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("$FreeBSD$");
51 #include "opt_init_path.h"
52 #include "opt_verbose_sysinit.h"
54 #include <sys/param.h>
55 #include <sys/systm.h>
56 #include <sys/boottrace.h>
58 #include <sys/cpuset.h>
59 #include <sys/dtrace_bsd.h>
60 #include <sys/epoch.h>
61 #include <sys/eventhandler.h>
64 #include <sys/filedesc.h>
65 #include <sys/imgact.h>
67 #include <sys/kernel.h>
70 #include <sys/loginclass.h>
71 #include <sys/malloc.h>
72 #include <sys/mount.h>
73 #include <sys/mutex.h>
75 #include <sys/racct.h>
76 #include <sys/reboot.h>
77 #include <sys/resourcevar.h>
78 #include <sys/sched.h>
79 #include <sys/signalvar.h>
81 #include <sys/syscallsubr.h>
82 #include <sys/sysctl.h>
83 #include <sys/sysent.h>
84 #include <sys/sysproto.h>
85 #include <sys/unistd.h>
86 #include <sys/vmmeter.h>
87 #include <sys/vnode.h>
89 #include <machine/cpu.h>
91 #include <security/audit/audit.h>
92 #include <security/mac/mac_framework.h>
95 #include <vm/vm_param.h>
96 #include <vm/vm_extern.h>
98 #include <vm/vm_map.h>
99 #include <sys/copyright.h>
102 #include <ddb/db_sym.h>
104 void mi_startup(void); /* Should be elsewhere */
106 /* Components of the first process -- never freed. */
107 static struct session session0;
108 static struct pgrp pgrp0;
110 struct thread0_storage thread0_st __aligned(32);
111 struct vmspace vmspace0;
112 struct proc *initproc;
115 linux_alloc_current_noop(struct thread *td __unused, int flags __unused)
119 int (*lkpi_alloc_current)(struct thread *, int) = linux_alloc_current_noop;
124 int boothowto = BOOTHOWTO; /* initialized so that it can be patched */
125 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0,
126 "Boot control flags, passed from loader");
129 #define BOOTVERBOSE 0
131 int bootverbose = BOOTVERBOSE;
132 SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0,
133 "Control the output of verbose kernel messages");
135 #ifdef VERBOSE_SYSINIT
137 * We'll use the defined value of VERBOSE_SYSINIT from the kernel config to
138 * dictate the default VERBOSE_SYSINIT behavior. Significant values for this
139 * option and associated tunable are:
140 * - 0, 'compiled in but silent by default'
141 * - 1, 'compiled in but verbose by default' (default)
143 int verbose_sysinit = VERBOSE_SYSINIT;
144 TUNABLE_INT("debug.verbose_sysinit", &verbose_sysinit);
148 FEATURE(invariants, "Kernel compiled with INVARIANTS, may affect performance");
152 * This ensures that there is at least one entry so that the sysinit_set
153 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never
156 SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL);
159 * The sysinit table itself. Items are checked off as the are run.
160 * If we want to register new sysinit types, add them to newsysinit.
162 SET_DECLARE(sysinit_set, struct sysinit);
163 struct sysinit **sysinit, **sysinit_end;
164 struct sysinit **newsysinit, **newsysinit_end;
167 * Merge a new sysinit set into the current set, reallocating it if
168 * necessary. This can only be called after malloc is running.
171 sysinit_add(struct sysinit **set, struct sysinit **set_end)
173 struct sysinit **newset;
174 struct sysinit **sipp;
175 struct sysinit **xipp;
178 count = set_end - set;
180 count += newsysinit_end - newsysinit;
182 count += sysinit_end - sysinit;
183 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT);
185 panic("cannot malloc for sysinit");
188 for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
191 for (sipp = sysinit; sipp < sysinit_end; sipp++)
193 for (sipp = set; sipp < set_end; sipp++)
196 free(newsysinit, M_TEMP);
198 newsysinit_end = newset + count;
201 #if defined (DDB) && defined(VERBOSE_SYSINIT)
203 symbol_name(vm_offset_t va, db_strategy_t strategy)
211 sym = db_search_symbol(va, strategy, &offset);
214 db_symbol_values(sym, &name, NULL);
220 * System startup; initialize the world, create process 0, mount root
221 * filesystem, and fork to create init and pagedaemon. Most of the
222 * hard work is done in the lower-level initialization routines including
223 * startup(), which does memory initialization and autoconfiguration.
