add preinit modularization work by Daniel Dickinson (cshore)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19331 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/base-files/files/lib/preinit/05_mount_skip

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+check_skip() {
+    if [ "$pi_mount_skip_next" = "true" ]; then
+	return 0
+    else 
+	return 1
+    fi
+}
+

package/base-files/files/lib/preinit/10_check_for_mtd

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+mount_no_mtd() {
+    mtd unlock rootfs
+    mount -o remount,rw /dev/root /
+}
+
+check_for_mtd() {
+    check_skip || {
+	grep rootfs_data /proc/mtd >/dev/null 2>/dev/null || {
+	    mount_no_mtd && pi_mount_skip_next=true
+	}
+    }
+}
+
+boot_hook_add preinit_mount_root check_for_mtd
+

package/base-files/files/lib/preinit/10_essential_fs

@@ -0,0 +1,25 @@
+#!/bin/sh 
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+do_mount_procfs() {
+   mount proc /proc -t proc
+}
+
+do_mount_sysfs() {
+    mount sysfs /sys -t sysfs
+}
+
+calc_tmpfs_size() {
+    pi_size=$(awk '/MemTotal:/ {l=5242880;mt=($2*1024);print((s=mt/2)<l)&&(mt>l)?mt-l:s}' /proc/meminfo)
+}
+
+do_mount_tmpfs() {
+    calc_tmpfs_size
+    mount tmpfs /tmp -t tmpfs -o size=$pi_size,nosuid,nodev,mode=1777
+}
+
+boot_hook_add preinit_essential do_mount_procfs
+boot_hook_add preinit_essential do_mount_sysfs
+boot_hook_add preinit_essential do_mount_tmpfs
+

package/base-files/files/lib/preinit/10_indicate_failsafe

@@ -0,0 +1,18 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+# commands for emitting messages to network in failsafe mode
+
+indicate_failsafe_led () {
+    set_state failsafe
+}
+
+indicate_failsafe() {
+    echo "- failsafe -"
+    preinit_net_echo "Entering Failsafe!\n"
+    indicate_failsafe_led
+}
+
+boot_hook_add failsafe indicate_failsafe
+

package/base-files/files/lib/preinit/10_indicate_preinit

@@ -0,0 +1,52 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+preinit_ip() {
+    # if the preinit interface isn't specified and ifname is set in 
+    # preinit.arch use that interface
+    if [ -z "$pi_ifname" ]; then
+	pi_ifname=$ifname    
+    fi
+
+    [ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
+	ifconfig $pi_ifname $pi_ip netmask $pi_netmask broadcast $pi_broadcast up
+    }
+}
+
+preinit_ip_deconfig() {
+    [ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
+	ifconfig $pi_ifname 0.0.0.0 down
+    }
+}
+
+preinit_net_echo() {
+	[ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
+		{ 
+			[ "$pi_preinit_net_messages" = "y" ] || {
+    		     		[ "$pi_failsafe_net_message"  = "true" ] && 
+    		         	    [ "$pi_preinit_no_failsafe_netmsg" != "y" ] 
+    		         }
+	    			
+		} && netmsg $pi_broadcast "$1"
+    	}
+}
+
+preinit_echo() {
+    preinit_net_echo $1
+    echo $1
+}
+
+pi_indicate_led() {
+    set_state preinit
+}
+
+pi_indicate_preinit() {
+    echo "- preinit -"
+    preinit_net_echo "Doing OpenWRT Preinit\n"
+    pi_indicate_led
+}
+
+boot_hook_add preinit_main preinit_ip
+boot_hook_add preinit_main pi_indicate_preinit
+

package/base-files/files/lib/preinit/20_check_jffs2_ready

@@ -0,0 +1,19 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+mount_no_jffs2() {
+    echo "jffs2 not ready yet; using ramdisk"
+    ramoverlay
+}
+
+check_for_jffs2() {
+    check_skip || {
+	jffs2_ready || {
+	    mount_no_jffs2 && pi_mount_skip_next=true
+	}
+    }
+}
+
+boot_hook_add preinit_mount_root check_for_jffs2
+

