Add memdisk hook

This hook creates a block device for virtual disks created
by memdisk (http://syslinux.zytor.com/wiki/index.php/MEMDISK).

2 files changed, 30 insertions, 0 deletions

diff --git a/hooks/memdisk b/hooks/memdisk
new file mode 100644
index 0000000..2c3642e
--- /dev/null
+++ b/hooks/memdisk
@@ -0,0 +1,11 @@
+# vim:set ft=sh:
+run_hook ()
+{
+    MEMDISK=$(/usr/bin/memdiskfind)
+    if [ $? -eq 0 ]; then
+        # We found a memdisk, set up phram
+        /sbin/modprobe phram phram=memdisk,${MEMDISK}
+        # Load mtdblock, the memdisk will be /dev/mtdblock0
+        /sbin/modprobe mtdblock
+    fi
+}
diff --git a/install/memdisk b/install/memdisk
new file mode 100644
index 0000000..9c0ce16
--- /dev/null
+++ b/install/memdisk
@@ -0,0 +1,19 @@
+# vim:set ft=sh:
+
+install ()
+{
+    MODULES="phram mtdblock"
+    BINARIES="/usr/bin/memdiskfind"
+    FILES=""
+    SCRIPT="memdisk"
+}
+
+help ()
+{
+cat <<HELPEOF
+  This hook detects a virtual disk created by the memdisk
+  tool (http://syslinux.zytor.com/wiki/index.php/MEMDISK).
+
+  It requires memdiskfind from syslinux 4.00 or newer.
+HELPEOF
+}