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1 /*

3 *

4 * @APPLE_LICENSE_HEADER_START@

5 *

6 * The contents of this file constitute Original Code as defined in and

7 * are subject to the Apple Public Source License Version 1.1 (the

8 * "License"). You may not use this file except in compliance with the

9 * License. Please obtain a copy of the License at

10 * http://www.apple.com/publicsource and read it before using this file.

11 *

12 * This Original Code and all software distributed under the License are

13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER

14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,

15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the

17 * License for the specific language governing rights and limitations

18 * under the License.

19 *

20 * @APPLE_LICENSE_HEADER_END@

21 */

23 /*

24 * nexus.c

25 * - report information about attached nexus

26 */

28 /*

29 * Modification History:

30 *

31 * April 10, 2017 Dieter Siegmund (dieter@apple.com)

32 * - created

33 */

35 #include <sys/param.h>

36 #include <sys/ioctl.h>

37 #include <sys/socket.h>

39 #include <stdlib.h>

40 #include <unistd.h>

42 #include <net/ethernet.h>

43 #include <net/if.h>

44 #include <net/if_var.h>

45 #include <net/if_fake_var.h>

47 #include <net/route.h>

49 #include <ctype.h>

50 #include <stdio.h>

51 #include <string.h>

52 #include <stdlib.h>

53 #include <unistd.h>

54 #include <err.h>

55 #include <errno.h>

57 #include "ifconfig.h"

59 static void

60 nexus_status(int s)

61 {

62 struct if_nexusreq ifnr;

63 uuid_string_t flowswitch;

64 uuid_string_t netif;

66 if (!verbose) {

67 return;

68 }

         bzero((char *)&ifnr, sizeof(ifnr));

         strlcpy(ifnr.ifnr_name, ifr.ifr_name, sizeof(ifnr.ifnr_name));

         if (ioctl(s, SIOCGIFNEXUS, &ifnr) < 0) {

72 return;

73 }

         if (uuid_is_null(ifnr.ifnr_netif)) {

75 /* technically, this shouldn't happen */

76 return;

77 }

         uuid_unparse_upper(ifnr.ifnr_netif, netif);

         printf("\tnetif: %s\n", netif);

         if (uuid_is_null(ifnr.ifnr_flowswitch) == 0) {

                 uuid_unparse_upper(ifnr.ifnr_flowswitch, flowswitch);

                 printf("\tflowswitch: %s\n", flowswitch);

83 }

84 return;

85 }

87 static struct afswtch af_fake = {

88 .af_name = "af_fake",

89 .af_af = AF_UNSPEC,

90 .af_other_status = nexus_status,

91 };

93 static __constructor void

94 fake_ctor(void)

95 {

96 af_register(&af_fake);

97 }