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>
55 #include <sys/epoch.h>
56 #include <sys/eventhandler.h>
59 #include <sys/filedesc.h>
60 #include <sys/imgact.h>
64 #include <sys/loginclass.h>
65 #include <sys/mount.h>
66 #include <sys/mutex.h>
67 #include <sys/syscallsubr.h>
68 #include <sys/sysctl.h>
70 #include <sys/racct.h>
71 #include <sys/resourcevar.h>
72 #include <sys/systm.h>
73 #include <sys/signalvar.h>
74 #include <sys/vnode.h>
75 #include <sys/sysent.h>
76 #include <sys/reboot.h>
77 #include <sys/sched.h>
79 #include <sys/sysproto.h>
80 #include <sys/vmmeter.h>
81 #include <sys/unistd.h>
82 #include <sys/malloc.h>
84 #include <sys/cpuset.h>
86 #include <machine/cpu.h>
88 #include <security/audit/audit.h>
89 #include <security/mac/mac_framework.h>
92 #include <vm/vm_param.h>
93 #include <vm/vm_extern.h>
95 #include <vm/vm_map.h>
96 #include <sys/copyright.h>
99 #include <ddb/db_sym.h>
101 void mi_startup(void); /* Should be elsewhere */
103 /* Components of the first process -- never freed. */
104 static struct session session0;
105 static struct pgrp pgrp0;
107 struct thread0_storage thread0_st __aligned(32);
108 struct vmspace vmspace0;
109 struct proc *initproc;
112 linux_alloc_current_noop(struct thread *td __unused, int flags __unused)
116 int (*lkpi_alloc_current)(struct thread *, int) = linux_alloc_current_noop;
122 int boothowto = BOOTHOWTO; /* initialized so that it can be patched */
123 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0,
124 "Boot control flags, passed from loader");
127 #define BOOTVERBOSE 0
129 int bootverbose = BOOTVERBOSE;
130 SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0,
131 "Control the output of verbose kernel messages");
133 #ifdef VERBOSE_SYSINIT
135 * We'll use the defined value of VERBOSE_SYSINIT from the kernel config to
136 * dictate the default VERBOSE_SYSINIT behavior. Significant values for this
137 * option and associated tunable are:
138 * - 0, 'compiled in but silent by default'
139 * - 1, 'compiled in but verbose by default' (default)
141 int verbose_sysinit = VERBOSE_SYSINIT;
142 TUNABLE_INT("debug.verbose_sysinit", &verbose_sysinit);
146 FEATURE(invariants, "Kernel compiled with INVARIANTS, may affect performance");
150 * This ensures that there is at least one entry so that the sysinit_set
151 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never
154 SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL);
157 * The sysinit table itself. Items are checked off as the are run.
158 * If we want to register new sysinit types, add them to newsysinit.
160 SET_DECLARE(sysinit_set, struct sysinit);
161 struct sysinit **sysinit, **sysinit_end;
162 struct sysinit **newsysinit, **newsysinit_end;
165 * Merge a new sysinit set into the current set, reallocating it if
166 * necessary. This can only be called after malloc is running.
169 sysinit_add(struct sysinit **set, struct sysinit **set_end)
171 struct sysinit **newset;
172 struct sysinit **sipp;
173 struct sysinit **xipp;
176 count = set_end - set;
178 count += newsysinit_end - newsysinit;
180 count += sysinit_end - sysinit;
181 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT);
183 panic("cannot malloc for sysinit");
186 for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
189 for (sipp = sysinit; sipp < sysinit_end; sipp++)
191 for (sipp = set; sipp < set_end; sipp++)
194 free(newsysinit, M_TEMP);
196 newsysinit_end = newset + count;
199 #if defined (DDB) && defined(VERBOSE_SYSINIT)
201 symbol_name(vm_offset_t va, db_strategy_t strategy)
209 sym = db_search_symbol(va, strategy, &offset);
212 db_symbol_values(sym, &name, NULL);
218 * System startup; initialize the world, create process 0, mount root
219 * filesystem, and fork to create init and pagedaemon. Most of the
220 * hard work is done in the lower-level initialization routines including
221 * startup(), which does memory initialization and autoconfiguration.
223 * This allows simple addition of new kernel subsystems that require
224 * boot time initialization. It also allows substitution of subsystem
225 * (for instance, a scheduler, kernel profiler, or VM system) by object
226 * module. Finally, it allows for optional "kernel threads".
