diskimage-builder/lib/ramdisk-functions

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# Copyright 2012 Hewlett-Packard Development Company, L.P.
# Copyright (c) 2012 NTT DOCOMO, INC.
#
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
function fullpath() {
local f=$1
if [ "${f#/}" = "$f" ]; then
echo `pwd`/"$f"
else
echo "$f"
fi
}
function cleanup () {
sudo umount -f $TMP_BUILD_DIR || true
rm -rf "$TMP_BUILD_DIR"
}
function ensure_binaries() {
BINARY_DEPS="${BUSYBOX}"
for _FLVR in ${RAMDISK_ELEMENT} ; do
for dir in $(echo $ELEMENTS_PATH | tr ":" " ") ; do
[ -d $dir/$_FLVR ] || continue
_FILE="${dir}/${_FLVR}/binary-deps"
if [ -a $_FILE ]; then
for _LINE in $(cat $_FILE) ; do
BINARY_DEPS="${BINARY_DEPS} $_LINE"
done
fi
break
done
done
for _BIN in $BINARY_DEPS ; do
_LOCATION=$(which "$_BIN" || echo "")
if [ -z "$_LOCATION" ]; then
echo "$_BIN is not found in your PATH" 1>&2
echo "Please install it on your system"
exit 1
fi
done
export BINARY_DEPS
}
function create_base () {
echo "Creating base system"
mkdir -p "$TMP_MOUNT_PATH/bin"
ln -s bin "$TMP_MOUNT_PATH/sbin"
mkdir -p "$TMP_MOUNT_PATH/lib"
mkdir -p "$TMP_MOUNT_PATH/lib/modules"
mkdir -p "$TMP_MOUNT_PATH/etc"
mkdir -p "$TMP_MOUNT_PATH/etc/udev"
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# cjk adding for discovery support
mkdir -p "$TMP_MOUNT_PATH/var/lib/dhcp"
mkdir -p "$TMP_MOUNT_PATH/var/run"
mkdir -p "$TMP_MOUNT_PATH/lib/udev/rules.d"
cp -a "$LIB_UDEV/rules.d/50-firmware.rules" "$TMP_MOUNT_PATH/lib/udev/rules.d"
cp -a "$LIB_UDEV/rules.d/80-drivers.rules" "$TMP_MOUNT_PATH/lib/udev/rules.d"
if [ -a $LIB_UDEV/firmware ]; then
cp -a "$LIB_UDEV/firmware" "$TMP_MOUNT_PATH/lib/udev"
fi
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# cjk adding for hwdiscovery support
cp "/sbin/dhclient-script" "$TMP_MOUNT_PATH/sbin"
mkdir -p "$TMP_MOUNT_PATH/etc/modprobe.d"
echo "blacklist evbug" > "$TMP_MOUNT_PATH/etc/modprobe.d/blacklist.conf"
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# cjk adding for hwdiscovery support
touch "$TMP_MOUNT_PATH/etc/fstab"
mkdir -p "$TMP_MOUNT_PATH/etc/udev"
cat >"$TMP_MOUNT_PATH/etc/udev/udev.conf" <<EOF
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udev_root="/dev"
udev_rules="/lib/udev/rules.d"
udev_log="no"
EOF
generate_hooks
TARGET_ROOT=$TMP_MOUNT_PATH run_d root
}
function copy_required_libs() {
set +e
ldd_out=`ldd "$1"`
local ret_code=$?
