[Xen-devel] Re: [RFC PATCH 33/35] Add the Xenbus sysfs and virtual device hotplug driver.

[Alexey Dobriyan <adobriyan@xxxxxxxxx>]

> +/* Simplified asprintf. */
> +char *kasprintf(const char *fmt, ...)
> +{
> +     va_list ap;
> +     unsigned int len;
> +     char *p, dummy[1];
> +
> +     va_start(ap, fmt);
> +     /* FIXME: vsnprintf has a bug, NULL should work */
> +     len = vsnprintf(dummy, 0, fmt, ap);
> +     va_end(ap);
> +
> +     p = kmalloc(len + 1, GFP_KERNEL);
> +     if (!p)
> +             return NULL;
> +     va_start(ap, fmt);
> +     vsprintf(p, fmt, ap);
> +     va_end(ap);
> +     return p;
> +}

This should go to lib/


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