fish: Print extended help when the user types an unknown command first.

[libguestfs.git] / daemon / proto.c

diff --git a/daemon/proto.c b/daemon/proto.c
index e3ff9e9..0002d80 100644 (file)
--- a/daemon/proto.c
+++ b/daemon/proto.c
@@ -195,12 +195,11 @@ reply_with_error (const char *fs, ...)
 }
 
 void
-reply_with_perror (const char *fs, ...)
+reply_with_perror_errno (int err, const char *fs, ...)
 {
   char buf1[GUESTFS_ERROR_LEN];
   char buf2[GUESTFS_ERROR_LEN];
   va_list args;
-  int err = errno;
 
   va_start (args, fs);
   vsnprintf (buf1, sizeof buf1, fs, args);
@@ -290,7 +289,7 @@ reply (xdrproc_t xdrp, char *ret)
      * we want to return an error message instead. (RHBZ#509597).
      */
     if (!(*xdrp) (&xdr, ret)) {
-      reply_with_perror ("guestfsd: failed to encode reply body\n");
+      reply_with_error ("guestfsd: failed to encode reply body\n(maybe the reply exceeds the maximum message size in the protocol?)");
       xdr_destroy (&xdr);
       return;
     }