fswatcher: fix bsd supportfs

Fix the following error when running maildir on freebsd:

 could not create file system watcher: Unsupported OS: freebsd

Do not register based on os type. Register based on supported API.
Rename linux -> inotify and darwin -> fsevents. Only build fsevents on
darwin, and inotify on all other platforms.

Fixes: a0935a3de0ce ("worker/lib: implement an fswatcher interface")
Reported-by: Jens Grassel <jens@wegtam.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>

1 files changed, 6 insertions, 6 deletions

diff --git a/worker/handlers/register.go b/worker/handlers/register.go
index c94a256e..4123665f 100644
--- a/worker/handlers/register.go
+++ b/worker/handlers/register.go
@@ -29,15 +29,15 @@ func GetHandlerForScheme(scheme string, worker *types.Worker) (types.Backend, er
 
 type WatcherFactoryFunc func() (types.FSWatcher, error)
 
-var watcherFactories map[string]WatcherFactoryFunc = make(map[string]WatcherFactoryFunc)
+var watcherFactory WatcherFactoryFunc
 
-func RegisterWatcherFactory(os string, fn WatcherFactoryFunc) {
-	watcherFactories[os] = fn
+func RegisterWatcherFactory(fn WatcherFactoryFunc) {
+	watcherFactory = fn
 }
 
 func NewWatcher() (types.FSWatcher, error) {
-	if fn, ok := watcherFactories[runtime.GOOS]; ok {
-		return fn()
+	if watcherFactory == nil {
+		return nil, fmt.Errorf("Unsupported OS: %s", runtime.GOOS)
 	}
-	return nil, fmt.Errorf("Unsupported OS: %s", runtime.GOOS)
+	return watcherFactory()
 }