285
 286 /*
 287  * Initialization code.
 288  * Called from cold start routine as
 289  * soon as a stack and segmentation
 290  * have been established.
 291  * Functions:
 292  *      turn on clock
 293  *      hand craft 0th process
 294  *      call all initialization routines
 295  *  hand craft 1st user process
 296  */
 297
 298 /*
 299  *      Sets the name for the given task.
 300  */
 301 static void
 302 process_name(const char *s, proc_t p)
 303 {
 304         size_t length = strlen(s);
 305
 306         bcopy(s, p->p_comm,
 307                 length >= sizeof(p->p_comm) ? sizeof(p->p_comm) :
 308                         length + 1);
 309 }
 310
 311 /* To allow these values to be patched, they're globals here */
 312 #include <machine/vmparam.h>
 313 struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ - PAGE_SIZE };
 314 struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
 315 struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
 316
 317 extern thread_t cloneproc(proc_t, int);
 318 extern int      (*mountroot)(void);
 319 extern int      netboot_mountroot(void);        /* netboot.c */
 320 extern int      netboot_setup(void);
 321
 322 lck_grp_t * proc_lck_grp;
 323 lck_grp_attr_t * proc_lck_grp_attr;
 324 lck_attr_t * proc_lck_attr;
 325 lck_mtx_t * proc_list_mlock;
 326 lck_mtx_t * proc_klist_mlock;
 327
 328 /* hook called after root is mounted XXX temporary hack */
 329 void (*mountroot_post_hook)(void);
 330
 331 /*
 332  * This function is called very early on in the Mach startup, from the
 333  * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 334  * in the context of the current (startup) task using a call to the
 335  * function kernel_thread_create() to jump into start_kernel_threads().
 336  * Internally, kernel_thread_create() calls thread_create_internal(),
 337  * which calls uthread_alloc().  The function of uthread_alloc() is
 338  * normally to allocate a uthread structure, and fill out the uu_sigmask,
 339  * uu_context fields.  It skips filling these out in the case of the "task"
 340  * being "kernel_task", because the order of operation is inverted.  To
 341  * account for that, we need to manually fill in at least the contents
 342  * of the uu_context.vc_ucred field so that the uthread structure can be
 343  * used like any other.
 344  */
 345 void
 346 bsd_init(void)
 347 {
 348         proc_t p;
 349         struct uthread *ut;
 350         unsigned int i;
 351 #if __i386__
 352         int error;
 353 #endif
 354         struct vfs_context context;
 355         kern_return_t   ret;
 356         struct ucred temp_cred;
 357
 358 #define bsd_init_kprintf(x...) /* kprintf("bsd_init: " x) */
 359
 360         kernel_flock = funnel_alloc(KERNEL_FUNNEL);
 361         if (kernel_flock == (funnel_t *)0 ) {
 362                 panic("bsd_init: Failed to allocate kernel funnel");
 363         }
 364
 365         printf(copyright);
 366
 367         bsd_init_kprintf("calling kmeminit\n");
 368         kmeminit();
 369
 370         bsd_init_kprintf("calling parse_bsd_args\n");
 371         parse_bsd_args();
 372
 373         /* Initialize kauth subsystem before instancing the first credential */
 374         bsd_init_kprintf("calling kauth_init\n");
 375         kauth_init();
 376
 377         /* Initialize process and pgrp structures. */
 378         bsd_init_kprintf("calling procinit\n");
 379         procinit();
 380
