Rewrite the core parts in C. We now provide librc so other programs can

query runlevels, services and state without using bash. We also provide
libeinfo so other programs can easily use our informational functions.

As such, we have dropped the requirement of using bash as the init script
shell. We now use /bin/sh and have strived to make the scripts as portable
as possible. Shells that work are bash and dash. busybox works provided
you disable s-s-d. If you have WIPE_TMP set to yes in conf.d/bootmisc you
should disable find too.
zsh and ksh do not work at this time.

Networking support is currently being re-vamped also as it was heavily bash
array based. As such, a new config format is available like so
config_eth0="1.2.3.4/24 5.6.7.8/16"
or like so
config_eth0="'1.2.3.4 netmask 255.255.255.0' '5.6.7.8 netmask 255.255.0.0'"

We will still support the old bash array format provided that /bin/sh IS
a link it bash.

ChangeLog for baselayout-1 can be found in our SVN repo.

1 files changed, 212 insertions, 0 deletions

diff --git a/net.Linux/clip.sh b/net.Linux/clip.sh
new file mode 100644
index 00000000..d3ec4fd8
--- /dev/null
+++ b/net.Linux/clip.sh
@@ -0,0 +1,212 @@
+# Copyright 2005-2007 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+clip_depend() {
+	program /usr/sbin/atmsigd
+    before interface
+}
+
+_config_vars="$_config_vars clip"
+
+# This starts a service. Albeit atmsigd, ilmid and atmarpd do allow for back-
+# grounding through the -b option, its usage causes them to be sensible to
+# SIGHUP, which is sent to all daemons when console detaches right after
+# startup. This is probably due to the fact that these programs don't detach
+# themself from the controlling terminal when backgrounding... The only way I
+# see to overcame this is to use the --background option in start-stop-daemon,
+# which is reported as a "last resort" method, but it acts correctly about this.
+atmclip_svc_start() {
+    ebegin "Starting $2 Daemon ($1)"
+    start-stop-daemon --start \
+		--background \
+		--make-pidfile --pidfile "/var/run/$1.pid" \
+		--exec "/usr/sbin/$1" -- -l syslog
+    eend $?
+}
+
+atmclip_svcs_start() {
+    einfo "First CLIP instance: starting ATM CLIP daemons"
+    eindent
+
+    if [ "${clip_full:-yes}" = "yes" ]; then
+		atmclip_svc_start atmsigd "Signaling" && \
+		atmclip_svc_start ilmid	  "Integrated Local Management Interface" && \
+		atmclip_svc_start atmarpd "Address Resolution Protocol"
+    else
+		atmclip_svc_start atmarpd "Address Resolution Protocol"
+    fi
+
+    local r=$?
+
+    eoutdent
+    return ${r}
+}
+
+atmclip_svc_stop() {
+    ebegin "Stopping $2 Daemon ($1)"
+    start-stop-daemon --stop --quiet \
+		--pidfile "/var/run/$1.pid" \
+		--exec "/usr/sbin/$1"
+    eend $?
+}
+
+atmclip_svcs_stop() {
+    einfo "Last CLIP instance: stopping ATM CLIP daemons"
+    eindent
+
+    # Heartake operation!
+    sync
+
+    atmclip_svc_stop atmarpd "Address Resolution Protocol"
+    if [ "${clip_full:-yes}" = "yes" ]; then
+		atmclip_svc_stop ilmid "Integrated Local Management Interface"
+		atmclip_svc_stop atmsigd "Signaling"
+    fi
+
+    eoutdent
+}
+
+are_atmclip_svcs_running() {
+    is_daemon_running atmarpd || return 1
+    if [[ ${clip_full:-yes} == "yes" ]]; then
+		is_daemon_running ilmid	  || return 1
+		is_daemon_running atmsigd || return 1
+    fi
+
+    return 0
+}
+
+atmarp() {
+    /usr/sbin/atmarp "$@"
+}
+
+clip_pre_start() {
+	eval $(_get_array "clip_${IFVAR}")
+	[ -z "$@" ] && return 0
+
+    if [ ! -r /proc/net/atm/arp ] ; then
