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
46 #include "opt_init_path.h"
47 #include "opt_verbose_sysinit.h"
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/boottrace.h>
53 #include <sys/cpuset.h>
54 #include <sys/dtrace_bsd.h>
55 #include <sys/epoch.h>
56 #include <sys/eventhandler.h>
59 #include <sys/filedesc.h>
60 #include <sys/imgact.h>
62 #include <sys/kernel.h>
65 #include <sys/loginclass.h>
66 #include <sys/malloc.h>
67 #include <sys/mount.h>
68 #include <sys/mutex.h>
70 #include <sys/racct.h>
71 #include <sys/reboot.h>
72 #include <sys/resourcevar.h>
73 #include <sys/queue.h>
74 #include <sys/queue_mergesort.h>
75 #include <sys/sched.h>
76 #include <sys/signalvar.h>
78 #include <sys/syscallsubr.h>
79 #include <sys/sysctl.h>
80 #include <sys/sysent.h>
81 #include <sys/sysproto.h>
82 #include <sys/unistd.h>
83 #include <sys/vmmeter.h>
84 #include <sys/vnode.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;
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 linker set compiled into the kernel. These are placed onto the
157 * sysinit list by mi_startup; sysinit_add can add (e.g., from klds) additional
158 * sysinits to the linked list but the linker set here does not change.
160 SET_DECLARE(sysinit_set, struct sysinit);
163 * The sysinit lists. Items are moved to sysinit_done_list when done.
165 static STAILQ_HEAD(sysinitlist, sysinit) sysinit_list;
166 static struct sysinitlist sysinit_done_list =
167 STAILQ_HEAD_INITIALIZER(sysinit_done_list);
170 * Compare two sysinits; return -1, 0, or 1 if a comes before, at the same time
174 sysinit_compar(struct sysinit *a, struct sysinit *b, void *thunk __unused)
177 if (a->subsystem < b->subsystem)
179 if (a->subsystem > b->subsystem)
181 if (a->order < b->order)
183 if (a->order > b->order)
189 sysinit_mklist(struct sysinitlist *list, struct sysinit **set,
190 struct sysinit **set_end)
192 struct sysinit **sipp;
197 for (sipp = set; sipp < set_end; sipp++)
198 STAILQ_INSERT_TAIL(list, *sipp, next);
200 TSENTER2("mergesort");
201 STAILQ_MERGESORT(list, NULL, sysinit_compar, sysinit, next);
202 TSEXIT2("mergesort");
207 * Merge a new sysinit set into the sysinit list.
210 sysinit_add(struct sysinit **set, struct sysinit **set_end)
212 struct sysinitlist new_list;
216 /* Construct a sorted list from the new sysinits. */
217 sysinit_mklist(&new_list, set, set_end);
219 /* Merge the new list into the existing one. */
220 TSENTER2("STAILQ_MERGE");
221 STAILQ_MERGE(&sysinit_list, &new_list, NULL, sysinit_compar, sysinit, next);
222 TSEXIT2("STAILQ_MERGE");
227 #if defined (DDB) && defined(VERBOSE_SYSINIT)
229 symbol_name(vm_offset_t va, db_strategy_t strategy)
237 sym = db_search_symbol(va, strategy, &offset);
240 db_symbol_values(sym, &name, NULL);
246 * System startup; initialize the world, create process 0, mount root
247 * filesystem, and fork to create init and pagedaemon. Most of the
248 * hard work is done in the lower-level initialization routines including
249 * startup(), which does memory initialization and autoconfiguration.
251 * This allows simple addition of new kernel subsystems that require
252 * boot time initialization. It also allows substitution of subsystem
253 * (for instance, a scheduler, kernel profiler, or VM system) by object
254 * module. Finally, it allows for optional "kernel threads".
262 #if defined(VERBOSE_SYSINIT)
268 if (boothowto & RB_VERBOSE)
271 /* Construct and sort sysinit list. */
272 sysinit_mklist(&sysinit_list, SET_BEGIN(sysinit_set), SET_LIMIT(sysinit_set));
274 last = SI_SUB_COPYRIGHT;
275 #if defined(VERBOSE_SYSINIT)
278 printf("VERBOSE_SYSINIT: DDB not enabled, symbol lookups disabled.\n");
283 * Perform each system initialization task from the ordered list. Note
284 * that if sysinit_list is modified (e.g. by a KLD) we will nonetheless
285 * always perform the earlist-sorted sysinit at each step; using the
286 * STAILQ_FOREACH macro would result in items being skipped if inserted
287 * earlier than the "current item".
