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Log SO_BINDTODEVICE use at startup.

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This commit is contained in:
Simon Kelley
2013-10-11 16:33:28 +01:00
parent 24b5a5d50b
commit 3b3f441189
3 changed files with 47 additions and 22 deletions
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30
src/dnsmasq.c
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@@ -50,6 +50,8 @@ int main (int argc, char **argv)
#if defined(HAVE_LINUX_NETWORK)
cap_user_header_t hdr = NULL;
cap_user_data_t data = NULL;
char *bound_device = NULL;
int did_bind = 0;
#endif
#if defined(HAVE_DHCP) || defined(HAVE_DHCP6)
struct dhcp_context *context;
@@ -239,18 +241,29 @@ int main (int argc, char **argv)
#if defined(HAVE_LINUX_NETWORK) && defined(HAVE_DHCP)
/* after enumerate_interfaces() */
bound_device = whichdevice();
if (daemon->dhcp)
{
if (!daemon->relay4)
bindtodevice(daemon->dhcpfd);
if (daemon->enable_pxe)
bindtodevice(daemon->pxefd);
if (!daemon->relay4 && bound_device)
{
bindtodevice(bound_device, daemon->dhcpfd);
did_bind = 1;
}
if (daemon->enable_pxe && bound_device)
{
bindtodevice(bound_device, daemon->pxefd);
did_bind = 1;
}
}
#endif
#if defined(HAVE_LINUX_NETWORK) && defined(HAVE_DHCP6)
if (daemon->doing_dhcp6 && !daemon->relay6)
bindtodevice(daemon->dhcp6fd);
if (daemon->doing_dhcp6 && !daemon->relay6 && bound_device)
{
bindtodevice(bound_device, daemon->dhcp6fd);
did_bind = 1;
}
#endif
}
else
@@ -659,6 +672,11 @@ int main (int argc, char **argv)
my_syslog(MS_DHCP | LOG_INFO, _("IPv6 router advertisement enabled"));
# endif
# ifdef HAVE_LINUX_NETWORK
if (did_bind)
my_syslog(MS_DHCP | LOG_INFO, _("DHCP, sockets bound exclusively to interface %s"), bound_device);
# endif
/* after dhcp_contruct_contexts */
if (daemon->dhcp || daemon->doing_dhcp6)
lease_find_interfaces(now);