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- Committer: Mark Grant
- Date: 2020-11-29 14:25:58 UTC
- mfrom: (1.1.6)
- Revision ID: m.grant.prg@gmail.com-20201129142558-c2jhqvixk9hnylhj
Merge new upstream release.
- files added:
- src/man/1/lxcu/lxcu-copy.sh.1.man.in
- files removed:
- src/conf/etc/lxcu/debian/apt/sources.list.d/hermes.list.in
- files modified:
- ChangeLog
added
removed
src/prg/bash/lxcu/lxcu-copy.sh.in
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#! @bashlocation@
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#########################################################################
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# #
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# lxcu-copy.sh is automatically generated, #
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# please do not modify! #
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# #
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#########################################################################
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#########################################################################
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# #
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# Script ID: lxcu-copy.sh #
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# Author: Copyright (C) 2020 Mark Grant #
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# #
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# Released under the GPLv3 only. #
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# SPDX-License-Identifier: GPL-3.0 #
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# #
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# Purpose: #
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# A script to copy an existing container to a new container. The only #
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# extra thing this does compared to an lxc-copy is that it will create #
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# any extra lxcu bridge config files. #
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# #
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# Syntax: lxcu-copy.sh [ -h or --help #
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# || -n or --from-name 'container name' copy from #
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# || -N or --to-name 'container name' copy to #
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# || -V or --version ] #
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# #
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# Exit codes used:- #
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# Bash standard Exit Codes: 0 - success #
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# 1 - general failure #
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# User-defined exit code range is 64 - 113 #
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# C/C++ Semi-standard exit codes from sysexits.h range is 64 - 78 #
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# EX_USAGE 64 command line usage error #
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# EX_DATAERR 65 data format error #
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# EX_NOINPUT 66 cannot open input #
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# EX_NOUSER 67 addressee unknown #
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# EX_NOHOST 68 host name unknown #
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# EX_UNAVAILABLE 69 service unavailable #
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# EX_SOFTWARE 70 internal software error #
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# EX_OSERR 71 system error (e.g., can't fork) #
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# EX_OSFILE 72 critical OS file missing #
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# EX_CANTCREAT 73 can't create (user) output file #
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# EX_IOERR 74 input/output error #
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# EX_TEMPFAIL 75 temp failure; user is invited #
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# to retry #
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# EX_PROTOCOL 76 remote error in protocol #
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# EX_NOPERM 77 permission denied #
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# EX_CONFIG 78 configuration error #
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# User-defined (here) exit codes range 79 - 113: #
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# None #
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# #
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# Further Info: #
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# #
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#########################################################################
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#########################################################################
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# #
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# Changelog #
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# #
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# Date Author Version Description #
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# #
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# 21/11/2020 MG 1.0.1 Created. #
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# #
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#########################################################################
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set -o pipefail
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##################
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# Init variables #
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##################
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readonly outputprefix="$(basename $0):"
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readonly version=1.0.1 # Script version
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readonly packageversion=@pkgversion@ # Package version
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readonly etclocation=@sysconfdir@/lxcu # Path to config directory
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#############
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# Functions #
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#############
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# -h --help output.
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# No parameters
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# No return value
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usage()
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{
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cat << EOF
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Usage is $0 [options]
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-h or --help Display this help information
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-n or --from-name 'container name'
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-N or --to-name 'container name'
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-V or --version Print script version information
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EOF
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}
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# Standard function to emit messages depending on various parameters.
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# Parameters - $1 What:- The message to emit.
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# $2 Where:- stdout == 0
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# stderr == 1
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# No return value.
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output()
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{
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if (( !$2 )); then
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printf "%s\n" "$1"
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else
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printf "%s\n" "$1" 1>&2
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fi
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}
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# Standard function to tidy up and return exit code.
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# Parameters - $1 is the exit code.
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# No return value.
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script_exit()
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{
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exit $1
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}
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# Standard function to test command error and exit if non-zero.
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# Parameters - $1 is the exit code, (normally $? from the preceeding command).
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# No return value.
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std_cmd_err_handler()
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{
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if (( $1 )); then
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script_exit $1
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fi
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}
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# Standard trap exit function.
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# No parameters.
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# No return value.
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trap_exit()
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{
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local -i exit_code=$?
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local msg
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msg="Script terminating with exit code $exit_code due to trap received."
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output "$msg" 1
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script_exit $exit_code
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}
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# Setup trap
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trap trap_exit SIGHUP SIGINT SIGQUIT SIGTERM
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# Process the config file just for the parameters of interest.
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# Parameters - None
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# No return value.
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proc_config_file()
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{
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local input=()
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local oldIFS=$IFS
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IFS="="
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exec 3<"$etclocation/lxcu.conf"
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while read -u3 -ra input; do
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case ${input[0]} in
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bridge)
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bridge=${input[1]}
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;;
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contlocation)
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contlocation=$(echo ${input[1]} | envsubst)
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;;
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esac
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done
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exec 3<&-
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IFS=$oldIFS
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}
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# Process command line arguments with GNU getopt.
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# Parameters - $1 is the command line.
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# No return value.
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proc_CL()
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{
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local GETOPTTEMP
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local msg
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local tmp
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tmp="getopt -o hn:N:V --long dist:,help,from-name:,to-name:,version"
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GETOPTTEMP=$($tmp -n "$0" -- "$@")
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std_cmd_err_handler $?
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eval set -- "$GETOPTTEMP"
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std_cmd_err_handler $?
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while true; do
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case "$1" in
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-h|--help)
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usage
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shift
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script_exit 0
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;;
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-n|--from-name)
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fromname=$2
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shift 2
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;;
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-N|--to-name)
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toname=$2
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shift 2
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;;
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-V|--version)
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printf "%s Script version %s\n" $0 $version
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printf "%s Package version %s\n" $0 $packageversion
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shift
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script_exit 0
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;;
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--) shift
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break
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;;
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*) output "Internal error." 1
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script_exit 64
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;;
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esac
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done
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# Script does not accept other arguments.
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if (( $# > 0 )); then
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output "Invalid argument." 1
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script_exit 64
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fi
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# Both from name and to name must be specified.
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if [[ -z $fromname || -z $toname ]]; then
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msg="Both from name and to name must be specified."
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output "$msg" 1
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script_exit 64
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fi
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}
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########
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# Main #
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########
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proc_config_file
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proc_CL "$@"
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lxc-copy -n $fromname -N $toname
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std_cmd_err_handler $?
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# Any bridge to provide a config file for?
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if [[ -n $bridge ]]; then
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cp -v $contlocation/$fromname/config-$bridge \
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$contlocation/$toname
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std_cmd_err_handler $?
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sed -i -e "/lxc.rootfs.path = dir:/s/$fromname/$toname/" \
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$contlocation/$toname/config-$bridge
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std_cmd_err_handler $?
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sed -i -e "/lxc.uts.name = /s/$fromname/$toname/" \
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$contlocation/$toname/config-$bridge
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std_cmd_err_handler $?
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fi
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# Correct host name on target container.
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lxcu-start.sh -n $toname
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std_cmd_err_handler $?
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lxc-attach -n $toname sudo sed -- -i -e "s/$fromname/$toname/" /etc/hostname
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std_cmd_err_handler $?
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lxc-attach -n $toname sudo sed -- -i -e "s/$fromname/$toname/" /etc/hosts
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std_cmd_err_handler $?
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lxc-stop -n $toname
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std_cmd_err_handler $?
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# And exit.
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script_exit 0
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