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EncFilter调试的问题
在windbg与虚拟机双机调试时总是出现:
kd> g SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SFilter!SfDriverReinitialization: SfLoadRules failed, Status=c0000034 SfDriverReinitialization的函数代码如下: VOID SfDriverReinitialization( IN PDRIVER_OBJECT DriverObject, IN PVOID Context, IN ULONG Count ) { NTSTATUS Status; UNREFERENCED_PARAMETER(Count); Status = SfLoadRules(&gRuleFileHandle); if (!NT_SUCCESS(Status)) { KdPrint(("SFilter!SfDriverReinitialization: SfLoadRules failed, Status=%08x\n", Status)); IoRegisterDriverReinitialization(DriverObject, SfDriverReinitialization, Context); } } SfLoadRules 的函数代码如下: NTSTATUS SfLoadRules( OUT PHANDLE FileHandle ) { UNICODE_STRING FileName; IO_STATUS_BLOCK IoStatus; FILE_STANDARD_INFORMATION StandardInfo; ULONG Length; OBJECT_ATTRIBUTES ObjectAttributes; NTSTATUS Status; PRULE Rule; RtlInitUnicodeString(&FileName, RULE_FILE_NAME); InitializeObjectAttributes(&ObjectAttributes, &FileName, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL ); do { Status = ZwCreateFile(FileHandle, (SYNCHRONIZE | FILE_READ_DATA), &ObjectAttributes, &IoStatus, NULL, FILE_ATTRIBUTE_NORMAL, 0, FILE_OPEN, FILE_SYNCHRONOUS_IO_NONALERT | FILE_NO_INTERMEDIATE_BUFFERING, NULL, 0 ); if (!NT_SUCCESS(Status)) { *FileHandle = NULL; break; } Status = ZwQueryInformationFile(*FileHandle, &IoStatus, &StandardInfo, sizeof(FILE_STANDARD_INFORMATION), FileStandardInformation ); if (!NT_SUCCESS(Status)) { ZwClose(*FileHandle); *FileHandle = NULL; break; } Length = StandardInfo.EndOfFile.LowPart; if (Length % sizeof(RULE) != 4) { Status = STATUS_INVALID_PARAMETER; ZwClose(*FileHandle); *FileHandle = NULL; break; } Rule = (PRULE) ExAllocatePoolWithTag(NonPagedPool, Length - 4 + sizeof(RULE), SFLT_POOL_TAG); if (!Rule) { Status = STATUS_INSUFFICIENT_RESOURCES; ZwClose(*FileHandle); *FileHandle = NULL; break; } Status = ZwReadFile(*FileHandle, NULL, NULL, NULL, &IoStatus, Rule, Length, NULL, NULL ); if ((!NT_SUCCESS(Status)) || (IoStatus.Information != Length)) { ExFreePoolWithTag(Rule, SFLT_POOL_TAG); Rule = NULL; ZwClose(*FileHandle); *FileHandle = NULL; break; } ZwClose(*FileHandle); *FileHandle = NULL; ((PRULE)((PUCHAR) Rule + Length - 4))->Policy = POLICY_END; ExAcquireResourceSharedLite(&gRulesResource, TRUE); if (gRules) ExFreePool(gRules); gRules = Rule; ExReleaseResourceLite(&gRulesResource); } while (FALSE); return Status; } 输出的错误是SfDriverReinitialization函数里的语句,貌似SfLoadRules函数也没什么毛病。。 难道是我符号表的问题吗?但是windbg里Symbol path里的值为SRV*C:\Windows\Symbols*http://msdl.microsoft.com/download/symbols;E:\EncFilter\EncFilter\objchk_win7_x86\i386,也没有错误啊,很是迷惑,大家有解决的方法吗? |
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沙发#
发布于:2011-03-03 17:13
看下你的规则文件,坛子里有篇专门产生规则文件的代码,可以参考下!
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板凳#
发布于:2011-03-04 09:27
回 1楼(wwg266543) 的帖子
貌似我米有规则文件。。。知道是哪里错了,多谢! |
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