db82353d87
mechanism o change vlan cloning to use callback and pass all vlan parameters on create using the new SIOCREATE2 ioctl o update vlan set logic to match existing practice
170 lines
4.4 KiB
C
170 lines
4.4 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ifconfig.h"
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static void
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list_cloners(void)
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{
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struct if_clonereq ifcr;
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char *cp, *buf;
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int idx;
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int s;
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s == -1)
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err(1, "socket(AF_INET,SOCK_DGRAM)");
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memset(&ifcr, 0, sizeof(ifcr));
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if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
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err(1, "SIOCIFGCLONERS for count");
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buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
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if (buf == NULL)
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err(1, "unable to allocate cloner name buffer");
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ifcr.ifcr_count = ifcr.ifcr_total;
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ifcr.ifcr_buffer = buf;
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if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
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err(1, "SIOCIFGCLONERS for names");
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/*
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* In case some disappeared in the mean time, clamp it down.
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*/
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if (ifcr.ifcr_count > ifcr.ifcr_total)
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ifcr.ifcr_count = ifcr.ifcr_total;
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for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
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if (idx > 0)
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putchar(' ');
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printf("%s", cp);
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}
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putchar('\n');
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free(buf);
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}
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static clone_callback_func *clone_cb = NULL;
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void
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clone_setcallback(clone_callback_func *p)
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{
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if (clone_cb != NULL && clone_cb != p)
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errx(1, "conflicting device create parameters");
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clone_cb = p;
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}
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/*
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* Do the actual clone operation. Any parameters must have been
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* setup by now. If a callback has been setup to do the work
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* then defer to it; otherwise do a simple create operation with
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* no parameters.
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*/
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static void
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ifclonecreate(int s, void *arg)
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{
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struct ifreq ifr;
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memset(&ifr, 0, sizeof(ifr));
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(void) strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
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if (clone_cb == NULL) {
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/* NB: no parameters */
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if (ioctl(s, SIOCIFCREATE2, &ifr) < 0)
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err(1, "SIOCIFCREATE2");
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} else {
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clone_cb(s, &ifr);
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}
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/*
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* If we get a different name back than we put in, print it.
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*/
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if (strncmp(name, ifr.ifr_name, sizeof(name)) != 0) {
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strlcpy(name, ifr.ifr_name, sizeof(name));
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printf("%s\n", name);
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}
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}
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static
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DECL_CMD_FUNC(clone_create, arg, d)
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{
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callback_register(ifclonecreate, NULL);
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}
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static
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DECL_CMD_FUNC(clone_destroy, arg, d)
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{
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(void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
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if (ioctl(s, SIOCIFDESTROY, &ifr) < 0)
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err(1, "SIOCIFDESTROY");
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}
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static struct cmd clone_cmds[] = {
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DEF_CMD("create", 0, clone_create),
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DEF_CMD("destroy", 0, clone_destroy),
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DEF_CMD("unplumb", 0, clone_destroy),
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};
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static void
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clone_Copt_cb(const char *optarg __unused)
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{
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list_cloners();
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exit(0);
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}
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static struct option clone_Copt = { "C", "[-C]", clone_Copt_cb };
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static __constructor void
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clone_ctor(void)
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{
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#define N(a) (sizeof(a) / sizeof(a[0]))
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int i;
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for (i = 0; i < N(clone_cmds); i++)
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cmd_register(&clone_cmds[i]);
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opt_register(&clone_Copt);
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#undef N
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}
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