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>
58 #include <sys/filedesc.h>
59 #include <sys/imgact.h>
63 #include <sys/loginclass.h>
64 #include <sys/mount.h>
65 #include <sys/mutex.h>
66 #include <sys/syscallsubr.h>
67 #include <sys/sysctl.h>
69 #include <sys/racct.h>
70 #include <sys/resourcevar.h>
71 #include <sys/systm.h>
72 #include <sys/signalvar.h>
73 #include <sys/vnode.h>
74 #include <sys/sysent.h>
75 #include <sys/reboot.h>
76 #include <sys/sched.h>
78 #include <sys/sysproto.h>
79 #include <sys/vmmeter.h>
80 #include <sys/unistd.h>
81 #include <sys/malloc.h>
83 #include <sys/cpuset.h>
85 #include <machine/cpu.h>
87 #include <security/audit/audit.h>
88 #include <security/mac/mac_framework.h>
91 #include <vm/vm_param.h>
92 #include <vm/vm_extern.h>
94 #include <vm/vm_map.h>
95 #include <sys/copyright.h>
98 #include <ddb/db_sym.h>
100 void mi_startup(void); /* Should be elsewhere */
102 /* Components of the first process -- never freed. */
103 static struct session session0;
104 static struct pgrp pgrp0;
106 struct thread0_storage thread0_st __aligned(32);
107 struct vmspace vmspace0;
108 struct proc *initproc;
111 linux_alloc_current_noop(struct thread *td __unused, int flags __unused)
115 int (*lkpi_alloc_current)(struct thread *, int) = linux_alloc_current_noop;
121 int boothowto = BOOTHOWTO; /* initialized so that it can be patched */
122 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0,
123 "Boot control flags, passed from loader");
126 #define BOOTVERBOSE 0
128 int bootverbose = BOOTVERBOSE;
129 SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0,
130 "Control the output of verbose kernel messages");
132 #ifdef VERBOSE_SYSINIT
134 * We'll use the defined value of VERBOSE_SYSINIT from the kernel config to
135 * dictate the default VERBOSE_SYSINIT behavior. Significant values for this
136 * option and associated tunable are:
137 * - 0, 'compiled in but silent by default'
138 * - 1, 'compiled in but verbose by default' (default)
140 int verbose_sysinit = VERBOSE_SYSINIT;
141 TUNABLE_INT("debug.verbose_sysinit", &verbose_sysinit);
145 FEATURE(invariants, "Kernel compiled with INVARIANTS, may affect performance");
149 * This ensures that there is at least one entry so that the sysinit_set
150 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never
153 SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL);
156 * The sysinit table itself. Items are checked off as the are run.
157 * If we want to register new sysinit types, add them to newsysinit.
159 SET_DECLARE(sysinit_set, struct sysinit);
160 struct sysinit **sysinit, **sysinit_end;
161 struct sysinit **newsysinit, **newsysinit_end;
163 EVENTHANDLER_LIST_DECLARE(process_init);
164 EVENTHANDLER_LIST_DECLARE(thread_init);
165 EVENTHANDLER_LIST_DECLARE(process_ctor);
166 EVENTHANDLER_LIST_DECLARE(thread_ctor);
169 * Merge a new sysinit set into the current set, reallocating it if
170 * necessary. This can only be called after malloc is running.
173 sysinit_add(struct sysinit **set, struct sysinit **set_end)
175 struct sysinit **newset;
176 struct sysinit **sipp;
177 struct sysinit **xipp;
180 count = set_end - set;
182 count += newsysinit_end - newsysinit;
184 count += sysinit_end - sysinit;
185 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT);
187 panic("cannot malloc for sysinit");
190 for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
193 for (sipp = sysinit; sipp < sysinit_end; sipp++)
195 for (sipp = set; sipp < set_end; sipp++)
198 free(newsysinit, M_TEMP);
200 newsysinit_end = newset + count;
203 #if defined (DDB) && defined(VERBOSE_SYSINIT)
205 symbol_name(vm_offset_t va, db_strategy_t strategy)
213 sym = db_search_symbol(va, strategy, &offset);
216 db_symbol_values(sym, &name, NULL);
222 * System startup; initialize the world, create process 0, mount root
223 * filesystem, and fork to create init and pagedaemon. Most of the
224 * hard work is done in the lower-level initialization routines including
225 * startup(), which does memory initialization and autoconfiguration.
