On 8/15/15 1:39 AM, John Baldwin wrote:
On Friday, August 14, 2015 10:46:10 PM Julian Elischer wrote:
I would like to implement this call. but would like input as to it's
nature.
The code inside the system would already appear to support handling
three elements, though it needs some scrutiny,
so all that is needed is a system call with the ability to set the
birthtime directly.
Whether it should take the form of the existing calls but expecting
three items is up for discussion.
Maybe teh addition of a flags argument to specify which items are
present and which to set.
ideas?
I believe these should be new calls. Only utimensat() provides a flag
argument, but it is reserved for AT_* flags.
I wasn't suggesting we keep the old ones and silently make them take 3
args :-)
I was thining of suplementing them wth new syscalls and the obvious
names are those you suggested.
however I do wonder if there will ever be a need for a 4th...
I would be fine with
something like futimens3() and utimensat3() (where 3 means "three
timespecs"). Jilles implemented futimens() and utimensat(), so he
might have ideas as well. I would probably stick the birth time in
the third (final) timespec slot to make it easier to update new code
(you can use an #ifdef just around ts[2] without having to #ifdef the
entire block).
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