Annotation of 43BSDReno/sbin/nfsiod/nfsiod.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1989 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Rick Macklem at The University of Guelph.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #ifndef lint
                     24: char copyright[] =
                     25: "@(#) Copyright (c) 1989 Regents of the University of California.\n\
                     26:  All rights reserved.\n";
                     27: #endif not lint
                     28: 
                     29: #ifndef lint
                     30: static char sccsid[] = "@(#)nfsiod.c   5.4 (Berkeley) 6/29/90";
                     31: #endif not lint
                     32: 
                     33: #include <stdio.h>
                     34: #include <signal.h>
                     35: #include <fcntl.h>
                     36: #include <sys/types.h>
                     37: #include <sys/ioctl.h>
                     38: 
                     39: /* Global defs */
                     40: #ifdef DEBUG
                     41: int debug = 1;
                     42: #else
                     43: int debug = 0;
                     44: #endif
                     45: 
                     46: /*
                     47:  * Nfsiod does asynchronous buffered I/O on behalf of the NFS client.
                     48:  * It does not have to be running for correct operation, but will improve
                     49:  * throughput. The one optional argument is the number of children to fork.
                     50:  */
                     51: main(argc, argv)
                     52:        int argc;
                     53:        char *argv[];
                     54: {
                     55:        register int i;
                     56:        int cnt;
                     57: 
                     58:        if (debug == 0) {
                     59:                daemon(0, 0);
                     60:                signal(SIGINT, SIG_IGN);
                     61:                signal(SIGQUIT, SIG_IGN);
                     62:                signal(SIGTERM, SIG_IGN);
                     63:                signal(SIGHUP, SIG_IGN);
                     64:        }
                     65:        if (argc != 2 || (cnt = atoi(argv[1])) <= 0 || cnt > 20)
                     66:                cnt = 1;
                     67:        for (i = 1; i < cnt; i++)
                     68:                if (fork() == 0)
                     69:                        break;
                     70:        async_daemon();         /* Never returns */
                     71:        exit(1);
                     72: }

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