232 struct sysinit **sipp; /* system initialization*/
233 struct sysinit **xipp; /* interior loop of sort*/
234 struct sysinit *save; /* bubble*/
236 #if defined(VERBOSE_SYSINIT)
243 if (boothowto & RB_VERBOSE)
246 if (sysinit == NULL) {
247 sysinit = SET_BEGIN(sysinit_set);
248 sysinit_end = SET_LIMIT(sysinit_set);
253 * Perform a bubble sort of the system initialization objects by
254 * their subsystem (primary key) and order (secondary key).
256 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
257 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
258 if ((*sipp)->subsystem < (*xipp)->subsystem ||
259 ((*sipp)->subsystem == (*xipp)->subsystem &&
260 (*sipp)->order <= (*xipp)->order))
268 #if defined(VERBOSE_SYSINIT)
269 last = SI_SUB_COPYRIGHT;
272 printf("VERBOSE_SYSINIT: DDB not enabled, symbol lookups disabled.\n");
277 * Traverse the (now) ordered list of system initialization tasks.
278 * Perform each task, and continue on to the next task.
280 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
282 if ((*sipp)->subsystem == SI_SUB_DUMMY)
283 continue; /* skip dummy task(s)*/
285 if ((*sipp)->subsystem == SI_SUB_DONE)
288 #if defined(VERBOSE_SYSINIT)
289 if ((*sipp)->subsystem > last && verbose_sysinit != 0) {
291 last = (*sipp)->subsystem;
292 printf("subsystem %x\n", last);
296 const char *func, *data;
298 func = symbol_name((vm_offset_t)(*sipp)->func,
300 data = symbol_name((vm_offset_t)(*sipp)->udata,
302 if (func != NULL && data != NULL)
303 printf(" %s(&%s)... ", func, data);
304 else if (func != NULL)
305 printf(" %s(%p)... ", func, (*sipp)->udata);
308 printf(" %p(%p)... ", (*sipp)->func,
314 (*((*sipp)->func))((*sipp)->udata);
316 #if defined(VERBOSE_SYSINIT)
321 /* Check off the one we're just done */
322 (*sipp)->subsystem = SI_SUB_DONE;
324 /* Check if we've installed more sysinit items via KLD */
325 if (newsysinit != NULL) {
326 if (sysinit != SET_BEGIN(sysinit_set))
327 free(sysinit, M_TEMP);
328 sysinit = newsysinit;
329 sysinit_end = newsysinit_end;
331 newsysinit_end = NULL;
336 TSEXIT(); /* Here so we don't overlap with start_init. */
338 mtx_assert(&Giant, MA_OWNED | MA_NOTRECURSED);
342 * Now hand over this thread to swapper.
349 print_caddr_t(void *data)
351 printf("%s", (char *)data);
355 print_version(void *data __unused)
359 /* Strip a trailing newline from version. */
360 len = strlen(version);
361 while (len > 0 && version[len - 1] == '\n')
363 printf("%.*s %s\n", len, version, machine);
364 printf("%s\n", compiler_version);
367 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,
369 SYSINIT(trademark, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t,
371 SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_THIRD, print_version, NULL);
374 static char wit_warn[] =
375 "WARNING: WITNESS option enabled, expect reduced performance.\n";
376 SYSINIT(witwarn, SI_SUB_COPYRIGHT, SI_ORDER_THIRD + 1,
377 print_caddr_t, wit_warn);
378 SYSINIT(witwarn2, SI_SUB_LAST, SI_ORDER_THIRD + 1,
379 print_caddr_t, wit_warn);
383 static char diag_warn[] =
384 "WARNING: DIAGNOSTIC option enabled, expect reduced performance.\n";
385 SYSINIT(diagwarn, SI_SUB_COPYRIGHT, SI_ORDER_THIRD + 2,
386 print_caddr_t, diag_warn);
387 SYSINIT(diagwarn2, SI_SUB_LAST, SI_ORDER_THIRD + 2,
388 print_caddr_t, diag_warn);
392 null_fetch_syscall_args(struct thread *td __unused)
395 panic("null_fetch_syscall_args");
399 null_set_syscall_retval(struct thread *td __unused, int error __unused)
402 panic("null_set_syscall_retval");
405 struct sysentvec null_sysvec = {
410 .sv_transtrap = NULL,
414 .sv_szsigcode = NULL,
417 .sv_imgact_try = NULL,
419 .sv_minuser = VM_MIN_ADDRESS,
420 .sv_maxuser = VM_MAXUSER_ADDRESS,
421 .sv_usrstack = USRSTACK,
422 .sv_psstrings = PS_STRINGS,
423 .sv_stackprot = VM_PROT_ALL,
424 .sv_copyout_strings = NULL,
429 .sv_set_syscall_retval = null_set_syscall_retval,
430 .sv_fetch_syscall_args = null_fetch_syscall_args,
431 .sv_syscallnames = NULL,
432 .sv_schedtail = NULL,
433 .sv_thread_detach = NULL,
438 * The two following SYSINIT's are proc0 specific glue code. I am not
439 * convinced that they can not be safely combined, but their order of
440 * operation has been maintained as the same as the original init_main.c
445 proc0_init(void *dummy __unused)
449 struct ucred *newcred;
450 struct uidinfo tmpuinfo;
451 struct loginclass tmplc = {
454 vm_paddr_t pageablemem;
462 * Initialize magic number and osrel.
