Linux major/minor conversion not entirely correct

[Ed Schouten]

* John E Hein <jhein at timing.com> wrote:
> Ed Schouten wrote at 09:31 +0200 on Jun  2, 2008:
>  > +		/*
>  > +		 * Linux checks major and minors of the slave device
>  > +		 * to make sure it's a pty device, so let's make him
>  > +		 * believe it is.
>  > +		 */
>  > +		devno = strtoul(node + strlen("pts/"), NULL, 10);
>  > +		*major = 136 + (devno / 256);
>  > +		*minor = devno % 256;
>  > +		return 0;
> 
> Where does the magic number 136 come from?

Linux uses major numbers 136,137,138,... for PTY's.

-- 
 Ed Schouten <ed at 80386.nl>
 WWW: http://80386.nl/
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