diff options
Diffstat (limited to 'poky/meta/recipes-core/initrdscripts/initramfs-framework')
9 files changed, 518 insertions, 0 deletions
diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/debug b/poky/meta/recipes-core/initrdscripts/initramfs-framework/debug new file mode 100644 index 000000000..00bfd7d3f --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/debug @@ -0,0 +1,82 @@ +#!/bin/sh +# Copyright (C) 2011 O.S. Systems Software LTDA. +# Licensed on MIT + +# Adds support to dynamic debugging of initramfs using bootparam in +# following format: +# shell : starts a shell before and after each module +# shell=before:<module> : starts a shell before <module> is loaded and run +# shell=after:<module> : starts a shell after <module> is loaded and run +# +# shell-debug : run set -x as soon as possible +# shell-debug=before:<module> : run set -x before <module> is loaded and run +# shell-debug=after:<module> : run set -x after <module> is loaded and run + +DEBUG_SHELL="false" + +debug_hook_handler() { + status=$1 + module=$2 + + if [ -n "$bootparam_shell" ] && [ "$bootparam_shell" != "true" ]; then + shell_wanted_status=`expr $bootparam_shell : '\(.*\):.*'` + shell_wanted_module=`expr $bootparam_shell : '.*:\(.*\)'` + + if [ "$shell_wanted_status" = "before" ]; then + shell_wanted_status=pre + else + shell_wanted_status=post + fi + fi + + if [ "$bootparam_shell" = "true" ] || + ( [ "$status" = "$shell_wanted_status" ] && + [ "$module" = "$shell_wanted_module" ] ); then + if [ "$status" = "pre" ]; then + status_msg="before" + else + status_msg="after" + fi + + msg "Starting shell $status_msg $module..." + sh + fi + + if [ -n "$bootparam_shell_debug" ] && [ "$bootparam_shell_debug" != "true" ]; then + shell_debug_wanted_status=`expr $bootparam_shell_debug : '\(.*\):.*'` + shell_debug_wanted_module=`expr $bootparam_shell_debug : '.*:\(.*\)'` + + if [ "$shell_debug_wanted_status" = "before" ]; then + shell_debug_wanted_status=pre + else + shell_debug_wanted_status=post + fi + fi + + if [ "$bootparam_shell_debug" = "true" ] || + ( [ "$status" = "$shell_debug_wanted_status" ] && + [ "$module" = "$shell_debug_wanted_module" ] ); then + if [ "$DEBUG_SHELL" = "true" ]; then + return 0 + fi + + if [ "$status" = "pre" ]; then + status_msg="before" + else + status_msg="after" + fi + + msg "Starting shell debugging $status_msg $module..." + DEBUG_SHELL="true" + set -x + fi +} + +debug_enabled() { + return 0 +} + +debug_run() { + add_module_pre_hook "debug_hook_handler" + add_module_post_hook "debug_hook_handler" +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/e2fs b/poky/meta/recipes-core/initrdscripts/initramfs-framework/e2fs new file mode 100755 index 000000000..29f801a7b --- /dev/null +++ b/poky/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 +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/exec b/poky/meta/recipes-core/initrdscripts/initramfs-framework/exec new file mode 100644 index 000000000..a8e2432bb --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/exec @@ -0,0 +1,29 @@ +#!/bin/sh +# Copyright (C) 2017 O.S. Systems Software LTDA. +# Licensed on MIT + +EXEC_DIR=/exec.d # place to look for modules + +exec_enabled() { + return 0 +} + +exec_run() { + if [ ! -d $EXEC_DIR ]; then + msg "No contents to exec in $EXEC_DIR. Starting shell ..." + sh + fi + + # Load and run modules + for m in $EXEC_DIR/*; do + # Skip backup files + if [ "`echo $m | sed -e 's/\~$//'`" != "$m" ]; then + continue + fi + + debug "Starting $m" + + # process module + ./$m + done +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/finish b/poky/meta/recipes-core/initrdscripts/initramfs-framework/finish new file mode 100755 index 000000000..717383eba --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/finish @@ -0,0 +1,27 @@ +#!