1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <signal.h>
#include "tmextern.h"
/*
* catch_signals:
* ttymon catch some signals and ignore the rest.
*
* SIGTERM - killed by somebody
* SIGPOLL - got message on pmpipe, probably from sac
* or on PCpipe
* SIGCLD - tmchild died
*/
void
catch_signals()
{
sigset_t cset;
struct sigaction sigact;
extern void sigterm();
extern void sigchild();
extern void sigpoll_catch();
#ifdef DEBUG
extern void dump_pmtab();
extern void dump_ttydefs();
debug("in catch_signals");
#endif
cset = Origmask;
(void)sigdelset(&cset, SIGTERM);
(void)sigdelset(&cset, SIGCLD);
(void)sigdelset(&cset, SIGPOLL);
#ifdef DEBUG
(void)sigdelset(&cset, SIGUSR1);
(void)sigdelset(&cset, SIGUSR2);
#endif
(void)sigprocmask(SIG_SETMASK, &cset, NULL);
sigact.sa_flags = 0;
sigact.sa_handler = sigterm;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaddset(&sigact.sa_mask, SIGTERM);
(void)sigaction(SIGTERM, &sigact, NULL);
sigact.sa_flags = 0;
sigact.sa_handler = sigchild;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaction(SIGCLD, &sigact, NULL);
sigact.sa_flags = 0;
sigact.sa_handler = sigpoll_catch;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaddset(&sigact.sa_mask, SIGPOLL);
(void)sigaction(SIGPOLL, &sigact, NULL);
#ifdef DEBUG
sigact.sa_flags = 0;
sigact.sa_handler = dump_pmtab;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaddset(&sigact.sa_mask, SIGUSR1);
(void)sigaction(SIGUSR1, &sigact, NULL);
sigact.sa_flags = 0;
sigact.sa_handler = dump_ttydefs;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaddset(&sigact.sa_mask, SIGUSR2);
(void)sigaction(SIGUSR2, &sigact, NULL);
#endif
}
/*
* child_sigcatch() - tmchild inherits some signal_catch from parent
* and need to reset them
*/
void
child_sigcatch()
{
struct sigaction sigact;
sigset_t cset;
extern void sigpoll();
extern void sigint();
cset = Origmask;
(void)sigdelset(&cset, SIGINT);
(void)sigdelset(&cset, SIGPOLL);
(void)sigprocmask(SIG_SETMASK, &cset, NULL);
sigact.sa_flags = 0;
sigact.sa_handler = sigpoll;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaddset(&sigact.sa_mask, SIGPOLL);
(void)sigaction(SIGPOLL, &sigact, NULL);
sigact.sa_flags = 0;
sigact.sa_handler = sigint;
(void)sigemptyset(&sigact.sa_mask);
(void)sigaddset(&sigact.sa_mask, SIGINT);
(void)sigaction(SIGINT, &sigact, NULL);
}
|