+		modprobe clip && sleep 2
+		if [ ! -r /proc/net/atm/arp ] ; then
+	    	eerror "You need first to enable kernel support for ATM CLIP"
+	    	return 1
+		fi
+    fi
+	
+    local started_here=
+    if ! are_atmclip_svcs_running ; then
+		atmclip_svcs_start || return 1
+		started_here=1
+    fi
+
+    if ! _exists ; then
+		ebegin "Creating CLIP interface ${IFACE}"
+		atmarp -c "${IFACE}"
+		if ! eend $? ; then
+			[ -z "${started_here}" ] && atmclip_svcs_stop
+	    	return 1
+		fi
+    fi
+
+    return 0
+}
+
+clip_post_start() {
+	eval $(_get_array "clip_${IFVAR}")
+	[ -z "$@" ] && return 0
+
+	are_atmclip_svcs_running || return 1
+
+    # The atm tools (atmarpd?) are silly enough that they would not work with
+    # iproute2 interface setup as opposed to the ifconfig one.
+    # The workaround is to temporarily toggle the interface state from up
+    # to down and then up again, without touching its address. This (should)
+    # work with both iproute2 and ifconfig.
+    _down
+    _up
+
+    # Now the real thing: create a PVC with our peer(s).
+    # There are cases in which the ATM interface is not yet
+    # ready to establish new VCCs. In that cases, atmarp would
+    # fail. Here we allow 10 retries to happen every 2 seconds before
+    # reporting problems. Also, when no defined VC can be established,
+    # we stop the ATM daemons.
+    local has_failures= i=
+	for i in "$@" ; do
+		set -- ${i}
+		local peerip="$1"; shift
+		local ifvpivci="$1"; shift
+		ebegin "Creating PVC ${ifvpivci} for peer ${peerip}"
+
+		local nleftretries=10 emsg= ecode=
+		while [ ${nleftretries} -gt 0 ] ; do
+			nleftretries=$((${nleftretries} - 1))
+	    	emsg="$(atmarp -s "${peerip}" "${ifvpivci}" "$@" 2>&1)"
+	    	ecode=$? && break
+	    	sleep 2
+		done
+
+		if ! eend ${ecode} ; then
+	    	eerror "Creation failed for PVC ${ifvpivci}: ${emsg}"
+	    	has_failures=1
+		fi
+    done
+
+    if [ -n "${has_failures}" ]; then
+		clip_pre_stop "${iface}"
+		clip_post_stop "${iface}"
+		return 1
+    else
+		return 0
+    fi
+}
+
+clip_pre_stop() {
+    are_atmclip_svcs_running || return 0
+
+	# We remove all the PVCs which may have been created by
+	# clip_post_start for this interface. This shouldn't be
+	# needed by the ATM stack, but sometimes I got a panic
+	# killing CLIP daemons without previously vacuuming
+	# every active CLIP PVCs.
+	# The linux 2.6's ATM stack is really a mess...
+	local itf= t= encp= idle= ipaddr= left=
+	einfo "Removing PVCs on this interface"
+	eindent
+	{
+		read left && \
+		while read itf t encp idle ipaddr left ; do
+			if [ "${itf}" = "${IFACE}" ]]; then
+				ebegin "Removing PVC to ${ipaddr}"
+				atmarp -d "${ipaddr}"
+				eend $?
+			fi
+		done
+	} < /proc/net/atm/arp
+	eoutdent
+}
+
+# Here we should teorically delete the interface previously created in the
+# clip_pre_start function, but there is no way to "undo" an interface creation.
+# We can just leave the interface down. "ifconfig -a" will still list it...
+# Also, here we can stop the ATM CLIP daemons if there is no other CLIP PVC
+# outstanding. We check this condition by inspecting the /proc/net/atm/arp file.
+clip_post_stop() {
+    are_atmclip_svcs_running || return 0
+
+    local itf= left= hasothers=
+    {
+		read left && \
+		while read itf left ; do
+	    	if [ "${itf}" != "${IFACE}" ] ; then
+				hasothers=1
+				break
+	    	fi
+		done
+    } < /proc/net/atm/arp
+
+    if [ -z "${hasothers}" ] ; then
+		atmclip_svcs_stop || return 1
+    fi
+}
+
+# vim: set ts=4 :