X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-bsd-sockets%2Finet.lisp;h=e6265ed45e8da3990ee6f8c38461fbdfc039e00b;hb=27763fafd1b170518ac2e85b9344fdddddcfd7c5;hp=4cc06848df78cbfb0c45c392aba738f432b500bd;hpb=4898ef32c639b1c7f4ee13a5ba566ce6debd03e6;p=sbcl.git

diff --git a/contrib/sb-bsd-sockets/inet.lisp b/contrib/sb-bsd-sockets/inet.lisp
index 4cc0684..e6265ed 100644
--- a/contrib/sb-bsd-sockets/inet.lisp
+++ b/contrib/sb-bsd-sockets/inet.lisp
@@ -27,6 +27,13 @@ Examples:
        #'parse-integer
        (split dotted-quads nil '(#\.))))
 
+(define-condition unknown-protocol ()
+  ((name :initarg :name
+         :reader unknown-protocol-name))
+  (:report (lambda (c s)
+             (format s "Protocol not found: ~a" (prin1-to-string
+                                                 (unknown-protocol-name c))))))
+
 ;;; getprotobyname only works in the internet domain, which is why this
 ;;; is here
 (defun get-protocol-by-name (name)      ;exported
@@ -35,6 +42,8 @@ using getprotobyname(2) which typically looks in NIS or /etc/protocols"
   ;; for extra brownie points, could return canonical protocol name
   ;; and aliases as extra values
   (let ((ent (sockint::getprotobyname name)))
+    (if (sb-alien::null-alien ent)
+        (error 'unknown-protocol :name name))
     (sockint::protoent-proto ent)))
 
 ;;; our protocol provides make-sockaddr-for, size-of-sockaddr,