X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/060df5ea7c632b1ac8cc8aac1fb59758165c2084..6d2010ae8f7a6078e10b361c6962983bab233e0f:/libsyscall/wrappers/legacy/recvfrom.c

diff --git a/libsyscall/wrappers/legacy/recvfrom.c b/libsyscall/wrappers/legacy/recvfrom.c
new file mode 100644
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+++ b/libsyscall/wrappers/legacy/recvfrom.c
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+/*
+ * Copyright (c) 2006-2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef NO_SYSCALL_LEGACY
+
+#define _NONSTD_SOURCE
+#include <sys/cdefs.h>
+
+/*
+ * We need conformance on so that EOPNOTSUPP=102.  But the routine symbol
+ * will still be the legacy (undecorated) one.
+ */
+#undef __DARWIN_UNIX03
+#define __DARWIN_UNIX03 1
+
+#include <sys/socket.h>
+#include "_errno.h"
+
+ssize_t __recvfrom_nocancel(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
+
+/*
+ * recvfrom stub, legacy version
+ */
+ssize_t
+recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr * __restrict from, socklen_t * __restrict fromlen)
+{
+	int ret = __recvfrom_nocancel(s, buf, len, flags, from, fromlen);
+
+	/* use ENOTSUP for legacy behavior */
+	if (ret < 0 && errno == EOPNOTSUPP)
+		errno = ENOTSUP;
+	return ret;
+}
+
+#endif