mirror of
https://github.com/outbackdingo/scratchpkg.git
synced 2026-02-05 08:28:00 +00:00
91 lines
1.5 KiB
Bash
Executable File
91 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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printhelp() {
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cat << EOF
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Usage:
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$(basename $0) <chroot-dir> [command]
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If 'command' is unspecified, ${0##*/} will launch /bin/sh.
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EOF
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}
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msgerr() {
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echo "ERROR: $*"
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}
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[ "$(id -u)" = "0" ] || {
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msgerr "$(basename $0) need root access!"
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printhelp
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exit 1
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}
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TARGET=$1
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[ "$1" ] || {
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msgerr "Please set directory for chroot!"
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printhelp
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exit 1
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}
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[ -d "$TARGET" ] || {
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msgerr "Directory '$TARGET' not exist!"
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printhelp
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exit 1
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}
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shift
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if [ ! "$1" ]; then
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CMD="/bin/sh"
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else
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CMD=$*
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fi
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if [ -e /sys/firmware/efi/systab ]; then
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EFI_SYSTEM=1
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fi
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mount --bind /dev $TARGET/dev
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mount -t devpts devpts $TARGET/dev/pts -o gid=5,mode=620
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mount -t proc proc $TARGET/proc
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mount -t sysfs sysfs $TARGET/sys
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if [ -n "$EFI_SYSTEM" ]; then
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mount --bind /sys/firmware/efi/efivars $TARGET/sys/firmware/efi/efivars
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fi
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mount -t tmpfs tmpfs $TARGET/run
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if [ -h $TARGET/dev/shm ]; then
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mkdir -p $TARGET/$(readlink $TARGET/dev/shm)
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fi
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[ -f $TARGET/etc/resolv.conf ] && {
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backupresolvconf=1
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mv $TARGET/etc/resolv.conf $TARGET/etc/resolv.conf.tmp
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}
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cp -L /etc/resolv.conf $TARGET/etc
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chroot "$TARGET" /usr/bin/env -i \
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HOME=/root \
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TERM="$TERM" \
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PS1='\u:\w\$ ' \
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PATH=/bin:/usr/bin:/sbin:/usr/sbin $CMD
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retval=$?
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[ "$backupresolvconf" = 1 ] && {
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mv $TARGET/etc/resolv.conf.tmp $TARGET/etc/resolv.conf
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}
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umount -l $TARGET/dev/pts
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umount -l $TARGET/dev
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umount -l $TARGET/run
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umount -l $TARGET/proc
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if [ -n "$EFI_SYSTEM" ]; then
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umount -l $TARGET/sys/firmware/efi/efivars
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fi
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umount -l $TARGET/sys
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exit $retval
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