From 676782bc3af8d266b67bbc35b7d791cd8c703aee Mon Sep 17 00:00:00 2001
From: Aaron Griffin <aaron@archlinux.org>
Date: Wed, 30 Aug 2006 05:32:35 +0000
Subject: Initial import

git-svn-id: http://phraktured.net/archiso@1 00a9fe69-e71b-0410-bb23-df0e5024db41
---
 archlive_hook | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 archlive_hook

(limited to 'archlive_hook')

diff --git a/archlive_hook b/archlive_hook
new file mode 100644
index 0000000..d0c31f0
--- /dev/null
+++ b/archlive_hook
@@ -0,0 +1,64 @@
+# 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}
+}
-- 
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