1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2004
* Sleepycat Software. All rights reserved.
*
* $Id: os_stat.c,v 11.32 2004/10/07 14:00:11 carol Exp $
*/
#include "db_config.h"
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#endif
#include "db_int.h"
/*
* __os_exists --
* Return if the file exists.
*/
int
__os_exists(path, isdirp)
const char *path;
int *isdirp;
{
int ret;
DWORD attrs;
_TCHAR *tpath;
if (DB_GLOBAL(j_exists) != NULL)
return (DB_GLOBAL(j_exists)(path, isdirp));
TO_TSTRING(NULL, path, tpath, ret);
if (ret != 0)
return (ret);
RETRY_CHK(
((attrs = GetFileAttributes(tpath)) == (DWORD)-1 ? 1 : 0), ret);
if (ret == 0 && isdirp != NULL)
*isdirp = (attrs & FILE_ATTRIBUTE_DIRECTORY);
FREE_STRING(NULL, tpath);
return (ret);
}
/*
* __os_ioinfo --
* Return file size and I/O size; abstracted to make it easier
* to replace.
*/
int
__os_ioinfo(dbenv, path, fhp, mbytesp, bytesp, iosizep)
DB_ENV *dbenv;
const char *path;
DB_FH *fhp;
u_int32_t *mbytesp, *bytesp, *iosizep;
{
int ret;
BY_HANDLE_FILE_INFORMATION bhfi;
unsigned __int64 filesize;
if (DB_GLOBAL(j_ioinfo) != NULL)
return (DB_GLOBAL(j_ioinfo)(path,
fhp->fd, mbytesp, bytesp, iosizep));
RETRY_CHK((!GetFileInformationByHandle(fhp->handle, &bhfi)), ret);
if (ret != 0) {
__db_err(dbenv,
"GetFileInformationByHandle: %s", strerror(ret));
return (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 blocksize 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);
}
|
