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15791df4 KM |
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 | |
9 | * provided that the above copyright notice and this paragraph are | |
10 | * duplicated in all such forms and that any documentation, | |
11 | * advertising materials, and other materials related to such | |
12 | * distribution and use acknowledge that the software was developed | |
13 | * by the University of California, Berkeley. The name of the | |
14 | * University may not be used to endorse or promote products derived | |
15 | * from this software without specific prior written permission. | |
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
17 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
19 | */ | |
20 | ||
21 | #ifndef lint | |
22 | char copyright[] = | |
23 | "@(#) Copyright (c) 1989 Regents of the University of California.\n\ | |
24 | All rights reserved.\n"; | |
25 | #endif not lint | |
26 | ||
27 | #ifndef lint | |
8fbf001c | 28 | static char sccsid[] = "@(#)nfsiod.c 5.2 (Berkeley) %G%"; |
15791df4 KM |
29 | #endif not lint |
30 | ||
31 | #include <stdio.h> | |
15791df4 KM |
32 | #include <signal.h> |
33 | #include <fcntl.h> | |
34 | #include <sys/types.h> | |
35 | #include <sys/ioctl.h> | |
36 | ||
37 | /* Global defs */ | |
38 | #ifdef DEBUG | |
15791df4 KM |
39 | int debug = 1; |
40 | #else | |
41 | int debug = 0; | |
42 | #endif | |
43 | ||
44 | /* | |
8fbf001c KM |
45 | * Nfsiod does asynchronous buffered I/O on behalf of the NFS client. |
46 | * It does not have to be running for correct operation, but will improve | |
47 | * throughput. The one optional argument is the number of children to fork. | |
15791df4 KM |
48 | */ |
49 | main(argc, argv) | |
50 | int argc; | |
51 | char *argv[]; | |
52 | { | |
53 | register int i; | |
54 | int cnt; | |
55 | ||
56 | if (debug == 0) { | |
57 | if (fork()) | |
58 | exit(0); | |
59 | { int s; | |
60 | for (s = 0; s < 10; s++) | |
61 | (void) close(s); | |
62 | } | |
63 | (void) open("/", O_RDONLY); | |
64 | (void) dup2(0, 1); | |
65 | (void) dup2(0, 2); | |
66 | { int tt = open("/dev/tty", O_RDWR); | |
67 | if (tt > 0) { | |
68 | ioctl(tt, TIOCNOTTY, (char *)0); | |
69 | close(tt); | |
70 | } | |
71 | } | |
72 | (void) setpgrp(0, 0); | |
73 | signal(SIGTSTP, SIG_IGN); | |
74 | signal(SIGTTIN, SIG_IGN); | |
75 | signal(SIGTTOU, SIG_IGN); | |
76 | signal(SIGINT, SIG_IGN); | |
77 | signal(SIGQUIT, SIG_IGN); | |
78 | signal(SIGTERM, SIG_IGN); | |
79 | signal(SIGHUP, SIG_IGN); | |
80 | } | |
15791df4 KM |
81 | if (argc != 2 || (cnt = atoi(argv[1])) <= 0 || cnt > 20) |
82 | cnt = 1; | |
83 | for (i = 1; i < cnt; i++) | |
84 | if (fork() == 0) | |
85 | break; | |
8fbf001c KM |
86 | async_daemon(); /* Never returns */ |
87 | exit(1); | |
15791df4 | 88 | } |