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compat_getfh.c revision 1.2 
      1 /*	$NetBSD: compat_getfh.c,v 1.2 2006/07/13 19:09:06 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Martin Husemann <martin (at) NetBSD.org>.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 
     40 #include <sys/cdefs.h>
     41 #if defined(LIBC_SCCS) && !defined(lint)
     42 __RCSID("$NetBSD: compat_getfh.c,v 1.2 2006/07/13 19:09:06 martin Exp $");
     43 #endif /* LIBC_SCCS and not lint */
     44 
     45 #define __LIBC12_SOURCE__
     46 
     47 #include <sys/types.h>
     48 #include <sys/mount.h>
     49 
     50 __warn_references(getfh,
     51     "warning: reference to compatibility getfh(); include <sys/mount.h> to generate correct reference")
     52 
     53 /*
     54  * Old fhandle_t
     55  */
     56 
     57 /* Old, fixed size filehandle structures (used upto (including) 3.x) */
     58 struct compat_30_fid{
     59 	unsigned short	fid_len;
     60 	unsigned short	fid_reserved;
     61 	char		fid_data[16];
     62 };
     63 struct compat_30_fhandle {
     64 	fsid_t	fh_fsid;
     65 	struct compat_30_fid fh_fid;
     66 };
     67 
     68 int     __getfh30(const char *, fhandle_t*, size_t *);
     69 int	getfh(const char *path, struct compat_30_fhandle *fhp);
     70 
     71 /*
     72  * Convert old getfh() call to new calling convention
     73  */
     74 int
     75 getfh(const char *path, struct compat_30_fhandle *fhp)
     76 {
     77 	size_t fh_size = sizeof(*fhp);
     78 
     79 	return __getfh30(path, (void*)fhp, &fh_size);
     80 }
     81