On Tue, 12 Jun 2007 15:54:57 +0200 Federico Paparoni wrote:
> Hi all,
> i'm trying to create a simple system call in a kernel 2.4 distribution.
> I read guide/articles like this
>
> http://irfanhabib.wordpress.com/2006/10/01/adding-a-system-call-linux-24x/
>
> All the articles say the same things, but the implementation of my new
> system call doesn't work.
> I create a new entry in arch/i386/kernel/entry.S
> I create a new entry in include/asm/unistd.h
> I create a new function with the asmlinkage prefix in a source file
> already defined (in ipc/sem.c for example)
>
> When i create my user program, it doesn't work. Firstly when i try to
> compile i receive a problem like this
>
> : undefined reference to 'errno'
>
> Then I include errno.h (also if i don't understand this step) and the
> compilation works, but the syscall neverworks, because the call always
> return -1.
>
> Any help?
> Any tutorial FOR DUMMY MAN that someone already used?
You can try this one. It used to work, but I haven't updated or
tested it lately.
http://www.xenotime.net/linux/syscall_ex/
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
