diff options
Diffstat (limited to 'freebsd-userspace/commands/sbin/ifconfig/ifgroup.c')
| -rw-r--r-- | freebsd-userspace/commands/sbin/ifconfig/ifgroup.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/freebsd-userspace/commands/sbin/ifconfig/ifgroup.c b/freebsd-userspace/commands/sbin/ifconfig/ifgroup.c new file mode 100644 index 00000000..9eaac3b6 --- /dev/null +++ b/freebsd-userspace/commands/sbin/ifconfig/ifgroup.c @@ -0,0 +1,186 @@ +/*- + * Copyright (c) 2006 Max Laier. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <net/if.h> + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "ifconfig.h" + +/* ARGSUSED */ +static void +setifgroup(const char *group_name, int d, int s, const struct afswtch *rafp) +{ + struct ifgroupreq ifgr; + + memset(&ifgr, 0, sizeof(ifgr)); + strlcpy(ifgr.ifgr_name, name, IFNAMSIZ); + + if (group_name[0] && isdigit(group_name[strlen(group_name) - 1])) + errx(1, "setifgroup: group names may not end in a digit"); + + if (strlcpy(ifgr.ifgr_group, group_name, IFNAMSIZ) >= IFNAMSIZ) + errx(1, "setifgroup: group name too long"); + if (ioctl(s, SIOCAIFGROUP, (caddr_t)&ifgr) == -1) + err(1," SIOCAIFGROUP"); +} + +/* ARGSUSED */ +static void +unsetifgroup(const char *group_name, int d, int s, const struct afswtch *rafp) +{ + struct ifgroupreq ifgr; + + memset(&ifgr, 0, sizeof(ifgr)); + strlcpy(ifgr.ifgr_name, name, IFNAMSIZ); + + if (group_name[0] && isdigit(group_name[strlen(group_name) - 1])) + errx(1, "unsetifgroup: group names may not end in a digit"); + + if (strlcpy(ifgr.ifgr_group, group_name, IFNAMSIZ) >= IFNAMSIZ) + errx(1, "unsetifgroup: group name too long"); + if (ioctl(s, SIOCDIFGROUP, (caddr_t)&ifgr) == -1) + err(1, "SIOCDIFGROUP"); +} + +static void +getifgroups(int s) +{ + int len, cnt; + struct ifgroupreq ifgr; + struct ifg_req *ifg; + + if (!verbose) + return; + + memset(&ifgr, 0, sizeof(ifgr)); + strlcpy(ifgr.ifgr_name, name, IFNAMSIZ); + + if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) { + if (errno == EINVAL || errno == ENOTTY) + return; + else + err(1, "SIOCGIFGROUP"); + } + + len = ifgr.ifgr_len; + ifgr.ifgr_groups = + (struct ifg_req *)calloc(len / sizeof(struct ifg_req), + sizeof(struct ifg_req)); + if (ifgr.ifgr_groups == NULL) + err(1, "getifgroups"); + if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) + err(1, "SIOCGIFGROUP"); + + cnt = 0; + ifg = ifgr.ifgr_groups; + for (; ifg && len >= sizeof(struct ifg_req); ifg++) { + len -= sizeof(struct ifg_req); + if (strcmp(ifg->ifgrq_group, "all")) { + if (cnt == 0) + printf("\tgroups: "); + cnt++; + printf("%s ", ifg->ifgrq_group); + } + } + if (cnt) + printf("\n"); +} + +static void +printgroup(const char *groupname) +{ + struct ifgroupreq ifgr; + struct ifg_req *ifg; + int len, cnt = 0; + int s; + + s = socket(AF_LOCAL, SOCK_DGRAM, 0); + if (s == -1) + err(1, "socket(AF_LOCAL,SOCK_DGRAM)"); + bzero(&ifgr, sizeof(ifgr)); + strlcpy(ifgr.ifgr_name, groupname, sizeof(ifgr.ifgr_name)); + if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { + if (errno == EINVAL || errno == ENOTTY || + errno == ENOENT) + exit(0); + else + err(1, "SIOCGIFGMEMB"); + } + + len = ifgr.ifgr_len; + if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) + err(1, "printgroup"); + if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) + err(1, "SIOCGIFGMEMB"); + + for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); + ifg++) { + len -= sizeof(struct ifg_req); + printf("%s\n", ifg->ifgrq_member); + cnt++; + } + free(ifgr.ifgr_groups); + + exit(0); +} + +static struct cmd group_cmds[] = { + DEF_CMD_ARG("group", setifgroup), + DEF_CMD_ARG("-group", unsetifgroup), +}; +static struct afswtch af_group = { + .af_name = "af_group", + .af_af = AF_UNSPEC, + .af_other_status = getifgroups, +}; +static struct option group_gopt = { "g:", "[-g groupname]", printgroup }; + +static __constructor void +group_ctor(void) +{ +#define N(a) (sizeof(a) / sizeof(a[0])) + int i; + + for (i = 0; i < N(group_cmds); i++) + cmd_register(&group_cmds[i]); + af_register(&af_group); + opt_register(&group_gopt); +#undef N +} |