-
-#ifndef HAVE_TRUNCATE
-int truncate(const char *path, off_t length)
-{
- int fd, ret, saverrno;
-
- fd = open(path, O_WRONLY);
- if (fd < 0)
- return (-1);
-
- ret = ftruncate(fd, length);
- saverrno = errno;
- close(fd);
- if (ret == -1)
- errno = saverrno;
-
- return(ret);
-}
-#endif /* HAVE_TRUNCATE */
-
-#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
-int
-tcsendbreak(int fd, int duration)
-{
-# if defined(TIOCSBRK) && defined(TIOCCBRK)
- struct timeval sleepytime;
-
- sleepytime.tv_sec = 0;
- sleepytime.tv_usec = 400000;
- if (ioctl(fd, TIOCSBRK, 0) == -1)
- return (-1);
- (void)select(0, 0, 0, 0, &sleepytime);
- if (ioctl(fd, TIOCCBRK, 0) == -1)
- return (-1);
- return (0);
-# else
- return -1;
-# endif
-}
-#endif /* HAVE_TCSENDBREAK */
-
-mysig_t
-mysignal(int sig, mysig_t act)
-{
-#ifdef HAVE_SIGACTION
- struct sigaction sa, osa;
-
- if (sigaction(sig, NULL, &osa) == -1)
- return (mysig_t) -1;
- if (osa.sa_handler != act) {
- memset(&sa, 0, sizeof(sa));
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = 0;
-#ifdef SA_INTERRUPT
- if (sig == SIGALRM)
- sa.sa_flags |= SA_INTERRUPT;
-#endif
- sa.sa_handler = act;
- if (sigaction(sig, &sa, NULL) == -1)
- return (mysig_t) -1;
- }
- return (osa.sa_handler);
-#else
- #undef signal
- return (signal(sig, act));
-#endif
-}
-
-#ifndef HAVE_STRDUP
-char *
-strdup(const char *str)
-{
- size_t len;
- char *cp;
-
- len = strlen(str) + 1;
- cp = malloc(len);
- if (cp != NULL)
- return(memcpy(cp, str, len));
- return NULL;
-}
-#endif