package/base-files/files/lib/preinit/20_device_fs_mount

@@ -0,0 +1,28 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+do_mount_devfs() {
+    mount devfs /dev -t devfs
+}
+
+do_mount_hotplug() {
+    mount -t tmpfs tmpfs /dev -o size=512K
+}
+
+do_mount_udev() {
+    mount -n -t tmpfs -o mode=0755 udev /dev
+}
+
+choose_device_fs() {
+    if grep devfs /proc/filesystems > /dev/null; then
+        do_mount_devfs
+    elif [ -x /sbin/hotplug2 ]; then
+        do_mount_hotplug
+    elif [ -x /sbin/udevd ]; then
+        do_mount_udev
+    fi
+}
+
+boot_hook_add preinit_essential choose_device_fs
+

package/base-files/files/lib/preinit/30_device_fs_daemons

@@ -0,0 +1,36 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+init_devfs() {
+    HOTPLUG=/sbin/hotplug-call
+}
+
+init_hotplug2() {
+    [ -c /dev/console ] || mknod /dev/console c 5 1
+    /sbin/hotplug2 --set-worker /lib/hotplug2/worker_fork.so --set-rules-file /etc/hotplug2-init.rules --no-persistent --set-coldplug-cmd /sbin/udevtrigger
+    /sbin/hotplug2 --set-worker /lib/hotplug2/worker_fork.so --set-rules-file /etc/hotplug2-init.rules --persistent &
+}
+
+init_udev() {
+    [ -d /lib/udev/devices ] && cp -af /lib/udev/devices/* /dev/
+    [ -c /dev/console ] || mknod -m 0600 /dev/console c 5 1
+    [ -c /dev/null ] || mknod -m 0666 /dev/null c 1 3
+    /sbin/udevd --daemon --resolve-names=never
+    /sbin/udevadm trigger
+    /sbin/udevadm settle    
+}
+
+init_device_fs() {
+    HOTPLUG=
+    if grep devfs /proc/filesystems > /dev/null; then
+	init_devfs
+    elif [ -x /sbin/hotplug2 ]; then
+	init_hotplug2
+    elif [ -x /sbin/udevd ]; then
+	init_udev
+    fi
+}
+
+boot_hook_add preinit_essential init_device_fs
+

package/base-files/files/lib/preinit/30_failsafe_wait

@@ -0,0 +1,86 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+fs_wait_for_key () {
+    local timeout=$3
+    local timer
+    local do_failsafe
+    local keypress_true="$(mktemp)"
+    local keypress_wait="$(mktemp)"
+    local keypress_sec="$(mktemp)"
+    if [ -z "$keypress_wait" ]; then
+	keypress_wait=/tmp/.keypress_wait
+	touch $keypress_wait
+    fi
+    if [ -z "$keypress_true" ]; then
+	keypress_true=/tmp/.keypress_true
+	touch $keypress_true
+    fi
+    if [ -z "$keypress_sec" ]; then
+	keypress_sec=/tmp/.keypress_sec
+	touch $keypress_sec
+    fi
+
+    trap "echo 'true' >$keypress_true; lock -u $keypress_wait ; rm -f $keypress_wait" INT
+    trap "echo 'true' >$keypress_true; lock -u $keypress_wait ; rm -f $keypress_wait" USR1
+
+    [ -n "$timeout" ] || timeout=1
+    [ $timeout -ge 1 ] || timeout=1
+    timer=$timeout
+    lock $keypress_wait
+    {
+	while [ $timer -gt 0 ]; do
+            echo "$timer" >$keypress_sec
+	    timer=$(($timer - 1))
+	    sleep 1
+	done
+	lock -u $keypress_wait
+	rm -f $keypress_wait
+    } &
+
+    echo "Press $1<ENTER> $2"
+    # if we're on the console we wait for input
+    { 
+	while [ -r $keypress_wait ]; do
+	    timer="$(cat $keypress_sec)"
+
+	    [ -n "$timer" ] || timer=1
+	    timer="${timer%%\ *}"
+	    [ $timer -ge 1 ] || timer=1
+	    do_failsafe=""
+	    {
+		read -t "$timer" do_failsafe
+		if [ "$do_failsafe" = "$1" ]; then
+		    echo "true" >$keypress_true
+		    lock -u $keypress_wait
+		    rm -f $keypress_wait
+ 		fi
+	    }
+	done
+    }
+    lock -w $keypress_wait
+
+    trap - INT
+    trap - USR1
+
+    keypressed=1
+    [ "$(cat $keypress_true)" = "true" ] && keypressed=0
+    rm -f $keypress_true
+    rm -f $keypress_wait
+    rm -f $keypress_sec
+    
+    return $keypressed
+}
+
+failsafe_wait() {
+    FAILSAFE=
+    pi_failsafe_net_message=true
+    preinit_net_echo "Please press button now to enter failsafe"
+    pi_failsafe_net_message=false
+    echo -n "Press CTRL-C or "
+    fs_wait_for_key f 'to enter failsafe mode' $fs_failsafe_wait_timeout && FAILSAFE=true && export FAILSAFE
+}
+
+boot_hook_add preinit_main failsafe_wait
+

