2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1995 Terrence R. Lambert
7 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
8 * The Regents of the University of California. All rights reserved.
9 * (c) UNIX System Laboratories, Inc.
10 * All or some portions of this file are derived from material licensed
11 * to the University of California by American Telephone and Telegraph
12 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
13 * the permission of UNIX System Laboratories, Inc.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 * 3. All advertising materials mentioning features or use of this software
24 * must display the following acknowledgement:
25 * This product includes software developed by the University of
26 * California, Berkeley and its contributors.
27 * 4. Neither the name of the University nor the names of its contributors
28 * may be used to endorse or promote products derived from this software
29 * without specific prior written permission.
31 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * @(#)init_main.c 8.9 (Berkeley) 1/21/94
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
50 #include "opt_init_path.h"
51 #include "opt_verbose_sysinit.h"
53 #include <sys/param.h>
54 #include <sys/kernel.h>
57 #include <sys/filedesc.h>
61 #include <sys/loginclass.h>
62 #include <sys/mount.h>
63 #include <sys/mutex.h>
64 #include <sys/syscallsubr.h>
65 #include <sys/sysctl.h>
67 #include <sys/racct.h>
68 #include <sys/resourcevar.h>
69 #include <sys/systm.h>
70 #include <sys/signalvar.h>
71 #include <sys/vnode.h>
72 #include <sys/sysent.h>
73 #include <sys/reboot.h>
74 #include <sys/sched.h>
76 #include <sys/sysproto.h>
77 #include <sys/vmmeter.h>
78 #include <sys/unistd.h>
79 #include <sys/malloc.h>
81 #include <sys/cpuset.h>
83 #include <machine/cpu.h>
85 #include <security/audit/audit.h>
86 #include <security/mac/mac_framework.h>
89 #include <vm/vm_param.h>
90 #include <vm/vm_extern.h>
92 #include <vm/vm_map.h>
93 #include <sys/copyright.h>
96 #include <ddb/db_sym.h>
98 void mi_startup(void); /* Should be elsewhere */
100 /* Components of the first process -- never freed. */
101 static struct session session0;
102 static struct pgrp pgrp0;
104 struct thread0_storage thread0_st __aligned(32);
105 struct vmspace vmspace0;
106 struct proc *initproc;
111 int boothowto = BOOTHOWTO; /* initialized so that it can be patched */
112 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0,
113 "Boot control flags, passed from loader");
116 #define BOOTVERBOSE 0
118 int bootverbose = BOOTVERBOSE;
119 SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0,
120 "Control the output of verbose kernel messages");
123 FEATURE(invariants, "Kernel compiled with INVARIANTS, may affect performance");
127 * This ensures that there is at least one entry so that the sysinit_set
128 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never
131 SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL);
134 * The sysinit table itself. Items are checked off as the are run.
135 * If we want to register new sysinit types, add them to newsysinit.
137 SET_DECLARE(sysinit_set, struct sysinit);
138 struct sysinit **sysinit, **sysinit_end;
139 struct sysinit **newsysinit, **newsysinit_end;
141 EVENTHANDLER_LIST_DECLARE(process_init);
142 EVENTHANDLER_LIST_DECLARE(thread_init);
143 EVENTHANDLER_LIST_DECLARE(process_ctor);
144 EVENTHANDLER_LIST_DECLARE(thread_ctor);
147 * Merge a new sysinit set into the current set, reallocating it if
148 * necessary. This can only be called after malloc is running.
151 sysinit_add(struct sysinit **set, struct sysinit **set_end)
153 struct sysinit **newset;
154 struct sysinit **sipp;
155 struct sysinit **xipp;
158 count = set_end - set;
160 count += newsysinit_end - newsysinit;
162 count += sysinit_end - sysinit;
163 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT);
165 panic("cannot malloc for sysinit");
168 for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
171 for (sipp = sysinit; sipp < sysinit_end; sipp++)
173 for (sipp = set; sipp < set_end; sipp++)
176 free(newsysinit, M_TEMP);
178 newsysinit_end = newset + count;
181 #if defined (DDB) && defined(VERBOSE_SYSINIT)
183 symbol_name(vm_offset_t va, db_strategy_t strategy)
191 sym = db_search_symbol(va, strategy, &offset);
194 db_symbol_values(sym, &name, NULL);
200 * System startup; initialize the world, create process 0, mount root
201 * filesystem, and fork to create init and pagedaemon. Most of the
202 * hard work is done in the lower-level initialization routines including
203 * startup(), which does memory initialization and autoconfiguration.
205 * This allows simple addition of new kernel subsystems that require
206 * boot time initialization. It also allows substitution of subsystem
207 * (for instance, a scheduler, kernel profiler, or VM system) by object
208 * module. Finally, it allows for optional "kernel threads".
214 struct sysinit **sipp; /* system initialization*/
215 struct sysinit **xipp; /* interior loop of sort*/
216 struct sysinit *save; /* bubble*/
218 #if defined(VERBOSE_SYSINIT)
225 if (boothowto & RB_VERBOSE)
228 if (sysinit == NULL) {
229 sysinit = SET_BEGIN(sysinit_set);
230 sysinit_end = SET_LIMIT(sysinit_set);
235 * Perform a bubble sort of the system initialization objects by
236 * their subsystem (primary key) and order (secondary key).
238 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
239 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
240 if ((*sipp)->subsystem < (*xipp)->subsystem ||
241 ((*sipp)->subsystem == (*xipp)->subsystem &&
242 (*sipp)->order <= (*xipp)->order))
250 #if defined(VERBOSE_SYSINIT)
251 last = SI_SUB_COPYRIGHT;
254 printf("VERBOSE_SYSINIT: DDB not enabled, symbol lookups disabled.\n");
259 * Traverse the (now) ordered list of system initialization tasks.
260 * Perform each task, and continue on to the next task.
262 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
264 if ((*sipp)->subsystem == SI_SUB_DUMMY)
265 continue; /* skip dummy task(s)*/
267 if ((*sipp)->subsystem == SI_SUB_DONE)
270 #if defined(VERBOSE_SYSINIT)
271 if ((*sipp)->subsystem > last) {
273 last = (*sipp)->subsystem;
274 printf("subsystem %x\n", last);
278 const char *func, *data;
280 func = symbol_name((vm_offset_t)(*sipp)->func,
282 data = symbol_name((vm_offset_t)(*sipp)->udata,
284 if (func != NULL && data != NULL)
285 printf(" %s(&%s)... ", func, data);
286 else if (func != NULL)
287 printf(" %s(%p)... ", func, (*sipp)->udata);
290 printf(" %p(%p)... ", (*sipp)->func,
296 (*((*sipp)->func))((*sipp)->udata);
298 #if defined(VERBOSE_SYSINIT)
303 /* Check off the one we're just done */
304 (*sipp)->subsystem = SI_SUB_DONE;
306 /* Check if we've installed more sysinit items via KLD */
307 if (newsysinit != NULL) {
308 if (sysinit != SET_BEGIN(sysinit_set))
309 free(sysinit, M_TEMP);
310 sysinit = newsysinit;
311 sysinit_end = newsysinit_end;
313 newsysinit_end = NULL;
318 TSEXIT(); /* Here so we don't overlap with start_init. */
320 mtx_assert(&Giant, MA_OWNED | MA_NOTRECURSED);
324 * Now hand over this thread to swapper.
331 print_caddr_t(void *data)
333 printf("%s", (char *)data);
337 print_version(void *data __unused)
341 /* Strip a trailing newline from version. */
342 len = strlen(version);
343 while (len > 0 && version[len - 1] == '\n')
345 printf("%.*s %s\n", len, version, machine);
346 printf("%s\n", compiler_version);
349 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,
351 SYSINIT(trademark, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t,
353 SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_THIRD, print_version, NULL);
356 static char wit_warn[] =
357 "WARNING: WITNESS option enabled, expect reduced performance.\n";
358 SYSINIT(witwarn, SI_SUB_COPYRIGHT, SI_ORDER_THIRD + 1,
359 print_caddr_t, wit_warn);
360 SYSINIT(witwarn2, SI_SUB_LAST, SI_ORDER_THIRD + 1,
361 print_caddr_t, wit_warn);
365 static char diag_warn[] =
366 "WARNING: DIAGNOSTIC option enabled, expect reduced performance.\n";
367 SYSINIT(diagwarn, SI_SUB_COPYRIGHT, SI_ORDER_THIRD + 2,
368 print_caddr_t, diag_warn);
369 SYSINIT(diagwarn2, SI_SUB_LAST, SI_ORDER_THIRD + 2,
370 print_caddr_t, diag_warn);
374 null_fetch_syscall_args(struct thread *td __unused)
377 panic("null_fetch_syscall_args");
381 null_set_syscall_retval(struct thread *td __unused, int error __unused)
384 panic("null_set_syscall_retval");
387 struct sysentvec null_sysvec = {
393 .sv_transtrap = NULL,
397 .sv_szsigcode = NULL,
400 .sv_imgact_try = NULL,
402 .sv_pagesize = PAGE_SIZE,
403 .sv_minuser = VM_MIN_ADDRESS,
