permissions: differentiate between "folder" and "file" write permissions

[mewalig]

This is similar to #3211. I would like to designate certain folders such that:

• user can move a file into the folder
• user cannot create a subfolder in the folder

It seems to me that a simple change to enable this would be add an option to handle subfolder creation. For backwards-compatibility, a falsy value would not change the current behavior, and a non-falsy value would prevent subdirectory writes (or possibly provide further granularity).

As an example, if readonly_subdir is the new option, then commands/mkdir.js would be changed such that for any x, references to x.write become (x.write && !x.readonly_subdir).

Can we create a pull request and get this change made?

[nao-pon]

@mewalig The connector can tell the client the options for that folder with the Options key for each folder.

You can disable the UI-side mkdir command in a particular folder by returning $stat['options']['disabled'] = ['mkdir', ...].

[mewalig]

Will try it out, thank you