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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/* O_*, F_*, FD_* bit values for SunOS 4.
Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _FCNTLBITS_H
#define _FCNTLBITS_H 1
/* File access modes for `open' and `fcntl'. */
#define O_RDONLY 0 /* Open read-only. */
#define O_WRONLY 1 /* Open write-only. */
#define O_RDWR 2 /* Open read/write. */
/* Bits OR'd into the second argument to open. */
#define O_CREAT 0x0200 /* Create file if it doesn't exist. */
#define O_EXCL 0x0800 /* Fail if file already exists. */
#define O_TRUNC 0x0400 /* Truncate file to zero length. */
#define O_NOCTTY 0x8000 /* Don't assign a controlling terminal. */
#if defined __USE_BSD || defined __USE_SVID
#define O_ASYNC 0x0040 /* Send SIGIO to owner when data is ready. */
#define O_FSYNC 0x2000 /* Synchronous writes. */
#define O_SYNC O_FSYNC
#endif
/* File status flags for `open' and `fcntl'. */
#define O_APPEND 0x0008 /* Writes append to the file. */
#define O_NONBLOCK 0x4000 /* Non-blocking I/O. */
/* Sun defines O_NDELAY one way for BSD behavior and another for System V
behavior. In the GNU C library, you get the BSD behavior unless you
define _USG_SOURCE without also defining _BSD_SOURCE or _GNU_SOURCE. */
#ifdef __USE_BSD
#define O_NDELAY 0x0004
#endif
#if !defined (O_NDELAY) && defined (__USE_SVID)
#define O_NDELAY 0x1000
#endif
#ifdef __USE_BSD
/* Bits in the file status flags returned by F_GETFL.
These are all the O_* flags, plus FREAD and FWRITE, which are
independent bits set by which of O_RDONLY, O_WRONLY, and O_RDWR, was
given to `open'. */
#define FREAD 1
#define FWRITE 2
/* Traditional Unix names the O_* bits. */
#define FASYNC O_ASYNC
#define FCREAT O_CREAT
#define FEXCL O_EXCL
#define FTRUNC O_TRUNC
#define FNOCTTY O_NOCTTY
#define FFSYNC O_FSYNC
#define FSYNC O_SYNC
#define FAPPEND O_APPEND
#define FNONBLOCK O_NONBLOCK
#define FNONBIO O_NONBLOCK
#define FNDELAY 0x0004 /* BSD O_NDELAY. */
#define FNBIO 0x1000 /* System V O_NDELAY. */
#endif
/* Mask for file access modes. This is system-dependent in case
some system ever wants to define some other flavor of access. */
#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
/* Values for the second argument to `fcntl'. */
#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. */
#ifdef __USE_BSD
#define F_GETOWN 5 /* Get owner (receiver of SIGIO). */
#define F_SETOWN 6 /* Set owner (receiver of SIGIO). */
#endif
#define F_GETLK 7 /* Get record locking info. */
#define F_SETLK 8 /* Set record locking info (non-blocking). */
#define F_SETLKW 9 /* Set record locking info (blocking). */
#ifdef __USE_BSD
#define F_RGETLK 10 /* Get remote record locking info. */
#define F_RSETLK 11 /* Set remote locking info (non-blocking). */
#define F_CNVT 12 /* Convert a fhandle to an open fd. */
#define F_RSETLKW 13 /* Set remote locking info (blocking). */
#endif
/* File descriptor flags used with F_GETFD and F_SETFD. */
#define FD_CLOEXEC 1 /* Close on exec. */
#include <gnu/types.h>
/* The structure describing an advisory lock. This is the type of the third
argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests. */
struct flock
{
short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
__off_t l_start; /* Offset where the lock begins. */
__off_t l_len; /* Size of the locked area; zero means until EOF. */
short int l_pid; /* Process holding the lock. */
short int l_xxx; /* Reserved for future use. */
};
#ifdef __USE_BSD
/* The structure describing a remote advisory lock. This is the type of the
third arg to `fcntl' for the F_RGETLK, F_RSETLK, and F_RSETLKW requests. */
struct eflock
{
short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
__off_t l_start; /* Offset where the lock begins. */
__off_t l_len; /* Size of the locked area; zero means until EOF. */
short int l_pid; /* Process holding the lock. */
short int l_xxx; /* Reserved for future use. */
long int l_rpid; /* Remote process ID wanting this lock. */
long int l_rsys; /* Remote system ID wanting this lock. */
};
#endif
/* Values for the `l_type' field of a `struct flock'. */
#define F_RDLCK 1 /* Read lock. */
#define F_WRLCK 2 /* Write lock. */
#define F_UNLCK 3 /* Remove lock. */
#endif /* fcntlbits.h */
|
