libc/include/bits/seek_constants.h

/*
 * Copyright (C) 2016 The Android Open Source Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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 */

#pragma once

/**
 * @file bits/seek_constants.h
 * @brief The `SEEK_` constants.
 */

/** Seek to an absolute offset. */
#define SEEK_SET 0
/** Seek relative to the current offset. */
#define SEEK_CUR 1
/** Seek relative to the end of the file. */
#define SEEK_END 2

#if defined(__USE_GNU)

/**
 * Seek to the first data (non-hole) location in the file
 * greater than or equal to the given offset.
 *
 * See [lseek(2)](http://man7.org/linux/man-pages/man2/lseek.2.html).
 */
#define SEEK_DATA 3

/**
 * Seek to the first hole (non-data) location in the file
 * greater than or equal to the given offset.
 *
 * See [lseek(2)](http://man7.org/linux/man-pages/man2/lseek.2.html).
 */
#define SEEK_HOLE 4

#endif