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-rw-r--r--db2/os/os_open.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/db2/os/os_open.c b/db2/os/os_open.c
new file mode 100644
index 0000000000..05784e4810
--- /dev/null
+++ b/db2/os/os_open.c
@@ -0,0 +1,105 @@
+/*-
+ * 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_open.c 10.19 (Sleepycat) 10/28/97";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#endif
+
+#include "db_int.h"
+
+/*
+ * __db_open --
+ * Open a file descriptor.
+ *
+ * PUBLIC: int __db_open __P((const char *, int, int, int, int *));
+ */
+int
+__db_open(name, arg_flags, ok_flags, mode, fdp)
+ const char *name;
+ int arg_flags, ok_flags, mode, *fdp;
+{
+ int fd, flags;
+
+ if (arg_flags & ~ok_flags)
+ return (EINVAL);
+
+ flags = 0;
+ if (arg_flags & DB_CREATE)
+ flags |= O_CREAT;
+
+ if (arg_flags & DB_EXCL)
+ flags |= O_EXCL;
+
+ if (arg_flags & DB_RDONLY)
+ flags |= O_RDONLY;
+ else
+ flags |= O_RDWR;
+
+#ifdef _WIN32
+#ifdef _MSC_VER
+ if (arg_flags & DB_SEQUENTIAL)
+ flags |= _O_SEQUENTIAL;
+ else
+ flags |= _O_RANDOM;
+
+ if (arg_flags & DB_TEMPORARY)
+ flags |= _O_TEMPORARY;
+#endif
+ flags |= O_BINARY | O_NOINHERIT;
+#endif
+
+ if (arg_flags & DB_TRUNCATE)
+ flags |= O_TRUNC;
+
+ /* Open the file. */
+ if ((fd = __os_open(name, flags, mode)) == -1)
+ return (errno);
+
+#ifndef _WIN32
+ /* Delete any temporary file; done for Win32 by _O_TEMPORARY. */
+ if (arg_flags & DB_TEMPORARY)
+ (void)__os_unlink(name);
+#endif
+
+#if !defined(_WIN32) && !defined(macintosh)
+ /*
+ * Deny access to any child process; done for Win32 by O_NOINHERIT,
+ * MacOS has neither child processes nor fd inheritance.
+ */
+ if (fcntl(fd, F_SETFD, 1) == -1) {
+ int ret = errno;
+
+ (void)__os_close(fd);
+ return (ret);
+ }
+#endif
+ *fdp = fd;
+ return (0);
+}
+
+/*
+ * __db_close --
+ * Close a file descriptor.
+ *
+ * PUBLIC: int __db_close __P((int));
+ */
+int
+__db_close(fd)
+ int fd;
+{
+ return (__os_close(fd) ? errno : 0);
+}