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# Copyright 1999-2004 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# RC Dependency and misc service functions
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RC_GOT_SERVICES="yes"
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[[ ${RC_GOT_FUNCTIONS} != "yes" ]] && source /sbin/functions.sh
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if [[ ${RC_GOT_DEPTREE_INFO} != "yes" ]] ; then
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# Only try and update if we are root
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if [[ ${EUID} == "0" ]] && ! /sbin/depscan.sh -u ; then
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echo
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eerror "Error running '/sbin/depscan.sh'!"
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eerror "Please correct any problems above."
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exit 1
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fi
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source "${svcdir}/deptree"
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if [[ ${RC_GOT_DEPTREE_INFO} != "yes" ]] ; then
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echo
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eerror "Dependency info is missing! Please run"
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eerror " # /sbin/depscan.sh"
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eerror "to fix this."
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exit 1
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fi
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fi
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#####################
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# Internal variables
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#####################
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# The name of the service whose dependency info we currently have
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rc_name=
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# The index of the service whose dependency info we currently have
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rc_index=0
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# Our dependency types ...
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rc_ineed=
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rc_needsme=
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rc_iuse=
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rc_usesme=
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rc_ibefore=
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rc_iafter=
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rc_broken=
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rc_mtime=
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############
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# Functions
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############
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# bool get_service_index(service, index)
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#
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# Print the index of 'service'. 'index' is the current index.
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#
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get_service_index() {
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if [[ -z $1 || -z $2 ]] ; then
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echo "0"
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return 1
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fi
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local x myservice="$1" index="$2"
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# Do we already have the index?
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if [[ -n ${index} && ${index} -gt 0 \
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&& ${myservice} == "${RC_DEPEND_TREE[${index}]}" ]] ; then
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echo "${index}"
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return 0
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fi
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for (( x=1; x<=${RC_DEPEND_TREE[0]}; x++ )); do
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index=$(( ${x} * ${rc_index_scale} ))
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if [[ ${myservice} == "${RC_DEPEND_TREE[${index}]}" ]] ; then
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echo "${index}"
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return 0
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fi
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done
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echo "0"
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return 1
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}
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# bool get_dep_info(service)
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#
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# Set the Dependency variables to contain data for 'service'
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#
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get_dep_info() {
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[[ -z $1 ]] && return 1
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local myservice="$1"
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# We already have the right stuff ...
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[[ ${myservice} == "${rc_name}" && -n ${rc_mtime} ]] && return 0
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rc_index="`get_service_index "${myservice}" "${rc_index}"`"
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rc_mtime="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_mtime}))]}"
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# Verify that we have the correct index (rc_index) ...
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# [[ ${rc_index} == "0" ]] && return 1
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rc_name="${RC_DEPEND_TREE[${rc_index}]}"
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rc_ineed="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_ineed}))]}"
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rc_needsme="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_needsme}))]}"
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rc_iuse="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_iuse}))]}"
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rc_usesme="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_usesme}))]}"
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rc_ibefore="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_ibefore}))]}"
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rc_iafter="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_iafter}))]}"
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rc_broken="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_broken}))]}"
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rc_mtime="${RC_DEPEND_TREE[$((${rc_index} + ${rc_type_mtime}))]}"
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return 0
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}
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# string check_dependency(deptype, service1)
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#
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# List all the services that depend on 'service1' of dependency
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# type 'deptype'
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#
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# bool check_dependency(deptype, -t, service1, service2)
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#
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# Returns true if 'service2' is a dependency of type 'deptype'
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# of 'service1'
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#
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check_dependency() {
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[[ -z $1 || -z $2 ]] && return 1
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local x myservice deps
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# Set the dependency variables to relate to 'service1'
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if [[ $2 == "-t" ]] ; then
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[[ -z $3 || -z $4 ]] && return 1
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myservice="$3"
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else
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myservice="$2"
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fi
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if ! get_dep_info "${myservice}" >/dev/null ; then
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eerror "Could not get dependency info for \"${myservice}\"!" > /dev/stderr
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eerror "Please run:" > /dev/stderr
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eerror " # /sbin/depscan.sh" > /dev/stderr
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eerror "to try and fix this." > /dev/stderr
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return 1
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fi
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# Do we have valid info for 'deptype' ?
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eval deps=\"\$\{rc_$1\}\"
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[[ -z ${deps} ]] && return 1
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if [[ $2 == "-t" && -n $4 ]]; then
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# Check if 'service1' have 'deptype' dependency on 'service2'
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for x in ${deps} ; do
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[[ ${x} == "$4" ]] && return 0
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done
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return 1
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else
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# Just list all services that 'service1' have 'deptype' dependency on.
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echo "${deps}"
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return 0
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fi
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'ineed'. It will return all the services 'service1' NEED's.
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ineed() {
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check_dependency ineed "$@"
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'needsme'. It will return all the services that NEED 'service1'.
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needsme() {
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check_dependency needsme "$@"
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'iuse'. It will return all the services 'service1' USE's.
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iuse() {
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check_dependency iuse "$@"
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'usesme'. It will return all the services that USE 'service1'.
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usesme() {
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check_dependency usesme "$@"
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'ibefore'. It will return all the services that are started
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# *after* 'service1' (iow, it will start 'service1' before the
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# list of services returned).
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ibefore() {
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check_dependency ibefore "$@"
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'iafter'. It will return all the services that are started
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# *before* 'service1' (iow, it will start 'service1' after the
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# list of services returned).
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iafter() {
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check_dependency iafter "$@"
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}
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# Same as for check_dependency, except 'deptype' is set to
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# 'broken'. It will return all the services that 'service1'
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# NEED, but are not present.
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broken() {
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check_dependency broken "$@"
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}
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# bool is_fake_service(service, runlevel)
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#
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# Returns ture if 'service' is a fake service in 'runlevel'.
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#
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is_fake_service() {
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local x fake_services
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[[ -z $1 || -z $2 ]] && return 1
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[[ $2 != "${BOOTLEVEL}" && -e /etc/runlevels/"${BOOTLEVEL}"/.fake ]] && \
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fake_services=$( < /etc/runlevels/"${BOOTLEVEL}"/.fake )
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[[ -e /etc/runlevels/"$2"/.fake ]] && \
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fake_services="${fake_services} $( < /etc/runlevels/$2/.fake )"
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for x in ${fake_services} ; do
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[[ $1 == "${x##*/}" ]] && return 0
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done
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return 1
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}
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# bool in_runlevel(service, runlevel)
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#
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# Returns true if 'service' is in runlevel 'runlevel'.
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#
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in_runlevel() {
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[[ -z $1 || -z $2 ]] && return 1
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[[ -L "/etc/runlevels/$2/$1" ]] && return 0
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return 1
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}
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# bool is_runlevel_start()
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#
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# Returns true if it is a runlevel change, and we are busy
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# starting services.
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#
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is_runlevel_start() {
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[[ -d "${svcdir}/softscripts.old" ]]
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}
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# bool is_runlevel_stop()
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#
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# Returns true if it is a runlevel change, and we are busy
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# stopping services.
