Re: [PATCH] do_open(): Fix O_DIRECTORY | O_CREAT behavior

[Aleksa Sarai]

On 2023-03-20, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> What about O_PATH? I guess it's fine to create a file and only get a
> path fd to the result?

O_PATH ignores the O_CREAT flag so it's the same as just passing O_PATH.
This is the case for all flags not in O_PATH_FLAGS (so only O_DIRECTORY,
O_NOFOLLOW, O_CLOEXEC have an effect on O_PATH). With openat2, passing
any other flag with O_PATH returns -EINVAL.

-- 
Aleksa Sarai
Senior Software Engineer (Containers)
SUSE Linux GmbH
<https://www.cyphar.com/>

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