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-rw-r--r--winsup/cygwin/fhandler_socket_local.cc10
1 files changed, 7 insertions, 3 deletions
diff --git a/winsup/cygwin/fhandler_socket_local.cc b/winsup/cygwin/fhandler_socket_local.cc
index c94bf82..964f3e8 100644
--- a/winsup/cygwin/fhandler_socket_local.cc
+++ b/winsup/cygwin/fhandler_socket_local.cc
@@ -1430,10 +1430,14 @@ fhandler_socket_local::setsockopt (int level, int optname, const void *optval,
FIXME: In the long run we should find a more generic solution
which doesn't require a blocking handshake in accept/connect
to exchange SO_PEERCRED credentials. */
- if (optval || optlen)
- set_errno (EINVAL);
- else
+ /* Temporary: Allow SO_PEERCRED to only be zeroed. Two ways to
+ accomplish this: pass NULL,0 for optval,optlen; or pass the
+ address,length of an '(int) 0' set up by the caller. */
+ if ((!optval && !optlen) ||
+ (optlen == (socklen_t) sizeof (int) && !*(int *) optval))
ret = af_local_set_no_getpeereid ();
+ else
+ set_errno (EINVAL);
return ret;
case SO_REUSEADDR: