auto import from //depot/cupcake/@135843
diff --git a/libc/netbsd/net/nsdispatch.c b/libc/netbsd/net/nsdispatch.c
new file mode 100644
index 0000000..fa99366
--- /dev/null
+++ b/libc/netbsd/net/nsdispatch.c
@@ -0,0 +1,152 @@
+/* $NetBSD: nsdispatch.c,v 1.30 2005/11/29 03:11:59 christos Exp $ */
+
+/*-
+ * Copyright (c) 1997, 1998, 1999, 2004 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Luke Mewburn; and by Jason R. Thorpe.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*-
+ * Copyright (c) 2003 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * Portions of this software were developed for the FreeBSD Project by
+ * Jacques A. Vidrine, Safeport Network Services, and Network
+ * Associates Laboratories, the Security Research Division of Network
+ * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <assert.h>
+#ifdef __ELF__
+#include <dlfcn.h>
+#endif /* __ELF__ */
+#include <fcntl.h>
+#define _NS_PRIVATE
+#include <nsswitch.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static nss_method
+_nsmethod(const char *source, const char *database, const char *method,
+ const ns_dtab disp_tab[], void **cb_data)
+{
+ int curdisp;
+
+ if (disp_tab != NULL) {
+ for (curdisp = 0; disp_tab[curdisp].src != NULL; curdisp++) {
+ if (strcasecmp(source, disp_tab[curdisp].src) == 0) {
+ *cb_data = disp_tab[curdisp].cb_data;
+ return (disp_tab[curdisp].callback);
+ }
+ }
+ }
+
+ *cb_data = NULL;
+ return (NULL);
+}
+
+int
+/*ARGSUSED*/
+nsdispatch(void *retval, const ns_dtab disp_tab[], const char *database,
+ const char *method, const ns_src defaults[], ...)
+{
+ va_list ap;
+ int i, result;
+ const ns_src *srclist;
+ int srclistsize;
+ nss_method cb;
+ void *cb_data;
+
+ /* retval may be NULL */
+ /* disp_tab may be NULL */
+ assert(database != NULL);
+ assert(method != NULL);
+ assert(defaults != NULL);
+ if (database == NULL || method == NULL || defaults == NULL)
+ return (NS_UNAVAIL);
+
+ srclist = defaults;
+ srclistsize = 0;
+ while (srclist[srclistsize].name != NULL)
+ srclistsize++;
+
+ result = 0;
+
+ for (i = 0; i < srclistsize; i++) {
+ cb = _nsmethod(srclist[i].name, database, method,
+ disp_tab, &cb_data);
+ result = 0;
+ if (cb != NULL) {
+ va_start(ap, defaults);
+ result = (*cb)(retval, cb_data, ap);
+ va_end(ap);
+ if (defaults[0].flags & NS_FORCEALL)
+ continue;
+ if (result & srclist[i].flags)
+ break;
+ }
+ }
+ result &= NS_STATUSMASK; /* clear private flags in result */
+
+ return (result ? result : NS_NOTFOUND);
+}