Merge lp:~cjwatson/livecd-rootfs/recursive-mount-dev

debian/changelog

@@ -3,6 +3,11 @@ livecd-rootfs (2.453) UNRELEASED; urgency=medium
   [ Chris Glass ]
   * Create vagrant user for vagrant image, per upstream requirements.
 
+  [ Colin Watson ]
+  * Mount and unmount /dev recursively, to cope with setups where there are
+    interesting bind-mounts under /dev (e.g. loop devices bind-mounted by
+    LXD).  LP: #1716465.
+
  -- Adam Conrad <adconrad@ubuntu.com>  Fri, 01 Sep 2017 10:53:46 -0600
 
 livecd-rootfs (2.452) artful; urgency=medium

live-build/functions

@@ -79,8 +79,7 @@ mount_image() {
 setup_mountpoint() {
     local mountpoint="$1"
 
-    mount --bind /dev "$mountpoint/dev"
+    mount --rbind /dev "$mountpoint/dev"
-    mount devpts-live -t proc "$mountpoint/dev/pts"
     mount proc-live -t proc "$mountpoint/proc"
     mount sysfs-live -t sysfs "$mountpoint/sys"
     mount -t tmpfs none "$mountpoint/tmp"
@@ -141,11 +140,7 @@ umount_settle() {
 umount_partition() {
     local mountpoint=${1}
     mv resolv.conf.tmp "$mountpoint/etc/resolv.conf"
-    for submnt in proc sys dev/pts dev tmp;
+    umount -R $mountpoint
-    do
-        umount $mountpoint/$submnt
-    done
-    umount $mountpoint
     udevadm settle
 
     if [ -n "${rootfs_dev_mapper}" -a -b "${rootfs_dev_mapper}" ]; then

live-build/ubuntu-cpc/hooks/032-root-squashfs.binary

@@ -39,8 +39,7 @@ chroot binary/boot/squashfs.dir dpkg-divert --remove --local --rename /usr/sbin/
 mv resolv.conf.tmp "binary/boot/squashfs.dir/etc/resolv.conf"
 umount "binary/boot/squashfs.dir/proc"
 umount "binary/boot/squashfs.dir/sys"
-umount "binary/boot/squashfs.dir/dev/pts"
+umount -R "binary/boot/squashfs.dir/dev"
-umount "binary/boot/squashfs.dir/dev"
 umount "binary/boot/squashfs.dir/tmp"
 
 squashfs_f="${PWD}/livecd.ubuntu-cpc.squashfs"

live-build/ubuntu-server/hooks/032-installer-squashfs.binary

@@ -155,8 +155,7 @@ umount "$SQUASH_ROOT"
 # Then we can start unmounting the "real" root:
 umount "binary/boot/squashfs.dir/proc"
 umount "binary/boot/squashfs.dir/sys"
-umount "binary/boot/squashfs.dir/dev/pts"
+umount -R "binary/boot/squashfs.dir/dev"
-umount "binary/boot/squashfs.dir/dev"
 umount "binary/boot/squashfs.dir/tmp"
 
 squashfs_f="${PWD}/livecd.${PROJECT}.installer.squashfs"