Initial revision

CVS patchset: 4644
CVS date: 2001/03/21 18:33:35

1 files changed, 106 insertions, 0 deletions

diff --git a/db/os/os_oflags.c b/db/os/os_oflags.c
new file mode 100644
index 000000000..fd413bdac
--- /dev/null
+++ b/db/os/os_oflags.c
@@ -0,0 +1,106 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997, 1998, 1999, 2000
+ *	Sleepycat Software.  All rights reserved.
+ */
+
+#include "db_config.h"
+
+#ifndef lint
+static const char revid[] = "$Id: os_oflags.c,v 11.6 2000/10/27 20:32:02 dda Exp $";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <fcntl.h>
+#endif
+
+#include "db_int.h"
+
+/*
+ * __db_oflags --
+ *	Convert open(2) flags to DB flags.
+ *
+ * PUBLIC: u_int32_t __db_oflags __P((int));
+ */
+u_int32_t
+__db_oflags(oflags)
+	int oflags;
+{
+	u_int32_t dbflags;
+
+	dbflags = 0;
+
+	if (oflags & O_CREAT)
+		dbflags |= DB_CREATE;
+
+	if (oflags & O_TRUNC)
+		dbflags |= DB_TRUNCATE;
+
+	/*
+	 * !!!
+	 * Convert POSIX 1003.1 open(2) mode flags to DB flags.  This isn't
+	 * an exact science as few POSIX implementations have a flag value
+	 * for O_RDONLY, it's simply the lack of a write flag.
+	 */
+#ifndef	O_ACCMODE
+#define	O_ACCMODE	(O_RDONLY | O_RDWR | O_WRONLY)
+#endif
+	switch (oflags & O_ACCMODE) {
+	case O_RDWR:
+	case O_WRONLY:
+		break;
+	default:
+		dbflags |= DB_RDONLY;
+		break;
+	}
+	return (dbflags);
+}
+
+/*
+ * __db_omode --
+ *	Convert a permission string to the correct open(2) flags.
+ *
+ * PUBLIC: int __db_omode __P((const char *));
+ */
+int
+__db_omode(perm)
+	const char *perm;
+{
+	int mode;
+
+#ifndef	S_IRUSR
+#ifdef DB_WIN32
+#define	S_IRUSR	S_IREAD		/* R for owner */
+#define	S_IWUSR	S_IWRITE	/* W for owner */
+#define	S_IRGRP	0		/* R for group */
+#define	S_IWGRP	0		/* W for group */
+#define	S_IROTH	0		/* R for other */
+#define	S_IWOTH	0		/* W for other */
+#else
+#define	S_IRUSR	0000400		/* R for owner */
+#define	S_IWUSR	0000200		/* W for owner */
+#define	S_IRGRP	0000040		/* R for group */
+#define	S_IWGRP	0000020		/* W for group */
+#define	S_IROTH	0000004		/* R for other */
+#define	S_IWOTH	0000002		/* W for other */
+#endif /* DB_WIN32 */
+#endif
+	mode = 0;
+	if (perm[0] == 'r')
+		mode |= S_IRUSR;
+	if (perm[1] == 'w')
+		mode |= S_IWUSR;
+	if (perm[2] == 'r')
+		mode |= S_IRGRP;
+	if (perm[3] == 'w')
+		mode |= S_IWGRP;
+	if (perm[4] == 'r')
+		mode |= S_IROTH;
+	if (perm[5] == 'w')
+		mode |= S_IWOTH;
+	return (mode);
+}