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authorRoland McGrath <roland@gnu.org>2002-07-24 22:56:44 +0000
committerRoland McGrath <roland@gnu.org>2002-07-24 22:56:44 +0000
commit7f1deee65e0a90d9e6699068b5d63a28d2546e12 (patch)
treeb75aefbdd5d6d8347e0d4d3f665d8e49fcf6c43b /sysdeps/mach
parent11d657d7278ae4f96f0f4c8655991f2818d0eeb9 (diff)
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Added <ifaddrs.h> interface with functions `getifaddrs', `freeifaddrs'.
This implementation supports only IPv4. * inet/ifaddrs.h: New file. * sysdeps/generic/ifaddrs.c: New file. * sysdeps/gnu/ifaddrs.c: New file. * inet/test-ifaddrs.c: New file. * inet/Makefile (routines): Add ifaddrs. (headers): Add ifaddrs.h here. (tests): Add test-ifaddrs. * inet/Versions (GLIBC_2.3): New set, add getifaddrs and freeifaddrs. * resolv/res_hconf.c (_res_hconf_reorder_addrs): Use an explicit socket call to get an AF_INET socket, instead of using __opensock. The SIOCGIFNETMASK ioctl will work only with a PF_INET socket. * sysdeps/generic/ifreq.h (__ifreq): Take third argument SOCKFD, if not -1 use it instead of calling __opensock. * sysdeps/unix/sysv/linux/ifreq.h (__ifreq): Likewise. * sysdeps/mach/hurd/ifreq.h (__ifreq): Take new argument and ignore it. * resolv/res_hconf.c (_res_hconf_reorder_addrs): Pass new argument. * sysdeps/mach/hurd/ifreq.h: New file. * sysdeps/generic/ifreq.h (__if_freereq): Take second argument NUM_IFS. * sysdeps/unix/sysv/linux/ifreq.h (__if_freereq): Likewise. * resolv/res_hconf.c (_res_hconf_reorder_addrs): Update caller.
Diffstat (limited to 'sysdeps/mach')
-rw-r--r--sysdeps/mach/hurd/ifreq.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/ifreq.h b/sysdeps/mach/hurd/ifreq.h
new file mode 100644
index 0000000000..737dee9285
--- /dev/null
+++ b/sysdeps/mach/hurd/ifreq.h
@@ -0,0 +1,74 @@
+/* Fetch the host's network interface list. Hurd version.
+ Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <net/if.h>
+#include <hurd.h>
+#include <hurd/pfinet.h>
+#include <sys/socket.h>
+#include <sys/mman.h>
+
+
+static inline void
+__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd)
+{
+ struct ifconf ifc;
+ file_t server;
+
+ server = _hurd_socket_server (PF_INET, 0);
+ if (server == MACH_PORT_NULL)
+ {
+ out:
+ *num_ifs = 0;
+ *ifreqs = NULL;
+ }
+ else
+ {
+ char *data = NULL;
+ size_t len = 0;
+ error_t err = __pfinet_siocgifconf (server, -1, &data, &len);
+ if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED)
+ {
+ /* On the first use of the socket server during the operation,
+ allow for the old server port dying. */
+ server = _hurd_socket_server (PF_INET, 1);
+ if (server == MACH_PORT_NULL)
+ goto out;
+ err = __pfinet_siocgifconf (server, -1, ifreqs, &len);
+ }
+ if (err)
+ goto out;
+
+ if (len % sizeof (struct ifreq) != 0)
+ {
+ munmap (data, len);
+ errno = EGRATUITOUS;
+ goto out;
+ }
+ *num_ifs = len / sizeof (struct ifreq);
+ *ifreqs = (struct ifreq *) data;
+ }
+
+}
+
+
+static inline void
+__if_freereq (struct ifreq *ifreqs, int num_ifs)
+{
+ munmap (ifreqs, num_ifs * sizeof (struct ifreq))
+}