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Command: feature_present | Section: 3 | Source: FreeBSD | File: feature_present.3.gz
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.
SEE ALSO
sysconf(3), sysctl(3)
HISTORY
The feature_present() function first appeared in FreeBSD 8.0.
FreeBSD 14.1-RELEASE-p8 January 8, 2008 FreeBSD 14.1-RELEASE-p8