123291Sbde/* 223291Sbde * Copyright (c) 1995 323291Sbde * The Regents of the University of California. All rights reserved. 423291Sbde * 523291Sbde * Redistribution and use in source and binary forms, with or without 623291Sbde * modification, are permitted provided that the following conditions 723291Sbde * are met: 823291Sbde * 1. Redistributions of source code must retain the above copyright 923291Sbde * notice, this list of conditions and the following disclaimer. 1023291Sbde * 2. Redistributions in binary form must reproduce the above copyright 1123291Sbde * notice, this list of conditions and the following disclaimer in the 1223291Sbde * documentation and/or other materials provided with the distribution. 1323291Sbde * 4. Neither the name of the University nor the names of its contributors 1423291Sbde * may be used to endorse or promote products derived from this software 1523291Sbde * without specific prior written permission. 1623291Sbde * 1723291Sbde * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1823291Sbde * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1923291Sbde * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2023291Sbde * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2123291Sbde * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2223291Sbde * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2323291Sbde * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2423291Sbde * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2523291Sbde * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2623291Sbde * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2723291Sbde * SUCH DAMAGE. 2823291Sbde */ 2923291Sbde 3090039Sobrien#if defined(LIBC_SCCS) && !defined(lint) 3123291Sbdestatic char sccsid[] = "@(#)kvm_getvfsbyname.c 8.1 (Berkeley) 4/3/95"; 3290039Sobrien#endif /* LIBC_SCCS and not lint */ 3390039Sobrien#include <sys/cdefs.h> 3490039Sobrien__FBSDID("$FreeBSD: releng/10.3/lib/libc/gen/getvfsbyname.c 165903 2007-01-09 00:28:16Z imp $"); 3523291Sbde 3623291Sbde#include <sys/param.h> 3723291Sbde#include <sys/mount.h> 3823291Sbde#include <sys/sysctl.h> 3923291Sbde#include <errno.h> 40101651Smux#include <stdlib.h> 41101651Smux#include <string.h> 4223291Sbde 4323291Sbde/* 4423291Sbde * Given a filesystem name, determine if it is resident in the kernel, 45101651Smux * and if it is resident, return its xvfsconf structure. 4623291Sbde */ 47101651Smuxint 4823291Sbdegetvfsbyname(fsname, vfcp) 4923291Sbde const char *fsname; 50101651Smux struct xvfsconf *vfcp; 5123291Sbde{ 52101651Smux struct xvfsconf *xvfsp; 5323291Sbde size_t buflen; 54101651Smux int cnt, i; 5523291Sbde 56101651Smux if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) 5723291Sbde return (-1); 58101651Smux xvfsp = malloc(buflen); 59101651Smux if (xvfsp == NULL) 60101651Smux return (-1); 61101651Smux if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { 62101651Smux free(xvfsp); 63101651Smux return (-1); 64101651Smux } 65101651Smux cnt = buflen / sizeof(struct xvfsconf); 66101651Smux for (i = 0; i < cnt; i++) { 67101651Smux if (strcmp(fsname, xvfsp[i].vfc_name) == 0) { 68101651Smux memcpy(vfcp, xvfsp + i, sizeof(struct xvfsconf)); 69101651Smux free(xvfsp); 70101651Smux return (0); 7123291Sbde } 7223291Sbde } 73101651Smux free(xvfsp); 7423291Sbde errno = ENOENT; 7523291Sbde return (-1); 7623291Sbde} 77