Messages in this thread |  | | Subject | Re: Patch?: linux-2.5.59/sound/soundcore.c referenced non-existant errno variable | From | Raja R Harinath <> | Date | Fri, 17 Jan 2003 20:49:36 -0600 |
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Hi,
"Adam J. Richter" <adam@yggdrasil.com> writes:
> linux-2.5.59/sound/sound_firmware.c attempts to use the > user level system call interface from the kernel, which I understand > works on i386 and perhaps all architectures, but requires a variable > named "errno."
Which is provided in-kernel (not for modules) by 'lib/errno.c'.
> (Actually, it mixed things like close() and sys_close(), but that's > beside the point.)
Those are provided by <linux/unistd.h>, with __KERNEL_SYSCALLS__ defined.
> I could just declare a "static int errno;" in the file,
That was originally there, but removed in 2.5.57 IIRC. <linux/unistd.h> has 'extern int errno;' -- so 'static int errno;' would be a bug.
- Hari -- Raja R Harinath ------------------------------ harinath@cs.umn.edu - 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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