This matches what is outlined here:
http://msdn.microsoft.com/en-us/library/ms804363.aspx
This is also inline with how winXP/win7 handle this. See
RAW-SFILEINFO-END-OF-FILE* in smbtorture4.
req, /* req */
0, /* root_dir_fid */
smb_fname_tmp, /* fname */
- FILE_WRITE_ATTRIBUTES, /* access_mask */
+ FILE_WRITE_DATA, /* access_mask */
(FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
FILE_SHARE_DELETE),
FILE_OPEN, /* create_disposition*/