464 p->p_magic = P_MAGIC;
465 p->p_osrel = osreldate;
468 * Initialize thread and process structures.
470 procinit(); /* set up proc zone */
471 threadinit(); /* set up UMA zones */
474 * Initialise scheduler resources.
475 * Add scheduler specific parts to proc, thread as needed.
477 schedinit(); /* scheduler gets its house in order */
480 * Create process 0 (the swapper).
482 LIST_INSERT_HEAD(&allproc, p, p_list);
483 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
484 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
486 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
487 LIST_INIT(&pgrp0.pg_members);
488 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
490 pgrp0.pg_session = &session0;
491 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
492 refcount_init(&session0.s_count, 1);
493 session0.s_leader = p;
495 p->p_sysent = &null_sysvec;
496 p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
498 p->p_state = PRS_NORMAL;
499 p->p_klist = knlist_alloc(&p->p_mtx);
500 STAILQ_INIT(&p->p_ktr);
502 /* pid_max cannot be greater than PID_MAX */
503 td->td_tid = PID_MAX + 1;
504 LIST_INSERT_HEAD(TIDHASH(td->td_tid), td, td_hash);
505 td->td_state = TDS_RUNNING;
506 td->td_pri_class = PRI_TIMESHARE;
507 td->td_user_pri = PUSER;
508 td->td_base_user_pri = PUSER;
509 td->td_lend_user_pri = PRI_MAX;
510 td->td_priority = PVM;
511 td->td_base_pri = PVM;
512 td->td_oncpu = curcpu;
513 td->td_flags = TDF_INMEM;
514 td->td_pflags = TDP_KTHREAD;
515 td->td_cpuset = cpuset_thread0();
516 td->td_domain.dr_policy = td->td_cpuset->cs_domain;
517 epoch_thread_init(td);
522 p->p_treeflag |= P_TREE_REAPER;
523 LIST_INIT(&p->p_reaplist);
525 strncpy(p->p_comm, "kernel", sizeof (p->p_comm));
526 strncpy(td->td_name, "swapper", sizeof (td->td_name));
528 callout_init_mtx(&p->p_itcallout, &p->p_mtx, 0);
529 callout_init_mtx(&p->p_limco, &p->p_mtx, 0);
530 callout_init(&td->td_slpcallout, 1);
532 /* Create credentials. */
534 newcred->cr_ngroups = 1; /* group 0 */
535 /* A hack to prevent uifind from tripping over NULL pointers. */
536 curthread->td_ucred = newcred;
538 newcred->cr_uidinfo = newcred->cr_ruidinfo = &tmpuinfo;
539 newcred->cr_uidinfo = uifind(0);
540 newcred->cr_ruidinfo = uifind(0);
541 newcred->cr_loginclass = &tmplc;
542 newcred->cr_loginclass = loginclass_find("default");
543 /* End hack. creds get properly set later with thread_cow_get_proc */
544 curthread->td_ucred = NULL;
545 newcred->cr_prison = &prison0;
546 proc_set_cred_init(p, newcred);
548 audit_cred_kproc0(newcred);
551 mac_cred_create_swapper(newcred);
553 /* Create sigacts. */
554 p->p_sigacts = sigacts_alloc();
556 /* Initialize signal state for process 0. */
559 /* Create the file descriptor table. */
560 p->p_fd = fdinit(NULL, false);
563 /* Create the limits structures. */
564 p->p_limit = lim_alloc();
565 for (i = 0; i < RLIM_NLIMITS; i++)
566 p->p_limit->pl_rlimit[i].rlim_cur =
567 p->p_limit->pl_rlimit[i].rlim_max = RLIM_INFINITY;
568 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_cur =
569 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
570 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_cur =
571 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
572 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_cur = dfldsiz;
573 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_max = maxdsiz;
