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init_main.c (12501) init_main.c (12569)
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

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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
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

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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 * $Id: init_main.c,v 1.31 1995/10/08 00:05:59 swallace Exp $
42 * $Id: init_main.c,v 1.32 1995/11/28 07:29:59 bde Exp $
43 */
44
45#include <sys/param.h>
46#include <sys/filedesc.h>
47#include <sys/errno.h>
48#include <sys/exec.h>
49#include <sys/kernel.h>
50#ifdef GPROF

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218 * Start a kernel process. This is called after a fork() call in
219 * main() in the file kern/init_main.c.
220 *
221 * This function is used to start "internal" daemons.
222 */
223/* ARGSUSED*/
224void
225kproc_start(udata)
43 */
44
45#include <sys/param.h>
46#include <sys/filedesc.h>
47#include <sys/errno.h>
48#include <sys/exec.h>
49#include <sys/kernel.h>
50#ifdef GPROF

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218 * Start a kernel process. This is called after a fork() call in
219 * main() in the file kern/init_main.c.
220 *
221 * This function is used to start "internal" daemons.
222 */
223/* ARGSUSED*/
224void
225kproc_start(udata)
226 void *udata; /* pointer to a 'kproc_desc' ? */
226 void *udata;
227{
227{
228 struct kproc_desc *kp = (struct kproc_desc *)udata;
228 struct kproc_desc *kp = udata;
229 struct proc *p = curproc;
230
231 /* save a global descriptor, if desired*/
232 if( kp->global_procpp != NULL)
233 *kp->global_procpp = p;
234
235 /* this is a non-swapped system process*/
236 p->p_flag |= P_INMEM | P_SYSTEM;
237
238 /* set up arg0 for 'ps', et al*/
239 strcpy( p->p_comm, kp->arg0);
240
241 /* call the processes' main()...*/
242 (*kp->func)();
243
244 /* NOTREACHED */
229 struct proc *p = curproc;
230
231 /* save a global descriptor, if desired*/
232 if( kp->global_procpp != NULL)
233 *kp->global_procpp = p;
234
235 /* this is a non-swapped system process*/
236 p->p_flag |= P_INMEM | P_SYSTEM;
237
238 /* set up arg0 for 'ps', et al*/
239 strcpy( p->p_comm, kp->arg0);
240
241 /* call the processes' main()...*/
242 (*kp->func)();
243
244 /* NOTREACHED */
245 panic( "kproc_start: %s", kp->arg0);
245 panic("kproc_start: %s", kp->arg0);
246}
247
248
249/*
250 ***************************************************************************
251 ****
252 **** The following SYSINIT's belong elsewhere, but have not yet
253 **** been moved.

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274#endif
275static void print_caddr_t __P((void *data));
276static void
277print_caddr_t(data)
278 void *data;
279{
280 printf("%s", (char *)data);
281}
246}
247
248
249/*
250 ***************************************************************************
251 ****
252 **** The following SYSINIT's belong elsewhere, but have not yet
253 **** been moved.

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274#endif
275static void print_caddr_t __P((void *data));
276static void
277print_caddr_t(data)
278 void *data;
279{
280 printf("%s", (char *)data);
281}
282SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,
283 copyright)
282SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright)
284
285
286/*
287 ***************************************************************************
288 ****
289 **** The two following SYSINT's are proc0 specific glue code. I am not
290 **** convinced that they can not be safely combined, but their order of
291 **** operation has been maintained as the same as the original init_main.c
292 **** for right now.
293 ****
294 **** These probably belong in init_proc.c or kern_proc.c, since they
295 **** deal with proc0 (the fork template process).
296 ****
297 ***************************************************************************
298 */
299/* ARGSUSED*/
283
284
285/*
286 ***************************************************************************
287 ****
288 **** The two following SYSINT's are proc0 specific glue code. I am not
289 **** convinced that they can not be safely combined, but their order of
290 **** operation has been maintained as the same as the original init_main.c
291 **** for right now.
292 ****
293 **** These probably belong in init_proc.c or kern_proc.c, since they
294 **** deal with proc0 (the fork template process).
295 ****
296 ***************************************************************************
297 */
298/* ARGSUSED*/
300void proc0_init __P((void *udata));
299void proc0_init __P((void *dummy));
301void
300void
302proc0_init(udata)
303 void *udata; /* not used*/
301proc0_init(dummy)
302 void *dummy;
304{
305 register struct proc *p;
306 register struct filedesc0 *fdp;
307 register int i;
308
309 /*
310 * Initialize the current process pointer (curproc) before
311 * any possible traps/probes to simplify trap processing.

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395 * root for one process.
396 */
397 usrinfoinit();
398 (void)chgproccnt(0, 1);
399}
400SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL)
401
402/* ARGSUSED*/
303{
304 register struct proc *p;
305 register struct filedesc0 *fdp;
306 register int i;
307
308 /*
309 * Initialize the current process pointer (curproc) before
310 * any possible traps/probes to simplify trap processing.

