openstack
/
diskimage-builder
Code Issues Proposed changes

Refactor: remove unused functions 

There were a couple of functions which were unused:
ensure_nbd, map_nbd, unmount_qcow_image, mount_qcow_image, ensure_sudo
Because some of them use 'trap ... EXIT' this hinders introducing a
separate exit phase - therefore they are removed.

(It would also be impossible to use them in the current setup, because
they overwrite the 'trap ... EXIT' of the disk-image-creates 'main'.)

Change-Id: If932a557dca9aea4864154ad6c4f286373d6dd7c
Signed-off-by: Andreas Florath <andreas@florath.net>
This commit is contained in:
Andreas Florath 2016-06-02 21:02:49 +02:00
parent 38dcce0fc4
commit b365d3c833
2 changed files with 0 additions and 66 deletions
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51
lib/common-functions
View File

@ -124,57 +124,6 @@ function eval_run_d () {
trap - ERR
}
# Usage: map_nbd $image
# Returns nbd device path
function map_nbd {
(lsmod | grep '^nbd ' >/dev/null) || sudo modprobe nbd max_part=16
if [[ $(qemu-nbd --help | grep cache) == *writeback* ]] ; then
CACHE="--cache=writeback"
else
echo "Warning: qemu-nbd without --cache=writeback is /slow/."
CACHE=""
fi
NBD_DEV=
for i in `seq 0 15`; do
if [ ! -e /sys/block/nbd$i/pid ]; then
NBD_DEV=/dev/nbd$i
# Connect to nbd and wait till it is ready
sudo qemu-nbd -c $NBD_DEV $CACHE $1
if ! timeout 60 sh -c "while ! [ -e /sys/block/nbd$i/pid ]; do sleep 1; done"; then
echo "Couldn't connect $NBD_DEV"
exit 1
fi
break
fi
done
if [ -z "$NBD_DEV" ]; then
echo "No free NBD slots"
exit 1
fi
}
# Delete and unmount the working dir used in extracting kernel/initrd
function unmount_qcow_image () {
sudo umount $WORK_DIR || true
sudo qemu-nbd -d $NBD_DEV >/dev/null || true
sudo rm -rf $WORK_DIR
trap - SIGHUP SIGINT SIGTERM EXIT
}
function mount_qcow_image() {
trap unmount_qcow_image SIGHUP SIGINT SIGTERM EXIT
WORK_DIR=$(mktemp -d)
map_nbd $1
if [ -e "${NBD_DEV}p1" ]; then
sudo mount ${NBD_DEV}p1 $WORK_DIR
else
sudo mount ${NBD_DEV} $WORK_DIR
fi
}
function cleanup_build_dir () {
if ! timeout 5 sh -c " while ! sudo rm -rf $TMP_BUILD_DIR/built; do sleep 1; done"; then
echo "ERROR: unable to cleanly remove $TMP_BUILD_DIR/built"

15
lib/img-functions
View File

@ -52,21 +52,6 @@ function cleanup () {
cleanup_image_dir
}
function ensure_nbd () {
NBD=`which qemu-nbd` || true
if [ -z "$NBD" ]; then
echo "qemu-nbd is not found in your PATH"
echo "Please install it on your system"
exit 1
fi
# prep nbd for mounting
(lsmod | grep '^nbd ' >/dev/null) || sudo modprobe nbd max_part=16
}
function ensure_sudo () {
sudo echo "Ensuring sudo is available"
}
# Helper function to run a command inside the chroot
function run_in_target () {
cmd="$@"