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sys,dll: symlink testing

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This commit is contained in:
Bill Zissimopoulos
2016-09-09 21:21:24 -07:00
parent 811696d939
commit 165f3ec45d
9 changed files with 102 additions and 8 deletions
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6
src/dll/fsop.c
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@ -1064,9 +1064,7 @@ FSP_API NTSTATUS FspFileSystemResolveReparsePoints(FSP_FILE_SYSTEM *FileSystem,
union
{
REPARSE_DATA_BUFFER V;
UINT8 B[FIELD_OFFSET(REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
/* assumption: the substitute and print paths fit in the same buffer */
FSP_FSCTL_TRANSACT_PATH_SIZEMAX];
UINT8 B[FSP_FSCTL_TRANSACT_RSP_BUFFER_SIZEMAX];
} ReparseDataBuf;
PREPARSE_DATA_BUFFER ReparseData = &ReparseDataBuf.V;
SIZE_T Size, MaxTries = 32;
@ -1151,7 +1149,7 @@ FSP_API NTSTATUS FspFileSystemResolveReparsePoints(FSP_FILE_SYSTEM *FileSystem,
if (IO_REPARSE_TAG_SYMLINK == ReparseData->ReparseTag)
{
TargetLink = ReparseData->SymbolicLinkReparseBuffer.PathBuffer +
ReparseData->SymbolicLinkReparseBuffer.SubstituteNameOffset;
ReparseData->SymbolicLinkReparseBuffer.SubstituteNameOffset / sizeof(WCHAR);
Size = ReparseData->SymbolicLinkReparseBuffer.SubstituteNameLength;
}
else

1
src/shared/minimal.h
View File

@ -26,6 +26,7 @@
* - "C/C++ > Code Generation > Basic Runtime Checks" must be set to "Default"
* - "C/C++ > Code Generation > Runtime Library" must be set to "Multi-threaded (/MT)".
* - "C/C++ > Code Generation > Security Check" must be disabled (/GS-).
* - "C/C++ > Command Line > Additional Options" add "/Gs16384" to disable __chkstk probes.
* - "Linker > Input > Ignore All Default Libraries" must be "Yes".
*
*

8
src/sys/fsctl.c
View File

@ -118,8 +118,8 @@ static NTSTATUS FspFsvolFileSystemControlReparsePoint(
if (IsWrite)
{
if (0 == InputBuffer || 0 == InputBufferLength ||
FSP_FSCTL_TRANSACT_REQ_SIZEMAX - FIELD_OFFSET(FSP_FSCTL_TRANSACT_REQ, Buffer) -
(FileNode->FileName.Length + sizeof(WCHAR)) < InputBufferLength)
FSP_FSCTL_TRANSACT_REQ_BUFFER_SIZEMAX - (FileNode->FileName.Length + sizeof(WCHAR)) <
InputBufferLength)
return STATUS_INVALID_PARAMETER;
Result = FsRtlValidateReparsePointBuffer(InputBufferLength, InputBuffer);
@ -134,9 +134,9 @@ static NTSTATUS FspFsvolFileSystemControlReparsePoint(
if (FsvolDeviceExtension->VolumeParams.ReparsePointsAccessCheck)
{
if (KernelMode != Irp->RequestorMode &&
SeSinglePrivilegeCheck(RtlConvertLongToLuid(SE_CREATE_SYMBOLIC_LINK_PRIVILEGE),
!SeSinglePrivilegeCheck(RtlConvertLongToLuid(SE_CREATE_SYMBOLIC_LINK_PRIVILEGE),
UserMode))
return STATUS_ACCESS_DENIED;
return STATUS_PRIVILEGE_NOT_HELD;
}
/* determine if target resides on same device as link (convenience for user mode) */