FEATURE_PRESENT(3) |
FreeBSD Library Functions Manual |
FEATURE_PRESENT(3) |
NAME
feature_present —
query presence of a kernel feature
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include < unistd.h>
int
feature_present( const char *feature);
DESCRIPTION
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.
RETURN VALUES
If
feature is present then 1 is returned; otherwise 0 is returned.
HISTORY
The
feature_present() function first appeared in
FreeBSD 8.0.