mirror of
https://github.com/erenfro/gen2stage4.git
synced 2024-11-23 15:05:33 -05:00
288 lines
7.5 KiB
Bash
Executable file
288 lines
7.5 KiB
Bash
Executable file
#!/usr/bin/env bash
|
|
|
|
# get available compression types
|
|
declare -A compressTypes
|
|
compressTypes=(
|
|
["bz2"]="bzip2 pbzip2 lbzip2"
|
|
["gz"]="gzip pigz"
|
|
["lrz"]="lrzip"
|
|
["lz"]="lzip plzip"
|
|
["lz4"]="lz4"
|
|
["lzo"]="lzop"
|
|
["xz"]="xz pixz"
|
|
["zst"]="zstd"
|
|
)
|
|
declare -A compressAvail
|
|
for ext in "${!compressTypes[@]}"; do
|
|
for exechk in ${compressTypes[${ext}]}; do
|
|
binchk=$(command -v "${exechk}")
|
|
if [[ -n "$binchk" ]]; then
|
|
compressAvail+=(["${ext}"]="$binchk")
|
|
fi
|
|
done
|
|
done
|
|
|
|
# set flag variables to null/default
|
|
optExcludeBoot=false
|
|
optExcludeConfidential=false
|
|
optExcludeLost=true
|
|
optQuiet=false
|
|
optUserExclude=()
|
|
optUserInclude=()
|
|
optCompressType="xz"
|
|
optSeperateKernel=false
|
|
|
|
|
|
function showHelp() {
|
|
echo "Usage:"
|
|
echo "$(basename "$0") [-b -c -k -l -q] [-C <type>] [-s || -t <target>] [-e <exclude>...] [-i <include>...] <archive> [-- [tar-opts]]"
|
|
echo "Position Arguments:"
|
|
echo " <archive> archive name to create with optional path"
|
|
echo " [tar-opts] additional options to pass to tar command"
|
|
echo
|
|
echo "Options:"
|
|
echo " -b excludes boot directory"
|
|
echo " -c excludes some confidential files (currently only .bash_history and connman network lists)"
|
|
echo " -k separately save current kernel modules and src (creates smaller targetArchives and saves decompression time)"
|
|
echo " -l includes lost+found directory"
|
|
echo " -q activates quiet mode (no confirmation)"
|
|
echo " -C <type> specify tar compression (default: ${optCompressType}, available: ${!compressAvail[*]})"
|
|
echo " -s makes archive of current system"
|
|
echo " -t <path> makes archive of system located at the <path>"
|
|
echo " -e <exclude> an additional exclude directory (one dir one -e, do not use it with *)"
|
|
echo " -i <include> an additional include. This has higher precedence than -e, -t, and -s"
|
|
echo " -h display this help message."
|
|
|
|
if [[ "$1" -ge 0 ]]; then
|
|
exit "$1"
|
|
else
|
|
exit 0
|
|
fi
|
|
}
|
|
|
|
function errorMsg() {
|
|
local rc=0
|
|
|
|
if [[ "$1" -gt 0 ]]; then
|
|
rc="$1"
|
|
shift
|
|
fi
|
|
|
|
echo "$*" >&2
|
|
|
|
if [[ "$rc" -gt 0 ]]; then
|
|
exit "$rc"
|
|
fi
|
|
}
|
|
|
|
|
|
# reads options:
|
|
tarArgs=()
|
|
while [[ $# -gt 0 ]]; do
|
|
while getopts ":t:C:e:i:skqcblh" flag; do
|
|
case "$flag" in
|
|
t) targetPath="$OPTARG";;
|
|
s) targetPath="/";;
|
|
C) optCompressType="$OPTARG";;
|
|
q) optQuiet=true;;
|
|
k) optSeperateKernel=true;;
|
|
c) optExcludeConfidential=true;;
|
|
b) optExcludeBoot=true;;
|
|
l) optExcludeLost=false;;
|
|
e) optUserExclude+=("${OPTARG}");;
|
|
