[unix-history] / sys / kern / init_main.c

/*
 * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)init_main.c	7.41 (Berkeley) 5/15/91
 *	$Id$
 */

#include "param.h"
#include "filedesc.h"
#include "kernel.h"
#include "mount.h"
#include "proc.h"
#include "resourcevar.h"
#include "signalvar.h"
#include "systm.h"
#include "vnode.h"
#include "conf.h"
#include "buf.h"
#include "malloc.h"
#include "protosw.h"
#include "reboot.h"
#include "user.h"
#include "utsname.h"

#include "ufs/quota.h"

#include "machine/cpu.h"

#include "vm/vm.h"

char	copyright[] =
"Copyright (c) 1989,1990,1991,1992 William F. Jolitz. All rights reserved.\n\
Copyright (c) 1982,1986,1989,1991 The Regents of the University\n\
of California.  All rights reserved.\n\n";

/* For uname() */
struct utsname utsname;

/*
 * Components of process 0;
 * never freed.
 */
struct	session session0;
struct	pgrp pgrp0;
struct	proc proc0;
struct	pcred cred0;
struct	filedesc0 filedesc0;
struct	plimit limit0;
struct	vmspace vmspace0;
struct	proc *curproc = &proc0;
struct	proc *initproc, *pageproc;

int	cmask = CMASK;
extern	struct user *proc0paddr;
extern	int (*mountroot)();

struct	vnode *rootvp, *swapdev_vp;
int	boothowto;

#if __GNUC__ >= 2
__main() {}
#endif

/*
 * System startup; initialize the world, create process 0,
 * mount root filesystem, and fork to create init and pagedaemon.
 * Most of the hard work is done in the lower-level initialization
 * routines including startup(), which does memory initialization
 * and autoconfiguration.
 */
main()
{
	register int i;
	register struct proc *p;
	register struct filedesc0 *fdp;
	int s, rval[2];
	char *cp;

	/*
	 * Initialize curproc before any possible traps/probes
	 * to simplify trap processing.
	 */
	p = &proc0;
	curproc = p;
	/*
	 * Attempt to find console and initialize
	 * in case of early panic or other messages.
	 */
	startrtclock();
	consinit();

	printf("%s", copyright);

	vm_mem_init();
	kmeminit();
	cpu_startup();

	/*
	 * set up system process 0 (swapper)
	 */
	p = &proc0;
	curproc = p;

	allproc = p;
	p->p_prev = &allproc;
	p->p_pgrp = &pgrp0;
	pgrphash[0] = &pgrp0;
	pgrp0.pg_mem = p;
	pgrp0.pg_session = &session0;
	session0.s_count = 1;
	session0.s_leader = p;

	p->p_flag = SLOAD|SSYS;
	p->p_stat = SRUN;
	p->p_nice = NZERO;
	bcopy("swapper", p->p_comm, sizeof ("swapper"));

	/*
	 * Setup credentials
	 */
	cred0.p_refcnt = 1;
	p->p_cred = &cred0;
	p->p_ucred = crget();
	p->p_ucred->cr_ngroups = 1;	/* group 0 */

	/*
	 * Create the file descriptor table for process 0.
	 */
	fdp = &filedesc0;
	p->p_fd = &fdp->fd_fd;
	fdp->fd_fd.fd_refcnt = 1;
	fdp->fd_fd.fd_cmask = cmask;
	fdp->fd_fd.fd_ofiles = fdp->fd_dfiles;
	fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags;
	fdp->fd_fd.fd_nfiles = NDFILE;

	/*
	 * Set initial limits
	 */
	p->p_limit = &limit0;
	for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
		limit0.pl_rlimit[i].rlim_cur =
		    limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
	limit0.pl_rlimit[RLIMIT_OFILE].rlim_cur = NOFILE;
	limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC;
	limit0.p_refcnt = 1;

	/*
	 * Allocate a prototype map so we have something to fork
	 */
	p->p_vmspace = &vmspace0;
	vmspace0.vm_refcnt = 1;
	pmap_pinit(&vmspace0.vm_pmap);
	vm_map_init(&p->p_vmspace->vm_map, round_page(VM_MIN_ADDRESS),
	    trunc_page(VM_MAX_ADDRESS), TRUE);
	vmspace0.vm_map.pmap = &vmspace0.vm_pmap;
	p->p_addr = proc0paddr;				/* XXX */

