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
|
//
// Automated Testing Framework (atf)
//
// Copyright (c) 2007, 2008, 2010 The NetBSD Foundation, Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
//
#if defined(HAVE_CONFIG_H)
#include "bconfig.h"
#endif
extern "C" {
#include <signal.h>
#include <unistd.h>
}
#include <cerrno>
#include "atf-c++/detail/exceptions.hpp"
#include "atf-c++/detail/sanity.hpp"
#include "signals.hpp"
namespace impl = atf::atf_run;
#define IMPL_NAME "atf::atf_run"
const int impl::last_signo = LAST_SIGNO;
// ------------------------------------------------------------------------
// The "signal_holder" class.
// ------------------------------------------------------------------------
namespace {
static bool happened[LAST_SIGNO + 1];
static
void
holder_handler(const int signo)
{
happened[signo] = true;
}
} // anonymous namespace
impl::signal_holder::signal_holder(const int signo) :
m_signo(signo),
m_sp(NULL)
{
happened[signo] = false;
m_sp = new signal_programmer(m_signo, holder_handler);
}
impl::signal_holder::~signal_holder(void)
{
if (m_sp != NULL)
delete m_sp;
if (happened[m_signo])
::kill(::getpid(), m_signo);
}
void
impl::signal_holder::process(void)
{
if (happened[m_signo]) {
delete m_sp;
m_sp = NULL;
happened[m_signo] = false;
::kill(::getpid(), m_signo);
m_sp = new signal_programmer(m_signo, holder_handler);
}
}
// ------------------------------------------------------------------------
// The "signal_programmer" class.
// ------------------------------------------------------------------------
impl::signal_programmer::signal_programmer(const int signo, const handler h) :
m_signo(signo),
m_handler(h),
m_programmed(false)
{
struct ::sigaction sa;
sa.sa_handler = m_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (::sigaction(m_signo, &sa, &m_oldsa) == -1)
throw atf::system_error(IMPL_NAME, "Could not install handler for "
"signal", errno);
m_programmed = true;
}
impl::signal_programmer::~signal_programmer(void)
{
unprogram();
}
void
impl::signal_programmer::unprogram(void)
{
if (m_programmed) {
if (::sigaction(m_signo, &m_oldsa, NULL) == -1)
UNREACHABLE;
m_programmed = false;
}
}
// ------------------------------------------------------------------------
// Free functions.
// ------------------------------------------------------------------------
void
impl::reset(const int signo)
{
struct ::sigaction sa;
sa.sa_handler = SIG_DFL;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
(void)::sigaction(signo, &sa, NULL);
}
|