404 .sv_maxuser = VM_MAXUSER_ADDRESS,
405 .sv_usrstack = USRSTACK,
406 .sv_psstrings = PS_STRINGS,
407 .sv_stackprot = VM_PROT_ALL,
408 .sv_copyout_strings = NULL,
413 .sv_set_syscall_retval = null_set_syscall_retval,
414 .sv_fetch_syscall_args = null_fetch_syscall_args,
415 .sv_syscallnames = NULL,
416 .sv_schedtail = NULL,
417 .sv_thread_detach = NULL,
422 * The two following SYSINIT's are proc0 specific glue code. I am not
423 * convinced that they can not be safely combined, but their order of
424 * operation has been maintained as the same as the original init_main.c
429 proc0_init(void *dummy __unused)
433 struct ucred *newcred;
434 struct uidinfo tmpuinfo;
435 struct loginclass tmplc = {
438 vm_paddr_t pageablemem;
446 * Initialize magic number and osrel.
448 p->p_magic = P_MAGIC;
449 p->p_osrel = osreldate;
452 * Initialize thread and process structures.
454 procinit(); /* set up proc zone */
455 threadinit(); /* set up UMA zones */
458 * Initialise scheduler resources.
459 * Add scheduler specific parts to proc, thread as needed.
461 schedinit(); /* scheduler gets its house in order */
464 * Create process 0 (the swapper).
466 LIST_INSERT_HEAD(&allproc, p, p_list);
467 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
468 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
470 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
471 LIST_INIT(&pgrp0.pg_members);
472 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
474 pgrp0.pg_session = &session0;
475 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
476 refcount_init(&session0.s_count, 1);
477 session0.s_leader = p;
479 p->p_sysent = &null_sysvec;
480 p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
482 p->p_state = PRS_NORMAL;
483 p->p_klist = knlist_alloc(&p->p_mtx);
484 STAILQ_INIT(&p->p_ktr);
486 /* pid_max cannot be greater than PID_MAX */
487 td->td_tid = PID_MAX + 1;
488 LIST_INSERT_HEAD(TIDHASH(td->td_tid), td, td_hash);
489 td->td_state = TDS_RUNNING;
490 td->td_pri_class = PRI_TIMESHARE;
491 td->td_user_pri = PUSER;
492 td->td_base_user_pri = PUSER;
493 td->td_lend_user_pri = PRI_MAX;
494 td->td_priority = PVM;
495 td->td_base_pri = PVM;
496 td->td_oncpu = curcpu;
497 td->td_flags = TDF_INMEM;
498 td->td_pflags = TDP_KTHREAD;
499 td->td_cpuset = cpuset_thread0();
500 td->td_domain.dr_policy = td->td_cpuset->cs_domain;
505 LIST_INIT(&p->p_reaplist);
507 strncpy(p->p_comm, "kernel", sizeof (p->p_comm));
508 strncpy(td->td_name, "swapper", sizeof (td->td_name));
510 callout_init_mtx(&p->p_itcallout, &p->p_mtx, 0);
511 callout_init_mtx(&p->p_limco, &p->p_mtx, 0);
512 callout_init(&td->td_slpcallout, 1);
514 /* Create credentials. */
516 newcred->cr_ngroups = 1; /* group 0 */
517 /* A hack to prevent uifind from tripping over NULL pointers. */
518 curthread->td_ucred = newcred;
520 newcred->cr_uidinfo = newcred->cr_ruidinfo = &tmpuinfo;
521 newcred->cr_uidinfo = uifind(0);
522 newcred->cr_ruidinfo = uifind(0);
523 newcred->cr_loginclass = &tmplc;
524 newcred->cr_loginclass = loginclass_find("default");
525 /* End hack. creds get properly set later with thread_cow_get_proc */
526 curthread->td_ucred = NULL;
527 newcred->cr_prison = &prison0;
528 proc_set_cred_init(p, newcred);
530 audit_cred_kproc0(newcred);
533 mac_cred_create_swapper(newcred);
535 /* Create sigacts. */
536 p->p_sigacts = sigacts_alloc();
538 /* Initialize signal state for process 0. */
541 /* Create the file descriptor table. */
542 p->p_fd = fdinit(NULL, false);
545 /* Create the limits structures. */
546 p->p_limit = lim_alloc();
547 for (i = 0; i < RLIM_NLIMITS; i++)
548 p->p_limit->pl_rlimit[i].rlim_cur =
549 p->p_limit->pl_rlimit[i].rlim_max = RLIM_INFINITY;
550 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_cur =
551 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
552 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_cur =
553 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