	/*
	 * We continue to place resource usage info
	 * and signal actions in the user struct so they're pageable.
	 */
	p->p_stats = &p->p_addr->u_stats;
	p->p_sigacts = &p->p_addr->u_sigacts;

	rqinit();

	/*
	 * configure virtual memory system,
	 * set vm rlimits
	 */
	vm_init_limits(p);

	/*
	 * Initialize the file systems.
	 *
	 * Get vnodes for swapdev and rootdev.
	 */
	vfsinit();
	if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp))
		panic("can't setup bdevvp's");

#if defined(vax)
#include "kg.h"
#if NKG > 0
	startkgclock();
#endif
#endif

	/*
	 * Initialize tables, protocols, and set up well-known inodes.
	 */
	mbinit();
#ifdef SYSVSHM
	shminit();
#endif
#include "sl.h"
#if NSL > 0
	slattach();			/* XXX */
#endif
#include "ppp.h"
#if NPPP > 0
	pppattach();			/* XXX */
#endif
#include "loop.h"
#if NLOOP > 0
	loattach();			/* XXX */
#endif
	/*
	 * Block reception of incoming packets
	 * until protocols have been initialized.
	 */
	s = splimp();
	ifinit();
	domaininit();
	splx(s);

#ifdef GPROF
	kmstartup();
#endif

	/* kick off timeout driven events by calling first time */
	roundrobin();
	schedcpu();
	enablertclock();		/* enable realtime clock interrupts */

	/*
	 * Set up the root file system and vnode.
	 */
	if ((*mountroot)())
		panic("cannot mount root");
	/*
	 * Get vnode for '/'.
	 * Setup rootdir and fdp->fd_fd.fd_cdir to point to it.
	 */
	if (VFS_ROOT(rootfs, &rootdir))
		panic("cannot find root vnode");
	fdp->fd_fd.fd_cdir = rootdir;
	VREF(fdp->fd_fd.fd_cdir);
	VOP_UNLOCK(rootdir);
	fdp->fd_fd.fd_rdir = NULL;
	swapinit();

	/*
	 * Now can look at time, having had a chance
	 * to verify the time from the file system.
	 */
	boottime = p->p_stats->p_start = time;

	/*
	 * Setup version number for uname syscall
	 * XXX probably should go elsewhere.
	 */
	bzero(utsname.sysname, sizeof(utsname.sysname));
	for (cp = version, i= 0;
	     *cp && *cp != ' ' && i <= sizeof(utsname.sysname);
	     )
	  utsname.sysname[i++] = *cp++;
	bzero(utsname.release, sizeof(utsname.release));
	for (cp++, i= 0; *cp && *cp != ' ' && i <= sizeof(utsname.release);)
	  utsname.release[i++] = *cp++;
	bzero(utsname.version, sizeof(utsname.version));
	for (; *cp != '('; cp++);
	for (cp++, i= 0; *cp && *cp != ')' && i <= sizeof(utsname.version);)
	  utsname.version[i++] = *cp++;
	for (; *cp != '#'; cp++);
	if(i <= sizeof(utsname.version))
	  utsname.version[i++] = '#';
	for (cp++; *cp && *cp != ':' && i <= sizeof(utsname.version);)
	  utsname.version[i++] = *cp++;
	strncpy(utsname.machine, MACHINE, sizeof(utsname.machine));
	utsname.machine[sizeof(utsname.machine)-1] = '\0';

	/*
	 * make init process
	 */
	siginit(p);
	if (fork(p, (void *) NULL, rval))
		panic("fork init");
	if (rval[1]) {
		static char initflags[] = "-sf";
		char *ip = initflags + 1;
		vm_offset_t addr = 0;
		extern int icode[];		/* user init code */
		extern int szicode;		/* size of icode */

		/*
		 * Now in process 1.  Set init flags into icode,
		 * get a minimal address space, copy out "icode",
		 * and return to it to do an exec of init.
		 */
		p = curproc;
		initproc = p;
		if (boothowto&RB_SINGLE)
			*ip++ = 's';
#ifdef notyet
		if (boothowto&RB_FASTBOOT)
			*ip++ = 'f';
#endif
		*ip++ = '\0';

		if (vm_allocate(&p->p_vmspace->vm_map, &addr,
		    round_page(szicode + sizeof(initflags)), FALSE) != 0 ||
		    addr != 0)
			panic("init: couldn't allocate at zero");

