Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-08-06 03:14:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merged the main code from NtQueryAttributesFile and NtQueryFullAttributesFile to IopQueryAttributesFile.

Browse source 
Check the access to parameters in IopQueryAttributesFile if we are called from user mode because calling Zw functions from kernel mode will bypass all checks.

svn path=/trunk/; revision=18028
This commit is contained in:
Hartmut Birr 2005-09-24 18:04:13 +00:00
parent ffb2fee46a
commit e6a04cca76
1 changed files with 98 additions and 39 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

137
reactos/ntoskrnl/io/file.c
View file

@ -2155,21 +2155,84 @@ NtOpenFile(PHANDLE FileHandle,
}
NTSTATUS
STDCALL
NtQueryAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes,
OUT PFILE_BASIC_INFORMATION FileInformation)
IopQueryAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes,
IN FILE_INFORMATION_CLASS FileInformationClass,
OUT PVOID FileInformation)
{
IO_STATUS_BLOCK IoStatusBlock;
HANDLE FileHandle;
NTSTATUS Status;
KPROCESSOR_MODE AccessMode;
UNICODE_STRING ObjectName;
OBJECT_CREATE_INFORMATION ObjectCreateInfo;
OBJECT_ATTRIBUTES LocalObjectAttributes;
ULONG BufferSize;
union
{
FILE_BASIC_INFORMATION BasicInformation;
FILE_NETWORK_OPEN_INFORMATION NetworkOpenInformation;
}LocalFileInformation;
if (FileInformationClass == FileBasicInformation)
{
BufferSize = sizeof(FILE_BASIC_INFORMATION);
}
else if (FileInformationClass == FileNetworkOpenInformation)
{
BufferSize = sizeof(FILE_NETWORK_OPEN_INFORMATION);
}
else
{
return STATUS_INVALID_PARAMETER;
}
AccessMode = ExGetPreviousMode();
if (AccessMode != KernelMode)
{
Status = STATUS_SUCCESS;
_SEH_TRY
{
ProbeForWrite(FileInformation,
BufferSize,
sizeof(ULONG));
}
_SEH_HANDLE
{
Status = _SEH_GetExceptionCode();
}
_SEH_END;
if (NT_SUCCESS(Status))
{
Status = ObpCaptureObjectAttributes(ObjectAttributes,
AccessMode,
NULL,
&ObjectCreateInfo,
&ObjectName);
}
if (!NT_SUCCESS(Status))
{
return Status;
}
InitializeObjectAttributes(&LocalObjectAttributes,
&ObjectName,
ObjectCreateInfo.Attributes,
ObjectCreateInfo.RootDirectory,
ObjectCreateInfo.SecurityDescriptor);
}
/* Open the file */
Status = ZwOpenFile(&FileHandle,
SYNCHRONIZE | FILE_READ_ATTRIBUTES,
ObjectAttributes,
AccessMode == KernelMode ? ObjectAttributes : &LocalObjectAttributes,
&IoStatusBlock,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
0,
FILE_SYNCHRONOUS_IO_NONALERT);
if (AccessMode != KernelMode)
{
ObpReleaseCapturedAttributes(&ObjectCreateInfo);
ExFreePool(ObjectName.Buffer);
}
if (!NT_SUCCESS (Status))
{
DPRINT ("ZwOpenFile() failed (Status %lx)\n", Status);
@ -2179,18 +2242,41 @@ NtQueryAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes,
/* Get file attributes */
Status = ZwQueryInformationFile(FileHandle,
&IoStatusBlock,
FileInformation,
sizeof(FILE_BASIC_INFORMATION),
FileBasicInformation);
AccessMode == KernelMode ? FileInformation : &LocalFileInformation,
BufferSize,
FileInformationClass);
if (!NT_SUCCESS (Status))
{
DPRINT ("ZwQueryInformationFile() failed (Status %lx)\n", Status);
}
ZwClose(FileHandle);
if (NT_SUCCESS(Status) && AccessMode != KernelMode)
{
_SEH_TRY
{
memcpy(FileInformation, &LocalFileInformation, BufferSize);
}
_SEH_HANDLE
{
Status = _SEH_GetExceptionCode();
}
_SEH_END;
}
return Status;
}
NTSTATUS
STDCALL
NtQueryAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes,
OUT PFILE_BASIC_INFORMATION FileInformation)
{
return IopQueryAttributesFile(ObjectAttributes,
FileBasicInformation,
FileInformation);
}
/*
* @implemented
*
@ -2383,36 +2469,9 @@ STDCALL
NtQueryFullAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes,
OUT PFILE_NETWORK_OPEN_INFORMATION FileInformation)
{
IO_STATUS_BLOCK IoStatusBlock;
HANDLE FileHandle;
NTSTATUS Status;
/* Open the file */
Status = ZwOpenFile(&FileHandle,
SYNCHRONIZE | FILE_READ_ATTRIBUTES,
ObjectAttributes,
&IoStatusBlock,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS (Status))
{
DPRINT ("ZwOpenFile() failed (Status %lx)\n", Status);
return Status;
}
/* Get file attributes */
Status = ZwQueryInformationFile(FileHandle,
&IoStatusBlock,
FileInformation,
sizeof(FILE_NETWORK_OPEN_INFORMATION),
FileNetworkOpenInformation);
if (!NT_SUCCESS (Status))
{
DPRINT ("ZwQueryInformationFile() failed (Status %lx)\n", Status);
}
ZwClose (FileHandle);
return Status;
return IopQueryAttributesFile(ObjectAttributes,
FileNetworkOpenInformation,
FileInformation);
}
/*