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authorSebastian Huber <sebastian.huber@embedded-brains.de>2013-10-09 22:42:09 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2013-10-10 09:06:58 +0200
commitbceabc95c1c85d793200446fa85f1ddc6313ea29 (patch)
tree973c8bd8deca9fd69913f2895cc91e0e6114d46c /freebsd/sbin/ifconfig/ifclone.c
parentAdd FreeBSD sources as a submodule (diff)
downloadrtems-libbsd-bceabc95c1c85d793200446fa85f1ddc6313ea29.tar.bz2
Move files to match FreeBSD layout
Diffstat (limited to 'freebsd/sbin/ifconfig/ifclone.c')
-rw-r--r--freebsd/sbin/ifconfig/ifclone.c202
1 files changed, 202 insertions, 0 deletions
diff --git a/freebsd/sbin/ifconfig/ifclone.c b/freebsd/sbin/ifconfig/ifclone.c
new file mode 100644
index 00000000..7929208b
--- /dev/null
+++ b/freebsd/sbin/ifconfig/ifclone.c
@@ -0,0 +1,202 @@
+/*
+ * 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 */
+
+#include <sys/queue.h>
+#include <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"
+
+#ifdef __rtems__
+#include <freebsd/sys/sockio.h>
+#endif
+
+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)
+ 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));
+ 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);
+}
+#ifdef __rtems__
+static struct ifconfig_option clone_Copt = { .opt = "C", .opt_usage = "[-C]", .cb = clone_Copt_cb };
+#else
+static struct option clone_Copt = { .opt = "C", .opt_usage = "[-C]", .cb = clone_Copt_cb };
+#endif
+
+static __constructor void
+clone_ctor(void)
+{
+#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
+}