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/*
* Copyright (C) 2008 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,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#define _FCNTL_H
/**
* @file fcntl.h
* @brief File control operations.
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <linux/fadvise.h>
#include <linux/falloc.h>
#include <linux/fcntl.h>
#include <linux/stat.h>
#include <linux/uio.h>
#include <bits/fcntl.h>
#include <bits/seek_constants.h>
#if defined(__USE_GNU) || defined(__USE_BSD)
#include <bits/lockf.h>
#endif
__BEGIN_DECLS
#if defined(__LP64__)
/* LP64 kernels don't have F_*64 defines because their flock is 64-bit. */
/** Flag for flock(). */
#define F_GETLK64 F_GETLK
/** Flag for flock(). */
#define F_SETLK64 F_SETLK
/** Flag for flock(). */
#define F_SETLKW64 F_SETLKW
#elif defined(__USE_FILE_OFFSET64)
/* For _FILE_OFFSET_BITS=64, redirect the constants to the off64_t variants. */
#undef F_GETLK
#undef F_SETLK
#undef F_SETLKW
/** Flag for flock(). */
#define F_GETLK F_GETLK64
/** Flag for flock(). */
#define F_SETLK F_SETLK64
/** Flag for flock(). */
#define F_SETLKW F_SETLKW64
#endif
/** Flag for open(). */
#define O_ASYNC FASYNC
/** Flag for open(). */
#define O_RSYNC O_SYNC
#if __ANDROID_API__ >= 21
/** Flag for splice(). */
#define SPLICE_F_MOVE 1
/** Flag for splice(). */
#define SPLICE_F_NONBLOCK 2
/** Flag for splice(). */
#define SPLICE_F_MORE 4
/** Flag for splice(). */
#define SPLICE_F_GIFT 8
#endif
#if __ANDROID_API__ >= 26
/** Flag for sync_file_range(). */
#define SYNC_FILE_RANGE_WAIT_BEFORE 1
/** Flag for sync_file_range(). */
#define SYNC_FILE_RANGE_WRITE 2
/** Flag for sync_file_range(). */
#define SYNC_FILE_RANGE_WAIT_AFTER 4
#endif
/**
* [creat(2)](http://man7.org/linux/man-pages/man2/creat.2.html)
* creates a file.
*
* Returns a new file descriptor on success and returns -1 and sets `errno` on
* failure.
*/
int creat(const char* __path, mode_t __mode);
/** See creat(). */
int creat64(const char* __path, mode_t __mode) __INTRODUCED_IN(21);
/**
* [openat(2)](http://man7.org/linux/man-pages/man2/openat.2.html)
* opens (and possibly creates) a file.
*
* Returns a new file descriptor on success and returns -1 and sets `errno` on
* failure.
*/
int openat(int __dir_fd, const char* __path, int __flags, ...);
/** See openat(). */
int openat64(int __dir_fd, const char* __path, int __flags, ...) __INTRODUCED_IN(21);
/**
* [open(2)](http://man7.org/linux/man-pages/man2/open.2.html)
* opens (and possibly creates) a file.
*
* Returns a new file descriptor on success and returns -1 and sets `errno` on
* failure.
*/
int open(const char* __path, int __flags, ...);
/** See open(). */
int open64(const char* __path, int __flags, ...) __INTRODUCED_IN(21);
/**
* [splice(2)](http://man7.org/linux/man-pages/man2/splice.2.html)
* splices data to/from a pipe.
*
* Valid flags are `SPLICE_F_MOVE`, `SPLICE_F_NONBLOCK`, `SPLICE_F_MORE`, and
* `SPLICE_F_GIFT`.
*
* Returns the number of bytes spliced on success and returns -1 and sets
* `errno` on failure.
*
* Available since API level 21.
*/
ssize_t splice(int __in_fd, off64_t* __in_offset, int __out_fd, off64_t* __out_offset, size_t __length, unsigned int __flags) __INTRODUCED_IN(21);
/**
* [tee(2)](http://man7.org/linux/man-pages/man2/tee.2.html)
* duplicates data from one pipe to another.
*
* Valid flags are `SPLICE_F_MOVE`, `SPLICE_F_NONBLOCK`, `SPLICE_F_MORE`, and
* `SPLICE_F_GIFT`.
*
* Returns the number of bytes duplicated on success and returns -1 and sets
* `errno` on failure.
