1 files changed, 134 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/net/if/ifconf.c b/contrib/netbsd-tests/net/if/ifconf.c
new file mode 100644
index 0000000..424c5e8
--- /dev/null
+++ b/contrib/netbsd-tests/net/if/ifconf.c
@@ -0,0 +1,134 @@
+/*	$NetBSD: ifconf.c,v 1.1 2014/12/08 04:23:03 ozaki-r Exp $	*/
+/*
+ * Copyright (c) 2014 The NetBSD Foundation, 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:
+ * 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 ``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 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>
+__RCSID("$NetBSD: ifconf.c,v 1.1 2014/12/08 04:23:03 ozaki-r Exp $");
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/ioctl.h>
+
+#include <net/if.h>
+
+#include <stdio.h>
+#include <err.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+static void
+help(void)
+{
+	fprintf(stderr, "usage:\n\t%s total\n\t%s list [<nifreqs>]\n",
+	    getprogname(), getprogname());
+	exit(EXIT_FAILURE);
+}
+
+static int
+get_number_of_entries(void)
+{
+	int fd, r;
+	struct ifconf ifc;
+
+	fd = socket(AF_INET, SOCK_DGRAM, 0);
+	if (fd == -1)
+		err(EXIT_FAILURE, "socket");
+
+	ifc.ifc_len = 0;
+	ifc.ifc_buf = NULL;
+
+	r = ioctl(fd, SIOCGIFCONF, &ifc);
+	if (r == -1)
+		err(EXIT_FAILURE, "ioctl");
+
+	close(fd);
+
+	return ifc.ifc_len / sizeof(struct ifreq);
+}
+
+static void
+show_number_of_entries(void)
+{
+	printf("%d\n", get_number_of_entries());
+}
+
+static void
+show_interfaces(int nifreqs)
+{
+	int i, fd, r;
+	struct ifconf ifc;
+	struct ifreq *ifreqs;
+
+	if (nifreqs == 0)
+		nifreqs = get_number_of_entries();
+
+	if (nifreqs <= 0)
+		errx(EXIT_FAILURE, "nifreqs=%d", nifreqs);
+
+	ifreqs = malloc(sizeof(struct ifreq) * nifreqs);
+	if (ifreqs == NULL)
+		err(EXIT_FAILURE, "malloc(sizeof(ifreq) * %d)", nifreqs);
+
+	fd = socket(AF_INET, SOCK_DGRAM, 0);
+	if (fd == -1)
+		err(EXIT_FAILURE, "socket");
+
+	ifc.ifc_len = sizeof(struct ifreq) * nifreqs;
+	ifc.ifc_req = ifreqs;
+
+	r = ioctl(fd, SIOCGIFCONF, &ifc);
+	if (r == -1)
+		err(EXIT_FAILURE, "ioctl");
+	close(fd);
+
+	for (i=0; i < (int)(ifc.ifc_len / sizeof(struct ifreq)); i++) {
+		printf("%s: af=%hhu socklen=%hhu\n", ifreqs[i].ifr_name,
+		    ifreqs[i].ifr_addr.sa_family, ifreqs[i].ifr_addr.sa_len);
+	}
+
+	free(ifreqs);
+}
+
+int
+main(int argc, char *argv[])
+{
+	if (argc < 2)
+		help();
+
+	if (strcmp(argv[1], "total") == 0) {
+		show_number_of_entries();
+	} else if (strcmp(argv[1], "list") == 0) {
+		if (argc == 2)
+			show_interfaces(0);
+		else if (argc == 3)
+			show_interfaces(atoi(argv[2]));
+		else
+			help();
+	} else
+		help();
+
+	return EXIT_SUCCESS;
+}