FAT32 support (was: [RFC] Handle process token groups in server/file.c::sd_to_mode)
klightspeed at netspace.net.au
Thu Nov 19 13:58:46 CST 2009
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Paul Chitescu wrote:
> How should server/file.c sd_to_mode() deal with filesystems that don't support
> full POSIX ownership and access permissions? It is quite popular to mount FAT
> filesystems - either from a removable media or a partition shared with a
> Windows installation.
To support this, I think the following would need to be done:
* Possibly split out and extended the filesystem type autodetection code
in dlls/ntdll/file.c::get_device_info() to autodetect the filesystem's
ability to hold ACLs
* Implement NtQueryVolumeInformationFile(FileFsAttributeInformation)
- this has flags such as:
* FILE_PERSISTENT_ACLS: Persistent ACLs (NTFS vs FAT32),
* FILE_CASE_SENSITIVE_SEARCH: case-sensitive search (POSIX)
- this also has the name of the filesystem (e.g. NTFS, FAT32).
* Implement the honouring of FILE_PERSISTENT_ACLS in
* Possibly add a filesystem type configuration option to winecfg
(separate to media type).
* Possibly honour the media and filesystem type settings as configured
> Furthermore, there could be symlinks to such files so filesystem capability
> should be detected somehow from the file itself.
Volume Mount Point support
* Possibly extend dosdevices to include devices for Volume Mount Points.
* Possibly implement detection of symbolic links leading to mount points
as volume mount points - i.e. create \Device entries for mount points,
and redirect Volume Mount Point targets to those devices.
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