+#if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP)
+int nanosleep(const struct timespec *req, struct timespec *rem)
+{
+ int rc, saverrno;
+ extern int errno;
+ struct timeval tstart, tstop, tremain, time2wait;
+
+ TIMESPEC_TO_TIMEVAL(&time2wait, req)
+ (void) gettimeofday(&tstart, NULL);
+ rc = select(0, NULL, NULL, NULL, &time2wait);
+ if (rc == -1) {
+ saverrno = errno;
+ (void) gettimeofday (&tstop, NULL);
+ errno = saverrno;
+ tremain.tv_sec = time2wait.tv_sec -
+ (tstop.tv_sec - tstart.tv_sec);
+ tremain.tv_usec = time2wait.tv_usec -
+ (tstop.tv_usec - tstart.tv_usec);
+ tremain.tv_sec += tremain.tv_usec / 1000000L;
+ tremain.tv_usec %= 1000000L;
+ } else {
+ tremain.tv_sec = 0;
+ tremain.tv_usec = 0;
+ }
+ TIMEVAL_TO_TIMESPEC(&tremain, rem)
+
+ return(rc);
+}
+#endif
+
+#ifndef HAVE_TCGETPGRP
+pid_t
+tcgetpgrp(int fd)
+{
+ int ctty_pgrp;
+
+ if (ioctl(fd, TIOCGPGRP, &ctty_pgrp) == -1)
+ return(-1);
+ else
+ return(ctty_pgrp);
+}
+#endif /* HAVE_TCGETPGRP */
+
+#ifndef HAVE_TCSENDBREAK