1 #include "substdio.h"

     2 #include "subfd.h"

     3 #include "fmt.h"

     4 #include "select.h"

     5 #include "exit.h"

     6 #include "auto_spawn.h"

     7 

     8 char num[FMT_ULONG];

     9 fd_set fds;

    10 

    11 void main()

    12 {

    13   unsigned long hiddenlimit;

    14   unsigned long maxnumd;

    15  

    16   hiddenlimit = sizeof(fds) * 8;

    17   maxnumd = (hiddenlimit - 5) / 2;

    18  

    19   if (auto_spawn < 1) {

    20     substdio_puts(subfderr,"Oops. You have set conf-spawn lower than 1.\n");

    21     substdio_flush(subfderr);

    22     _exit(1);

    23   }

    24 

    25   if (auto_spawn > 255) {

    26     substdio_puts(subfderr,"Oops. You have set conf-spawn higher than 255.\n");

    27     substdio_flush(subfderr);

    28     _exit(1);

    29   }

    30 

    31   if (auto_spawn > maxnumd) {

    32     substdio_puts(subfderr,"Oops. Your system's FD_SET() has a hidden limit of ");

    33     substdio_put(subfderr,num,fmt_ulong(num,hiddenlimit));

    34     substdio_puts(subfderr," descriptors.\n\

    35 This means that the qmail daemons could crash if you set the run-time\n\

    36 concurrency higher than ");

    37     substdio_put(subfderr,num,fmt_ulong(num,maxnumd));

    38     substdio_puts(subfderr,". So I'm going to insist that the concurrency\n\

    39 limit in conf-spawn be at most ");

    40     substdio_put(subfderr,num,fmt_ulong(num,maxnumd));

    41     substdio_puts(subfderr,". Right now it's ");

    42     substdio_put(subfderr,num,fmt_ulong(num,(unsigned long) auto_spawn));

    43     substdio_puts(subfderr,".\n");

    44     substdio_flush(subfderr);

    45     _exit(1);

    46   }

    47   _exit(0);

    48 }