on query dir I see the EAsize set to the reparse tag as expected (in query dir), but not on FILE_ALL_INFO (query info). So as you indicated, there are only the query dir info levels (not query info ones) which allow returning what we need for reparse point special files - so will have to use fsctl as in smb2_query_symlink. On Thu, Oct 22, 2020 at 6:37 AM Aurélien Aptel <aaptel@xxxxxxxx> wrote: > > Steve French <smfrench@xxxxxxxxx> writes: > > smbfsctl.h:#define IO_REPARSE_TAG_LX_SYMLINK 0xA000001D > > smbfsctl.h:#define IO_REPARSE_TAG_LX_FIFO 0x80000024 > > smbfsctl.h:#define IO_REPARSE_TAG_LX_CHR 0x80000025 > > smbfsctl.h:#define IO_REPARSE_TAG_LX_BLK 0x80000026 > > > > These also make sense for us to use more broadly because it simplifies readdir > > > > but ... my first attempt at querying this using infolevel 33 > > FileReparsePointInformation (see MS-FSCC section 2.4.35) failed ... > > with Windows 10 returning STATUS_NOT_SUPPORTED when querying various > > reparse points (created by WSL indirectly) including fifos, symlinks > > and char devices. > > > > I can switch approaches and try to do the smb3 fsctl to query reparse > > info instead but was hoping that query info would work. Any idea if > > there is another info level that would allow me to query the tag? > > According to [MS-FSCC] if the file has the REPARSE_TAG attribute, the > EaSize field must be interpreted as a reparse tag for these info levels: > > * FileFullDirectoryInfo > * FileBothDirectoryInfo > * FileIdFullDirectoryInfo > * FileIdBothDirectoryInfo > > Otherwise we have code for querying the reparse tag in > smb2_query_symlink(): > > rc = SMB2_ioctl_init(tcon, server, > &rqst[1], fid.persistent_fid, > fid.volatile_fid, FSCTL_GET_REPARSE_POINT, > true /* is_fctl */, NULL, 0, > CIFSMaxBufSize - > MAX_SMB2_CREATE_RESPONSE_SIZE - > MAX_SMB2_CLOSE_RESPONSE_SIZE); > > -- > Aurélien Aptel / SUSE Labs Samba Team > GPG: 1839 CB5F 9F5B FB9B AA97 8C99 03C8 A49B 521B D5D3 > SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg, DE > GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 247165 (AG München) > -- Thanks, Steve
