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