2.11BSD#431 - /usr/src/sys/conf/param.c

   1: /*
   2:  * Copyright (c) 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)param.c	2.2 (2.11BSD GTE) 1997/2/14
   7:  */
   8: 
   9: #include "../h/param.h"
  10: #include "../h/systm.h"
  11: #include "../h/buf.h"
  12: #include "../h/time.h"
  13: #include "../h/resource.h"
  14: #include "../h/proc.h"
  15: #include "../h/text.h"
  16: #include "../h/file.h"
  17: #include "../h/dir.h"
  18: #include "../h/inode.h"
  19: #include "../h/fs.h"
  20: #include "../h/mount.h"
  21: #include "../h/callout.h"
  22: #include "../h/map.h"
  23: #include "../h/clist.h"
  24: #include "../machine/seg.h"
  25: 
  26: /*
  27:  * System parameter formulae.
  28:  *
  29:  * This file is copied into each directory where we compile
  30:  * the kernel; it should be modified there to suit local taste
  31:  * if necessary.
  32:  *
  33:  */
  34: 
  35: #define MAXUSERS %MAXUSERS%
  36: #define NBUF %NBUF%
  37: 
  38: int hz = %LINEHZ%;
  39: u_short mshz = (1000000L + %LINEHZ% - 1) / %LINEHZ%;
  40: struct  timezone tz = { %TIMEZONE%, %DST% };
  41: 
  42: #define NPROC (10 + 7 * MAXUSERS)
  43: int nproc = NPROC;
  44: #define NTEXT (26 + MAXUSERS)
  45: int ntext = NTEXT;
  46: #define NINODE ((NPROC + 16 + MAXUSERS) + 22)
  47: int ninode = NINODE;
  48: #define NFILE ((8 * NINODE / 10) + 20)
  49: int nfile = NFILE;
  50: #define NCALL (16 + MAXUSERS)
  51: int ncallout = NCALL;
  52: int nbuf = NBUF;
  53: 
  54: #define NCLIST (20 + 8 * MAXUSERS)
  55: #if NCLIST > (8192 / 32)        /* 8K / sizeof(struct cblock) */
  56: #undef NCLIST
  57: #define NCLIST (8192 / 32)
  58: #endif
  59: int nclist = NCLIST;
  60: 
  61: /*
  62:  * These have to be allocated somewhere; allocating
  63:  * them here forces loader errors if this file is omitted
  64:  * (if they've been externed everywhere else; hah!).
  65:  */
  66: struct  proc *procNPROC;
  67: struct  text *textNTEXT;
  68: struct  inode inode[NINODE], *inodeNINODE;
  69: struct  file *fileNFILE;
  70: struct  callout callout[NCALL];
  71: struct  mount mount[NMOUNT];
  72: struct  buf buf[NBUF], bfreelist[BQUEUES];
  73: struct  bufhd bufhash[BUFHSZ];
  74: 
  75: /*
  76:  * Remove the ifdef/endif to run the kernel in unsecure mode even when in
  77:  * a multiuser state.  Normally 'init' raises the security level to 1
  78:  * upon transitioning to multiuser.  Setting the securelevel to -1 prevents
  79:  * the secure level from being raised by init.
  80: */
  81: #ifdef  PERMANENTLY_INSECURE
  82: int securelevel = -1;
  83: #endif
  84: 
  85: #ifdef UCB_CLIST
  86:     u_int clstdesc = ((((btoc(NCLIST*sizeof(struct cblock)))-1) << 8) | RW);
  87:     int ucb_clist = 1;
  88: #else
  89:     struct cblock   cfree[NCLIST];
  90:     int ucb_clist = 0;
  91: #endif
  92: 
  93: #define CMAPSIZ NPROC           /* size of core allocation map */
  94: #define SMAPSIZ ((9 * NPROC) / 10)  /* size of swap allocation map */
  95: 
  96: struct mapent   _coremap[CMAPSIZ];
  97: struct map  coremap[1] = {
  98:     _coremap,
  99:     &_coremap[CMAPSIZ],
 100:     "coremap",
 101: };
 102: 
 103: struct mapent   _swapmap[SMAPSIZ];
 104: struct map  swapmap[1] = {
 105:     _swapmap,
 106:     &_swapmap[SMAPSIZ],
 107:     "swapmap",
 108: };
 109: 
 110: #ifdef QUOTA
 111: #include "../h/quota.h"
 112: struct BigQ {
 113:     struct  quota xquota[NQUOTA];       /* the quotas themselves */
 114:     struct  dquot *ixdquot[NINODE];     /* 2.11 equiv of i_dquot */
 115:     struct  dquot xdquot[NDQUOT];       /* the dquots themselves */
 116:     struct  qhash xqhash[NQHASH];
 117:     struct  dqhead xdqhash[NDQHASH];
 118: };
 119: 
 120: QUOini()
 121: {
 122:     extern struct qhash *qhash;
 123:     extern struct dqhead *dqhead;
 124: 
 125:     quota = ((struct BigQ *)SEG5)->xquota;
 126:     dquot = ((struct BigQ *)SEG5)->xdquot;
 127:     qhash = ((struct BigQ *)SEG5)->xqhash;
 128:     dqhead = ((struct BigQ *)SEG5)->xdqhash;
 129:     ndquot = NDQUOT;
 130:     nquota = NQUOTA;
 131:     ix_dquot = ((struct BigQ *)SEG5)->ixdquot;
 132:     dquotNDQUOT = &dquot[ndquot];
 133:     quotaNQUOTA = &quota[nquota];
 134: }
 135: #endif
 136: 
 137: /*
 138:  * Declarations of structures loaded last and allowed to reside in the
 139:  * 0120000-140000 range (where buffers and clists are mapped).  These
 140:  * structures must be extern everywhere else, and the asm output of cc
 141:  * is edited to move these structures from comm to bss (which is last)
 142:  * (see the script :comm-to-bss).  They are in capital letters so that
 143:  * the edit script doesn't find some other occurrence.
 144:  */
 145: struct proc PROC[NPROC];
 146: struct file FILE[NFILE];
 147: struct text TEXT[NTEXT];

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