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authorGerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>2010-11-30 22:16:19 -0300
committerGerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>2010-12-07 23:48:24 -0300
commit90794d7cddf1289323b7d8956bcc5c061126a2f9 (patch)
tree84e16329236ab5003e20cb329b584753580a3cce /archiso/hooks/archiso_loop_mnt
parent8921c59169b337c19502cc4cf64013ca40b9505c (diff)
[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>
Diffstat (limited to 'archiso/hooks/archiso_loop_mnt')
-rw-r--r--archiso/hooks/archiso_loop_mnt33
1 files changed, 33 insertions, 0 deletions
diff --git a/archiso/hooks/archiso_loop_mnt b/archiso/hooks/archiso_loop_mnt
new file mode 100644
index 0000000..0d5eba7
--- /dev/null
+++ b/archiso/hooks/archiso_loop_mnt
@@ -0,0 +1,33 @@
+# 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
+}