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#
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is_runlevel_stop() {
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[[ -d "${svcdir}/softscripts.new" ]]
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}
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# void sevice_message([char *type] char *message)
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#
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# Print out a service message if we are on parallel
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service_message() {
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[[ ${RC_PARALLEL_STARTUP} != "yes" ]] && return
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local cmd="einfo"
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if [[ $1 == "1" || $1 == "error" || $1 == "eerror" ]] ; then
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cmd="eerror"
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shift
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fi
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local r="${RC_QUIET_STDOUT}"
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RC_QUIET_STDOUT="no"
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${cmd} "$@"
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RC_QUIET_STDOUT=${r}
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}
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# bool begin_service( service )
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#
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# atomically marks the service as being executed
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# use like this:
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#
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# if begin_service service ; then
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# whatever is in here can only be executed by one process
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# end_service service
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# fi
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begin_service() {
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local service="$1"
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[[ -z ${service} ]] && return 1
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[[ ${START_CRITICAL} == "yes" ]] && return 0
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mkfifo "${svcdir}/exclusive/${service}" 2> /dev/null
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}
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# void end_service(service, exitcode)
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#
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# stops executing a exclusive region and
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# wakes up anybody who is waiting for the exclusive region
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#
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end_service() {
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local service="$1" exitstatus="$2"
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[[ -z ${service} ]] && return
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# if we are doing critical services, there is no fifo
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[[ ${START_CRITICAL} == "yes" ]] && return
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if [[ -n ${exitstatus} ]] ; then
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echo "${exitstatus}" > "${svcdir}/exitcodes/${service}"
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fi
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# move the fifo to a unique name so no-one is waiting for it
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local fifo="${svcdir}/exclusive/${service}"
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if [[ -e ${fifo} ]] ; then
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local tempname="${fifo}.$$"
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mv -f "${fifo}" "${tempname}"
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# wake up anybody that was waiting for the fifo
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touch "${tempname}"
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# We dont need the fifo anymore
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rm -f "${tempname}"
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fi
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}
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# int wait_service(service)
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#
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# If a service has started, or a fifo does not exist return 0
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# Otherwise, wait until we get an exit code via the fifo and return
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# that instead.
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wait_service() {
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local service="$1"
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local fifo="${svcdir}/exclusive/${service}"
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[[ ${START_CRITICAL} == "yes" || ${STOP_CRITICAL} == "yes" ]] && return 0
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[[ ! -e ${fifo} ]] && return 0
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# This will block until the service fifo is touched
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# Otheriwse we don't block
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local tmp=$( < "${fifo}" &>/dev/null )
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local exitstatus=$( < "${svcdir}/exitcodes/${service}" )
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return "${exitstatus}"
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}
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# int start_service(service)
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#
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# Start 'service' if it is not already running.
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#
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start_service() {
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local service="$1"
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[[ -z ${service} ]] && return 1
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if [[ ! -e "/etc/init.d/${service}" ]] ; then
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mark_service_stopped "${service}"
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return 1
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fi
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service_starting "${service}" && return 0
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service_started "${service}" && return 0
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service_inactive "${service}" && return 1
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if is_fake_service "${service}" "${SOFTLEVEL}" ; then
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mark_service_started "${service}"
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return 0
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fi
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begin_service "${service}" || return 0
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if [[ ${RC_PARALLEL_STARTUP} != "yes" || \
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${START_CRITICAL} == "yes" ]] ; then
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# if we can not start the services in parallel
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# then just start it and return the exit status
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( "/etc/init.d/${service}" start )
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retval=$?
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end_service "${service}" "${retval}"
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return "${retval}"
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else
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# if parallel startup is allowed, start it in background
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(
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"/etc/init.d/${service}" start
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retval=$?
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end_service "${service}" "${retval}"
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) &
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return 0
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fi
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| 385 |
}
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| 386 |
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# int stop_service(service)
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#
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# Stop 'service' if it is not already running.
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#
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stop_service() {
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local service="$1"
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[[ -z ${service} ]] && return 1
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| 394 |
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| 395 |
if [[ ! -e "/etc/init.d/${service}" ]] ; then
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mark_service_stopped "${service}"
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return 0
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fi
|
| 399 |
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| 400 |
service_stopping "${service}" && return 0
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| 401 |
service_stopped "${service}" && return 0
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| 402 |
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| 403 |
local level="${SOFTLEVEL}"
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| 404 |
is_runlevel_stop && level="${OLDSOFTLEVEL}"
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| 405 |
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| 406 |
if is_fake_service "${service}" "${level}" ; then
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| 407 |
mark_service_stopped "${service}"
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return 0
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| 409 |
fi
|
| 410 |
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begin_service "${service}" || return 0
|
| 412 |
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| 413 |
if [[ ${RC_PARALLEL_STARTUP} != "yes" || \
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| 414 |
${STOP_CRITICAL} == "yes" ]] ; then
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| 415 |
# if we can not start the services in parallel
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| 416 |
# then just start it and return the exit status
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| 417 |
( "/etc/init.d/${service}" stop )
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| 418 |
retval=$?
