fcntl.h
2.37 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
/*
* Copyright (C) 2016 Eistec AB
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @file
* @ingroup posix
* @brief POSIX compatible fcntl.h definitions
* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
*
* @see http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/fcntl.h.html
*/
#ifndef DOXYGEN
#if defined(CPU_NATIVE) || MODULE_NEWLIB
/* If building on native or newlib we need to use the system header instead */
#pragma GCC system_header
/* without the GCC pragma above #include_next will trigger a pedantic error */
#include_next <fcntl.h>
#else
#ifndef FCNTL_H_
#define FCNTL_H_
#include <sys/types.h> /* for mode_t, off_t */
#ifdef __cplusplus
extern "C" {
#endif
/* Constants used for the flags in fcntl and open */
/* The names of the constants are defined by POSIX but most of these numbers
* were chosen somewhat arbitrarily */
#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
#define O_RDONLY 0 /* Read only */
#define O_WRONLY 1 /* Write only */
#define O_RDWR 2 /* Read+write */
#define O_APPEND 0x0008 /* Set append mode */
#define O_CREAT 0x0010 /* Create file if it does not exist */
#define O_TRUNC 0x0020 /* Truncate flag */
#define O_EXCL 0x0040 /* Exclusive use flag */
#define F_DUPFD 0 /* Duplicate file descriptor */
#define F_GETFD 1 /* Get file descriptor flags */
#define F_SETFD 2 /* Set file descriptor flags */
#define F_GETFL 3 /* Get file status flags */
#define F_SETFL 4 /* Set file status flags */
#define F_GETOWN 5 /* Get owner */
#define F_SETOWN 6 /* Set owner */
#define F_GETLK 7 /* Get record-locking information */
#define F_SETLK 8 /* Set or Clear a record-lock (Non-Blocking) */
#define F_SETLKW 9 /* Set or Clear a record-lock (Blocking) */
#define FD_CLOEXEC 1 /* Close the file descriptor upon execution of an exec family function */
int creat(const char *, mode_t);
int fcntl(int, int, ...);
int open(const char *, int, ...);
int openat(int, const char *, int, ...);
int posix_fadvise(int, off_t, off_t, int);
int posix_fallocate(int, off_t, off_t);
#ifdef __cplusplus
}
#endif
#endif /* FCNTL_H_ */
#endif /* CPU_NATIVE */
#endif /* DOXYGEN */
/** @} */