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- /*
- * ioctl() emulation for MiNT; written by Eric R. Smith and placed
- * in the public domain
- */
-
- #include <errno.h>
- #include <mintbind.h>
- #include <ioctl.h>
- #include <fcntl.h> /* for __open_stat */
- #include <unistd.h>
- #include <linea.h> /* for TIOCGWINSZ under TOS */
-
- extern int __mint; /* MiNT version */
- int _ttydisc = NTTYDISC;
- int _ldisc = LLITOUT;
-
- /* in read.c */
- extern struct tchars __tchars;
- extern struct ltchars __ltchars;
-
- int ioctl(fd, cmd, arg)
- int fd, cmd;
- void *arg;
- {
- long r;
- int istty = isatty(fd);
- struct sgttyb *sg = arg;
-
- if (istty) {
- if (cmd == TIOCGETD) {
- *((int *)arg) = _ttydisc;
- return 0;
- } else if (cmd == TIOCSETD) {
- _ttydisc = *((int *)arg);
- return 0;
- } else if (cmd == TIOCLGET) {
- *((int *)arg) = _ldisc;
- return 0;
- } else if (cmd == TIOCLSET) {
- _ldisc = *((int *)arg);
- return 0;
- } else if (cmd == TIOCSWINSZ && __mint < 9) {
- return 0;
- } else if (cmd == TIOCGWINSZ && __mint < 9) {
- struct winsize *win = (struct winsize *)arg;
-
- (void)linea0();
- win->ws_row = V_CEL_MY + 1;
- win->ws_col = V_CEL_MX + 1;
- win->ws_xpixel = V_X_MAX;
- win->ws_ypixel = V_Y_MAX;
- return 0;
- }
- }
-
- if (__mint) {
- r = Fcntl(fd, arg, cmd);
- }
- else if (istty) {
- r = 0;
- switch(cmd) {
- case TIOCSETP:
- fd = __OPEN_INDEX(fd);
- if (fd < 0 || fd >= __NHANDLES)
- fd = __NHANDLES - 1;
- __open_stat[fd].flags = sg->sg_flags;
- break;
- case TIOCGETP:
- fd = __OPEN_INDEX(fd);
- if (fd < 0 || fd >= __NHANDLES)
- fd = __NHANDLES - 1;
- sg->sg_flags = __open_stat[fd].flags;
- sg->sg_ispeed = sg->sg_ospeed = 0;
- sg->sg_erase = 'H' & 0x1f;
- sg->sg_kill = 'U' & 0x1f;
- break;
- case TIOCGETC:
- *((struct tchars *)arg) = __tchars;
- break;
- case TIOCSETC:
- __tchars = *((struct tchars *)arg);
- break;
- case TIOCGLTC:
- *((struct ltchars *)arg) = __ltchars;
- break;
- case TIOCSLTC:
- __ltchars = *((struct ltchars *)arg);
- break;
- case TIOCGPGRP:
- *((long *)arg) = 0;
- break;
- case TIOCSPGRP:
- break;
- default:
- r = -EINVAL;
- }
- }
- else
- r = -EINVAL;
-
- if (r < 0) {
- errno = -r;
- return -1;
- }
- return r;
- }
-