2 * SPDX-License-Identifier: BSD-3-Clause
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32 #include <sys/cdefs.h>
33 #include <sys/param.h>
34 #include <sys/protosw.h>
35 #include <sys/socket.h>
36 #include <sys/socketvar.h>
37 #include <sys/sysctl.h>
41 #include <net/if_dl.h>
42 #include <arpa/inet.h>
60 fmt_flags(const struct bits *p, int f)
65 for (flags = name; p->b_mask; p++)
73 print_flags_generic(int flags, const struct bits *pbits, const char *format,
79 xo_emit(format, fmt_flags(pbits, flags));
81 snprintf(tag_fmt, sizeof(tag_fmt), "{le:%s/%%s}", tag_name);
82 xo_open_list(tag_name);
83 for (p = pbits; p->b_mask; p++)
84 if (p->b_mask & flags)
85 xo_emit(tag_fmt, p->b_name);
86 xo_close_list(tag_name);
90 prepare_ifmap(size_t *pifmap_size)
92 int ifindex = 0, size;
93 struct ifaddrs *ifap, *ifa;
94 struct sockaddr_dl *sdl;
96 struct ifmap_entry *ifmap = NULL;
100 * Retrieve interface list at first
101 * since we need #ifindex -> if_xname match
103 if (getifaddrs(&ifap) != 0)
104 err(EX_OSERR, "getifaddrs");
106 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
108 if (ifa->ifa_addr->sa_family != AF_LINK)
111 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
112 ifindex = sdl->sdl_index;
114 if (ifindex >= ifmap_size) {
115 size = roundup2(ifindex + 1, 32) *
116 sizeof(struct ifmap_entry);
117 if ((ifmap = realloc(ifmap, size)) == NULL)
118 errx(2, "realloc(%d) failed", size);
119 memset(&ifmap[ifmap_size], 0,
121 sizeof(struct ifmap_entry));
123 ifmap_size = roundup2(ifindex + 1, 32);
126 if (*ifmap[ifindex].ifname != '\0')
129 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ);
134 *pifmap_size = ifmap_size;