* Imported tools to dump information about files in a container.

The "dump-info" tool works only for Debian-based distro for now.
master
Wirawan Purwanto 2 years ago
parent e828a16a49
commit 9edb1e040d
  1. 68
      containers/simg-dump-info-Debian.sh
  2. 29
      containers/simg-list-all-files.sh

@ -0,0 +1,68 @@
#!/bin/bash
#
# Tool to dump info from a singularity image
# Run this as "root" from _inside_ the container image,
# because it will interrogate the system using the image's
# contained files.
#
# This is for Debian-based image
#
# Usage:
# simg-dump-info.sh INFO_DIR CONT_NAME [IMAGE_ROOT_DIR]
#
# INFO_DIR is the location to dump the info files
# CONT_NAME is the name of the container (to be used as the basenames)
#
# Info dumped so far:
# - ${CONT_NAME}.files - actual list of files
# - ${CONT_NAME}.files-dpkg - registration of files according to dpkg
# - ${CONT_NAME}.lists-dpkg.tar - registration of files according to dpkg
# (individual list files)
# - ${CONT_NAME}.dpkg-l - list of installed packages
_simg_list_all_files () {
local ROOT_DIR="${1:-.}"
find "$ROOT_DIR" -mount \
| sort \
| awk -v ROOT="$ROOT_DIR" '
BEGIN {
ROOTX = ROOT
gsub(/\/+$/, "", ROOTX)
ROOTX = (ROOTX "/")
len_ROOTX = length(ROOTX)
}
$0 == ROOT { next }
(substr($0, 1, len_ROOTX) == ROOTX) {
print(substr($0, len_ROOTX))
next
}
'
}
set -e
MYSELF=$0
MYDIR=$(dirname "$MYSELF")
INFO_DIR=${1:?INFO_DIR required as arg 1}
CONT_NAME=${2:?CONT_NAME required as arg 2}
CONT_IMAGE_ROOT_DIR=${3:-/}
# Get the view of the files *ACTUALLY* residing in the container
_simg_list_all_files "${CONT_IMAGE_ROOT_DIR}" > "${INFO_DIR}/${CONT_NAME}.files"
dpkg -l > "${INFO_DIR}/${CONT_NAME}.dpkg-l"
# Get the view of files registered to dpkg
# (In some containers the files do not exist there because they
# were somehow deleted, e.g. doc files, man pages, ...)
(
cd /var/lib/dpkg/info
tar cf "${INFO_DIR}/${CONT_NAME}.lists-dpkg.tar" *.list
cat *.list | sort | uniq > "${INFO_DIR}/${CONT_NAME}.dpkg-files"
)

@ -0,0 +1,29 @@
#!/bin/bash
# Dumps all the filenames on the container.
# By default, run this on the root directory of the container.
# This tool does NOT assume that the root directory is "/"
# to allow access to sandbox _outside_ the container itself.
# All external mount points are ignored.
_simg_list_all_files () {
local ROOT_DIR="${1:-.}"
find "$ROOT_DIR" -mount \
| sort \
| awk -v ROOT="$ROOT_DIR" '
BEGIN {
ROOTX = ROOT
gsub(/\/+$/, "", ROOTX)
ROOTX = (ROOTX "/")
len_ROOTX = length(ROOTX)
}
$0 == ROOT { next }
(substr($0, 1, len_ROOTX) == ROOTX) {
print(substr($0, len_ROOTX))
next
}
'
}
_simg_list_all_files "$@"
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