| /* O_*, F_*, FD_* bit values for stub configuration. |
| 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. */ |
| |
| /* These values should be changed as appropriate for your system. */ |
| |
| #ifndef _FCNTL_H |
| #error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." |
| #endif |
| |
| |
| /* 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 0x0100 /* Don't assign a controlling terminal. */ |
| |
| /* File status flags for `open' and `fcntl'. */ |
| #define O_APPEND 0x0008 /* Writes append to the file. */ |
| #define O_NONBLOCK 0x0004 /* Non-blocking I/O. */ |
| |
| #ifdef __USE_BSD |
| #define O_NDELAY O_NONBLOCK |
| #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. */ |
| #define F_SETLKW 9 /* Set record locking info, wait. */ |
| |
| /* File descriptor flags used with F_GETFD and F_SETFD. */ |
| #define FD_CLOEXEC 1 /* Close on exec. */ |
| |
| |
| #include <bits/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. */ |
| __pid_t l_pid; /* Process holding the lock. */ |
| }; |
| |
| /* 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. */ |