diskimage-builder/lib/img-functions
Clint Byrum f6cc6bb185 Use ccache to cache all compiles between builds.
Many python extensions are built from source each time an image is
built. Repeating these is wasteful, so ccache is employed to eliminate
that waste. A cache dir outside the chroot is used to speed up
subsequent image builds.

Change-Id: Ib73563ddbe5f3be7454bfc54ab91cedb559a1304
2013-07-09 18:18:19 -07:00

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# Copyright 2012 Hewlett-Packard Development Company, L.P.
# 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 unmount_image () {
# unmount from the chroot
# Don't use TMP_MOUNT_PATH here, it might not have been set.
sudo umount -f $TMP_BUILD_DIR/mnt/sys || true
sudo umount -f $TMP_BUILD_DIR/mnt/proc || true
sudo umount -f $TMP_BUILD_DIR/mnt/dev || true
sudo umount -f $TMP_BUILD_DIR/mnt/tmp/in_target.d || true
sudo umount -f $TMP_BUILD_DIR/mnt/tmp/ccache || true
# give it a second (ok really 5) to umount XXX - why? should instead track
# the mount data / lsof etc.
sleep 5
# oh ya don't want to forget to unmount the image
sudo umount -f $TMP_BUILD_DIR/mnt || true
# having disk corruption issues; one possibility is qemu-nbd not flushing
# dirty pages on disconnect?
sync
if [ -n "$EXTRA_UNMOUNT" ]; then
$EXTRA_UNMOUNT
fi
}
function cleanup () {
unmount_image
cleanup_dirs
}
function ensure_nbd () {
NBD=`which qemu-nbd` || true
if [ -z "$NBD" ]; then
echo "qemu-nbd is not found in your PATH"
echo "Please install it on your system"
exit 1
fi
# prep nbd for mounting
(lsmod | grep '^nbd ') || sudo modprobe nbd max_part=16
}
function ensure_sudo () {
sudo echo "Ensuring sudo is available"
}
# Helper function to run a command inside the chroot
function run_in_target () {
# Force the inclusion of /usr/local/bin in PATH, this is needed for some
# distros that does not include /usr/local/bin in the sudoers secure_path.
# Note that we're not expanding PATH during argument processing, the \$
# will preserve the PATH syntax until after the sh command runs
cmd="PATH=\$PATH:/usr/local/bin ; $@"
# -E to preserve http_proxy
sudo -E chroot $TMP_MOUNT_PATH sh -c "$cmd"
}
# Helper function to run a directory of scripts inside the chroot
function run_d_in_target () {
check_element
# If we can find a directory of hooks to run in the target filesystem, bind
# mount it into the target and then execute run-parts in a chroot
if [ -d ${TMP_HOOKS_PATH}/$1.d ] ; then
sudo mkdir $TMP_MOUNT_PATH/tmp/in_target.d
sudo mount --bind ${TMP_HOOKS_PATH} $TMP_MOUNT_PATH/tmp/in_target.d
sudo mount -o remount,ro,bind ${TMP_HOOKS_PATH} $TMP_MOUNT_PATH/tmp/in_target.d
sudo mkdir -p $TMP_MOUNT_PATH/tmp/ccache
mkdir -p $DIB_CCACHE_DIR
sudo mount --bind $DIB_CCACHE_DIR $TMP_MOUNT_PATH/tmp/ccache
check_break before-$1 run_in_target bash
run_in_target dib-run-parts /tmp/in_target.d/$1.d
check_break after-$1 run_in_target bash
sudo umount -f $TMP_MOUNT_PATH/tmp/in_target.d
sudo rmdir $TMP_MOUNT_PATH/tmp/in_target.d
sudo umount -f $TMP_MOUNT_PATH/tmp/ccache || true
sudo rmdir $TMP_MOUNT_PATH/tmp/ccache
fi
}
function prepare_first_boot () {
check_break before-first-boot run_in_target bash
if [ -d ${TMP_HOOKS_PATH}/first-boot.d ] ; then
sudo cp -t $TMP_MOUNT_PATH/etc/ -a $TMP_HOOKS_PATH/first-boot.d
fi
check_break after-first-boot run_in_target bash
}
function finalise_base () {
TARGET_ROOT=$TMP_MOUNT_PATH run_d cleanup
# Remove the resolv.conf we created above
sudo rm -f $TMP_MOUNT_PATH/etc/resolv.conf
# Move the original back
if [ -L $TMP_MOUNT_PATH/etc/resolv.conf.ORIG ] || [ -f $TMP_MOUNT_PATH/etc/resolv.conf.ORIG ] ; then
sudo mv $TMP_MOUNT_PATH/etc/resolv.conf.ORIG $TMP_MOUNT_PATH/etc/resolv.conf
fi
}
function compress_image () {
# Recreate our image to throw away unnecessary data
test $IMAGE_TYPE != qcow2 && COMPRESS_IMAGE=""
qemu-img convert ${COMPRESS_IMAGE:+-c} -f raw $TMP_IMAGE_PATH -O $IMAGE_TYPE $TMP_IMAGE_PATH-new
rm $TMP_IMAGE_PATH
mv $TMP_IMAGE_PATH-new $TMP_IMAGE_PATH
}
function do_extra_package_install () {
# Install any packages that were requested with the -p command line option
if [ "$INSTALL_PACKAGES" != "" ]; then
run_in_target install-packages ${INSTALL_PACKAGES[@]}
fi
}
function copy_elements_lib () {
sudo mkdir -p $TMP_MOUNT_PATH/lib/diskimage-builder
sudo cp -t $TMP_MOUNT_PATH/lib/diskimage-builder $_LIB/elements-functions
}