mirror of
https://github.com/ItsDrike/dotfiles.git
synced 2024-09-20 13:49:40 +00:00
68 lines
2.1 KiB
Bash
Executable file
68 lines
2.1 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
if [ "$EUID" -ne 0 ]; then
|
|
echo "Must be ran as root"
|
|
exit
|
|
fi
|
|
|
|
# Take user on the chrooted machine as 1st argument,
|
|
# this will be the logged user after chroot,
|
|
# default to root if none provided
|
|
if [ $# -ge 1 ]; then
|
|
USERNAME="$1"
|
|
else
|
|
USERNAME="root"
|
|
fi
|
|
|
|
MOUNT_POINT="/mnt/gentoo"
|
|
CLIENT_SCRIPT="/usr/local/bin/chroot-client"
|
|
|
|
# Make sure the partition is mounted according to fstab
|
|
mount "$MOUNT_POINT" 2> /dev/null
|
|
|
|
# Mount necessary directories for chroot to be possible
|
|
mount --types proc /proc "$MOUNT_POINT/proc"
|
|
mount --rbind /sys "$MOUNT_POINT/sys"
|
|
mount --make-rslave "$MOUNT_POINT/sys"
|
|
mount --rbind /dev "$MOUNT_POINT/dev"
|
|
mount --make-rslave "$MOUNT_POINT/dev"
|
|
|
|
# Chroot with custom script, if aviable
|
|
if [ -f "$MOUNT_POINT/$CLIENT_SCRIPT" ]; then
|
|
chroot "$MOUNT_POINT" "$CLIENT_SCRIPT" "$USERNAME"
|
|
else
|
|
# If we didn't find the script in the chroot environment
|
|
# try to find it in this mahcine and copy it over
|
|
if [ -f "$CLIENT_SCRIPT" ]; then
|
|
echo "Client script not in chroot environment, copying"
|
|
mkdir -p "$MOUNT_POINT/$(dirname $CLIENT_SCRIPT)"
|
|
cp "$CLIENT_SCRIPT" "$MOUNT_POINT/$CLIENT_SCRIPTt"
|
|
chroot "$MOUNT_POINT" "$CLIENT_SCRIPT" "$USERNAME"
|
|
else
|
|
echo "Unable to run chroot client script, proceeding manually"
|
|
echo "You may need to run 'source /etc/profile' afterwards"
|
|
|
|
# Try to obtain chroot user's default shell from /etc/passwd
|
|
awkstring="BEGIN { FS=\":\" } /$USERNAME/ { print \$7 }"
|
|
shell="$(cat /etc/passwd | awk "$awkstring")"
|
|
|
|
if [ -n "$shell" ]; then
|
|
echo "Found user's shell, trying to chroot with it ($shell)"
|
|
chroot "$MOUNT_POINT" "$shell" --login
|
|
else
|
|
echo "Unable to find user in chroot's /etc/passwd, using root with bash shell"
|
|
chroot "$MOUNT_POINT" "/bin/bash" --login
|
|
fi
|
|
|
|
fi
|
|
fi
|
|
|
|
# Unmount recursively mounted directories
|
|
umount -l "$MOUNT_POINT/dev{/shm,/pts,}"
|
|
umount -R "$MOUNT_POINT"
|
|
|
|
# Remount partition accordingly to fstab
|
|
# (the above umountings will unmount gentoo completely,
|
|
# which means that remounting is necessary)
|
|
mount "$MOUNT_POINT"
|