1 /* 2 * Copyright (c) 1995 Terrence R. Lambert 3 * All rights reserved. 4 * 5 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)init_main.c 8.9 (Berkeley) 1/21/94 42 * $FreeBSD$ 43 */ 44 45 #include "opt_init_path.h" 46 #include "opt_mac.h" 47 48 #include <sys/param.h> 49 #include <sys/kernel.h> 50 #include <sys/file.h> 51 #include <sys/filedesc.h> 52 #include <sys/ktr.h> 53 #include <sys/lock.h> 54 #include <sys/mac.h> 55 #include <sys/mount.h> 56 #include <sys/mutex.h> 57 #include <sys/sysctl.h> 58 #include <sys/proc.h> 59 #include <sys/resourcevar.h> 60 #include <sys/systm.h> 61 #include <sys/signalvar.h> 62 #include <sys/vnode.h> 63 #include <sys/sysent.h> 64 #include <sys/reboot.h> 65 #include <sys/sx.h> 66 #include <sys/sysproto.h> 67 #include <sys/vmmeter.h> 68 #include <sys/unistd.h> 69 #include <sys/malloc.h> 70 #include <sys/conf.h> 71 72 #include <machine/cpu.h> 73 74 #include <vm/vm.h> 75 #include <vm/vm_param.h> 76 #include <vm/pmap.h> 77 #include <vm/vm_map.h> 78 #include <sys/user.h> 79 #include <sys/copyright.h> 80 81 void mi_startup(void); /* Should be elsewhere */ 82 83 /* Components of the first process -- never freed. */ 84 static struct session session0; 85 static struct pgrp pgrp0; 86 struct proc proc0; 87 struct thread thread0; 88 static struct procsig procsig0; 89 static struct filedesc0 filedesc0; 90 static struct plimit limit0; 91 static struct vmspace vmspace0; 92 struct proc *initproc; 93 94 int cmask = CMASK; 95 extern int fallback_elf_brand; 96 97 struct vnode *rootvp; 98 int boothowto = 0; /* initialized so that it can be patched */ 99 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, ""); 100 int bootverbose; 101 SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0, ""); 102 103 /* 104 * This ensures that there is at least one entry so that the sysinit_set 105 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never 106 * executed. 107 */ 108 SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL) 109 110 /* 111 * The sysinit table itself. Items are checked off as the are run. 112 * If we want to register new sysinit types, add them to newsysinit. 113 */ 114 SET_DECLARE(sysinit_set, struct sysinit); 115 struct sysinit **sysinit, **sysinit_end; 116 struct sysinit **newsysinit, **newsysinit_end; 117 118 /* 119 * Merge a new sysinit set into the current set, reallocating it if 120 * necessary. This can only be called after malloc is running. 121 */ 122 void 123 sysinit_add(struct sysinit **set, struct sysinit **set_end) 124 { 125 struct sysinit **newset; 126 struct sysinit **sipp; 127 struct sysinit **xipp; 128 int count; 129 130 count = set_end - set; 131 if (newsysinit) 132 count += newsysinit_end - newsysinit; 133 else 134 count += sysinit_end - sysinit; 135 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT); 136 if (newset == NULL) 137 panic("cannot malloc for sysinit"); 138 xipp = newset; 139 if (newsysinit) 140 for (sipp = newsysinit; sipp < newsysinit_end; sipp++) 141 *xipp++ = *sipp; 142 else 143 for (sipp = sysinit; sipp < sysinit_end; sipp++) 144 *xipp++ = *sipp; 145 for (sipp = set; sipp < set_end; sipp++) 146 *xipp++ = *sipp; 147 if (newsysinit) 148 free(newsysinit, M_TEMP); 149 newsysinit = newset; 150 newsysinit_end = newset + count; 151 } 152 153 /* 154 * System startup; initialize the world, create process 0, mount root 155 * filesystem, and fork to create init and pagedaemon. Most of the 156 * hard work is done in the lower-level initialization routines including 157 * startup(), which does memory initialization and autoconfiguration. 158 * 159 * This allows simple addition of new kernel subsystems that require 160 * boot time initialization. It also allows substitution of subsystem 161 * (for instance, a scheduler, kernel profiler, or VM system) by object 162 * module. Finally, it allows for optional "kernel threads". 