Very Computer

I've redirected followups to comp.unix.programmer, since this doesn't seem
specific to TCP/IP (the only relationship at all to TCP/IP is that it's
common for servers to need lots of open descriptors).

An unprivileged user can increase his limit up to the hard limit that the
sysadmin has configured for the system.

Quote:>The following code looks ok to me, but it doesn't work.

What error does it get?

Quote:>I also tried chmod +s.

Did you set the owner to root when you did that?

Quote:>The only way to increase the number of file descriptors is:

>root: ulimit -n 2048

>And my written web server must run in the root shell :-(
>(We use the Korn shell)

When you start the web server from one of the /etc/init.d scripts, you can
increase the limit then:

(ulimit -n 2048; <command to start web server>)

Quote:>Thank you very much for comments.

>Joerg

>#include <sys/sockio.h>
>#include <sys/time.h>
>#include <sys/resource.h>
>#include <unistd.h>

>int main( int argc, char* argv[] )
>{
>   struct rlimit rl;
>    int rc    = 0;
>    int errNo = 0;;

>    rc = getrlimit( RLIMIT_NOFILE, &rl );
>    if( rc < 0 )
>    {
>         cerr << "getrlimit( RLIMIT_NOFILE, &rl ): " << errno << endl;
>         exit( 1 );
>    }

>    cout << "current" << endl
>            << "rl.rlim_cur: " << rl.rlim_cur  << endl
>            << "rl.rlim_max: " << rl.rlim_max  << endl
>             << endl;

>    // set current soft limit to the hard limit;
>    rl.rlim_cur = rl.rlim_max;

>    rc = setrlimit( RLIMIT_NOFILE, &rl );
>    if( rc < 0 )
>    {
>         cerr << "setrlimit( RLIMIT_NOFILE, &rl ): " << errno << endl;
>         exit( 1 );
>    }

>    memset( &rl, 0, sizeof(rl) );

>    rc = getrlimit( RLIMIT_NOFILE, &rl );
>    if( rc < 0 )
>    {
>         cerr << "getrlimit( RLIMIT_NOFILE, &rl ): " << errno << endl;
>         exit( 1 );
>    }

>    cout << "new" << endl
>            << "rl.rlim_cur: " << rl.rlim_cur  << endl
>            << "rl.rlim_max: " << rl.rlim_max  << endl
>           << endl;

>   return 0;
>}

--

GTE Internetworking, Powered by BBN, Burlington, MA
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