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 6a77647..286ff79 100644 (file)
--- a/usr/src/sys/kern/init_main.c
+++ b/usr/src/sys/kern/init_main.c
@@ -1,4 +1,10 @@
-/*     init_main.c     6.7     85/03/03        */
+/*
+ * 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"
 


@@ -19,10 +25,10 @@
 #include "cmap.h"
 #include "text.h"
 #include "clist.h"
 #include "cmap.h"
 #include "text.h"
 #include "clist.h"

-#ifdef INET
+#include "malloc.h"

 #include "protosw.h"
 #include "protosw.h"

-#endif

 #include "quota.h"
 #include "quota.h"

+#include "reboot.h"

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


@@ -38,17 +44,15 @@ int cmask = CMASK;
  *     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

  */
 main(firstaddr)
        int firstaddr;
 {
        register int i;
        register struct proc *p;
  */
 main(firstaddr)
        int firstaddr;
 {
        register int i;
        register struct proc *p;

+       register struct pgrp *pg;

        struct fs *fs;
        int s;
 
        struct fs *fs;
        int s;
 


@@ -68,42 +72,65 @@ main(firstaddr)
        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 vax
+       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;

        /*
        /*

-        * This assumes that the u. area is always mapped 
-        * to the same physical address. Otherwise must be
+        * 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;
         * handled when copying the u. area in newproc().
         */
        u.u_nd.ni_iov = &u.u_nd.ni_iovec;

-#endif
+       u.u_ap = u.u_arg;

        u.u_nd.ni_iovcnt = 1;
        u.u_nd.ni_iovcnt = 1;

+

        u.u_cmask = cmask;
        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(MAXSSIZ);
-       u.u_rlimit[RLIMIT_DATA].rlim_max =
-           u.u_rlimit[RLIMIT_DATA].rlim_cur = ctob(MAXDSIZ);
-       /* p_maxrss is set later, in pageout (process 2) */
+       /*
+        * 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();
 #if defined(QUOTA)
        qtinit();
        p->p_quota = u.u_quota = getquota(0, 0, Q_NDQ);
 #endif
        startrtclock();

+#if defined(vax)

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


@@ -113,22 +140,18 @@ main(firstaddr)
         */
        s = splimp();
        ifinit();
         */
        s = splimp();
        ifinit();

-#endif

        domaininit();
        domaininit();

-#ifdef INET

        splx(s);
        splx(s);

-#endif

        pqinit();
        pqinit();

+       xinit();

        ihinit();
        ihinit();

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

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


@@ -151,6 +174,7 @@ main(firstaddr)
        u.u_dmap = zdmap;
        u.u_smap = zdmap;
 
        u.u_dmap = zdmap;
        u.u_smap = zdmap;
 

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

        /*
         * make init process
         */
        /*
         * make init process
         */


@@ -158,7 +182,7 @@ main(firstaddr)
        proc[0].p_szpt = CLSIZE;
        if (newproc(0)) {
                expand(clrnd((int)btoc(szicode)), 0);
        proc[0].p_szpt = CLSIZE;
        if (newproc(0)) {
                expand(clrnd((int)btoc(szicode)), 0);

-               (void) swpexpand(u.u_dsize, 0, &u.u_dmap, &u.u_smap);
+               (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
                (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
                /*
                 * Return goes to loc. 0 of user init


@@ -207,7 +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++) {


@@ -229,9 +252,25 @@ binit()
                bp->b_flags = B_BUSY|B_INVAL;
                brelse(bp);
        }
                bp->b_flags = B_BUSY|B_INVAL;
                brelse(bp);
        }

+}
+
+/*
+ * 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.
+ */
+swapinit()
+{
+       register int i;
+       register struct buf *sp = swbuf;
+       struct swdevt *swp;
+       int error;
+

        /*
         * Count swap devices, and adjust total swap space available.
        /*
         * Count swap devices, and adjust total swap space available.

-        * Some of this space will not be available until a vswapon()
+        * Some of this space will not be available until a swapon()

         * system is issued, usually when the system goes multi-user.
         */
        nswdev = 0;
         * system is issued, usually when the system goes multi-user.
         */
        nswdev = 0;


@@ -242,25 +281,24 @@ binit()
                        nswap = swp->sw_nblks;
        }
        if (nswdev == 0)
                        nswap = swp->sw_nblks;
        }
        if (nswdev == 0)

-               panic("binit");
+               panic("swapinit");

        if (nswdev > 1)
                nswap = ((nswap + dmmax - 1) / dmmax) * dmmax;
        nswap *= nswdev;
        if (nswdev > 1)
                nswap = ((nswap + dmmax - 1) / dmmax) * dmmax;
        nswap *= nswdev;

-       maxpgio *= nswdev;
-       swfree(0);
-}
-
-/*
- * 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()
-{
-       register int i;
-       register struct buf *sp = swbuf;
+       /*
+        * 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;