50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/* Copyright (C) 1991 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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#ifndef _SYS_FILE_H
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#define _SYS_FILE_H 1
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#include <features.h>
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#include <fcntl.h>
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/* Alternate names for values for the WHENCE argument to `lseek'. */
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#define L_SET __L_SET /* Seek from beginning of file. */
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#define L_INCR __L_INCR/* Seek from current position. */
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#define L_XTND __L_XTND/* Seek from end of file. */
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/* Operations for the `flock' call. */
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#define LOCK_SH __LOCK_SH /* Shared lock. */
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#define LOCK_EX __LOCK_EX /* Exclusive lock. */
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#define LOCK_UN __LOCK_UN /* Unlock. */
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/* Can be OR'd in to one of the above. */
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#define LOCK_NB __LOCK_NB /* Don't block when locking. */
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/* Apply or remove an advisory lock, according to OPERATION,
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on the file FD refers to. */
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extern int EXFUN(__flock, (int __fd, int __operation));
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/* It just so happens that <fcntl.h> does #define flock __flock. Bletch. */
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#endif /* sys/file.h */
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