From 0740b53016b94d5e3f785c1fb572fa3b80a92fbc Mon Sep 17 00:00:00 2001
From: Oliver Hartkopp <socketcan@hartkopp.net>
Date: Thu, 10 Sep 2009 07:34:06 +0000
Subject: [PATCH] Remove obsolete 'vcan' tool.

---
 Makefile |   2 +-
 vcan.c   | 144 -------------------------------------------------------
 2 files changed, 1 insertion(+), 145 deletions(-)
 delete mode 100644 vcan.c

diff --git a/Makefile b/Makefile
index 168f3b7..65bd3d7 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,7 @@ CFLAGS    = -O2 -Wall -Wno-parentheses -I../kernel/2.6/include \
 	    -DAF_CAN=PF_CAN
 
 PROGRAMS = candump cansniffer cansend canplayer canlogserver cangen\
-	   canbusload log2long log2asc asc2log vcan\
+	   canbusload log2long log2asc asc2log\
 	   isotpdump isotprecv isotpsend isotpsniffer isotptun\
 	   slcan_attach slcand slcanpty
 
diff --git a/vcan.c b/vcan.c
deleted file mode 100644
index 06b651a..0000000
--- a/vcan.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * a real quick'n'dirty hack to add/remove vcan interfaces.
- * (also to have something to test the new RTNL API in vcan.)
- * this will be added to ip(8) of the iproute package, making
- * this hack obsolete.
- * 
- * we don't check the return value of sendto() and don't wait for
- * a reply using recvmsg().  We just hope everything works fine,
- * otherwise use strace, or feel free to add the code before this
- * whole thing is dumped to the bit bucket.
- *
- * Parts of this code were taken from the iproute source.
- *
- * urs
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/socket.h>
-#include <net/if.h>
-
-#include <asm/types.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-
-#include <linux/if_link.h>
-
-#ifndef IFLA_LINKINFO
-#error Your kernel includes do not provide the needed netlink interface function.
-#error This is a normal behaviour for Kernel versions below v2.6.24 .
-#error You do not need this tool for Kernel versions below v2.6.24 anyway as
-#error the number of vcan driver instances can be defined as a vcan.ko module
-#error commandline parameter (default = 4) in older Kernels.
-#endif
-
-#define NLMSG_TAIL(nmsg)						\
-        ((struct rtattr *)(((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
-
-int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
-	      int alen);
-
-void usage()
-{
-	fprintf(stderr, "Usage: vcan create\n"
-		"       vcan delete iface\n");
-	exit(1);
-}
-
-int main(int argc, char **argv)
-{
-	int s;
-	char *cmd, *dev;
-	struct {
-		struct nlmsghdr  n;
-		struct ifinfomsg i;
-		char             buf[1024];
-	} req;
-	struct sockaddr_nl nladdr;
-	struct rtattr *linkinfo;
-
-#ifdef OBSOLETE
-	fprintf(stderr, "This program is a temporary hack and is now obsolete.\n"
-		"Please use ip(8) instead, i.e.\n"
-		"    ip link add type vcan       or\n"
-		"    ip link delete iface\n");
-	exit(1);
-#endif
-	if (argc < 2)
-		usage();
-	cmd = argv[1];
-
-	s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
-
-	memset(&req, 0, sizeof(req));
-
-	if (strcmp(cmd, "create") == 0) {
-		req.n.nlmsg_len   = NLMSG_LENGTH(sizeof(struct ifinfomsg));
-		req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
-		req.n.nlmsg_type  = RTM_NEWLINK;
-		req.n.nlmsg_seq   = 0;
-		req.i.ifi_family  = AF_UNSPEC;
-
-		linkinfo = NLMSG_TAIL(&req.n);
-		addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
-		addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, "vcan", strlen("vcan"));
-		linkinfo->rta_len = (void*)NLMSG_TAIL(&req.n) - (void*)linkinfo;
-
-	} else if (strcmp(cmd, "delete") == 0) {
-		if (argc < 3)
-			usage();
-		dev = argv[2];
-		req.n.nlmsg_len   = NLMSG_LENGTH(sizeof(struct ifinfomsg));
-		req.n.nlmsg_flags = NLM_F_REQUEST;
-		req.n.nlmsg_type  = RTM_DELLINK;
-		req.i.ifi_family  = AF_UNSPEC;
-		req.i.ifi_index   = if_nametoindex(dev);
-	} else
-		usage();
-
-	memset(&nladdr, 0, sizeof(nladdr));
-	nladdr.nl_family = AF_NETLINK;
-	nladdr.nl_pid    = 0;
-	nladdr.nl_groups = 0;
-#if 1
-	sendto(s, &req, req.n.nlmsg_len, 0,
-	       (struct sockaddr*)&nladdr, sizeof(nladdr));
-#else
-	{
-		int i;
-
-		for (i = 0; i < req.n.nlmsg_len; i++) {
-			printf(" %02x", ((unsigned char*)&req)[i]);
-			if (i % 16 == 15)
-				putchar('\n');
-		}
-		putchar('\n');
-	}
-#endif
-	close(s);
-
-	return 0;
-}
-
-int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
-	      int alen)
-{
-	int len = RTA_LENGTH(alen);
-	struct rtattr *rta;
-
-	if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len) > maxlen) {
-		fprintf(stderr, "addattr_l ERROR: message exceeded bound of %d\n",
-			maxlen);
-		return -1;
-	}
-	rta = NLMSG_TAIL(n);
-	rta->rta_type = type;
-	rta->rta_len = len;
-	memcpy(RTA_DATA(rta), data, alen);
-	n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len);
-	return 0;
-}
-- 
2.39.2