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Subject: svn commit: r1406690 - /apr/apr/trunk/network_io/unix/sockopt.c
Date: Wed, 07 Nov 2012 16:06:25 -0000
To: commits@apr.apache.org
From: trawick@apache.org
Message-Id: <20121107160625.970F123888E3@eris.apache.org>

Author: trawick
Date: Wed Nov  7 16:06:25 2012
New Revision: 1406690

URL: http://svn.apache.org/viewvc?rev=1406690&view=rev
Log:
apr_socket_accept_filter: Return success when trying to again set the filter
                          to the same value as before.

                          Use apr_cpystrn().

PR: 37863     (warning message from Apache httpd during restart)


Modified:
    apr/apr/trunk/network_io/unix/sockopt.c

Modified: apr/apr/trunk/network_io/unix/sockopt.c
URL: http://svn.apache.org/viewvc/apr/apr/trunk/network_io/unix/sockopt.c?rev=1406690&r1=1406689&r2=1406690&view=diff
==============================================================================
--- apr/apr/trunk/network_io/unix/sockopt.c (original)
+++ apr/apr/trunk/network_io/unix/sockopt.c Wed Nov  7 16:06:25 2012
@@ -397,8 +397,25 @@ apr_status_t apr_socket_accept_filter(ap
                                       const char *args)
 {
     struct accept_filter_arg af;
-    strncpy(af.af_name, name, 16);
-    strncpy(af.af_arg, args, 256 - 16);
+    socklen_t optlen = sizeof(af);
+
+    /* FreeBSD returns an error if the filter is already set; ignore
+     * this call if we previously set it to the same value.
+     */
+    if ((getsockopt(sock->socketdes, SOL_SOCKET, SO_ACCEPTFILTER,
+                    &af, &optlen)) == 0) {
+        if (!strcmp(name, af.af_name) && !strcmp(args, af.af_arg)) {
+            return APR_SUCCESS;
+        }
+    }
+
+    /* Uhh, at least in FreeBSD 9 the fields are declared as arrays of
+     * these lengths; did sizeof not work in some ancient release?
+     *
+     * FreeBSD kernel sets the last byte to a '\0'.
+     */
+    apr_cpystrn(af.af_name, name, 16);
+    apr_cpystrn(af.af_arg, args, 256 - 16);
 
     if ((setsockopt(sock->socketdes, SOL_SOCKET, SO_ACCEPTFILTER,
           &af, sizeof(af))) < 0) {