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-rw-r--r--archlive_hook64
1 files changed, 64 insertions, 0 deletions
diff --git a/archlive_hook b/archlive_hook
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index 0000000..d0c31f0
--- /dev/null
+++ b/archlive_hook
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+# vim: set ft=sh:
+run_hook ()
+{
+#Big Fat TODO... we need to add possible boot 'cheatcodes'
+# as is common in most livecds. However, most of these can be handled
+# in real userspace (early userspace only needs to load the squashfs
+# image. That is _all_. Others will be handled in a custom rc.local/rc.conf
+
+ #This is going to get brutal...
+
+ if [ "x${ramdisk_size}" = "x" ]; then
+ ramdisk_size="75%"
+ fi
+ msg -n ":: Mounting tmpfs, size=${ramdisk_size}..."
+ mount -t tmpfs -o "size=${ramdisk_size}" tmpfs /tmpfs
+ mkdir /tmpfs/bootcd
+ msg "done."
+
+ squashfound=0
+ msg -n ":: Scanning for boot cdrom device..."
+ for cdrom in /dev/cd/*; do
+ if mount -r -t iso9660 "${cdrom}" /tmpfs/bootcd >/dev/null 2>&1; then
+ if [ -e /tmpfs/bootcd/archlive.sqfs ]; then
+ squashfound=1
+ msg "${cdrom}"
+ break
+ fi
+ fi
+ [ $squashfound -eq 0 ] && umount /tmpfs/bootcd >/dev/null 2>&1
+ done
+
+ if [ $squashfound -eq 0 ]; then
+ echo "ERROR: cannot find booted cdrom device, cannot continue..."
+ exit 1
+ fi
+
+ msg -n ":: Mounting squashfs image..."
+ /bin/modprobe -q squashfs >/dev/null 2>&1
+ mkdir -p /tmpfs/squashfs_root
+ if ! losetup /dev/loop0 /tmpfs/bootcd/archlive.sqfs; then
+ echo "ERROR: Cannot mount loop device /dev/loop0...aborting"
+ exit 1
+ fi
+ mount -r -t squashfs /dev/loop0 /tmpfs/squashfs_root
+ #mount.full -r -t squashfs -o loop /tmpfs/bootcd/squashfs_image /tmpfs/squashfs_root
+ msg "done."
+
+ msg -n ":: Mounting root (union) filesystem..."
+ /bin/modprobe -q unionfs >/dev/null 2>&1
+ mount -t unionfs -o dirs=/tmpfs=rw:/tmpfs/squashfs_root=ro,debug=0 none /real_root
+ msg "done."
+
+ if [ -d /proc/sus/dev/cdrom ]; then
+ echo 0 > /proc/sys/dev/cdrom/lock
+ echo 1 > /proc/sys/dev/cdrom/autoeject
+ fi
+
+ msg ":: Stopping udevd"
+ udevpid=$(/bin/minips -C udevd -o pid=)
+ [ "x${udevpid}" != "x" ] && /bin/kill -9 $udevpid
+ #Yep, we're bailing out here. We don't need kinit.
+ msg ":: Passing control to Archlinux Initscripts..."
+ exec /bin/run-init -c /dev/console /real_root /sbin/init ${CMDLINE}
+}