]>
Commit | Line | Data |
---|---|---|
28f540f4 | 1 | /* O_*, F_*, FD_* bit values for stub configuration. |
bb8e0116 | 2 | Copyright (C) 1991, 1992, 1997, 2000 Free Software Foundation, Inc. |
0d8733c4 UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
28f540f4 RM |
19 | |
20 | /* These values should be changed as appropriate for your system. */ | |
21 | ||
5107cf1d UD |
22 | #ifndef _FCNTL_H |
23 | #error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." | |
24 | #endif | |
28f540f4 RM |
25 | |
26 | ||
27 | /* File access modes for `open' and `fcntl'. */ | |
28 | #define O_RDONLY 0 /* Open read-only. */ | |
29 | #define O_WRONLY 1 /* Open write-only. */ | |
30 | #define O_RDWR 2 /* Open read/write. */ | |
31 | ||
32 | ||
33 | /* Bits OR'd into the second argument to open. */ | |
34 | #define O_CREAT 0x0200 /* Create file if it doesn't exist. */ | |
35 | #define O_EXCL 0x0800 /* Fail if file already exists. */ | |
36 | #define O_TRUNC 0x0400 /* Truncate file to zero length. */ | |
37 | #define O_NOCTTY 0x0100 /* Don't assign a controlling terminal. */ | |
38 | ||
39 | /* File status flags for `open' and `fcntl'. */ | |
40 | #define O_APPEND 0x0008 /* Writes append to the file. */ | |
41 | #define O_NONBLOCK 0x0004 /* Non-blocking I/O. */ | |
42 | ||
43 | #ifdef __USE_BSD | |
44 | #define O_NDELAY O_NONBLOCK | |
45 | #endif | |
46 | ||
47 | /* Mask for file access modes. This is system-dependent in case | |
48 | some system ever wants to define some other flavor of access. */ | |
49 | #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR) | |
50 | ||
51 | /* Values for the second argument to `fcntl'. */ | |
52 | #define F_DUPFD 0 /* Duplicate file descriptor. */ | |
53 | #define F_GETFD 1 /* Get file descriptor flags. */ | |
54 | #define F_SETFD 2 /* Set file descriptor flags. */ | |
55 | #define F_GETFL 3 /* Get file status flags. */ | |
56 | #define F_SETFL 4 /* Set file status flags. */ | |
57 | #ifdef __USE_BSD | |
58 | #define F_GETOWN 5 /* Get owner (receiver of SIGIO). */ | |
59 | #define F_SETOWN 6 /* Set owner (receiver of SIGIO). */ | |
60 | #endif | |
61 | #define F_GETLK 7 /* Get record locking info. */ | |
62 | #define F_SETLK 8 /* Set record locking info. */ | |
63 | #define F_SETLKW 9 /* Set record locking info, wait. */ | |
64 | ||
65 | /* File descriptor flags used with F_GETFD and F_SETFD. */ | |
66 | #define FD_CLOEXEC 1 /* Close on exec. */ | |
67 | ||
68 | ||
5107cf1d | 69 | #include <bits/types.h> |
28f540f4 RM |
70 | |
71 | /* The structure describing an advisory lock. This is the type of the third | |
72 | argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests. */ | |
73 | struct flock | |
74 | { | |
75 | short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ | |
76 | short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ | |
77 | __off_t l_start; /* Offset where the lock begins. */ | |
78 | __off_t l_len; /* Size of the locked area; zero means until EOF. */ | |
79 | __pid_t l_pid; /* Process holding the lock. */ | |
80 | }; | |
81 | ||
82 | /* Values for the `l_type' field of a `struct flock'. */ | |
83 | #define F_RDLCK 1 /* Read lock. */ | |
84 | #define F_WRLCK 2 /* Write lock. */ | |
85 | #define F_UNLCK 3 /* Remove lock. */ | |
bb8e0116 UD |
86 | |
87 | /* Advise to `posix_fadvise'. */ | |
88 | #ifdef __USE_XOPEN2K | |
89 | # define POSIX_FADV_NORMAL 0 /* No further special treatment. */ | |
90 | # define POSIX_FADV_RANDOM 1 /* Expect random page references. */ | |
91 | # define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */ | |
92 | # define POSIX_FADV_WILLNEED 3 /* Will need these pages. */ | |
93 | # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ | |
94 | # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ | |
95 | #endif |