#include "buffer.h"
#include "exit.h"
#include "fmt.h"
#include "select.h"

#include "auto_spawn.h"
#define MAXSPAWN 1000 /* Silent spawn limit increased to 1000 */

char num[FMT_ULONG];
fd_set fds;

int main()
{
  unsigned long hiddenlimit;
  unsigned long maxnumd;

  hiddenlimit = sizeof(fds) * 8;
  maxnumd = (hiddenlimit - 5) / 2;

  if (auto_spawn < 1) {
    buffer_puts(buffer_2, "Oops. You have set conf-spawn lower than 1.\n");
    buffer_flush(buffer_2);
    _exit(1);
  }

  if (auto_spawn > MAXSPAWN) {
    buffer_puts(buffer_2, "Oops. You have set conf-spawn higher than MAXSPAWN.\n");
    buffer_flush(buffer_2);
    _exit(1);
  }

  if (auto_spawn > maxnumd) {
    buffer_puts(buffer_2, "Oops. Your system's FD_SET() has a hidden limit of ");
    buffer_put(buffer_2, num, fmt_ulong(num, hiddenlimit));
    buffer_puts(
        buffer_2,
        " descriptors.\n\
This means that the qmail daemons could crash if you set the run-time\n\
concurrency higher than ");
    buffer_put(buffer_2, num, fmt_ulong(num, maxnumd));
    buffer_puts(
        buffer_2,
        ". So I'm going to insist that the concurrency\n\
limit in conf-spawn be at most ");
    buffer_put(buffer_2, num, fmt_ulong(num, maxnumd));
    buffer_puts(buffer_2, ". Right now it's ");
    buffer_put(buffer_2, num, fmt_ulong(num, (unsigned long)auto_spawn));
    buffer_puts(buffer_2, ".\n");
    buffer_flush(buffer_2);
    _exit(1);
  }
  _exit(0);
}