289 while ((sip = STAILQ_FIRST(&sysinit_list)) != NULL) {
290 STAILQ_REMOVE_HEAD(&sysinit_list, next);
291 STAILQ_INSERT_TAIL(&sysinit_done_list, sip, next);
293 if (sip->subsystem == SI_SUB_DUMMY)
294 continue; /* skip dummy task(s)*/
296 if (sip->subsystem > last)
297 BOOTTRACE_INIT("sysinit 0x%7x", sip->subsystem);
299 #if defined(VERBOSE_SYSINIT)
300 if (sip->subsystem > last && verbose_sysinit != 0) {
302 printf("subsystem %x\n", last);
306 const char *func, *data;
308 func = symbol_name((vm_offset_t)sip->func,
310 data = symbol_name((vm_offset_t)sip->udata,
312 if (func != NULL && data != NULL)
313 printf(" %s(&%s)... ", func, data);
314 else if (func != NULL)
315 printf(" %s(%p)... ", func, sip->udata);
318 printf(" %p(%p)... ", sip->func,
324 (*(sip->func))(sip->udata);
326 #if defined(VERBOSE_SYSINIT)
331 /* Check off the one we're just done */
332 last = sip->subsystem;
335 TSEXIT(); /* Here so we don't overlap with start_init. */
336 BOOTTRACE("mi_startup done");
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_FOURTH,
377 print_caddr_t, wit_warn);
378 SYSINIT(witwarn2, SI_SUB_LAST, SI_ORDER_FOURTH,
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_FIFTH,
386 print_caddr_t, diag_warn);
387 SYSINIT(diagwarn2, SI_SUB_LAST, SI_ORDER_FIFTH,
388 print_caddr_t, diag_warn);
391 #if __SIZEOF_LONG__ == 4
392 static char ilp32_warn[] =
393 "WARNING: 32-bit kernels are deprecated and may be removed in FreeBSD 15.0.\n";
394 SYSINIT(ilp32warn, SI_SUB_COPYRIGHT, SI_ORDER_FIFTH,
395 print_caddr_t, ilp32_warn);
396 SYSINIT(ilp32warn2, SI_SUB_LAST, SI_ORDER_FIFTH,
397 print_caddr_t, ilp32_warn);
401 null_fetch_syscall_args(struct thread *td __unused)
404 panic("null_fetch_syscall_args");
408 null_set_syscall_retval(struct thread *td __unused, int error __unused)
411 panic("null_set_syscall_retval");
415 null_set_fork_retval(struct thread *td __unused)
420 struct sysentvec null_sysvec = {
426 .sv_szsigcode = NULL,
430 .sv_minuser = VM_MIN_ADDRESS,
431 .sv_maxuser = VM_MAXUSER_ADDRESS,
432 .sv_usrstack = USRSTACK,
433 .sv_psstrings = PS_STRINGS,
434 .sv_psstringssz = sizeof(struct ps_strings),
435 .sv_stackprot = VM_PROT_ALL,
436 .sv_copyout_strings = NULL,
441 .sv_set_syscall_retval = null_set_syscall_retval,
442 .sv_fetch_syscall_args = null_fetch_syscall_args,
443 .sv_syscallnames = NULL,
444 .sv_schedtail = NULL,
445 .sv_thread_detach = NULL,
447 .sv_set_fork_retval = null_set_fork_retval,
448 .sv_regset_begin = NULL,
449 .sv_regset_end = NULL,
453 * The two following SYSINIT's are proc0 specific glue code. I am not
454 * convinced that they can not be safely combined, but their order of
455 * operation has been maintained as the same as the original init_main.c
460 proc0_init(void *dummy __unused)
464 struct ucred *newcred;
465 struct uidinfo tmpuinfo;
466 struct loginclass tmplc = {
469 vm_paddr_t pageablemem;
477 * Initialize magic number and osrel.
