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import of dnsmasq-2.25.tar.gz

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This commit is contained in:
Simon Kelley
2006-01-14 20:33:46 +00:00
parent b8187c80a8
commit e17fb629a2
19 changed files with 2171 additions and 354 deletions
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33
src/dhcp.c
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@@ -224,7 +224,17 @@ void dhcp_packet(struct daemon *daemon, time_t now)
#endif
{
struct in_addr iface_netmask, iface_broadcast;
#ifdef HAVE_RTNETLINK
static int warned = 0;
if (!warned)
{
syslog(LOG_WARNING, _("Cannot use RTnetlink socket, falling back to ioctl API"));
warned = 1;
}
#endif
if (ioctl(daemon->dhcpfd, SIOCGIFNETMASK, &ifr) < 0)
return;
iface_netmask = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr;
@@ -447,24 +457,29 @@ struct dhcp_context *address_available(struct dhcp_context *context, struct in_a
struct dhcp_context *narrow_context(struct dhcp_context *context, struct in_addr taddr)
{
/* We start of with a set of possible contexts, all on the current subnet.
/* We start of with a set of possible contexts, all on the current physical interface.
These are chained on ->current.
Here we have an address, and return the actual context correponding to that
address. Note that none may fit, if the address came a dhcp-host and is outside
any dhcp-range. In that case we return a static range is possible, or failing that,
any context on the subnet. (If there's more than one, this is a dodgy configuration:
maybe there should be a warning.) */
any dhcp-range. In that case we return a static range if possible, or failing that,
any context on the correct subnet. (If there's more than one, this is a dodgy
configuration: maybe there should be a warning.) */
struct dhcp_context *tmp = address_available(context, taddr);
struct dhcp_context *tmp;
if (tmp)
if ((tmp = address_available(context, taddr)))
return tmp;
for (tmp = context; tmp; tmp = tmp->current)
if (tmp->flags & CONTEXT_STATIC)
if (is_same_net(taddr, tmp->start, tmp->netmask) &&
(tmp->flags & CONTEXT_STATIC))
return tmp;
return context;
for (tmp = context; tmp; tmp = tmp->current)
if (is_same_net(taddr, tmp->start, tmp->netmask))
return tmp;
return NULL;
}
struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr)