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[bpt/guile.git] / lib / sys_file.in.h
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1/* Provide a more complete sys/file.h.
2
5e69ceb7 3 Copyright (C) 2007-2014 Free Software Foundation, Inc.
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4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program 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
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License
005de2e8 16 along with this program; if not, see <http://www.gnu.org/licenses/>. */
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17
18/* Written by Richard W.M. Jones. */
a927b6c1 19
3d458a81 20#ifndef _@GUARD_PREFIX@_SYS_FILE_H
f240aacb 21
a927b6c1 22#if __GNUC__ >= 3
f240aacb 23@PRAGMA_SYSTEM_HEADER@
a927b6c1 24#endif
0f00f2c3 25@PRAGMA_COLUMNS@
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26
27/* The include_next requires a split double-inclusion guard. */
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28#if @HAVE_SYS_FILE_H@
29# @INCLUDE_NEXT@ @NEXT_SYS_FILE_H@
30#endif
f240aacb 31
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32#ifndef _@GUARD_PREFIX@_SYS_FILE_H
33#define _@GUARD_PREFIX@_SYS_FILE_H
f240aacb 34
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35#ifndef LOCK_SH
36/* Operations for the 'flock' call (same as Linux kernel constants). */
37# define LOCK_SH 1 /* Shared lock. */
38# define LOCK_EX 2 /* Exclusive lock. */
39# define LOCK_UN 8 /* Unlock. */
40
41/* Can be OR'd in to one of the above. */
42# define LOCK_NB 4 /* Don't block when locking. */
43#endif
44
45/* The definition of _GL_WARN_ON_USE is copied here. */
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46
47#if @GNULIB_FLOCK@
48/* Apply or remove advisory locks on an open file.
49 Return 0 if successful, otherwise -1 and errno set. */
50# if !@HAVE_FLOCK@
51extern int flock (int fd, int operation);
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52# endif
53#elif defined GNULIB_POSIXCHECK
54# undef flock
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55# if HAVE_RAW_DECL_FLOCK
56_GL_WARN_ON_USE (flock, "flock is unportable - "
57 "use gnulib module flock for portability");
58# endif
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59#endif
60
61
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62#endif /* _@GUARD_PREFIX@_SYS_FILE_H */
63#endif /* _@GUARD_PREFIX@_SYS_FILE_H */