[asterisk-dev] channel number on DAHDI channel ioctl-s

[Tzafrir Cohen]

On Sat, Feb 14, 2009 at 12:57:52PM -0600, Kevin P. Fleming wrote:
> Tzafrir Cohen wrote:
> 
> > In that case the ioctl code should default to using 'unit' (the number
> > of the channel) and only use the number from userspace if unit is not
> > set (which means the ioctl was called on /dev/dahdi/ctl). Right?
> 
> Well, unit will be set even for /dev/dahdi/ctl, it will just be 255 or
> one of those high numbers (too lazy to look at the code right now). But
> yes, it would only accept the unit number from userspace if the current
> unit number is for /dev/dahdi/ctl.

dahdi_ctl_ioctl calls dahdi_common_ioctl (if at all) with unit=0

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               Tzafrir Cohen
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