163 */ 164 void 165 mi_startup(void) 166 { 167 168 register struct sysinit **sipp; /* system initialization*/ 169 register struct sysinit **xipp; /* interior loop of sort*/ 170 register struct sysinit *save; /* bubble*/ 171 172 if (sysinit == NULL) { 173 sysinit = SET_BEGIN(sysinit_set); 174 sysinit_end = SET_LIMIT(sysinit_set); 175 } 176 177 restart: 178 /* 179 * Perform a bubble sort of the system initialization objects by 180 * their subsystem (primary key) and order (secondary key). 181 */ 182 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 183 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) { 184 if ((*sipp)->subsystem < (*xipp)->subsystem || 185 ((*sipp)->subsystem == (*xipp)->subsystem && 186 (*sipp)->order <= (*xipp)->order)) 187 continue; /* skip*/ 188 save = *sipp; 189 *sipp = *xipp; 190 *xipp = save; 191 } 192 } 193 194 /* 195 * Traverse the (now) ordered list of system initialization tasks. 196 * Perform each task, and continue on to the next task. 197 * 198 * The last item on the list is expected to be the scheduler, 199 * which will not return. 200 */ 201 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 202 203 if ((*sipp)->subsystem == SI_SUB_DUMMY) 204 continue; /* skip dummy task(s)*/ 205 206 if ((*sipp)->subsystem == SI_SUB_DONE) 207 continue; 208 209 /* Call function */ 210 (*((*sipp)->func))((*sipp)->udata); 211 212 /* Check off the one we're just done */ 213 (*sipp)->subsystem = SI_SUB_DONE; 214 215 /* Check if we've installed more sysinit items via KLD */ 216 if (newsysinit != NULL) { 217 if (sysinit != SET_BEGIN(sysinit_set)) 218 free(sysinit, M_TEMP); 219 sysinit = newsysinit; 220 sysinit_end = newsysinit_end; 221 newsysinit = NULL; 222 newsysinit_end = NULL; 223 goto restart; 224 } 225 } 226 227 panic("Shouldn't get here!"); 228 /* NOTREACHED*/ 229 } 230 231 232 /* 233 *************************************************************************** 234 **** 235 **** The following SYSINIT's belong elsewhere, but have not yet 236 **** been moved. 237 **** 238 *************************************************************************** 239 */ 240 static void 241 print_caddr_t(void *data __unused) 242 { 243 printf("%s", (char *)data); 244 } 245 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright) 246 SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t, version) 247 248 static void 249 set_boot_verbose(void *data __unused) 250 { 251 252 if (boothowto & RB_VERBOSE) 253 bootverbose++; 254 } 255 SYSINIT(boot_verbose, SI_SUB_TUNABLES, SI_ORDER_ANY, set_boot_verbose, NULL) 256 257 static struct sysentvec null_sysvec; 258 259 260 /* 261 *************************************************************************** 262 **** 263 **** The two following SYSINT's are proc0 specific glue code. I am not 264 **** convinced that they can not be safely combined, but their order of 265 **** operation has been maintained as the same as the original init_main.c 266 **** for right now. 267 **** 268 **** These probably belong in init_proc.c or kern_proc.c, since they 269 **** deal with proc0 (the fork template process). 270 **** 271 *************************************************************************** 272 */ 273 /* ARGSUSED*/ 274 static void 275 proc0_init(void *dummy __unused) 276 { 277 register struct proc *p; 278 register struct filedesc0 *fdp; 279 register unsigned i; 280 struct thread *td; 281 struct ksegrp *kg; 282 struct kse *ke; 283 284 GIANT_REQUIRED; 285 p = &proc0; 286 td = &thread0; 287 288 /* 289 * Initialize magic number. 290 */ 291 p->p_magic = P_MAGIC; 292 293 /* 294 * Initialize thread, process and pgrp structures. 295 */ 296 procinit(); 297 threadinit(); 298 299 /* 300 * Initialize sleep queue hash table 301 */ 302 sleepinit(); 303 304 /* 305 * additional VM structures 306 */ 307 vm_init2(); 308 309 /* 310 * Create process 0 (the swapper). 