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>
49 #include "opt_init_path.h"
50 #include "opt_verbose_sysinit.h"
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/boottrace.h>
56 #include <sys/cpuset.h>
57 #include <sys/dtrace_bsd.h>
58 #include <sys/epoch.h>
59 #include <sys/eventhandler.h>
62 #include <sys/filedesc.h>
63 #include <sys/imgact.h>
65 #include <sys/kernel.h>
68 #include <sys/loginclass.h>
69 #include <sys/malloc.h>
70 #include <sys/mount.h>
71 #include <sys/mutex.h>
73 #include <sys/racct.h>
74 #include <sys/reboot.h>
75 #include <sys/resourcevar.h>
76 #include <sys/queue.h>
77 #include <sys/queue_mergesort.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 linker set compiled into the kernel. These are placed onto the
160 * sysinit list by mi_startup; sysinit_add can add (e.g., from klds) additional
161 * sysinits to the linked list but the linker set here does not change.
163 SET_DECLARE(sysinit_set, struct sysinit);
166 * The sysinit lists. Items are moved to sysinit_done_list when done.
168 static STAILQ_HEAD(sysinitlist, sysinit) sysinit_list;
169 static struct sysinitlist sysinit_done_list =
170 STAILQ_HEAD_INITIALIZER(sysinit_done_list);
173 * Compare two sysinits; return -1, 0, or 1 if a comes before, at the same time
177 sysinit_compar(struct sysinit *a, struct sysinit *b, void *thunk __unused)
180 if (a->subsystem < b->subsystem)
182 if (a->subsystem > b->subsystem)
184 if (a->order < b->order)
186 if (a->order > b->order)
192 sysinit_mklist(struct sysinitlist *list, struct sysinit **set,
193 struct sysinit **set_end)
195 struct sysinit **sipp;
200 for (sipp = set; sipp < set_end; sipp++)
201 STAILQ_INSERT_TAIL(list, *sipp, next);
203 TSENTER2("mergesort");
204 STAILQ_MERGESORT(list, NULL, sysinit_compar, sysinit, next);
205 TSEXIT2("mergesort");
210 * Merge a new sysinit set into the sysinit list.
213 sysinit_add(struct sysinit **set, struct sysinit **set_end)
215 struct sysinitlist new_list;
219 /* Construct a sorted list from the new sysinits. */
220 sysinit_mklist(&new_list, set, set_end);
222 /* Merge the new list into the existing one. */
223 TSENTER2("STAILQ_MERGE");
224 STAILQ_MERGE(&sysinit_list, &new_list, NULL, sysinit_compar, sysinit, next);
225 TSEXIT2("STAILQ_MERGE");
230 #if defined (DDB) && defined(VERBOSE_SYSINIT)
232 symbol_name(vm_offset_t va, db_strategy_t strategy)
240 sym = db_search_symbol(va, strategy, &offset);
243 db_symbol_values(sym, &name, NULL);
249 * System startup; initialize the world, create process 0, mount root
250 * filesystem, and fork to create init and pagedaemon. Most of the
251 * hard work is done in the lower-level initialization routines including
252 * startup(), which does memory initialization and autoconfiguration.
254 * This allows simple addition of new kernel subsystems that require
255 * boot time initialization. It also allows substitution of subsystem
256 * (for instance, a scheduler, kernel profiler, or VM system) by object
257 * module. Finally, it allows for optional "kernel threads".
265 #if defined(VERBOSE_SYSINIT)
271 if (boothowto & RB_VERBOSE)
274 /* Construct and sort sysinit list. */
275 sysinit_mklist(&sysinit_list, SET_BEGIN(sysinit_set), SET_LIMIT(sysinit_set));
277 last = SI_SUB_COPYRIGHT;
278 #if defined(VERBOSE_SYSINIT)
281 printf("VERBOSE_SYSINIT: DDB not enabled, symbol lookups disabled.\n");
286 * Perform each system initialization task from the ordered list. Note
287 * that if sysinit_list is modified (e.g. by a KLD) we will nonetheless
288 * always perform the earlist-sorted sysinit at each step; using the
289 * STAILQ_FOREACH macro would result in items being skipped if inserted
290 * earlier than the "current item".
