gold: Fix hardcoded library search path
[dragonfly.git] / libexec / xtend / status.c
CommitLineData
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1/*-
2 * Copyright (c) 1992, 1993, 1995 Eugene W. Stark
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Eugene W. Stark.
16 * 4. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY EUGENE W. STARK (THE AUTHOR) ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
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30 *
31 * $FreeBSD: src/libexec/xtend/status.c,v 1.8 1999/08/28 00:10:30 peter Exp $
3eefb696 32 * $DragonFly: src/libexec/xtend/status.c,v 1.3 2003/11/14 03:54:32 dillon Exp $
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33 */
34
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35#include <stdio.h>
36#include <unistd.h>
37#include <sys/param.h>
38#include <sys/stat.h>
39#include "xtend.h"
40#include "xten.h"
41#include "paths.h"
42
3eefb696 43void printstatus (FILE *, STATUS *);
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44
45/*
46 * Initialize the status table from the status files
47 */
48
49void
50initstatus()
51{
52 if(lseek(status, 0, SEEK_SET) != 0) {
53 fprintf(Log, "%s: Seek error on status file\n", thedate());
54 return;
55 }
56 if(read(status, Status, 16*16*sizeof(STATUS)) != 16*16*sizeof(STATUS)) {
57 fprintf(Log, "%s: Read error on status file\n", thedate());
58 return;
59 }
60}
61
62/*
63 * Checkpoint status of any devices whose status has changed
64 * and notify anyone monitoring those devices.
65 */
66
67void
68checkpoint_status()
69{
70 int h, i, k, offset;
71
72 offset = 0;
73 for(h = 0; h < 16; h++) {
74 for(i = 0; i < 16; i++) {
75 if(Status[h][i].changed) {
76 if(lseek(status, offset, SEEK_SET) != offset) {
77 fprintf(Log, "%s: Seek error on status file\n", thedate());
78 } else {
79 if(write(status, &Status[h][i], sizeof(STATUS)) != sizeof(STATUS)) {
80 fprintf(Log, "%s: Write error on status file\n", thedate());
81 }
82 }
83 Status[h][i].changed = 0;
84 for(k = 0; k < MAXMON; k++) {
85 if(Monitor[k].inuse
86 && Monitor[k].house == h && Monitor[k].unit == i) {
87 /*
88 * Arrange to catch SIGPIPE in case client has gone away.
89 */
90 extern int client;
91 extern void clientgone();
92 void (*prev)();
93
94 client = k;
95 prev = signal(SIGPIPE, clientgone);
96 printstatus(Monitor[k].user, &Status[h][i]);
97 fflush(Monitor[k].user);
98 signal(SIGPIPE, prev);
99 }
100 }
101 }
102 offset += sizeof(STATUS);
103 }
104 }
105}
106
107int client;
108
109void clientgone()
110{
111 fprintf(Log, "%s: Deleting monitor table entry %d, client gone\n", thedate(), client);
112 fclose(Monitor[client].user);
113 Monitor[client].inuse = 0;
114}