Re: [PATCH] [man-pages] adjtimex.2: document clock_adjtime

On Tue, Nov 21, 2017 at 4:05 AM, Richard Cochran
[off-list ref] wrote:

On Mon, Nov 20, 2017 at 11:53:02PM +0100, Arnd Bergmann wrote:

quoted

 .B EINVAL
+The
+.I clk_id
+specified is not supported on this system.

We return EINVAL when the clockid is not valid.  That can mean two
things.  Either the SYS-V style hard coded positive clockid is out of
range, or the dynamic negative clockid does not refer to a valid
instance of a clock object.

Dynamic clocks might also return ENODEV in case a hot-plugable device
(like USB) has disappeared after its character device was opened.

I copied that line from clock_gettime() man page. I suppose we want to
fix change this in both pages, right? Any suggestions for a good way to
express your explanation in the man page? I suppose we don't want to
go into details of the implementation there but still capture the possible
corner cases.

       Arnd