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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://www.qt.io/licensing. For further information
** use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "terminal.h"
#include <QDebug>
#include <QIODevice>
#include <QSocketNotifier>
#include <utils/qtcassert.h>
#ifdef Q_OS_UNIX
# define DEBUGGER_USE_TERMINAL
#endif
#ifdef DEBUGGER_USE_TERMINAL
# include <errno.h>
# include <fcntl.h>
# include <stdlib.h>
# include <string.h>
# include <unistd.h>
# include <sys/ioctl.h>
# include <sys/stat.h>
#endif
namespace Debugger {
namespace Internal {
static QString currentError()
{
int err = errno;
return QString::fromLatin1(strerror(err));
}
Terminal::Terminal(QObject *parent)
: QObject(parent), m_isUsable(false), m_masterFd(-1), m_masterReader(0)
{
}
void Terminal::setup()
{
#ifdef DEBUGGER_USE_TERMINAL
if (!qEnvironmentVariableIsSet("QTC_USE_PTY"))
return;
m_masterFd = ::open("/dev/ptmx", O_RDWR);
if (m_masterFd < 0) {
error(tr("Terminal: Cannot open /dev/ptmx: %1").arg(currentError()));
return;
}
const char *sName = ptsname(m_masterFd);
if (!sName) {
error(tr("Terminal: ptsname failed: %1").arg(currentError()));
return;
}
m_slaveName = sName;
struct stat s;
int r = ::stat(m_slaveName.constData(), &s);
if (r != 0) {
error(tr("Terminal: Error: %1").arg(currentError()));
return;
}
if (!S_ISCHR(s.st_mode)) {
error(tr("Terminal: Slave is no character device."));
return;
}
m_masterReader = new QSocketNotifier(m_masterFd, QSocketNotifier::Read, this);
connect(m_masterReader, &QSocketNotifier::activated,
this, &Terminal::onSlaveReaderActivated);
r = grantpt(m_masterFd);
if (r != 0) {
error(tr("Terminal: grantpt failed: %1").arg(currentError()));
return;
}
r = unlockpt(m_masterFd);
if (r != 0) {
error(tr("Terminal: unlock failed: %1").arg(currentError()));
return;
}
m_isUsable = true;
#endif
}
bool Terminal::isUsable() const
{
return m_isUsable;
}
int Terminal::write(const QByteArray &msg)
{
#ifdef DEBUGGER_USE_TERMINAL
return ::write(m_masterFd, msg.constData(), msg.size());
#else
Q_UNUSED(msg);
return -1;
#endif
}
bool Terminal::sendInterrupt()
{
#ifdef DEBUGGER_USE_TERMINAL
if (!m_isUsable)
return false;
ssize_t written = ::write(m_masterFd, "\003", 1);
return written == 1;
#else
return false;
#endif
}
void Terminal::onSlaveReaderActivated(int fd)
{
#ifdef DEBUGGER_USE_TERMINAL
ssize_t available = 0;
int ret = ::ioctl(fd, FIONREAD, (char *) &available);
if (ret != 0)
return;
QByteArray buffer(available, Qt::Uninitialized);
ssize_t got = ::read(fd, buffer.data(), available);
int err = errno;
if (got < 0) {
error(tr("Terminal: Read failed: %1").arg(QString::fromLatin1(strerror(err))));
return;
}
buffer.resize(got);
if (got >= 0)
stdOutReady(QString::fromUtf8(buffer));
#else
Q_UNUSED(fd);
#endif
}
} // namespace Internal
} // namespace Debugger
|