		/* need just enough stack to exec from */
		addr = trunc_page(USRSTACK - MAXSSIZ);
		if (vm_allocate(&p->p_vmspace->vm_map, &addr,
		    MAXSSIZ, FALSE) != KERN_SUCCESS)
			panic("vm_allocate init stack");
		p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
		p->p_vmspace->vm_ssize = 1;
		(void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
		(void) copyout(initflags, (caddr_t)szicode, sizeof(initflags));
		return;			/* returns to icode */
	}

	/*
	 * Start up pageout daemon (process 2).
	 */
	if (fork(p, (void *) NULL, rval))
		panic("fork pager");
	if (rval[1]) {
		/*
		 * Now in process 2.
		 */
		p = curproc;
		pageproc = p;
		p->p_flag |= SLOAD|SSYS;		/* XXX */
		bcopy("pagedaemon", curproc->p_comm, sizeof ("pagedaemon"));
		vm_pageout();
		/*NOTREACHED*/
	}

	/*
	 * enter scheduling loop
	 */
	sched();
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
d4d5cd13 RG	33	* from: @(#)init_main.c 7.41 (Berkeley) 5/15/91
d4d5cd13 RG	34	* $Id$
15637ed4	35	*/
15637ed4 RG	36
	37	#include "param.h"
	38	#include "filedesc.h"
	39	#include "kernel.h"
	40	#include "mount.h"
	41	#include "proc.h"
	42	#include "resourcevar.h"
	43	#include "signalvar.h"
	44	#include "systm.h"
	45	#include "vnode.h"
	46	#include "conf.h"
	47	#include "buf.h"
	48	#include "malloc.h"
	49	#include "protosw.h"
	50	#include "reboot.h"
	51	#include "user.h"
5da574a1	52	#include "utsname.h"
15637ed4 RG	53
	54	#include "ufs/quota.h"
	55
	56	#include "machine/cpu.h"
	57
	58	#include "vm/vm.h"
	59
29b4e64c	60	char copyright[] =
15637ed4	61	"Copyright (c) 1989,1990,1991,1992 William F. Jolitz. All rights reserved.\n\
29b4e64c NW	62	Copyright (c) 1982,1986,1989,1991 The Regents of the University\n\
29b4e64c NW	63	of California. All rights reserved.\n\n";
15637ed4	64
5da574a1 JH	65	/* For uname() */
	66	struct utsname utsname;
	67
15637ed4 RG	68	/*
	69	* Components of process 0;
	70	* never freed.
	71	*/
	72	struct session session0;
	73	struct pgrp pgrp0;
	74	struct proc proc0;
	75	struct pcred cred0;
	76	struct filedesc0 filedesc0;
	77	struct plimit limit0;
	78	struct vmspace vmspace0;
	79	struct proc *curproc = &proc0;
	80	struct proc initproc, pageproc;
	81
	82	int cmask = CMASK;
	83	extern struct user *proc0paddr;
	84	extern int (*mountroot)();
	85
	86	struct vnode rootvp, swapdev_vp;
	87	int boothowto;
	88
d4d5cd13 RG	89	#if __GNUC__ >= 2
	90	__main() {}
	91	#endif
	92
15637ed4 RG	93	/*
	94	* System startup; initialize the world, create process 0,
	95	* mount root filesystem, and fork to create init and pagedaemon.
	96	* Most of the hard work is done in the lower-level initialization
	97	* routines including startup(), which does memory initialization
	98	* and autoconfiguration.
	99	*/
	100	main()
	101	{
	102	register int i;
	103	register struct proc *p;
	104	register struct filedesc0 *fdp;
	105	int s, rval[2];
5da574a1	106	char *cp;
15637ed4 RG	107
	108	/*
	109	* Initialize curproc before any possible traps/probes
	110	* to simplify trap processing.
	111	*/
	112	p = &proc0;
	113	curproc = p;
	114	/*
	115	* Attempt to find console and initialize
	116	* in case of early panic or other messages.
	117	*/
	118	startrtclock();
	119	consinit();
	120
29b4e64c	121	printf("%s", copyright);
15637ed4 RG	122
	123	vm_mem_init();
	124	kmeminit();