227 * This allows simple addition of new kernel subsystems that require
228 * boot time initialization. It also allows substitution of subsystem
229 * (for instance, a scheduler, kernel profiler, or VM system) by object
230 * module. Finally, it allows for optional "kernel threads".
236 struct sysinit **sipp; /* system initialization*/
237 struct sysinit **xipp; /* interior loop of sort*/
238 struct sysinit *save; /* bubble*/
240 #if defined(VERBOSE_SYSINIT)
247 if (boothowto & RB_VERBOSE)
250 if (sysinit == NULL) {
251 sysinit = SET_BEGIN(sysinit_set);
252 sysinit_end = SET_LIMIT(sysinit_set);
257 * Perform a bubble sort of the system initialization objects by
258 * their subsystem (primary key) and order (secondary key).
260 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
261 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
262 if ((*sipp)->subsystem < (*xipp)->subsystem ||
263 ((*sipp)->subsystem == (*xipp)->subsystem &&
264 (*sipp)->order <= (*xipp)->order))
272 #if defined(VERBOSE_SYSINIT)
273 last = SI_SUB_COPYRIGHT;
276 printf("VERBOSE_SYSINIT: DDB not enabled, symbol lookups disabled.\n");
281 * Traverse the (now) ordered list of system initialization tasks.
282 * Perform each task, and continue on to the next task.
284 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
286 if ((*sipp)->subsystem == SI_SUB_DUMMY)
287 continue; /* skip dummy task(s)*/
289 if ((*sipp)->subsystem == SI_SUB_DONE)
292 #if defined(VERBOSE_SYSINIT)
293 if ((*sipp)->subsystem > last && verbose_sysinit != 0) {
295 last = (*sipp)->subsystem;
296 printf("subsystem %x\n", last);
300 const char *func, *data;
302 func = symbol_name((vm_offset_t)(*sipp)->func,
304 data = symbol_name((vm_offset_t)(*sipp)->udata,
306 if (func != NULL && data != NULL)
307 printf(" %s(&%s)... ", func, data);
308 else if (func != NULL)
309 printf(" %s(%p)... ", func, (*sipp)->udata);
312 printf(" %p(%p)... ", (*sipp)->func,
318 (*((*sipp)->func))((*sipp)->udata);
320 #if defined(VERBOSE_SYSINIT)
325 /* Check off the one we're just done */
326 (*sipp)->subsystem = SI_SUB_DONE;
328 /* Check if we've installed more sysinit items via KLD */
329 if (newsysinit != NULL) {
330 if (sysinit != SET_BEGIN(sysinit_set))
331 free(sysinit, M_TEMP);
332 sysinit = newsysinit;
333 sysinit_end = newsysinit_end;
335 newsysinit_end = NULL;
340 TSEXIT(); /* Here so we don't overlap with start_init. */
342 mtx_assert(&Giant, MA_OWNED | MA_NOTRECURSED);
346 * Now hand over this thread to swapper.
353 print_caddr_t(void *data)
355 printf("%s", (char *)data);
359 print_version(void *data __unused)
363 /* Strip a trailing newline from version. */
364 len = strlen(version);
365 while (len > 0 && version[len - 1] == '\n')
367 printf("%.*s %s\n", len, version, machine);
368 printf("%s\n", compiler_version);
371 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,
373 SYSINIT(trademark, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t,
375 SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_THIRD, print_version, NULL);
378 static char wit_warn[] =
379 "WARNING: WITNESS option enabled, expect reduced performance.\n";
380 SYSINIT(witwarn, SI_SUB_COPYRIGHT, SI_ORDER_THIRD + 1,
381 print_caddr_t, wit_warn);
382 SYSINIT(witwarn2, SI_SUB_LAST, SI_ORDER_THIRD + 1,
383 print_caddr_t, wit_warn);
387 static char diag_warn[] =
388 "WARNING: DIAGNOSTIC option enabled, expect reduced performance.\n";
389 SYSINIT(diagwarn, SI_SUB_COPYRIGHT, SI_ORDER_THIRD + 2,
390 print_caddr_t, diag_warn);
391 SYSINIT(diagwarn2, SI_SUB_LAST, SI_ORDER_THIRD + 2,
392 print_caddr_t, diag_warn);
396 null_fetch_syscall_args(struct thread *td __unused)
399 panic("null_fetch_syscall_args");
403 null_set_syscall_retval(struct thread *td __unused, int error __unused)
406 panic("null_set_syscall_retval");
409 struct sysentvec null_sysvec = {
414 .sv_transtrap = NULL,
418 .sv_szsigcode = NULL,
421 .sv_imgact_try = NULL,
423 .sv_pagesize = PAGE_SIZE,
424 .sv_minuser = VM_MIN_ADDRESS,
425 .sv_maxuser = VM_MAXUSER_ADDRESS,
426 .sv_usrstack = USRSTACK,
427 .sv_psstrings = PS_STRINGS,
428 .sv_stackprot = VM_PROT_ALL,
429 .sv_copyout_strings = NULL,
434 .sv_set_syscall_retval = null_set_syscall_retval,
435 .sv_fetch_syscall_args = null_fetch_syscall_args,
436 .sv_syscallnames = NULL,
437 .sv_schedtail = NULL,
438 .sv_thread_detach = NULL,
443 * The two following SYSINIT's are proc0 specific glue code. I am not
444 * convinced that they can not be safely combined, but their order of
445 * operation has been maintained as the same as the original init_main.c
450 proc0_init(void *dummy __unused)
454 struct ucred *newcred;
455 struct uidinfo tmpuinfo;
456 struct loginclass tmplc = {
459 vm_paddr_t pageablemem;
467 * Initialize magic number and osrel.