292 while ((sip = STAILQ_FIRST(&sysinit_list)) != NULL) {
293 STAILQ_REMOVE_HEAD(&sysinit_list, next);
294 STAILQ_INSERT_TAIL(&sysinit_done_list, sip, next);
296 if (sip->subsystem == SI_SUB_DUMMY)
297 continue; /* skip dummy task(s)*/
299 if (sip->subsystem > last)
300 BOOTTRACE_INIT("sysinit 0x%7x", sip->subsystem);
302 #if defined(VERBOSE_SYSINIT)
303 if (sip->subsystem > last && verbose_sysinit != 0) {
305 printf("subsystem %x\n", last);
309 const char *func, *data;
311 func = symbol_name((vm_offset_t)sip->func,
313 data = symbol_name((vm_offset_t)sip->udata,
315 if (func != NULL && data != NULL)
316 printf(" %s(&%s)... ", func, data);
317 else if (func != NULL)
318 printf(" %s(%p)... ", func, sip->udata);
321 printf(" %p(%p)... ", sip->func,
327 (*(sip->func))(sip->udata);
329 #if defined(VERBOSE_SYSINIT)
334 /* Check off the one we're just done */
335 last = sip->subsystem;
338 TSEXIT(); /* Here so we don't overlap with start_init. */
339 BOOTTRACE("mi_startup done");
341 mtx_assert(&Giant, MA_OWNED | MA_NOTRECURSED);
345 * Now hand over this thread to swapper.
352 print_caddr_t(void *data)
354 printf("%s", (char *)data);
358 print_version(void *data __unused)
362 /* Strip a trailing newline from version. */
363 len = strlen(version);
364 while (len > 0 && version[len - 1] == '\n')
366 printf("%.*s %s\n", len, version, machine);
367 printf("%s\n", compiler_version);
370 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,
372 SYSINIT(trademark, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t,
374 SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_THIRD, print_version, NULL);
377 static char wit_warn[] =
378 "WARNING: WITNESS option enabled, expect reduced performance.\n";
379 SYSINIT(witwarn, SI_SUB_COPYRIGHT, SI_ORDER_FOURTH,
380 print_caddr_t, wit_warn);
381 SYSINIT(witwarn2, SI_SUB_LAST, SI_ORDER_FOURTH,
382 print_caddr_t, wit_warn);
386 static char diag_warn[] =
387 "WARNING: DIAGNOSTIC option enabled, expect reduced performance.\n";
388 SYSINIT(diagwarn, SI_SUB_COPYRIGHT, SI_ORDER_FIFTH,
389 print_caddr_t, diag_warn);
390 SYSINIT(diagwarn2, SI_SUB_LAST, SI_ORDER_FIFTH,
391 print_caddr_t, diag_warn);
394 #if __SIZEOF_LONG__ == 4
395 static char ilp32_warn[] =
396 "WARNING: 32-bit kernels are deprecated and may be removed in FreeBSD 15.0.\n";
397 SYSINIT(ilp32warn, SI_SUB_COPYRIGHT, SI_ORDER_FIFTH,
398 print_caddr_t, ilp32_warn);
399 SYSINIT(ilp32warn2, SI_SUB_LAST, SI_ORDER_FIFTH,
400 print_caddr_t, ilp32_warn);
404 null_fetch_syscall_args(struct thread *td __unused)
407 panic("null_fetch_syscall_args");
411 null_set_syscall_retval(struct thread *td __unused, int error __unused)
414 panic("null_set_syscall_retval");
418 null_set_fork_retval(struct thread *td __unused)
423 struct sysentvec null_sysvec = {
429 .sv_szsigcode = NULL,
433 .sv_minuser = VM_MIN_ADDRESS,
434 .sv_maxuser = VM_MAXUSER_ADDRESS,
435 .sv_usrstack = USRSTACK,
436 .sv_psstrings = PS_STRINGS,
437 .sv_psstringssz = sizeof(struct ps_strings),
438 .sv_stackprot = VM_PROT_ALL,
439 .sv_copyout_strings = NULL,
444 .sv_set_syscall_retval = null_set_syscall_retval,
445 .sv_fetch_syscall_args = null_fetch_syscall_args,
446 .sv_syscallnames = NULL,
447 .sv_schedtail = NULL,
448 .sv_thread_detach = NULL,
450 .sv_set_fork_retval = null_set_fork_retval,
451 .sv_regset_begin = NULL,
452 .sv_regset_end = NULL,
456 * The two following SYSINIT's are proc0 specific glue code. I am not
457 * convinced that they can not be safely combined, but their order of
458 * operation has been maintained as the same as the original init_main.c
463 proc0_init(void *dummy __unused)
467 struct ucred *newcred;
468 struct uidinfo tmpuinfo;
469 struct loginclass tmplc = {
472 vm_paddr_t pageablemem;
480 * Initialize magic number and osrel.
