/* -*-c-*-
*
- * $Id: noise.c,v 1.1 1997/08/07 09:45:26 mdw Exp $
+ * $Id: noise.c,v 1.5 1998/04/23 13:25:23 mdw Exp $
*
* Collection of environmental noise
*
- * (c) 1997 EBI
+ * (c) 1998 EBI
*/
/*----- Licensing notice --------------------------------------------------*
/*----- Revision history --------------------------------------------------*
*
* $Log: noise.c,v $
+ * Revision 1.5 1998/04/23 13:25:23 mdw
+ * Try to reduce the amount of `ps'ing done under OSF/1, because /dev/kmem
+ * seems very slow.
+ *
+ * Revision 1.4 1998/02/20 17:52:32 mdw
+ * Don't use `df' for noise gathering, because it gets upset when NFS
+ * servers aren't responding.
+ *
+ * Revision 1.3 1998/01/12 16:46:19 mdw
+ * Fix copyright date.
+ *
+ * Revision 1.2 1997/08/20 16:19:57 mdw
+ * Fix test for `/dev/random' so that it doesn't close `stdin' if it fails!
+ *
* Revision 1.1 1997/08/07 09:45:26 mdw
* New source file added to acquire environmental noise and add it to the
* randomness pool (see `rand.c').
unsigned char buff[64];
ssize_t sz;
- if ((fd = open("/dev/random", O_RDONLY) >= 0) &&
+ if ((fd = open("/dev/random", O_RDONLY)) >= 0 &&
(f = fcntl(fd, F_GETFL, 0)) >= 0 &&
fcntl(fd, F_SETFL, f | O_NONBLOCK) >= 0 &&
(sz = read(fd, buff, sizeof(buff))) > 0) {
/* --- Try some commands which ask the outside world some questions --- */
- noise__shell("ps auxww");
- noise__shell("ps -ef");
- noise__shell("df");
- /* @noise__shell("netstat -a");@ -- takes too long */
+ noise__shell("ps auxww || ps -ef; netstat -an");
/* --- Get our resource usage to see if that's at all interesting --- */