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|
#!/bin/sh
#
# syspkgdeps [-a arch] [-m machine] [-s setsdir] [-p prefix] sets
#
# Compute naive package dependencies based on file & directory
# nesting. E.g., if pkg P contains /foo/bar and Q contains /foo,
# then Q is considered a dependency of P.
#
# Each line of output contains two syspkg names,
# where the first syspkg depends on the second syspkg.
#
#set -u
prog="${0##*/}"
rundir="$(dirname "$0")" # ${0%/*} isn't good enough when there's no "/"
. "${rundir}/sets.subr"
#
# set defaults
#
prefix=/
usage()
{
cat 1>&2 <<USAGE
Usage: ${0##*/} [-a arch] [-m machine] [-s setsdir] [-p prefix] setname [...]
-a arch set arch (e.g, m68k, mips, powerpc) [${MACHINE_ARCH}]
-m machine set machine (e.g, amiga, i386, macppc) [${MACHINE}]
-s setsdir directory to find sets [${setsdir}]
-p prefix prefix for created plist [${prefix}]
setname [...] sets to find dependencies for
USAGE
exit 1
}
# parse arguments
while getopts a:m:p:s: ch; do
case ${ch} in
a)
MACHINE_ARCH="${OPTARG}"
MACHINE_CPU="$(arch_to_cpu "${OPTARG}")"
;;
m)
MACHINE="${OPTARG}"
;;
p)
prefix="${OPTARG}"
;;
s)
setsdir="${OPTARG}"
;;
*)
usage
;;
esac
done
shift $((${OPTIND} - 1))
if [ $# -lt 1 ]; then
usage
fi
sets="$*"
case "${sets}" in
all) sets="${nlists}" ;;
esac
# TBD clean up
SCRATCH="$(${MKTEMP} -d "/var/tmp/${prog}.XXXXXX")"
if [ $? -ne 0 ]; then
echo >&2 "${prog}: Could not create scratch directory."
exit 1
fi
PATH_MEMBERSHIP="${SCRATCH}/path-membership"
PATH_TO_PKGNAME="${SCRATCH}/pathpkg.db"
PARENT_PKGNAMES="${SCRATCH}/parent-pkgnames"
PARENT_PATHNAMES="${SCRATCH}/parent-pathnames"
echo >&2 "${prog}: indexing packages by pathnames"
list_set_files ${sets} | ${SED} 's/^\.\///' | \
${ENV_CMD} PREFIX="${prefix}" ${AWK} '{
if ($1 == ".") {
print ENVIRON["PREFIX"] " " $2;
} else {
print ENVIRON["PREFIX"] $1 " " $2;
}
}' | ${SORT} -k 1 -u > "${PATH_MEMBERSHIP}"
${DB} -q -w -f - btree "${PATH_TO_PKGNAME}" < "${PATH_MEMBERSHIP}"
if [ $? -ne 0 ]; then
echo >&2 "${prog}: error creating database, aborting"
exit 1
fi
echo >&2 "${prog}: computing parent pathnames"
while read pathname pkgname; do
# print parent pathname.
# (This uses a cheap implementation of dirname from sets.subr.)
dirname "${pathname}"
done < "${PATH_MEMBERSHIP}" > "${PARENT_PATHNAMES}"
echo >&2 "${prog}: selecting parent packages using parent pathnames"
${DB} -q -f - btree "${PATH_TO_PKGNAME}" < "${PARENT_PATHNAMES}" | \
${PASTE} "${PATH_MEMBERSHIP}" - | \
${AWK} '{ if ($2 != $4) print $2 " " $4; }' | \
${SORT} -u > "${SCRATCH}/alldeps"
if [ $? -ne 0 ]; then
echo >&2 "${prog}: error in parent-directory lookup, aborting"
exit 1
fi
echo >&2 "${prog}: checking for cyclic dependencies"
tsort_errors="$(${TSORT} < "${SCRATCH}/alldeps" 2>&1 >/dev/null)"
if [ -n "${tsort_errors}" ]; then
# Errors from tsort are usually to do with cyclic dependencies.
# The most likely underlying cause is that /foo and /foo/bar/baz
# are in syspkg A, but /foo/bar is in syspkg B.
echo >&2 "${tsort_errors}" # this is likely to be multiple lines
echo >&2 "${prog}: Above messages probably indicate an error in the lists"
exit 1
fi
echo >&2 "${prog}: removing redundant dependencies"
${HOST_SH} "${rundir}/culldeps" < "${SCRATCH}/alldeps"
if [ $? -ne 0 ]; then
echo >&2 "${prog}: error in culldeps, aborting"
exit 1
fi
|
