77 lines
1.9 KiB
Bash
77 lines
1.9 KiB
Bash
#! @runtimeShell@
|
|
|
|
set -e
|
|
|
|
# Re-exec ourselves in a private mount namespace so that our bind
|
|
# mounts get cleaned up automatically.
|
|
if [ -z "$NIXOS_ENTER_REEXEC" ]; then
|
|
export NIXOS_ENTER_REEXEC=1
|
|
if [ "$(id -u)" != 0 ]; then
|
|
extraFlags="-r"
|
|
fi
|
|
exec unshare --fork --mount --uts --mount-proc --pid $extraFlags -- "$0" "$@"
|
|
else
|
|
mount --make-rprivate /
|
|
fi
|
|
|
|
mountPoint=/mnt
|
|
system=/nix/var/nix/profiles/system
|
|
command=("$system/sw/bin/bash" "--login")
|
|
silent=0
|
|
|
|
while [ "$#" -gt 0 ]; do
|
|
i="$1"; shift 1
|
|
case "$i" in
|
|
--root)
|
|
mountPoint="$1"; shift 1
|
|
;;
|
|
--system)
|
|
system="$1"; shift 1
|
|
;;
|
|
--help)
|
|
exec man nixos-enter
|
|
exit 1
|
|
;;
|
|
--command|-c)
|
|
command=("$system/sw/bin/bash" "-c" "$1")
|
|
shift 1
|
|
;;
|
|
--silent)
|
|
silent=1
|
|
;;
|
|
--)
|
|
command=("$@")
|
|
break
|
|
;;
|
|
*)
|
|
echo "$0: unknown option \`$i'"
|
|
exit 1
|
|
;;
|
|
esac
|
|
done
|
|
|
|
if [[ ! -e $mountPoint/etc/NIXOS ]]; then
|
|
echo "$0: '$mountPoint' is not a NixOS installation" >&2
|
|
exit 126
|
|
fi
|
|
|
|
mkdir -p "$mountPoint/dev" "$mountPoint/sys"
|
|
chmod 0755 "$mountPoint/dev" "$mountPoint/sys"
|
|
mount --rbind /dev "$mountPoint/dev"
|
|
mount --rbind /sys "$mountPoint/sys"
|
|
|
|
(
|
|
# If silent, write both stdout and stderr of activation script to /dev/null
|
|
# otherwise, write both streams to stderr of this process
|
|
if [ "$silent" -eq 1 ]; then
|
|
exec 2>/dev/null
|
|
fi
|
|
|
|
# Run the activation script. Set $LOCALE_ARCHIVE to supress some Perl locale warnings.
|
|
LOCALE_ARCHIVE="$system/sw/lib/locale/locale-archive" IN_NIXOS_ENTER=1 chroot "$mountPoint" "$system/activate" 1>&2 || true
|
|
|
|
# Create /tmp
|
|
chroot "$mountPoint" systemd-tmpfiles --create --remove --exclude-prefix=/dev 1>&2 || true
|
|
)
|
|
|
|
exec chroot "$mountPoint" "${command[@]}"
|