554 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_cur = dfldsiz;
555 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_max = maxdsiz;
556 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_cur = dflssiz;
557 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_max = maxssiz;
558 /* Cast to avoid overflow on i386/PAE. */
559 pageablemem = ptoa((vm_paddr_t)vm_free_count());
560 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_cur =
561 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_max = pageablemem;
562 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = pageablemem / 3;
563 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_max = pageablemem;
564 p->p_cpulimit = RLIM_INFINITY;
567 thread_cow_get_proc(td, p);
570 /* Initialize resource accounting structures. */
571 racct_create(&p->p_racct);
573 p->p_stats = pstats_alloc();
575 /* Allocate a prototype map so we have something to fork. */
576 p->p_vmspace = &vmspace0;
577 vmspace0.vm_refcnt = 1;
578 pmap_pinit0(vmspace_pmap(&vmspace0));
581 * proc0 is not expected to enter usermode, so there is no special
582 * handling for sv_minuser here, like is done for exec_new_vmspace().
584 vm_map_init(&vmspace0.vm_map, vmspace_pmap(&vmspace0),
585 p->p_sysent->sv_minuser, p->p_sysent->sv_maxuser);
588 * Call the init and ctor for the new thread and proc. We wait
589 * to do this until all other structures are fairly sane.
591 EVENTHANDLER_DIRECT_INVOKE(process_init, p);
592 EVENTHANDLER_DIRECT_INVOKE(thread_init, td);
593 EVENTHANDLER_DIRECT_INVOKE(process_ctor, p);
594 EVENTHANDLER_DIRECT_INVOKE(thread_ctor, td);
597 * Charge root for one process.
599 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
601 racct_add_force(p, RACCT_NPROC, 1);
604 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
608 proc0_post(void *dummy __unused)
616 * Now we can look at the time, having had a chance to verify the
617 * time from the filesystem. Pretend that proc0 started now.
619 sx_slock(&allproc_lock);
620 FOREACH_PROC_IN_SYSTEM(p) {
621 microuptime(&p->p_stats->p_start);
623 rufetch(p, &ru); /* Clears thread stats */
625 p->p_rux.rux_runtime = 0;
626 p->p_rux.rux_uticks = 0;
627 p->p_rux.rux_sticks = 0;
628 p->p_rux.rux_iticks = 0;
629 FOREACH_THREAD_IN_PROC(p, td) {
633 sx_sunlock(&allproc_lock);
634 PCPU_SET(switchtime, cpu_ticks());
635 PCPU_SET(switchticks, ticks);
638 * Give the ``random'' number generator a thump.
641 srandom(ts.tv_sec ^ ts.tv_nsec);
643 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL);
646 random_init(void *dummy __unused)
650 * After CPU has been started we have some randomness on most
651 * platforms via get_cyclecount(). For platforms that don't
652 * we will reseed random(9) in proc0_post() as well.
654 srandom(get_cyclecount());
656 SYSINIT(random, SI_SUB_RANDOM, SI_ORDER_FIRST, random_init, NULL);
659 ***************************************************************************
661 **** The following SYSINIT's and glue code should be moved to the
662 **** respective files on a per subsystem basis.
664 ***************************************************************************
668 * List of paths to try when searching for "init".
670 static char init_path[MAXPATHLEN] =
672 __XSTRING(INIT_PATH);
674 "/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init";
676 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0,
677 "Path used to search the init process");
680 * Shutdown timeout of init(8).
681 * Unused within kernel, but used to control init(8), hence do not remove.
683 #ifndef INIT_SHUTDOWN_TIMEOUT
684 #define INIT_SHUTDOWN_TIMEOUT 120
686 static int init_shutdown_timeout = INIT_SHUTDOWN_TIMEOUT;
687 SYSCTL_INT(_kern, OID_AUTO, init_shutdown_timeout,
688 CTLFLAG_RW, &init_shutdown_timeout, 0, "Shutdown timeout of init(8). "
689 "Unused within kernel, but used to control init(8)");
692 * Start the initial user process; try exec'ing each pathname in init_path.
