Cannot write to a file if the owner doesn't have the read permission

[declan94]

The owner cannot write to a file if he doesn't have the read permission, even if he has the write permission.

For example, if the file's mode is --w-rw-rw-, the owner cannot write to the file

[rfjakob]

That is correct, gocryptfs always needs read permissions due to read-modify-write. I'll see if can work around this by chmod'ing the file for an instant.

[rfjakob]

Should be fixed by 3062de6 - does it work for you?

[declan94]

I'm sorry, but it seems not work.

[rfjakob]

What is you gocryptfs -version output? You should get v1.4-24-g3062de6 and with that version it seems to work here, see below:

$ gocryptfs -version
gocryptfs v1.4-24-g3062de6; go-fuse v20170619; 2017-07-13 go1.8.3
$ echo xxx > foo
$ chmod 0200 foo
$ ls -l
total 4
--w-------. 1 jakob jakob 4 13. Jul 22:47 foo
$ echo xxx >> foo
$ echo xxx > foo

[declan94]

Oh, I'm sorry my version is: gocryptfs v1.4-21-gb6bda01; go-fuse v20170619; 2017-07-12 go1.8.3
After update to the latest version, it works! Thank you.

[rfjakob]

Thanks for testing!