glibc/db2/os/os_oflags.c

49 lines
943 B
C

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)os_oflags.c 10.2 (Sleepycat) 10/24/97";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <fcntl.h>
#endif
#include "db_int.h"
/*
* __db_oflags --
* Convert open(2) flags to DB flags.
*
* PUBLIC: int __db_oflags __P((int));
*/
int
__db_oflags(oflags)
int oflags;
{
int dbflags;
/*
* XXX
* Convert POSIX 1003.1 open(2) flags to DB flags. Not an exact
* science as most POSIX implementations don't have a flag value
* for O_RDONLY, it's simply the lack of a write flag.
*/
dbflags = 0;
if (oflags & O_CREAT)
dbflags |= DB_CREATE;
if (!(oflags & (O_RDWR | O_WRONLY)) || oflags & O_RDONLY)
dbflags |= DB_RDONLY;
if (oflags & O_TRUNC)
dbflags |= DB_TRUNCATE;
return (dbflags);
}