693 * The program is invoked with one argument containing the boot flags.
696 start_init(void *dummy)
699 struct execve_args args;
701 char *var, *path, *next, *s;
702 char *ucp, **uap, *arg0, *arg1;
706 TSENTER(); /* Here so we don't overlap with mi_startup. */
713 /* Wipe GELI passphrase from the environment. */
714 kern_unsetenv("kern.geom.eli.passphrase");
717 * Need just enough stack to hold the faked-up "execve()" arguments.
719 addr = p->p_sysent->sv_usrstack - PAGE_SIZE;
720 if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE, 0,
721 VMFS_NO_SPACE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0)
722 panic("init: couldn't allocate argument space");
723 p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
724 p->p_vmspace->vm_ssize = 1;
726 if ((var = kern_getenv("init_path")) != NULL) {
727 strlcpy(init_path, var, sizeof(init_path));
731 for (path = init_path; *path != '\0'; path = next) {
736 for (next = path; *next != '\0' && *next != ':'; next++)
739 printf("start_init: trying %.*s\n", (int)(next - path),
743 * Move out the boot flag argument.
746 ucp = (char *)p->p_sysent->sv_usrstack;
747 (void)subyte(--ucp, 0); /* trailing zero */
748 if (boothowto & RB_SINGLE) {
749 (void)subyte(--ucp, 's');
753 if (boothowto & RB_FASTBOOT) {
754 (void)subyte(--ucp, 'f');
760 (void)subyte(--ucp, 'C');
765 (void)subyte(--ucp, '-');
766 (void)subyte(--ucp, '-'); /* leading hyphen */
770 * Move out the file name (also arg 0).
772 (void)subyte(--ucp, 0);
773 for (s = next - 1; s >= path; s--)
774 (void)subyte(--ucp, *s);
778 * Move out the arg pointers.
780 uap = (char **)rounddown2((intptr_t)ucp, sizeof(intptr_t));
781 (void)suword((caddr_t)--uap, (long)0); /* terminator */
782 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1);
783 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0);
786 * Point at the arguments.
793 * Now try to exec the program. If can't for any reason
794 * other than it doesn't exist, complain.
796 * Otherwise, return via fork_trampoline() all the way
797 * to user mode as init!
799 if ((error = sys_execve(td, &args)) == EJUSTRETURN) {
804 printf("exec %.*s: error %d\n", (int)(next - path),
807 printf("init: not found in path %s\n", init_path);
812 * Like kproc_create(), but runs in its own address space.
813 * We do this early to reserve pid 1.
815 * Note special case - do not make it runnable yet. Other work
816 * in progress will change this more.
819 create_init(const void *udata __unused)
822 struct ucred *newcred, *oldcred;
826 bzero(&fr, sizeof(fr));
827 fr.fr_flags = RFFDG | RFPROC | RFSTOPPED;
828 fr.fr_procp = &initproc;
829 error = fork1(&thread0, &fr);
831 panic("cannot fork init: %d\n", error);
832 KASSERT(initproc->p_pid == 1, ("create_init: initproc->p_pid != 1"));
833 /* divorce init's credentials from the kernel's */
835 sx_xlock(&proctree_lock);
837 initproc->p_flag |= P_SYSTEM | P_INMEM;
838 initproc->p_treeflag |= P_TREE_REAPER;
839 LIST_INSERT_HEAD(&initproc->p_reaplist, &proc0, p_reapsibling);
840 oldcred = initproc->p_ucred;
841 crcopy(newcred, oldcred);
843 mac_cred_create_init(newcred);
846 audit_cred_proc1(newcred);
848 proc_set_cred(initproc, newcred);
849 td = FIRST_THREAD_IN_PROC(initproc);
850 crfree(td->td_ucred);
851 td->td_ucred = crhold(initproc->p_ucred);
852 PROC_UNLOCK(initproc);
853 sx_xunlock(&proctree_lock);
855 cpu_fork_kthread_handler(FIRST_THREAD_IN_PROC(initproc),
858 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL);
861 * Make it runnable now.
864 kick_init(const void *udata __unused)
868 td = FIRST_THREAD_IN_PROC(initproc);
871 sched_add(td, SRQ_BORING);
874 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_MIDDLE, kick_init, NULL);