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mount: docs: add section about windows filesystem permissions

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albertony 2020-12-08 00:20:31 +01:00 committed by Nick Craig-Wood
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cmd/mountlib/mount.go
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@ -297,6 +297,33 @@ must be with just a single backslash prefix in this case.
See also [Limitations](#limitations) section below. See also [Limitations](#limitations) section below.
#### Windows filesystem permissions
The FUSE emulation layer on Windows must convert between the POSIX-based
permission model used in FUSE, and the permission model used in Windows,
based on access-control lists (ACL).
The mounted filesystem will normally get three entries in its access-control list (ACL),
representing permissions for the POSIX permission scopes: Owner, group and others.
By default, the owner and group will be taken from the current user, and the built-in
group "Everyone" will be used to represent others. The user/group can be customized
with FUSE options "UserName" and "GroupName",
e.g. ` + "`-o UserName=user123 -o GroupName=\"Authenticated Users\"`" + `.
The permissions on each entry will be set according to
[options](#options) ` + "`--dir-perms`" + ` and ` + "`--file-perms`" + `,
which takes a value in traditional [numeric notation](https://en.wikipedia.org/wiki/File-system_permissions#Numeric_notation),
where the default corresponds to ` + "`--file-perms 0666 --dir-perms 0777`" + `.
Note that the mapping of permissions is not always trivial, and the result
you see in Windows Explorer may not be exactly like you expected.
For example, when setting a value that includes write access, this will be
mapped to individual permissions "write attributes", "write data" and "append data",
but not "write extended attributes" (WinFsp does not support extended attributes,
see [this](https://github.com/billziss-gh/winfsp/wiki/NTFS-Compatibility)).
Windows will then show this as basic permission "Special" instead of "Write",
because "Write" includes the "write extended attributes" permission.
#### Windows caveats #### Windows caveats
Note that drives created as Administrator are not visible by other Note that drives created as Administrator are not visible by other
@ -382,7 +409,7 @@ after the mountpoint has been successfully set up.
Units having the rclone ` + commandName + ` service specified as a requirement Units having the rclone ` + commandName + ` service specified as a requirement
will see all files and folders immediately in this mode. will see all files and folders immediately in this mode.
### chunked reading ### ### chunked reading
` + "`--vfs-read-chunk-size`" + ` will enable reading the source objects in parts. ` + "`--vfs-read-chunk-size`" + ` will enable reading the source objects in parts.
This can reduce the used download quota for some remotes by requesting only chunks This can reduce the used download quota for some remotes by requesting only chunks