initramfs-framework: provides a modular initramfs

Provides the API and modules for a modular initramfs. The currently
included modules are:

 * initramfs-module-debug adds support to dynamic debugging of
   initramfs using bootparams

 * initramfs-module-udev: enables udev usage

 * initramfs-module-mdev: enables mdev usage

 * initramfs-module-e2fs: adds support for ext4, ext3 and ext2
   filesystems

(From OE-Core rev: 7b69ad2167a1f0e57db82817b98a0cbcb70a0dd3)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/meta/recipes-core/initrdscripts/initramfs-framework/e2fs b/meta/recipes-core/initrdscripts/initramfs-framework/e2fs
new file mode 100755
index 0000000000..29f801a7bd
--- /dev/null
+++ b/meta/recipes-core/initrdscripts/initramfs-framework/e2fs
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Copyright (C) 2011 O.S. Systems Software LTDA.
+# Licensed on MIT
+
+e2fs_enabled() {
+        return 0
+}
+
+e2fs_run() {
+        filesystems="ext4 ext3 ext2"
+
+        # load modules
+        for fs in $filesystems; do
+                load_kernel_module $fs
+        done
+
+        for fs in $filesystems; do
+                eval "fs_options=\$bootparam_${fs}"
+                if [ -n "$fs_options" ]; then
+                    dev=`expr "$fs_options" : '\([^:]*\).*'`
+                    path=`expr "$fs_options" : '[^:]*:\([^:]*\).*'`
+
+                    info "Mounting $dev as $fs on $path as $fs..."
+                        mkdir -p $path
+                    mount -t $fs $dev $path
+                fi
+        done
+}