469 p->p_magic = P_MAGIC;
470 p->p_osrel = osreldate;
473 * Initialize thread and process structures.
475 procinit(); /* set up proc zone */
476 threadinit(); /* set up UMA zones */
479 * Initialise scheduler resources.
480 * Add scheduler specific parts to proc, thread as needed.
482 schedinit(); /* scheduler gets its house in order */
485 * Create process 0 (the swapper).
487 LIST_INSERT_HEAD(&allproc, p, p_list);
488 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
489 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
491 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
492 LIST_INIT(&pgrp0.pg_members);
493 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
495 pgrp0.pg_session = &session0;
496 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
497 refcount_init(&session0.s_count, 1);
498 session0.s_leader = p;
500 p->p_sysent = &null_sysvec;
501 p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
503 p->p_state = PRS_NORMAL;
504 p->p_klist = knlist_alloc(&p->p_mtx);
505 STAILQ_INIT(&p->p_ktr);
507 /* pid_max cannot be greater than PID_MAX */
508 td->td_tid = PID_MAX + 1;
509 LIST_INSERT_HEAD(TIDHASH(td->td_tid), td, td_hash);
510 td->td_state = TDS_RUNNING;
511 td->td_pri_class = PRI_TIMESHARE;
512 td->td_user_pri = PUSER;
513 td->td_base_user_pri = PUSER;
514 td->td_lend_user_pri = PRI_MAX;
515 td->td_priority = PVM;
516 td->td_base_pri = PVM;
517 td->td_oncpu = curcpu;
518 td->td_flags = TDF_INMEM;
519 td->td_pflags = TDP_KTHREAD;
520 td->td_cpuset = cpuset_thread0();
521 td->td_domain.dr_policy = td->td_cpuset->cs_domain;
522 epoch_thread_init(td);
527 p->p_treeflag |= P_TREE_REAPER;
528 LIST_INIT(&p->p_reaplist);
530 strncpy(p->p_comm, "kernel", sizeof (p->p_comm));
531 strncpy(td->td_name, "swapper", sizeof (td->td_name));
533 callout_init_mtx(&p->p_itcallout, &p->p_mtx, 0);
534 callout_init_mtx(&p->p_limco, &p->p_mtx, 0);
535 callout_init(&td->td_slpcallout, 1);
537 /* Create credentials. */
539 newcred->cr_ngroups = 1; /* group 0 */
540 /* A hack to prevent uifind from tripping over NULL pointers. */
541 curthread->td_ucred = newcred;
543 newcred->cr_uidinfo = newcred->cr_ruidinfo = &tmpuinfo;
544 newcred->cr_uidinfo = uifind(0);
545 newcred->cr_ruidinfo = uifind(0);
546 newcred->cr_loginclass = &tmplc;
547 newcred->cr_loginclass = loginclass_find("default");
548 /* End hack. creds get properly set later with thread_cow_get_proc */
549 curthread->td_ucred = NULL;
550 newcred->cr_prison = &prison0;
551 proc_set_cred_init(p, newcred);
553 audit_cred_kproc0(newcred);
556 mac_cred_create_swapper(newcred);
558 /* Create sigacts. */
559 p->p_sigacts = sigacts_alloc();
561 /* Initialize signal state for process 0. */
564 /* Create the file descriptor table. */
565 p->p_fd = fdinit(NULL, false);
568 /* Create the limits structures. */
569 p->p_limit = lim_alloc();
570 for (i = 0; i < RLIM_NLIMITS; i++)
571 p->p_limit->pl_rlimit[i].rlim_cur =
572 p->p_limit->pl_rlimit[i].rlim_max = RLIM_INFINITY;
573 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_cur =
574 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
575 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_cur =
576 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
577 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_cur = dfldsiz;
578 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_max = maxdsiz;
