1 /*
2 * Copyright (c) 2025 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /*
30 * net_siocdifaddr.c
31 * - verify that SIOCDIFADDR succeeds
32 */
33
34 #include <stdio.h>
35 #include <unistd.h>
36 #include <stddef.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <TargetConditionals.h>
40 #include <darwintest.h>
41 #include <darwintest_utils.h>
42
43 #include "net_test_lib.h"
44
45 T_GLOBAL_META(T_META_NAMESPACE("xnu.net"),
46 T_META_RADAR_COMPONENT_NAME("xnu"),
47 T_META_RADAR_COMPONENT_VERSION("networking"),
48 T_META_ASROOT(true));
49
50 static char ifname[IF_NAMESIZE];
51
52 static void
fake_set_fail_ioctl(bool fail)53 fake_set_fail_ioctl(bool fail)
54 {
55 int error;
56 int val;
57
58 val = fail ? 1 : 0;
59 #define FAKE_FAIL_IOCTL "net.link.fake.fail_ioctl"
60 error = sysctlbyname(FAKE_FAIL_IOCTL, NULL, 0,
61 &val, sizeof(val));
62 T_ASSERT_EQ(error, 0, FAKE_FAIL_IOCTL " %d", val);
63 }
64
65 static void
test_cleanup(void)66 test_cleanup(void)
67 {
68 if (ifname[0] != '\0') {
69 (void)ifnet_destroy(ifname, false);
70 T_LOG("ifnet_destroy %s", ifname);
71 }
72 fake_set_fail_ioctl(false);
73 }
74
75 static void
sigint_cleanup(__unused int sig)76 sigint_cleanup(__unused int sig)
77 {
78 signal(SIGINT, SIG_DFL);
79 test_cleanup();
80 }
81
82 static void
test_siocdifaddr(void)83 test_siocdifaddr(void)
84 {
85 struct in_addr addr;
86 int error;
87 struct in_addr mask;
88
89 addr.s_addr = htonl(IN_LINKLOCALNETNUM + 1);
90 mask.s_addr = htonl(IN_CLASSB_NET);
91
92 signal(SIGINT, sigint_cleanup);
93 T_ATEND(test_cleanup);
94
95 strlcpy(ifname, FETH_NAME, sizeof(ifname));
96 error = ifnet_create_2(ifname, sizeof(ifname));
97 if (error != 0) {
98 ifname[0] = '\0';
99 T_FAIL("ifnet_create_2 %s", FETH_NAME);
100 }
101 fake_set_fail_ioctl(true);
102 ifnet_add_ip_address(ifname, addr, mask);
103 ifnet_remove_ip_address(ifname, addr, mask);
104 }
105
106 T_DECL(siocdifaddr,
107 "Verify SIOCDIFADDR succeeds when interface returns failure",
108 T_META_ASROOT(true), T_META_TAG_VM_PREFERRED)
109 {
110 test_siocdifaddr();
111 }
112