all: sync with master

internal/aghos/os_unix.go

@@ -3,12 +3,17 @@
 package aghos
 
 import (
+	"io/fs"
 	"os"
 	"os/signal"
 
 	"golang.org/x/sys/unix"
 )
 
+func rootDirFS() (fsys fs.FS) {
+	return os.DirFS("/")
+}
+
 func notifyReconfigureSignal(c chan<- os.Signal) {
 	signal.Notify(c, unix.SIGHUP)
 }