ddwrt-mount-usb-drives.sh

#!/bin/sh
#DEBUG=; set -x # comment/uncomment to disable/enable debug mode

#           name: ddwrt-mount-usb-drives.sh
#        version: 1.2.3, 29-jun-2019, by eibgrad
#        purpose: mount usb drive(s)/partition(s)
#    script type: startup (autostart)
#  compatibility: ext2, ext3, ext4, fat, fat32
#   installation:
#     1. enable jffs2 (administration->jffs2)
#     2. enable syslogd (services->services->system log)
#     3. set services->usb->usb support options as follows:
#          core usb support = enable
#          usb storage support = enable
#          automatic drive mount = disable
#     4. install usb drive(s) and reboot
#     5. use shell (telnet/ssh) and blkid utility to determine uuid(s)
#     6. use shell (telnet/ssh) to execute one of the following commands:
#          curl -kLs bit.ly/ddwrt-installer|tr -d '\r'|sh -s VDZ32r2D startup
#        or
#          wget -qO - bit.ly/ddwrt-installer|tr -d '\r'|sh -s VDZ32r2D startup
#     7. use vi editor to modify script w/ your preferred options and
#              mounting points:
#          vi /jffs/etc/config/ddwrt-mount-usb-drives.startup
#     8. reboot
#    limitations:
#      - ntfs is NOT supported at this time
{
# ------------------------------ BEGIN OPTIONS ------------------------------- #

# read/write access, no special devices, don't update access time
OPT="-o rw,nodev,noatime" # uncomment/comment to enable/disable

# check (and repair as necessary) all usb partitions
CLEAN_PARTITIONS= # uncomment/comment to enable/disable

# allow other startup scripts (if any) to run concurrently
#DAEMONIZE= # uncomment/comment to enable/disable

# ------------------------------- END OPTIONS -------------------------------- #
add_mounts() {
# ------------------------------- BEGIN MOUNTS ------------------------------- #

# create mounting point(s) (/opt is pre-defined by the system)
mkdir -p /mnt/dropbox

# mount each partition to its preferred mounting point based on UUID
mount $(findfs UUID=576f3b60-5cb7-4f5d-9800-c309778c2af8) $OPT /opt
mount $(findfs UUID=427cb076-6681-4a15-9e27-4b90aaf8de3e) $OPT /mnt/dropbox

# alternate method:
#   mount each partition to its preferred mounting point based on its LABEL;
#   this requires partitions to be uniquely labeled across all devices
#
#   for linux filesystems only (ext*): if available in your build, use the
#   e2label utility to relabel partitions as necessary (beware, this will
#   likely change its UUID too), otherwise use the gparted utility found on
#   most linux distros

#mount $(findfs LABEL=optware) $OPT /opt
#mount $(findfs LABEL=dropbox) $OPT /mnt/dropbox

# -------------------------------- END MOUNTS -------------------------------- #
:;}
# ---------------------- DO NOT CHANGE BELOW THIS LINE ----------------------- #

# function is_mounted( partition )
is_mounted() { df | grep -Eq "^$1[[:space:]]+"; }

# function findfs( LABEL=<label>|UUID=<uuid> )
findfs() { blkid | sed 's/"//g' | grep -wm1 "$1" | cut -d ':' -f 1; }

if [ "$(which modprobe)" ]; then
    modprobe ext4
    modprobe msdos
else
    insmod crc16 && insmod mbcache && insmod jbd2 && insmod ext4
    insmod fat && insmod vfat
fi

# check (and repair as necessary) usb partitions (ext* only)
if [ ${CLEAN_PARTITIONS+x} ]; then
    for part in /dev/sd*; do
        if $(echo $part | grep -Eq '[0-9]+$'); then
            is_mounted $part || e2fsck -p $part 2>/dev/null
        fi
    done
fi

# add mounts
add_mounts

exit 0

} 2>&1 | logger $([ ${DEBUG+x} ] && echo "-p user.debug") \
    -t $(echo $(basename $0) | grep -Eo '^.{0,23}')[$$] \
    $([ ${DAEMONIZE+x} ] && echo &)