| Elliott Hughes | fd936ae | 2016-08-12 10:16:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| Elliott Hughes | dd6763a | 2018-10-04 16:35:13 -0700 | [diff] [blame] | 29 | #pragma once |
| Elliott Hughes | fd936ae | 2016-08-12 10:16:34 -0700 | [diff] [blame] | 30 | |
| Elliott Hughes | dd6763a | 2018-10-04 16:35:13 -0700 | [diff] [blame] | 31 | /** |
| 32 | * @file bits/seek_constants.h |
| 33 | * @brief The `SEEK_` constants. |
| 34 | */ |
| 35 | |
| 36 | /** Seek to an absolute offset. */ |
| Elliott Hughes | fd936ae | 2016-08-12 10:16:34 -0700 | [diff] [blame] | 37 | #define SEEK_SET 0 |
| Elliott Hughes | dd6763a | 2018-10-04 16:35:13 -0700 | [diff] [blame] | 38 | /** Seek relative to the current offset. */ |
| Elliott Hughes | fd936ae | 2016-08-12 10:16:34 -0700 | [diff] [blame] | 39 | #define SEEK_CUR 1 |
| Elliott Hughes | dd6763a | 2018-10-04 16:35:13 -0700 | [diff] [blame] | 40 | /** Seek relative to the end of the file. */ |
| Elliott Hughes | fd936ae | 2016-08-12 10:16:34 -0700 | [diff] [blame] | 41 | #define SEEK_END 2 |
| Elliott Hughes | 31c7309 | 2019-05-07 10:03:02 -0700 | [diff] [blame] | 42 | |
| 43 | #if defined(__USE_GNU) |
| 44 | |
| 45 | /** |
| 46 | * Seek to the first data (non-hole) location in the file |
| 47 | * greater than or equal to the given offset. |
| 48 | * |
| 49 | * See [lseek(2)](http://man7.org/linux/man-pages/man2/lseek.2.html). |
| 50 | */ |
| 51 | #define SEEK_DATA 3 |
| 52 | |
| 53 | /** |
| 54 | * Seek to the first hole (non-data) location in the file |
| 55 | * greater than or equal to the given offset. |
| 56 | * |
| 57 | * See [lseek(2)](http://man7.org/linux/man-pages/man2/lseek.2.html). |
| 58 | */ |
| 59 | #define SEEK_HOLE 4 |
| 60 | |
| 61 | #endif |