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Date: Wed, 19 Jun 1996 14:12:12 GMT
Message-Id: <199606191412.OAA20866@jraynard.demon.co.uk>
From: James Raynard <fqueries@jraynard.demon.co.uk>
To: trig@netlink.co.uk
CC: questions@freebsd.org
In-reply-to: <m0uW4t2-000I5NC@netlink.co.uk> (trig@netlink.co.uk)
Subject: Re: Max first parameter of a Select call?
Sender: owner-questions@freebsd.org
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I wrote:-

> In any case, the number of file descriptors a process can have open is
> limited by OPEN_MAX, which is 64 on FreeBSD:-

Sorry folks, that was complete Horlicks:-

$ cat temp.c
#include <unistd.h>
#include <stdio.h>

main() {
        int i = 1;

        for (;;) {
                if (dup(0) < 0) {
                        printf("dup failed with i = %d\n", i);
                        perror("dup");
                        break;
                }
                i++;
        }

        return 0;
}
$ gcc temp.c
$ ulimit -n    
64
$ ./a.out
dup failed with i = 61
dup: Too many open files
$ ulimit -n unlimited
$ ulimit -n           
360
$ ./a.out
dup failed with i = 357
dup: Too many open files
$ 

Next time, I'll try to look at the shell limits *before* posting 8-(

-- 
James Raynard, Edinburgh, Scotland
james@jraynard.demon.co.uk