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makesums revision 1.16 
      1 #!/bin/sh
      2 #
      3 # $NetBSD: makesums,v 1.16 2009/09/19 07:09:54 snj Exp $
      4 #
      5 # Make checksum files for files in ``tardir''.  Usage:
      6 # makesums [-a] [-t tardir] [setname [...]]
      7 #
      8 # If -t is omitted, RELEASEDIR must be set and not empty.
      9 # The ``setname'' arguments comprise a list of files to checksum,
     10 # and may be omitted (in which case ``*.tgz'' is used).
     11 # If -A is given, then the checksum are appended to possibly existing files.
     12 # NOTE: Don't use this when running parallel jobs
     13 # If -a is given, then the list of sets is ignored, and ``*'' is used.
     14 #
     15 # After shell glob expansion, the list of sets is filtered to remove known
     16 # output file names (of the form *SUM, SHA512 and MD5), non-existent files, and
     17 # subdirectories. If this filtering leaves no files, then no output files are
     18 # produced. Otherwise the resulting list of files are checksummed and two
     19 # output files (MD5 and SHA512) are produced.
     20 #
     21 
     22 prog="${0##*/}"
     23 rundir="$(dirname "$0")" # ${0%/*} isn't good enough when there's no "/"
     24 . "${rundir}/sets.subr"
     25 
     26 # set defaults
     27 targetdir="${RELEASEDIR}"
     28 dash_all=no
     29 append=\>
     30 
     31 usage()
     32 {
     33 	cat 1>&2 <<USAGE
     34 Usage: ${prog} [-A] [-a] [-t targetdir] [setname [...]]
     35 	-A		Append to possible existing checksum files 
     36 	-a		checksum all plain files instead of [setname [...]]
     37 	-t targetdir	\${RELEASEDIR}		[${targetdir}]
     38 	setname [...]	sets to checksum 	[*.tgz]
     39 USAGE
     40 	exit 1
     41 }
     42 
     43 # handle args
     44 while getopts aAt: ch; do
     45 	case ${ch} in
     46 	A)
     47 		append=\>\>
     48 		;;
     49 	a)
     50 		dash_all=yes
     51 		;;
     52 	t)	
     53 		targetdir="${OPTARG}"
     54 		;;
     55 	*)
     56 		usage
     57 		;;
     58 	esac
     59 done
     60 shift $((${OPTIND} - 1))
     61 
     62 if [ -z "${targetdir}" ]; then
     63 	echo >&2 "${prog}: \${RELEASEDIR} must be set or provided with -t"
     64 	exit 1
     65 fi
     66 
     67 cd "${targetdir}"
     68 pat="$*"
     69 if [ "${dash_all}" = yes ]; then
     70 	pat='*'
     71 elif [ -z "${pat}" ]; then
     72 	pat='*.tgz'
     73 fi
     74 lists="$(${FIND} ${pat} -prune \( -type f -o -type l \) \
     75 	\! -name '*SUM' \! -name MD5 \! -name SHA512 2>/dev/null)"
     76 if [ -n "${lists}" ]; then
     77 	eval ${CKSUM} -a md5  ${lists} ${append} MD5
     78 	eval ${CKSUM} -a sha512  ${lists} ${append} SHA512
     79 fi
     80