projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| ad3c9f2a A |
1 | /* |
| 2 | * Copyright (c) 2011 Apple 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 | #include <errno.h> | |
| 25 | #include <unistd.h> | |
| 26 | #include <System/sys/fsctl.h> | |
| 27 | ||
| 28 | /* | |
| 29 | * Sync a mounted filesystem, without syncing others. | |
| 30 | * There are currently two flags that can be used: | |
| 31 | * | |
| 32 | * SYNC_VOLUME_FULLSYNC causes it to try to push the | |
| 33 | * data to the platter (otherwise, it just pushes it | |
| 34 | * to the disk drive, where it may remain in cache | |
| 35 | * for a while). | |
| 36 | * | |
| 37 | * SYNC_VOLUME_WAIT causes it to wait until the writes | |
| 38 | * have completed. Otherwise, it'll return as soon | |
| 39 | * as the requests have been made. | |
| 40 | * | |
| 41 | * The functions are a simple wrapper for fsctl, and | |
| 42 | * return what it does. | |
| 43 | */ | |
| 44 | ||
| 45 | int | |
| 46 | sync_volume_np(const char *path, int flags) { | |
| 47 | int full_sync = 0; | |
| 48 | int terrno; | |
| 49 | int rv; | |
| 50 | ||
| 51 | if (flags & SYNC_VOLUME_FULLSYNC) | |
| 52 | full_sync |= FSCTL_SYNC_FULLSYNC; | |
| 53 | ||
| 54 | if (flags & SYNC_VOLUME_WAIT) | |
| 55 | full_sync |= FSCTL_SYNC_WAIT; | |
| 56 | ||
| 57 | terrno = errno; | |
| b061a43b | 58 | rv = (fsctl(path, FSIOC_SYNC_VOLUME, &full_sync, 0) == -1) ? errno : 0; |
| ad3c9f2a A |
59 | errno = terrno; |
| 60 | return rv; | |
| 61 | } | |
| 62 | ||
| 63 | int | |
| 64 | fsync_volume_np(int fd, int flags) { | |
| 65 | int full_sync = 0; | |
| 66 | int terrno; | |
| 67 | int rv; | |
| 68 | ||
| 69 | if (flags & SYNC_VOLUME_FULLSYNC) | |
| 70 | full_sync |= FSCTL_SYNC_FULLSYNC; | |
| 71 | ||
| 72 | if (flags & SYNC_VOLUME_WAIT) | |
| 73 | full_sync |= FSCTL_SYNC_WAIT; | |
| 74 | ||
| 75 | terrno = errno; | |
| 76 | rv = (ffsctl(fd, FSCTL_SYNC_VOLUME, &full_sync, 0) == -1) ? errno : 0; | |
| 77 | errno = terrno; | |
| 78 | return rv; | |
| 79 | } | |
| 80 |