set -e
if [ $ret_code -ne 0 ]; then
return
fi
local IFS="
"
# Patterns of output of ldd
#
# 1. name to real path
# libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f095e784000)
# 2. only path
# /lib64/ld-linux-x86-64.so.2 (0x00007f095ef79000)
# 3. path to path
# /lib64/ld-linux-x86-64.so.2 => /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 (0x00007facff857000)
# 4. name to empty (vdso)
# linux-vdso.so.1 => (0x00007fff0c5ff000)
for i in `echo "$ldd_out" | sed -e 's/^\t*//'`; do
local ref=$( echo "$i" | awk -F '[ ]' '{print $1}')
local real=$( echo "$i" | awk -F '[ ]' '$2 == "=>" {print $3}
$2 != "=>" {print $1}')
if [ -z "$real" ]; then
continue
fi
if [ "$ref" = "${ref#/}" ]; then
ref=/lib/$ref
fi
dest=/lib/`basename "$real"`
cp -Ln "$real" "$TMP_MOUNT_PATH/$dest"
# Create a symbolic link if the shared library is referred
# by the different name
if [ "$ref" != "$dest" ]; then
local link_path=$TMP_MOUNT_PATH/$ref
if ! [ -e "$link_path" -o -L "$link_path" ]; then
mkdir -p `dirname "$link_path"`
ln -s "$dest" "$link_path"
fi
fi
done
}
function populate_lib () {
echo "Populating /lib"
# find udevd
UDEVD=
for f in /sbin/udevd /lib/udev/udevd /lib/systemd/systemd-udevd \
/usr/lib/systemd/systemd-udevd \
/usr/lib/udev/udevd; do
if [ -x "$f" ]; then
UDEVD="$f"
break
fi
done
UDEV_FIRMWARE=
if [ -a $LIB_UDEV/firmware ]; then
UDEV_FIRMWARE="$LIB_UDEV/firmware"
fi
for i in "$BUSYBOX" bash lsmod modprobe udevadm \
wget reboot shutdown $UDEVD $UDEV_FIRMWARE \
$BINARY_DEPS ; do
if "$BUSYBOX" --list | grep "^$i\$" >/dev/null; then
continue
fi
path=`which $i 2>/dev/null` || path=$i
if ! [ -x "$path" ]; then
echo "$i is not found in PATH" 2>&1
exit 1
fi
cp -L "$path" "$TMP_MOUNT_PATH/bin/"
copy_required_libs "$path"
done
cp -a "$MODULE_DIR" "$TMP_MOUNT_PATH/lib/modules/$KERNEL_VERSION"
cp -a "$FIRMWARE_DIR" "$TMP_MOUNT_PATH/lib/firmware"
}
function populate_busybox () {
echo "Creating symlinks for busybox binaries"
for i in $( "$BUSYBOX" --list ); do
if [ -f "$TMP_MOUNT_PATH/bin/$i" ]; then
echo "skip $i"
continue
fi
ln -s busybox "$TMP_MOUNT_PATH/bin/$i"
done
}
function populate_init () {
echo "Installing init"
cp "$INIT" "$TMP_MOUNT_PATH/init"
chmod +x $TMP_MOUNT_PATH/init
for F in "$FUNCTIONS_D"/* ; do
cp "$F" "$TMP_MOUNT_PATH"
done
# Append /init with any element fragments that are present
for _FLVR in ${RAMDISK_ELEMENT} ; do
for dir in $(echo $ELEMENTS_PATH | tr ":" " ") ; do
[ -d $dir/$_FLVR ] || continue
_FILE="${dir}/${_FLVR}/init"
if [ -a $_FILE ]; then
cat >>$TMP_MOUNT_PATH/init <<EOF
# init fragment from ${_FLVR}
EOF
cat <$_FILE >>$TMP_MOUNT_PATH/init
fi
break
done
done
# Add our final steps to /init
cat <${INIT}-end >>$TMP_MOUNT_PATH/init
}
function finalise_image () {
echo "Finalising image"
(cd "$TMP_MOUNT_PATH"; find . | cpio -o -H newc | gzip > "$TMP_IMAGE_PATH" )
}
function populate_udev () {
echo "Installing udev rules"
for _FLVR in ${RAMDISK_ELEMENT} ; do
for dir in $(echo $ELEMENTS_PATH | tr ":" " ") ; do
[ -d $dir/$_FLVR ] || continue
_DIR="${dir}/${_FLVR}/udev"
if [ -d $_DIR ]; then
find $_DIR -type f -exec cp -v {} $TMP_MOUNT_PATH/lib/udev/rules.d/ \;
fi
break
done
done
}