i) optUserInclude+=("$OPTARG");;
|
|
h) showHelp 0;;
|
|
\?) errorMsg 1 "Invalid option: -$OPTARG";;
|
|
:) errorMsg 1 "Option -$OPTARG requires an argument.";;
|
|
esac
|
|
done || exit 1
|
|
|
|
[[ $OPTIND -gt $# ]] && break # reached the end of parameters
|
|
|
|
shift $((OPTIND - 1)) # Free processed options so far
|
|
OPTIND=1 # we must reset OPTIND
|
|
if [[ -z "$targetArchive" ]]; then
|
|
targetArchive=$1
|
|
else
|
|
tarArgs[${#tarArgs[*]}]=$1
|
|
fi
|
|
shift # remove saved arg
|
|
done
|
|
|
|
|
|
# checks if run as root:
|
|
if [[ "$(id -u)" -ne 0 ]]; then
|
|
echo "$(basename "$0"): must run as root"
|
|
exit 250
|
|
fi
|
|
|
|
if [[ -z "$targetPath" ]]; then
|
|
echo "$(basename "$0"): no system path specified"
|
|
exit 1
|
|
fi
|
|
|
|
# make sure targetPath path ends with slash
|
|
if [[ "$targetPath" != */ ]]; then
|
|
targetPath="${targetPath}/"
|
|
fi
|
|
|
|
# checks for correct output file specification
|
|
if [[ -z "$targetArchive" ]]; then
|
|
echo "$(basename "$0"): no archive file name specified"
|
|
exit 1
|
|
fi
|
|
|
|
# determines if filename was given with relative or absolute path
|
|
if [[ "$targetArchive" =~ ^\/.* ]]; then
|
|
stage4Filename="${targetArchive}"
|
|
else
|
|
stage4Filename="$(pwd)/${targetArchive}"
|
|
fi
|
|
|
|
# Check if compression in option and filename
|
|
if [[ -z "$optCompressType" ]]; then
|
|
echo "$(basename "$0"): no archive compression type specified"
|
|
exit 1
|
|
else
|
|
stage4Ext="tar.${optCompressType}"
|
|
fi
|
|
|
|
# Check if specified type is available
|
|
if [[ -z "${compressAvail[$optCompressType]}" ]]; then
|
|
echo "$(basename "$0"): specified archive compression type not supported."
|
|
echo "Supported: ${compressAvail[*]}"
|
|
exit 1
|
|
fi
|
|
|
|
# Check if using seperate kernel archive option
|
|
if $optSeperateKernel; then
|
|
optUserExclude+=("${targetPath}usr/src/*")
|
|
optUserExclude+=("${targetPath}lib*/modules/*")
|
|
fi
|
|
|
|
# tarExcludes:
|
|
tarExcludes=(
|
|
"dev/*"
|
|
"var/tmp/*"
|
|
"media/*"
|
|
"mnt/*/*"
|
|
"proc/*"
|
|
"run/*"
|
|
"sys/*"
|
|
"tmp/*"
|
|
"var/lock/*"
|
|
"var/log/*"
|
|
"var/run/*"
|
|
"var/lib/docker/*"
|
|
"var/lib/containers/*"
|
|
"var/lib/machines/*"
|
|
"var/lib/libvirt/*"
|
|
"var/lib/lxd/*"
|
|
"home/*/*"
|
|
)
|
|
|
|
tarExcludesPortage=(
|
|
"var/db/repos/*/*"
|
|
"var/cache/distfiles/*"
|
|
"var/cache/binpkgs/*"
|
|
"usr/portage/*"
|
|
)
|
|
|
|
tarIncludes=(
|
|
"dev/console"
|
|
"dev/null"
|
|
"var/db/pkg/*"
|
|
)
|
|
|
|
tarExcludes=("${tarExcludes[@]/#/"$targetPath"}")
|
|
tarIncludes=("${tarIncludes[@]/#/"$targetPath"}")
|
|
|
|
if [[ "$targetPath" == '/' ]]; then
|
|
tarExcludes+=("$(realpath "${stage4Filename}")*")
|
|
if command -v portageq &>/dev/null; then
|
|
portageRepos=$(portageq get_repos /)
|
|
for i in ${portageRepos}; do
|
|
repoPath=$(portageq get_repo_path / "${i}")
|
|
tarExcludes+=("${repoPath}/*")
