#ifndef HAVE_WAITPID
pid_t waitpid(pid_t pid, int *statptr, int options)
{
+#ifdef HAVE_WAIT4
return wait4(pid, statptr, options, NULL);
+#else
+ /* If wait4 is also not available, try wait3 for SVR3 variants */
+ /* Less ideal because can't actually request a specific pid */
+ /* At least the WNOHANG option is supported */
+ /* Code borrowed from apache fragment written by dwd@bell-labs.com */
+ int tmp_pid, dummystat;;
+ if (kill(pid, 0) == -1) {
+ errno = ECHILD;
+ return -1;
+ }
+ if (statptr == NULL)
+ statptr = &dummystat;
+ while (((tmp_pid = wait3(statptr, options, 0)) != pid) &&
+ (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
+ ;
+ return tmp_pid;
+#endif
}
#endif
#ifndef HAVE_MEMMOVE
void *memmove(void *dest, const void *src, size_t n)
{
- memcpy(dest, src, n);
+ bcopy((char *) src, (char *) dest, n);
return dest;
}
#endif