minix/distrib/sets/makesums

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#!/bin/sh
#
# $NetBSD: makesums,v 1.16 2009/09/19 07:09:54 snj Exp $
#
# Make checksum files for files in ``tardir''. Usage:
# makesums [-a] [-t tardir] [setname [...]]
#
# If -t is omitted, RELEASEDIR must be set and not empty.
# The ``setname'' arguments comprise a list of files to checksum,
# and may be omitted (in which case ``*.tgz'' is used).
# If -A is given, then the checksum are appended to possibly existing files.
# NOTE: Don't use this when running parallel jobs
# If -a is given, then the list of sets is ignored, and ``*'' is used.
#
# After shell glob expansion, the list of sets is filtered to remove known
# output file names (of the form *SUM, SHA512 and MD5), non-existent files, and
# subdirectories. If this filtering leaves no files, then no output files are
# produced. Otherwise the resulting list of files are checksummed and two
# output files (MD5 and SHA512) are produced.
#
prog="${0##*/}"
rundir="$(dirname "$0")" # ${0%/*} isn't good enough when there's no "/"
. "${rundir}/sets.subr"
# set defaults
targetdir="${RELEASEDIR}"
dash_all=no
append=\>
usage()
{
cat 1>&2 <<USAGE
Usage: ${prog} [-A] [-a] [-t targetdir] [setname [...]]
-A Append to possible existing checksum files
-a checksum all plain files instead of [setname [...]]
-t targetdir \${RELEASEDIR} [${targetdir}]
setname [...] sets to checksum [*.tgz]
USAGE
exit 1
}
# handle args
while getopts aAt: ch; do
case ${ch} in
A)
append=\>\>
;;
a)
dash_all=yes
;;
t)
targetdir="${OPTARG}"
;;
*)
usage
;;
esac
done
shift $((${OPTIND} - 1))
if [ -z "${targetdir}" ]; then
echo >&2 "${prog}: \${RELEASEDIR} must be set or provided with -t"
exit 1
fi
cd "${targetdir}"
pat="$*"
if [ "${dash_all}" = yes ]; then
pat='*'
elif [ -z "${pat}" ]; then
pat='*.tgz'
fi
lists="$(${FIND} ${pat} -prune \( -type f -o -type l \) \
\! -name '*SUM' \! -name MD5 \! -name SHA512 2>/dev/null)"
if [ -n "${lists}" ]; then
eval ${CKSUM} -a md5 ${lists} ${append} MD5
eval ${CKSUM} -a sha512 ${lists} ${append} SHA512
fi