* Szabolcs Nagy: > (note: in musl these ioctl macros are in sys/ioctl.h > which is not a posix header so namespace rules are > less strict than for sys/socket.h and users tend to > include it for ioctl()) <sys/ioctl.h> can be confusing because some of the constants may depend on types that aren't declared by including the header. This makes their macros unusable. Defining ioctl constants in headers which also provide the matching types avoids that problem at least, also it can introduce namespace issues. Thanks, Florian