POSIX_TRACE_CLOSE (man3p)
posix_trace_close, posix_trace_open, posix_trace_rewind — trace log management (TRACING)
posix_trace_close, posix_trace_open, posix_trace_rewind — trace log management (TRACING)
stpncpy, strncpy — copy fixed length string, returning a pointer to the array end
fileno — map a stream pointer to a file descriptor
pthread_detach — detach a thread
posix_typed_mem_open — open a typed memory object (ADVANCED REALTIME)
fchown — change owner and group of a file
pclose — close a pipe stream to or from a process
pthread_attr_getguardsize, pthread_attr_setguardsize — get and set the thread guardsize attribute
getwchar — get a wide character from a stdin stream
scanf — convert formatted input