311 */ 312 LIST_INSERT_HEAD(&allproc, p, p_list); 313 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash); 314 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK); 315 p->p_pgrp = &pgrp0; 316 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 317 LIST_INIT(&pgrp0.pg_members); 318 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); 319 320 pgrp0.pg_session = &session0; 321 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF); 322 session0.s_count = 1; 323 session0.s_leader = p; 324 325 p->p_sysent = &null_sysvec; 326 327 /* 328 * proc_linkup was already done in init_i386() or alphainit() etc. 329 * because the earlier code needed to follow td->td_proc. Otherwise 330 * I would have done it here.. maybe this means this should be 331 * done earlier too. 332 */ 333 ke = &proc0.p_kse; /* XXXKSE */ 334 kg = &proc0.p_ksegrp; /* XXXKSE */ 335 p->p_flag = P_SYSTEM; 336 p->p_sflag = PS_INMEM; 337 p->p_state = PRS_NORMAL; 338 td->td_state = TDS_RUNNING; 339 kg->kg_nice = NZERO; 340 kg->kg_pri_class = PRI_TIMESHARE; 341 kg->kg_user_pri = PUSER; 342 td->td_priority = PVM; 343 td->td_base_pri = PUSER; 344 td->td_kse = ke; /* XXXKSE */ 345 ke->ke_oncpu = 0; 346 ke->ke_state = KES_THREAD; 347 ke->ke_thread = td; 348 /* proc_linkup puts it in the idle queue, that's not what we want. */ 349 TAILQ_REMOVE(&kg->kg_iq, ke, ke_kgrlist); 350 kg->kg_idle_kses--; 351 p->p_peers = 0; 352 p->p_leader = p; 353 KASSERT((ke->ke_kgrlist.tqe_next != ke), ("linked to self!")); 354 355 356 bcopy("swapper", p->p_comm, sizeof ("swapper")); 357 358 callout_init(&p->p_itcallout, 0); 359 callout_init(&td->td_slpcallout, 1); 360 361 /* Create credentials. */ 362 p->p_ucred = crget(); 363 p->p_ucred->cr_ngroups = 1; /* group 0 */ 364 p->p_ucred->cr_uidinfo = uifind(0); 365 p->p_ucred->cr_ruidinfo = uifind(0); 366 p->p_ucred->cr_prison = NULL; /* Don't jail it. */ 367 #ifdef MAC 368 mac_create_proc0(p->p_ucred); 369 #endif 370 td->td_ucred = crhold(p->p_ucred); 371 372 /* Create procsig. */ 373 p->p_procsig = &procsig0; 374 p->p_procsig->ps_refcnt = 1; 375 376 /* Initialize signal state for process 0. */ 377 siginit(&proc0); 378 379 /* Create the file descriptor table. */ 380 fdp = &filedesc0; 381 p->p_fd = &fdp->fd_fd; 382 mtx_init(&fdp->fd_fd.fd_mtx, FILEDESC_LOCK_DESC, NULL, MTX_DEF); 383 fdp->fd_fd.fd_refcnt = 1; 384 fdp->fd_fd.fd_cmask = cmask; 385 fdp->fd_fd.fd_ofiles = fdp->fd_dfiles; 386 fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags; 387 fdp->fd_fd.fd_nfiles = NDFILE; 388 389 /* Create the limits structures. */ 390 p->p_limit = &limit0; 391 for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++) 392 limit0.pl_rlimit[i].rlim_cur = 393 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; 394 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = 395 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles; 396 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = 397 limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc; 398 i = ptoa(cnt.v_free_count); 399 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = i; 400 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = i; 401 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = i / 3; 402 limit0.p_cpulimit = RLIM_INFINITY; 403 limit0.p_refcnt = 1; 404 405 /* Allocate a prototype map so we have something to fork. */ 406 pmap_pinit0(vmspace_pmap(&vmspace0)); 407 p->p_vmspace = &vmspace0; 408 vmspace0.vm_refcnt = 1; 409 vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS), 410 trunc_page(VM_MAXUSER_ADDRESS)); 411 vmspace0.vm_map.pmap = vmspace_pmap(&vmspace0); 412 413 /* 414 * We continue to place resource usage info and signal 415 * actions in the user struct so they're pageable. 