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import of dnsmasq-2.16.tar.gz

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This commit is contained in:
Simon Kelley
2004-10-21 20:24:00 +01:00
parent 36717eeefc
commit fd9fa4811d
21 changed files with 1193 additions and 635 deletions
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26
src/dhcp.c
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@@ -18,13 +18,14 @@ void dhcp_init(struct daemon *daemon)
{
int fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
struct sockaddr_in saddr;
int oneopt = 1, zeroopt = 0;
int flags, oneopt = 1, zeroopt = 0;
struct dhcp_config *configs, *cp;
if (fd == -1)
die ("cannot create DHCP socket : %s", NULL);
if (
if ((flags = fcntl(fd, F_GETFL, 0)) == -1 ||
fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1 ||
#if defined(IP_PKTINFO)
setsockopt(fd, SOL_IP, IP_PKTINFO, &oneopt, sizeof(oneopt)) == -1 ||
#elif defined(IP_RECVIF)
@@ -72,6 +73,8 @@ void dhcp_init(struct daemon *daemon)
socket receive buffer size to one to avoid that. (zero is
rejected as non-sensical by some BSD kernels) */
if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETHERTYPE_IP))) == -1 ||
(flags = fcntl(fd, F_GETFL, 0)) == -1 ||
fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1 ||
setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &oneopt, sizeof(oneopt)) == -1)
die("cannot create DHCP packet socket: %s. "
"Is CONFIG_PACKET enabled in your kernel?", NULL);
@@ -160,7 +163,7 @@ void dhcp_packet(struct daemon *daemon, time_t now)
#else
{
struct iname *name;
for (name = daemon->if_names; names->isloop; names = names->next);
for (name = daemon->if_names; name->isloop; name = name->next);
strcpy(ifr.ifr_name, name->name);
}
#endif
@@ -257,7 +260,7 @@ void dhcp_packet(struct daemon *daemon, time_t now)
lease_prune(NULL, now); /* lose any expired leases */
newlen = dhcp_reply(daemon, iface_addr, ifr.ifr_name, sz, now);
lease_update_file(0, now);
lease_update_dns();
lease_update_dns(daemon);
if (newlen == 0)
return;
@@ -283,7 +286,9 @@ void dhcp_packet(struct daemon *daemon, time_t now)
dest.sin_addr = mess->ciaddr;
}
sendto(daemon->dhcpfd, mess, newlen, 0, (struct sockaddr *)&dest, sizeof(dest));
while(sendto(daemon->dhcpfd, mess, newlen, 0,
(struct sockaddr *)&dest, sizeof(dest)) == -1 &&
retry_send());
}
else
{
@@ -353,7 +358,8 @@ void dhcp_packet(struct daemon *daemon, time_t now)
iov[0].iov_len = sizeof(struct ether_header);
iov[1].iov_base = (char *)rawpacket;
iov[1].iov_len = ntohs(rawpacket->ip.ip_len);
writev(daemon->dhcp_raw_fd, iov, 2);
while (writev(daemon->dhcp_raw_fd, iov, 2) == -1 &&
errno == EINTR);
#else
struct sockaddr_ll dest;
@@ -362,9 +368,9 @@ void dhcp_packet(struct daemon *daemon, time_t now)
dest.sll_ifindex = iface_index;
dest.sll_protocol = htons(ETHERTYPE_IP);
memcpy(dest.sll_addr, hwdest, ETHER_ADDR_LEN);
sendto(daemon->dhcp_raw_fd, rawpacket, ntohs(rawpacket->ip.ip_len),
0, (struct sockaddr *)&dest, sizeof(dest));
while (sendto(daemon->dhcp_raw_fd, rawpacket, ntohs(rawpacket->ip.ip_len),
0, (struct sockaddr *)&dest, sizeof(dest)) == -1 &&
errno == EINTR);
#endif
}
}
@@ -624,7 +630,7 @@ void dhcp_update_configs(struct dhcp_config *configs)
(crec = cache_find_by_name(NULL, config->hostname, 0, F_IPV4)) &&
(crec->flags & F_HOSTS))
{
config->addr = crec->addr.addr.addr4;
config->addr = crec->addr.addr.addr.addr4;
config->flags |= CONFIG_ADDR;
}
}