feat(build_image): Generate lists of image contents

Index contents by file and package.

build_library/build_image_util.sh

@@ -117,6 +117,26 @@ systemd_enable() {
   sudo ln -sf "../${unit_file}" "${wants_dir}/${unit_alias}"
 }
 
+# Generate a ls-like listing of a directory tree.
+# The ugly printf is used to predictable time format and size in bytes.
+write_contents() {
+    info "Writing ${2##*/}"
+    pushd "$1" >/dev/null
+    sudo TZ=UTC find -printf \
+        '%M %2n %-7u %-7g %7s %TY-%Tm-%Td %TH:%TM ./%P -> %l\n' \
+        | sed -e 's/ -> $//' > "$2"
+    popd >/dev/null
+}
+
+# Generate a list of installed packages in the format:
+#   sys-apps/systemd-212-r8::coreos
+write_packages() {
+    info "Writing ${2##*/}"
+    ROOT="$1" equery-$BOARD --no-color \
+        list '*' --format '$cpv::$repo' \
+        > "$2"
+}
+
 start_image() {
   local image_name="$1"
   local disk_layout="$2"
@@ -152,6 +172,7 @@ start_image() {
 finish_image() {
   local disk_layout="$1"
   local root_fs_dir="$2"
+  local image_contents="$3"
 
   # Record directories installed to the state partition.
   # Explicitly ignore entries covered by existing configs.
@@ -182,6 +203,8 @@ finish_image() {
         "user-cloudinit@.path" "user-cloudinit@${unit_path}.path"
   fi
 
+  write_contents "${root_fs_dir}" "${BUILD_DIR}/${image_contents}"
+
   # Zero all fs free space to make it more compressible so auto-update
   # payloads become smaller, not fatal since it won't work on linux < 3.2
   sudo fstrim "${root_fs_dir}" || true

build_library/dev_image_util.sh

@@ -66,10 +66,13 @@ create_dev_image() {
 
   info "Building developer image ${image_name}"
   local root_fs_dir="${BUILD_DIR}/rootfs"
+  local image_contents="${image_name%.bin}_contents.txt"
+  local image_packages="${image_name%.bin}_packages.txt"
 
   start_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${update_group}"
 
   emerge_to_image "${root_fs_dir}" coreos-base/coreos-dev
+  write_packages "${root_fs_dir}" "${BUILD_DIR}/${image_packages}"
 
   # Setup portage for emerge and gmerge
   configure_dev_portage "${root_fs_dir}" "${devserver}"
@@ -92,7 +95,9 @@ EOF
   # The remount services are provided by coreos-base/coreos-init
   systemd_enable "${root_fs_dir}" "local-fs.target" "remount-usr.service"
 
-  finish_image "${disk_layout}" "${root_fs_dir}"
+  finish_image "${disk_layout}" "${root_fs_dir}" "${image_contents}"
   upload_image -d "${BUILD_DIR}/${image_name}.bz2.DIGESTS" \
+      "${BUILD_DIR}/${image_contents}" \
+      "${BUILD_DIR}/${image_packages}" \
       "${BUILD_DIR}/${image_name}"
 }

build_library/prod_image_util.sh

@@ -32,12 +32,15 @@ create_prod_image() {
 
   info "Building production image ${image_name}"
   local root_fs_dir="${BUILD_DIR}/rootfs"
+  local image_contents="${image_name%.bin}_contents.txt"
+  local image_packages="${image_name%.bin}_packages.txt"
 
   start_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${update_group}"
 
   # Install minimal GCC (libs only) and then everything else
   emerge_prod_gcc "${root_fs_dir}"
   emerge_to_image "${root_fs_dir}" coreos-base/coreos
+  write_packages "${root_fs_dir}" "${BUILD_DIR}/${image_packages}"
 
   # clean-ups of things we do not need
   sudo rm ${root_fs_dir}/etc/csh.env
@@ -69,7 +72,7 @@ EOF
     disable_read_write=${FLAGS_FALSE}
   fi
 
-  finish_image "${disk_layout}" "${root_fs_dir}"
+  finish_image "${disk_layout}" "${root_fs_dir}" "${image_contents}"
 
   # Make the filesystem un-mountable as read-write.
   if [[ ${disable_read_write} -eq ${FLAGS_TRUE} ]]; then
@@ -78,5 +81,7 @@ EOF
   fi
 
   upload_image -d "${BUILD_DIR}/${image_name}.bz2.DIGESTS" \
+      "${BUILD_DIR}/${image_contents}" \
+      "${BUILD_DIR}/${image_packages}" \
       "${BUILD_DIR}/${image_name}"
 }