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36 .Nd query presence of a kernel feature
42 .Fn feature_present "const char *feature"
46 function provides a method for an application to determine if a specific
47 kernel feature is present in the currently running kernel.
50 argument specifies the name of the feature to check.
53 function will return 1 if the specified feature is present,
54 otherwise it will return 0.
57 function is not able to determine the presence of
59 due to an internal error it will return 0.
63 is present then 1 is returned;
64 otherwise 0 is returned.
71 function first appeared in