git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 | 1 | /* O_*, F_*, FD_* bit values for stub configuration. |
| 0d8733c4 UD |
2 | Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc. |
| 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. */ |