package/base-files/files/lib/preinit/40_init_shm

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+init_shm() {
+    [ -d /dev/shm ] || mkdir -p /dev/shm
+}
+
+boot_hook_add preinit_essential init_shm
+

package/base-files/files/lib/preinit/40_mount_devpts

@@ -0,0 +1,15 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+init_devpts() {
+    [ -d /dev/pts ] || mkdir -p /dev/pts
+}
+
+do_mount_devpts() {
+    mount devpts /dev/pts -t devpts
+}
+
+boot_hook_add preinit_essential init_devpts
+boot_hook_add preinit_essential do_mount_devpts
+

package/base-files/files/lib/preinit/40_mount_jffs2

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+find_mount_jffs2() {
+    mount "$(find_mtd_part rootfs_data)" /jffs -t jffs2
+}
+
+jffs2_not_mounted() {
+    if [ "$pi_jffs2_mount_success" != "true" ]; then
+	return 0
+    else
+	return 1
+    fi
+}
+
+do_mount_jffs2() {
+    check_skip || {
+	find_mount_jffs2 && pi_jffs2_mount_success=true
+    }
+}
+
+boot_hook_add preinit_mount_root do_mount_jffs2
+

package/base-files/files/lib/preinit/40_run_failsafe_hook

@@ -0,0 +1,13 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+run_failsafe_hook() {
+    if [ "$FAILSAFE" = "true" ]; then
+	boot_run_hook failsafe
+	lock -w /tmp/.failsafe
+    fi
+}
+
+boot_hook_add preinit_main run_failsafe_hook
+

package/base-files/files/lib/preinit/50_choose_console

@@ -0,0 +1,31 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+choose_console() {
+    # the shell really doesn't like having stdin/out closed
+    # that's why we use /dev/pty/m0 and m1 (or equivalent) as replacement
+    # for /dev/console if there's no serial console available
+
+    if grep devfs /proc/filesystems > /dev/null; then
+	M0=/dev/pty/m0
+	M1=/dev/pty/m1
+	M2=/dev/pty/m1
+    elif [ -x /sbin/hotplug2 ]; then
+	M0=/dev/ptmx
+	M1=/dev/ptmx
+	M2=/dev/ptmx
+    elif [ -x /sbin/udevd ]; then
+	M0=/dev/pty/ptmx
+	M1=/dev/pty/ptmx
+	M2=/dev/pty/ptmx
+    fi
+    dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
+	M0=/dev/console
+	M1=/dev/console
+	M2=/dev/console    
+    }
+}
+
+boot_hook_add preinit_essential choose_console
+

