1 files changed, 24 insertions, 0 deletions
diff --git a/db2/include/os.h b/db2/include/os.h
new file mode 100644
index 0000000000..f173d1f610
--- /dev/null
+++ b/db2/include/os.h
@@ -0,0 +1,24 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997, 1998
+ *	Sleepycat Software.  All rights reserved.
+ *
+ *	@(#)os.h	10.11 (Sleepycat) 10/12/98
+ */
+
+/*
+ * We group seek/write calls into a single function so that we can use
+ * pread(2)/pwrite(2) where they're available.
+ */
+#define	DB_IO_READ	1
+#define	DB_IO_WRITE	2
+typedef struct __io {
+	int	    fd_io;		/* I/O file descriptor. */
+	int	    fd_lock;		/* Locking file descriptor. */
+	db_mutex_t *mutexp;		/* Mutex to lock. */
+	size_t	    pagesize;		/* Page size. */
+	db_pgno_t   pgno;		/* Page number. */
+	u_int8_t   *buf;		/* Buffer. */
+	size_t	    bytes;		/* Bytes read/written. */
+} DB_IO;