eap@bu-pub.bu.edu (Eric A Pearce) (12/16/90)
This works.
The basic outline is borrowed from conf.c in Sendmail 5.61 and
has been modified with sgi-specific features.
/*
* Copyright (c) 1983 Eric P. Allman
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <sys/types.h>
#include <nlist.h>
struct nlist Nl[] =
{
{ "avenrun" },
#define X_AVENRUN 0
{ 0 },
};
getla()
{
static int kmem = -1;
long avenrun[3];
extern off_t lseek();
if (kmem < 0)
{
kmem = open("/dev/kmem", 0, 0);
if (kmem < 0)
return (-1);
(void) fcntl(kmem, F_SETFD, 1);
nlist("/unix", Nl);
if (Nl[0].n_type == 0)
return (-1);
}
if (lseek(kmem, (off_t) Nl[X_AVENRUN].n_value & 0x7fffffff, 0) == -1 ||
read(kmem, (char *) avenrun, sizeof(avenrun)) < sizeof(avenrun))
{
/* thank you Ian */
return (-1);
}
return ((int) (avenrun[0] / 1024.0 + 0.5));
}
--
-------------------------------------------------------------------------------
Eric Pearce eap@bu-pub.bu.edu
Boston University Information Technology
111 Cummington Street, Boston MA 02215 617-353-2780 voice 617-353-6260 fax