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Re: some pmf improvements
On Sun, Feb 10, 2008 at 07:44:18AM -0800, John Nemeth wrote:
> On Jul 2, 10:08am, David Young wrote:
> } Also, I put a process to sleep if it calls pmf_device_resume(, PMF_F_SELF)
> } on a device that was suspended by the system/operator. In this way,
> } I stop programs such as wpa_supplicant(8) from interfering with device
> } suspension by modifying IFF_UP.
> Why not just return an error instead of putting the process to
Because that raises more questions than it answers? :-)
1) Shall we actually set IFF_UP, or cancel the operation?
2) Which error code? ENXIO? EINPROGRESS?
3) How will applications handle the error code? Spin? Quit?
4) Will we audit and modify 3rd-party apps in base to handle the
error code? What about pkgsrc apps?
I don't think that most applications are prepared for an ioctl that
ordinarily powers-up a device to do any different, and we may as well
put those applications to sleep.
David Young OJC Technologies
dyoung%ojctech.com@localhost Urbana, IL * (217) 278-3933 ext 24
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