projects / unix-history / blame
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1 | #!/bin/sh - |
| 2 | # | |
| 58777538 KB |
3 | # Copyright (c) 1985 The Regents of the University of California. |
| 4 | # All rights reserved. | |
| 5 | # | |
| 6 | # This code is derived from software contributed to Berkeley by | |
| 7 | # James A. Woods, derived from original work by Spencer Thomas | |
| 8 | # and Joseph Orost. | |
| 9 | # | |
| 10 | # Redistribution and use in source and binary forms are permitted | |
| 11 | # provided that the above copyright notice and this paragraph are | |
| 12 | # duplicated in all such forms and that any documentation, | |
| 13 | # advertising materials, and other materials related to such | |
| 14 | # distribution and use acknowledge that the software was developed | |
| 15 | # by the University of California, Berkeley. The name of the | |
| 16 | # University may not be used to endorse or promote products derived | |
| 17 | # from this software without specific prior written permission. | |
| 18 | # THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 19 | # IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 20 | # WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 21 | # | |
| b528bd5e | 22 | # @(#)usermem.sh 5.6 (Berkeley) %G% |
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23 | # |
| 24 | : This shell script snoops around to find the maximum amount of available | |
| 25 | : user memory. These variables need to be set only if there is no | |
| 26 | : /usr/adm/messages. KMEM, UNIX, and CLICKSIZE can be set on the command | |
| 27 | : line, if desired, e.g. UNIX=/unix | |
| 28 | KMEM=/dev/kmem # User needs read access to KMEM | |
| 29 | UNIX= | |
| 30 | # VAX CLICKSIZE=512, UNIX=/vmunix | |
| 31 | # PDP-11 CLICKSIZE=64, UNIX=/unix | |
| 32 | # CADLINC 68000 CLICKSIZE=4096, UNIX=/unix | |
| 33 | # Perkin-Elmer 3205 CLICKSIZE=4096, UNIX=/edition7 | |
| 34 | # Perkin-Elmer all others, CLICKSIZE=2048, UNIX=/edition7 | |
| 35 | CLICKSIZE=512 | |
| 36 | eval $* | |
| 37 | ||
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38 | if test -n "$UNIX" |
| 39 | then | |
| 40 | : User must have specified it already. | |
| 41 | elif test -r /vmunix | |
| 42 | then | |
| 43 | UNIX=/vmunix | |
| 44 | CLICKSIZE=512 # Probably VAX | |
| 45 | elif test -r /edition7 | |
| 46 | then | |
| 47 | UNIX=/edition7 | |
| 48 | CLICKSIZE=2048 # Perkin-Elmer: change to 4096 on a 3205 | |
| 49 | elif test -r /unix | |
| 50 | then | |
| 51 | UNIX=/unix # Could be anything | |
| 52 | fi | |
| 53 | ||
| 64d06f2f | 54 | SIZE=0 |
| 6b2a673d | 55 | # messages: probably the most transportable |
| b528bd5e | 56 | if test -r /var/log/messages -a -s /var/log/messages |
| 64d06f2f | 57 | then |
| b528bd5e | 58 | SIZE=`grep avail /var/log/messages | sed -n '$s/.*[ ]//p'` |
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59 | fi |
| 60 | ||
| 61 | if test 0$SIZE -le 0 # no SIZE in /usr/adm/messages | |
| 62 | then | |
| 63 | if test -r $KMEM # Readable KMEM | |
| 64 | then | |
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65 | if test -n "$UNIX" |
| 66 | then | |
| 67 | SIZE=`echo maxmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'` | |
| 68 | if test 0$SIZE -le 0 | |
| 69 | then | |
| 4eeb10d4 | 70 | SIZE=`echo physmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'` |
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71 | fi |
| 72 | SIZE=`expr 0$SIZE '*' $CLICKSIZE` | |
| 73 | fi | |
| 74 | fi | |
| 75 | fi | |
| 76 | ||
| 4eeb10d4 JL |
77 | case $UNIX in |
| 78 | /vmunix) # Assume 4.2bsd: check for resource limits | |
| 79 | MAXSIZE=`csh -c limit | awk 'BEGIN { MAXSIZE = 1000000 } | |
| 80 | /datasize|memoryuse/ && NF == 3 { if ($2 < MAXSIZE) MAXSIZE = $2 } | |
| 81 | END { print MAXSIZE * 1000 }'` | |
| 82 | if test $MAXSIZE -lt $SIZE | |
| 83 | then | |
| 84 | SIZE=$MAXSIZE | |
| 85 | fi | |
| 86 | ;; | |
| 87 | esac | |
| 88 | ||
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89 | if test 0$SIZE -le 0 |
| 90 | then | |
| 4eeb10d4 | 91 | echo 0;exit 1 |
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92 | else |
| 93 | echo $SIZE | |
| 94 | fi |