579 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_cur = dflssiz;
580 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_max = maxssiz;
581 /* Cast to avoid overflow on i386/PAE. */
582 pageablemem = ptoa((vm_paddr_t)vm_free_count());
583 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_cur =
584 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_max = pageablemem;
585 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = pageablemem / 3;
586 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_max = pageablemem;
587 p->p_cpulimit = RLIM_INFINITY;
590 thread_cow_get_proc(td, p);
593 /* Initialize resource accounting structures. */
594 racct_create(&p->p_racct);
596 p->p_stats = pstats_alloc();
598 /* Allocate a prototype map so we have something to fork. */
599 p->p_vmspace = &vmspace0;
600 vmspace0.vm_refcnt = 1;
601 pmap_pinit0(vmspace_pmap(&vmspace0));
604 * proc0 is not expected to enter usermode, so there is no special
605 * handling for sv_minuser here, like is done for exec_new_vmspace().
607 vm_map_init(&vmspace0.vm_map, vmspace_pmap(&vmspace0),
608 p->p_sysent->sv_minuser, p->p_sysent->sv_maxuser);
611 * Call the init and ctor for the new thread and proc. We wait
612 * to do this until all other structures are fairly sane.
614 EVENTHANDLER_DIRECT_INVOKE(process_init, p);
615 EVENTHANDLER_DIRECT_INVOKE(thread_init, td);
616 EVENTHANDLER_DIRECT_INVOKE(process_ctor, p);
617 EVENTHANDLER_DIRECT_INVOKE(thread_ctor, td);
620 * Charge root for one process.
622 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
624 racct_add_force(p, RACCT_NPROC, 1);
627 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
631 proc0_post(void *dummy __unused)
639 * Now we can look at the time, having had a chance to verify the
640 * time from the filesystem. Pretend that proc0 started now.
642 sx_slock(&allproc_lock);
643 FOREACH_PROC_IN_SYSTEM(p) {
645 if (p->p_state == PRS_NEW) {
649 microuptime(&p->p_stats->p_start);
651 rufetch(p, &ru); /* Clears thread stats */
652 p->p_rux.rux_runtime = 0;
653 p->p_rux.rux_uticks = 0;
654 p->p_rux.rux_sticks = 0;
655 p->p_rux.rux_iticks = 0;
657 FOREACH_THREAD_IN_PROC(p, td) {
662 sx_sunlock(&allproc_lock);
663 PCPU_SET(switchtime, cpu_ticks());
664 PCPU_SET(switchticks, ticks);
667 * Give the ``random'' number generator a thump.
670 srandom(ts.tv_sec ^ ts.tv_nsec);
672 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL);
675 random_init(void *dummy __unused)
679 * After CPU has been started we have some randomness on most
680 * platforms via get_cyclecount(). For platforms that don't
681 * we will reseed random(9) in proc0_post() as well.
683 srandom(get_cyclecount());
685 SYSINIT(random, SI_SUB_RANDOM, SI_ORDER_FIRST, random_init, NULL);
688 ***************************************************************************
690 **** The following SYSINIT's and glue code should be moved to the
691 **** respective files on a per subsystem basis.
693 ***************************************************************************
697 * List of paths to try when searching for "init".
699 static char init_path[MAXPATHLEN] =
701 __XSTRING(INIT_PATH);
703 "/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init";
705 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0,
706 "Path used to search the init process");
709 * Shutdown timeout of init(8).
710 * Unused within kernel, but used to control init(8), hence do not remove.
