Re: Signals in linux 2.4.18

[Seth Arnold <sarnold@wirex.com>]

On Thu, Oct 03, 2002 at 12:30:46PM +0530, Anjaneyulu wrote:
[anj, your emails would be easier to read if you wrapped your line at 72
characters]

> I would like to know how to pass some information to the user process
> when I am raising a signal from kernel space.

Have your signal handler in your user process set a flag, informing your
user process's main loop to read a /proc/ file, sysctl, ioctl, character
device, etc, when it next has a chance.

Traditional unix signals cannot send more than just their number to a
process. POSIX Realtime signals can send more data, but I am not clear
the level of POSIX realtime signal support in the linux kernel.
(O'Reilly has a very nice book on realtime programming, released perhaps
1994..)

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