1/* 2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23/* 24 * Copyright (c) 1995 25 * The Regents of the University of California. All rights reserved. 26 * 27 * Redistribution and use in source and binary forms, with or without 28 * modification, are permitted provided that the following conditions 29 * are met: 30 * 1. Redistributions of source code must retain the above copyright 31 * notice, this list of conditions and the following disclaimer. 32 * 2. Redistributions in binary form must reproduce the above copyright 33 * notice, this list of conditions and the following disclaimer in the 34 * documentation and/or other materials provided with the distribution. 35 * 3. All advertising materials mentioning features or use of this software 36 * must display the following acknowledgement: 37 * This product includes software developed by the University of 38 * California, Berkeley and its contributors. 39 * 4. Neither the name of the University nor the names of its contributors 40 * may be used to endorse or promote products derived from this software 41 * without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 */ 55 56#include <sys/param.h> 57#include <sys/mount.h> 58#include <sys/sysctl.h> 59#include <errno.h> 60#include <kvm.h> 61#include <string.h> 62 63int getvfsbyname(const char *, struct vfsconf *); 64 65/* 66 * Given a filesystem name, determine if it is resident in the kernel, 67 * and if it is resident, return its vfsconf structure. 68 */ 69int 70getvfsbyname(fsname, vfcp) 71 const char *fsname; 72 struct vfsconf *vfcp; 73{ 74 int name[4], maxtypenum, cnt; 75 size_t buflen; 76 77 name[0] = CTL_VFS; 78 name[1] = VFS_GENERIC; 79 name[2] = VFS_MAXTYPENUM; 80 buflen = 4; 81 if (sysctl(name, 3, &maxtypenum, &buflen, (void *)0, (size_t)0) < 0) 82 return (-1); 83 name[2] = VFS_CONF; 84 buflen = sizeof *vfcp; 85 for (cnt = 0; cnt < maxtypenum; cnt++) { 86 name[3] = cnt; 87 if (sysctl(name, 4, vfcp, &buflen, (void *)0, (size_t)0) < 0) { 88 if (errno != ENOTSUP) 89 return (-1); 90 continue; 91 } 92 if (!strcmp(fsname, vfcp->vfc_name)) 93 return (0); 94 } 95 errno = ENOENT; 96 return (-1); 97} 98