Re: Is Documentation/ioctl-numbers.txt still accurate?

Michael Elizabeth Chastain (mec@shout.net)
Fri, 7 Aug 1998 00:00:13 -0500


Hi Steve,

No, it's not up-to-date. Most people don't send in entries. It takes
time to scan the kernel sources and I haven't done it in a while.

You can grep for '_IO' in include/*/*.h and that will pick up most of
them. The major advantage of having unique numbers is so that strace
will print the right value, so it's essential to use the _IO macros
and helpful to not conflict with other driver's ioctls. Note that
the actual routing of ioctls is not done by number so there isn't
a problem there.

Regards,

Michael Chastain
<mailto:mec@shout.net>
"love without fear"

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