[PATCH] minios: add a barebone net/if.h

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

net/if.h is a standard header but unfortunately lwip doesn't provide it
for any target but linux.
Therefore I am adding a net/if.h, with an empty implementation
of the declared functions.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff -r 40668908260c extras/mini-os/include/posix/net/if.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extras/mini-os/include/posix/net/if.h	Mon Nov 10 11:41:11 2008 +0000
@@ -0,0 +1,85 @@
+/*
+ * This code is mostly taken from NetBSD net/if.h 
+ * Changes: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
+ *
+ ******************************************************************************
+ *
+ * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by William Studenmund and Jason R. Thorpe.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1989, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#ifndef _NET_IF_H_
+#define _NET_IF_H_
+
+/*
+ * Length of interface external name, including terminating '\0'.
+ * Note: this is the same size as a generic device's external name.
+ */
+#define IF_NAMESIZE 16
+
+struct if_nameindex {
+        unsigned int    if_index;       /* 1, 2, ... */
+        char            *if_name;       /* null terminated name: "le0", ... */
+};
+
+unsigned int if_nametoindex(const char *);
+char *  if_indextoname(unsigned int, char *);
+struct  if_nameindex * if_nameindex(void);
+void    if_freenameindex(struct if_nameindex *);
+
+#endif /* !_NET_IF_H_ */
+
diff -r 40668908260c extras/mini-os/lib/sys.c
--- a/extras/mini-os/lib/sys.c	Mon Nov 10 10:41:41 2008 +0000
+++ b/extras/mini-os/lib/sys.c	Mon Nov 10 11:41:11 2008 +0000
@@ -34,6 +34,7 @@
 #include <sys/unistd.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
+#include <net/if.h>
 #include <time.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -1324,6 +1325,12 @@
 unsupported_function(int, tcgetattr, 0);
 unsupported_function(int, poll, -1);
 
+/* net/if.h */
+unsupported_function_log(unsigned int, if_nametoindex, -1);
+unsupported_function_log(char *, if_indextoname, (char *) NULL);
+unsupported_function_log(struct  if_nameindex *, if_nameindex, (struct  if_nameindex *) NULL);
+unsupported_function_crash(if_freenameindex);
+
 /* Linuxish abi for the Caml runtime, don't support */
 unsupported_function_log(struct dirent *, readdir64, NULL);
 unsupported_function_log(int, getrusage, -1);