416 */ 417 p->p_stats = &p->p_uarea->u_stats; 418 p->p_sigacts = &p->p_uarea->u_sigacts; 419 420 /* 421 * Charge root for one process. 422 */ 423 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0); 424 } 425 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL) 426 427 /* ARGSUSED*/ 428 static void 429 proc0_post(void *dummy __unused) 430 { 431 struct timespec ts; 432 struct proc *p; 433 434 /* 435 * Now we can look at the time, having had a chance to verify the 436 * time from the filesystem. Pretend that proc0 started now. 437 */ 438 sx_slock(&allproc_lock); 439 LIST_FOREACH(p, &allproc, p_list) { 440 microtime(&p->p_stats->p_start); 441 p->p_runtime.sec = 0; 442 p->p_runtime.frac = 0; 443 } 444 sx_sunlock(&allproc_lock); 445 binuptime(PCPU_PTR(switchtime)); 446 PCPU_SET(switchticks, ticks); 447 448 /* 449 * Give the ``random'' number generator a thump. 450 */ 451 nanotime(&ts); 452 srandom(ts.tv_sec ^ ts.tv_nsec); 453 } 454 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL) 455 456 /* 457 *************************************************************************** 458 **** 459 **** The following SYSINIT's and glue code should be moved to the 460 **** respective files on a per subsystem basis. 461 **** 462 *************************************************************************** 463 */ 464 465 466 /* 467 *************************************************************************** 468 **** 469 **** The following code probably belongs in another file, like 470 **** kern/init_init.c. 471 **** 472 *************************************************************************** 473 */ 474 475 /* 476 * List of paths to try when searching for "init". 477 */ 478 static char init_path[MAXPATHLEN] = 479 #ifdef INIT_PATH 480 __XSTRING(INIT_PATH); 481 #else 482 "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall"; 483 #endif 484 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, 485 "Path used to search the init process"); 486 487 /* 488 * Start the initial user process; try exec'ing each pathname in init_path. 489 * The program is invoked with one argument containing the boot flags. 490 */ 491 static void 492 start_init(void *dummy) 493 { 494 vm_offset_t addr; 495 struct execve_args args; 496 int options, error; 497 char *var, *path, *next, *s; 498 char *ucp, **uap, *arg0, *arg1; 499 struct thread *td; 500 struct proc *p; 501 int init_does_devfs = 0; 502 503 mtx_lock(&Giant); 504 505 GIANT_REQUIRED; 506 507 td = curthread; 508 p = td->td_proc; 509 510 vfs_mountroot(); 511 512 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 513 if (VFS_ROOT(TAILQ_FIRST(&mountlist), &rootvnode)) 514 panic("cannot find root vnode"); 515 FILEDESC_LOCK(p->p_fd); 516 p->p_fd->fd_cdir = rootvnode; 517 VREF(p->p_fd->fd_cdir); 518 p->p_fd->fd_rdir = rootvnode; 519 VREF(p->p_fd->fd_rdir); 520 FILEDESC_UNLOCK(p->p_fd); 521 VOP_UNLOCK(rootvnode, 0, td); 522 #ifdef MAC 523 mac_create_root_mount(td->td_ucred, TAILQ_FIRST(&mountlist)); 524 #endif 525 526 if (devfs_present) { 527 /* 528 * For disk based systems, we probably cannot do this yet 529 * since the fs will be read-only. But a NFS root 530 * might be ok. It is worth a shot. 531 */ 532 error = vn_mkdir("/dev", 0700, UIO_SYSSPACE, td); 533 if (error == EEXIST) 534 error = 0; 535 if (error == 0) 536 error = kernel_vmount(0, "fstype", "devfs", 537 "fspath", "/dev", NULL); 538 if (error != 0) 539 init_does_devfs = 1; 540 } 541 542 /* 543 * Need just enough stack to hold the faked-up "execve()" arguments. 