|
|
done
|
|
tarExcludes+=("$(portageq distdir)/*")
|
|
tarExcludes+=("$(portageq pkgdir)/*")
|
|
else
|
|
tarExcludes+=("${tarExcludesPortage[@]/#/"/"}")
|
|
fi
|
|
else
|
|
tarExcludes+=("${tarExcludesPortage[@]/#/"$targetPath"}")
|
|
fi
|
|
|
|
if $optExcludeConfidential; then
|
|
tarExcludes+=("${targetPath}home/*/.bash_history")
|
|
tarExcludes+=("${targetPath}root/.bash_history")
|
|
tarExcludes+=("${targetPath}var/lib/connman/*")
|
|
fi
|
|
|
|
if $optExcludeBoot; then
|
|
tarExcludes+=("${targetPath}boot/*")
|
|
fi
|
|
|
|
if $optExcludeLost; then
|
|
tarExcludes+=("lost+found")
|
|
fi
|
|
|
|
tarExcludes+=("${optUserExclude[@]}")
|
|
tarIncludes+=("${optUserInclude[@]}")
|
|
|
|
# Compression options
|
|
compressOptions=("${compressAvail[$optCompressType]}")
|
|
case "$(basename "${compressAvail[$optCompressType]}")" in
|
|
xz) compressOptions+=("-T0");;
|
|
zstd) compressOptions+=("-T0");;
|
|
esac
|
|
|
|
# Generic tar options:
|
|
tarOptions=(
|
|
"-cpP"
|
|
"--ignore-failed-read"
|
|
"--xattrs-include=*.*"
|
|
"--numeric-owner"
|
|
"--checkpoint=.500"
|
|
"--use-compress-prog=${compressOptions[*]}"
|
|
)
|
|
|
|
tarOptions+=("${tarArgs[@]}")
|
|
|
|
|
|
# if not in optQuiet mode, this message will be displayed:
|
|
if ! $optQuiet; then
|
|
echo "Are you sure that you want to make a stage 4 tarball of the system"
|
|
echo "located under the following directory?"
|
|
echo "$targetPath"
|
|
echo
|
|
echo "WARNING: since all data is saved by default the user should exclude all"
|
|
echo "security- or privacy-related files and directories, which are not"
|
|
echo "already excluded by gen2stage4 options (such as -c), manually per cmdline."
|
|
echo "example: \$ $(basename "$0") -s /my-backup --exclude=/etc/ssh/ssh_host*"
|
|
echo
|
|
echo "COMMAND LINE PREVIEW:"
|
|
echo 'tar' "${tarOptions[@]}" "${tarExcludes[@]/#/--exclude=}" -f "${stage4Filename}.${stage4Ext}" "${targetPath}" "${tarIncludes[@]}"
|
|
if $optSeperateKernel; then
|
|
echo
|
|
echo 'tar' "${tarOptions[@]}" -f "${stage4Filename}.ksrc.${stage4Ext}" "${targetPath}usr/src/linux-$(uname -r)"
|
|
echo 'tar' "${tarOptions[@]}" -f "${stage4Filename}.kmod.${stage4Ext}" "${targetPath}lib"*"/modules/$(uname -r)"
|
|
fi
|
|
echo
|
|
echo -n 'Type "yes" to continue or anything else to quit: '
|
|
read -r promptAgree
|
|
if [[ "${promptAgree,,}" == "yes" ]]; then
|
|
optQuiet=true
|
|
fi
|
|
fi
|
|
|
|
# start stage4 creation:
|
|
if $optQuiet; then
|
|
tar "${tarOptions[@]}" "${tarIncludes[@]}" "${tarExcludes[@]/#/--exclude=}" -f "${stage4Filename}.${stage4Ext}" "${targetPath}"
|
|
if [[ "$optSeperateKernel" ]]
|
|
then
|
|
tar "${tarOptions[@]}" -f "${stage4Filename}.ksrc.${stage4Ext}" "${targetPath}usr/src/linux-$(uname -r)"
|
|
tar "${tarOptions[@]}" -f "${stage4Filename}.kmod.${stage4Ext}" "${targetPath}lib"*"/modules/$(uname -r)"
|
|
fi
|
|
fi
|