	125	cpu_startup();
	126
	127	/*
	128	* set up system process 0 (swapper)
	129	*/
	130	p = &proc0;
	131	curproc = p;
	132
	133	allproc = p;
	134	p->p_prev = &allproc;
	135	p->p_pgrp = &pgrp0;
	136	pgrphash[0] = &pgrp0;
	137	pgrp0.pg_mem = p;
	138	pgrp0.pg_session = &session0;
	139	session0.s_count = 1;
	140	session0.s_leader = p;
	141
	142	p->p_flag = SLOAD\|SSYS;
	143	p->p_stat = SRUN;
	144	p->p_nice = NZERO;
	145	bcopy("swapper", p->p_comm, sizeof ("swapper"));
	146
	147	/*
	148	* Setup credentials
	149	*/
	150	cred0.p_refcnt = 1;
	151	p->p_cred = &cred0;
	152	p->p_ucred = crget();
	153	p->p_ucred->cr_ngroups = 1; /* group 0 */
	154
	155	/*
	156	* Create the file descriptor table for process 0.
	157	*/
	158	fdp = &filedesc0;
	159	p->p_fd = &fdp->fd_fd;
	160	fdp->fd_fd.fd_refcnt = 1;
	161	fdp->fd_fd.fd_cmask = cmask;
	162	fdp->fd_fd.fd_ofiles = fdp->fd_dfiles;
	163	fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags;
	164	fdp->fd_fd.fd_nfiles = NDFILE;
	165
	166	/*
	167	* Set initial limits
	168	*/
	169	p->p_limit = &limit0;
	170	for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
	171	limit0.pl_rlimit[i].rlim_cur =
	172	limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
	173	limit0.pl_rlimit[RLIMIT_OFILE].rlim_cur = NOFILE;
	174	limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC;
	175	limit0.p_refcnt = 1;
	176
	177	/*
	178	* Allocate a prototype map so we have something to fork
	179	*/
	180	p->p_vmspace = &vmspace0;
	181	vmspace0.vm_refcnt = 1;
	182	pmap_pinit(&vmspace0.vm_pmap);
	183	vm_map_init(&p->p_vmspace->vm_map, round_page(VM_MIN_ADDRESS),
	184	trunc_page(VM_MAX_ADDRESS), TRUE);
	185	vmspace0.vm_map.pmap = &vmspace0.vm_pmap;
186	p->p_addr = proc0paddr; /* XXX */
187
188	/*
189	* We continue to place resource usage info
190	* and signal actions in the user struct so they're pageable.
191	*/
192	p->p_stats = &p->p_addr->u_stats;
193	p->p_sigacts = &p->p_addr->u_sigacts;
194
195	rqinit();
196
197	/*
198	* configure virtual memory system,
199	* set vm rlimits
200	*/
201	vm_init_limits(p);
202
203	/*
204	* Initialize the file systems.
205	*
206	* Get vnodes for swapdev and rootdev.
207	*/
208	vfsinit();
209	if (bdevvp(swapdev, &swapdev_vp) \|\| bdevvp(rootdev, &rootvp))
210	panic("can't setup bdevvp's");
211
212	#if defined(vax)
213	#include "kg.h"
214	#if NKG > 0
215	startkgclock();
216	#endif
217	#endif
218
219	/*
220	* Initialize tables, protocols, and set up well-known inodes.
221	*/
222	mbinit();
223	#ifdef SYSVSHM
224	shminit();
225	#endif
226	#include "sl.h"
227	#if NSL > 0
228	slattach(); /* XXX */
229	#endif
8b3438a6 RG	230	#include "ppp.h"
	231	#if NPPP > 0
	232	pppattach(); /* XXX */
	233	#endif
15637ed4 RG	234	#include "loop.h"
	235	#if NLOOP > 0
	236	loattach(); /* XXX */
	237	#endif
	238	/*
	239	* Block reception of incoming packets
	240	* until protocols have been initialized.
	241	*/
	242	s = splimp();
	243	ifinit();
	244	domaininit();
	245	splx(s);
	246
	247	#ifdef GPROF
	248	kmstartup();
	249	#endif
	250
	251	/* kick off timeout driven events by calling first time */
	252	roundrobin();
	253	schedcpu();
	254	enablertclock(); /* enable realtime clock interrupts */
	255
	256	/*
	257	* Set up the root file system and vnode.
	258	*/
	259	if ((*mountroot)())
	260	panic("cannot mount root");