479 p->p_magic = P_MAGIC;
480 p->p_osrel = osreldate;
483 * Initialize thread and process structures.
485 procinit(); /* set up proc zone */
486 threadinit(); /* set up UMA zones */
489 * Initialise scheduler resources.
490 * Add scheduler specific parts to proc, thread as needed.
492 schedinit(); /* scheduler gets its house in order */
495 * Create process 0 (the swapper).
497 LIST_INSERT_HEAD(&allproc, p, p_list);
498 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
499 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
500 sx_init(&pgrp0.pg_killsx, "killpg racer");
502 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
503 LIST_INIT(&pgrp0.pg_members);
504 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
506 pgrp0.pg_session = &session0;
507 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
508 refcount_init(&session0.s_count, 1);
509 session0.s_leader = p;
511 p->p_sysent = &null_sysvec;
512 p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
514 p->p_state = PRS_NORMAL;
515 p->p_klist = knlist_alloc(&p->p_mtx);
516 STAILQ_INIT(&p->p_ktr);
518 td->td_tid = THREAD0_TID;
520 TD_SET_STATE(td, TDS_RUNNING);
521 td->td_pri_class = PRI_TIMESHARE;
522 td->td_user_pri = PUSER;
523 td->td_base_user_pri = PUSER;
524 td->td_lend_user_pri = PRI_MAX;
525 td->td_priority = PVM;
526 td->td_base_pri = PVM;
527 td->td_oncpu = curcpu;
528 td->td_flags = TDF_INMEM;
529 td->td_pflags = TDP_KTHREAD;
530 td->td_cpuset = cpuset_thread0();
531 td->td_domain.dr_policy = td->td_cpuset->cs_domain;
536 p->p_treeflag |= P_TREE_REAPER;
537 LIST_INIT(&p->p_reaplist);
539 strncpy(p->p_comm, "kernel", sizeof (p->p_comm));
540 strncpy(td->td_name, "swapper", sizeof (td->td_name));
542 callout_init_mtx(&p->p_itcallout, &p->p_mtx, 0);
543 callout_init_mtx(&p->p_limco, &p->p_mtx, 0);
544 callout_init(&td->td_slpcallout, 1);
545 TAILQ_INIT(&p->p_kqtim_stop);
547 /* Create credentials. */
549 newcred->cr_ngroups = 1; /* group 0 */
550 /* A hack to prevent uifind from tripping over NULL pointers. */
551 curthread->td_ucred = newcred;
553 newcred->cr_uidinfo = newcred->cr_ruidinfo = &tmpuinfo;
554 newcred->cr_uidinfo = uifind(0);
555 newcred->cr_ruidinfo = uifind(0);
556 newcred->cr_loginclass = &tmplc;
557 newcred->cr_loginclass = loginclass_find("default");
558 /* End hack. creds get properly set later with thread_cow_get_proc */
559 curthread->td_ucred = NULL;
560 newcred->cr_prison = &prison0;
561 newcred->cr_users++; /* avoid assertion failure */
562 p->p_ucred = crcowget(newcred);
566 audit_cred_kproc0(newcred);
569 mac_cred_create_swapper(newcred);
571 /* Create sigacts. */
572 p->p_sigacts = sigacts_alloc();
574 /* Initialize signal state for process 0. */
577 /* Create the file descriptor table. */
578 p->p_pd = pdinit(NULL, false);
582 /* Create the limits structures. */
583 p->p_limit = lim_alloc();
584 for (i = 0; i < RLIM_NLIMITS; i++)
585 p->p_limit->pl_rlimit[i].rlim_cur =
586 p->p_limit->pl_rlimit[i].rlim_max = RLIM_INFINITY;
587 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_cur =
588 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
589 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_cur =
590 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
591 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_cur = dfldsiz;
592 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_max = maxdsiz;
593 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_cur = dflssiz;
594 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_max = maxssiz;
595 /* Cast to avoid overflow on i386/PAE. */
596 pageablemem = ptoa((vm_paddr_t)vm_free_count());
597 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_cur =
598 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_max = pageablemem;
599 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = pageablemem / 3;
600 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_max = pageablemem;
601 p->p_cpulimit = RLIM_INFINITY;
604 thread_cow_get_proc(td, p);
607 /* Initialize resource accounting structures. */
608 racct_create(&p->p_racct);
610 p->p_stats = pstats_alloc();
612 /* Allocate a prototype map so we have something to fork. */
613 p->p_vmspace = &vmspace0;
614 refcount_init(&vmspace0.vm_refcnt, 1);
615 pmap_pinit0(vmspace_pmap(&vmspace0));
618 * proc0 is not expected to enter usermode, so there is no special
619 * handling for sv_minuser here, like is done for exec_new_vmspace().
