63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* These values should be changed as appropriate for your system. */
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#ifndef _GNU_FILE_H
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#define _GNU_FILE_H 1
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/* File access modes for open and fcntl. */
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#define __O_RDONLY 0 /* Open read-only. */
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#define __O_WRONLY 1 /* Open write-only. */
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#define __O_RDWR 2 /* Open read/write. */
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/* Bits OR'd into the second argument to open. */
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#define __O_CREAT 001000 /* Create file if it doesn't exist. */
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#define __O_EXCL 004000 /* Fail if file already exists. */
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#define __O_TRUNC 002000 /* Truncate file to zero length. */
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#define __O_NOCTTY 000040 /* Don't assign a controlling terminal. */
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/* File status flags for `open' and `fcntl'. */
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#define __O_APPEND 000010 /* Writes append to the file. */
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#define __O_NONBLOCK 000004 /* Non-blocking I/O. */
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/* BSD before 4.4 doesn't support POSIX.1 O_NONBLOCK,
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but O_NDELAY is close. */
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#define __O_NDELAY __O_NONBLOCK
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/* Mask for file access modes. */
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#define __O_ACCMODE (__O_RDONLY|__O_WRONLY|__O_RDWR)
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/* Alternate names for values for the WHENCE argument to `lseek'. */
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#define __L_SET 0 /* Seek from beginning of file. */
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#define __L_INCR 1 /* Seek from current position. */
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#define __L_XTND 2 /* Seek from end of file. */
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/* Operations for the `flock' call. */
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#define __LOCK_SH 1 /* Shared lock. */
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#define __LOCK_EX 2 /* Exclusive lock. */
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#define __LOCK_UN 8 /* Unlock. */
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/* Can be OR'd in to one of the above. */
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#define __LOCK_NB 4 /* Don't block when locking. */
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#endif /* gnu/file.h */
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