auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 379 deletions

diff --git a/if-linux.c b/if-linux.c
deleted file mode 100644
index 1009270..0000000
--- a/if-linux.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/* 
- * dhcpcd - DHCP client daemon
- * Copyright 2006-2008 Roy Marples <roy@marples.name>
- * 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.
- */
-
-#include <asm/types.h> /* Needed for 2.4 kernels */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <sys/param.h>
-
-#include <arpa/inet.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-#include <netinet/ether.h>
-#include <netpacket/packet.h>
-
-#include <errno.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-/* Support older kernels */
-#ifndef IFLA_WIRELESS
-# define IFLA_WIRELSSS (IFLFA_MASTER + 1)
-#endif
-
-#include "config.h"
-#include "common.h"
-#include "dhcp.h"
-#include "net.h"
-
-#define BUFFERLEN 256
-
-int
-open_link_socket(struct interface *iface)
-{
-	int fd;
-	struct sockaddr_nl nl;
-
-	if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) == -1)
-		return -1;
-	memset(&nl, 0, sizeof(nl));
-	nl.nl_family = AF_NETLINK;
-	nl.nl_groups = RTMGRP_LINK;
-	if (bind(fd, (struct sockaddr *)&nl, sizeof(nl)) == -1)
-		return -1;
-	set_cloexec(fd);
-	if (iface->link_fd != -1)
-		close(iface->link_fd);
-	iface->link_fd = fd;
-	return 0;
-}
-
-static int
-get_netlink(int fd, int flags,
-	    int (*callback)(struct nlmsghdr *, const char *),
-	    const char *ifname)
-{
-	char *buffer = NULL;
-	ssize_t bytes;
-	struct nlmsghdr *nlm;
-	int r = -1;
-
-	buffer = xzalloc(sizeof(char) * BUFFERLEN);
-	for (;;) {
-		bytes = recv(fd, buffer, BUFFERLEN, flags);
-		if (bytes == -1) {
-			if (errno == EAGAIN) {
-				r = 0;
-				goto eexit;
-			}
-			if (errno == EINTR)
-				continue;
-			goto eexit;
-		}
-		for (nlm = (struct nlmsghdr *)buffer;
-		     NLMSG_OK(nlm, (size_t)bytes);
-		     nlm = NLMSG_NEXT(nlm, bytes))
-		{
-			r = callback(nlm, ifname);
-			if (r != 0)
-				goto eexit;
-		}
-	}
-
-eexit:
-	free(buffer);
-	return r;
-}
-
-static int
-err_netlink(struct nlmsghdr *nlm, _unused const char *ifname)
-{
-	struct nlmsgerr *err;
-	int l;
-
-	if (nlm->nlmsg_type != NLMSG_ERROR)
-		return 0;
-	l = nlm->nlmsg_len - sizeof(*nlm);
-	if ((size_t)l < sizeof(*err)) {
-		errno = EBADMSG;
-		return -1;
-	}
-	err = (struct nlmsgerr *)NLMSG_DATA(nlm);
-	if (err->error == 0)
-		return l;
-	errno = -err->error;
-	return -1;
-}
-
-static int
-link_netlink(struct nlmsghdr *nlm, const char *ifname)
-{
-	int len;
-	struct rtattr *rta;
-	struct ifinfomsg *ifi;
-	char ifn[IF_NAMESIZE + 1];
-
-	if (nlm->nlmsg_type != RTM_NEWLINK && nlm->nlmsg_type != RTM_DELLINK)
-		return 0;
-	len = nlm->nlmsg_len - sizeof(*nlm);
