cvs commit: src/sys/sys sysctl.h
jhb at freebsd.org
Mon Dec 31 13:38:45 PST 2007
On Monday 31 December 2007 04:12:05 pm John Baldwin wrote:
> jhb 2007-12-31 21:12:05 UTC
> FreeBSD src repository
> Modified files:
> sys/sys sysctl.h
> Add very basic support for the kernel to export a list of features. Each
> feature is represented by a node in the new 'kern.features' sysctl node.
> A feature is present if the corresponding node is present and evaluates to
> A FEATURE() wrapper macro is added which takes the sysctl node name and
> a description of the feature as the sole arguments and creates a read-only
> sysctl node with a value of 1.
> Discussed on: arch
Note that this is only the kernel side. I'm not sure what the userland
interface will look like. It may be that each feature gains a new sysconf(3)
constant rather than adding a new 'feature_present(const char *)' function.
Also, I went ahead and put this into sys/sysctl.h rather than a new header
because it was only 2 lines of code.
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