Import from science overlay, version bump

(Portage version: 2.2.0_alpha141/cvs/Linux x86_64, signed Manifest commit with key 0x13CB1360)

1 files changed, 191 insertions, 0 deletions

diff --git a/net-fs/cvmfs/files/cvmfsd.initd b/net-fs/cvmfs/files/cvmfsd.initd
new file mode 100644
index 000000000000..bc0c604dd95d
--- /dev/null
+++ b/net-fs/cvmfs/files/cvmfsd.initd
@@ -0,0 +1,191 @@
+#!/sbin/runscript
+
+. /etc/cvmfs/server.conf
+[[ -f /etc/cvmfs/server.local ]] && . /etc/cvmfs/server.local
+
+extra_commands="checkconfig"
+extra_started_commands="pause flush resume"
+
+description="Background daemon that writes the cvmfs character device into a log file"
+description_checkconfig="Check configuration file validity"
+description_pause="Pause the transactions (not a full stop)"
+description_flush="Flush the CernVM-FS change log"
+description_resume="Resume transactions after a pause"
+
+pidfile="/var/run/cvmfsd.pid"
+subsysfile="/var/lock/subsys/cvmfsd"
+
+checkconfig() {
+    local var ret=0
+    for var in SHADOW_DIR PUB_DIR LOG_FILE;  do
+	eval value=\$$var
+	if [[ -z ${value} ]]; then
+	    eerror "You need to set a value for ${var} in /etc/cvmfs/server.local"
+	    ret=$((ret + $?))
+	fi
+    done
+    return ${ret}
+}
+
+depend() {
+    after localmount
+    use net
+}
+
+# returns: 0 (stopped), 1 (running), 2 (paused)
+check_status() {
+    if [ -f ${pidfile} ]; then
+	[ $(cat /sys/fs/redirfs/filters/cvmfsflt/lockdown) -eq 1 ] && return 2
+	return 1
+    fi
+    return 0
+}
+
+# FIXME: could we use start-stop-daemon instead of listen/unlisten?
+
+listen() {
+    ebegin "Starting journal writer"
+    nohup cat /dev/cvmfs >> "${LOG_FILE}" 2>/dev/null </dev/null &
+    [ $? -eq 0 ] && echo $! > ${pidfile}
+    eend $?
+}
+
+unlisten() {
+    ebegin "Stopping journal writer"
+    local pid=$(cat ${pidfile})
+    kill ${pid}
+    local killed=0 retries=0
+    while [ ${killed} -eq 0 ]; do
+	sleep 1
+	kill -0 ${pid} 2>/dev/null
+	killed=$?
+	retries=$((retries + 1))
+	[ ${retries} -eq 3 ] && kill -9 ${pid}
+    done
+    eend $?
+}
+
+start() {
+    checkconfig || return 1
+
+    if [ ! -d ${SHADOW_DIR} ]; then
+	eerror "Missing ${SHADOW_DIR}"
+	return 1
+    fi
+    
+    if mkdir -p "$(echo "${LOG_FILE}" | grep -o '\([^\/]*\/\)*')"; then
+	eerror "Could not create file system journal in ${LOG_FILE}"
+	return 1
+    fi
+    
+    ebegin "Loading cvmfsflt kernel module"
+    modprobe -q redirfs && modprobe -q cvmfsflt
+    eend $? || return 1
+   
+    ebegin "Linking to character device"
+    rm -f /dev/cvmfs
+    mknod /dev/cvmfs c $(awk '/cvmfs/ {print $1}' /proc/devices) 0 > /dev/null 2>&1
+    chmod 0600 /dev/cvmfs
+    eend $? || return 1
+    
+    ebegin "Setting filter path to ${SHADOW_DIR}"
+    echo -n "a:i:${SHADOW_DIR}" > /sys/fs/redirfs/filters/cvmfsflt/paths
+    eend $? || return 1
+    
+    listen || return 1
+    ebegin "Starting CernVM-FS daemon"
+    touch ${subsysfile}
+    eend $?
+}
+
+
+pause() {
+    check_status
+    local ret=$?
+    if [ ${ret} -eq 0 ]; then
+	eerror "CernVM-FS daemon is stopped"
+	return 1
+    fi
+    if [ ${ret} -eq 2 ]; then
+	ewarn "CernVM-FS daemon is already paused"
+	return 1
+    fi
+   
+   ebegin "Locking down ${SHADOW_DIR}"
+   echo -n "1" > /sys/fs/redirfs/filters/cvmfsflt/lockdown
+   eend $? || return 1
+
+   ebegin "Waiting for pending operations on ${SHADOW_DIR}"
+   local nowops noll
+   while true;  do
+       nowops=$(cat /sys/fs/redirfs/filters/cvmfsflt/nowops)
+       [ $? -ne 0 ] && eend 1 && return 1
+       [ ${nowops} -eq 0 ] && break
+       sleep 1
+   done
+   eend $?
+   
+   ebegin "Waiting for pending messages in call buffer"
+   local noll
+   while true; do
+       noll=$(cat /sys/fs/redirfs/filters/cvmfsflt/noll)
+       [ $? -ne 0 ] && eend 1 && return 1
+       [ ${noll} -eq 0 ] && break
+       sleep 1
+   done
+   eend $? || return 1
+   unlisten || return 1
+   mark_service_stopped cvmfsd
+}
+
+resume() {
+   check_status
+   local ret=$?
+   if [ ${ret} -eq 0 ]; then
+       eerror "CernVM-FS daemon is stopped"
+       return 1
+   fi
+   if [ $retval -eq 1 ]; then
+       ewarn "CernVM-FS daemon is already running"
+       return 1
+   fi
+   
+   listen || return 1
+   
+   ebegin "Open up ${SHADOW_DIR}"
+   echo -n "0" > /sys/fs/redirfs/filters/cvmfsflt/lockdown
+   eend $? || return 1
+   mark_service_started cvmfsd
+}
+
+
+stop() {
+    check_status
+    local ret=$?
+    if [ ${ret} -eq 0 ]; then
+	ewarn "CernVM-FS daemon is already stopped"
+	return 2
+    fi
+   
+    if [ ${ret} -eq 1 ]; then
+	pause
+	ret=$?
+	[ ${ret} -ne 0 ] && return ${ret}
+    fi
+   
+    ebegin "Unloading cvmfsflt kernel module"
+    echo -n "c\0" > /sys/fs/redirfs/filters/cvmfsflt/paths || ret=$((ret + 1))
+    echo -n "1\0" > /sys/fs/redirfs/filters/cvmfsflt/unregister || ret=$((ret + 1))
+    rmmod cvmfsflt || ret=$((ret + 1))
+    eend ${ret} || return 1
+   
+    ebegin "Shutting down CernVM-FS daemon"
+    rm -f ${pidfile} ${subsysfile}
+    eend $?
+}
+
+flush() {
+   ebegin "Flushing CernVM-FS server file system change log"
+   cat /dev/null > "${LOG_FILE}"
+   eend $?
+}