1 files changed, 126 insertions, 0 deletions
diff --git a/bdb/os_win32/os_handle.c b/bdb/os_win32/os_handle.c
new file mode 100644
index 00000000000..7db9c3da977
--- /dev/null
+++ b/bdb/os_win32/os_handle.c
@@ -0,0 +1,126 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1998-2002
+ *	Sleepycat Software.  All rights reserved.
+ */
+
+#include "db_config.h"
+
+#ifndef lint
+static const char revid[] = "$Id: os_handle.c,v 11.30 2002/07/12 18:56:54 bostic Exp $";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#endif
+
+#include "db_int.h"
+
+/*
+ * __os_openhandle --
+ *	Open a file, using POSIX 1003.1 open flags.
+ *
+ * PUBLIC: int __os_openhandle __P((DB_ENV *, const char *, int, int, DB_FH *));
+ */
+int
+__os_openhandle(dbenv, name, flags, mode, fhp)
+	DB_ENV *dbenv;
+	const char *name;
+	int flags, mode;
+	DB_FH *fhp;
+{
+	int ret, nrepeat;
+
+	memset(fhp, 0, sizeof(*fhp));
+	fhp->handle = INVALID_HANDLE_VALUE;
+
+	/* If the application specified an interface, use it. */
+	if (DB_GLOBAL(j_open) != NULL) {
+		if ((fhp->fd = DB_GLOBAL(j_open)(name, flags, mode)) == -1)
+			return (__os_get_errno());
+		F_SET(fhp, DB_FH_VALID);
+		return (0);
+	}
+
+	for (nrepeat = 1; nrepeat < 4; ++nrepeat) {
+		ret = 0;
+		fhp->fd = open(name, flags, mode);
+
+		if (fhp->fd == -1) {
+			/*
+			 * If it's a "temporary" error, we retry up to 3 times,
+			 * waiting up to 12 seconds.  While it's not a problem
+			 * if we can't open a database, an inability to open a
+			 * log file is cause for serious dismay.
+			 */
+			ret = __os_get_errno();
+			if (ret == ENFILE || ret == EMFILE || ret == ENOSPC) {
+				(void)__os_sleep(dbenv, nrepeat * 2, 0);
+				continue;
+			}
+
+			/*
+			 * If it was an EINTR it's reasonable to retry
+			 * immediately, and arbitrarily often.
+			 */
+			if (ret == EINTR) {
+				--nrepeat;
+				continue;
+			}
+		} else {
+			F_SET(fhp, DB_FH_VALID);
+		}
+		break;
+	}
+
+	return (ret);
+}
+
+/*
+ * __os_closehandle --
+ *	Close a file.
+ *
+ * PUBLIC: int __os_closehandle __P((DB_ENV *, DB_FH *));
+ */
+int
+__os_closehandle(dbenv, fhp)
+	DB_ENV *dbenv;
+	DB_FH *fhp;
+{
+	BOOL success;
+	int ret;
+
+	COMPQUIET(dbenv, NULL);
+	/* Don't close file descriptors that were never opened. */
+	DB_ASSERT(F_ISSET(fhp, DB_FH_VALID) &&
+	    ((fhp->fd != -1) || (fhp->handle != INVALID_HANDLE_VALUE)));
+
+	ret = 0;
+
+	do {
+		if (DB_GLOBAL(j_close) != NULL)
+			success = (DB_GLOBAL(j_close)(fhp->fd) == 0);
+		else if (fhp->handle != INVALID_HANDLE_VALUE) {
+			success = CloseHandle(fhp->handle);
+			if (!success)
+				__os_set_errno(__os_win32_errno());
+		}
+		else
+			success = (close(fhp->fd) == 0);
+	} while (!success && (ret = __os_get_errno()) == EINTR);
+
+	/*
+	 * Smash the POSIX file descriptor -- it's never tested, but we want
+	 * to catch any mistakes.
+	 */
+	fhp->fd = -1;
+	fhp->handle = INVALID_HANDLE_VALUE;
+	F_CLR(fhp, DB_FH_VALID);
+
+	return (ret);
+}