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* install.sh: If one command fails, don't try the rest. Don't try

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to remove $dsttmp (via trap) unless we have already created it.
	If $src doesn't exist, detect it and exit with an error.
This commit is contained in:
Jim Kingdon 1993-08-16 02:49:53 +00:00
parent e45500abea
commit 731b07201a
1 changed files with 25 additions and 8 deletions
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33
install.sh
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@ -95,6 +95,18 @@ else
true
fi
# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if [ -f $src -o -d $src ]
then
true
else
echo "install: $src does not exist"
exit 1
fi
if [ x"$dst" = x ]
then
echo "install: no destination specified"
@ -119,7 +131,6 @@ fi
## this sed command emulates the dirname command
dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
dsttmp=$dstdir/#inst.$$#
trap "rm -f ${dsttmp}" 0
# Make sure that the destination directory exists.
# this part is taken from Noah Friedman's mkinstalldirs script
@ -170,19 +181,25 @@ fi
# Move or copy the file name to the temp name
$doit $instcmd $src $dsttmp
$doit $instcmd $src $dsttmp &&
trap "rm -f ${dsttmp}" 0 &&
# and set any options; do chmod last to preserve setuid bits
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; fi
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; fi
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; fi
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; fi
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $instcmd $src $dsttmp" command.
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; fi &&
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; fi &&
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; fi &&
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; fi &&
# Now rename the file to the real destination.
$doit $rmcmd $dstdir/$dstfile
$doit $mvcmd $dsttmp $dstdir/$dstfile
$doit $rmcmd -f $dstdir/$dstfile &&
$doit $mvcmd $dsttmp $dstdir/$dstfile &&
exit 0