/bin/sh +# Copyright (C) 2011 O.S. Systems Software LTDA. +# Licensed on MIT + +finish_enabled() { + return 0 +} + +finish_run() { + if [ -n "$ROOTFS_DIR" ]; then + if [ ! -d $ROOTFS_DIR/dev ]; then + fatal "ERROR: There's no '/dev' on rootfs." + fi + + info "Switching root to '$ROOTFS_DIR'..." + + debug "Moving /dev, /proc and /sys onto rootfs..." + mount --move /dev $ROOTFS_DIR/dev + mount --move /proc $ROOTFS_DIR/proc + mount --move /sys $ROOTFS_DIR/sys + + cd $ROOTFS_DIR + exec switch_root -c /dev/console $ROOTFS_DIR ${bootparam_init:-/sbin/init} + else + debug "No rootfs has been set" + fi +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/init b/poky/meta/recipes-core/initrdscripts/initramfs-framework/init new file mode 100755 index 000000000..37527a840 --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/init @@ -0,0 +1,145 @@ +#!/bin/sh +# Copyright (C) 2011 O.S. Systems Software LTDA. +# Licensed on MIT +# +# Provides the API to be used by the initramfs modules +# +# Modules need to provide the following functions: +# +# <module>_enabled : check if the module ought to run (return 1 to skip) +# <module>_run : do what is need +# +# Boot parameters are available on environment in the as: +# +# 'foo=value' as 'bootparam_foo=value' +# 'foo' as 'bootparam_foo=true' +# 'foo.bar[=value] as 'foo_bar=[value|true]' + +# Register a function to be called before running a module +# The hook is called as: +# <function> pre <module> +add_module_pre_hook() { + MODULE_PRE_HOOKS="$MODULE_PRE_HOOKS $1" +} + +# Register a function to be called after running a module +# The hook is called as: +# <function> post <module> +add_module_post_hook() { + MODULE_POST_HOOKS="$MODULE_POST_HOOKS $1" +} + +# Load kernel module +load_kernel_module() { + if modprobe $1 >/dev/null 2>&1; then + info "Loaded module $1" + else + debug "Failed to load module $1" + fi +} + +# Prints information +msg() { + echo "$@" >/dev/console +} + +# Prints information if verbose bootparam is used +info() { + [ -n "$bootparam_verbose" ] && echo "$@" >/dev/console +} + +# Prints information if debug bootparam is used +debug() { + [ -n "$bootparam_debug" ] && echo "DEBUG: $@" >/dev/console +} + +# Prints a message and start a endless loop +fatal() { + echo $1 >/dev/console + echo >/dev/console + + if [ -n "$bootparam_init_fatal_sh" ]; then + sh + else + while [ "true" ]; do + sleep 3600 + done + fi +} + +# Variables shared amoung modules +ROOTFS_DIR="/rootfs" # where to do the switch root +MODULE_PRE_HOOKS="" # functions to call before running each module +MODULE_POST_HOOKS="" # functions to call after running each module +MODULES_DIR=/init.d # place to look for modules + +# make mount stop complaining about missing /etc/fstab +touch /etc/fstab + +# initialize /proc, /sys, /run/lock and /var/lock +mkdir -p /proc /sys /run/lock /var/lock +mount -t proc proc /proc +mount -t sysfs sysfs /sys + +# populate bootparam environment +for p in `cat /proc/cmdline`; do + opt=`echo $p | cut -d'=' -f1` + opt=`echo $opt | tr '.