FreeBSD/Linux Kernel Cross Reference
sys/kern/init_main.c
1 /*
2 * Copyright (c) 1995 Terrence R. Lambert
3 * All rights reserved.
4 *
5 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 * (c) UNIX System Laboratories, Inc.
8 * All or some portions of this file are derived from material licensed
9 * to the University of California by American Telephone and Telegraph
10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
11 * the permission of UNIX System Laboratories, Inc.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * @(#)init_main.c 8.9 (Berkeley) 1/21/94
42 * $FreeBSD$
43 */
44
45 #include "opt_devfs.h"
46 #include "opt_init_path.h"
47
48 #include <sys/param.h>
49 #include <sys/file.h>
50 #include <sys/filedesc.h>
51 #include <sys/kernel.h>
52 #include <sys/mount.h>
53 #include <sys/sysctl.h>
54 #include <sys/proc.h>
55 #include <sys/resourcevar.h>
56 #include <sys/signalvar.h>
57 #include <sys/systm.h>
58 #include <sys/vnode.h>
59 #include <sys/sysent.h>
60 #include <sys/reboot.h>
61 #include <sys/sysproto.h>
62 #include <sys/vmmeter.h>
63 #include <sys/unistd.h>
64 #include <sys/malloc.h>
65
66 #include <machine/cpu.h>
67
68 #include <vm/vm.h>
69 #include <vm/vm_param.h>
70 #include <vm/vm_prot.h>
71 #include <sys/lock.h>
72 #include <vm/pmap.h>
73 #include <vm/vm_map.h>
74 #include <sys/user.h>
75 #include <sys/copyright.h>
76
77 extern struct linker_set sysinit_set; /* XXX */
78
79 extern void __main __P((void));
80 extern void main __P((void *framep));
81
82 /* Components of the first process -- never freed. */
83 static struct session session0;
84 static struct pgrp pgrp0;
85 struct proc proc0;
86 static struct pcred cred0;
87 static struct procsig procsig0;
88 static struct filedesc0 filedesc0;
89 static struct plimit limit0;
90 static struct vmspace vmspace0;
91 struct proc *initproc;
92
93 int cmask = CMASK;
94 extern struct user *proc0paddr;
95
96 struct vnode *rootvp;
97 int boothowto = 0; /* initialized so that it can be patched */
98
99 struct timeval boottime;
100 SYSCTL_STRUCT(_kern, KERN_BOOTTIME, boottime,
101 CTLFLAG_RD, &boottime, timeval, "");
102
103 /*
104 * Promiscuous argument pass for start_init()
105 *
106 * This is a kludge because we use a return from main() rather than a call
107 * to a new routine in locore.s to kick the kernel alive from locore.s.
108 */
109 static void *init_framep;
110
111
112 #if __GNUC__ >= 2
113 void __main() {}
114 #endif
115
116
117 /*
118 * This ensures that there is at least one entry so that the sysinit_set
119 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never
120 * executed.
121 */
122 SYSINIT(placeholder, SI_SUB_DUMMY,SI_ORDER_ANY, NULL, NULL)
123
124 /*
125 * The sysinit table itself. Items are checked off as the are run.
126 * If we want to register new sysinit types, add them to newsysinit.
127 */
128 struct sysinit **sysinit = (struct sysinit **)sysinit_set.ls_items;
129 struct sysinit **newsysinit;
130
131 /*
132 * Merge a new sysinit set into the current set, reallocating it if
133 * necessary. This can only be called after malloc is running.
134 */
135 void
136 sysinit_add(set)
137 struct sysinit **set;
138 {
139 struct sysinit **newset;
140 struct sysinit **sipp;
141 struct sysinit **xipp;
142 int count = 0;
143
144 if (newsysinit)
145 for (sipp = newsysinit; *sipp; sipp++)
146 count++;
147 else
148 for (sipp = sysinit; *sipp; sipp++)
149 count++;
150 for (sipp = set; *sipp; sipp++)
151 count++;
152 count++; /* Trailing NULL */
153 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT);
154 if (newset == NULL)
155 panic("cannot malloc for sysinit");
156 xipp = newset;
157 if (newsysinit)
158 for (sipp = newsysinit; *sipp; sipp++)
159 *xipp++ = *sipp;
160 else
161 for (sipp = sysinit; *sipp; sipp++)
162 *xipp++ = *sipp;
163 for (sipp = set; *sipp; sipp++)
164 *xipp++ = *sipp;
165 *xipp = NULL;
166 if (newsysinit)
167 free(newsysinit, M_TEMP);
168 newsysinit = newset;
169 }
170
171 /*
172 * System startup; initialize the world, create process 0, mount root
173 * filesystem, and fork to create init and pagedaemon. Most of the
174 * hard work is done in the lower-level initialization routines including
175 * startup(), which does memory initialization and autoconfiguration.
