RPC(3): Import from FreeBSD

freebsd/lib/libc/rpc/rpcdname.c

@@ -0,0 +1,82 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*-
+ * Copyright (c) 2009, Sun Microsystems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ * - Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of Sun Microsystems, Inc. nor the names of its 
+ *   contributors may be used to endorse or promote products derived 
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rpcdname.c 1.7 91/03/11 Copyr 1989 Sun Micro";
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * rpcdname.c
+ * Gets the default domain name
+ */
+
+#include "namespace.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include "un-namespace.h"
+
+static char *default_domain = 0;
+
+static char *
+get_default_domain()
+{
+	char temp[256];
+
+	if (default_domain)
+		return (default_domain);
+	if (getdomainname(temp, sizeof(temp)) < 0)
+		return (0);
+	if ((int) strlen(temp) > 0) {
+		default_domain = (char *)malloc((strlen(temp)+(unsigned)1));
+		if (default_domain == 0)
+			return (0);
+		(void) strcpy(default_domain, temp);
+		return (default_domain);
+	}
+	return (0);
+}
+
+/*
+ * This is a wrapper for the system call getdomainname which returns a
+ * ypclnt.h error code in the failure case.  It also checks to see that
+ * the domain name is non-null, knowing that the null string is going to
+ * get rejected elsewhere in the NIS client package.
+ */
+int
+__rpc_get_default_domain(domain)
+	char **domain;
+{
+	if ((*domain = get_default_domain()) != 0)
+		return (0);
+	return (-1);
+}