225 * This allows simple addition of new kernel subsystems that require
226 * boot time initialization. It also allows substitution of subsystem
227 * (for instance, a scheduler, kernel profiler, or VM system) by object
228 * module. Finally, it allows for optional "kernel threads".
234 struct sysinit **sipp; /* system initialization*/
235 struct sysinit **xipp; /* interior loop of sort*/
236 struct sysinit *save; /* bubble*/
239 #if defined(VERBOSE_SYSINIT)
245 if (boothowto & RB_VERBOSE)
248 if (sysinit == NULL) {
249 sysinit = SET_BEGIN(sysinit_set);
250 sysinit_end = SET_LIMIT(sysinit_set);
255 * Perform a bubble sort of the system initialization objects by
256 * their subsystem (primary key) and order (secondary key).
258 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
259 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
260 if ((*sipp)->subsystem < (*xipp)->subsystem ||
261 ((*sipp)->subsystem == (*xipp)->subsystem &&
262 (*sipp)->order <= (*xipp)->order))
270 last = SI_SUB_COPYRIGHT;
271 #if defined(VERBOSE_SYSINIT)
274 printf("VERBOSE_SYSINIT: DDB not enabled, symbol lookups disabled.\n");
279 * Traverse the (now) ordered list of system initialization tasks.
280 * Perform each task, and continue on to the next task.
282 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
283 if ((*sipp)->subsystem == SI_SUB_DUMMY)
284 continue; /* skip dummy task(s)*/
286 if ((*sipp)->subsystem == SI_SUB_DONE)
289 if ((*sipp)->subsystem > last)
290 BOOTTRACE_INIT("sysinit 0x%7x", (*sipp)->subsystem);
292 #if defined(VERBOSE_SYSINIT)
293 if ((*sipp)->subsystem > last && verbose_sysinit != 0) {
295 printf("subsystem %x\n", last);
299 const char *func, *data;
301 func = symbol_name((vm_offset_t)(*sipp)->func,
303 data = symbol_name((vm_offset_t)(*sipp)->udata,
305 if (func != NULL && data != NULL)
306 printf(" %s(&%s)... ", func, data);
307 else if (func != NULL)
308 printf(" %s(%p)... ", func, (*sipp)->udata);
311 printf(" %p(%p)... ", (*sipp)->func,
317 (*((*sipp)->func))((*sipp)->udata);
319 #if defined(VERBOSE_SYSINIT)
324 /* Check off the one we're just done */
325 last = (*sipp)->subsystem;
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. */
341 BOOTTRACE("mi_startup done");
343 mtx_assert(&Giant, MA_OWNED | MA_NOTRECURSED);
347 * Now hand over this thread to swapper.
354 print_caddr_t(void *data)
356 printf("%s", (char *)data);
360 print_version(void *data __unused)
364 /* Strip a trailing newline from version. */
365 len = strlen(version);
366 while (len > 0 && version[len - 1] == '\n')
368 printf("%.*s %s\n", len, version, machine);
369 printf("%s\n", compiler_version);
372 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,
374 SYSINIT(trademark, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t,
376 SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_THIRD, print_version, NULL);
379 static char wit_warn[] =
380 "WARNING: WITNESS option enabled, expect reduced performance.\n";
381 SYSINIT(witwarn, SI_SUB_COPYRIGHT, SI_ORDER_FOURTH,
382 print_caddr_t, wit_warn);
383 SYSINIT(witwarn2, SI_SUB_LAST, SI_ORDER_FOURTH,
384 print_caddr_t, wit_warn);
388 static char diag_warn[] =
389 "WARNING: DIAGNOSTIC option enabled, expect reduced performance.\n";
390 SYSINIT(diagwarn, SI_SUB_COPYRIGHT, SI_ORDER_FIFTH,
391 print_caddr_t, diag_warn);
392 SYSINIT(diagwarn2, SI_SUB_LAST, SI_ORDER_FIFTH,
393 print_caddr_t, diag_warn);
397 null_fetch_syscall_args(struct thread *td __unused)
400 panic("null_fetch_syscall_args");
404 null_set_syscall_retval(struct thread *td __unused, int error __unused)
407 panic("null_set_syscall_retval");
411 null_set_fork_retval(struct thread *td __unused)
416 struct sysentvec null_sysvec = {
419 .sv_transtrap = NULL,
423 .sv_szsigcode = NULL,
426 .sv_imgact_try = NULL,
428 .sv_minuser = VM_MIN_ADDRESS,
429 .sv_maxuser = VM_MAXUSER_ADDRESS,
430 .sv_usrstack = USRSTACK,
431 .sv_psstrings = PS_STRINGS,
432 .sv_psstringssz = sizeof(struct ps_strings),
433 .sv_stackprot = VM_PROT_ALL,
434 .sv_copyout_strings = NULL,
439 .sv_set_syscall_retval = null_set_syscall_retval,
440 .sv_fetch_syscall_args = null_fetch_syscall_args,
441 .sv_syscallnames = NULL,
442 .sv_schedtail = NULL,
443 .sv_thread_detach = NULL,
445 .sv_set_fork_retval = null_set_fork_retval,
446 .sv_regset_begin = NULL,
447 .sv_regset_end = NULL,
451 * The two following SYSINIT's are proc0 specific glue code. I am not
452 * convinced that they can not be safely combined, but their order of
453 * operation has been maintained as the same as the original init_main.c
458 proc0_init(void *dummy __unused)
462 struct ucred *newcred;
463 struct uidinfo tmpuinfo;
464 struct loginclass tmplc = {
467 vm_paddr_t pageablemem;
475 * Initialize magic number and osrel.
477 p->p_magic = P_MAGIC;
478 p->p_osrel = osreldate;
481 * Initialize thread and process structures.
483 procinit(); /* set up proc zone */
484 threadinit(); /* set up UMA zones */
487 * Initialise scheduler resources.
488 * Add scheduler specific parts to proc, thread as needed.
490 schedinit(); /* scheduler gets its house in order */
493 * Create process 0 (the swapper).
495 LIST_INSERT_HEAD(&allproc, p, p_list);
496 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
497 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
499 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
500 LIST_INIT(&pgrp0.pg_members);
501 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
503 pgrp0.pg_session = &session0;
504 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
505 refcount_init(&session0.s_count, 1);
506 session0.s_leader = p;
508 p->p_sysent = &null_sysvec;
509 p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
511 p->p_state = PRS_NORMAL;
512 p->p_klist = knlist_alloc(&p->p_mtx);
513 STAILQ_INIT(&p->p_ktr);
515 td->td_tid = THREAD0_TID;
517 TD_SET_STATE(td, TDS_RUNNING);
518 td->td_pri_class = PRI_TIMESHARE;
519 td->td_user_pri = PUSER;
520 td->td_base_user_pri = PUSER;
521 td->td_lend_user_pri = PRI_MAX;
522 td->td_priority = PVM;
523 td->td_base_pri = PVM;
524 td->td_oncpu = curcpu;
525 td->td_flags = TDF_INMEM;
526 td->td_pflags = TDP_KTHREAD;
527 td->td_cpuset = cpuset_thread0();
528 td->td_domain.dr_policy = td->td_cpuset->cs_domain;
533 p->p_treeflag |= P_TREE_REAPER;
534 LIST_INIT(&p->p_reaplist);
536 strncpy(p->p_comm, "kernel", sizeof (p->p_comm));
537 strncpy(td->td_name, "swapper", sizeof (td->td_name));
539 callout_init_mtx(&p->p_itcallout, &p->p_mtx, 0);
540 callout_init_mtx(&p->p_limco, &p->p_mtx, 0);
541 callout_init(&td->td_slpcallout, 1);
542 TAILQ_INIT(&p->p_kqtim_stop);
544 /* Create credentials. */
546 newcred->cr_ngroups = 1; /* group 0 */
547 /* A hack to prevent uifind from tripping over NULL pointers. */
548 curthread->td_ucred = newcred;
550 newcred->cr_uidinfo = newcred->cr_ruidinfo = &tmpuinfo;
551 newcred->cr_uidinfo = uifind(0);
552 newcred->cr_ruidinfo = uifind(0);
553 newcred->cr_loginclass = &tmplc;
554 newcred->cr_loginclass = loginclass_find("default");
555 /* End hack. creds get properly set later with thread_cow_get_proc */
556 curthread->td_ucred = NULL;
557 newcred->cr_prison = &prison0;
558 newcred->cr_users++; /* avoid assertion failure */
559 proc_set_cred_init(p, newcred);
563 audit_cred_kproc0(newcred);
566 mac_cred_create_swapper(newcred);
568 /* Create sigacts. */
569 p->p_sigacts = sigacts_alloc();
571 /* Initialize signal state for process 0. */
574 /* Create the file descriptor table. */
575 p->p_pd = pdinit(NULL, false);
579 /* Create the limits structures. */
580 p->p_limit = lim_alloc();
581 for (i = 0; i < RLIM_NLIMITS; i++)
582 p->p_limit->pl_rlimit[i].rlim_cur =
583 p->p_limit->pl_rlimit[i].rlim_max = RLIM_INFINITY;
584 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_cur =