176 *
177 * This allows simple addition of new kernel subsystems that require
178 * boot time initialization. It also allows substitution of subsystem
179 * (for instance, a scheduler, kernel profiler, or VM system) by object
180 * module. Finally, it allows for optional "kernel threads".
181 */
182 void
183 main(framep)
184 void *framep;
185 {
186
187 register struct sysinit **sipp; /* system initialization*/
188 register struct sysinit **xipp; /* interior loop of sort*/
189 register struct sysinit *save; /* bubble*/
190
191 /*
192 * Copy the locore.s frame pointer for proc0, this is forked into
193 * all other processes.
194 */
195 init_framep = framep;
196
197 restart:
198 /*
199 * Perform a bubble sort of the system initialization objects by
200 * their subsystem (primary key) and order (secondary key).
201 */
202 for (sipp = sysinit; *sipp; sipp++) {
203 for (xipp = sipp + 1; *xipp; xipp++) {
204 if ((*sipp)->subsystem < (*xipp)->subsystem ||
205 ((*sipp)->subsystem == (*xipp)->subsystem &&
206 (*sipp)->order < (*xipp)->order))
207 continue; /* skip*/
208 save = *sipp;
209 *sipp = *xipp;
210 *xipp = save;
211 }
212 }
213
214 /*
215 * Traverse the (now) ordered list of system initialization tasks.
216 * Perform each task, and continue on to the next task.
217 *
218 * The last item on the list is expected to be the scheduler,
219 * which will not return.
220 */
221 for (sipp = sysinit; *sipp; sipp++) {
222
223 if ((*sipp)->subsystem == SI_SUB_DUMMY)
224 continue; /* skip dummy task(s)*/
225
226 if ((*sipp)->subsystem == SI_SUB_DONE)
227 continue;
228
229 switch( (*sipp)->type) {
230 case SI_TYPE_DEFAULT:
231 /* no special processing*/
232 (*((*sipp)->func))((*sipp)->udata);
233 break;
234
235 case SI_TYPE_KTHREAD:
236 #if !defined(SMP)
237 /* kernel thread*/
238 if (fork1(&proc0, RFMEM|RFFDG|RFPROC))
239 panic("fork kernel thread");
240 cpu_set_fork_handler(pfind(proc0.p_retval[0]),
241 (*sipp)->func, (*sipp)->udata);
242 break;
243 #endif
244
245 case SI_TYPE_KPROCESS:
246 if (fork1(&proc0, RFFDG|RFPROC))
247 panic("fork kernel process");
248 cpu_set_fork_handler(pfind(proc0.p_retval[0]),
249 (*sipp)->func, (*sipp)->udata);
250 break;
251
252 default:
253 panic("init_main: unrecognized init type");
254 }
255
256 /* Check off the one we're just done */
257 (*sipp)->subsystem = SI_SUB_DONE;
258
259 /* Check if we've installed more sysinit items via KLD */
260 if (newsysinit != NULL) {
261 if (sysinit != (struct sysinit **)sysinit_set.ls_items)
262 free(sysinit, M_TEMP);
263 sysinit = newsysinit;
264 newsysinit = NULL;
265 goto restart;
266 }
267 }
268
269 panic("Shouldn't get here!");
270 /* NOTREACHED*/
271 }
272
273
274 /*
275 * Start a kernel process. This is called after a fork() call in
276 * main() in the file kern/init_main.c.
277 *
278 * This function is used to start "internal" daemons.
