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|
#!/bin/bash
if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
_LIB="/tmp/ramdisk-build"
source "$_LIB/common-defaults"
source "$_LIB/img-defaults"
source "$_LIB/ramdisk-defaults"
source "$_LIB/common-functions"
source "$_LIB/img-functions"
source "$_LIB/ramdisk-functions"
KERNEL_VERSION="${DIB_KERNEL_VERSION:-$(find_kernel_version)}"
MODULE_DIR="$MODULE_ROOT/lib/modules/$KERNEL_VERSION"
FIRMWARE_DIR="$MODULE_ROOT/lib/firmware"
LIB_UDEV="$LIB_UDEV_ROOT/lib/udev"
INIT="$_LIB/scripts/init"
FUNCTIONS_D="$_LIB/scripts/d"
MODULE="$_LIB/scripts/module"
# NOTE(bnemec): IMAGE_ELEMENT is normally set in disk-image-create, but we're
# not using that to build the image here.
IMAGE_ELEMENT=
mk_build_dir
mkdir -p "$TMP_BUILD_DIR/mnt"
export TMP_HOOKS_PATH=/tmp
export TMP_MOUNT_PATH="$TMP_BUILD_DIR/mnt"
echo "building ramdisk in $TMP_MOUNT_PATH"
populate_init
SCRIPT_HOME=/tmp/in_target.d/bin TMP_HOOKS_PATH=/tmp/in_target.d run_d ramdisk-install
MODULE_PATH="/usr/lib/dracut/modules.d"
cp -r "$MODULE" "$MODULE_PATH/80deploy-ramdisk"
mv "$TMP_MOUNT_PATH/init" "$MODULE_PATH/80deploy-ramdisk/init.sh"
# NOTE(bnemec): Workaround for bug in Dracut. This fix has been proposed to
# Dracut as well in https://github.com/haraldh/dracut/pull/34 , and once it has
# been released for all of our supported platforms we can remove this. Until then
# this makes --include work correctly and will be a noop if we're running a fixed
# Dracut version.
sed -i 's|cp --reflink=auto --sparse=auto -fa -t "$s" "$i"$|cp --reflink=auto --sparse=auto -fa -t "${initdir}/${tgt}" "$i"|g' $(type -p dracut)
# Notes on the options passed to Dracut:
# -N: Do not build a host-specific ramdisk. We want to be able to run this ramdisk
# on as many different machines as possible.
# --install: A list of the binaries needed by our ramdisk script fragments.
# --kernel-cmdline: Kernel parameters to pass to the ramdisk. rd.neednet is required
# to force Dracut to bring up networking even if it isn't passed a
# network target root. Pre-loading the ahci module is necessary
# on some systems to ensure that SATA disks are recognized.
# --include: Files from the chroot to include in the ramdisk.
# --kver: The kernel version to use, as determined above.
# --add-drivers: Extra kernel modules to include in the ramdisk.
# -o: Force omission of these dracut modules. Our scripts are written for bash,
# so dash is not desirable, and plymouth was causing some issues on Ubuntu.
dracut -N \
--install "$(cat /etc/dib_binary_deps)" \
--kernel-cmdline "rd.shell rd.debug rd.neednet=1 rd.driver.pre=ahci" \
--include "$TMP_MOUNT_PATH/" / \
--kver "${KERNEL_VERSION}" \
--add-drivers "$(cat /etc/dib_dracut_drivers)" \
-o "dash plymouth" \
/tmp/ramdisk
cp "/boot/vmlinuz-${KERNEL_VERSION}" /tmp/kernel
chmod o+r /tmp/kernel
# We don't want to run cleanup (set in mk_build_dir above) when this exits
trap EXIT
|
