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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>
- #include <unistd.h>
- #include <linea.h> /* for TIOCGWINSZ under TOS */
- #include <support.h>
- #include <stat.h>
- #include "lib.h" /* for __open_stat */
-
- 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 = (struct sgttyb *) arg;
- int null_fd;
- long baud;
-
- if (istty) {
- switch (cmd) {
- case TIOCGETD:
- *((int *)arg) = _ttydisc;
- return 0;
- break;
- case TIOCSETD:
- _ttydisc = *((int *)arg);
- return 0;
- break;
- case TIOCLGET:
- *((int *)arg) = _ldisc;
- return 0;
- break;
- case TIOCLSET:
- _ldisc = *((int *)arg);
- return 0;
- break;
- case TIOCSWINSZ:
- if (__mint < 9)
- return 0;
- break;
- case TIOCGWINSZ:
- if (__mint < 9) {
- struct winsize *win = (struct winsize *)arg;
- #ifndef __SOZOBON__
- (void)linea0();
- #else /* __SOZOBON__ */
- linea0();
- #endif /* __SOZOBON__ */
- 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;
- }
- break;
- #ifdef __MINT__
- case TIOCNOTTY:
- if (__mint) {
- if ((fd < 0) || !(_isctty(fd))) {
- errno = EBADF;
- return -1;
- }
- (void) Fclose(fd);
- null_fd = (int) Fopen(__mint < 9 ? "V:\\null"
- : "U:\\dev\\null", O_RDWR);
- (void) Fforce(-1, null_fd);
- __open_stat[__OPEN_INDEX(-1)].status =
- FH_UNKNOWN;
- __open_stat[__OPEN_INDEX(fd)].status =
- FH_UNKNOWN;
- if (null_fd != fd) {
- (void) Fforce(fd, null_fd);
- (void) Fclose(null_fd);
- }
- return 0;
- }
- break;
- #endif /* __MINT__ */
- default:
- break;
- }
- }
-
- if (__mint) {
- switch (cmd) {
- case TIOCCDTR:
- baud = 0;
- r = Fcntl(fd, &baud, TIOCOBAUD);
- if (r < 0) {
- errno = (int) -r;
- return -1;
- }
- return 0;
- break;
- case TIOCSDTR:
- baud = -1;
- r = Fcntl(fd, &baud, TIOCOBAUD);
- if (r < 0) {
- errno = (int) -r;
- return -1;
- }
- r = Fcntl(fd, &baud, TIOCOBAUD);
- if (r < 0) {
- errno = (int) -r;
- return -1;
- }
- return 0;
- break;
- case TIOCMGET:
- if (__mint >= 0x10a) {
- char g;
- long ssp;
- short *mfp;
- short m;
- struct stat sb;
- long *msig;
-
- msig = (long *) arg;
- r = Fcntl(fd, (long)&sb, FSTAT);
- if (r < 0) {
- errno = -r;
- return -1;
- }
- if (((sb.st_mode & S_IFMT) == S_IFCHR) && (sb.st_rdev == 257))
- {
- *msig = TIOCM_DSR;
- g = Giaccess(0, 14);
- *msig |= ((g & (1 << 3)) ? 0 : TIOCM_RTS);
- *msig |= ((g & (1 << 4)) ? 0 : TIOCM_DTR);
- mfp = ((short *) 0xfffffa00L);
- ssp = Super(0L);
- m = *mfp & 0xff;
- Super(ssp);
- *msig |= ((m & (1 << 1)) ? 0 : TIOCM_CAR);
- *msig |= ((m & (1 << 2)) ? 0 : TIOCM_CTS);
- *msig |= ((m & (1 << 6)) ? 0 : TIOCM_RNG);
- return 0;
- }
- errno = EINVAL;
- return -1;
- break;
- }
- default:
- r = Fcntl(fd, arg, cmd);
- break;
- }
- }
- 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 = (int) -r;
- return -1;
- }
- return (int) r;
- }
-