/* * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <string.h> #include <sys/mount.h> #include <sys/sysctl.h> #include "sysctl_fsid.h" int sysctl_fsid(int op, fsid_t *fsid, void *oldp, size_t *oldlenp, void *newp, size_t newlen) { int ctlname[CTL_MAXNAME+2]; size_t ctllen; const char *sysstr = "vfs.generic.ctlbyfsid"; struct vfsidctl vc; ctllen = CTL_MAXNAME+2; if (sysctlnametomib(sysstr, ctlname, &ctllen) == -1) return (-1); ctlname[ctllen] = op; memset(&vc, 0, sizeof(vc)); vc.vc_vers = VFS_CTL_VERS1; vc.vc_fsid = *fsid; vc.vc_ptr = newp; vc.vc_len = newlen; return (sysctl(ctlname, ctllen + 1, oldp, oldlenp, &vc, sizeof(vc))); }