 381         kernproc = &proc0;
 382
 383         p = kernproc;
 384
 385         /* kernel_task->proc = kernproc; */
 386         set_bsdtask_info(kernel_task,(void *)p);
 387         p->p_pid = 0;
 388         p->p_ppid = 0;
 389
 390         /* give kernproc a name */
 391         bsd_init_kprintf("calling process_name\n");
 392         process_name("kernel_task", p);
 393
 394         /* allocate proc lock group attribute and group */
 395         bsd_init_kprintf("calling lck_grp_attr_alloc_init\n");
 396         proc_lck_grp_attr= lck_grp_attr_alloc_init();
 397
 398         proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
 399
 400         /* Allocate proc lock attribute */
 401         proc_lck_attr = lck_attr_alloc_init();
 402 #if 0
 403 #if __PROC_INTERNAL_DEBUG
 404         lck_attr_setdebug(proc_lck_attr);
 405 #endif
 406 #endif
 407
 408         proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 409         proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
 410         lck_mtx_init(&p->p_mlock, proc_lck_grp, proc_lck_attr);
 411         lck_mtx_init(&p->p_fdmlock, proc_lck_grp, proc_lck_attr);
 412         lck_spin_init(&p->p_slock, proc_lck_grp, proc_lck_attr);
 413
 414         if (current_task() != kernel_task)
 415                 printf("bsd_init: We have a problem, "
 416                                 "current task is not kernel task\n");
 417
 418         bsd_init_kprintf("calling get_bsdthread_info\n");
 419         ut = (uthread_t)get_bsdthread_info(current_thread());
 420
 421 #if CONFIG_MACF
 422         /*
 423          * Initialize the MAC Framework
 424          */
 425         mac_policy_initbsd();
 426         p->p_mac_enforce = 0;
 427 #endif /* MAC */
 428
 429         /*
 430          * Create process 0.
 431          */
 432         proc_list_lock();
 433         LIST_INSERT_HEAD(&allproc, p, p_list);
 434         p->p_pgrp = &pgrp0;
 435         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 436         LIST_INIT(&pgrp0.pg_members);
 437         lck_mtx_init(&pgrp0.pg_mlock, proc_lck_grp, proc_lck_attr);
 438         /* There is no other bsd thread this point and is safe without pgrp lock */
 439         LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
 440         p->p_listflag |= P_LIST_INPGRP;
 441         p->p_pgrpid = 0;
 442
 443         pgrp0.pg_session = &session0;
 444         pgrp0.pg_membercnt = 1;
 445
 446         session0.s_count = 1;
 447         session0.s_leader = p;
 448         session0.s_listflags = 0;
 449         lck_mtx_init(&session0.s_mlock, proc_lck_grp, proc_lck_attr);
 450         LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
 451         proc_list_unlock();
 452
 453 #if CONFIG_LCTX
 454         p->p_lctx = NULL;
 455 #endif
 456
 457         p->task = kernel_task;
 458
 459         p->p_stat = SRUN;
 460         p->p_flag = P_SYSTEM;
 461         p->p_nice = NZERO;
 462         p->p_pptr = p;
 463
 464         TAILQ_INIT(&p->p_uthlist);
 465         TAILQ_INSERT_TAIL(&p->p_uthlist, ut, uu_list);
 466
 467         p->sigwait = FALSE;
 468         p->sigwait_thread = THREAD_NULL;
 469         p->exit_thread = THREAD_NULL;
 470         p->p_csflags = CS_VALID;
 471
 472         /*
 473          * Create credential.  This also Initializes the audit information.
 474          * XXX It is not clear what the initial values should be for audit ID,
 475          * XXX session ID, etc..
