Frank,
i think u partly answered my question ... BUT i dont think i can create a thread of a userland process
from kernelmode (correct me if i am wrong )... what i want to do here is create a userland thread from
kernel mode that just executes a userland function supplied by the parent process & exits ... i know this
can be done in user land easily but if i want to do in kernel what all i need to hack.
rgds
tikare
----- Original Message -----
From: "Frank Schaefer" <frank.schafer@setuza.cz>
To: < kernelnewbies@nl.linux.org>
Sent: Wednesday, March 27, 2002 3:28 AM
Subject: Re: userland shared events & callbacks
> Hi,
>
> I don't know what Javier wrote ( he probably replied direct to You ) and
> it's still not absolutely clear to me, what You try to do, bu not at
> all:
>
> I'd sugest You to use a semaphore for the kernel <--> userspace
> communication. The kernel space could set the semaphore you wait in
> userspace for.
> If the semaphore gets set, create your thread ( in userland ).
> If you want to create a process in kernel space ...
> ... I think ( after a very quick RTFM ) clone is the syscall most near
> to your intent; sys_clone from kernel space of course.
>
> For a better picture, read some SysV IPC docs, man 2 clone, man 2
> sem{ctl,get,op} and the kernel source of course ;o).
>
> Hope this meets your post, and happy hacking
> Frank
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
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>
>
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