int capng_have_capability(capng_type_t which, unsigned int capability);
capng_have_capability will check the specified internal capabilities set to see if the specified capability is set. The capabilities sets must be previously setup with calls to capng_get_caps_process, capng_get_caps_fd, or in some other way setup. The values for which should be one of: CAPNG_EFFECTIVE, CAPNG_PERMITTED, CAPNG_INHERITABLE, or CAPNG_BOUNDING_SET.
This funtion will return 1 if yes and 0 otherwise.
capng_get_caps_process(3), capng_get_caps_fd(3), capng_have_capabilities(3), capabilities(7)