1 files changed, 81 insertions, 0 deletions
diff --git a/src/systems.h b/src/systems.h
new file mode 100644
index 0000000..3ebfe21
--- /dev/null
+++ b/src/systems.h
@@ -0,0 +1,81 @@
+/* systems.h - Most of the system dependant code and defines are here. */
+
+/* This file is part of GDBM, the GNU data base manager.
+   Copyright (C) 1990, 1991, 1993, 2007, 2011, 2013 Free Software Foundation,
+   Inc.
+
+   GDBM is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GDBM 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GDBM. If not, see <http://www.gnu.org/licenses/>.    */
+
+/* Include all system headers first. */
+#include <sys/types.h>
+#include <stdio.h>
+#if HAVE_SYS_FILE_H
+# include <sys/file.h>
+#endif
+#include <sys/stat.h>
+#include <stdlib.h>
+#if HAVE_STRING_H
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#ifndef SEEK_SET
+# define SEEK_SET        0
+#endif
+
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+#endif
+
+/* Default block size.  Some systems do not have blocksize in their
+   stat record. This code uses the BSD blocksize from stat. */
+
+#if HAVE_STRUCT_STAT_ST_BLKSIZE
+# define STATBLKSIZE file_stat.st_blksize
+#else
+# define STATBLKSIZE 1024
+#endif
+
+/* Do we have ftruncate? */
+#if HAVE_FTRUNCATE
+# define TRUNCATE(dbf) ftruncate (dbf->desc, 0)
+#else
+# define TRUNCATE(dbf) close( open (dbf->name, O_RDWR|O_TRUNC, mode));
+#endif
+
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+/* I/O macros. */
+#if HAVE_MMAP
+# define __read(_dbf, _buf, _size)	_gdbm_mapped_read(_dbf, _buf, _size)
+# define __write(_dbf, _buf, _size)	_gdbm_mapped_write(_dbf, _buf, _size)
+# define __lseek(_dbf, _off, _whn)	_gdbm_mapped_lseek(_dbf, _off, _whn)
+# define __fsync(_dbf)			_gdbm_mapped_sync(_dbf)
+#else
+# define __read(_dbf, _buf, _size)	read(_dbf->desc, _buf, _size)
+# define __write(_dbf, _buf, _size)	write(_dbf->desc, _buf, _size)
+# define __lseek(_dbf, _off, _whn)	lseek(_dbf->desc, _off, _whn)
+# if HAVE_FSYNC
+#  define __fsync(_dbf)			fsync(_dbf->desc)
+# else
+#  define __fsync(_dbf)			{ sync(); sync(); }
+# endif
+#endif
+