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| 419 |
end_service "${service}" "${retval}"
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| 420 |
return "${retval}"
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| 421 |
else
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| 422 |
# if parallel startup is allowed, start it in background
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| 423 |
(
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| 424 |
( "/etc/init.d/${service}" stop )
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| 425 |
retval=$?
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| 426 |
end_service "${service}" "${retval}"
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| 427 |
) &
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| 428 |
return 0
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| 429 |
fi
|
| 430 |
}
|
| 431 |
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| 432 |
# bool mark_service_starting(service)
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| 433 |
#
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| 434 |
# Mark 'service' as starting.
|
| 435 |
#
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| 436 |
mark_service_starting() {
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| 437 |
[[ -z $1 ]] && return 1
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| 438 |
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| 439 |
ln -sn "/etc/init.d/$1" "${svcdir}/starting/$1" 2>/dev/null || return 1
|
| 440 |
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| 441 |
[[ -f "${svcdir}/inactive/$1" ]] && rm -f "${svcdir}/inactive/$1"
|
| 442 |
[[ -f "${svcdir}/started/$1" ]] && rm -f "${svcdir}/started/$1"
|
| 443 |
return 0
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| 444 |
}
|
| 445 |
|
| 446 |
# bool mark_service_started(service)
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| 447 |
#
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| 448 |
# Mark 'service' as started.
|
| 449 |
#
|
| 450 |
mark_service_started() {
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| 451 |
[[ -z $1 ]] && return 1
|
| 452 |
|
| 453 |
ln -snf "/etc/init.d/$1" "${svcdir}/started/$1"
|
| 454 |
|
| 455 |
[[ -f "${svcdir}/starting/$1" ]] && rm -f "${svcdir}/starting/$1"
|
| 456 |
[[ -f "${svcdir}/inactive/$1" ]] && rm -f "${svcdir}/inactive/$1"
|
| 457 |
[[ -f "${svcdir}/stopping/$1" ]] && rm -f "${svcdir}/stopping/$1"
|
| 458 |
|
| 459 |
return 0
|
| 460 |
}
|
| 461 |
|
| 462 |
# bool mark_service_inactive(service)
|
| 463 |
#
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| 464 |
# Mark service as inactive
|
| 465 |
#
|
| 466 |
mark_service_inactive() {
|
| 467 |
[[ -z $1 ]] && return 1
|
| 468 |
|
| 469 |
ln -snf "/etc/init.d/$1" "${svcdir}/inactive/$1"
|
| 470 |
|
| 471 |
[[ -f "${svcdir}/started/$1" ]] && rm -f "${svcdir}/started/$1"
|
| 472 |
[[ -f "${svcdir}/starting/$1" ]] && rm -f "${svcdir}/starting/$1"
|
| 473 |
[[ -f "${svcdir}/stopping/$1" ]] && rm -f "${svcdir}/stopping/$1"
|
| 474 |
|
| 475 |
return 0
|
| 476 |
}
|
| 477 |
|
| 478 |
# bool mark_service_stopping(service)
|
| 479 |
#
|
| 480 |
# Mark 'service' as stopping.
|
| 481 |
#
|
| 482 |
mark_service_stopping() {
|
| 483 |
[[ -z $1 ]] && return 1
|
| 484 |
|
| 485 |
ln -sn "/etc/init.d/$1" "${svcdir}/stopping/$1" 2>/dev/null || return 1
|
| 486 |
|
| 487 |
[[ -f "${svcdir}/inactive/$1" ]] && rm -f "${svcdir}/inactive/$1"
|
| 488 |
[[ -f "${svcdir}/started/$1" ]] && rm -f "${svcdir}/started/$1"