 476          */
 477         bsd_init_kprintf("calling bzero\n");
 478         bzero(&temp_cred, sizeof(temp_cred));
 479         temp_cred.cr_ngroups = 1;
 480
 481         bsd_init_kprintf("calling kauth_cred_create\n");
 482         p->p_ucred = kauth_cred_create(&temp_cred);
 483
 484         /* give the (already exisiting) initial thread a reference on it */
 485         bsd_init_kprintf("calling kauth_cred_ref\n");
 486         kauth_cred_ref(p->p_ucred);
 487         ut->uu_context.vc_ucred = p->p_ucred;
 488         ut->uu_context.vc_thread = current_thread();
 489
 490         TAILQ_INIT(&p->aio_activeq);
 491         TAILQ_INIT(&p->aio_doneq);
 492         p->aio_active_count = 0;
 493         p->aio_done_count = 0;
 494
 495         bsd_init_kprintf("calling file_lock_init\n");
 496         file_lock_init();
 497
 498 #if CONFIG_MACF
 499         mac_cred_label_associate_kernel(p->p_ucred);
 500         mac_task_label_update_cred (p->p_ucred, (struct task *) p->task);
 501 #endif
 502
 503         /* Create the file descriptor table. */
 504         filedesc0.fd_refcnt = 1+1;      /* +1 so shutdown will not _FREE_ZONE */
 505         p->p_fd = &filedesc0;
 506         filedesc0.fd_cmask = cmask;
 507         filedesc0.fd_knlistsize = -1;
 508         filedesc0.fd_knlist = NULL;
 509         filedesc0.fd_knhash = NULL;
 510         filedesc0.fd_knhashmask = 0;
 511
 512         /* Create the limits structures. */
 513         p->p_limit = &limit0;
 514         for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
 515                 limit0.pl_rlimit[i].rlim_cur =
 516                         limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 517         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
 518         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = maxprocperuid;
 519         limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 520         limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
 521         limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
 522         limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
 523         limit0.pl_refcnt = 1;
 524
 525         p->p_stats = &pstats0;
 526         p->p_sigacts = &sigacts0;
 527
 528         /*
 529          * Charge root for two  processes: init and mach_init.
 530          */
 531         bsd_init_kprintf("calling chgproccnt\n");
 532         (void)chgproccnt(0, 1);
 533
 534         /*
 535          *      Allocate a kernel submap for pageable memory
 536          *      for temporary copying (execve()).
 537          */
 538         {
 539                 vm_offset_t     minimum;
 540
 541                 bsd_init_kprintf("calling kmem_suballoc\n");
 542                 ret = kmem_suballoc(kernel_map,
 543                                 &minimum,
 544                                 (vm_size_t)BSD_PAGABLE_MAP_SIZE,
 545                                 TRUE,
 546                                 VM_FLAGS_ANYWHERE,
 547                                 &bsd_pageable_map);
 548                 if (ret != KERN_SUCCESS)
 549                         panic("bsd_init: Failed to allocate bsd pageable map");
 550         }
 551
 552         /*
 553          * Initialize buffers and hash links for buffers
 554          *
 555          * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
 556          *              happen after a credential has been associated with
 557          *              the kernel task.
 558          */
 559         bsd_init_kprintf("calling bsd_bufferinit\n");
 560         bsd_bufferinit();
 561
 562         /* Initialize the execve() semaphore */
 563         bsd_init_kprintf("calling semaphore_create\n");
 564         ret = semaphore_create(kernel_task, &execve_semaphore,
 565                                SYNC_POLICY_FIFO, BSD_SIMUL_EXECS -1);
 566         if (ret != KERN_SUCCESS)
 567                 panic("bsd_init: Failed to create execve semaphore");
 568
 569         /*
 570          * Initialize the calendar.
 571          */
 572         bsd_init_kprintf("calling IOKitInitializeTime\n");
 573         IOKitInitializeTime();
 574
 575         if (turn_on_log_leaks && !new_nkdbufs)
 576                 new_nkdbufs = 200000;
 577         start_kern_tracing(new_nkdbufs);
 578         if (turn_on_log_leaks)
 579                 log_leaks = 1;
 580
 581         bsd_init_kprintf("calling ubc_init\n");
 582         ubc_init();
 583
 584         /* Initialize the file systems. */
 585         bsd_init_kprintf("calling vfsinit\n");
 586         vfsinit();
 587
 588 #if SOCKETS
 589         /* Initialize per-CPU cache allocator */
 590         mcache_init();
 591
 592         /* Initialize mbuf's. */
 593         bsd_init_kprintf("calling mbinit\n");
 594         mbinit();
 595 #endif /* SOCKETS */
 596
 597         /*
 598          * Initializes security event auditing.
 599          * XXX: Should/could this occur later?
