On Fri, 2010-07-23 at 07:35 -0700, Alan Coopersmith wrote:
> James C. McPherson wrote:
> > On 23/07/10 07:14 PM, 邓宁 wrote:
> >>
> >> Dear solaris gurus,
> >> I have a stupid question when writing a program under solaris. In the
> >> program, I want to use the system function ddi_fls() and ddi_ffs().
> >> Can you show me how to use the ddi_XXXX() function in my userland code?
> >
> > I did a quick check using cscope on the ON gate, and I cannot
> > find any example of these functions being used in userland.
> > All the usage I find of them is in the kernel ($SRC/uts).
> >
> > When I read through $SRC/uts/common/sys/sunddi.h, I see that
> > those functions are contained within an
> >
> > #ifdef _KERNEL
> >
> > block, so it seems to me that the manpage (and WDD) is incorrect
> > because you cannot use these two functions outside of the kernel.
>
> In userland code, you'd just use the standard ffs() in libc instead.
> I don't know of a userland fls equivalent off hand though.
There isn't one. You'd have to roll your own.
- Garrett
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