|
| 489 |
return 0
|
| 490 |
}
|
| 491 |
|
| 492 |
# bool mark_service_stopped(service)
|
| 493 |
#
|
| 494 |
# Mark 'service' as stopped.
|
| 495 |
#
|
| 496 |
mark_service_stopped() {
|
| 497 |
[[ -z $1 ]] && return 1
|
| 498 |
|
| 499 |
[[ -f "${svcdir}/daemons/$1" ]] && rm -f "${svcdir}/daemons/$1"
|
| 500 |
[[ -f "${svcdir}/starting/$1" ]] && rm -f "${svcdir}/starting/$1"
|
| 501 |
[[ -f "${svcdir}/started/$1" ]] && rm -f "${svcdir}/started/$1"
|
| 502 |
[[ -f "${svcdir}/inactive/$1" ]] && rm -f "${svcdir}/inactive/$1"
|
| 503 |
[[ -f "${svcdir}/stopping/$1" ]] && rm -f "${svcdir}/stopping/$1"
|
| 504 |
|
| 505 |
return 0
|
| 506 |
}
|
| 507 |
|
| 508 |
# bool test_service_state(char *service, char *state)
|
| 509 |
#
|
| 510 |
# Returns 0 if the service link exists and points to a file, otherwise 1
|
| 511 |
# If 1 then the link is erased if it exists
|
| 512 |
test_service_state() {
|
| 513 |
[[ -z $1 || -z $2 ]] && return 1
|
| 514 |
|
| 515 |
local f="${svcdir}/$2/$1"
|
| 516 |
|
| 517 |
# Service is in the state requested
|
| 518 |
[[ -L ${f} ]] && return 0
|
| 519 |
|
| 520 |
[[ ! -e ${f} ]] && rm -f "${f}"
|
| 521 |
return 1
|
| 522 |
}
|
| 523 |
|
| 524 |
# bool service_starting(service)
|
| 525 |
#
|
| 526 |
# Returns true if 'service' is starting
|
| 527 |
#
|
| 528 |
service_starting() {
|
| 529 |
test_service_state "$1" "starting"
|
| 530 |
}
|
| 531 |
|
| 532 |
# bool service_started(service)
|
| 533 |
#
|
| 534 |
# Returns true if 'service' is started
|
| 535 |
#
|
| 536 |
service_started() {
|
| 537 |
test_service_state "$1" "started"
|
| 538 |
}
|
| 539 |
|
| 540 |
# bool service_inactive(service)
|
| 541 |
#
|
| 542 |
# Returns true if 'service' is inactive
|
| 543 |
#
|
| 544 |
service_inactive() {
|
| 545 |
test_service_state "$1" "inactive"
|
| 546 |
}
|
| 547 |
|
| 548 |
# bool service_stopping(service)
|
| 549 |
#
|
| 550 |
# Returns true if 'service' is stopping
|
| 551 |
#
|
| 552 |
service_stopping() {
|
| 553 |
test_service_state "$1" "stopping"
|
| 554 |
}
|
| 555 |
|
| 556 |
# bool service_stopped(service)
|
| 557 |
#
|
| 558 |
# Returns true if 'service' is stopped
|
| 559 |
#
|
| 560 |
service_stopped() {
|
| 561 |
[[ -z $1 ]] && return 1
|
| 562 |
|
| 563 |
service_starting "$1" && return 1
|
| 564 |
service_started "$1" && return 1
|
| 565 |
service_stopping "$1" && return 1
|
| 566 |
service_inactive "$1" && return 1
|
| 567 |
|
| 568 |
return 0
|
| 569 |
}
|
| 570 |
|
| 571 |
# bool mark_service_failed(service)
|
| 572 |
#
|
| 573 |
# Mark service as failed for current runlevel. Note that
|
| 574 |
# this is only valid on runlevel change ...
|
| 575 |
#
|
| 576 |
mark_service_failed() {
|
| 577 |
[[ -z $1 || ! -d "${svcdir}/failed" ]] && return 1
|
| 578 |
|
| 579 |
ln -snf "/etc/init.d/$1" "${svcdir}/failed/$1"
