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(fhandler_base::utimes_fs): Fix white space. (fhandler_disk_file::lock): Remove 9x blurb from comment. (fhandler_disk_file::mkdir): Use NtCreateFile/NtClose instead of CreateDirectoryA. (fhandler_disk_file::rmdir): Accommodate changes to unlink_nt. Simplify post-delete SMB-related tests. Use NtQueryAttributesFile instead of GetFileAttributes. * ntdll.h (STATUS_DIRECTORY_NOT_EMPTY): Define. (NtQueryAttributesFile): Declare. * syscalls.cc (unlink_nt): Return NTSTATUS. Drop setattrs parameter. Never use FILE_DELETE_ON_CLOSE, always use NtSetInformationFile(FileDispositionInformation) instead. Check for R/O attributes and open file with FILE_WRITE_ATTRIBUTES access if any of them are set. Remove R/O attributes before marking for delete if necessary. Revert them afterwards if necessary. (unlink): Accommodate changes to unlink_nt.
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