_SC_OPEN_MAX
#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
files = sysconf(_SC_OPEN_MAX);
#ifdef _SC_OPEN_MAX
size = (int) sysconf(_SC_OPEN_MAX);
# define SSH_SYSFDMAX sysconf(_SC_OPEN_MAX)
maxfd = sysconf(_SC_OPEN_MAX);
case _SC_OPEN_MAX:
maxfd = sysconf(_SC_OPEN_MAX);
maxfd = sysconf(_SC_OPEN_MAX);
if ((fds = sysconf(_SC_OPEN_MAX)) <= 0)