Manual Pages  — FEATURE_PRESENT

feature_present – query presence of a kernel feature

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES SEE ALSO HISTORY

Standard C Library (libc, -lc)

#include <unistd.h>

int
feature_present(const char *feature);

The feature_present() function provides a method for an application to determine if a specific kernel feature is present in the currently running kernel. The feature argument specifies the name of the feature to check. The feature_present() function will return 1 if the specified feature is present, otherwise it will return 0. If the feature_present() function is not able to determine the presence of feature due to an internal error it will return 0.

If feature is present then 1 is returned; otherwise 0 is returned.

The feature_present() function first appeared in FreeBSD 8.0 .