int explain_ioctl_or_die(int fildes, int request, void *data);
DESCRIPTION
The explain_ioctl_or_die function
is used to call the ioctl(2) system
call. On failure an explanation will be
printed to stderr,
obtained from explain_ioctl(3),
and then the process terminates
by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion
similar to the following example:
int result = explain_ioctl_or_die(fildes, request, data);
fildes
The fildes, exactly as to be passed to the ioctl(2) system call.
request
The request, exactly as to be passed to the ioctl(2) system call.
data
The data, exactly as to be passed to the ioctl(2) system call.
Returns:
This function only returns on success, see ioctl(2) for more
information. On failure, prints an explanation and exit()s.