qfbvthandler.cpp

Absolute File Name:/home/qt/qt5_coco/qt5/qtbase/src/platformsupport/fbconvenience/qfbvthandler.cpp
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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the plugins of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qfbvthandler_p.h"-
41#include <QtCore/QSocketNotifier>-
42-
43#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID) && (!defined(QT_NO_EVDEV) || !defined(QT_NO_LIBINPUT))-
44-
45#define VTH_ENABLED-
46-
47#include <private/qcore_unix_p.h>-
48#include <unistd.h>-
49#include <signal.h>-
50#include <errno.h>-
51#include <fcntl.h>-
52#include <sys/signalfd.h>-
53#include <sys/ioctl.h>-
54#include <linux/kd.h>-
55-
56#ifndef KDSKBMUTE-
57#define KDSKBMUTE 0x4B51-
58#endif-
59-
60#ifdef K_OFF-
61#define KBD_OFF_MODE K_OFF-
62#else-
63#define KBD_OFF_MODE K_RAW-
64#endif-
65-
66#endif-
67-
68QT_BEGIN_NAMESPACE-
69-
70#ifdef VTH_ENABLED-
71static void setTTYCursor(bool enable)-
72{-
73 const char * const devs[] = { "/dev/tty0", "/dev/tty", "/dev/console", 0 };-
74 int fd = -1;-
75 for (const char * const *dev = devs; *dev; ++dev) {
*devDescription
TRUEnever evaluated
FALSEnever evaluated
0
76 fd = QT_OPEN(*dev, O_RDWR);-
77 if (fd != -1) {
fd != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
78 // Enable/disable screen blanking and the blinking cursor.-
79 const char *termctl = enable ? "\033[9;15]\033[?33h\033[?25h\033[?0c" : "\033[9;0]\033[?33l\033[?25l\033[?1c";
enableDescription
TRUEnever evaluated
FALSEnever evaluated
0
80 QT_WRITE(fd, termctl, strlen(termctl) + 1);-
81 QT_CLOSE(fd);-
82 return;
never executed: return;
0
83 }-
84 }
never executed: end of block
0
85}
never executed: end of block
0
86#endif-
87-
88#ifdef VTH_ENABLED-
89static QFbVtHandler *vth;-
90-
91void QFbVtHandler::signalHandler(int sigNo)-
92{-
93 char a = sigNo;-
94 QT_WRITE(vth->m_sigFd[0], &a, sizeof(a));-
95}
never executed: end of block
0
96#endif-
97-
98QFbVtHandler::QFbVtHandler(QObject *parent)-
99 : QObject(parent),-
100 m_tty(-1),-
101 m_signalNotifier(0)-
102{-
103#ifdef VTH_ENABLED-
104 if (isatty(0))
isatty(0)Description
TRUEnever evaluated
FALSEnever evaluated
0
105 m_tty = 0;
never executed: m_tty = 0;
0
106-
107 if (::socketpair(AF_UNIX, SOCK_STREAM, 0, m_sigFd)) {
::socketpair(1...M, 0, m_sigFd)Description
TRUEnever evaluated
FALSEnever evaluated
0
108 qErrnoWarning(errno, "QFbVtHandler: socketpair() failed");-
109 return;
never executed: return;
0
110 }-
111-
112 vth = this;-
113 setTTYCursor(false);-
114 setKeyboardEnabled(false);-
115-
116 m_signalNotifier = new QSocketNotifier(m_sigFd[1], QSocketNotifier::Read, this);-
117 connect(m_signalNotifier, &QSocketNotifier::activated, this, &QFbVtHandler::handleSignal);-
118-
119 if (!qEnvironmentVariableIntValue("QT_QPA_NO_SIGNAL_HANDLER")) {
!qEnvironmentV...GNAL_HANDLER")Description
TRUEnever evaluated
FALSEnever evaluated
0
120 struct sigaction sa;-
121 sa.sa_flags = 0;-
122 sa.sa_handler = signalHandler;-
123 sigemptyset(&sa.sa_mask);-
124 sigaction(SIGINT, &sa, 0); // Ctrl+C-
125 sigaction(SIGTSTP, &sa, 0); // Ctrl+Z-
126 sigaction(SIGCONT, &sa, 0);-
127 sigaction(SIGTERM, &sa, 0); // default signal used by kill-
128 }
never executed: end of block
0
129#endif-
130}
never executed: end of block
0
131-
132QFbVtHandler::~QFbVtHandler()-
133{-
134#ifdef VTH_ENABLED-
135 setKeyboardEnabled(true);-
136 setTTYCursor(true);-
137-
138 if (m_signalNotifier) {
m_signalNotifierDescription
TRUEnever evaluated
FALSEnever evaluated
0
139 close(m_sigFd[0]);-
140 close(m_sigFd[1]);-
141 }
never executed: end of block
0
142#endif-
143}
never executed: end of block
0
144-
145void QFbVtHandler::setKeyboardEnabled(bool enable)-
146{-
147#ifdef VTH_ENABLED-
148 if (m_tty == -1)
m_tty == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
149 return;
never executed: return;
0
150-
151 if (enable) {
enableDescription
TRUEnever evaluated
FALSEnever evaluated
0
152 ::ioctl(m_tty, KDSKBMUTE, 0);-
153 ::ioctl(m_tty, KDSKBMODE, m_oldKbdMode);-
154 } else {
never executed: end of block
0
155 ::ioctl(m_tty, KDGKBMODE, &m_oldKbdMode);-
156 if (!qEnvironmentVariableIntValue("QT_QPA_ENABLE_TERMINAL_KEYBOARD")) {
!qEnvironmentV...NAL_KEYBOARD")Description
TRUEnever evaluated
FALSEnever evaluated
0
157 ::ioctl(m_tty, KDSKBMUTE, 1);-
158 ::ioctl(m_tty, KDSKBMODE, KBD_OFF_MODE);-
159 }
never executed: end of block
0
160 }
never executed: end of block
0
161#else-
162 Q_UNUSED(enable);-
163#endif-
164}-
165-
166void QFbVtHandler::handleSignal()-
167{-
168#ifdef VTH_ENABLED-
169 m_signalNotifier->setEnabled(false);-
170-
171 char sigNo;-
172 if (QT_READ(m_sigFd[1], &sigNo, sizeof(sigNo)) == sizeof(sigNo)) {
qt_safe_read(m... sizeof(sigNo)Description
TRUEnever evaluated
FALSEnever evaluated
0
173 switch (sigNo) {-
174 case SIGINT: // fallthrough
never executed: case 2:
0
175 case SIGTERM:
never executed: case 15:
0
176 handleInt();-
177 break;
never executed: break;
0
178 case SIGTSTP:
never executed: case 20:
0
179 emit aboutToSuspend();-
180 setKeyboardEnabled(true);-
181 setTTYCursor(true);-
182 ::kill(getpid(), SIGSTOP);-
183 break;
never executed: break;
0
184 case SIGCONT:
never executed: case 18:
0
185 setTTYCursor(false);-
186 setKeyboardEnabled(false);-
187 emit resumed();-
188 break;
never executed: break;
0
189 default:
never executed: default:
0
190 break;
never executed: break;
0
191 }-
192 }-
193-
194 m_signalNotifier->setEnabled(true);-
195#endif-
196}
never executed: end of block
0
197-
198void QFbVtHandler::handleInt()-
199{-
200#ifdef VTH_ENABLED-
201 emit interrupted();-
202 setKeyboardEnabled(true);-
203 setTTYCursor(true);-
204 _exit(1);-
205#endif-
206}
never executed: end of block
0
207-
208QT_END_NAMESPACE-
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