621 vm_map_init(&vmspace0.vm_map, vmspace_pmap(&vmspace0),
622 p->p_sysent->sv_minuser, p->p_sysent->sv_maxuser);
625 * Call the init and ctor for the new thread and proc. We wait
626 * to do this until all other structures are fairly sane.
628 EVENTHANDLER_DIRECT_INVOKE(process_init, p);
629 EVENTHANDLER_DIRECT_INVOKE(thread_init, td);
631 kdtrace_proc_ctor(p);
632 kdtrace_thread_ctor(td);
634 EVENTHANDLER_DIRECT_INVOKE(process_ctor, p);
635 EVENTHANDLER_DIRECT_INVOKE(thread_ctor, td);
638 * Charge root for one process.
640 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
642 racct_add_force(p, RACCT_NPROC, 1);
645 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
649 proc0_post(void *dummy __unused)
656 * Now we can look at the time, having had a chance to verify the
657 * time from the filesystem. Pretend that proc0 started now.
659 sx_slock(&allproc_lock);
660 FOREACH_PROC_IN_SYSTEM(p) {
662 if (p->p_state == PRS_NEW) {
666 microuptime(&p->p_stats->p_start);
668 rufetch(p, &ru); /* Clears thread stats */
669 p->p_rux.rux_runtime = 0;
670 p->p_rux.rux_uticks = 0;
671 p->p_rux.rux_sticks = 0;
672 p->p_rux.rux_iticks = 0;
674 FOREACH_THREAD_IN_PROC(p, td) {
679 sx_sunlock(&allproc_lock);
680 PCPU_SET(switchtime, cpu_ticks());
681 PCPU_SET(switchticks, ticks);
683 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL);
686 ***************************************************************************
688 **** The following SYSINIT's and glue code should be moved to the
689 **** respective files on a per subsystem basis.
691 ***************************************************************************
695 * List of paths to try when searching for "init".
697 static char init_path[MAXPATHLEN] =
699 __XSTRING(INIT_PATH);
701 "/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init";
703 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0,
704 "Path used to search the init process");
707 * Shutdown timeout of init(8).
708 * Unused within kernel, but used to control init(8), hence do not remove.
710 #ifndef INIT_SHUTDOWN_TIMEOUT
711 #define INIT_SHUTDOWN_TIMEOUT 120
713 static int init_shutdown_timeout = INIT_SHUTDOWN_TIMEOUT;
714 SYSCTL_INT(_kern, OID_AUTO, init_shutdown_timeout,
715 CTLFLAG_RW, &init_shutdown_timeout, 0, "Shutdown timeout of init(8). "
716 "Unused within kernel, but used to control init(8)");
719 * Start the initial user process; try exec'ing each pathname in init_path.
720 * The program is invoked with one argument containing the boot flags.
723 start_init(void *dummy)
725 struct image_args args;
728 char *free_init_path, *tmp_init_path;
731 struct vmspace *oldvmspace;
733 TSENTER(); /* Here so we don't overlap with mi_startup. */
740 /* Wipe GELI passphrase from the environment. */
741 kern_unsetenv("kern.geom.eli.passphrase");
743 /* For Multicons, report which console is primary to both */
744 if (boothowto & RB_MULTIPLE) {
745 if (boothowto & RB_SERIAL)
746 printf("Dual Console: Serial Primary, Video Secondary\n");
748 printf("Dual Console: Video Primary, Serial Secondary\n");
751 if ((var = kern_getenv("init_path")) != NULL) {
752 strlcpy(init_path, var, sizeof(init_path));
755 free_init_path = tmp_init_path = strdup(init_path, M_TEMP);
757 while ((path = strsep(&tmp_init_path, ":")) != NULL) {
759 printf("start_init: trying %s\n", path);
761 memset(&args, 0, sizeof(args));
762 error = exec_alloc_args(&args);
764 panic("%s: Can't allocate space for init arguments %d",
767 error = exec_args_add_fname(&args, path, UIO_SYSSPACE);
769 panic("%s: Can't add fname %d", __func__, error);
770 error = exec_args_add_arg(&args, path, UIO_SYSSPACE);
772 panic("%s: Can't add argv[0] %d", __func__, error);
773 if (boothowto & RB_SINGLE)
774 error = exec_args_add_arg(&args, "-s", UIO_SYSSPACE);
776 panic("%s: Can't add argv[0] %d", __func__, error);
779 * Now try to exec the program. If can't for any reason
780 * other than it doesn't exist, complain.
