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- /* O_*, F_*, FD_* bit values for SVR4 and Irix 4.
- Copyright (C) 1991, 1992 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., 675 Mass Ave,
- Cambridge, MA 02139, 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 0x0100 /* Create file if it doesn't exist. */
- #define O_EXCL 0x0400 /* Fail if file already exists. */
- #define O_TRUNC 0x0200 /* Truncate file to zero length. */
- #define O_NOCTTY 0x0800 /* Don't assign a controlling terminal. */
- #ifdef __USE_MISC
- #define O_ASYNC 0x0040 /* Send SIGIO to owner when data is ready. */
- #define O_FSYNC 0x0010 /* 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 0x0080 /* Non-blocking I/O. */
-
- #ifdef __USE_MISC
- #define O_NDELAY 0x0004
- #endif
-
- #ifdef __USE_MISC
- /* 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 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 23 /* Get owner (receiver of SIGIO). */
- #define F_SETOWN 24 /* Set owner (receiver of SIGIO). */
- #endif
- #define F_GETLK 14 /* Get record locking info. */
- #define F_SETLK 6 /* Set record locking info (non-blocking). */
- #define F_SETLKW 7 /* Set record locking info (blocking). */
- #ifdef __USE_SVID
- #define F_RGETLK 20 /* Get remote record locking info. */
- #define F_RSETLK 21 /* Set remote locking info (non-blocking). */
- #define F_RSETLKW 22 /* 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. */
- long int l_sysid; /* System ID where locking process resides. */
- __pid_t l_pid; /* Process holding the lock. */
- long int pad[4]; /* Reserved for future use. */
- };
-
- /* 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 */
-