574 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_cur = dflssiz;
575 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_max = maxssiz;
576 /* Cast to avoid overflow on i386/PAE. */
577 pageablemem = ptoa((vm_paddr_t)vm_free_count());
578 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_cur =
579 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_max = pageablemem;
580 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = pageablemem / 3;
581 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_max = pageablemem;
582 p->p_cpulimit = RLIM_INFINITY;
585 thread_cow_get_proc(td, p);
588 /* Initialize resource accounting structures. */
589 racct_create(&p->p_racct);
591 p->p_stats = pstats_alloc();
593 /* Allocate a prototype map so we have something to fork. */
594 p->p_vmspace = &vmspace0;
595 vmspace0.vm_refcnt = 1;
596 pmap_pinit0(vmspace_pmap(&vmspace0));
599 * proc0 is not expected to enter usermode, so there is no special
600 * handling for sv_minuser here, like is done for exec_new_vmspace().
602 vm_map_init(&vmspace0.vm_map, vmspace_pmap(&vmspace0),
603 p->p_sysent->sv_minuser, p->p_sysent->sv_maxuser);
606 * Call the init and ctor for the new thread and proc. We wait
607 * to do this until all other structures are fairly sane.
609 EVENTHANDLER_DIRECT_INVOKE(process_init, p);
610 EVENTHANDLER_DIRECT_INVOKE(thread_init, td);
611 EVENTHANDLER_DIRECT_INVOKE(process_ctor, p);
612 EVENTHANDLER_DIRECT_INVOKE(thread_ctor, td);
615 * Charge root for one process.
617 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
619 racct_add_force(p, RACCT_NPROC, 1);
622 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
626 proc0_post(void *dummy __unused)
634 * Now we can look at the time, having had a chance to verify the
635 * time from the filesystem. Pretend that proc0 started now.
637 sx_slock(&allproc_lock);
638 FOREACH_PROC_IN_SYSTEM(p) {
640 if (p->p_state == PRS_NEW) {
644 microuptime(&p->p_stats->p_start);
646 rufetch(p, &ru); /* Clears thread stats */
647 p->p_rux.rux_runtime = 0;
648 p->p_rux.rux_uticks = 0;
649 p->p_rux.rux_sticks = 0;
650 p->p_rux.rux_iticks = 0;
652 FOREACH_THREAD_IN_PROC(p, td) {
657 sx_sunlock(&allproc_lock);
658 PCPU_SET(switchtime, cpu_ticks());
659 PCPU_SET(switchticks, ticks);
662 * Give the ``random'' number generator a thump.
665 srandom(ts.tv_sec ^ ts.tv_nsec);
667 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL);
670 random_init(void *dummy __unused)
674 * After CPU has been started we have some randomness on most
675 * platforms via get_cyclecount(). For platforms that don't
676 * we will reseed random(9) in proc0_post() as well.
678 srandom(get_cyclecount());
680 SYSINIT(random, SI_SUB_RANDOM, SI_ORDER_FIRST, random_init, NULL);
683 ***************************************************************************
685 **** The following SYSINIT's and glue code should be moved to the
686 **** respective files on a per subsystem basis.
688 ***************************************************************************
692 * List of paths to try when searching for "init".
694 static char init_path[MAXPATHLEN] =
696 __XSTRING(INIT_PATH);
698 "/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init";
700 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0,
701 "Path used to search the init process");
704 * Shutdown timeout of init(8).
705 * Unused within kernel, but used to control init(8), hence do not remove.