 600          */
 601 #if AUDIT
 602         bsd_init_kprintf("calling audit_init\n");
 603         audit_init();
 604 #endif
 605
 606         /* Initialize kqueues */
 607         bsd_init_kprintf("calling knote_init\n");
 608         knote_init();
 609
 610 #if CONFIG_EMBEDDED
 611         /* Initialize kernel memory status notifications */
 612         bsd_init_kprintf("calling kern_memorystatus_init\n");
 613         kern_memorystatus_init();
 614 #endif
 615
 616         /* Initialize for async IO */
 617         bsd_init_kprintf("calling aio_init\n");
 618         aio_init();
 619
 620         /* Initialize pipes */
 621         bsd_init_kprintf("calling pipeinit\n");
 622         pipeinit();
 623
 624         /* Initialize SysV shm subsystem locks; the subsystem proper is
 625          * initialized through a sysctl.
 626          */
 627 #if SYSV_SHM
 628         bsd_init_kprintf("calling sysv_shm_lock_init\n");
 629         sysv_shm_lock_init();
 630 #endif
 631 #if SYSV_SEM
 632         bsd_init_kprintf("calling sysv_sem_lock_init\n");
 633         sysv_sem_lock_init();
 634 #endif
 635 #if SYSV_MSG
 636         bsd_init_kprintf("sysv_msg_lock_init\n");
 637         sysv_msg_lock_init();
 638 #endif
 639         bsd_init_kprintf("calling pshm_lock_init\n");
 640         pshm_lock_init();
 641         bsd_init_kprintf("calling psem_lock_init\n");
 642         psem_lock_init();
 643
 644         pthread_init();
 645         /* POSIX Shm and Sem */
 646         bsd_init_kprintf("calling pshm_cache_init\n");
 647         pshm_cache_init();
 648         bsd_init_kprintf("calling psem_cache_init\n");
 649         psem_cache_init();
 650         bsd_init_kprintf("calling time_zone_slock_init\n");
 651         time_zone_slock_init();
 652
 653         /* Stack snapshot facility lock */
 654         stackshot_lock_init();
 655         /*
 656          * Initialize protocols.  Block reception of incoming packets
 657          * until everything is ready.
 658          */
 659         bsd_init_kprintf("calling sysctl_register_fixed\n");
 660         sysctl_register_fixed();
 661         bsd_init_kprintf("calling sysctl_mib_init\n");
 662         sysctl_mib_init();
 663 #if NETWORKING
 664         bsd_init_kprintf("calling dlil_init\n");
 665         dlil_init();
 666         bsd_init_kprintf("calling proto_kpi_init\n");
 667         proto_kpi_init();
 668 #endif /* NETWORKING */
 669 #if SOCKETS
 670         bsd_init_kprintf("calling socketinit\n");
 671         socketinit();
 672         bsd_init_kprintf("calling domaininit\n");
 673         domaininit();
 674 #endif /* SOCKETS */
 675
 676         p->p_fd->fd_cdir = NULL;
 677         p->p_fd->fd_rdir = NULL;
 678
 679 #ifdef GPROF
 680         /* Initialize kernel profiling. */
 681         kmstartup();
 682 #endif
 683
 684         /* kick off timeout driven events by calling first time */
 685         thread_wakeup(&lbolt);
 686         timeout(lightning_bolt, 0, hz);
 687
 688         bsd_init_kprintf("calling bsd_autoconf\n");
 689         bsd_autoconf();
 690
 691 #if CONFIG_DTRACE
 692         extern void dtrace_postinit(void);
 693         dtrace_postinit();
 694 #endif
 695
 696         /*
 697          * We attach the loopback interface *way* down here to ensure
 698          * it happens after autoconf(), otherwise it becomes the
 699          * "primary" interface.