482 p->p_magic = P_MAGIC;
483 p->p_osrel = osreldate;
486 * Initialize thread and process structures.
488 procinit(); /* set up proc zone */
489 threadinit(); /* set up UMA zones */
492 * Initialise scheduler resources.
493 * Add scheduler specific parts to proc, thread as needed.
495 schedinit(); /* scheduler gets its house in order */
498 * Create process 0 (the swapper).
500 LIST_INSERT_HEAD(&allproc, p, p_list);
501 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
502 mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
503 sx_init(&pgrp0.pg_killsx, "killpg racer");
505 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
506 LIST_INIT(&pgrp0.pg_members);
507 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
509 pgrp0.pg_session = &session0;
510 mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
511 refcount_init(&session0.s_count, 1);
512 session0.s_leader = p;
514 p->p_sysent = &null_sysvec;
515 p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
517 p->p_state = PRS_NORMAL;
518 p->p_klist = knlist_alloc(&p->p_mtx);
519 STAILQ_INIT(&p->p_ktr);
521 td->td_tid = THREAD0_TID;
523 TD_SET_STATE(td, TDS_RUNNING);
524 td->td_pri_class = PRI_TIMESHARE;
525 td->td_user_pri = PUSER;
526 td->td_base_user_pri = PUSER;
527 td->td_lend_user_pri = PRI_MAX;
528 td->td_priority = PVM;
529 td->td_base_pri = PVM;
530 td->td_oncpu = curcpu;
531 td->td_flags = TDF_INMEM;
532 td->td_pflags = TDP_KTHREAD;
533 td->td_cpuset = cpuset_thread0();
534 td->td_domain.dr_policy = td->td_cpuset->cs_domain;
539 p->p_treeflag |= P_TREE_REAPER;
540 LIST_INIT(&p->p_reaplist);
542 strncpy(p->p_comm, "kernel", sizeof (p->p_comm));
543 strncpy(td->td_name, "swapper", sizeof (td->td_name));
545 callout_init_mtx(&p->p_itcallout, &p->p_mtx, 0);
546 callout_init_mtx(&p->p_limco, &p->p_mtx, 0);
547 callout_init(&td->td_slpcallout, 1);
548 TAILQ_INIT(&p->p_kqtim_stop);
550 /* Create credentials. */
552 newcred->cr_ngroups = 1; /* group 0 */
553 /* A hack to prevent uifind from tripping over NULL pointers. */
554 curthread->td_ucred = newcred;
556 newcred->cr_uidinfo = newcred->cr_ruidinfo = &tmpuinfo;
557 newcred->cr_uidinfo = uifind(0);
558 newcred->cr_ruidinfo = uifind(0);
559 newcred->cr_loginclass = &tmplc;
560 newcred->cr_loginclass = loginclass_find("default");
561 /* End hack. creds get properly set later with thread_cow_get_proc */
562 curthread->td_ucred = NULL;
563 newcred->cr_prison = &prison0;
564 newcred->cr_users++; /* avoid assertion failure */
565 proc_set_cred_init(p, newcred);
569 audit_cred_kproc0(newcred);
572 mac_cred_create_swapper(newcred);
574 /* Create sigacts. */
575 p->p_sigacts = sigacts_alloc();
577 /* Initialize signal state for process 0. */
580 /* Create the file descriptor table. */
581 p->p_pd = pdinit(NULL, false);
585 /* Create the limits structures. */
586 p->p_limit = lim_alloc();
587 for (i = 0; i < RLIM_NLIMITS; i++)
588 p->p_limit->pl_rlimit[i].rlim_cur =
589 p->p_limit->pl_rlimit[i].rlim_max = RLIM_INFINITY;
590 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_cur =
591 p->p_limit->pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
592 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_cur =
593 p->p_limit->pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
594 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_cur = dfldsiz;
595 p->p_limit->pl_rlimit[RLIMIT_DATA].rlim_max = maxdsiz;
596 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_cur = dflssiz;
597 p->p_limit->pl_rlimit[RLIMIT_STACK].rlim_max = maxssiz;
598 /* Cast to avoid overflow on i386/PAE. */
599 pageablemem = ptoa((vm_paddr_t)vm_free_count());
600 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_cur =
601 p->p_limit->pl_rlimit[RLIMIT_RSS].rlim_max = pageablemem;
602 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = pageablemem / 3;
603 p->p_limit->pl_rlimit[RLIMIT_MEMLOCK].rlim_max = pageablemem;
604 p->p_cpulimit = RLIM_INFINITY;
607 thread_cow_get_proc(td, p);
610 /* Initialize resource accounting structures. */
611 racct_create(&p->p_racct);
613 p->p_stats = pstats_alloc();
615 /* Allocate a prototype map so we have something to fork. */
616 p->p_vmspace = &vmspace0;
617 refcount_init(&vmspace0.vm_refcnt, 1);
618 pmap_pinit0(vmspace_pmap(&vmspace0));
621 * proc0 is not expected to enter usermode, so there is no special
622 * handling for sv_minuser here, like is done for exec_new_vmspace().
