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337 lines
6.5 KiB
337 lines
6.5 KiB
#!/bin/sh
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cmd="$1"
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shift
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if [ "$cmd" = "name" ]; then
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echo "UBI"
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return 0
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fi
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test -e /sys/class/ubi/version || return 0
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read -r ubiver < /sys/class/ubi/version
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[ "$ubiver" = "1" ] || return 1
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test -e /sys/devices/virtual/ubi || return 0
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ubidev=$(ls -1 /sys/devices/virtual/ubi | head -n 1)
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read -r ebsize < "/sys/devices/virtual/ubi/${ubidev}/eraseblock_size"
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. /lib/functions/uvol.sh
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freebytes() {
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read -r availeb < "/sys/devices/virtual/ubi/${ubidev}/avail_eraseblocks"
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echo $((availeb * ebsize))
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}
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totalbytes() {
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read -r totaleb < "/sys/devices/virtual/ubi/${ubidev}/total_eraseblocks"
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echo $((totaleb * ebsize))
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}
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getdev() {
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local voldir volname
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for voldir in "/sys/devices/virtual/ubi/${ubidev}/${ubidev}_"*; do
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read -r volname < "${voldir}/name"
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case "$volname" in
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uvol-[rw][owpd]-$1)
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basename "$voldir"
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break
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;;
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*)
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continue
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;;
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esac
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done
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}
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vol_is_mode() {
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local voldev="$1"
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local volname
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read -r volname < "/sys/devices/virtual/ubi/${ubidev}/${voldev}/name"
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case "$volname" in
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uvol-$2-*)
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return 0
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;;
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esac
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return 1
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}
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getstatus() {
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local voldev
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voldev="$(getdev "$@")"
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[ "$voldev" ] || return 2
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vol_is_mode "$voldev" wo && return 22
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vol_is_mode "$voldev" wp && return 16
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vol_is_mode "$voldev" wd && return 1
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vol_is_mode "$voldev" ro && [ ! -e "/dev/ubiblock${voldev:3}" ] && return 1
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return 0
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}
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getsize() {
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local voldev
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voldev="$(getdev "$@")"
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[ "$voldev" ] || return 2
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cat "/sys/devices/virtual/ubi/${ubidev}/${voldev}/data_bytes"
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}
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getuserdev() {
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local voldev
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voldev="$(getdev "$@")"
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[ "$voldev" ] || return 2
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if vol_is_mode "$voldev" ro ; then
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echo "/dev/ubiblock${voldev:3}"
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elif vol_is_mode "$voldev" rw ; then
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echo "/dev/$voldev"
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fi
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}
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mkubifs() {
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local tmp_mp
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tmp_mp="$(mktemp -d)"
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mount -t ubifs "$1" "$tmp_mp" || return $?
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umount "$tmp_mp" || return $?
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rmdir "$tmp_mp" || return $?
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return 0
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}
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createvol() {
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local mode ret voldev
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voldev=$(getdev "$@")
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[ "$voldev" ] && return 17
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case "$3" in
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ro|wo)
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mode=wo
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;;
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rw)
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mode=wp
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;;
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*)
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return 22
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;;
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esac
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ubimkvol "/dev/$ubidev" -N "uvol-$mode-$1" -s "$2" || return $?
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ret=$?
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[ $ret -eq 0 ] || return $ret
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voldev="$(getdev "$@")"
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ubiupdatevol -t "/dev/$voldev" || return $?
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[ "$mode" = "wp" ] || return 0
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mkubifs "/dev/$voldev" || return $?
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uvol_uci_add "$1" "/dev/$voldev" "rw"
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ubirename "/dev/$ubidev" "uvol-wp-$1" "uvol-wd-$1" || return $?
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}
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removevol() {
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local voldev volnum
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voldev=$(getdev "$@")
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[ "$voldev" ] || return 2
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vol_is_mode "$voldev" rw && return 16
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vol_is_mode "$voldev" ro && return 16
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volnum="${voldev#${ubidev}_}"
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ubirmvol "/dev/$ubidev" -n "$volnum" || return $?
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uvol_uci_remove "$1"
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uvol_uci_commit "$1"
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}
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block_hotplug() {
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export ACTION="$1"
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export DEVNAME="$2"
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/sbin/block hotplug
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}
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activatevol() {
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local voldev
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voldev="$(getdev "$@")"
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[ "$voldev" ] || return 2
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vol_is_mode "$voldev" rw && return 0
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vol_is_mode "$voldev" ro && return 0
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vol_is_mode "$voldev" wo && return 22
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vol_is_mode "$voldev" wp && return 16
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uvol_uci_commit "$1"
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if vol_is_mode "$voldev" rd; then
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ubirename "/dev/$ubidev" "uvol-rd-$1" "uvol-ro-$1" || return $?
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ubiblock --create "/dev/$voldev" || return $?