-	if ((size_t)len < sizeof(*ifi)) {
-		errno = EBADMSG;
-		return -1;
-	}
-	ifi = NLMSG_DATA(nlm);
-	if (ifi->ifi_flags & IFF_LOOPBACK)
-		return 0;
-	rta = (struct rtattr *) ((char *)ifi + NLMSG_ALIGN(sizeof(*ifi)));
-	len = NLMSG_PAYLOAD(nlm, sizeof(*ifi));
-	*ifn = '\0';
-	while (RTA_OK(rta, len)) {
-		switch (rta->rta_type) {
-		case IFLA_WIRELESS:
-			/* Ignore wireless messages */
-			if (nlm->nlmsg_type == RTM_NEWLINK &&
-			    ifi->ifi_change  == 0)
-				return 0;
-			break;
-		case IFLA_IFNAME:
-			strlcpy(ifn, RTA_DATA(rta), sizeof(ifn));
-			break;
-		}
-		rta = RTA_NEXT(rta, len);
-	}
-
-	if (strncmp(ifname, ifn, sizeof(ifn)) == 0)
-		return 1;
-	return 0;
-}
-
-int
-link_changed(struct interface *iface)
-{
-	return get_netlink(iface->link_fd, MSG_DONTWAIT,
-			   &link_netlink, iface->name);
-}
-
-static int
-send_netlink(struct nlmsghdr *hdr)
-{
-	int fd, r;
-	struct sockaddr_nl nl;
-	struct iovec iov;
-	struct msghdr msg;
-	static unsigned int seq;
-
-	if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) == -1)
-		return -1;
-	memset(&nl, 0, sizeof(nl));
-	nl.nl_family = AF_NETLINK;
-	if (bind(fd, (struct sockaddr *)&nl, sizeof(nl)) == -1) {
-		close(fd);
-		return -1;
-	}
-	memset(&iov, 0, sizeof(iov));
-	iov.iov_base = hdr;
-	iov.iov_len = hdr->nlmsg_len;
-	memset(&msg, 0, sizeof(msg));
-	msg.msg_name = &nl;
-	msg.msg_namelen = sizeof(nl);
-	msg.msg_iov = &iov;
-	msg.msg_iovlen = 1;
-	/* Request a reply */
-	hdr->nlmsg_flags |= NLM_F_ACK;
-	hdr->nlmsg_seq = ++seq;
-
-	if (sendmsg(fd, &msg, 0) != -1)
-		r = get_netlink(fd, 0, &err_netlink, NULL);
-	else
-		r = -1;
-	close(fd);
-	return r;
-}
-
-#define NLMSG_TAIL(nmsg) \
-	((struct rtattr *)(((ptrdiff_t)(nmsg))+NLMSG_ALIGN((nmsg)->nlmsg_len)))
-
-static int
-add_attr_l(struct nlmsghdr *n, unsigned 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) {
-		errno = ENOBUFS;
-		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;
-}
-
-static int
-add_attr_32(struct nlmsghdr *n, unsigned int maxlen, int type, uint32_t data)
-{
-	int len = RTA_LENGTH(sizeof(data));
-	struct rtattr *rta;
-
-	if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen) {
-		errno = ENOBUFS;
-		return -1;
-	}
-
-	rta = NLMSG_TAIL(n);
-	rta->rta_type = type;
-	rta->rta_len = len;
-	memcpy(RTA_DATA(rta), &data, sizeof(data));
-	n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
-
-	return 0;
-}
-
-struct nlma
-{
-	struct nlmsghdr hdr;
-	struct ifaddrmsg ifa; 
-	char buffer[64];
-};
-
-struct nlmr
-{
-	struct nlmsghdr hdr;
-	struct rtmsg rt;
-	char buffer[256];
-};
-
-int
-if_address(const char *ifname,
-	   const struct in_addr *address, const struct in_addr *netmask,
-	   const struct in_addr *broadcast, int action)
-{