544 */ 545 addr = trunc_page(USRSTACK - PAGE_SIZE); 546 if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE, 547 FALSE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0) 548 panic("init: couldn't allocate argument space"); 549 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 550 p->p_vmspace->vm_ssize = 1; 551 552 if ((var = getenv("init_path")) != NULL) { 553 strncpy(init_path, var, sizeof init_path); 554 init_path[sizeof init_path - 1] = 0; 555 freeenv(var); 556 } 557 if ((var = getenv("kern.fallback_elf_brand")) != NULL) { 558 fallback_elf_brand = strtol(var, NULL, 0); 559 freeenv(var); 560 } 561 562 for (path = init_path; *path != '\0'; path = next) { 563 while (*path == ':') 564 path++; 565 if (*path == '\0') 566 break; 567 for (next = path; *next != '\0' && *next != ':'; next++) 568 /* nothing */ ; 569 if (bootverbose) 570 printf("start_init: trying %.*s\n", (int)(next - path), 571 path); 572 573 /* 574 * Move out the boot flag argument. 575 */ 576 options = 0; 577 ucp = (char *)USRSTACK; 578 (void)subyte(--ucp, 0); /* trailing zero */ 579 if (boothowto & RB_SINGLE) { 580 (void)subyte(--ucp, 's'); 581 options = 1; 582 } 583 #ifdef notyet 584 if (boothowto & RB_FASTBOOT) { 585 (void)subyte(--ucp, 'f'); 586 options = 1; 587 } 588 #endif 589 590 #ifdef BOOTCDROM 591 (void)subyte(--ucp, 'C'); 592 options = 1; 593 #endif 594 if (init_does_devfs) { 595 (void)subyte(--ucp, 'd'); 596 options = 1; 597 } 598 599 if (options == 0) 600 (void)subyte(--ucp, '-'); 601 (void)subyte(--ucp, '-'); /* leading hyphen */ 602 arg1 = ucp; 603 604 /* 605 * Move out the file name (also arg 0). 606 */ 607 (void)subyte(--ucp, 0); 608 for (s = next - 1; s >= path; s--) 609 (void)subyte(--ucp, *s); 610 arg0 = ucp; 611 612 /* 613 * Move out the arg pointers. 614 */ 615 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1)); 616 (void)suword((caddr_t)--uap, (long)0); /* terminator */ 617 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1); 618 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0); 619 620 /* 621 * Point at the arguments. 622 */ 623 args.fname = arg0; 624 args.argv = uap; 625 args.envv = NULL; 626 627 /* 628 * Now try to exec the program. If can't for any reason 629 * other than it doesn't exist, complain. 630 * 631 * Otherwise, return via fork_trampoline() all the way 632 * to user mode as init! 633 */ 634 if ((error = execve(td, &args)) == 0) { 635 mtx_unlock(&Giant); 636 return; 637 } 638 if (error != ENOENT) 639 printf("exec %.*s: error %d\n", (int)(next - path), 640 path, error); 641 } 642 printf("init: not found in path %s\n", init_path); 643 panic("no init"); 644 } 645 646 /* 647 * Like kthread_create(), but runs in it's own address space. 648 * We do this early to reserve pid 1. 649 * 650 * Note special case - do not make it runnable yet. Other work 651 * in progress will change this more. 652 */ 653 static void 654 create_init(const void *udata __unused) 655 { 656 struct ucred *newcred, *oldcred; 657 int error; 658 659 error = fork1(&thread0, RFFDG | RFPROC | RFSTOPPED, &initproc); 660 if (error) 661 panic("cannot fork init: %d\n", error); 662 /* divorce init's credentials from the kernel's */ 663 newcred = crget(); 664 PROC_LOCK(initproc); 665 initproc->p_flag |= P_SYSTEM; 666 oldcred = initproc->p_ucred; 667 crcopy(newcred, oldcred); 668 #ifdef MAC 669 mac_create_proc1(newcred); 670 #endif 671 initproc->p_ucred = newcred; 672 PROC_UNLOCK(initproc); 673 crfree(oldcred); 674 cred_update_thread(FIRST_THREAD_IN_PROC(initproc)); 675 mtx_lock_spin(&sched_lock); 676 initproc->p_sflag |= PS_INMEM; 677 mtx_unlock_spin(&sched_lock); 678 cpu_set_fork_handler(FIRST_THREAD_IN_PROC(initproc), start_init, NULL); 679 } 680 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL) 681 682 /* 683 * Make it runnable now. 684 */ 685 static void 686 kick_init(const void *udata __unused) 687 { 688 struct thread *td; 689 690 td = FIRST_THREAD_IN_PROC(initproc); 691 mtx_lock_spin(&sched_lock); 692 setrunqueue(td); /* XXXKSE */ 693 mtx_unlock_spin(&sched_lock); 694 } 695 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL) 696