1aebb12f30
xenstore is very slow, so don't bother it when unneeded. Namely do not try to remove entries, which haven't even created.
51 строка
1.1 KiB
Bash
Исполняемый файл
51 строка
1.1 KiB
Bash
Исполняемый файл
#!/bin/bash
|
|
|
|
NAME=${DEVNAME#/dev/}
|
|
DESC="${ID_MODEL} (${ID_FS_LABEL})"
|
|
SIZE=$[ $(cat /sys/$DEVPATH/size) * 512 ]
|
|
MODE=w
|
|
XS_KEY="qubes-block-devices/$NAME"
|
|
|
|
xs_remove() {
|
|
if [ "$QUBES_EXPOSED" == "1" ]; then
|
|
xenstore-rm "$XS_KEY"
|
|
fi
|
|
echo QUBES_EXPOSED=0
|
|
}
|
|
|
|
# Ignore mounted...
|
|
if fgrep -q $DEVNAME /proc/mounts; then
|
|
xs_remove
|
|
exit 0
|
|
fi
|
|
# ... and used by device-mapper
|
|
if [ -n "`ls -A /sys/$DEVPATH/holders 2> /dev/null`" ]; then
|
|
xs_remove
|
|
exit 0
|
|
fi
|
|
# ... and "empty" loop devices
|
|
if [ "$MAJOR" -eq 7 -a ! -d /sys/$DEVPATH/loop ]; then
|
|
xs_remove
|
|
exit 0
|
|
fi
|
|
|
|
# Special case for CD
|
|
if [ "$ID_TYPE" = "cd" ]; then
|
|
if [ "$ID_CDROM_MEDIA" != "1" ]; then
|
|
# Hide empty cdrom drive
|
|
xs_remove
|
|
exit 0
|
|
fi
|
|
MODE=r
|
|
fi
|
|
|
|
# Special description for loop devices
|
|
if [ -d /sys/$DEVPATH/loop ]; then
|
|
DESC=$(cat /sys/$DEVPATH/loop/backing_file)
|
|
fi
|
|
xenstore-write "$XS_KEY/desc" "$DESC" "$XS_KEY/size" "$SIZE" "$XS_KEY/mode" "$MODE"
|
|
echo QUBES_EXPOSED=1
|
|
|
|
# Make sure that block backend is loaded
|
|
/sbin/modprobe xen-blkback 2> /dev/null || /sbin/modprobe blkbk
|