Re: RFC: More functions allowed with O_PATH

[Christoph Hellwig]

On Tue, Jan 27, 2015 at 12:58:55PM +0000, P??draig Brady wrote:
> Since fsync(), fdatasync(), syncfs() work on an identifying descriptor,
> and all work against a read-only file for example,
> should any/all these functions work with a descriptor opened with O_PATH ?

fsync and fdatasync work on the file data, so they defintively
shouldn't.

syncfs might make sense as we just use it as a handle for the containing
filesystem.

Adding fchmod and fchown would be more useful as they are allowed by
Posix on O_EXEC and O_SEARCH fds.
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