build/bin/buildrc

38 lines
1.1 KiB
Plaintext
Raw Normal View History

# Emerge wrapper, uses matter lock file support to avoid
# concurrent execution
emerge() {
2012-09-06 14:30:19 +02:00
snapshot_lock_file="/var/tmp/.emerge.snapshot.lock"
matter_lock_file="/var/tmp/.matter_resource.lock"
flock -x -n "${matter_lock_file}" true
rc=${?}
if [ "${rc}" != "0" ]; then
echo >&2
echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >&2
echo "Matter or the Backup Script is running on this chroot" >&2
echo "Please be patient, it will eventually terminate..." >&2
echo "Snapshot lock file = ${snapshot_lock_file}" >&2
echo "Matter lock file = ${matter_lock_file}" >&2
echo >&2
echo "this emerge instance will terminate NOW" >&2
echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >&2
echo >&2
return 1
else
# acquire snapshot read lock in non-blocking, shared mode
(
flock -s -n 9 || {
echo "Hello there," >&2;
echo "a chroot snapshot is in progress..." >%2;
echo "Try again later." >&2;
exit 1;
}
# eval $(portageq envvar -v FETCHCOMMAND RESUMECOMMAND PORTAGE_RSYNC_OPTS)
# add bandwidth limit here
/usr/bin/emerge --quiet-build=n "$@"
exit ${?}
) 9> "${snapshot_lock_file}"
return "${?}"
fi
}