585 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
586 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_cur =
587 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
588 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_cur = dfldsiz;
589 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_max = maxdsiz;
590 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_cur = dflssiz;
591 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_max = maxssiz;
592 /* Cast to avoid overflow on i386/PAE. */
593 pageablemem = ptoa((vm_paddr_t)vm_free_count());
594 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_cur =
595 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_max = pageablemem;
596 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = pageablemem / 3;
597 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_max = pageablemem;
598 p->p_cpulimit = RLIM_INFINITY;
601 thread_cow_get_proc(td, p);
604 /* Initialize resource accounting structures. */
605 racct_create(&p->p_racct);
607 p->p_stats = pstats_alloc();
609 /* Allocate a prototype map so we have something to fork. */
610 p->p_vmspace = &vmspace0;
611 refcount_init(&vmspace0.vm_refcnt, 1);
612 pmap_pinit0(vmspace_pmap(&vmspace0));
615 * proc0 is not expected to enter usermode, so there is no special
616 * handling for sv_minuser here, like is done for exec_new_vmspace().
618 vm_map_init(&vmspace0.vm_map, vmspace_pmap(&vmspace0),
619 p->p_sysent->sv_minuser, p->p_sysent->sv_maxuser);
622 * Call the init and ctor for the new thread and proc. We wait
623 * to do this until all other structures are fairly sane.
625 EVENTHANDLER_DIRECT_INVOKE(process_init, p);
626 EVENTHANDLER_DIRECT_INVOKE(thread_init, td);
628 kdtrace_proc_ctor(p);
629 kdtrace_thread_ctor(td);
631 EVENTHANDLER_DIRECT_INVOKE(process_ctor, p);
632 EVENTHANDLER_DIRECT_INVOKE(thread_ctor, td);
635 * Charge root for one process.
637 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
639 racct_add_force(p, RACCT_NPROC, 1);
642 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
646 proc0_post(void *dummy __unused)
653 * Now we can look at the time, having had a chance to verify the
654 * time from the filesystem. Pretend that proc0 started now.
656 sx_slock(&allproc_lock);
657 FOREACH_PROC_IN_SYSTEM(p) {
659 if (p->p_state == PRS_NEW) {
663 microuptime(&p->p_stats->p_start);
665 rufetch(p, &ru); /* Clears thread stats */
666 p->p_rux.rux_runtime = 0;
667 p->p_rux.rux_uticks = 0;
668 p->p_rux.rux_sticks = 0;
669 p->p_rux.rux_iticks = 0;
671 FOREACH_THREAD_IN_PROC(p, td) {
676 sx_sunlock(&allproc_lock);
677 PCPU_SET(switchtime, cpu_ticks());
678 PCPU_SET(switchticks, ticks);
680 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, 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 /* For Multicons, report which console is primary to both */
741 if (boothowto & RB_MULTIPLE) {
742 if (boothowto & RB_SERIAL)
743 printf("Dual Console: Serial Primary, Video Secondary\n");
745 printf("Dual Console: Video Primary, Serial Secondary\n");
748 if ((var = kern_getenv("init_path")) != NULL) {
749 strlcpy(init_path, var, sizeof(init_path));
752 free_init_path = tmp_init_path = strdup(init_path, M_TEMP);
754 while ((path = strsep(&tmp_init_path, ":")) != NULL) {
756 printf("start_init: trying %s\n", path);
758 memset(&args, 0, sizeof(args));
759 error = exec_alloc_args(&args);
761 panic("%s: Can't allocate space for init arguments %d",
764 error = exec_args_add_fname(&args, path, UIO_SYSSPACE);
766 panic("%s: Can't add fname %d", __func__, error);
767 error = exec_args_add_arg(&args, path, UIO_SYSSPACE);
769 panic("%s: Can't add argv[0] %d", __func__, error);
770 if (boothowto & RB_SINGLE)
771 error = exec_args_add_arg(&args, "-s", UIO_SYSSPACE);
773 panic("%s: Can't add argv[0] %d", __func__, error);
776 * Now try to exec the program. If can't for any reason
777 * other than it doesn't exist, complain.
