Yet another rootfs reorganization related to the rootfs initialization scripts.

src/08_generate_rootfs/etc/01_prepare.sh

@@ -1,5 +1,31 @@
 #!/bin/sh
 
+# System initialization sequence:
+#
+# /init
+#  |
+#  +--(1) /etc/01_prepare.sh (this file)
+#  |
+#  +--(2) /etc/02_overlay.sh
+#          |
+#          +-- /etc/03_init.sh
+#               |
+#               +-- /sbin/init
+#                    |
+#                    +--(1) /etc/04_bootscript.sh
+#                    |       |
+#                    |       +-- udhcpc
+#                    |           |
+#                    |           +-- /etc/05_rc.udhcp
+#                    |
+#                    +--(2) /bin/sh (Alt + F1, main console)
+#                    |
+#                    +--(2) /bin/sh (Alt + F2)
+#                    |
+#                    +--(2) /bin/sh (Alt + F3)
+#                    |
+#                    +--(2) /bin/sh (Alt + F4)
+
 echo "Suppress most kernel messages."
 dmesg -n 1
 

src/08_generate_rootfs/etc/02_overlay.sh

@@ -1,5 +1,31 @@
 #!/bin/sh
 
+# System initialization sequence:
+#
+# /init
+#  |
+#  +--(1) /etc/01_prepare.sh
+#  |
+#  +--(2) /etc/02_overlay.sh (this file)
+#          |
+#          +-- /etc/03_init.sh
+#               |
+#               +-- /sbin/init
+#                    |
+#                    +--(1) /etc/04_bootscript.sh
+#                    |       |
+#                    |       +-- udhcpc
+#                    |           |
+#                    |           +-- /etc/05_rc.udhcp
+#                    |
+#                    +--(2) /bin/sh (Alt + F1, main console)
+#                    |
+#                    +--(2) /bin/sh (Alt + F2)
+#                    |
+#                    +--(2) /bin/sh (Alt + F3)
+#                    |
+#                    +--(2) /bin/sh (Alt + F4)
+
 # Create the new mountpoint in RAM.
 mount -t tmpfs none /mnt
 

src/08_generate_rootfs/etc/03_init.sh

@@ -1,5 +1,31 @@
 #!/bin/sh
 
+# System initialization sequence:
+#
+# /init
+#  |
+#  +--(1) /etc/01_prepare.sh
+#  |
+#  +--(2) /etc/02_overlay.sh
+#          |
+#          +-- /etc/03_init.sh (this file)
+#               |
+#               +-- /sbin/init
+#                    |
+#                    +--(1) /etc/04_bootscript.sh
+#                    |       |
+#                    |       +-- udhcpc
+#                    |           |
+#                    |           +-- /etc/05_rc.udhcp
+#                    |
+#                    +--(2) /bin/sh (Alt + F1, main console)
+#                    |
+#                    +--(2) /bin/sh (Alt + F2)
+#                    |
+#                    +--(2) /bin/sh (Alt + F3)
+#                    |
+#                    +--(2) /bin/sh (Alt + F4)
+
 # If you have persistent overlay support then you can edit this file and replace
 # the default initialization  of the system. For example, you could use this:
 #
@@ -36,6 +62,7 @@ cat << CEOF
 
 CEOF
 
+  # Interactive shell with controlling tty as PID 1.
   exec setsid cttyhack sh
 fi
 

src/08_generate_rootfs/etc/04_bootscript.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+# System initialization sequence:
+#
+# /init
+#  |
+#  +--(1) /etc/01_prepare.sh
+#  |
+#  +--(2) /etc/02_overlay.sh
+#          |
+#          +-- /etc/03_init.sh
+#               |
+#               +-- /sbin/init
+#                    |
+#                    +--(1) /etc/04_bootscript.sh (this file)
+#                    |       |
+#                    |       +-- udhcpc
+#                    |           |
+#                    |           +-- /etc/05_rc.udhcp
+#                    |
+#                    +--(2) /bin/sh (Alt + F1, main console)
+#                    |
+#                    +--(2) /bin/sh (Alt + F2)
+#                    |
+#                    +--(2) /bin/sh (Alt + F3)
+#                    |
+#                    +--(2) /bin/sh (Alt + F4)
+
+echo "Welcome to \"Minimal Linux Live\" (/sbin/init)"
+
+for DEVICE in /sys/class/net/* ; do
+  echo "Found network device ${DEVICE##*/}" 
+  ip link set ${DEVICE##*/} up
+  [ ${DEVICE##*/} != lo ] && udhcpc -b -i ${DEVICE##*/} -s /etc/05_rc.dhcp
+done
+

