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Diffstat (limited to 'xc/util/compress/usermem.sh')
| -rw-r--r-- | xc/util/compress/usermem.sh | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/xc/util/compress/usermem.sh b/xc/util/compress/usermem.sh new file mode 100644 index 000000000..e6e976325 --- /dev/null +++ b/xc/util/compress/usermem.sh @@ -0,0 +1,94 @@ +#!/bin/sh - +# +# Copyright (c) 1985 The Regents of the University of California. +# All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# James A. Woods, derived from original work by Spencer Thomas +# and Joseph Orost. +# +# Redistribution and use in source and binary forms are permitted +# provided that the above copyright notice and this paragraph are +# duplicated in all such forms and that any documentation, +# advertising materials, and other materials related to such +# distribution and use acknowledge that the software was developed +# by the University of California, Berkeley. The name of the +# University may not be used to endorse or promote products derived +# from this software without specific prior written permission. +# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED +# WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. +# +# @(#)usermem.sh 5.5 (Berkeley) 10/15/88 +# +: This shell script snoops around to find the maximum amount of available +: user memory. These variables need to be set only if there is no +: /usr/adm/messages. KMEM, UNIX, and CLICKSIZE can be set on the command +: line, if desired, e.g. UNIX=/unix +KMEM=/dev/kmem # User needs read access to KMEM +UNIX= +# VAX CLICKSIZE=512, UNIX=/vmunix +# PDP-11 CLICKSIZE=64, UNIX=/unix +# CADLINC 68000 CLICKSIZE=4096, UNIX=/unix +# Perkin-Elmer 3205 CLICKSIZE=4096, UNIX=/edition7 +# Perkin-Elmer all others, CLICKSIZE=2048, UNIX=/edition7 +CLICKSIZE=512 +eval $* + +if test -n "$UNIX" +then + : User must have specified it already. +elif test -r /vmunix +then + UNIX=/vmunix + CLICKSIZE=512 # Probably VAX +elif test -r /edition7 +then + UNIX=/edition7 + CLICKSIZE=2048 # Perkin-Elmer: change to 4096 on a 3205 +elif test -r /unix +then + UNIX=/unix # Could be anything +fi + +SIZE=0 +# messages: probably the most transportable +if test -r /usr/adm/messages -a -s /usr/adm/messages +then + SIZE=`grep avail /usr/adm/messages | sed -n '$s/.*[ ]//p'` +fi + +if test 0$SIZE -le 0 # no SIZE in /usr/adm/messages +then + if test -r $KMEM # Readable KMEM + then + if test -n "$UNIX" + then + SIZE=`echo maxmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'` + if test 0$SIZE -le 0 + then + SIZE=`echo physmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'` + fi + SIZE=`expr 0$SIZE '*' $CLICKSIZE` + fi + fi +fi + +case $UNIX in + /vmunix) # Assume 4.2bsd: check for resource limits + MAXSIZE=`csh -c limit | awk 'BEGIN { MAXSIZE = 1000000 } +/datasize|memoryuse/ && NF == 3 { if ($2 < MAXSIZE) MAXSIZE = $2 } +END { print MAXSIZE * 1000 }'` + if test $MAXSIZE -lt $SIZE + then + SIZE=$MAXSIZE + fi + ;; +esac + +if test 0$SIZE -le 0 +then + echo 0;exit 1 +else + echo $SIZE +fi |