712 #ifndef INIT_SHUTDOWN_TIMEOUT
713 #define INIT_SHUTDOWN_TIMEOUT 120
715 static int init_shutdown_timeout = INIT_SHUTDOWN_TIMEOUT;
716 SYSCTL_INT(_kern, OID_AUTO, init_shutdown_timeout,
717 CTLFLAG_RW, &init_shutdown_timeout, 0, "Shutdown timeout of init(8). "
718 "Unused within kernel, but used to control init(8)");
721 * Start the initial user process; try exec'ing each pathname in init_path.
722 * The program is invoked with one argument containing the boot flags.
725 start_init(void *dummy)
727 struct image_args args;
730 char *free_init_path, *tmp_init_path;
733 struct vmspace *oldvmspace;
735 TSENTER(); /* Here so we don't overlap with mi_startup. */
742 /* Wipe GELI passphrase from the environment. */
743 kern_unsetenv("kern.geom.eli.passphrase");
745 if ((var = kern_getenv("init_path")) != NULL) {
746 strlcpy(init_path, var, sizeof(init_path));
749 free_init_path = tmp_init_path = strdup(init_path, M_TEMP);
751 while ((path = strsep(&tmp_init_path, ":")) != NULL) {
753 printf("start_init: trying %s\n", path);
755 memset(&args, 0, sizeof(args));
756 error = exec_alloc_args(&args);
758 panic("%s: Can't allocate space for init arguments %d",
761 error = exec_args_add_fname(&args, path, UIO_SYSSPACE);
763 panic("%s: Can't add fname %d", __func__, error);
764 error = exec_args_add_arg(&args, path, UIO_SYSSPACE);
766 panic("%s: Can't add argv[0] %d", __func__, error);
767 if (boothowto & RB_SINGLE)
768 error = exec_args_add_arg(&args, "-s", UIO_SYSSPACE);
770 panic("%s: Can't add argv[0] %d", __func__, error);
773 * Now try to exec the program. If can't for any reason
774 * other than it doesn't exist, complain.
776 * Otherwise, return via fork_trampoline() all the way
777 * to user mode as init!
779 KASSERT((td->td_pflags & TDP_EXECVMSPC) == 0,
781 oldvmspace = td->td_proc->p_vmspace;
782 error = kern_execve(td, &args, NULL);
784 ("kern_execve returned success, not EJUSTRETURN"));
785 if (error == EJUSTRETURN) {
786 if ((td->td_pflags & TDP_EXECVMSPC) != 0) {
787 KASSERT(p->p_vmspace != oldvmspace,
788 ("oldvmspace still used"));
789 vmspace_free(oldvmspace);
790 td->td_pflags &= ~TDP_EXECVMSPC;
792 free(free_init_path, M_TEMP);
797 printf("exec %s: error %d\n", path, error);
799 free(free_init_path, M_TEMP);
800 printf("init: not found in path %s\n", init_path);
805 * Like kproc_create(), but runs in its own address space.
806 * We do this early to reserve pid 1.
808 * Note special case - do not make it runnable yet. Other work
809 * in progress will change this more.
812 create_init(const void *udata __unused)
815 struct ucred *newcred, *oldcred;
819 bzero(&fr, sizeof(fr));
820 fr.fr_flags = RFFDG | RFPROC | RFSTOPPED;
821 fr.fr_procp = &initproc;
822 error = fork1(&thread0, &fr);
824 panic("cannot fork init: %d\n", error);
825 KASSERT(initproc->p_pid == 1, ("create_init: initproc->p_pid != 1"));
826 /* divorce init's credentials from the kernel's */
828 sx_xlock(&proctree_lock);
830 initproc->p_flag |= P_SYSTEM | P_INMEM;
831 initproc->p_treeflag |= P_TREE_REAPER;
832 oldcred = initproc->p_ucred;
833 crcopy(newcred, oldcred);
835 mac_cred_create_init(newcred);
838 audit_cred_proc1(newcred);
840 proc_set_cred(initproc, newcred);
841 td = FIRST_THREAD_IN_PROC(initproc);
842 crfree(td->td_ucred);
843 td->td_ucred = crhold(initproc->p_ucred);
844 PROC_UNLOCK(initproc);
845 sx_xunlock(&proctree_lock);
847 cpu_fork_kthread_handler(FIRST_THREAD_IN_PROC(initproc),
850 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL);
853 * Make it runnable now.
856 kick_init(const void *udata __unused)
860 td = FIRST_THREAD_IN_PROC(initproc);
863 sched_add(td, SRQ_BORING);
866 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_MIDDLE, kick_init, NULL);