src/08_generate_rootfs/etc/05_rc.dhcp

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# System initialization sequence:
+#
+# /init
+#  |
+#  +--(1) /etc/01_prepare.sh
+#  |
+#  +--(2) /etc/02_overlay.sh
+#          |
+#          +-- /etc/03_init.sh
+#               |
+#               +-- /sbin/init
+#                    |
+#                    +--(1) /etc/04_bootscript.sh
+#                    |       |
+#                    |       +-- udhcpc
+#                    |           |
+#                    |           +-- /etc/05_rc.udhcp (this file)
+#                    |
+#                    +--(2) /bin/sh (Alt + F1, main console)
+#                    |
+#                    +--(2) /bin/sh (Alt + F2)
+#                    |
+#                    +--(2) /bin/sh (Alt + F3)
+#                    |
+#                    +--(2) /bin/sh (Alt + F4)
+
+ip addr add $ip/$mask dev $interface
+
+if [ "$router" ]; then
+  ip route add default via $router dev $interface
+fi
+
+if [ "$ip" ]; then
+  echo "DHCP configuration for device $interface"
+  echo "ip:     $ip"
+  echo "mask:   $mask"
+  echo "router: $router"
+fi
+

src/08_generate_rootfs/etc/bootscript.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-
-echo "Welcome to \"Minimal Linux Live\" (/sbin/init)"
-
-for DEVICE in /sys/class/net/* ; do
-  echo "Found network device ${DEVICE##*/}" 
-  ip link set ${DEVICE##*/} up
-  [ ${DEVICE##*/} != lo ] && udhcpc -b -i ${DEVICE##*/} -s /etc/rc.dhcp
-done
-

src/08_generate_rootfs/etc/inittab

@@ -1,4 +1,4 @@
-::sysinit:/etc/bootscript.sh
+::sysinit:/etc/04_bootscript.sh
 ::restart:/sbin/init
 ::shutdown:echo "Sync file buffers..."
 ::shutdown:sync

src/08_generate_rootfs/etc/rc.dhcp

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-ip addr add $ip/$mask dev $interface
-
-if [ "$router" ]; then
-  ip route add default via $router dev $interface
-fi
-
-if [ "$ip" ]; then
-  echo "DHCP configuration for device $interface"
-  echo "ip:     $ip"
-  echo "mask:   $mask"
-  echo "router: $router"
-fi
-

src/08_generate_rootfs/init

@@ -1,5 +1,31 @@
 #!/bin/sh
 
+# System initialization sequence:
+#
+# /init (this file)
+#  |
+#  +--(1) /etc/01_prepare.sh
+#  |
+#  +--(2) /etc/02_overlay.sh
+#          |
+#          +-- /etc/03_init.sh
+#               |
+#               +-- /sbin/init
+#                    |
+#                    +--(1) /etc/04_bootscript.sh
+#                    |       |
+#                    |       +-- udhcpc
+#                    |           |
+#                    |           +-- /etc/05_rc.udhcp
+#                    |
+#                    +--(2) /bin/sh (Alt + F1, main console)
+#                    |
+#                    +--(2) /bin/sh (Alt + F2)
+#                    |
+#                    +--(2) /bin/sh (Alt + F3)
+#                    |
+#                    +--(2) /bin/sh (Alt + F4)
+
 echo "Welcome to \"Minimal Linux Live\" (/init)"
 
 # Let's mount all core file systems.
@@ -7,7 +33,7 @@ echo "Welcome to \"Minimal Linux Live\" (/init)"
 
 # Create new mountpoint in RAM, make it our new root location and overlay it
 # with our storage area (if overlay area exists at all). This operation invokes
-# the script '/etc/03_switch.sh' as the new init process.
+# the script '/etc/03_init.sh' as the new init process.
 exec /etc/02_overlay.sh
 
 echo "(/init) - you can never see this unless there is a serious bug..."