2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 Max Laier. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 static const char rcsid[] =
33 #include <sys/param.h>
34 #include <sys/ioctl.h>
35 #include <sys/socket.h>
46 #include <libifconfig.h>
52 setifgroup(const char *group_name, int d, int s, const struct afswtch *rafp)
54 struct ifgroupreq ifgr;
56 memset(&ifgr, 0, sizeof(ifgr));
57 strlcpy(ifgr.ifgr_name, name, IFNAMSIZ);
59 if (group_name[0] && isdigit(group_name[strlen(group_name) - 1]))
60 errx(1, "setifgroup: group names may not end in a digit");
62 if (strlcpy(ifgr.ifgr_group, group_name, IFNAMSIZ) >= IFNAMSIZ)
63 errx(1, "setifgroup: group name too long");
64 if (ioctl(s, SIOCAIFGROUP, (caddr_t)&ifgr) == -1 && errno != EEXIST)
65 err(1," SIOCAIFGROUP");
70 unsetifgroup(const char *group_name, int d, int s, const struct afswtch *rafp)
72 struct ifgroupreq ifgr;
74 memset(&ifgr, 0, sizeof(ifgr));
75 strlcpy(ifgr.ifgr_name, name, IFNAMSIZ);
77 if (group_name[0] && isdigit(group_name[strlen(group_name) - 1]))
78 errx(1, "unsetifgroup: group names may not end in a digit");
80 if (strlcpy(ifgr.ifgr_group, group_name, IFNAMSIZ) >= IFNAMSIZ)
81 errx(1, "unsetifgroup: group name too long");
82 if (ioctl(s, SIOCDIFGROUP, (caddr_t)&ifgr) == -1 && errno != ENOENT)
83 err(1, "SIOCDIFGROUP");
89 struct ifgroupreq ifgr;
92 if (ifconfig_get_groups(lifh, name, &ifgr) == -1)
96 for (size_t i = 0; i < ifgr.ifgr_len / sizeof(struct ifg_req); ++i) {
97 struct ifg_req *ifg = &ifgr.ifgr_groups[i];
99 if (strcmp(ifg->ifgrq_group, "all")) {
103 printf(" %s", ifg->ifgrq_group);
109 free(ifgr.ifgr_groups);
113 printgroup(const char *groupname)
115 struct ifgroupreq ifgr;
120 s = socket(AF_LOCAL, SOCK_DGRAM, 0);
122 err(1, "socket(AF_LOCAL,SOCK_DGRAM)");
123 bzero(&ifgr, sizeof(ifgr));
124 strlcpy(ifgr.ifgr_name, groupname, sizeof(ifgr.ifgr_name));
125 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) {
126 if (errno == EINVAL || errno == ENOTTY ||
130 err(1, "SIOCGIFGMEMB");
134 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
135 err(1, "printgroup");
136 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
137 err(1, "SIOCGIFGMEMB");
139 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
141 len -= sizeof(struct ifg_req);
142 printf("%s\n", ifg->ifgrq_member);
145 free(ifgr.ifgr_groups);
150 static struct cmd group_cmds[] = {
151 DEF_CMD_ARG("group", setifgroup),
152 DEF_CMD_ARG("-group", unsetifgroup),
154 static struct afswtch af_group = {
155 .af_name = "af_group",
157 .af_other_status = getifgroups,
159 static struct option group_gopt = { "g:", "[-g groupname]", printgroup };
161 static __constructor void
166 for (i = 0; i < nitems(group_cmds); i++)
167 cmd_register(&group_cmds[i]);
168 af_register(&af_group);
169 opt_register(&group_gopt);