/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 */
#ifdef __rtems__
#include <machine/rtems-bsd-program.h>
#endif /* __rtems__ */
#include <sys/queue.h>
#include <rtems/bsd/sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ifconfig.h"
static void
list_cloners(void)
{
struct if_clonereq ifcr;
char *cp, *buf;
int idx;
int s;
s = socket(AF_LOCAL, SOCK_DGRAM, 0);
if (s == -1)
err(1, "socket(AF_LOCAL,SOCK_DGRAM)");
memset(&ifcr, 0, sizeof(ifcr));
if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
err(1, "SIOCIFGCLONERS for count");
buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
if (buf == NULL)
err(1, "unable to allocate cloner name buffer");
ifcr.ifcr_count = ifcr.ifcr_total;
ifcr.ifcr_buffer = buf;
if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0) {
free(buf);
err(1, "SIOCIFGCLONERS for names");
}
/*
* In case some disappeared in the mean time, clamp it down.
*/
if (ifcr.ifcr_count > ifcr.ifcr_total)
ifcr.ifcr_count = ifcr.ifcr_total;
for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
if (idx > 0)
putchar(' ');
printf("%s", cp);
}
putchar('\n');
free(buf);
}
struct clone_defcb {
char ifprefix[IFNAMSIZ];
clone_callback_func *clone_cb;
SLIST_ENTRY(clone_defcb) next;
};
static SLIST_HEAD(, clone_defcb) clone_defcbh =
SLIST_HEAD_INITIALIZER(clone_defcbh);
void
clone_setdefcallback(const char *ifprefix, clone_callback_func *p)
{
struct clone_defcb *dcp;
dcp = malloc(sizeof(*dcp));
#ifndef __rtems__
if (dcp == NULL) {
errx(1, "unable to allocate clone");
}
#endif /* __rtems__ */
strlcpy(dcp->ifprefix, ifprefix, IFNAMSIZ-1);
dcp->clone_cb = p;
SLIST_INSERT_HEAD(&clone_defcbh, dcp, next);
}
/*
* Do the actual clone operation. Any parameters must have been
* setup by now. If a callback has been setup to do the work
* then defer to it; otherwise do a simple create operation with
* no parameters.
*/
static void
ifclonecreate(int s, void *arg)
{
struct ifreq ifr;
struct clone_defcb *dcp;
clone_callback_func *clone_cb = NULL;
memset(&ifr, 0, sizeof(ifr));
(void) strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (clone_cb == NULL) {
/* Try to find a default callback */
SLIST_FOREACH(dcp, &clone_defcbh, next) {
if (strncmp(dcp->ifprefix, ifr.ifr_name,
strlen(dcp->ifprefix)) == 0) {
clone_cb = dcp->clone_cb;
break;
}
}
}
if (clone_cb == NULL) {
/* NB: no parameters */
if (ioctl(s, SIOCIFCREATE2, &ifr) < 0)
err(1, "SIOCIFCREATE2");
} else {
clone_cb(s, &ifr);
}
/*
* If we get a different name back than we put in, print it.
*/
if (strncmp(name, ifr.ifr_name, sizeof(name)) != 0) {
strlcpy(name, ifr.ifr_name, sizeof(name));
printf("%s\n", name);
}
}
static
DECL_CMD_FUNC(clone_create, arg, d)
{
callback_register(ifclonecreate, NULL);
}
static
DECL_CMD_FUNC(clone_destroy, arg, d)
{
(void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCIFDESTROY, &ifr) < 0)
err(1, "SIOCIFDESTROY");
}
static struct cmd clone_cmds[] = {
DEF_CLONE_CMD("create", 0, clone_create),
DEF_CMD("destroy", 0, clone_destroy),
DEF_CLONE_CMD("plumb", 0, clone_create),
DEF_CMD("unplumb", 0, clone_destroy),
};
static void
clone_Copt_cb(const char *optarg __unused)
{
list_cloners();
exit(0);
}
static struct option clone_Copt = { .opt = "C", .opt_usage = "[-C]", .cb = clone_Copt_cb };
#ifndef __rtems__
static __constructor void
#else /* __rtems__ */
void
#endif /* __rtems__ */
clone_ctor(void)
{
#ifdef __rtems__
SLIST_INIT(&clone_defcbh);
#endif /* __rtems__ */
#define N(a) (sizeof(a) / sizeof(a[0]))
size_t i;
for (i = 0; i < N(clone_cmds); i++)
cmd_register(&clone_cmds[i]);
opt_register(&clone_Copt);
#undef N
}
#ifdef __rtems__
void
clone_dtor(void)
{
struct clone_defcb *dcp;
struct clone_defcb *dcp_tmp;
SLIST_FOREACH_SAFE(dcp, &clone_defcbh, next, dcp_tmp) {
free(dcp);
}
}
#endif /* __rtems__ */