279 */
280 /* ARGSUSED*/
281 void
282 kproc_start(udata)
283 void *udata;
284 {
285 struct kproc_desc *kp = udata;
286 struct proc *p = curproc;
287
288 #ifdef DIAGNOSTIC
289 printf("Start pid=%d <%s>\n",p->p_pid, kp->arg0);
290 #endif
291
292 /* save a global descriptor, if desired*/
293 if( kp->global_procpp != NULL)
294 *kp->global_procpp = p;
295
296 /* this is a non-swapped system process*/
297 p->p_flag |= P_INMEM | P_SYSTEM;
298
299 /* set up arg0 for 'ps', et al*/
300 strcpy( p->p_comm, kp->arg0);
301
302 /* call the processes' main()...*/
303 (*kp->func)();
304
305 /* NOTREACHED */
306 panic("kproc_start: %s", kp->arg0);
307 }
308
309
310 /*
311 ***************************************************************************
312 ****
313 **** The following SYSINIT's belong elsewhere, but have not yet
314 **** been moved.
315 ****
316 ***************************************************************************
317 */
318 #ifdef OMIT
319 /*
320 * Handled by vfs_mountroot (bad idea) at this time... should be
321 * done the same as 4.4Lite2.
322 */
323 SYSINIT(swapinit, SI_SUB_SWAP, SI_ORDER_FIRST, swapinit, NULL)
324 #endif /* OMIT*/
325
326 static void print_caddr_t __P((void *data));
327 static void
328 print_caddr_t(data)
329 void *data;
330 {
331 printf("%s", (char *)data);
332 }
333 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright)
334
335
336 /*
337 ***************************************************************************
338 ****
339 **** The two following SYSINT's are proc0 specific glue code. I am not
340 **** convinced that they can not be safely combined, but their order of
341 **** operation has been maintained as the same as the original init_main.c
342 **** for right now.
343 ****
344 **** These probably belong in init_proc.c or kern_proc.c, since they
345 **** deal with proc0 (the fork template process).
346 ****
347 ***************************************************************************
348 */
349 /* ARGSUSED*/
350 static void proc0_init __P((void *dummy));
351 static void
352 proc0_init(dummy)
353 void *dummy;
354 {
355 register struct proc *p;
356 register struct filedesc0 *fdp;
357 register unsigned i;
358
359 /*
360 * Initialize the current process pointer (curproc) before
361 * any possible traps/probes to simplify trap processing.
362 */
363 p = &proc0;
364 curproc = p; /* XXX redundant*/
365
366 /*
367 * Initialize process and pgrp structures.
368 */
369 procinit();
370
371 /*
372 * Initialize sleep queue hash table
373 */
374 sleepinit();
375
376 /*
377 * additional VM structures
378 */
379 vm_init2();
380
381 /*
382 * Create process 0 (the swapper).
383 */
384 LIST_INSERT_HEAD(&allproc, p, p_list);
385 p->p_pgrp = &pgrp0;
386 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
387 LIST_INIT(&pgrp0.pg_members);
388 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
389
390 pgrp0.pg_session = &session0;
391 session0.s_count = 1;
392 session0.s_leader = p;
393
394 p->p_sysent = &aout_sysvec;
395
396 p->p_flag = P_INMEM | P_SYSTEM;
397 p->p_stat = SRUN;
398 p->p_nice = NZERO;
399 p->p_rtprio.type = RTP_PRIO_NORMAL;
400 p->p_rtprio.prio = 0;
401
402 /*
403 * Link for kernel based threads
404 */
405 p->p_peers = 0;
406 p->p_leader = p;
407
408 bcopy("swapper", p->p_comm, sizeof ("swapper"));
409
410 /* Create credentials. */
411 cred0.p_refcnt = 1;
412 p->p_cred = &cred0;
413 p->p_ucred = crget();
414 p->p_ucred->cr_ngroups = 1; /* group 0 */
415
416 /* Create procsig. */
417 p->p_procsig = &procsig0;
418 p->p_procsig->ps_refcnt = 2;
419
420 /* Create the file descriptor table. */
421 fdp = &filedesc0;
422 p->p_fd = &fdp->fd_fd;
423 fdp->fd_fd.fd_refcnt = 1;
424 fdp->fd_fd.fd_cmask = cmask;
425 fdp->fd_fd.fd_ofiles = fdp->fd_dfiles;
426 fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags;
427 fdp->fd_fd.fd_nfiles = NDFILE;
428
429 /* Create the limits structures. */
430 p->p_limit = &limit0;
431 for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
432 limit0.pl_rlimit[i].rlim_cur =
433 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
434 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur =
435 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
436 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur =
437 limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
438 i = ptoa(cnt.v_free_count);
439 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = i;
440 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = i;
441 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = i / 3;
442 limit0.p_cpulimit = RLIM_INFINITY;
443 limit0.p_refcnt = 1;
444
445
446 /* Allocate a prototype map so we have something to fork. */
447 pmap_pinit0(&vmspace0.vm_pmap);
448 p->p_vmspace = &vmspace0;
449 vmspace0.vm_refcnt = 1;
450 vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS),
451 trunc_page(VM_MAXUSER_ADDRESS));
452 vmspace0.vm_map.pmap = &vmspace0.vm_pmap;
453 p->p_addr = proc0paddr; /* XXX */
454
455 #ifndef __alpha__ /* XXX what is this? */
456 #define INCOMPAT_LITES2
457 #ifdef INCOMPAT_LITES2
458 /*
459 * proc0 needs to have a coherent frame base in its stack.
