1 /* $NetBSD: compat___getmntinfo13.c,v 1.1 2019/09/22 22:59:38 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 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___getmntinfo13.c,v 1.1 2019/09/22 22:59:38 christos Exp $"); 35 #endif /* LIBC_SCCS and not lint */ 36 37 #define __LIBC12_SOURCE__ 38 39 #include "namespace.h" 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 44 #include <assert.h> 45 #include <compat/sys/statvfs.h> 46 #include <string.h> 47 #include <stdlib.h> 48 49 __warn_references(__getmntinfo13, 50 "warning: reference to obsolete __getmntinfo13(); use statvfs()") 51 52 __strong_alias(__getmntinfo13, __compat___getmntinfo13) 53 54 /* 55 * Return information about mounted filesystems. 56 */ 57 int 58 __compat___getmntinfo13(struct statvfs90 **mntbufp, int flags) 59 { 60 static struct statvfs90 *mntbuf; 61 static int mntsize; 62 static size_t bufsize; 63 64 _DIAGASSERT(mntbufp != NULL); 65 66 if (mntsize <= 0 && 67 (mntsize = __compat_getvfsstat(NULL, 0L, MNT_NOWAIT)) == -1) 68 return (0); 69 if (bufsize > 0 && 70 (mntsize = __compat_getvfsstat(mntbuf, bufsize, flags)) == -1) 71 return (0); 72 while (bufsize <= mntsize * sizeof(struct statvfs90)) { 73 if (mntbuf) 74 free(mntbuf); 75 bufsize = (mntsize + 1) * sizeof(struct statvfs90); 76 if ((mntbuf = malloc(bufsize)) == NULL) 77 return (0); 78 if ((mntsize = __compat_getvfsstat(mntbuf, bufsize, 79 flags)) == -1) 80 return (0); 81 } 82 *mntbufp = mntbuf; 83 return (mntsize); 84 } 85