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sys,dll: reparse point testing

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This commit is contained in:
Bill Zissimopoulos
2016-09-10 23:00:55 -07:00
parent 0d25e73364
commit af2cc10c15
8 changed files with 171 additions and 112 deletions
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19
src/dll/fuse/fuse_intf.c
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@ -2005,27 +2005,20 @@ static NTSTATUS fsp_fuse_intf_SetReparsePoint(FSP_FILE_SYSTEM *FileSystem,
ReparseTargetPathLength = ReparseData->SymbolicLinkReparseBuffer.SubstituteNameLength;
/* is this an absolute path? */
if (ReparseTargetPathLength > 4 * sizeof(WCHAR) &&
'\\' == ReparseTargetPath[0] &&
'?' == ReparseTargetPath[1] &&
'?' == ReparseTargetPath[2] &&
'\\' == ReparseTargetPath[3])
if (ReparseTargetPathLength >= sizeof(WCHAR) && L'\\' == ReparseTargetPath[0])
{
/* we do not support absolute paths that point outside this file system */
if (!Request->Req.FileSystemControl.TargetOnFileSystem)
if (0 == Request->Req.FileSystemControl.TargetOnFileSystem)
return STATUS_ACCESS_DENIED;
}
/* the first path component is assumed to be the device name; skip it! */
ReparseTargetPath += 4;
ReparseTargetPathLength -= 4 * sizeof(WCHAR);
while (0 < ReparseTargetPathLength && L'\\' != *ReparseTargetPath)
ReparseTargetPathLength--, ReparseTargetPath++;
ReparseTargetPath += Request->Req.FileSystemControl.TargetOnFileSystem / sizeof(WCHAR);
ReparseTargetPathLength -= Request->Req.FileSystemControl.TargetOnFileSystem;
}
}
else
{
ReparseTargetPath = (PVOID)(ReparseData->GenericReparseBuffer.DataBuffer + 8);
ReparseTargetPathLength = ReparseData->ReparseDataLength - sizeof(UINT64);
ReparseTargetPathLength = ReparseData->ReparseDataLength - 8;
}
memcpy(TargetPath, ReparseTargetPath, ReparseTargetPathLength);