779 * Otherwise, return via fork_trampoline() all the way
780 * to user mode as init!
782 KASSERT((td->td_pflags & TDP_EXECVMSPC) == 0,
784 oldvmspace = p->p_vmspace;
785 error = kern_execve(td, &args, NULL, oldvmspace);
787 ("kern_execve returned success, not EJUSTRETURN"));
788 if (error == EJUSTRETURN) {
789 exec_cleanup(td, oldvmspace);
790 free(free_init_path, M_TEMP);
795 printf("exec %s: error %d\n", path, error);
797 free(free_init_path, M_TEMP);
798 printf("init: not found in path %s\n", init_path);
803 * Like kproc_create(), but runs in its own address space. We do this
804 * early to reserve pid 1. Note special case - do not make it
805 * runnable yet, init execution is started when userspace can be served.
808 create_init(const void *udata __unused)
811 struct ucred *newcred, *oldcred;
815 bzero(&fr, sizeof(fr));
816 fr.fr_flags = RFFDG | RFPROC | RFSTOPPED;
817 fr.fr_procp = &initproc;
818 error = fork1(&thread0, &fr);
820 panic("cannot fork init: %d\n", error);
821 KASSERT(initproc->p_pid == 1, ("create_init: initproc->p_pid != 1"));
822 /* divorce init's credentials from the kernel's */
824 sx_xlock(&proctree_lock);
826 initproc->p_flag |= P_SYSTEM | P_INMEM;
827 initproc->p_treeflag |= P_TREE_REAPER;
828 oldcred = initproc->p_ucred;
829 crcopy(newcred, oldcred);
831 mac_cred_create_init(newcred);
834 audit_cred_proc1(newcred);
836 proc_set_cred(initproc, newcred);
837 td = FIRST_THREAD_IN_PROC(initproc);
839 td->td_realucred = crcowget(initproc->p_ucred);
840 td->td_ucred = td->td_realucred;
841 PROC_UNLOCK(initproc);
842 sx_xunlock(&proctree_lock);
844 cpu_fork_kthread_handler(FIRST_THREAD_IN_PROC(initproc),
847 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL);
850 * Make it runnable now.
853 kick_init(const void *udata __unused)
857 td = FIRST_THREAD_IN_PROC(initproc);
860 sched_add(td, SRQ_BORING);
862 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_MIDDLE, kick_init, NULL);
869 db_show_print_syinit(struct sysinit *sip, bool ddb)
871 const char *sname, *funcname;
875 #define xprint(...) \
877 db_printf(__VA_ARGS__); \
882 xprint("%s: no sysinit * given\n", __func__);
886 sym = db_search_symbol((vm_offset_t)sip, DB_STGY_ANY, &offset);
887 db_symbol_values(sym, &sname, NULL);
888 sym = db_search_symbol((vm_offset_t)sip->func, DB_STGY_PROC, &offset);
889 db_symbol_values(sym, &funcname, NULL);
890 xprint("%s(%p)\n", (sname != NULL) ? sname : "", sip);
891 xprint(" %#08x %#08x\n", sip->subsystem, sip->order);
892 xprint(" %p(%s)(%p)\n",
893 sip->func, (funcname != NULL) ? funcname : "", sip->udata);
897 DB_SHOW_COMMAND(sysinit, db_show_sysinit)
899 struct sysinit **sipp;
901 db_printf("SYSINIT vs Name(Ptr)\n");
902 db_printf(" Subsystem Order\n");
903 db_printf(" Function(Name)(Arg)\n");
904 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
905 db_show_print_syinit(*sipp, true);