when I look at Gdrive, there is also a fuse client to mount Gdrive. I wonder, when modifying a file on Gdrive through this client, is the file "locked" or in any other way set to "in use" to prevent others to modify the "original" on the internet? I haven't found anything about this. Isn't there a locking method with Google docs api?
Stef Bon
There is no such feature, but you can use the ETag of the file's entry to ensure that no one else has changed the file since it was fetched. This is not exactly the same thing, but it can achieve the same effect of ensuring that changes from one place are not overwritten by changes from another place.
Pretty sure they don't have that. You should consider suggesting it in the Google Docs feature request forums.
来源：https://stackoverflow.com/questions/10561691/can-i-set-a-lock-on-files-with-google-api