/* * Copyright (c) 2011 Apple 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 <errno.h> #include <unistd.h> #include <System/sys/fsctl.h> /* * Sync a mounted filesystem, without syncing others. * There are currently two flags that can be used: * * SYNC_VOLUME_FULLSYNC causes it to try to push the * data to the platter (otherwise, it just pushes it * to the disk drive, where it may remain in cache * for a while). * * SYNC_VOLUME_WAIT causes it to wait until the writes * have completed. Otherwise, it'll return as soon * as the requests have been made. * * The functions are a simple wrapper for fsctl, and * return what it does. */ int sync_volume_np(const char *path, int flags) { int full_sync = 0; int terrno; int rv; if (flags & SYNC_VOLUME_FULLSYNC) full_sync |= FSCTL_SYNC_FULLSYNC; if (flags & SYNC_VOLUME_WAIT) full_sync |= FSCTL_SYNC_WAIT; terrno = errno; rv = (fsctl(path, FSIOC_SYNC_VOLUME, &full_sync, 0) == -1) ? errno : 0; errno = terrno; return rv; } int fsync_volume_np(int fd, int flags) { int full_sync = 0; int terrno; int rv; if (flags & SYNC_VOLUME_FULLSYNC) full_sync |= FSCTL_SYNC_FULLSYNC; if (flags & SYNC_VOLUME_WAIT) full_sync |= FSCTL_SYNC_WAIT; terrno = errno; rv = (ffsctl(fd, FSCTL_SYNC_VOLUME, &full_sync, 0) == -1) ? errno : 0; errno = terrno; return rv; }