 700          */
 701 #include <loop.h>
 702 #if NLOOP > 0
 703         bsd_init_kprintf("calling loopattach\n");
 704         loopattach();                   /* XXX */
 705 #endif
 706
 707 #if NETHER > 0
 708         /* Register the built-in dlil ethernet interface family */
 709         bsd_init_kprintf("calling ether_family_init\n");
 710         ether_family_init();
 711 #endif /* ETHER */
 712
 713 #if NETWORKING
 714         /* Call any kext code that wants to run just after network init */
 715         bsd_init_kprintf("calling net_init_run\n");
 716         net_init_run();
 717 #endif /* NETWORKING */
 718
 719         bsd_init_kprintf("calling vnode_pager_bootstrap\n");
 720         vnode_pager_bootstrap();
 721 #if 0
 722         /* XXX Hack for early debug stop */
 723         printf("\nabout to sleep for 10 seconds\n");
 724         IOSleep( 10 * 1000 );
 725         /* Debugger("hello"); */
 726 #endif
 727
 728         bsd_init_kprintf("calling inittodr\n");
 729         inittodr(0);
 730
 731 #if CONFIG_EMBEDDED
 732         {
 733                 /* print out early VM statistics */
 734                 kern_return_t kr1;
 735                 vm_statistics_data_t stat;
 736                 mach_msg_type_number_t count;
 737
 738                 count = HOST_VM_INFO_COUNT;
 739                 kr1 = host_statistics(host_self(),
 740                                       HOST_VM_INFO,
 741                                       (host_info_t)&stat,
 742                                       &count);
 743                 kprintf("Mach Virtual Memory Statistics (page size of 4096) bytes\n"
 744                         "Pages free:\t\t\t%u.\n"
 745                         "Pages active:\t\t\t%u.\n"
 746                         "Pages inactive:\t\t\t%u.\n"
 747                         "Pages wired down:\t\t%u.\n"
 748                         "\"Translation faults\":\t\t%u.\n"
 749                         "Pages copy-on-write:\t\t%u.\n"
 750                         "Pages zero filled:\t\t%u.\n"
 751                         "Pages reactivated:\t\t%u.\n"
 752                         "Pageins:\t\t\t%u.\n"
 753                         "Pageouts:\t\t\t\%u.\n"
 754                         "Object cache: %u hits of %u lookups (%d%% hit rate)\n",
 755
 756                         stat.free_count,
 757                         stat.active_count,
 758                         stat.inactive_count,
 759                         stat.wire_count,
 760                         stat.faults,
 761                         stat.cow_faults,
 762                         stat.zero_fill_count,
 763                         stat.reactivations,
 764                         stat.pageins,
 765                         stat.pageouts,
 766                         stat.hits,
 767                         stat.lookups,
 768                         (stat.hits == 0) ? 100 :
 769                                            ((stat.lookups * 100) / stat.hits));
 770         }
 771 #endif /* CONFIG_EMBEDDED */
 772
 773         /* Mount the root file system. */
 774         while( TRUE) {
 775                 int err;
 776
 777                 bsd_init_kprintf("calling setconf\n");
 778                 setconf();
 779
 780                 bsd_init_kprintf("vfs_mountroot\n");
 781                 if (0 == (err = vfs_mountroot()))
 782                         break;
 783                 rootdevice[0] = '\0';
 784 #if NFSCLIENT
 785                 if (mountroot == netboot_mountroot) {
 786                         printf("bsd_init: netboot_mountroot failed,"
 787                                " errno = %d\n", err);
 788                         panic("bsd_init: failed to mount network root: %s", PE_boot_args());
 789                 }
 790 #endif
 791                 printf("cannot mount root, errno = %d\n", err);
 792                 boothowto |= RB_ASKNAME;
 793         }
 794
 795         IOSecureBSDRoot(rootdevice);
 796
 797         context.vc_thread = current_thread();
 798         context.vc_ucred = p->p_ucred;
 799         mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
 800
 801         bsd_init_kprintf("calling VFS_ROOT\n");
 802         /* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
 803         if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
 804                 panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
 805         rootvnode->v_flag |= VROOT;
 806         (void)vnode_ref(rootvnode);
