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/*-
* 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_rename.c,v 1.2 2000/06/13 19:52:19 dda Exp $";
#endif /* not lint */
#include "db_int.h"
#include "os_jump.h"
/*
* __os_rename --
* Rename a file.
*/
int
__os_rename(dbenv, old, new)
DB_ENV *dbenv;
const char *old, *new;
{
int ret;
ret = 0;
if (__db_jump.j_rename != NULL) {
if (__db_jump.j_rename(old, new) == -1)
ret = __os_get_errno();
}
else {
/* Normally we would use a single MoveFileEx call with
* MOVEFILE_REPLACE_EXISTING flag to simulate Unix rename().
* But if the target file exists, and the two files' 8.3
* names are identical, a Windows bug causes the target file
* to be deleted, but the original file will not be renamed,
* and an ENOENT error will be returned. (See MSDN for a
* description of the bug).
*
* After the failed call, a MoveFile seems to perform
* the rename correctly (even another call to MoveFileEx
* does not)! The expense of this extra call only occurs
* on systems with the bug: Windows/98, for one, but
* apparently not Windows/NT and Windows/2000.
*/
if (MoveFileEx(old, new, MOVEFILE_REPLACE_EXISTING) != TRUE)
ret = __os_win32_errno();
if (ret == ENOENT && MoveFile(old, new) == TRUE)
ret = 0;
}
if (ret != 0)
__db_err(dbenv, "Rename %s %s: %s", old, new, strerror(ret));
return (ret);
}
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