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sys: FileNode: properly maintain Security/SecurityChangeNumber fields

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This commit is contained in:
Bill Zissimopoulos 2016-02-19 16:13:57 -08:00
parent e77a8b0262
commit 9e057b4ea1
2 changed files with 7 additions and 1 deletions
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6
src/sys/file.c
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@ -105,8 +105,13 @@ VOID FspFileNodeDelete(FSP_FILE_NODE *FileNode)
{ {
PAGED_CODE(); PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =
FspFsvolDeviceExtension(FileNode->FsvolDeviceObject);
FsRtlTeardownPerStreamContexts(&FileNode->Header); FsRtlTeardownPerStreamContexts(&FileNode->Header);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->SecurityCache, FileNode->Security);
FspDeviceDereference(FileNode->FsvolDeviceObject); FspDeviceDereference(FileNode->FsvolDeviceObject);
if (0 != FileNode->ExternalFileName) if (0 != FileNode->ExternalFileName)
@ -499,6 +504,7 @@ VOID FspFileNodeSetSecurity(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size)
FspMetaCacheInvalidateItem(FsvolDeviceExtension->SecurityCache, FileNode->Security); FspMetaCacheInvalidateItem(FsvolDeviceExtension->SecurityCache, FileNode->Security);
FileNode->Security = 0 != Buffer ? FileNode->Security = 0 != Buffer ?
FspMetaCacheAddItem(FsvolDeviceExtension->SecurityCache, Buffer, Size) : 0; FspMetaCacheAddItem(FsvolDeviceExtension->SecurityCache, Buffer, Size) : 0;
FileNode->SecurityChangeNumber++;
} }
BOOLEAN FspFileNodeTrySetSecurity(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size, BOOLEAN FspFileNodeTrySetSecurity(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size,

2
src/sys/security.c
View File

@ -292,7 +292,7 @@ NTSTATUS FspFsvolSetSecurityComplete(
/* if the security descriptor that we got back is valid */ /* if the security descriptor that we got back is valid */
if (0 < Response->Rsp.SetSecurity.SecurityDescriptor.Size && if (0 < Response->Rsp.SetSecurity.SecurityDescriptor.Size &&
Response->Buffer + Response->Rsp.SetSecurity.SecurityDescriptor.Size <= Response->Buffer + Response->Rsp.SetSecurity.SecurityDescriptor.Size <=
(PUINT8)Response + Response->Size && (PUINT8)Response + Response->Size &&
RtlValidRelativeSecurityDescriptor((PVOID)Response->Buffer, RtlValidRelativeSecurityDescriptor((PVOID)Response->Buffer,
Response->Rsp.SetSecurity.SecurityDescriptor.Size, 0)) Response->Rsp.SetSecurity.SecurityDescriptor.Size, 0))
{ {