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Add Linux support to:

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3733.   [func]          Improve interface scanning support.  Interface
                        information will be automatically updated if the
                        OS supports routing sockets (MacOS, *BSD, Linux).
                        Use "automatic-interface-scan no;" to disable.

                        Add "rndc scan" to trigger a scan. [RT #23027]
This commit is contained in:
Mark Andrews
2014-02-10 09:46:54 +11:00
parent f2016fcecf
commit 850b5e8093
6 changed files with 71 additions and 12 deletions
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44
lib/isc/unix/socket.c
View File

@@ -28,6 +28,11 @@
#include <sys/time.h>
#include <sys/uio.h>
#if defined(HAVE_LINUX_NETLINK_H) && defined(HAVE_LINUX_RTNETLINK_H)
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
@@ -2477,10 +2482,41 @@ opensocket(isc__socketmgr_t *manager, isc__socket_t *sock,
sock->fd = socket(sock->pf, SOCK_STREAM, 0);
break;
case isc_sockettype_raw:
sock->fd = socket(sock->pf, SOCK_RAW, 0);
#ifdef PF_ROUTE
if (sock->pf == PF_ROUTE)
sock->bound = 1;
errno = EPFNOSUPPORT;
/*
* PF_ROUTE is a alias for PF_NETLINK on linux.
*/
#if defined(PF_ROUTE)
if (sock->fd == -1 && sock->pf == PF_ROUTE) {
#ifdef NETLINK_ROUTE
sock->fd = socket(sock->pf, SOCK_RAW,
NETLINK_ROUTE);
#else
sock->fd = socket(sock->pf, SOCK_RAW, 0);
#endif
if (sock->fd != -1) {
#ifdef NETLINK_ROUTE
struct sockaddr_nl sa;
int n;
/*
* Do an implicit bind.
*/
memset(&sa, 0, sizeof(sa));
sa.nl_family = AF_NETLINK;
sa.nl_groups = RTMGRP_IPV4_IFADDR |
RTMGRP_IPV6_IFADDR;
n = bind(sock->fd,
(struct sockaddr *) &sa,
sizeof(sa));
if (n < 0) {
close(sock->fd);
sock->fd = -1;
}
#endif
sock->bound = 1;
}
}
#endif
break;
case isc_sockettype_fdwatch: