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      1 /*	$NetBSD: compat_statfs.c,v 1.9 2019/10/04 01:28:03 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2004, 2019 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      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 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 __RCSID("$NetBSD: compat_statfs.c,v 1.9 2019/10/04 01:28:03 christos Exp $");
     35 #endif /* LIBC_SCCS and not lint */
     36 
     37 #define __LIBC12_SOURCE__
     38 
     39 #include "namespace.h"
     40 #include <sys/types.h>
     41 #include <sys/param.h>
     42 #include <sys/mount.h>
     43 #include <compat/sys/mount.h>
     44 #include <compat/include/fstypes.h>
     45 #include <compat/sys/statvfs.h>
     46 #include <string.h>
     47 #include <stdlib.h>
     48 
     49 __warn_references(statfs,
     50     "warning: reference to obsolete statfs(); use statvfs()")
     51 
     52 __warn_references(fstatfs,
     53     "warning: reference to obsolete fstatfs(); use fstatvfs()")
     54 
     55 __warn_references(fhstatfs,
     56     "warning: reference to obsolete fhstatfs(); use fhstatvfs()")
     57 
     58 __warn_references(getfsstat,
     59     "warning: reference to obsolete getfsstat(); use getvfsstat()")
     60 
     61 __strong_alias(statfs, __compat_statfs)
     62 __strong_alias(fstatfs, __compat_fstatfs)
     63 __strong_alias(fhstatfs, __compat_fhstatfs)
     64 __strong_alias(getfsstat, __compat_getfsstat)
     65 
     66 int
     67 __compat_statfs(const char *file, struct statfs12 *ost)
     68 {
     69 	struct statvfs nst;
     70 	int ret;
     71 
     72 	if ((ret = __statvfs90(file, &nst)) == -1)
     73 		return ret;
     74 	statvfs_to_statfs12(&nst, ost);
     75 	return ret;
     76 }
     77 
     78 int
     79 __compat_fstatfs(int f, struct statfs12 *ost)
     80 {
     81 	struct statvfs nst;
     82 	int ret;
     83 
     84 	if ((ret = __fstatvfs90(f, &nst)) == -1)
     85 		return ret;
     86 	statvfs_to_statfs12(&nst, ost);
     87 	return ret;
     88 }
     89 
     90 int
     91 __compat_fhstatfs(const struct compat_30_fhandle *fh, struct statfs12 *ost)
     92 {
     93 	struct statvfs nst;
     94 	int ret;
     95 
     96 	if ((ret = __fhstatvfs190(fh, FHANDLE30_SIZE, &nst, ST_WAIT)) == -1)
     97 		return ret;
     98 	statvfs_to_statfs12(&nst, ost);
     99 	return ret;
    100 }
    101 
    102 int
    103 __compat_getfsstat(struct statfs12 *ost, long size, int flags)
    104 {
    105 	struct statvfs *nst;
    106 	int ret, i;
    107 	size_t bsize = (size_t)(size / sizeof(*ost)) * sizeof(*nst);
    108 
    109 	if (ost != NULL) {
    110 		if ((nst = malloc(bsize)) == NULL)
    111 			return -1;
    112 	} else
    113 		nst = NULL;
    114 
    115 	if ((ret = __getvfsstat90(nst, bsize, flags)) == -1)
    116 		goto done;
    117 	if (nst)
    118 		for (i = 0; i < ret; i++)
    119 			statvfs_to_statfs12(&nst[i], &ost[i]);
    120 done:
    121 	if (nst)
    122 		free(nst);
    123 	return ret;
    124 }
    125