Berkeley copyright

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

diff --git a/usr/src/sys/kern/init_main.c b/usr/src/sys/kern/init_main.c
index 52bc79b..286ff79 100644 (file)
--- a/usr/src/sys/kern/init_main.c
+++ b/usr/src/sys/kern/init_main.c
@@ -1,32 +1,38 @@
-/*     init_main.c     4.49    83/04/04        */
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *     @(#)init_main.c 7.7 (Berkeley) %G%
+ */

 
 #include "../machine/pte.h"
 
 
 #include "../machine/pte.h"
 

-#include "../h/param.h"
-#include "../h/systm.h"
-#include "../h/dir.h"
-#include "../h/user.h"
-#include "../h/kernel.h"
-#include "../h/fs.h"
-#include "../h/mount.h"
-#include "../h/map.h"
-#include "../h/proc.h"
-#include "../h/inode.h"
-#include "../h/seg.h"
-#include "../h/conf.h"
-#include "../h/buf.h"
-#include "../h/vm.h"
-#include "../h/cmap.h"
-#include "../h/text.h"
-#include "../h/clist.h"
-#ifdef INET
-#include "../h/protosw.h"
-#endif
-#include "../h/quota.h"
+#include "param.h"
+#include "systm.h"
+#include "dir.h"
+#include "user.h"
+#include "kernel.h"
+#include "fs.h"
+#include "mount.h"
+#include "map.h"
+#include "proc.h"
+#include "inode.h"
+#include "seg.h"
+#include "conf.h"
+#include "buf.h"
+#include "vm.h"
+#include "cmap.h"
+#include "text.h"
+#include "clist.h"
+#include "malloc.h"
+#include "protosw.h"
+#include "quota.h"
+#include "reboot.h"

 #include "../machine/reg.h"
 #include "../machine/cpu.h"
 
 #include "../machine/reg.h"
 #include "../machine/cpu.h"
 

-extern struct user u;          /* have to declare it somewhere! */
+int    cmask = CMASK;

 /*
  * Initialization code.
  * Called from cold start routine as
 /*
  * Initialization code.
  * Called from cold start routine as


@@ -38,34 +44,21 @@ extern      struct user u;          /* have to declare it somewhere! */
  *     hand craft 0th process
  *     call all initialization routines
  *     fork - process 0 to schedule
  *     hand craft 0th process
  *     call all initialization routines
  *     fork - process 0 to schedule

- *          - process 2 to page out

  *          - process 1 execute bootstrap
  *          - process 1 execute bootstrap

- *
- * loop at loc 13 (0xd) in user mode -- /etc/init
- *     cannot be executed.
+ *          - process 2 to page out

  */
  */

-#ifdef vax

 main(firstaddr)
        int firstaddr;
 main(firstaddr)
        int firstaddr;

-#endif
-#ifdef sun
-main(regs)
-       struct regs regs;
-#endif

 {
        register int i;
        register struct proc *p;
 {
        register int i;
        register struct proc *p;

+       register struct pgrp *pg;

        struct fs *fs;
        int s;
 
        rqinit();
 #include "loop.h"
        struct fs *fs;
        int s;
 
        rqinit();
 #include "loop.h"

-#ifdef vax

        startup(firstaddr);
        startup(firstaddr);

-#endif
-#ifdef sun
-       startup();
-#endif

 
        /*
         * set up system process 0 (swapper)
 
        /*
         * set up system process 0 (swapper)


@@ -79,35 +72,65 @@ main(regs)
        p->p_nice = NZERO;
        setredzone(p->p_addr, (caddr_t)&u);
        u.u_procp = p;
        p->p_nice = NZERO;
        setredzone(p->p_addr, (caddr_t)&u);
        u.u_procp = p;