624 vm_map_init(&vmspace0.vm_map, vmspace_pmap(&vmspace0),
625 p->p_sysent->sv_minuser, p->p_sysent->sv_maxuser);
628 * Call the init and ctor for the new thread and proc. We wait
629 * to do this until all other structures are fairly sane.
631 EVENTHANDLER_DIRECT_INVOKE(process_init, p);
632 EVENTHANDLER_DIRECT_INVOKE(thread_init, td);
634 kdtrace_proc_ctor(p);
635 kdtrace_thread_ctor(td);
637 EVENTHANDLER_DIRECT_INVOKE(process_ctor, p);
638 EVENTHANDLER_DIRECT_INVOKE(thread_ctor, td);
641 * Charge root for one process.
643 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
645 racct_add_force(p, RACCT_NPROC, 1);
648 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
652 proc0_post(void *dummy __unused)
659 * Now we can look at the time, having had a chance to verify the
660 * time from the filesystem. Pretend that proc0 started now.
662 sx_slock(&allproc_lock);
663 FOREACH_PROC_IN_SYSTEM(p) {
665 if (p->p_state == PRS_NEW) {
669 microuptime(&p->p_stats->p_start);
671 rufetch(p, &ru); /* Clears thread stats */
672 p->p_rux.rux_runtime = 0;
673 p->p_rux.rux_uticks = 0;
674 p->p_rux.rux_sticks = 0;
675 p->p_rux.rux_iticks = 0;
677 FOREACH_THREAD_IN_PROC(p, td) {
682 sx_sunlock(&allproc_lock);
683 PCPU_SET(switchtime, cpu_ticks());
684 PCPU_SET(switchticks, ticks);
686 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL);
689 ***************************************************************************
691 **** The following SYSINIT's and glue code should be moved to the
692 **** respective files on a per subsystem basis.
694 ***************************************************************************
698 * List of paths to try when searching for "init".
700 static char init_path[MAXPATHLEN] =
702 __XSTRING(INIT_PATH);
704 "/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init";
706 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0,
707 "Path used to search the init process");
710 * Shutdown timeout of init(8).
711 * Unused within kernel, but used to control init(8), hence do not remove.
713 #ifndef INIT_SHUTDOWN_TIMEOUT
714 #define INIT_SHUTDOWN_TIMEOUT 120
716 static int init_shutdown_timeout = INIT_SHUTDOWN_TIMEOUT;
717 SYSCTL_INT(_kern, OID_AUTO, init_shutdown_timeout,
718 CTLFLAG_RW, &init_shutdown_timeout, 0, "Shutdown timeout of init(8). "
719 "Unused within kernel, but used to control init(8)");
722 * Start the initial user process; try exec'ing each pathname in init_path.
723 * The program is invoked with one argument containing the boot flags.
726 start_init(void *dummy)
728 struct image_args args;
731 char *free_init_path, *tmp_init_path;
734 struct vmspace *oldvmspace;
736 TSENTER(); /* Here so we don't overlap with mi_startup. */
743 /* Wipe GELI passphrase from the environment. */
744 kern_unsetenv("kern.geom.eli.passphrase");
746 /* For Multicons, report which console is primary to both */
747 if (boothowto & RB_MULTIPLE) {
748 if (boothowto & RB_SERIAL)
749 printf("Dual Console: Serial Primary, Video Secondary\n");
751 printf("Dual Console: Video Primary, Serial Secondary\n");
754 if ((var = kern_getenv("init_path")) != NULL) {
755 strlcpy(init_path, var, sizeof(init_path));
758 free_init_path = tmp_init_path = strdup(init_path, M_TEMP);
760 while ((path = strsep(&tmp_init_path, ":")) != NULL) {
762 printf("start_init: trying %s\n", path);
764 memset(&args, 0, sizeof(args));
765 error = exec_alloc_args(&args);
767 panic("%s: Can't allocate space for init arguments %d",
770 error = exec_args_add_fname(&args, path, UIO_SYSSPACE);
772 panic("%s: Can't add fname %d", __func__, error);
773 error = exec_args_add_arg(&args, path, UIO_SYSSPACE);
775 panic("%s: Can't add argv[0] %d", __func__, error);
776 if (boothowto & RB_SINGLE)
777 error = exec_args_add_arg(&args, "-s", UIO_SYSSPACE);
779 panic("%s: Can't add argv[0] %d", __func__, error);
782 * Now try to exec the program. If can't for any reason
783 * other than it doesn't exist, complain.