-' '__'` + if [ "`echo $p | cut -d'=' -f1`" = "$p" ]; then + eval "bootparam_${opt}=true" + else + value="`echo $p | cut -d'=' -f2-`" + eval "bootparam_${opt}=\"${value}\"" + fi +done + +# use /dev with devtmpfs +if grep -q devtmpfs /proc/filesystems; then + mkdir -p /dev + mount -t devtmpfs devtmpfs /dev +else + if [ ! -d /dev ]; then + fatal "ERROR: /dev doesn't exist and kernel doesn't has devtmpfs enabled." + fi +fi + +mkdir $ROOTFS_DIR + +# Load and run modules +for m in $MODULES_DIR/*; do + # Skip backup files + if [ "`echo $m | sed -e 's/\~$//'`" != "$m" ]; then + continue + fi + + module=`basename $m | cut -d'-' -f 2` + debug "Loading module $module" + + # pre hooks + for h in $MODULE_PRE_HOOKS; do + debug "Calling module hook (pre): $h" + eval "$h pre $module" + debug "Finished module hook (pre): $h" + done + + # process module + . $m + + if ! eval "${module}_enabled"; then + debug "Skipping module $module" + continue + fi + + debug "Running ${module}_run" + eval "${module}_run" + + # post hooks + for h in $MODULE_POST_HOOKS; do + debug "Calling module hook (post): $h" + eval "$h post $module" + debug "Finished module hook (post): $h" + done +done + +# Catch all +fatal "ERROR: Initramfs failed to initialize the system." diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/mdev b/poky/meta/recipes-core/initrdscripts/initramfs-framework/mdev new file mode 100644 index 000000000..9814d9764 --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/mdev @@ -0,0 +1,30 @@ +#!/bin/sh +# Copyright (C) 2011, 2017 O.S. Systems Software LTDA. +# Licensed on MIT + +mdev_enabled() { + if [ ! -e /sbin/mdev ]; then + debug "/sbin/mdev doesn't exist" + return 1 + fi + + return 0 +} + +mdev_run() { + # setup the environment + mount -t tmpfs tmpfs /dev + + mkdir -m 1777 /dev/shm + + mkdir -m 0755 /dev/pts + mount -t devpts devpts /dev/pts + + echo /sbin/mdev > /proc/sys/kernel/hotplug + mdev -s + + # load modules for devices + find /sys -name modalias | while read m; do + load_kernel_module $(cat "$m") + done +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/rootfs b/poky/meta/recipes-core/initrdscripts/initramfs-framework/rootfs new file mode 100644 index 000000000..76fa84d35 --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/rootfs @@ -0,0 +1,67 @@ +#!/bin/sh +# Copyright (C) 2011 O.S. Systems Software LTDA. +# Licensed on MIT + +rootfs_enabled() { + return 0 +} + +rootfs_run() { + if [ -z "$ROOTFS_DIR" ]; then + return + fi + C=0 + delay=${bootparam_rootdelay:-1} + timeout=${bootparam_roottimeout:-5} + while [ ! -d $ROOTFS_DIR/dev ]; do + if [ $(( $C * $delay )) -gt $timeout ]; then + fatal "root '$bootparam_root' doesn't exist or does not contain a /dev." + fi + + if [ -n "$bootparam_root" ]; then + debug "No e2fs compatible filesystem has been mounted, mounting $bootparam_root..." + + if [ "`echo ${bootparam_root} | cut -c1-5`" = "UUID=" ]; then + root_uuid=`echo $bootparam_root | cut -c6-` + bootparam_root="/dev/disk/by-uuid/$root_uuid" + fi + + if [ "`echo ${bootparam_root} | cut -c1-9`" = "PARTUUID=" ]; then + root_uuid=`echo $bootparam_root | cut -c10-` + bootparam_root="/dev/disk/by-partuuid/$root_uuid" + fi + + if [ "`echo ${bootparam_root} | cut -c1-6`" = "LABEL=" ]; then + root_label=`echo $bootparam_root | cut -c7-` + bootparam_root="/dev/disk/by-label/$root_label" + fi + + if [ -e "$bootparam_root" ]; then + flags="" + if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | grep -w -q "ro"; then + if [ -n "$bootparam_rootflags" ]; then + bootparam_rootflags="$bootparam_rootflags," + fi + bootparam_rootflags="${bootparam_rootflags}ro" + fi + if [ -n "$bootparam_rootflags" ]; then + flags="$flags -o$bootparam_rootflags" + fi + if [ -n "$bootparam_rootfstype" ]; then + flags="$flags -t$bootparam_rootfstype" + fi + mount $flags $bootparam_root $ROOTFS_DIR + if [ -d $ROOTFS_DIR/dev ]; then + break + else + # It is unlikely to change, but keep trying anyway. + # Perhaps we pick a different device next time. + umount $ROOTFS_DIR + fi + fi + fi + debug "Sleeping for $delay second(s) to wait root to settle..." + sleep $delay + C=$(( $C + 1 )) + done +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/setup-live b/poky/meta/recipes-core/initrdscripts/initramfs-framework/setup-live new file mode 100644 index 000000000..4c79f4128 --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/setup-live @@ -0,0 +1,64 @@ +#/bin/sh +# Copyright (C) 2011 O.S. Systems Software LTDA. +# Licensed on MIT + +setup_enabled() { + return 0 +} + +setup_run() { +ROOT_IMAGE="rootfs.img" +ISOLINUX="" +ROOT_DISK="" +shelltimeout=30 + + if [ -z "$bootparam_root" -o "$bootparam_root" = "/dev/ram0" ]; then + echo "Waiting for removable media..." + C=0 + while true + do + for i in `ls /run/media 2>/dev/null`; do + if [ -f /run/media/$i/$ROOT_IMAGE ] ; then + found="yes" + ROOT_DISK="$i" + break + elif [ -f /run/media/$i/isolinux/$ROOT_IMAGE ]; then + found="yes" + ISOLINUX="isolinux" + ROOT_DISK="$i" + break + fi + done + if [ "$found" = "yes" ]; then + break; + fi + # don't wait for more than $shelltimeout seconds, if it's set + if [ -n "$shelltimeout" ]; then + echo -n " " $(( $shelltimeout - $C )) + if [ $C -ge $shelltimeout ]; then + echo "..." + echo "Mounted filesystems" + mount | grep media + echo "Available block devices" + cat /proc/partitions + fatal "Cannot find $ROOT_IMAGE file in /run/media/* , dropping to a shell " + fi + C=$(( C + 1 )) + fi + sleep 1 + done + # The existing rootfs module has no support for rootfs images. Assign the rootfs image. + bootparam_root="/run/media/$ROOT_DISK/$ISOLINUX/$ROOT_IMAGE" + fi + + if [ "$bootparam_LABEL" != "boot" -a -f /init.d/$bootparam_LABEL.sh ] ; then + if [ -f /run/media/$i/$ISOLINUX/$ROOT_IMAGE ] ; then + ./init.d/$bootparam_LABEL.sh $i/$ISOLINUX $ROOT_IMAGE $video_mode $vga_mode $console_params + else + fatal "Could not find $bootparam_LABEL script" + fi + + # If we're getting here, we failed... + fatal "Target $bootparam_LABEL failed" + fi +} diff --git a/poky/meta/recipes-core/initrdscripts/initramfs-framework/udev b/poky/meta/recipes-core/initrdscripts/initramfs-framework/udev new file mode 100644 index 000000000..79c886782 --- /dev/null +++ b/poky/meta/recipes-core/initrdscripts/initramfs-framework/udev @@ -0,0 +1,46 @@ +#!/bin/sh +# Copyright (C) 2011, 2012 O.S. Systems Software LTDA. +# Licensed on MIT + +udev_shutdown_hook_handler() { + status=$1 + module=$2 + if [ "$status" = "pre" ] && [ "$module" = "finish" ]; then + killall `basename $_UDEV_DAEMON` 2>/dev/null + fi +} + +udev_daemon() { + OPTIONS="/sbin/udev/udevd /sbin/udevd /lib/udev/udevd /lib/systemd/systemd-udevd" + + for o in $OPTIONS; do + if [ -x "$o" ]; then + echo $o + return 0 + fi + done + + return 1 +} + +_UDEV_DAEMON=`udev_daemon` + +udev_enabled() { + if [ -z "$_UDEV_DAEMON" ]; then + msg "WARNING: Cannot find the udev daemon; daemon will not be started in initramfs." + return 1 + fi + + return 0 +} + +udev_run() { + add_module_pre_hook "udev_shutdown_hook_handler" + + mkdir -p /run + mkdir -p /var/run + + $_UDEV_DAEMON --daemon + udevadm trigger --action=add + udevadm settle +} |