707 #ifndef INIT_SHUTDOWN_TIMEOUT
708 #define INIT_SHUTDOWN_TIMEOUT 120
710 static int init_shutdown_timeout = INIT_SHUTDOWN_TIMEOUT;
711 SYSCTL_INT(_kern, OID_AUTO, init_shutdown_timeout,
712 CTLFLAG_RW, &init_shutdown_timeout, 0, "Shutdown timeout of init(8). "
713 "Unused within kernel, but used to control init(8)");
716 * Start the initial user process; try exec'ing each pathname in init_path.
717 * The program is invoked with one argument containing the boot flags.
720 start_init(void *dummy)
722 struct image_args args;
725 char *free_init_path, *tmp_init_path;
728 struct vmspace *oldvmspace;
730 TSENTER(); /* Here so we don't overlap with mi_startup. */
737 /* Wipe GELI passphrase from the environment. */
738 kern_unsetenv("kern.geom.eli.passphrase");
740 if ((var = kern_getenv("init_path")) != NULL) {
741 strlcpy(init_path, var, sizeof(init_path));
744 free_init_path = tmp_init_path = strdup(init_path, M_TEMP);
746 while ((path = strsep(&tmp_init_path, ":")) != NULL) {
748 printf("start_init: trying %s\n", path);
750 memset(&args, 0, sizeof(args));
751 error = exec_alloc_args(&args);
753 panic("%s: Can't allocate space for init arguments %d",
756 error = exec_args_add_fname(&args, path, UIO_SYSSPACE);
758 panic("%s: Can't add fname %d", __func__, error);
759 error = exec_args_add_arg(&args, path, UIO_SYSSPACE);
761 panic("%s: Can't add argv[0] %d", __func__, error);
762 if (boothowto & RB_SINGLE)
763 error = exec_args_add_arg(&args, "-s", UIO_SYSSPACE);
765 panic("%s: Can't add argv[0] %d", __func__, error);
768 * Now try to exec the program. If can't for any reason
769 * other than it doesn't exist, complain.
771 * Otherwise, return via fork_trampoline() all the way
772 * to user mode as init!
774 KASSERT((td->td_pflags & TDP_EXECVMSPC) == 0,
776 oldvmspace = td->td_proc->p_vmspace;
777 error = kern_execve(td, &args, NULL);
779 ("kern_execve returned success, not EJUSTRETURN"));
780 if (error == EJUSTRETURN) {
781 if ((td->td_pflags & TDP_EXECVMSPC) != 0) {
782 KASSERT(p->p_vmspace != oldvmspace,
783 ("oldvmspace still used"));
784 vmspace_free(oldvmspace);
785 td->td_pflags &= ~TDP_EXECVMSPC;
787 free(free_init_path, M_TEMP);
792 printf("exec %s: error %d\n", path, error);
794 free(free_init_path, M_TEMP);
795 printf("init: not found in path %s\n", init_path);
800 * Like kproc_create(), but runs in its own address space. We do this
801 * early to reserve pid 1. Note special case - do not make it
802 * runnable yet, init execution is started when userspace can be served.
805 create_init(const void *udata __unused)
808 struct ucred *newcred, *oldcred;
812 bzero(&fr, sizeof(fr));
813 fr.fr_flags = RFFDG | RFPROC | RFSTOPPED;
814 fr.fr_procp = &initproc;
815 error = fork1(&thread0, &fr);
817 panic("cannot fork init: %d\n", error);
818 KASSERT(initproc->p_pid == 1, ("create_init: initproc->p_pid != 1"));
819 /* divorce init's credentials from the kernel's */
821 sx_xlock(&proctree_lock);
823 initproc->p_flag |= P_SYSTEM | P_INMEM;
824 initproc->p_treeflag |= P_TREE_REAPER;
825 oldcred = initproc->p_ucred;
826 crcopy(newcred, oldcred);
828 mac_cred_create_init(newcred);
831 audit_cred_proc1(newcred);
833 proc_set_cred(initproc, newcred);
834 td = FIRST_THREAD_IN_PROC(initproc);
835 crfree(td->td_ucred);
836 td->td_ucred = crhold(initproc->p_ucred);
837 PROC_UNLOCK(initproc);
838 sx_xunlock(&proctree_lock);
840 cpu_fork_kthread_handler(FIRST_THREAD_IN_PROC(initproc),
843 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL);
846 * Make it runnable now.
849 kick_init(const void *udata __unused)
853 td = FIRST_THREAD_IN_PROC(initproc);
856 sched_add(td, SRQ_BORING);
859 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_MIDDLE, kick_init, NULL);