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