Messages in this thread | | | Date | Tue, 10 May 2005 07:30:46 +0200 (CEST) | From | Geert Uytterhoeven <> | Subject | Re: Adding a system call to kernel |
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On Mon, 9 May 2005, jensen galan wrote: > I am trying to add a system call to a 2.4 kernel. > It's a simple system call which merely prints the > value of xtime. The kernel recompiles OK, and my > user-space program (p5_a.c) actually works using the > added system call when I use syscall() and do not > generate a stub. (The 2 versions of my user-space > programs are included below). However, when I try to > generate a stub in my user-space program using > _syscall2(), I receive the following compilation > error: > > # gcc -Wall -D__KERNEL__ -I > /lib/modules/2.4.28-gentoo-r5/build/include -o p5_b > p5_b.c > /tmp/cc5nBrjZ.o(.text+0x23): In function > 'pedagogictime': > : undefined reference to 'errno' > collect2: ld returned 1 exit status
Please include <errno.h>
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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