460 */
461 cpu_set_init_frame(p, init_framep); /* XXX! */
462 #endif /* INCOMPAT_LITES2*/
463 #endif
464
465 /*
466 * We continue to place resource usage info and signal
467 * actions in the user struct so they're pageable.
468 */
469 p->p_stats = &p->p_addr->u_stats;
470 p->p_sigacts = &p->p_addr->u_sigacts;
471
472 /*
473 * Charge root for one process.
474 */
475 (void)chgproccnt(0, 1);
476
477 /*
478 * Initialize the procfs flags (to 0, of course)
479 */
480 p->p_stops = p->p_stype = p->p_step = 0;
481
482 }
483 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL)
484
485 /* ARGSUSED*/
486 static void proc0_post __P((void *dummy));
487 static void
488 proc0_post(dummy)
489 void *dummy;
490 {
491 struct timespec ts;
492
493 /*
494 * Now we can look at the time, having had a chance to verify the
495 * time from the file system. Pretend that proc0 started now.
496 */
497 microtime(&proc0.p_stats->p_start);
498 proc0.p_runtime = 0;
499 microuptime(&proc0.p_switchtime);
500 switchticks = ticks;
501
502 /*
503 * Give the ``random'' number generator a thump.
504 * XXX: Does read_random() contain enough bits to be used here ?
505 */
506 nanotime(&ts);
507 srandom(ts.tv_sec ^ ts.tv_nsec);
508
509 /* Initialize signal state for process 0. */
510 siginit(&proc0);
511 }
512 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL)
513
514
515
516
517 /*
518 ***************************************************************************
519 ****
520 **** The following SYSINIT's and glue code should be moved to the
521 **** respective files on a per subsystem basis.
522 ****
523 ***************************************************************************
524 */
525
526 /* ARGSUSED */
527 static void root_conf __P((void *dummy));
528 static void
529 root_conf(dummy)
530 void *dummy;
531 {
532 cpu_rootconf();
533 }
534 SYSINIT(root_conf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, root_conf, NULL)
535
536 /* ARGSUSED*/
537 static void xxx_vfs_root_fdtab __P((void *dummy));
538 static void
539 xxx_vfs_root_fdtab(dummy)
540 void *dummy;
541 {
542 register struct filedesc0 *fdp = &filedesc0;
543
544 /* Get the vnode for '/'. Set fdp->fd_fd.fd_cdir to reference it. */
545 if (VFS_ROOT(mountlist.cqh_first, &rootvnode))
546 panic("cannot find root vnode");
547 fdp->fd_fd.fd_cdir = rootvnode;
548 VREF(fdp->fd_fd.fd_cdir);
549 VOP_UNLOCK(rootvnode, 0, &proc0);
550 fdp->fd_fd.fd_rdir = rootvnode;
551 }
552 SYSINIT(retrofit, SI_SUB_ROOT_FDTAB, SI_ORDER_FIRST, xxx_vfs_root_fdtab, NULL)
553
554
555 /*
556 ***************************************************************************
557 ****
558 **** The following code probably belongs in another file, like
559 **** kern/init_init.c. It is here for two reasons only:
560 ****
561 **** 1) This code returns to startup the system; this is
562 **** abnormal for a kernel thread.
563 **** 2) This code promiscuously uses init_frame
564 ****
565 ***************************************************************************
566 */
567
568 static void kthread_init __P((void *dummy));
569 SYSINIT_KP(init,SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kthread_init, NULL)
570
571
572 extern void prepare_usermode __P((void));
573 static void start_init __P((struct proc *p));
574
575 /* ARGSUSED*/
576 static void
577 kthread_init(dummy)
578 void *dummy;
579 {
580 /* Create process 1 (init(8)). */
581 start_init(curproc);
582
583 prepare_usermode();
584
585 /*
586 * This returns to the fork trampoline, then to user mode.
587 */
588 return;
589 }
590
591
592 /*
593 * List of paths to try when searching for "init".
594 */
595 static char init_path[MAXPATHLEN] =
596 #ifdef INIT_PATH
597 __XSTRING(INIT_PATH);
598 #else
599 "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall";
600 #endif
601 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, "");
602
603 /*
604 * Start the initial user process; try exec'ing each pathname in init_path.
605 * The program is invoked with one argument containing the boot flags.
606 */
607 static void
608 start_init(p)
609 struct proc *p;
610 {
611 vm_offset_t addr;
612 struct execve_args args;
613 int options, error;
614 char *var, *path, *next, *s;
615 char *ucp, **uap, *arg0, *arg1;
616
617 initproc = p;
618
619 /*
620 * Need just enough stack to hold the faked-up "execve()" arguments.
621 */
622 addr = trunc_page(USRSTACK - PAGE_SIZE);
623 if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE,
624 FALSE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0)
625 panic("init: couldn't allocate argument space");
626 p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
627 p->p_vmspace->vm_ssize = 1;
628
629 if ((var = getenv("init_path")) != NULL) {
630 strncpy(init_path, var, sizeof init_path);
631 init_path[sizeof init_path - 1] = 0;
632 }
633
634 for (path = init_path; *path != '\0'; path = next) {
635 while (*path == ':')
636 path++;
637 if (*path == '\0')
638 break;
639 for (next = path; *next != '\0' && *next != ':'; next++)
640 /* nothing */ ;
641 if (bootverbose)
642 printf("start_init: trying %.*s\n", next-path, path);
643
644 /*
645 * Move out the boot flag argument.
646 */
647 options = 0;
648 ucp = (char *)USRSTACK;
649 (void)subyte(--ucp, 0); /* trailing zero */
650 if (boothowto & RB_SINGLE) {
651 (void)subyte(--ucp, 's');
652 options = 1;
653 }
654 #ifdef notyet
655 if (boothowto & RB_FASTBOOT) {
656 (void)subyte(--ucp, 'f');
657 options = 1;
658 }
659 #endif
660
661 #ifdef BOOTCDROM
662 (void)subyte(--ucp, 'C');
663 options = 1;
664 #endif
665 if (options == 0)
666 (void)subyte(--ucp, '-');
667 (void)subyte(--ucp, '-'); /* leading hyphen */
668 arg1 = ucp;
669
670 /*
671 * Move out the file name (also arg 0).
672 */
673 (void)subyte(--ucp, 0);
674 for (s = next - 1; s >= path; s--)
675 (void)subyte(--ucp, *s);
676 arg0 = ucp;
677
678 /*
679 * Move out the arg pointers.
680 */
681 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1));
682 (void)suword((caddr_t)--uap, (long)0); /* terminator */
683 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1);
684 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0);
685
686 /*
687 * Point at the arguments.
688 */
689 args.fname = arg0;
690 args.argv = uap;
691 args.envv = NULL;
692
693 /*
694 * Now try to exec the program. If can't for any reason
695 * other than it doesn't exist, complain.
696 *
697 * Otherwise return to main() which returns to btext
698 * which completes the system startup.
699 */
700 if ((error = execve(p, &args)) == 0)
701 return;
702 if (error != ENOENT)
703 printf("exec %.*s: error %d\n", next-path, path, error);
704 }
705 printf("init: not found\n");
706 panic("no init");
707 }
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