On Wed, Jul 22, 2009 at 8:40 PM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote:
Hi...
I hope you don't mind if I cc my reply to kernelnewbies mailing list
too...so that you can get more response..
On Wed, Jul 22, 2009 at 4:03 PM, krushnaal pai<krisonearth@xxxxxxxxx> wrote:
> sir,
> how can we send data from kernel space to user application.......
AFAIK, most people use netlink socket. But since it seems that you
want alternative ways....
> also i had an article on that but they have used sockets ,i want one that
> doesnt use sockets
if you mean "send data" as "user space read data from kernel space by
polling certain file descriptor", then you can create /proc or /sys or
debugfs entries, assign the file operation in it. Then when a user
space program read the entry, kernel simply send the data to the
reader.
If you are just looking for alternatives, ioctl is the simplest one. Google for configfs, thats a good one too.
--
regards,
Mulyadi Santosa
Freelance Linux trainer
blog: the-hydra.blogspot.com
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