ISO/archiso/hooks/archiso_loop_mnt
Gerardo Exequiel Pozzi 06a8c66eae [archiso] Add support to mount iso in loopback mode.
Add two parameters:

img_dev=/dev/sdNM
   where /dev/sdNM is the device where .iso is located.
img_loop=/path/to/arch.iso
   where /path/to/arch.iso is the full path of the .iso in the device img_dev.

Original idea from Baurzhan Muftakhidinov.

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
2010-12-07 23:48:24 -03:00

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# vim: set ft=sh:
run_hook () {
if [ -n "${img_dev}" ] && [ -n "${img_loop}" ]; then
mount_handler="archiso_loop_mount_handler"
fi
}
archiso_loop_mount_handler () {
newroot="${1}"
while [ ! -b "${img_dev}" ]; do
sleep 1
done
msg "::: Setup a loop device from ${img_loop} located at device ${img_dev}"
FSTYPE=$(blkid -o value -s TYPE -p ${img_dev} 2> /dev/null)
if [ -n "${FSTYPE}" ]; then
if mount -r -t "${FSTYPE}" ${img_dev} /img_dev > /dev/null 2>&1; then
_dev_loop=$(losetup -f)
losetup ${_dev_loop} /img_dev/${img_loop}
fi
fi
archiso_mount_handler ${newroot}
if [ "${copytoram}" = "y" ]; then
msg "::: Deataching loop device ${_dev_loop}"
losetup -d ${_dev_loop}
msg "::: Unmounting ${img_dev}"
umount ${img_dev}
fi
}