package/base-files/files/lib/preinit/50_indicate_regular_preinit

@@ -0,0 +1,12 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+indicate_regular_preinit() {
+    echo "- regular preinit -"
+    preinit_net_echo "Continuing with Regular Preinit\n"
+    pi_indicate_led
+}
+
+boot_hook_add preinit_main indicate_regular_preinit
+

package/base-files/files/lib/preinit/60_init_hotplug

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+init_hotplug() {
+   echo "$HOTPLUG" > /proc/sys/kernel/hotplug
+}
+
+boot_hook_add preinit_main init_hotplug
+

package/base-files/files/lib/preinit/70_initramfs_test

@@ -0,0 +1,13 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+initramfs_test() {
+    if [ -n "$INITRAMFS" ]; then
+	boot_run_hook initramfs
+	break
+    fi
+}
+
+boot_hook_add preinit_main initramfs_test
+

package/base-files/files/lib/preinit/70_pivot_jffs2_root

@@ -0,0 +1,13 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+rootfs_pivot() {
+    check_skip || jffs2_not_mounted || {
+	echo "switching to jffs2"
+	fopivot /jffs /rom && pi_mount_skip_next=true
+    }
+}
+
+boot_hook_add preinit_mount_root rootfs_pivot
+

package/base-files/files/lib/preinit/80_mount_root

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+do_mount_root() {
+    boot_run_hook preinit_mount_root
+}   
+
+boot_hook_add preinit_main do_mount_root
+

package/base-files/files/lib/preinit/90_init_console

@@ -0,0 +1,14 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+init_console() {
+    if [ "$pi_suppress_stderr" = "y" ]; then
+	exec <$M0 >$M1 2>&0
+    else 
+	exec <$M0 >$M1 2>$M2
+    fi
+}
+
+boot_hook_add preinit_essential init_console
+

package/base-files/files/lib/preinit/90_mount_no_jffs2

@@ -0,0 +1,12 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+do_mount_no_jffs2() {
+    check_skip || {
+	mount_no_jffs2 && pi_mount_skip_next=true
+    }
+}
+
+boot_hook_add preinit_mount_root do_mount_no_jffs2
+

package/base-files/files/lib/preinit/90_restore_config

@@ -0,0 +1,17 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+restore_config() {
+    [ -f /sysupgrade.tgz ] && {
+	echo "- config restore -"
+	cd /
+	mv sysupgrade.tgz /tmp
+	tar xzf /tmp/sysupgrade.tgz
+	rm -f /tmp/sysupgrade.tgz
+	sync
+    }
+}
+
+boot_hook_add preinit_main restore_config
+

package/base-files/files/lib/preinit/99_10_failsafe_login

@@ -0,0 +1,18 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+failsafe_netlogin () {
+    telnetd -l /bin/login.sh <> /dev/null 2>&1    
+}
+
+failsafe_shell() {
+    lock /tmp/.failsafe
+    ash --login
+    echo "Please reboot system when done with failsafe network logins"
+}
+
+
+boot_hook_add failsafe failsafe_netlogin
+boot_hook_add failsafe failsafe_shell
+

package/base-files/files/lib/preinit/99_10_mount_no_mtd

@@ -0,0 +1,12 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+do_mount_no_mtd() {
+    check_skip || {
+	mount_no_mtd
+    }
+}
+
+boot_hook_add preinit_mount_root do_mount_no_mtd
+

package/base-files/files/lib/preinit/99_10_run_init

@@ -0,0 +1,16 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+run_init() {
+    preinit_echo "- init -"
+    preinit_ip_deconfig
+    if [ "$pi_init_stderr_suppress" = "y" ]; then
+	exec env - PATH=$pi_init_path $pi_init_env $pi_init_cmd 2>&0
+    else
+	exec env - PATH=$pi_init_path $pi_init_env $pi_init_cmd
+    fi
+}
+
+boot_hook_add preinit_main run_init
+