*
* Available since API level 21.
*/
ssize_t tee(int __in_fd, int __out_fd, size_t __length, unsigned int __flags) __INTRODUCED_IN(21);
/**
* [vmsplice(2)](http://man7.org/linux/man-pages/man2/vmsplice.2.html)
* splices data to/from a pipe.
*
* Valid flags are `SPLICE_F_MOVE`, `SPLICE_F_NONBLOCK`, `SPLICE_F_MORE`, and
* `SPLICE_F_GIFT`.
*
* Returns the number of bytes spliced on success and returns -1 and sets
* `errno` on failure.
*
* Available since API level 21.
*/
ssize_t vmsplice(int __fd, const struct iovec* __iov, size_t __count, unsigned int __flags) __INTRODUCED_IN(21);
/**
* [fallocate(2)](http://man7.org/linux/man-pages/man2/fallocate.2.html)
* is a Linux-specific extension of posix_fallocate().
*
* Valid flags are `FALLOC_FL_KEEP_SIZE`, `FALLOC_FL_PUNCH_HOLE`,
* `FALLOC_FL_NO_HIDE_STALE`, `FALLOC_FL_COLLAPSE_RANGE`,
* `FALLOC_FL_ZERO_RANGE`, `FALLOC_FL_INSERT_RANGE`, and
* `FALLOC_FL_UNSHARE_RANGE`.
*
* Returns 0 on success and returns -1 and sets `errno` on failure.
*
* Available since API level 21.
*/
int fallocate(int __fd, int __mode, off_t __offset, off_t __length) __RENAME_IF_FILE_OFFSET64(fallocate64) __INTRODUCED_IN(21);
/** See fallocate(). */
int fallocate64(int __fd, int __mode, off64_t __offset, off64_t __length) __INTRODUCED_IN(21);
/**
* [posix_fadvise(2)](http://man7.org/linux/man-pages/man2/posix_fadvise.2.html)
* declares an expected access pattern for file data.
*
* Valid flags are `POSIX_FADV_NORMAL`, `POSIX_FADV_RANDOM`,
* `POSIX_FADV_SEQUENTIAL`, `POSIX_FADV_WILLNEED`, `POSIX_FADV_DONTNEED`,
* and `POSIX_FADV_NOREUSE`.
*
* Returns 0 on success and returns an error number on failure.
*
* Available since API level 21.
*/
int posix_fadvise(int __fd, off_t __offset, off_t __length, int __advice) __RENAME_IF_FILE_OFFSET64(posix_fadvise64) __INTRODUCED_IN(21);
/** See posix_fadvise(). */
int posix_fadvise64(int __fd, off64_t __offset, off64_t __length, int __advice) __INTRODUCED_IN(21);
/**
* [posix_fallocate(2)](http://man7.org/linux/man-pages/man2/posix_fallocate.2.html)
* allocates file space.
*
* Returns 0 on success and returns an error number on failure.
*
* Available since API level 21.
*/
int posix_fallocate(int __fd, off_t __offset, off_t __length) __RENAME_IF_FILE_OFFSET64(posix_fallocate64) __INTRODUCED_IN(21);
/** See posix_fallocate(). */
int posix_fallocate64(int __fd, off64_t __offset, off64_t __length) __INTRODUCED_IN(21);
#if defined(__USE_GNU)
/**
* [readahead(2)](http://man7.org/linux/man-pages/man2/readahead.2.html)
* initiates readahead for the given file.
*
* Returns 0 on success and returns -1 and sets `errno` on failure.
*/
ssize_t readahead(int __fd, off64_t __offset, size_t __length);
/**
* [sync_file_range(2)](http://man7.org/linux/man-pages/man2/sync_file_range.2.html)
* syncs part of a file with disk.
*
* Valid flags are `SYNC_FILE_RANGE_WAIT_BEFORE`, `SYNC_FILE_RANGE_WRITE`, and
* `SYNC_FILE_RANGE_WAIT_AFTER`.
*
* Returns 0 on success and returns -1 and sets `errno` on failure.
*/
int sync_file_range(int __fd, off64_t __offset, off64_t __length, unsigned int __flags) __INTRODUCED_IN(26);
#endif
#if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS)
#include <bits/fortify/fcntl.h>
#endif
__END_DECLS