108f68ac6SBruce Evans /* 208f68ac6SBruce Evans * Copyright (c) 1995 308f68ac6SBruce Evans * The Regents of the University of California. All rights reserved. 408f68ac6SBruce Evans * 508f68ac6SBruce Evans * Redistribution and use in source and binary forms, with or without 608f68ac6SBruce Evans * modification, are permitted provided that the following conditions 708f68ac6SBruce Evans * are met: 808f68ac6SBruce Evans * 1. Redistributions of source code must retain the above copyright 908f68ac6SBruce Evans * notice, this list of conditions and the following disclaimer. 1008f68ac6SBruce Evans * 2. Redistributions in binary form must reproduce the above copyright 1108f68ac6SBruce Evans * notice, this list of conditions and the following disclaimer in the 1208f68ac6SBruce Evans * documentation and/or other materials provided with the distribution. 1308f68ac6SBruce Evans * 3. All advertising materials mentioning features or use of this software 1408f68ac6SBruce Evans * must display the following acknowledgement: 1508f68ac6SBruce Evans * This product includes software developed by the University of 1608f68ac6SBruce Evans * California, Berkeley and its contributors. 1708f68ac6SBruce Evans * 4. Neither the name of the University nor the names of its contributors 1808f68ac6SBruce Evans * may be used to endorse or promote products derived from this software 1908f68ac6SBruce Evans * without specific prior written permission. 2008f68ac6SBruce Evans * 2108f68ac6SBruce Evans * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2208f68ac6SBruce Evans * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2308f68ac6SBruce Evans * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2408f68ac6SBruce Evans * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2508f68ac6SBruce Evans * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2608f68ac6SBruce Evans * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2708f68ac6SBruce Evans * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2808f68ac6SBruce Evans * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2908f68ac6SBruce Evans * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3008f68ac6SBruce Evans * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3108f68ac6SBruce Evans * SUCH DAMAGE. 3208f68ac6SBruce Evans */ 3308f68ac6SBruce Evans 34ea8d448aSDavid E. O'Brien #if defined(LIBC_SCCS) && !defined(lint) 3508f68ac6SBruce Evans static char sccsid[] = "@(#)kvm_getvfsbyname.c 8.1 (Berkeley) 4/3/95"; 36ea8d448aSDavid E. O'Brien #endif /* LIBC_SCCS and not lint */ 37ea8d448aSDavid E. O'Brien #include <sys/cdefs.h> 38ea8d448aSDavid E. O'Brien __FBSDID("$FreeBSD$"); 3908f68ac6SBruce Evans 4008f68ac6SBruce Evans #include <sys/param.h> 4108f68ac6SBruce Evans #include <sys/mount.h> 4208f68ac6SBruce Evans #include <sys/sysctl.h> 4308f68ac6SBruce Evans #include <errno.h> 445965373eSMaxime Henrion #include <stdlib.h> 455965373eSMaxime Henrion #include <string.h> 4608f68ac6SBruce Evans 4708f68ac6SBruce Evans /* 4808f68ac6SBruce Evans * Given a filesystem name, determine if it is resident in the kernel, 495965373eSMaxime Henrion * and if it is resident, return its xvfsconf structure. 5008f68ac6SBruce Evans */ 515965373eSMaxime Henrion int 5208f68ac6SBruce Evans getvfsbyname(fsname, vfcp) 5308f68ac6SBruce Evans const char *fsname; 545965373eSMaxime Henrion struct xvfsconf *vfcp; 5508f68ac6SBruce Evans { 56ee51c92bSJohn Birrell #ifdef __NETBSD_SYSCALLS 57ee51c92bSJohn Birrell errno = ENOSYS; 58ee51c92bSJohn Birrell #else 595965373eSMaxime Henrion struct xvfsconf *xvfsp; 6008f68ac6SBruce Evans size_t buflen; 615965373eSMaxime Henrion int cnt, i; 6208f68ac6SBruce Evans 635965373eSMaxime Henrion if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) 6408f68ac6SBruce Evans return (-1); 655965373eSMaxime Henrion xvfsp = malloc(buflen); 665965373eSMaxime Henrion if (xvfsp == NULL) 6708f68ac6SBruce Evans return (-1); 685965373eSMaxime Henrion if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { 695965373eSMaxime Henrion free(xvfsp); 705965373eSMaxime Henrion return (-1); 7108f68ac6SBruce Evans } 725965373eSMaxime Henrion cnt = buflen / sizeof(struct xvfsconf); 735965373eSMaxime Henrion for (i = 0; i < cnt; i++) { 745965373eSMaxime Henrion if (strcmp(fsname, xvfsp[i].vfc_name) == 0) { 755965373eSMaxime Henrion memcpy(vfcp, xvfsp + i, sizeof(struct xvfsconf)); 765965373eSMaxime Henrion free(xvfsp); 7708f68ac6SBruce Evans return (0); 7808f68ac6SBruce Evans } 795965373eSMaxime Henrion } 805965373eSMaxime Henrion free(xvfsp); 8108f68ac6SBruce Evans errno = ENOENT; 82ee51c92bSJohn Birrell #endif 8308f68ac6SBruce Evans return (-1); 8408f68ac6SBruce Evans } 85