	261	/*
	262	* Get vnode for '/'.
	263	* Setup rootdir and fdp->fd_fd.fd_cdir to point to it.
	264	*/
	265	if (VFS_ROOT(rootfs, &rootdir))
	266	panic("cannot find root vnode");
	267	fdp->fd_fd.fd_cdir = rootdir;
	268	VREF(fdp->fd_fd.fd_cdir);
	269	VOP_UNLOCK(rootdir);
	270	fdp->fd_fd.fd_rdir = NULL;
	271	swapinit();
	272
	273	/*
	274	* Now can look at time, having had a chance
	275	* to verify the time from the file system.
	276	*/
	277	boottime = p->p_stats->p_start = time;
	278
5da574a1 JH	279	/*
	280	* Setup version number for uname syscall
	281	* XXX probably should go elsewhere.
	282	*/
	283	bzero(utsname.sysname, sizeof(utsname.sysname));
	284	for (cp = version, i= 0;
	285	cp && cp != ' ' && i <= sizeof(utsname.sysname);
	286	)
	287	utsname.sysname[i++] = *cp++;
	288	bzero(utsname.release, sizeof(utsname.release));
	289	for (cp++, i= 0; cp && cp != ' ' && i <= sizeof(utsname.release);)
	290	utsname.release[i++] = *cp++;
	291	bzero(utsname.version, sizeof(utsname.version));
	292	for (; *cp != '('; cp++);
	293	for (cp++, i= 0; cp && cp != ')' && i <= sizeof(utsname.version);)
	294	utsname.version[i++] = *cp++;
	295	for (; *cp != '#'; cp++);
	296	if(i <= sizeof(utsname.version))
	297	utsname.version[i++] = '#';
	298	for (cp++; cp && cp != ':' && i <= sizeof(utsname.version);)
	299	utsname.version[i++] = *cp++;
	300	strncpy(utsname.machine, MACHINE, sizeof(utsname.machine));
	301	utsname.machine[sizeof(utsname.machine)-1] = '\0';
	302
15637ed4 RG	303	/*
	304	* make init process
	305	*/
	306	siginit(p);
	307	if (fork(p, (void *) NULL, rval))
	308	panic("fork init");
	309	if (rval[1]) {
	310	static char initflags[] = "-sf";
	311	char *ip = initflags + 1;
	312	vm_offset_t addr = 0;
	313	extern int icode[]; /* user init code */
	314	extern int szicode; /* size of icode */
	315
	316	/*
	317	* Now in process 1. Set init flags into icode,
	318	* get a minimal address space, copy out "icode",
	319	* and return to it to do an exec of init.
	320	*/
	321	p = curproc;
	322	initproc = p;
	323	if (boothowto&RB_SINGLE)
	324	*ip++ = 's';
	325	#ifdef notyet
	326	if (boothowto&RB_FASTBOOT)
	327	*ip++ = 'f';
	328	#endif
	329	*ip++ = '\0';
	330
	331	if (vm_allocate(&p->p_vmspace->vm_map, &addr,
	332	round_page(szicode + sizeof(initflags)), FALSE) != 0 \|\|
	333	addr != 0)
	334	panic("init: couldn't allocate at zero");
	335
	336	/* need just enough stack to exec from */
	337	addr = trunc_page(USRSTACK - MAXSSIZ);
	338	if (vm_allocate(&p->p_vmspace->vm_map, &addr,
	339	MAXSSIZ, FALSE) != KERN_SUCCESS)
	340	panic("vm_allocate init stack");
	341	p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
	342	p->p_vmspace->vm_ssize = 1;
	343	(void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
	344	(void) copyout(initflags, (caddr_t)szicode, sizeof(initflags));
	345	return; /* returns to icode */
	346	}
	347
	348	/*
	349	* Start up pageout daemon (process 2).
	350	*/
	351	if (fork(p, (void *) NULL, rval))
	352	panic("fork pager");
	353	if (rval[1]) {
	354	/*
	355	* Now in process 2.
	356	*/
	357	p = curproc;
	358	pageproc = p;
	359	p->p_flag \|= SLOAD\|SSYS; /* XXX */
	360	bcopy("pagedaemon", curproc->p_comm, sizeof ("pagedaemon"));
	361	vm_pageout();
	362	/NOTREACHED/
	363	}
	364
	365	/*
	366	* enter scheduling loop
367	*/
368	sched();
369	}