785 * Otherwise, return via fork_trampoline() all the way
786 * to user mode as init!
788 KASSERT((td->td_pflags & TDP_EXECVMSPC) == 0,
790 oldvmspace = p->p_vmspace;
791 error = kern_execve(td, &args, NULL, oldvmspace);
793 ("kern_execve returned success, not EJUSTRETURN"));
794 if (error == EJUSTRETURN) {
795 exec_cleanup(td, oldvmspace);
796 free(free_init_path, M_TEMP);
801 printf("exec %s: error %d\n", path, error);
803 free(free_init_path, M_TEMP);
804 printf("init: not found in path %s\n", init_path);
809 * Like kproc_create(), but runs in its own address space. We do this
810 * early to reserve pid 1. Note special case - do not make it
811 * runnable yet, init execution is started when userspace can be served.
814 create_init(const void *udata __unused)
817 struct ucred *newcred, *oldcred;
821 bzero(&fr, sizeof(fr));
822 fr.fr_flags = RFFDG | RFPROC | RFSTOPPED;
823 fr.fr_procp = &initproc;
824 error = fork1(&thread0, &fr);
826 panic("cannot fork init: %d\n", error);
827 KASSERT(initproc->p_pid == 1, ("create_init: initproc->p_pid != 1"));
828 /* divorce init's credentials from the kernel's */
830 sx_xlock(&proctree_lock);
832 initproc->p_flag |= P_SYSTEM | P_INMEM;
833 initproc->p_treeflag |= P_TREE_REAPER;
834 oldcred = initproc->p_ucred;
835 crcopy(newcred, oldcred);
837 mac_cred_create_init(newcred);
840 audit_cred_proc1(newcred);
842 proc_set_cred(initproc, newcred);
843 td = FIRST_THREAD_IN_PROC(initproc);
845 td->td_realucred = crcowget(initproc->p_ucred);
846 td->td_ucred = td->td_realucred;
847 PROC_UNLOCK(initproc);
848 sx_xunlock(&proctree_lock);
850 cpu_fork_kthread_handler(FIRST_THREAD_IN_PROC(initproc),
853 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL);
856 * Make it runnable now.
859 kick_init(const void *udata __unused)
863 td = FIRST_THREAD_IN_PROC(initproc);
866 sched_add(td, SRQ_BORING);
868 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_MIDDLE, kick_init, NULL);
875 db_show_print_syinit(struct sysinit *sip, bool ddb)
877 const char *sname, *funcname;
881 #define xprint(...) \
883 db_printf(__VA_ARGS__); \
888 xprint("%s: no sysinit * given\n", __func__);
892 sym = db_search_symbol((vm_offset_t)sip, DB_STGY_ANY, &offset);
893 db_symbol_values(sym, &sname, NULL);
894 sym = db_search_symbol((vm_offset_t)sip->func, DB_STGY_PROC, &offset);
895 db_symbol_values(sym, &funcname, NULL);
896 xprint("%s(%p)\n", (sname != NULL) ? sname : "", sip);
897 xprint(" %#08x %#08x\n", sip->subsystem, sip->order);
898 xprint(" %p(%s)(%p)\n",
899 sip->func, (funcname != NULL) ? funcname : "", sip->udata);
903 DB_SHOW_COMMAND_FLAGS(sysinit, db_show_sysinit, DB_CMD_MEMSAFE)
907 db_printf("SYSINIT vs Name(Ptr)\n");
908 db_printf(" Subsystem Order\n");
909 db_printf(" Function(Name)(Arg)\n");
910 STAILQ_FOREACH(sip, &sysinit_done_list, next) {
911 db_show_print_syinit(sip, true);
915 STAILQ_FOREACH(sip, &sysinit_list, next) {
916 db_show_print_syinit(sip, true);