2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/protosw.h>
37 #include <sys/socket.h>
38 #include <sys/socketvar.h>
39 #include <sys/sysctl.h>
43 #include <net/if_dl.h>
44 #include <arpa/inet.h>
62 fmt_flags(const struct bits *p, int f)
67 for (flags = name; p->b_mask; p++)
75 print_flags_generic(int flags, const struct bits *pbits, const char *format,
81 xo_emit(format, fmt_flags(pbits, flags));
83 snprintf(tag_fmt, sizeof(tag_fmt), "{le:%s/%%s}", tag_name);
84 xo_open_list(tag_name);
85 for (p = pbits; p->b_mask; p++)
86 if (p->b_mask & flags)
87 xo_emit(tag_fmt, p->b_name);
88 xo_close_list(tag_name);
92 prepare_ifmap(size_t *pifmap_size)
94 int ifindex = 0, size;
95 struct ifaddrs *ifap, *ifa;
96 struct sockaddr_dl *sdl;
98 struct ifmap_entry *ifmap = NULL;
102 * Retrieve interface list at first
103 * since we need #ifindex -> if_xname match
105 if (getifaddrs(&ifap) != 0)
106 err(EX_OSERR, "getifaddrs");
108 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
110 if (ifa->ifa_addr->sa_family != AF_LINK)
113 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
114 ifindex = sdl->sdl_index;
116 if (ifindex >= ifmap_size) {
117 size = roundup2(ifindex + 1, 32) *
118 sizeof(struct ifmap_entry);
119 if ((ifmap = realloc(ifmap, size)) == NULL)
120 errx(2, "realloc(%d) failed", size);
121 memset(&ifmap[ifmap_size], 0,
123 sizeof(struct ifmap_entry));
125 ifmap_size = roundup2(ifindex + 1, 32);
128 if (*ifmap[ifindex].ifname != '\0')
131 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ);
136 *pifmap_size = ifmap_size;