cleanup script provided

initramfs/init

@@ -2,34 +2,22 @@
 # Initial script for Linux Live Kit
 # Author: Tomas M <http://www.linux-live.org/>
 
-# This is needed to enable pivot_root
-# We simply switch initramfs to mounted ramfs
-if [ ! -r /lib/root_switched ]; then
-   echo "switch root from initramfs to ramfs"
-   SWITCH=/m
-   mkdir -p $SWITCH
-   mount -t ramfs ramfs $SWITCH
-   cp -a /* $SWITCH 2>/dev/null
-   cd $SWITCH
-   touch $SWITCH/lib/root_switched
-   exec switch_root -c /dev/console . $0
-fi
-
-MOUNTDIR=/mnt
-CHANGES=$MOUNTDIR/changes
-MEMORY=$MOUNTDIR/memory
-UNION=$MOUNTDIR/union
-DATAMNT=$MOUNTDIR/data
-BUNDLES=$MOUNTDIR/bundles
-
 export PATH=.:/:/usr/sbin:/usr/bin:/sbin:/bin
 
 . /lib/.config
 . /lib/livekitlib
 
+transfer_initramfs
+
+MEMORY=/memory
+CHANGES=$MEMORY/changes
+UNION=$MEMORY/union
+DATAMNT=$MEMORY/data
+BUNDLES=$MEMORY/bundles
+
 header "Starting $LIVEKITNAME ..."
 
-init_proc
+init_proc_sysfs
 init_devs
 init_aufs
 init_zram
@@ -50,5 +38,5 @@ fstab_create "$UNION"
 header "Live Kit phase ends, starting $LIVEKITNAME"
 change_root "$UNION"
 
-header "!!ERROR!!"
+header "!!ERROR occured, you shouldn't be here.!!"
 /bin/sh

initramfs/initramfs_create

@@ -62,6 +62,7 @@ mknod $INITRAMFS/dev/tty4 c 4 4
 #done
 
 copy_including_deps /usr/bin/strace
+copy_including_deps /usr/bin/lsof
 
 # TODO: add all comon filesystems which are NOT compiled in kernel already
 copy_including_deps /$LMK/kernel/fs/squashfs
@@ -74,8 +75,12 @@ depmod -b $INITRAMFS
 echo "root::0:0::/root:/bin/bash" >$INITRAMFS/etc/passwd
 touch $INITRAMFS/etc/{m,fs}tab
 
-cp init $INITRAMFS/
+cp init $INITRAMFS
 chmod a+x $INITRAMFS/init
+cp cleanup $INITRAMFS/lib
+chmod a+x $INITRAMFS/lib/cleanup
+ln -s ../init $INITRAMFS/bin/init
+ln -s ../init $INITRAMFS/sbin/init
 cp ../livekitlib $INITRAMFS/lib/
 cp ../.config $INITRAMFS/lib/
 
@@ -84,4 +89,4 @@ find . -print | cpio -o -H newc 2>/dev/null | gzip -f --best >$INITRAMFS.img
 echo $INITRAMFS.img
 
 cd ..
-#rm -Rf $INITRAMFS
+rm -Rf $INITRAMFS

livekitlib

@@ -98,9 +98,27 @@ create_bundle()
 }
 
 
+# Move entire initramfs tree to ramfs mount.
+# It's a bit tricky but is necessray to enable pivot_root
+# even for initramfs boot image
+#
+transfer_initramfs()
+{
+   if [ ! -r /lib/initramfs_escaped ]; then
+      echo "switch root from initramfs to ramfs"
+      SWITCH=/m # one letter directory
+      mkdir -p $SWITCH
+      mount -t ramfs ramfs $SWITCH
+      cp -a /??* $SWITCH 2>/dev/null # only copy two-and-more-letter directories
+      cd $SWITCH
+      echo "This file indicates that we successfully escaped initramfs" > $SWITCH/lib/initramfs_escaped
+      exec switch_root -c /dev/console . $0
+   fi
+}
+
 # mount virtual filesystems like proc etc
 #
-init_proc()
+init_proc_sysfs()
 {
    debug_log "vfs_mount_init"
    mount -n -t proc proc /proc
@@ -231,6 +249,8 @@ fstab_create()
 #
 change_root()
 {
+   umount /proc
+   umount /sys
    cd "$1"
 
    # make sure important devices are in union
@@ -248,9 +268,8 @@ change_root()
    if [ -x sbin/init ]; then INIT=sbin/init; fi
    if [ "$INIT" = "" ]; then fatal "Can't find executable init command"; fi
 
-   mkdir -p mnt/memory
+   mkdir -p mnt/live
    mount -n -o remount,ro aufs .
-   pivot_root . mnt/memory
-   exec $CHROOT . $INIT <dev/console >dev/console 2>&1
-#   exec switch_root -c /dev/console . $INIT
+   pivot_root . mnt/live
+   exec $CHROOT . $INIT < dev/console > dev/console 2>&1
 }