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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
WARNING: This file was generated by dkct.
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk3signl.ctr
*/
/*
Copyright (C) 2011-2017, Dirk Krause
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @file dk3signl.c The dk3signl module.
*/
#line 47 "dk3signl.ctr"
#include "dk3all.h"
#line 53 "dk3signl.ctr"
#if DK3_HAVE_SIGACTION
/** Set new signal disposition.
@param signo Signal number of signal to modify.
@param fct New signal disposition.
@return Previous signal disposition.
*/
static
dk3_signal_disp_t
dk3signal_sigaction(int signo, dk3_signal_disp_t fct)
{
dk3_signal_disp_t back = (dk3_signal_disp_t)SIG_ERR;
struct sigaction act, oact;
act.sa_handler = fct;
sigemptyset(&act.sa_mask);
if(signo == SIGALRM) {
#ifdef SA_INTERRUPT
act.sa_flags |= SA_INTERRUPT;
#else
#ifdef SA_RESTART
act.sa_flags |= SA_RESTART;
#endif
#endif
}
if(sigaction(signo, &act, &oact) < 0) {
back = (dk3_signal_disp_t)SIG_ERR;
} else {
back = (dk3_signal_disp_t)oact.sa_handler;
}
return back;
}
#endif
dk3_signal_disp_t
dk3signal_set(int signo, dk3_signal_disp_t fct)
{
dk3_signal_disp_t back = NULL;
#if DK3_HAVE_SIGACTION
/* + sigaction */
back = dk3signal_sigaction(signo, fct);
/* - sigaction */
#else
#if DK3_HAVE_SIGSET
/* + sigset */
back = (dk3_signal_disp_t)sigset(signo,fct);
/* - sigset */
#else
#if DK3_HAVE_SIGNAL
/* + signal */
back = (dk3_signal_disp_t)signal(signo,fct);
/* - signal */
#else
#error "No signal handling functions available"
#endif
#endif
#endif
return back;
}
void
dk3signal_refresh(int signo, dk3_signal_disp_t fct)
{
#if DK3_HAVE_SIGACTION
#else
#if DK3_HAVE_SIGSET
#else
#if DK3_HAVE_SIGNAL
(void)signal(signo, fct);
#else
#endif
#endif
#endif
}
int
dk3signal_available(void)
{
int back = DK3_SIGNAL_HANDLING_TYPE_NONE;
#if DK3_HAVE_SIGACTION
back = DK3_SIGNAL_HANDLING_TYPE_SIGACTION;
#else
#if DK3_HAVE_SIGSET
back = DK3_SIGNAL_HANDLING_TYPE_SIGSET;
#else
#if DK3_HAVE_SIGNAL
back = DK3_SIGNAL_HANDLING_TYPE_SIGNAL;
#endif
#endif
#endif
return back;
}
/* vim: set ai sw=2 : */
|