-#ifdef sun
-       u.u_ar0 = &regs.r_r0;
-#endif
-       u.u_cmask = CMASK;
+       MALLOC(pgrphash[0], struct pgrp *, sizeof (struct pgrp), 
+               M_PGRP, M_NOWAIT);
+       if ((pg = pgrphash[0]) == NULL)
+               panic("no space to craft zero'th process group");
+       pg->pg_id = 0;
+       pg->pg_hforw = 0;
+       pg->pg_mem = p;
+       pg->pg_jobc = 0;
+       p->p_pgrp = pg;
+       p->p_pgrpnxt = 0;
+       MALLOC(pg->pg_session, struct session *, sizeof (struct session),
+               M_SESSION, M_NOWAIT);
+       if (pg->pg_session == NULL)
+               panic("no space to craft zero'th session");
+       pg->pg_session->s_count = 1;
+       pg->pg_session->s_leader = 0;
+       /*
+        * These assume that the u. area is always mapped 
+        * to the same virtual address. Otherwise must be
+        * handled when copying the u. area in newproc().
+        */
+       u.u_nd.ni_iov = &u.u_nd.ni_iovec;
+       u.u_ap = u.u_arg;
+       u.u_nd.ni_iovcnt = 1;
+
+       u.u_cmask = cmask;
+       u.u_lastfile = -1;

        for (i = 1; i < NGROUPS; i++)
                u.u_groups[i] = NOGROUP;
        for (i = 0; i < sizeof(u.u_rlimit)/sizeof(u.u_rlimit[0]); i++)
                u.u_rlimit[i].rlim_cur = u.u_rlimit[i].rlim_max = 
                    RLIM_INFINITY;
        for (i = 1; i < NGROUPS; i++)
                u.u_groups[i] = NOGROUP;
        for (i = 0; i < sizeof(u.u_rlimit)/sizeof(u.u_rlimit[0]); i++)
                u.u_rlimit[i].rlim_cur = u.u_rlimit[i].rlim_max = 
                    RLIM_INFINITY;

-       u.u_rlimit[RLIMIT_STACK].rlim_cur = 512*1024;
-       u.u_rlimit[RLIMIT_STACK].rlim_max = ctob(MAXDSIZ);
-       u.u_rlimit[RLIMIT_DATA].rlim_max =
-           u.u_rlimit[RLIMIT_DATA].rlim_cur = ctob(MAXDSIZ);
-       p->p_maxrss = RLIM_INFINITY/NBPG;
-#ifdef QUOTA
+       /*
+        * configure virtual memory system,
+        * set vm rlimits
+        */
+       vminit();
+
+#if defined(QUOTA)

        qtinit();
        p->p_quota = u.u_quota = getquota(0, 0, Q_NDQ);
 #endif
        startrtclock();
        qtinit();
        p->p_quota = u.u_quota = getquota(0, 0, Q_NDQ);
 #endif
        startrtclock();

-#ifdef KGCLOCK
+#if defined(vax)
+#include "kg.h"
+#if NKG > 0

        startkgclock();
        startkgclock();

+#endif

 #endif
 
        /*
         * Initialize tables, protocols, and set up well-known inodes.
         */
        mbinit();
 #endif
 
        /*
         * Initialize tables, protocols, and set up well-known inodes.
         */
        mbinit();

-       cinit();                        /* needed by dmc-11 driver */
-#ifdef INET
+       cinit();
+#include "sl.h"
+#if NSL > 0
+       slattach();                     /* XXX */
+#endif

 #if NLOOP > 0
        loattach();                     /* XXX */
 #endif
 #if NLOOP > 0
        loattach();                     /* XXX */
 #endif


@@ -117,20 +140,18 @@ main(regs)
         */
        s = splimp();
        ifinit();
         */
        s = splimp();
        ifinit();

-#endif

        domaininit();
        domaininit();

-#ifdef INET

        splx(s);
        splx(s);

-#endif
+       pqinit();
+       xinit();

        ihinit();
        ihinit();

-       bhinit();
-       binit();
-       bswinit();
+       swapinit();
+       nchinit();

