A hotplug script for OpenWRT systems to mount and unmount a remote CIFS partition

21-netmount

#!/bin/sh

# Place this file on /etc/hotplug.d/iface. Example entry (on /etc/config/fstab):
#------------------------------------------------------------
#config netmount
#        option target '/mnt'
#        option src '//ADDRESS/RESOURCE'
#        option fstype 'cifs' #or nfs
## don't use qoutes inside the string, else the qoutes, they will not be removed
#        option options 'user=USER,password=PASSWORD'
#        option enabled '1'
#        option network 'br-lan'
#------------------------------------------------------------
# Delete these comments if you want to preserve space on /overlay

. /lib/functions.sh

network_mount() {
    local config="$1"
    local enabled
    local target
    local src
    local options
    local network
    local fstype
  
    config_get_bool enabled "$config" enabled 0

    for opt in target src options network fstype
    do
        config_get "$opt" "$config" "$opt"
    done

    if [ "$enabled" = 1 -a "$INTERFACE" = "$network" ]
    then
        if [ "$ACTION" = "ifup" ]
        then
            logger "NetMount: $ACTION: Mounting $src in $target"
            mount -t $fstype $src $target -o "$options"
        elif [ "$ACTION" = "ifdown" ]
        then
            logger "NetMount: $ACTION: Umounting $src from $target"
            umount $target
        elif [ "$ACTION" = "ifupdate" ]
        then
            logger "NetMount: $ACTION: DHCP renew. Leaving $src mounted in $target"
        else
            logger "NetMount: Unknown action $ACTION: Leaving $src mounted in $target"
        fi
    fi
}

config_load fstab
config_foreach network_mount netmount