-
-# If we're going to rename the final executable, determine the name now.
-
- if [ x"$transformarg" = x ]
- then
- dstfile=`basename $dst`
- else
- dstfile=`basename $dst $transformbasename |
- sed $transformarg`$transformbasename
- fi
-
-# don't allow the sed command to completely eliminate the filename
-
- if [ x"$dstfile" = x ]
- then
- dstfile=`basename $dst`
- else
- :
- fi
-
-# Make a temp file name in the proper directory.
-
- dsttmp=$dstdir/#inst.$$#
-
-# Move or copy the file name to the temp name
-
- $doit $instcmd $src $dsttmp &&
-
- trap "rm -f ${dsttmp}" 0 &&
-
-# and set any options; do chmod last to preserve setuid bits
-
-# If any of these fail, we abort the whole thing. If we want to
-# ignore errors from any of these, just make sure not to ignore
-# errors from the above "$doit $instcmd $src $dsttmp" command.
-
- if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else :;fi &&
- if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else :;fi &&
- if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else :;fi &&
- if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else :;fi &&
-
-# Now rename the file to the real destination.
-
- $doit $rmcmd -f $dstdir/$dstfile &&
- $doit $mvcmd $dsttmp $dstdir/$dstfile
-
+ # If we're going to rename the final executable, determine the name now.
+ if test -z "$transformarg"; then
+ dstfile=`basename "$dst"`
+ else
+ dstfile=`basename "$dst" $transformbasename \
+ | sed $transformarg`$transformbasename
+ fi
+
+ # don't allow the sed command to completely eliminate the filename.
+ test -z "$dstfile" && dstfile=`basename "$dst"`
+
+ # Make a couple of temp file names in the proper directory.
+ dsttmp=$dstdir/_inst.$$_
+ rmtmp=$dstdir/_rm.$$_
+
+ # Trap to clean up those temp files at exit.
+ trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
+ trap '(exit $?); exit' 1 2 13 15
+
+ # Move or copy the file name to the temp name
+ $doit $instcmd "$src" "$dsttmp" &&
+
+ # and set any options; do chmod last to preserve setuid bits.
+ #
+ # If any of these fail, we abort the whole thing. If we want to
+ # ignore errors from any of these, just make sure not to ignore
+ # errors from the above "$doit $instcmd $src $dsttmp" command.
+ #
+ { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
+ && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
+ && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
+ && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
+
+ # Now remove or move aside any old file at destination location. We
+ # try this two ways since rm can't unlink itself on some systems and
+ # the destination file might be busy for other reasons. In this case,
+ # the final cleanup might fail but the new file should still install
+ # successfully.
+ {
+ if test -f "$dstdir/$dstfile"; then
+ $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
+ || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
+ || {
+ echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
+ (exit 1); exit
+ }
+ else
+ :
+ fi
+ } &&
+
+ # Now rename the file to the real destination.
+ $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"