Fix error code for too small input buffer to getnameinfo

[platform/upstream/glibc.git] / inet / getnameinfo.c

diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c
index 6fb6ad6..436604b 100644 (file)
--- a/inet/getnameinfo.c
+++ b/inet/getnameinfo.c
@@ -346,10 +346,11 @@ getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
                                                     "%u", scopeid);
 
                        if (real_hostlen + scopelen + 1 > hostlen)
-                         /* XXX We should not fail here.  Simply enlarge
-                            the buffer or return with out of memory.  */
-                         return EAI_SYSTEM;
-                       memcpy (host + real_hostlen, scopebuf, scopelen + 1);
+                         /* Signal the buffer is too small.  This is
+                            what inet_ntop does.  */
+                         c = NULL;
+                       else
+                         memcpy (host + real_hostlen, scopebuf, scopelen + 1);
                      }
                  }
                else
@@ -357,7 +358,7 @@ getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
                                 (const void *) &(((const struct sockaddr_in *) sa)->sin_addr),
                                 host, hostlen);
                if (c == NULL)
-                 return EAI_SYSTEM;
+                 return EAI_OVERFLOW;
              }
            ok = 1;
          }