 807         (void)vnode_put(rootvnode);
 808         filedesc0.fd_cdir = rootvnode;
 809
 810 #if NFSCLIENT
 811         if (mountroot == netboot_mountroot) {
 812                 int err;
 813                 /* post mount setup */
 814                 if ((err = netboot_setup()) != 0) {
 815                         panic("bsd_init: NetBoot could not find root, %d: %s", err, PE_boot_args());
 816                 }
 817         }
 818 #endif
 819
 820
 821 #if CONFIG_IMAGEBOOT
 822         /*
 823          * See if a system disk image is present. If so, mount it and
 824          * switch the root vnode to point to it
 825          */
 826
 827         if(imageboot_needed()) {
 828                 int err;
 829
 830                 /* An image was found */
 831                 if((err = imageboot_setup())) {
 832                         /*
 833                          * this is not fatal. Keep trying to root
 834                          * off the original media
 835                          */
 836                         printf("%s: imageboot could not find root, %d\n",
 837                                 __FUNCTION__, err);
 838                 }
 839         }
 840 #endif /* CONFIG_IMAGEBOOT */
 841
 842         microtime(&p->p_stats->p_start);        /* for compat sake */
 843         microtime(&p->p_start);
 844         p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0;
 845
 846 #if DEVFS
 847         {
 848             char mounthere[] = "/dev";  /* !const because of internal casting */
 849
 850             bsd_init_kprintf("calling devfs_kernel_mount\n");
 851             devfs_kernel_mount(mounthere);
 852         }
 853 #endif /* DEVFS */
 854
 855         /* Initialize signal state for process 0. */
 856         bsd_init_kprintf("calling siginit\n");
 857         siginit(p);
 858
 859         bsd_init_kprintf("calling bsd_utaskbootstrap\n");
 860         bsd_utaskbootstrap();
 861
 862 #if __i386__
 863         /* this should be done after the root filesystem is mounted */
 864         error = set_archhandler(p, CPU_TYPE_POWERPC);
 865         if (error) /* XXX make more generic */
 866                 exec_archhandler_ppc.path[0] = 0;
 867 #endif
 868
 869         bsd_init_kprintf("calling mountroot_post_hook\n");
 870
 871         /* invoke post-root-mount hook */
 872         if (mountroot_post_hook != NULL)
 873                 mountroot_post_hook();
 874
 875 #if 0 /* not yet */
 876         IOKitJettisonKLD();
 877         consider_zone_gc();
 878 #endif
 879
 880         bsd_init_kprintf("done\n");
 881 }
 882
 883 /* Called with kernel funnel held */
 884 void
 885 bsdinit_task(void)
 886 {
 887         proc_t p = current_proc();
 888         struct uthread *ut;
 889         thread_t thread;
 890
 891         process_name("init", p);
 892
 893         ux_handler_init();
 894
 895         thread = current_thread();
 896         (void) host_set_exception_ports(host_priv_self(),
 897                                         EXC_MASK_ALL & ~(EXC_MASK_SYSCALL |
 898                                                          EXC_MASK_MACH_SYSCALL |
 899                                                          EXC_MASK_RPC_ALERT |
 900                                                          EXC_MASK_CRASH),
 901                                         (mach_port_t)ux_exception_port,
 902                                         EXCEPTION_DEFAULT| MACH_EXCEPTION_CODES,
 903                                         0);
 904
 905         ut = (uthread_t)get_bsdthread_info(thread);
 906
 907         bsd_init_task = get_threadtask(thread);
 908         init_task_failure_data[0] = 0;
 909
 910 #if CONFIG_MACF
 911         mac_cred_label_associate_user(p->p_ucred);
 912         mac_task_label_update_cred (p->p_ucred, (struct task *) p->task);
 913 #endif
 914         load_init_program(p);
 915         lock_trace = 1;
 916 }
 917
 918 void
 919 lightning_bolt(__unused void *dummy)
 920 {
 921         boolean_t       funnel_state;
 922
 923         funnel_state = thread_funnel_set(kernel_flock, TRUE);
 924
 925         thread_wakeup(&lbolt);
 926         timeout(lightning_bolt,0,hz);
 927         klogwakeup();
 928
 929         (void) thread_funnel_set(kernel_flock, FALSE);
 930 }
 931
 932 kern_return_t
 933 bsd_autoconf(void)
 934 {
 935         kprintf("bsd_autoconf: calling kminit\n");
 936         kminit();
 937
 938         /*
 939          * Early startup for bsd pseudodevices.