 #ifdef GPROF
        kmstartup();
 #endif
 
 #ifdef GPROF
        kmstartup();
 #endif
 

-       fs = mountfs(rootdev, 0, (struct inode *)0);
+       fs = mountfs(rootdev, boothowto & RB_RDONLY, (struct inode *)0);

        if (fs == 0)
                panic("iinit");
        bcopy("/", fs->fs_fsmnt, 2);
        if (fs == 0)
                panic("iinit");
        bcopy("/", fs->fs_fsmnt, 2);


@@ -153,20 +174,29 @@ main(regs)
        u.u_dmap = zdmap;
        u.u_smap = zdmap;
 
        u.u_dmap = zdmap;
        u.u_smap = zdmap;
 

+       enablertclock();                /* enable realtime clock interrupts */

        /*
        /*

-        * Set the scan rate and other parameters of the paging subsystem.
+        * make init process

         */
         */

-       setupclock();

 
 

+       proc[0].p_szpt = CLSIZE;
+       if (newproc(0)) {
+               expand(clrnd((int)btoc(szicode)), 0);
+               (void) swpexpand(u.u_dsize, (size_t)0, &u.u_dmap, &u.u_smap);
+               (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
+               /*
+                * Return goes to loc. 0 of user init
+                * code just copied out.
+                */
+               return;
+       }

        /*
         * make page-out daemon (process 2)
         * the daemon has ctopt(nswbuf*CLSIZE*KLMAX) pages of page
         * table so that it can map dirty pages into
         * its address space during asychronous pushes.
         */
        /*
         * make page-out daemon (process 2)
         * the daemon has ctopt(nswbuf*CLSIZE*KLMAX) pages of page
         * table so that it can map dirty pages into
         * its address space during asychronous pushes.
         */

-       mpid = 1;

        proc[0].p_szpt = clrnd(ctopt(nswbuf*CLSIZE*KLMAX + UPAGES));
        proc[0].p_szpt = clrnd(ctopt(nswbuf*CLSIZE*KLMAX + UPAGES));

-       proc[1].p_stat = SZOMB;         /* force it to be in proc slot 2 */

        if (newproc(0)) {
                proc[2].p_flag |= SLOAD|SSYS;
                proc[2].p_dsize = u.u_dsize = nswbuf*CLSIZE*KLMAX; 
        if (newproc(0)) {
                proc[2].p_flag |= SLOAD|SSYS;
                proc[2].p_dsize = u.u_dsize = nswbuf*CLSIZE*KLMAX; 


@@ -175,48 +205,8 @@ main(regs)
        }
 
        /*
        }
 
        /*

-        * make init process and

         * enter scheduling loop
         */
         * enter scheduling loop
         */

-
-       mpid = 0;
-       proc[1].p_stat = 0;
-       proc[0].p_szpt = CLSIZE;
-       if (newproc(0)) {
-#ifdef vax
-               expand(clrnd((int)btoc(szicode)), 0);
-               (void) swpexpand(u.u_dsize, 0, &u.u_dmap, &u.u_smap);
-               (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
-#endif
-#ifdef sun
-               icode();
-               usetup();
-               regs.r_context = u.u_pcb.pcb_ctx->ctx_context;
-#endif
-               /*
-                * Return goes to loc. 0 of user init
-                * code just copied out.
-                */
-               return;
-       }
-#ifdef MUSH
-       /*
-        * start MUSH daemon
-        *                      pid == 3
-        */
-       if (newproc(0)) {
-#ifdef vax
-               expand(clrnd((int)btoc(szmcode)), 0);
-               (void) swpexpand(u.u_dsize, 0, &u.u_dmap, &u.u_smap);
-               (void) copyout((caddr_t)mcode, (caddr_t)0, (unsigned)szmcode);
-               /*
-                * Return goes to loc. 0 of user mush
-                * code just copied out.
-                */
-               return;
-#endif
-       }
-#endif

        proc[0].p_szpt = 1;
        sched();
 }
        proc[0].p_szpt = 1;
        sched();
 }


@@ -241,7 +231,6 @@ binit()
 {
        register struct buf *bp, *dp;
        register int i;
 {
        register struct buf *bp, *dp;
        register int i;