-	struct nlma *nlm;
-	int retval = 0;
-
-	nlm = xzalloc(sizeof(*nlm));
-	nlm->hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
-	nlm->hdr.nlmsg_flags = NLM_F_REQUEST;
-	if (action >= 0) {
-		nlm->hdr.nlmsg_flags |= NLM_F_CREATE | NLM_F_REPLACE;
-		nlm->hdr.nlmsg_type = RTM_NEWADDR;
-	} else
-		nlm->hdr.nlmsg_type = RTM_DELADDR;
-	if (!(nlm->ifa.ifa_index = if_nametoindex(ifname))) {
-		free(nlm);
-		errno = ENODEV;
-		return -1;
-	}
-	nlm->ifa.ifa_family = AF_INET;
-	nlm->ifa.ifa_prefixlen = inet_ntocidr(*netmask);
-	/* This creates the aliased interface */
-	add_attr_l(&nlm->hdr, sizeof(*nlm), IFA_LABEL,
-		   ifname, strlen(ifname) + 1);
-	add_attr_l(&nlm->hdr, sizeof(*nlm), IFA_LOCAL,
-		   &address->s_addr, sizeof(address->s_addr));
-	if (action >= 0)
-		add_attr_l(&nlm->hdr, sizeof(*nlm), IFA_BROADCAST,
-			   &broadcast->s_addr, sizeof(broadcast->s_addr));
-
-	if (send_netlink(&nlm->hdr) == -1)
-		retval = -1;
-	free(nlm);
-	return retval;
-}
-
-int
-if_route(const char *ifname,
-	 const struct in_addr *destination, const struct in_addr *netmask,
-	 const struct in_addr *gateway, int metric, int action)
-{
-	struct nlmr *nlm;
-	unsigned int ifindex;
-	int retval = 0;
-
-
-	if (!(ifindex = if_nametoindex(ifname))) {
-		errno = ENODEV;
-		return -1;
-	}
-
-	nlm = xzalloc(sizeof(*nlm));
-	nlm->hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
-	nlm->hdr.nlmsg_type = RTM_NEWROUTE;
-	if (action == 0)
-            nlm->hdr.nlmsg_flags = NLM_F_REPLACE;
-	else if (action > 0)
-		/*
-		 * ers@google:
-		 * commented out NLM_F_EXCL here and below. We
-		 * sometimes keep one interface up while we are
-		 * configuring the other one, and this flag
-		 * causes route addition to fail.
-		 */
-		nlm->hdr.nlmsg_flags = NLM_F_CREATE /* | NLM_F_EXCL */;
-	else
-		nlm->hdr.nlmsg_type = RTM_DELROUTE;
-	nlm->hdr.nlmsg_flags |= NLM_F_REQUEST;
-	nlm->rt.rtm_family = AF_INET;
-	nlm->rt.rtm_table = RT_TABLE_MAIN;
-
-	if (action < 0)
-		nlm->rt.rtm_scope = RT_SCOPE_NOWHERE;
-	else {
-		nlm->hdr.nlmsg_flags |= NLM_F_CREATE /*| NLM_F_EXCL*/;
-		nlm->rt.rtm_protocol = RTPROT_BOOT;
-		if (gateway->s_addr == INADDR_ANY)
-			nlm->rt.rtm_scope = RT_SCOPE_LINK;
-		else
-			nlm->rt.rtm_scope = RT_SCOPE_UNIVERSE;
-		nlm->rt.rtm_type = RTN_UNICAST;
-	}
-
-	nlm->rt.rtm_dst_len = inet_ntocidr(*netmask);
-	add_attr_l(&nlm->hdr, sizeof(*nlm), RTA_DST,
-		   &destination->s_addr, sizeof(destination->s_addr));
-	add_attr_l(&nlm->hdr, sizeof(*nlm), RTA_GATEWAY,
-		   &gateway->s_addr, sizeof(gateway->s_addr));
-
-	add_attr_32(&nlm->hdr, sizeof(*nlm), RTA_OIF, ifindex);
-	add_attr_32(&nlm->hdr, sizeof(*nlm), RTA_PRIORITY, metric);
-
-	if (send_netlink(&nlm->hdr) == -1)
-		retval = -1;
-	free(nlm);
-	return retval;
-}