toggledlog: convert remaing naked fmt.Print*

Several fatal errors were just printed to stdout, which
meant they were invisible when running the test suite.

Fix this by introducing toggledlog.Fatal and convert as
follows:

Fatal errors     -> toggledlog.Fatal
Warnings         -> toggledlog.Warn
Password prompts -> fmt.Fprintf

1 files changed, 4 insertions, 3 deletions

diff --git a/sendusr1.go b/sendusr1.go
index 5de8a6f..e61df23 100644
--- a/sendusr1.go
+++ b/sendusr1.go
@@ -1,9 +1,10 @@
 package main
 
 import (
-	"fmt"
 	"os"
 	"syscall"
+
+	"github.com/rfjakob/gocryptfs/internal/toggledlog"
 )
 
 // Send signal USR1 to "pid" (usually our parent process). This notifies it
@@ -11,11 +12,11 @@ import (
 func sendUsr1(pid int) {
 	p, err := os.FindProcess(pid)
 	if err != nil {
-		fmt.Printf("sendUsr1: FindProcess: %v\n", err)
+		toggledlog.Warn.Printf("sendUsr1: FindProcess: %v\n", err)
 		return
 	}
 	err = p.Signal(syscall.SIGUSR1)
 	if err != nil {
-		fmt.Printf("sendUsr1: Signal: %v\n", err)
+		toggledlog.Warn.Printf("sendUsr1: Signal: %v\n", err)
 	}
 }