-       struct swdevt *swp;

        int base, residual;
 
        for (dp = bfreelist; dp < &bfreelist[BQUEUES]; dp++) {
        int base, residual;
 
        for (dp = bfreelist; dp < &bfreelist[BQUEUES]; dp++) {


@@ -254,49 +243,62 @@ binit()
                bp = &buf[i];
                bp->b_dev = NODEV;
                bp->b_bcount = 0;
                bp = &buf[i];
                bp->b_dev = NODEV;
                bp->b_bcount = 0;

-#ifndef sun

                bp->b_un.b_addr = buffers + i * MAXBSIZE;
                if (i < residual)
                        bp->b_bufsize = (base + 1) * CLBYTES;
                else
                        bp->b_bufsize = base * CLBYTES;
                binshash(bp, &bfreelist[BQ_AGE]);
                bp->b_un.b_addr = buffers + i * MAXBSIZE;
                if (i < residual)
                        bp->b_bufsize = (base + 1) * CLBYTES;
                else
                        bp->b_bufsize = base * CLBYTES;
                binshash(bp, &bfreelist[BQ_AGE]);

-#else
-               bp->b_un.b_addr = (char *)0;
-               bp->b_bufsize = 0;
-               binshash(bp, &bfreelist[BQ_EMPTY]);
-#endif

                bp->b_flags = B_BUSY|B_INVAL;
                brelse(bp);
        }
                bp->b_flags = B_BUSY|B_INVAL;
                brelse(bp);
        }

-       /*
-        * Count swap devices, and adjust total swap space available.
-        * Some of this space will not be available until a vswapon()
-        * system is issued, usually when the system goes multi-user.
-        */
-       nswdev = 0;
-       for (swp = swdevt; swp->sw_dev; swp++)
-               nswdev++;
-       if (nswdev == 0)
-               panic("binit");
-       if (nswdev > 1)
-               nswap = (nswap/DMMAX)*DMMAX;
-       nswap *= nswdev;
-       maxpgio *= nswdev;
-       swfree(0);

 }
 
 /*
 }
 
 /*

+ * Set up swap devices.

  * Initialize linked list of free swap
  * headers. These do not actually point
  * to buffers, but rather to pages that
  * are being swapped in and out.
  */
  * Initialize linked list of free swap
  * headers. These do not actually point
  * to buffers, but rather to pages that
  * are being swapped in and out.
  */

-bswinit()
+swapinit()

 {
        register int i;
        register struct buf *sp = swbuf;
 {
        register int i;
        register struct buf *sp = swbuf;

+       struct swdevt *swp;
+       int error;

 
 

+       /*
+        * Count swap devices, and adjust total swap space available.
+        * Some of this space will not be available until a swapon()
+        * system is issued, usually when the system goes multi-user.
+        */
+       nswdev = 0;
+       nswap = 0;
+       for (swp = swdevt; swp->sw_dev; swp++) {
+               nswdev++;
+               if (swp->sw_nblks > nswap)
+                       nswap = swp->sw_nblks;
+       }
+       if (nswdev == 0)
+               panic("swapinit");
+       if (nswdev > 1)
+               nswap = ((nswap + dmmax - 1) / dmmax) * dmmax;
+       nswap *= nswdev;
+       /*
+        * If there are multiple swap areas,
+        * allow more paging operations per second.
+        */
+       if (nswdev > 1)
+               maxpgio = (maxpgio * (2 * nswdev - 1)) / 2;
+       if (error = swfree(0)) {
+               printf("swfree errno %d\n", error);     /* XXX */
+               panic("swapinit swfree 0");
+       }
+
+       /*
+        * Now set up swap buffer headers.
+        */

        bswlist.av_forw = sp;
        for (i=0; i<nswbuf-1; i++, sp++)
                sp->av_forw = sp+1;
        bswlist.av_forw = sp;
        for (i=0; i<nswbuf-1; i++, sp++)
                sp->av_forw = sp+1;