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author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /misc/sys/file.h | |
download | glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.bz2 |
initial import
Diffstat (limited to 'misc/sys/file.h')
-rw-r--r-- | misc/sys/file.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/misc/sys/file.h b/misc/sys/file.h new file mode 100644 index 0000000..51d07bc --- /dev/null +++ b/misc/sys/file.h @@ -0,0 +1,55 @@ +/* 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, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _SYS_FILE_H + +#define _SYS_FILE_H 1 +#include <features.h> + +#ifndef _FCNTL_H +#include <fcntl.h> +#endif + +__BEGIN_DECLS + + +/* Alternate names for values for the WHENCE argument to `lseek'. + These are the same as SEEK_SET, SEEK_CUR, and SEEK_END, respectively. */ +#define L_SET 0 /* Seek from beginning of file. */ +#define L_INCR 1 /* Seek from current position. */ +#define L_XTND 2 /* Seek from end of file. */ + + +/* Operations for the `flock' call. */ +#define LOCK_SH 1 /* Shared lock. */ +#define LOCK_EX 2 /* Exclusive lock. */ +#define LOCK_UN 8 /* Unlock. */ + +/* Can be OR'd in to one of the above. */ +#define LOCK_NB 4 /* Don't block when locking. */ + + +/* Apply or remove an advisory lock, according to OPERATION, + on the file FD refers to. */ +extern int __flock __P ((int __fd, int __operation)); +extern int flock __P ((int __fd, int __operation)); + + +__END_DECLS + +#endif /* sys/file.h */ |