80 lines
1.3 KiB
Bash
80 lines
1.3 KiB
Bash
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#!/usr/bin/env bash
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help () {
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echo 'dchr-run <chroot-dir> <command>'
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echo 'https://dchr.dc09.ru'
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}
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clean () {
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echo '-- Cleaning up'
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umount "$1/proc"
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umount "$1/sys"
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umount "$1/dev"
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umount "$1/run"
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}
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error () {
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echo -e '-- \e[1;31mError\e[0m -- see output above'
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exit 1 # `trap` in main() calls cleanup function
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}
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setup () {
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echo '-- Mounting'
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mount -t proc /proc "$1/proc" || error
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mount -t sysfs /sys "$1/sys" || error
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mount -o bind /dev "$1/dev" || error
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mount -o bind /run "$1/run"
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}
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cphosts () {
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if ! [ -e "$1/etc/hosts" ]
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then
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echo '-- Copying hosts'
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cp /etc/hosts "$1/etc/hosts"
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fi
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if ! [ -e "$1/etc/resolv.conf" ]
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then
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echo '-- Copying resolv.conf'
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cp /etc/resolv.conf "$1/etc/resolv.conf"
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fi
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}
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runcmd () {
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echo -e '-- \e[1;32mOK\e[0m -- running chroot'
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chroot "$1" "$2"
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return $?
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}
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main () {
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if [[ "$1" == "--help" ]] || [[ "$1" == "" ]]
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then
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help
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exit 0
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fi
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chrdir="$(readlink -f "$1")"
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chrcmd="${2:-/bin/bash}"
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trap "clean $chrdir" EXIT
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setup "$chrdir"
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cphosts "$chrdir"
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runcmd "$chrdir" "$chrcmd"
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exit $?
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}
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sourced () {
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if [ -n "$ZSH_VERSION" ]
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then
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case $ZSH_EVAL_CONTEXT in
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*:file*) return 0;;
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esac
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elif [ -n "$BASH_VERSION" ]
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then
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! [ "$0" = "$BASH_SOURCE" ] && return 0
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fi
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return 1
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}
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sourced || main $@
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