Change post-read-only to post-readonly and create set-readonly;

packages/rocketchat-authorization/server/startup.coffee

@@ -33,7 +33,6 @@ Meteor.startup ->
 		{ _id: 'manage-integrations',           roles : ['admin'] }
 		{ _id: 'manage-own-integrations',       roles : ['admin', 'bot'] }
 		{ _id: 'manage-oauth-apps',             roles : ['admin'] }
-		{ _id: 'post-read-only',				roles : ['admin', 'moderator', 'owner'] }
 		{ _id: 'mention-all',                   roles : ['admin', 'owner', 'moderator', 'user'] }
 		{ _id: 'mute-user',                     roles : ['admin', 'owner', 'moderator'] }
 		{ _id: 'remove-user',                   roles : ['admin', 'owner', 'moderator'] }

packages/rocketchat-channel-settings/server/models/Rooms.coffee

@@ -17,14 +17,14 @@ RocketChat.models.Rooms.setReadOnlyById = (_id, readOnly) ->
 			ro: readOnly
 
 	if readOnly
-		# we want to mute all users without the post-read-only permission
+		# we want to mute all users without the post-readonly permission
 
 		usernames = @findOne(query, { fields: { usernames: 1 }})
 		users = RocketChat.models.Users.findUsersByUsernames usernames?.usernames, {fields: {username: 1}}
 		users.forEach (user) ->
-			if RocketChat.authz.hasPermission(user._id, 'post-read-only') is false
+			if RocketChat.authz.hasPermission(user._id, 'post-readonly') is false
 				# create a new array if necessary
-				update.$set.muted = [] if !update.$set.muted 
+				update.$set.muted = [] if !update.$set.muted
 				update.$set.muted.push user.username
 	else
 		# remove the muted user array

packages/rocketchat-channel-settings/server/startup.js

 Meteor.startup(function() {
+	RocketChat.models.Permissions.upsert('post-readonly', {$set: { roles: ['admin', 'owner', 'moderator'] } });
 	RocketChat.models.Permissions.upsert('set-readonly', {$set: { roles: ['admin', 'owner'] } });
 });

packages/rocketchat-lib/server/functions/addUserToRoom.js

@@ -12,7 +12,7 @@ RocketChat.addUserToRoom = function(rid, user, inviter, silenced) {
 		RocketChat.callbacks.run('beforeJoinRoom', user, room);
 	}
 
-	var muted = room.ro && !RocketChat.authz.hasPermission(user._id, 'post-read-only');
+	var muted = room.ro && !RocketChat.authz.hasPermission(user._id, 'post-readonly');
 	RocketChat.models.Rooms.addUsernameById(rid, user.username, muted);
 	RocketChat.models.Subscriptions.createWithRoomAndUser(room, user, {
 		ts: now,

packages/rocketchat-lib/server/functions/createRoom.js

@@ -66,8 +66,8 @@ RocketChat.createRoom = function(type, name, owner, members, readOnly) {
 			continue;
 		}
 
-		// make all room members muted by default, unless they have the post-read-only permission
-		if (readOnly === true && !RocketChat.authz.hasPermission(member._id, 'post-read-only')) {
+		// make all room members muted by default, unless they have the post-readonly permission
+		if (readOnly === true && !RocketChat.authz.hasPermission(member._id, 'post-readonly')) {
 			RocketChat.models.Rooms.muteUsernameByRoomId(room._id, username);
 		}