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-rw-r--r--sysdeps/generic/if_index.c5
-rw-r--r--sysdeps/generic/net/if.h50
2 files changed, 52 insertions, 3 deletions
diff --git a/sysdeps/generic/if_index.c b/sysdeps/generic/if_index.c
index e8af824e66..4dc2a5511a 100644
--- a/sysdeps/generic/if_index.c
+++ b/sysdeps/generic/if_index.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1997,98,99,2000 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
@@ -16,8 +16,8 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <net/if.h>
 #include <errno.h>
-#define __need_NULL
 #include <stddef.h>
 
 unsigned int
@@ -36,7 +36,6 @@ if_indextoname (unsigned int ifindex, char *ifname)
 }
 stub_warning (if_indextoname)
 
-struct if_nameindex;		/* inhibit warning */
 void
 if_freenameindex (struct if_nameindex *ifn)
 {
diff --git a/sysdeps/generic/net/if.h b/sysdeps/generic/net/if.h
new file mode 100644
index 0000000000..fcfdbdb22a
--- /dev/null
+++ b/sysdeps/generic/net/if.h
@@ -0,0 +1,50 @@
+/* net/if.h -- declarations for inquiring about network interfaces
+   Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _NET_IF_H
+
+#define _NET_IF_H	1
+#include <features.h>
+
+
+__BEGIN_DECLS
+
+/* Convert an interface name to an index, and vice versa.  */
+
+extern unsigned int if_nametoindex (__const char *__ifname) __THROW;
+extern char *if_indextoname (unsigned int __ifindex, char *__ifname) __THROW;
+
+/* Return a list of all interfaces and their indices.  */
+
+struct if_nameindex
+  {
+    unsigned int if_index;	/* 1, 2, ... */
+    char *if_name;		/* null terminated name: "eth0", ... */
+  };
+
+extern struct if_nameindex *if_nameindex (void) __THROW;
+
+/* Free the data returned from if_nameindex.  */
+
+extern void if_freenameindex (struct if_nameindex *__ptr) __THROW;
+
+__END_DECLS
+
+
+#endif /* net/if.h */