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394 * root for one process.
395 */
396 usrinfoinit();
397 (void)chgproccnt(0, 1);
398}
399SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL)
400
401/* ARGSUSED*/
403void proc0_post __P((void *udata));
402void proc0_post __P((void *dummy));
404void
403void
405proc0_post(udata)
406 void *udata; /* not used*/
404proc0_post(dummy)
405 void *dummy;
407{
408 /*
409 * Now can look at time, having had a chance to verify the time
410 * from the file system. Reset p->p_rtime as it may have been
411 * munched in mi_switch() after the time got set.
412 */
413 proc0.p_stats->p_start = runtime = mono_time = boottime = time;
414 proc0.p_rtime.tv_sec = proc0.p_rtime.tv_usec = 0;

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425 ***************************************************************************
426 ****
427 **** The following SYSINIT's and glue code should be moved to the
428 **** respective files on a per subsystem basis.
429 ****
430 ***************************************************************************
431 */
432/* ARGSUSED*/
406{
407 /*
408 * Now can look at time, having had a chance to verify the time
409 * from the file system. Reset p->p_rtime as it may have been
410 * munched in mi_switch() after the time got set.
411 */
412 proc0.p_stats->p_start = runtime = mono_time = boottime = time;
413 proc0.p_rtime.tv_sec = proc0.p_rtime.tv_usec = 0;

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424 ***************************************************************************
425 ****
426 **** The following SYSINIT's and glue code should be moved to the
427 **** respective files on a per subsystem basis.
428 ****
429 ***************************************************************************
430 */
431/* ARGSUSED*/
433void sched_setup __P((void *udata));
432void sched_setup __P((void *dummy));
434void
433void
435sched_setup(udata)
436 void *udata; /* not used*/
434sched_setup(dummy)
435 void *dummy;
437{
438 /* Kick off timeout driven events by calling first time. */
439 roundrobin(NULL);
440 schedcpu(NULL);
441}
442SYSINIT(sched_setup, SI_SUB_KICK_SCHEDULER, SI_ORDER_FIRST, sched_setup, NULL)
443
444/* ARGSUSED*/
436{
437 /* Kick off timeout driven events by calling first time. */
438 roundrobin(NULL);
439 schedcpu(NULL);
440}
441SYSINIT(sched_setup, SI_SUB_KICK_SCHEDULER, SI_ORDER_FIRST, sched_setup, NULL)
442
443/* ARGSUSED*/
445void xxx_vfs_mountroot __P((void *udata));
444void xxx_vfs_mountroot __P((void *dummy));
446void
445void
447xxx_vfs_mountroot(udata)
448 void *udata; /* not used*/
446xxx_vfs_mountroot(dummy)
447 void *dummy;
449{
450 /* Mount the root file system. */
451 if ((*mountroot)(mountrootvfsops))
452 panic("cannot mount root");
453}
454SYSINIT(mountroot, SI_SUB_ROOT, SI_ORDER_FIRST, xxx_vfs_mountroot, NULL)
455
456/* ARGSUSED*/
448{
449 /* Mount the root file system. */
450 if ((*mountroot)(mountrootvfsops))
451 panic("cannot mount root");
452}
453SYSINIT(mountroot, SI_SUB_ROOT, SI_ORDER_FIRST, xxx_vfs_mountroot, NULL)
454
455/* ARGSUSED*/
457void xxx_vfs_root_fdtab __P((void *udata));
456void xxx_vfs_root_fdtab __P((void *dummy));
458void
457void
459xxx_vfs_root_fdtab(udata)
460 void *udata; /* not used*/
458xxx_vfs_root_fdtab(dummy)
459 void *dummy;
461{
462 register struct filedesc0 *fdp = &filedesc0;
463
464 /* Get the vnode for '/'. Set fdp->fd_fd.fd_cdir to reference it. */
465 if (VFS_ROOT(mountlist.cqh_first, &rootvnode))
466 panic("cannot find root vnode");
467 fdp->fd_fd.fd_cdir = rootvnode;
468 VREF(fdp->fd_fd.fd_cdir);

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480 ****
481 **** 1) This code returns to startup the system; this is
482 **** abnormal for a kernel thread.
483 **** 2) This code promiscuously uses init_frame
484 ****
485 ***************************************************************************
486 */
487
460{
461 register struct filedesc0 *fdp = &filedesc0;
462
463 /* Get the vnode for '/'. Set fdp->fd_fd.fd_cdir to reference it. */
464 if (VFS_ROOT(mountlist.cqh_first, &rootvnode))
465 panic("cannot find root vnode");
466 fdp->fd_fd.fd_cdir = rootvnode;
467 VREF(fdp->fd_fd.fd_cdir);

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479 ****
480 **** 1) This code returns to startup the system; this is
481 **** abnormal for a kernel thread.
482 **** 2) This code promiscuously uses init_frame
483 ****
484 ***************************************************************************
485 */
486
488static void kthread_init __P((void *udata));
487static void kthread_init __P((void *dummy));
489SYSINIT_KT(init,SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kthread_init, NULL)
490
491
492static void start_init __P((struct proc *p, void *framep));
493
494/* ARGSUSED*/
495static void
488SYSINIT_KT(init,SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kthread_init, NULL)
489
490
491static void start_init __P((struct proc *p, void *framep));
492
493/* ARGSUSED*/
494static void
496kthread_init(udata)
497 void *udata; /* not used*/
495kthread_init(dummy)
496 void *dummy;
498{
499
500 /* Create process 1 (init(8)). */
501 start_init(curproc, init_framep);
502
503 /*
504 * This is the only kernel thread allowed to return yo the
505 * caller!!!

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498
499 /* Create process 1 (init(8)). */
500 start_init(curproc, init_framep);
501
502 /*
503 * This is the only kernel thread allowed to return yo the
504 * caller!!!

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