 940          */
 941         {
 942             struct pseudo_init *pi;
 943
 944             for (pi = pseudo_inits; pi->ps_func; pi++)
 945                 (*pi->ps_func) (pi->ps_count);
 946         }
 947
 948         return( IOKitBSDInit());
 949 }
 950
 951
 952 #include <sys/disklabel.h>  /* for MAXPARTITIONS */
 953
 954 static void
 955 setconf(void)
 956 {
 957         u_int32_t       flags;
 958         kern_return_t   err;
 959
 960         /*
 961          * calls into IOKit can generate networking registrations
 962          * which needs to be under network funnel. Right thing to do
 963          * here is to drop the funnel alltogether and regrab it afterwards
 964          */
 965         err = IOFindBSDRoot( rootdevice, &rootdev, &flags );
 966         if( err) {
 967                 printf("setconf: IOFindBSDRoot returned an error (%d);"
 968                         "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */
 969                 rootdev = makedev( 6, 0 );
 970                 strlcpy(rootdevice, "sd0a", sizeof(rootdevice));
 971                 flags = 0;
 972         }
 973
 974 #if NFSCLIENT
 975         if( flags & 1 ) {
 976                 /* network device */
 977                 mountroot = netboot_mountroot;
 978         } else {
 979 #endif
 980                 /* otherwise have vfs determine root filesystem */
 981                 mountroot = NULL;
 982 #if NFSCLIENT
 983         }
 984 #endif
 985
 986 }
 987
 988 void
 989 bsd_utaskbootstrap(void)
 990 {
 991         thread_t thread;
 992         struct uthread *ut;
 993
 994         thread = cloneproc(kernproc, 0);
 995         /* Hold the reference as it will be dropped during shutdown */
 996         initproc = proc_find(1);
 997 #if __PROC_INTERNAL_DEBUG
 998         if (initproc == PROC_NULL)
 999                 panic("bsd_utaskbootstrap: initproc not set\n");
1000 #endif
1001         /* Set the launch time for init */
1002         microtime(&initproc->p_start);
1003         microtime(&initproc->p_stats->p_start); /* for compat sake */
1004
1005
1006         ut = (struct uthread *)get_bsdthread_info(thread);
1007         ut->uu_sigmask = 0;
1008         act_set_astbsd(thread);
1009         (void) thread_resume(thread);
1010 }
1011
1012 static void
1013 parse_bsd_args(void)
1014 {
1015         char namep[16];
1016         int msgbuf;
1017
1018         if (PE_parse_boot_arg("-s", namep))
1019                 boothowto |= RB_SINGLE;
1020
1021         if (PE_parse_boot_arg("-b", namep))
1022                 boothowto |= RB_NOBOOTRC;
1023
1024         if (PE_parse_boot_arg("-x", namep)) /* safe boot */
1025                 boothowto |= RB_SAFEBOOT;
1026
1027         if (PE_parse_boot_arg("-l", namep)) /* leaks logging */
1028                 turn_on_log_leaks = 1;
1029
1030         PE_parse_boot_arg("srv", &srv);
1031         PE_parse_boot_arg("ncl", &ncl);
1032         if (PE_parse_boot_arg("nbuf", &max_nbuf_headers)) {
1033                 customnbuf = 1;
1034         }
1035 #if !defined(SECURE_KERNEL)
1036         PE_parse_boot_arg("kmem", &setup_kmem);
1037 #endif
1038         PE_parse_boot_arg("trace", &new_nkdbufs);
1039
1040         if (PE_parse_boot_arg("msgbuf", &msgbuf)) {
1041                 log_setsize(msgbuf);
1042         }
1043 }
1044
1045 #if !NFSCLIENT
1046 int
1047 netboot_root(void)
1048 {
1049         return(0);
1050 }
1051 #endif