X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=gzexe.in;fp=gzexe.in;h=b67e92e6c0c6c863fdba9968eb4ea9d1b2d63883;hb=8f94ab178da95f87bd131b8faaec313a5d9d672f;hp=b7a0cf4c260495553447721350e7ed94d0937910;hpb=302189d124ed5849c2589ea92e912eb24fdc4ab3;p=gzip

diff --git a/gzexe.in b/gzexe.in
index b7a0cf4..b67e92e 100755
--- a/gzexe.in
+++ b/gzexe.in
@@ -13,7 +13,7 @@
 # The : is required for some old versions of csh.
 # On Ultrix, /bin/sh is too buggy, change the first line to: #!/bin/sh5
 
-x=`basename $0`
+x=`basename "$0"`
 if test $# = 0; then
   echo compress executables. original file foo is renamed to foo~
   echo usage: ${x} [-d] files...
@@ -21,9 +21,6 @@ if test $# = 0; then
   exit 1
 fi
 
-tmp=gz$$
-trap "rm -f $tmp; exit 1" 1 2 3 5 10 13 15
-
 decomp=0
 res=0
 test "$x" = "ungzexe" && decomp=1
@@ -32,12 +29,10 @@ if test "x$1" = "x-d"; then
   shift
 fi
 
-echo hi > zfoo1$$
-echo hi > zfoo2$$
-if test -z "`(${CPMOD-cpmod} zfoo1$$ zfoo2$$) 2>&1`"; then
-  cpmod=${CPMOD-cpmod}
+cpmod=
+if type ${CPMOD:-cpmod} 2>/dev/null; then
+  cpmod=${CPMOD:-cpmod}
 fi
-rm -f zfoo[12]$$
 
 tail=""
 IFS="${IFS= 	}"; saveifs="$IFS"; IFS="${IFS}:"
@@ -75,9 +70,14 @@ for i do
     continue
   fi
   case "`basename $i`" in
-  gzip | tail | chmod | ln | sleep | rm)
+  bash | chmod | gzip | ln | mktemp | rm | sed | sh | tail)
 	echo "${x}: $i would depend on itself"; continue ;;
   esac
+
+  tmp=`/bin/mktemp -t gzexe.XXXXXXXXXX` || exit 1
+  trap "rm -f $tmp; exit 1" HUP INT QUIT PIPE TERM
+  trap "rm -f $tmp; exit 0" EXIT
+
   if test -z "$cpmod"; then
     cp -p "$i" $tmp 2>/dev/null || cp "$i" $tmp
     if test -w $tmp 2>/dev/null; then
@@ -90,22 +90,23 @@ for i do
   if test $decomp -eq 0; then
     sed 1q $0 > $tmp
     sed "s|^if tail|if $tail|" >> $tmp <<'EOF'
-skip=22
+skip=23
 set -C
 umask=`umask`
 umask 77
-if tail +$skip $0 | "BINDIR"/gzip -cd > /tmp/gztmp$$; then
+tmpfile=$(tempfile -p gztmp -d /tmp)
+if tail +$skip $0 | /bin/gzip -cd >> $tmpfile; then
   umask $umask
-  /bin/chmod 700 /tmp/gztmp$$
+  /bin/chmod 700 $tmpfile
   prog="`echo $0 | /bin/sed 's|^.*/||'`"
-  if /bin/ln /tmp/gztmp$$ "/tmp/$prog" 2>/dev/null; then
-    trap '/bin/rm -f /tmp/gztmp$$ "/tmp/$prog"; exit $res' 0
-    (/bin/sleep 5; /bin/rm -f /tmp/gztmp$$ "/tmp/$prog") 2>/dev/null &
+  if /bin/ln $tmpfile "/tmp/$prog" 2>/dev/null; then
+    trap '/bin/rm -f $tmpfile "/tmp/$prog"; exit $res' 0
+    (/bin/sleep 5; /bin/rm -f $tmpfile "/tmp/$prog") 2>/dev/null &
     /tmp/"$prog" ${1+"$@"}; res=$?
   else
-    trap '/bin/rm -f /tmp/gztmp$$; exit $res' 0
-    (/bin/sleep 5; /bin/rm -f /tmp/gztmp$$) 2>/dev/null &
-    /tmp/gztmp$$ ${1+"$@"}; res=$?
+    trap '/bin/rm -f $tmpfile; exit $res' 0
+    (/bin/sleep 5; /bin/rm -f $tmpfile) 2>/dev/null &
+    $tmpfile ${1+"$@"}; res=$?
   fi
 else
   echo Cannot decompress $0; exit 1
@@ -128,6 +129,7 @@ EOF
       :
     else
       echo ${x}: $i probably not in gzexe format, file unchanged.
+      rm -f $tmp
       res=1
       continue
     fi