update for rootfs_usable

initramfs/init.in

@@ -0,0 +1,109 @@
+#!/bin/sh
+
+problem()
+{
+   printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
+   sh
+}
+
+no_device()
+{
+   printf "The device %s, which is supposed to contain the\n" $1
+   printf "root file system, does not exist.\n"
+   printf "Please fix this problem and exit this shell.\n\n"
+}
+
+no_mount()
+{
+   printf "Could not mount device %s\n" $1
+   printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
+   printf "Maybe the device is formatted with an unsupported file system?\n\n"
+   printf "Or maybe filesystem type autodetection went wrong, in which case\n"
+   printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
+   printf "Available partitions:\n"
+}
+
+do_mount_root()
+{
+   mkdir /.root
+   [ -n "$rootflags" ] && rootflags="$rootflags,"
+   rootflags="$rootflags$ro"
+
+   case "$root" in
+      /dev/*    ) device=$root ;;
+      UUID=*    ) eval $root; device="$(findfs UUID=$UUID)" ;;
+      PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
+      LABEL=*   ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
+      ""        ) echo "No root device specified." ; problem ;;
+   esac
+
+   while [ ! -b "$device" ] ; do
+       no_device $device
+       problem
+   done
+
+   if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
+       no_mount $device
+       cat /proc/partitions
+       while true ; do sleep 10000 ; done
+   else
+       echo "Successfully mounted device $root"
+   fi
+}
+
+init=/sbin/init
+root=
+rootdelay=
+rootfstype=auto
+ro="ro"
+rootflags=
+device=
+resume=
+noresume=false
+
+mount -n -t devtmpfs devtmpfs /dev
+mount -n -t proc proc /proc
+mount -n -t sysfs sys /sys
+mount -n -t tmpfs run /run
+
+mkdir -p /dev/pts
+
+#mountpoint -q proc || mount -t proc proc proc
+#mountpoint -q sys || mount -t sysfs sys sys
+#mknod /dev/null c 1 3
+#if ! mountpoint -q dev
+#then
+ # mount -t tmpfs -o size=64k,mode=0755 tmpfs dev
+  #mount -t tmpfs -o mode=1777 tmpfs tmp
+  #mkdir -p dev/pts
+  #mdev -s
+#fi
+
+read -r cmdline < /proc/cmdline
+
+for param in $cmdline ; do
+  case $param in
+    init=*      ) init=${param#init=}             ;;
+    root=*      ) root=${param#root=}             ;;
+    rootdelay=* ) rootdelay=${param#rootdelay=}   ;;
+    rootfstype=*) rootfstype=${param#rootfstype=} ;;
+    rootflags=* ) rootflags=${param#rootflags=}   ;;
+    resume=*    ) resume=${param#resume=}         ;;
+    noresume    ) noresume=true                   ;;
+    ro          ) ro="ro"                         ;;
+    rw          ) ro="rw"                         ;;
+  esac
+done
+
+if [ -n "$rootdelay" ]; then sleep "$rootdelay"; fi
+do_mount_root
+
+for i in dev proc sys; do
+  [ -d /.root/$i ] || mkdir /.root/$i
+  mount -o bind /$i /.root/$i
+done
+mount -t devpts none /.root/dev/pts
+
+echo 0 > /proc/sys/kernel/printk
+
+exec switch_root /.root "$init" "$@"

initramfs/initramfs.txt

@@ -0,0 +1,6 @@
+bin
+dev
+mnt
+proc
+root
+sys