lib/libc/compat/sys/compat_getfh.c

   1 /*      $NetBSD: compat_getfh.c,v 1.6 2008/04/28 20:22:59 martin Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2006 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@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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32
  33 #include <sys/cdefs.h>
  34 #if defined(LIBC_SCCS) && !defined(lint)
  35 __RCSID("$NetBSD: compat_getfh.c,v 1.6 2008/04/28 20:22:59 martin Exp $");
  36 #endif /* LIBC_SCCS and not lint */
  37
  38 #define __LIBC12_SOURCE__
  39
  40 #include <sys/types.h>
  41 #include <sys/mount.h>
  42 #include <compat/include/fstypes.h>
  43
  44 #include <errno.h>
  45
  46 __warn_references(getfh,
  47     "warning: reference to compatibility getfh(); include <sys/mount.h> to generate correct reference")
  48
  49
  50 int     __getfh30(const char *, void*, size_t *);
  51 int     getfh(const char *path, struct compat_30_fhandle *fhp);
  52
  53 /*
  54  * Convert old getfh() call to new calling convention
  55  */
  56 int
  57 getfh(const char *path, struct compat_30_fhandle *fhp)
  58 {
  59         size_t fh_size = sizeof(*fhp);
  60         int ret;
  61
  62         ret = __getfh30(path, (void*)fhp, &fh_size);
  63         if (ret != 0) {
  64                 return ret;
  65         }
  66         if (fh_size != FHANDLE30_SIZE) {
  67                 errno = EINVAL;
  68                 return -1;
  69         }
  70         return 0;
  71 }