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#!/bin/bash
#Need to be copied to hooks/<HOOKS_VER>/start/post
#TODO: All gluster and samba paths are assumed for fedora like systems.
#Some efforts are required to make it work on other distros.
#The preferred way of creating a smb share of a gluster volume has changed.
#The old method was to create a fuse mount of the volume and share the mount
#point through samba.
#
#New method eliminates the requirement of fuse mount and changes in fstab.
#glusterfs_vfs plugin for samba makes call to libgfapi to access the volume.
#
#This hook script automagically creates shares for volume on every volume start
#event by adding the entries in smb.conf file and sending SIGHUP to samba.
#
#In smb.conf:
#glusterfs vfs plugin has to be specified as required vfs object.
#Path value is relative to the root of gluster volume;"/" signifies complete
#volume.
PROGNAME="Ssamba-start"
OPTSPEC="volname:"
VOL=
CONFIGFILE=
LOGFILEBASE=
PIDDIR=
function parse_args () {
ARGS=$(getopt -l $OPTSPEC -name $PROGNAME $@)
eval set -- "$ARGS"
while true; do
case $1 in
--volname)
shift
VOL=$1
;;
*)
shift
break
;;
esac
shift
done
}
function find_config_info () {
cmdout=`smbd -b | grep smb.conf`
if [ $? -ne 0 ];then
echo "Samba is not installed"
exit 1
fi
CONFIGFILE=`echo $cmdout | awk {'print $2'}`
PIDDIR=`smbd -b | grep PIDDIR | awk {'print $2'}`
LOGFILEBASE=`smbd -b | grep 'LOGFILEBASE' | awk '{print $2}'`
}
function add_samba_share () {
volname=$1
STRING="\n[gluster-$volname]\n"
STRING+="comment = For samba share of volume $volname\n"
STRING+="vfs objects = glusterfs\n"
STRING+="glusterfs:volume = $volname\n"
STRING+="glusterfs:logfile = $LOGFILEBASE/glusterfs-$volname.%%M.log\n"
STRING+="glusterfs:loglevel = 7\n"
STRING+="path = /\n"
STRING+="read only = no\n"
STRING+="guest ok = yes\n"
printf "$STRING" >> ${CONFIGFILE}
}
function sighup_samba () {
pid=`cat ${PIDDIR}/smbd.pid`
if [ "x$pid" != "x" ]
then
kill -HUP "$pid";
else
/etc/init.d/smb condrestart
fi
}
function get_smb () {
volname=$1
uservalue=
usercifsvalue=$(grep user.cifs /var/lib/glusterd/vols/"$volname"/info |\
cut -d"=" -f2)
usersmbvalue=$(grep user.smb /var/lib/glusterd/vols/"$volname"/info |\
cut -d"=" -f2)
if [[ $usercifsvalue = "disable" || $usersmbvalue = "disable" ]]; then
uservalue="disable"
fi
echo "$uservalue"
}
parse_args $@
if [ $(get_smb "$VOL") = "disable" ]; then
exit 0
fi
#Find smb.conf, smbd pid directory and smbd logfile path
find_config_info
if ! grep --quiet "\[gluster-$VOL\]" ${CONFIGFILE} ; then
add_samba_share $VOL
sighup_samba
fi
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