forked from kiss-community/kiss
72 lines
1.8 KiB
Bash
Executable File
72 lines
1.8 KiB
Bash
Executable File
#!/bin/sh -e
|
|
# Enter a kiss chroot
|
|
|
|
log() {
|
|
printf '\033[32m->\033[m %s.\n' "$*"
|
|
}
|
|
|
|
die() {
|
|
log "$*" >&2
|
|
exit 1
|
|
}
|
|
|
|
clean() {
|
|
log Unmounting /dev, /proc and /sys from chroot; {
|
|
umount "$1/sys/firmware/efi/efivars" 2>/dev/null ||:
|
|
umount "$1/dev" ||:
|
|
umount "$1/proc" ||:
|
|
umount "$1/sys" ||:
|
|
}
|
|
|
|
log Cleaning leftover host files; {
|
|
rm -f "$1/root/.ash_history"
|
|
rm -f "$1/etc/resolv.conf"
|
|
}
|
|
}
|
|
|
|
mounted() {
|
|
# This is a pure shell mountpoint implementation. We're dealing
|
|
# with basic (and fixed/known) input so this doesn't need to
|
|
# handle more complex cases.
|
|
[ -e "$1" ] || return 1
|
|
[ -e /proc/mounts ] || return 1
|
|
|
|
while read -r _ target _; do
|
|
[ "$target" = "$1" ] && return 0
|
|
done < /proc/mounts
|
|
|
|
return 1
|
|
}
|
|
|
|
[ -z "$1" ] && die Need a path to the chroot
|
|
[ -d "$1" ] || die Given path does not exist
|
|
[ "$(id -u)" = 0 ] || die Script needs to be run as root
|
|
|
|
trap 'clean "$1"' EXIT INT
|
|
|
|
log Mounting /dev, /proc and /sys from host; {
|
|
mounted "$1/dev" || mount -o bind /dev "$1/dev"
|
|
mounted "$1/proc" || mount -t proc proc "$1/proc"
|
|
mounted "$1/sys" || mount -t sysfs sys "$1/sys"
|
|
|
|
mounted "$1/sys/firmware/efi/efivars" ||
|
|
mount -t efivarfs efivarfs "$1/sys/firmware/efi/efivars" 2>/dev/null ||:
|
|
}
|
|
|
|
log Copying /etc/resolv.conf from host; {
|
|
cp -f /etc/resolv.conf "$1/etc"
|
|
}
|
|
|
|
log Entering chroot; {
|
|
chroot "$1" /usr/bin/env -i \
|
|
HOME=/root \
|
|
TERM="$TERM" \
|
|
SHELL=/bin/sh \
|
|
USER=root \
|
|
KISS_ASROOT=1 \
|
|
CFLAGS="${2:--march=x86-64 -mtune=generic -pipe -Os}" \
|
|
CXXFLAGS="${2:--march=x86-64 -mtune=generic -pipe -Os}" \
|
|
MAKEFLAGS="-j$(nproc 2>/dev/null || echo 1)" \
|
|
/bin/sh -l
|
|
}
|