[librechroot] have -n set the CHROOT; rename the old -n to -m

https://labs.parabola.nu/issues/252

1 files changed, 14 insertions, 9 deletions

diff --git a/src/chroot-tools/librechroot b/src/chroot-tools/librechroot
index 8e57004..e93c57e 100755
--- a/src/chroot-tools/librechroot
+++ b/src/chroot-tools/librechroot
@@ -30,13 +30,14 @@
 
 cmd=${0##*/}
 usage() {
-	echo "Usage: $cmd [OPTIONS] [CHROOT] "
+	echo "Usage: $cmd [OPTIONS] "
 	echo 'Interacts with a chroot.'
 	echo ''
 	echo "The default CHROOT is \`${CHROOT}'."
 	echo ''
 	echo 'Options:'
 	echo ' Settings:'
+	echo " -n <CHROOT>     Use this chroot instead of \`$CHROOT'"
 	echo ' -l <COPY>       Use this as the chroot copy instead of basing it'
 	echo '                 on the username'
 	echo ' -N              Disable networking in the chroot'
@@ -46,7 +47,7 @@ usage() {
 	echo ' -c              Clean the packages installed in the chroot'
 	echo ' -I <FILE>       Install the package FILE into the chroot'
 	echo ' -i <PKG>        Install the package PKG from repos into the chroot'
-	echo ' -n              No-op, just make sure that the chroot exists'
+	echo ' -m              Make sure the chroot exists; do nothing else'
 	echo ' -r <CMD>        Run CMD in the chroot'
 	echo " -s              Sync the copy with the 'root' copy"
 	echo ' -u              Update the chroot'
@@ -60,8 +61,9 @@ main() {
 	local mode=enter
 	local archroot_args=(-f)
 	local ARG=''
-	while getopts 'l:NCcI:i:nrsuh' arg; do
+	while getopts 'n:l:NCcI:i:mrsuh' arg; do
 		case $arg in
+			n) CHROOT=$OPTARG;;
 			l) CHROOTCOPY=$OPTARG;;
 			N) archroot_args+=(-N);;
 
@@ -69,7 +71,7 @@ main() {
 			c) mode=clean_pacman;;
 			I) mode=install_file; ARG=$OPTARG;;
 			i) mode=install_pkg; ARG=$OPTARG;;
-			n) mode=noop;;
+			m) mode=noop;;
 			r) mode=run; ARG=$OPTARG;;
 			s) mode=sync;;
 			u) mode=update;;
@@ -79,16 +81,17 @@ main() {
 		esac
 	done
 	shift $(($OPTIND - 1))
-	case $# in
-		0) :;;
-		1) CHROOT="$1";;
-		*) usage; exit 1;;
-	esac
+	if [[ $# > 0 ]]; then
+		usage
+		exit 1
+	fi
 
 	# not local
 	rootdir="${CHROOTDIR}/${CHROOT}/root"
 	copydir="${CHROOTDIR}/${CHROOT}/${CHROOTCOPY}"
 
+	########################################################################
+
 	if (( EUID )); then
 		error "This script must be run as root."
 		exit 1
@@ -106,6 +109,8 @@ main() {
 		sync
 	fi
 
+	########################################################################
+
 	case "$mode" in
 		clean_repo)
 			msg "Cleaning local pacman repository"