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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2009 Oracle. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_exists --
* Return if the file exists.
*/
int
__os_exists(env, path, isdirp)
ENV *env;
const char *path;
int *isdirp;
{
DB_ENV *dbenv;
DWORD attrs;
_TCHAR *tpath;
int ret;
dbenv = env == NULL ? NULL : env->dbenv;
TO_TSTRING(env, path, tpath, ret);
if (ret != 0)
return (ret);
if (dbenv != NULL &&
FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
__db_msg(env, "fileops: stat %s", path);
RETRY_CHK(
((attrs = GetFileAttributes(tpath)) == (DWORD)-1 ? 1 : 0), ret);
if (ret == 0) {
if (isdirp != NULL)
*isdirp = (attrs & FILE_ATTRIBUTE_DIRECTORY);
} else
ret = __os_posix_err(ret);
FREE_STRING(env, tpath);
return (ret);
}
/*
* __os_ioinfo --
* Return file size and I/O size; abstracted to make it easier
* to replace.
*/
int
__os_ioinfo(env, path, fhp, mbytesp, bytesp, iosizep)
ENV *env;
const char *path;
DB_FH *fhp;
u_int32_t *mbytesp, *bytesp, *iosizep;
{
int ret;
BY_HANDLE_FILE_INFORMATION bhfi;
unsigned __int64 filesize;
RETRY_CHK((!GetFileInformationByHandle(fhp->handle, &bhfi)), ret);
if (ret != 0) {
__db_syserr(env, ret, "GetFileInformationByHandle");
return (__os_posix_err(ret));
}
filesize = ((unsigned __int64)bhfi.nFileSizeHigh << 32) +
bhfi.nFileSizeLow;
/* Return the size of the file. */
if (mbytesp != NULL)
*mbytesp = (u_int32_t)(filesize / MEGABYTE);
if (bytesp != NULL)
*bytesp = (u_int32_t)(filesize % MEGABYTE);
/*
* The filesystem I/O size is not easily available. In particular,
* the values returned by GetDiskFreeSpace() are not very helpful
* (NTFS volumes often report 512B clusters, which are too small to
* be a useful default).
*/
if (iosizep != NULL)
*iosizep = DB_DEF_IOSIZE;
return (0);
}
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