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return 0
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elif vol_is_mode "$voldev" wd; then
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ubirename "/dev/$ubidev" "uvol-wd-$1" "uvol-rw-$1" || return $?
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block_hotplug add "$voldev"
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return 0
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fi
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}
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disactivatevol() {
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local voldev
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voldev="$(getdev "$@")"
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[ "$voldev" ] || return 2
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vol_is_mode "$voldev" rd && return 0
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vol_is_mode "$voldev" wd && return 0
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vol_is_mode "$voldev" wo && return 22
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vol_is_mode "$voldev" wp && return 16
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if vol_is_mode "$voldev" ro; then
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/sbin/block umount "ubiblock${voldev:3}"
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ubiblock --remove "/dev/$voldev"
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ubirename "/dev/$ubidev" "uvol-ro-$1" "uvol-rd-$1" || return $?
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return 0
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elif vol_is_mode "$voldev" rw; then
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/sbin/block umount "$voldev"
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ubirename "/dev/$ubidev" "uvol-rw-$1" "uvol-wd-$1" || return $?
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block_hotplug remove "$voldev"
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return 0
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fi
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}
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updatevol() {
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local voldev
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voldev="$(getdev "$@")"
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[ "$voldev" ] || return 2
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[ "$2" ] || return 22
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vol_is_mode "$voldev" wo || return 22
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ubiupdatevol -s "$2" "/dev/$voldev" -
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ubiblock --create "/dev/$voldev"
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uvol_uci_add "$1" "/dev/ubiblock${voldev:3}" "ro"
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ubiblock --remove "/dev/$voldev"
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ubirename "/dev/$ubidev" "uvol-wo-$1" "uvol-rd-$1"
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}
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listvols() {
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local volname volmode volsize
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for voldir in "/sys/devices/virtual/ubi/${ubidev}/${ubidev}_"*; do
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read -r volname < "$voldir/name"
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case "$volname" in
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uvol-[rw][wod]*)
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read -r volsize < "$voldir/data_bytes"
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;;
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*)
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continue
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;;
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esac
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volmode="${volname:5:2}"
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volname="${volname:8}"
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echo "$volname $volmode $volsize"
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done
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}
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bootvols() {
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local volname volmode volsize voldev fstype
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for voldir in "/sys/devices/virtual/ubi/${ubidev}/${ubidev}_"*; do
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read -r volname < "$voldir/name"
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voldev="$(basename "$voldir")"
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fstype=
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case "$volname" in
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uvol-ro-*)
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ubiblock --create "/dev/$voldev" || return $?
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;;
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*)
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continue
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;;
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esac
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volmode="${volname:5:2}"
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volname="${volname:8}"
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done
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}
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detect() {
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local volname voldev volmode voldev fstype tmpdev=""
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for voldir in "/sys/devices/virtual/ubi/${ubidev}/${ubidev}_"*; do
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read -r volname < "$voldir/name"
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voldev="$(basename "$voldir")"
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fstype=
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case "$volname" in
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uvol-r[od]-*)
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if ! [ -e "/dev/ubiblock${voldev:3}" ]; then
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ubiblock --create "/dev/$voldev" || return $?
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fi
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case "$volname" in
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uvol-rd-*)
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tmpdev="$tmpdev $voldev"
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;;
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esac
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;;
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*)
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continue
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;;
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esac
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volmode="${volname:5:2}"
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volname="${volname:8}"
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done
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uvol_uci_init
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for voldir in "/sys/devices/virtual/ubi/${ubidev}/${ubidev}_"*; do
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read -r volname < "$voldir/name"
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voldev="$(basename "$voldir")"
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case "$volname" in
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uvol-[rw][wod]*)
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true
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;;
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*)
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continue
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;;
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esac
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volmode="${volname:5:2}"
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volname="${volname:8}"
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case "$volmode" in
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"ro" | "rd")
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uvol_uci_add "$volname" "/dev/ubiblock${voldev:3}" "ro"
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;;
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"rw" | "wd")
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uvol_uci_add "$volname" "/dev/${voldev}" "rw"
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;;
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esac
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done
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uvol_uci_commit
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for voldev in $tmpdev ; do
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ubiblock --remove "/dev/$voldev" || return $?
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done
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}
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case "$cmd" in
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align)
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echo "$ebsize"
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;;
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free)
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freebytes
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;;
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total)
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totalbytes
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;;
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detect)
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detect
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;;
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boot)
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bootvols
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;;
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list)
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listvols "$@"
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;;
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create)
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createvol "$@"
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;;
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remove)
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removevol "$@"
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;;
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device)
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getuserdev "$@"
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;;
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size)
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getsize "$@"
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;;
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up)
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activatevol "$@"
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;;
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down)
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disactivatevol "$@"
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;;
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status)
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getstatus "$@"
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;;
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write)
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updatevol "$@"
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;;
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*)
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echo "unknown command"
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return 1
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;;
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esac
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