782 * Otherwise, return via fork_trampoline() all the way
783 * to user mode as init!
785 KASSERT((td->td_pflags & TDP_EXECVMSPC) == 0,
787 oldvmspace = p->p_vmspace;
788 error = kern_execve(td, &args, NULL, oldvmspace);
790 ("kern_execve returned success, not EJUSTRETURN"));
791 if (error == EJUSTRETURN) {
792 exec_cleanup(td, oldvmspace);
793 free(free_init_path, M_TEMP);
798 printf("exec %s: error %d\n", path, error);
800 free(free_init_path, M_TEMP);
801 printf("init: not found in path %s\n", init_path);
806 * Like kproc_create(), but runs in its own address space. We do this
807 * early to reserve pid 1. Note special case - do not make it
808 * runnable yet, init execution is started when userspace can be served.
811 create_init(const void *udata __unused)
814 struct ucred *newcred, *oldcred;
818 bzero(&fr, sizeof(fr));
819 fr.fr_flags = RFFDG | RFPROC | RFSTOPPED;
820 fr.fr_procp = &initproc;
821 error = fork1(&thread0, &fr);
823 panic("cannot fork init: %d\n", error);
824 KASSERT(initproc->p_pid == 1, ("create_init: initproc->p_pid != 1"));
825 /* divorce init's credentials from the kernel's */
827 sx_xlock(&proctree_lock);
829 initproc->p_flag |= P_SYSTEM | P_INMEM;
830 initproc->p_treeflag |= P_TREE_REAPER;
831 oldcred = initproc->p_ucred;
832 crcopy(newcred, oldcred);
834 mac_cred_create_init(newcred);
837 audit_cred_proc1(newcred);
839 proc_set_cred(initproc, newcred);
840 td = FIRST_THREAD_IN_PROC(initproc);
842 td->td_realucred = crcowget(initproc->p_ucred);
843 td->td_ucred = td->td_realucred;
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);
865 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_MIDDLE, kick_init, NULL);
872 db_show_print_syinit(struct sysinit *sip, bool ddb)
874 const char *sname, *funcname;
878 #define xprint(...) \
880 db_printf(__VA_ARGS__); \
885 xprint("%s: no sysinit * given\n", __func__);
889 sym = db_search_symbol((vm_offset_t)sip, DB_STGY_ANY, &offset);
890 db_symbol_values(sym, &sname, NULL);
891 sym = db_search_symbol((vm_offset_t)sip->func, DB_STGY_PROC, &offset);
892 db_symbol_values(sym, &funcname, NULL);
893 xprint("%s(%p)\n", (sname != NULL) ? sname : "", sip);
894 xprint(" %#08x %#08x\n", sip->subsystem, sip->order);
895 xprint(" %p(%s)(%p)\n",
896 sip->func, (funcname != NULL) ? funcname : "", sip->udata);
900 DB_SHOW_COMMAND_FLAGS(sysinit, db_show_sysinit, DB_CMD_MEMSAFE)
904 db_printf("SYSINIT vs Name(Ptr)\n");
905 db_printf(" Subsystem Order\n");
906 db_printf(" Function(Name)(Arg)\n");
907 STAILQ_FOREACH(sip, &sysinit_done_list, next) {
908 db_show_print_syinit(sip, true);
912 STAILQ_FOREACH(sip, &sysinit_list, next) {
913 db_show_print_syinit(sip, true);