|
| 580 |
}
|
| 581 |
|
| 582 |
# bool service_failed(service)
|
| 583 |
#
|
| 584 |
# Return true if 'service' have failed during this runlevel.
|
| 585 |
#
|
| 586 |
service_failed() {
|
| 587 |
[[ -n $1 && -L "${svcdir}/failed/$1" ]]
|
| 588 |
}
|
| 589 |
|
| 590 |
# bool service_started_daemon(char *interface, char *daemon, int index)
|
| 591 |
# Returns 0 if the service started the given daemon
|
| 592 |
# via start-stop-daemon, otherwise 1.
|
| 593 |
# If index is emtpy, then we don't care what the first daemon launched
|
| 594 |
# was, otherwise the daemon must also be at that index
|
| 595 |
service_started_daemon() {
|
| 596 |
local service="$1" daemon="$2" index="${3:-[0-9]*}"
|
| 597 |
local daemonfile="${svcdir}/daemons/${service}"
|
| 598 |
|
| 599 |
[[ ! -e ${daemonfile} ]] && return 1
|
| 600 |
grep -q '^RC_DAEMONS\['"${index}"'\]="'${daemon}'"$' "${daemonfile}"
|
| 601 |
}
|
| 602 |
|
| 603 |
# bool net_service(service)
|
| 604 |
#
|
| 605 |
# Returns true if 'service' is a service controlling a network interface
|
| 606 |
#
|
| 607 |
net_service() {
|
| 608 |
[[ -n $1 && ${1%%.*} == "net" && ${1##*.} != "$1" ]]
|
| 609 |
}
|
| 610 |
|
| 611 |
# bool is_net_up()
|
| 612 |
#
|
| 613 |
# Return true if service 'net' is considered up, else false.
|
| 614 |
#
|
| 615 |
# Notes for RC_NET_STRICT_CHECKING values:
|
| 616 |
# none net is up without checking anything - usefull for vservers
|
| 617 |
# lo Interface 'lo' is counted and if only it is up, net is up.
|
| 618 |
# no Interface 'lo' is not counted, and net is down even with it up,
|
| 619 |
# so there have to be at least one other interface up.
|
| 620 |
# yes All interfaces must be up.
|
| 621 |
is_net_up() {
|
| 622 |
local netcount=0
|
| 623 |
|
| 624 |
case "${RC_NET_STRICT_CHECKING}" in
|
| 625 |
none)
|
| 626 |
return 0
|
| 627 |
;;
|
| 628 |
lo)
|
| 629 |
netcount="$(ls -1 "${svcdir}"/started/net.* 2> /dev/null | \
|
| 630 |
egrep -c "\/net\..*$")"
|
| 631 |
;;
|
| 632 |
*)
|
| 633 |
netcount="$(ls -1 "${svcdir}"/started/net.* 2> /dev/null | \
|
| 634 |
grep -v 'net\.lo' | egrep -c "\/net\..*$")"
|
| 635 |
;;
|
| 636 |
esac
|
| 637 |
|
| 638 |
# Only worry about net.* services if this is the last one running,
|
| 639 |
# or if RC_NET_STRICT_CHECKING is set ...
|
| 640 |
if [[ "${netcount}" -lt 1 || ${RC_NET_STRICT_CHECKING} == "yes" ]] ; then
|
| 641 |
return 1
|
| 642 |
fi
|
| 643 |
|
| 644 |
return 0
|
| 645 |
}
|
| 646 |
|
| 647 |
# bool dependon(service1, service2)
|
| 648 |
#
|
| 649 |
# Does service1 depend (NEED or USE) on service2 ?
|
| 650 |
#
|
| 651 |
dependon() {
|
| 652 |
ineed -t "$1" "$2" || iuse -t "$1" "$2"
|
| 653 |
}
|
| 654 |
|
| 655 |
# string validi(use/after, service)
|
| 656 |
#
|
| 657 |
# This is the main code for valid_after and valid_iuse
|
| 658 |
# No point in writing it twice!
|
| 659 |
valid_i() {
|
| 660 |
local x
|
| 661 |
# Just set to dummy for now (don't know if $svcdir/softlevel exists yet).
|
| 662 |
local mylevel="${BOOTLEVEL}"
|
| 663 |
|
| 664 |
[[ $1 != "after" && $1 != "use" ]] && return 1
|
| 665 |
|
| 666 |
# Cannot be SOFTLEVEL, as we need to know current runlevel
|
| 667 |
[[ -f "${svcdir}/softlevel" ]] && mylevel=$( < "${svcdir}/softlevel" )
|
| 668 |
|
| 669 |
for x in $( i$1 "$2" ) ; do
|
| 670 |
[[ -e "/etc/runlevels/${BOOTLEVEL}/${x}" || \
|
| 671 |
-e "/etc/runlevels/${mylevel}/${x}" || \
|
| 672 |
${x} == "net" ]] \
|
| 673 |
&& echo "${x}"
|
| 674 |
done
|
| 675 |
|
| 676 |
return 0
|
| 677 |
}
|
| 678 |
|
| 679 |
# string valid_iuse(service)
|
| 680 |
#
|
| 681 |
# This will only give the valid use's for the service
|
| 682 |
# (they must be in the boot or current runlevel)
|
| 683 |
#
|
| 684 |
valid_iuse() {
|
| 685 |
valid_i "use" "$1"
|
| 686 |
}
|
| 687 |
|
| 688 |
#string valid_iafter(service)
|
| 689 |
#
|
| 690 |
# Valid services for current or boot rc level that should start
|
| 691 |
# before 'service'
|
| 692 |
#
|
| 693 |
valid_iafter() {
|
| 694 |
valid_i "after" "$1"
|
| 695 |
}
|
| 696 |
|
| 697 |
# string trace_dependencies(service[s])
|
| 698 |
#
|
| 699 |
# Get and sort the dependencies of given service[s].
|
| 700 |
#
|
| 701 |
trace_dependencies() {
|
| 702 |
local -a services=( "$@" ) net_deps
|
| 703 |
local i j net_services x
|
| 704 |
|
| 705 |
if [[ $1 == -* ]]; then
|
| 706 |
deptype="${1/-/}"
|
| 707 |
if net_service "${myservice}" ; then
|
| 708 |
services=( "net" "${myservice}" )
|
| 709 |
else
|
| 710 |
services=( "${myservice}" )
|
| 711 |
fi
|
| 712 |
fi
|
| 713 |
|
| 714 |
net_services=$( cd "${svcdir}"/started; ls net.* 2>/dev/null )
|
| 715 |
# If no net services are running or we only have net.lo up, then
|
| 716 |
# assume we are in boot runlevel or starting a new runlevel
|
| 717 |
if [[ -z ${net_services} || ${net_services} == "net.lo" ]]; then
|
| 718 |
get_net_services() {
|
| 719 |
local runlevel="$1"
|
| 720 |
|
| 721 |
if [[ -d "/etc/runlevels/${runlevel}" ]] ; then
|
| 722 |
cd "/etc/runlevels/${runlevel}"
|
| 723 |
ls net.* 2>/dev/null
|
| 724 |
fi
|
| 725 |
}
|
| 726 |
|
| 727 |
local mylevel="${BOOTLEVEL}"
|
| 728 |
local x=$( get_net_services "${mylevel}" )
|
| 729 |
|
| 730 |
[[ -f "${svcdir}/softlevel" ]] && mylevel=$( < "${svcdir}/softlevel" )
|
| 731 |
[[ ${BOOTLEVEL} != "${mylevel}" ]] && \
|
| 732 |
local x="${x} $( get_net_services "${mylevel}" )"
|
| 733 |
[[ -n ${x} ]] && net_services="${x}"
|
| 734 |
fi
|
| 735 |
|
| 736 |
# Cache the generic "net" depends
|
| 737 |
net_deps=( $( ineed net ) $( valid_iuse net ) )
|
| 738 |
if is_runlevel_start || is_runlevel_stop ; then
|
| 739 |
net_deps=( "${net_deps[@]}" $( valid_iafter net ) )
|
| 740 |
fi
|
| 741 |
|
| 742 |
# OK, this is a topological sort
|
| 743 |
# The bonus about doing it in bash is that we can calculate our sort
|
| 744 |
# order as we calculate our dependencies
|
| 745 |
local -a visited sorted
|
| 746 |
visit_service() {
|
| 747 |
local service="$1" dep x
|
| 748 |
local -a deps
|
| 749 |
|
| 750 |
[[ " ${visited[@]} " == *" ${service} "* ]] && return
|
| 751 |
visited=( "${visited[@]}" "${service}" )
|
| 752 |
|
| 753 |
if [[ -n ${deptype} ]] ; then
|
| 754 |
deps=( $( "${deptype}" "${service}" ) )
|
| 755 |
else
|
| 756 |
deps=( $( ineed "${service}" ) $( valid_iuse "${service}" ) )
|
| 757 |
if is_runlevel_start || is_runlevel_stop ; then
|
| 758 |
deps=( "${deps[@]}" $( valid_iafter "${service}" ) )
|
| 759 |
fi
|
| 760 |
|
| 761 |
# If we're a net service, we have to get deps for ourself
|
| 762 |
# and the net service as we're both
|
| 763 |
net_service "${service}" && deps=( "${deps[@]}" "${net_deps[@]}" )
|
| 764 |
|
| 765 |
x=" ${deps[@]} "
|
| 766 |
deps=( "${deps[@]}" ${x// net / ${net_services} } )
|
| 767 |
fi
|
| 768 |
|
| 769 |
services=( "${services[@]}" "${deps[@]}" )
|
| 770 |
for dep in ${deps[@]}; do
|
| 771 |
visit_service "${dep}"
|
| 772 |
done
|
| 773 |
sorted=( "${sorted[@]}" "${service}" )
|
| 774 |
}
|
| 775 |
|
| 776 |
for (( i=0; i<${#services[@]}; i++)); do
|
| 777 |
visit_service "${services[i]}"
|
| 778 |
done
|
| 779 |
|
| 780 |
services=( "${sorted[@]}" )
|
| 781 |
|
| 782 |
if [[ -n ${deptype} ]] ; then
|
| 783 |
# If deptype is set, we do not want the name of this service
|
| 784 |
x=" ${services[@]} "
|
| 785 |
services=( ${x// ${myservice} / } )
|
| 786 |
|
| 787 |
# If its a net service, do not include "net"
|
| 788 |
if net_service "${myservice}" ; then
|
| 789 |
x=" ${services[@]} "
|
| 790 |
sorted=( ${services// net / } )
|
| 791 |
fi
|
| 792 |
fi
|
| 793 |
|
| 794 |
echo "${services[@]}"
|
| 795 |
}
|
| 796 |
|
| 797 |
# bool query_before(service1, service2)
|
| 798 |
#
|
| 799 |
# Return true if 'service2' should be started *before*
|
| 800 |
# service1.
|
| 801 |
#
|
| 802 |
query_before() {
|
| 803 |
local x list
|
| 804 |
local netservice="no"
|
| 805 |
|
| 806 |
[[ -z $1 || -z $2 ]] && return 1
|
| 807 |
|
| 808 |
list=$( trace_dependencies "$1" )
|
| 809 |
|
| 810 |
net_service "$2" && netservice="yes"
|
| 811 |
|
| 812 |
for x in ${list} ; do
|
| 813 |
[[ ${x} == "$2" ]] && return 0
|
| 814 |
|
| 815 |
# Also match "net" if this is a network service ...
|
| 816 |
[[ ${netservice} == "yes" && ${x} == "net" ]] && return 0
|
| 817 |
done
|
| 818 |
|
| 819 |
return 1
|
| 820 |
}
|
| 821 |
|
| 822 |
# vim:ts=4
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