| #include <stdarg.h> | |
| #include <errno.h> | |
| #include <sys/ioctl.h> | |
| #undef ioctl | |
| /* Perform the I/O control operation specified by REQUEST on FD. | |
| The actual type and use of ARG and the return value depend on REQUEST. */ | |
| int | |
| ioctl (int fd, int request, ...) | |
| { | |
| void *arg; | |
| va_list ap; | |
| int result; | |
| va_start (ap, request); | |
| arg = va_arg (ap, void *); | |
| switch (request) | |
| { | |
| default: | |
| _set_errno (ENOSYS); | |
| result = -1; | |
| break; | |
| } | |
| va_end (ap); | |
| return result; | |
| } |