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) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the plugins of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL21$-
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 http://www.qt.io/terms-conditions. For further-
15** information use the contact form at http://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 2.1 or version 3 as published by the Free-
20** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
21** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
22** following information to ensure the GNU Lesser General Public License-
23** requirements will be met: https://www.gnu.org/licenses/lgpl.html and-
24** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.-
25**-
26** As a special exception, The Qt Company gives you certain additional-
27** rights. These rights are described in The Qt Company LGPL Exception-
28** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34#include "qfbvthandler_p.h"-
35#include <QtCore/QSocketNotifier>-
36-
37#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID) && (!defined(QT_NO_EVDEV) || !defined(QT_NO_LIBINPUT))-
38-
39#define VTH_ENABLED-
40-
41#include <private/qcore_unix_p.h>-
42#include <unistd.h>-
43#include <signal.h>-
44#include <errno.h>-
45#include <fcntl.h>-
46#include <sys/signalfd.h>-
47#include <sys/ioctl.h>-
48#include <linux/kd.h>-
49-
50#ifndef KDSKBMUTE-
51#define KDSKBMUTE 0x4B51-
52#endif-
53-
54#ifdef K_OFF-
55#define KBD_OFF_MODE K_OFF-
56#else-
57#define KBD_OFF_MODE K_RAW-
58#endif-
59-
60#endif-
61-
62QT_BEGIN_NAMESPACE-
63-
64#ifdef VTH_ENABLED-
65static void setTTYCursor(bool enable)-
66{-
67 const char * const devs[] = { "/dev/tty0", "/dev/tty", "/dev/console", 0 };-
68 int fd = -1;-
69 for (const char * const *dev = devs; *dev; ++dev) {
*devDescription
TRUEnever evaluated
FALSEnever evaluated
0
70 fd = QT_OPEN(*dev, O_RDWR);-
71 if (fd != -1) {
fd != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
72 // Enable/disable screen blanking and the blinking cursor.-
73 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
74 QT_WRITE(fd, termctl, strlen(termctl) + 1);-
75 QT_CLOSE(fd);-
76 return;
never executed: return;
0
77 }-
78 }
never executed: end of block
0
79}
never executed: end of block
0
80#endif-
81-
82#ifdef VTH_ENABLED-
83static QFbVtHandler *vth;-
84-
85void QFbVtHandler::signalHandler(int sigNo)-
86{-
87 char a = sigNo;-
88 QT_WRITE(vth->m_sigFd[0], &a, sizeof(a));-
89}
never executed: end of block
0
90#endif-
91-
92QFbVtHandler::QFbVtHandler(QObject *parent)-
93 : QObject(parent),-
94 m_tty(-1),-
95 m_signalNotifier(0)-
96{-
97#ifdef VTH_ENABLED-
98 if (isatty(0))
isatty(0)Description
TRUEnever evaluated
FALSEnever evaluated
0
99 m_tty = 0;
never executed: m_tty = 0;
0
100-
101 if (::socketpair(AF_UNIX, SOCK_STREAM, 0, m_sigFd)) {
::socketpair(1...M, 0, m_sigFd)Description
TRUEnever evaluated
FALSEnever evaluated
0
102 qErrnoWarning(errno, "QFbVtHandler: socketpair() failed");-
103 return;
never executed: return;
0
104 }-
105-
106 vth = this;-
107 setTTYCursor(false);-
108 setKeyboardEnabled(false);-
109-
110 m_signalNotifier = new QSocketNotifier(m_sigFd[1], QSocketNotifier::Read, this);-
111 connect(m_signalNotifier, &QSocketNotifier::activated, this, &QFbVtHandler::handleSignal);-
112-
113 if (!qEnvironmentVariableIntValue("QT_QPA_NO_SIGNAL_HANDLER")) {
!qEnvironmentV...GNAL_HANDLER")Description
TRUEnever evaluated
FALSEnever evaluated
0
114 struct sigaction sa;-
115 sa.sa_flags = 0;-
116 sa.sa_handler = signalHandler;-
117 sigemptyset(&sa.sa_mask);-
118 sigaction(SIGINT, &sa, 0); // Ctrl+C-
119 sigaction(SIGTSTP, &sa, 0); // Ctrl+Z-
120 sigaction(SIGCONT, &sa, 0);-
121 sigaction(SIGTERM, &sa, 0); // default signal used by kill-
122 }
never executed: end of block
0
123#endif-
124}
never executed: end of block
0
125-
126QFbVtHandler::~QFbVtHandler()-
127{-
128#ifdef VTH_ENABLED-
129 setKeyboardEnabled(true);-
130 setTTYCursor(true);-
131-
132 if (m_signalNotifier) {
m_signalNotifierDescription
TRUEnever evaluated
FALSEnever evaluated
0
133 close(m_sigFd[0]);-
134 close(m_sigFd[1]);-
135 }
never executed: end of block
0
136#endif-
137}
never executed: end of block
0
138-
139void QFbVtHandler::setKeyboardEnabled(bool enable)-
140{-
141#ifdef VTH_ENABLED-
142 if (m_tty == -1)
m_tty == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
143 return;
never executed: return;
0
144-
145 if (enable) {
enableDescription
TRUEnever evaluated
FALSEnever evaluated
0
146 ::ioctl(m_tty, KDSKBMUTE, 0);-
147 ::ioctl(m_tty, KDSKBMODE, m_oldKbdMode);-
148 } else {
never executed: end of block
0
149 ::ioctl(m_tty, KDGKBMODE, &m_oldKbdMode);-
150 if (!qEnvironmentVariableIntValue("QT_QPA_ENABLE_TERMINAL_KEYBOARD")) {
!qEnvironmentV...NAL_KEYBOARD")Description
TRUEnever evaluated
FALSEnever evaluated
0
151 ::ioctl(m_tty, KDSKBMUTE, 1);-
152 ::ioctl(m_tty, KDSKBMODE, KBD_OFF_MODE);-
153 }
never executed: end of block
0
154 }
never executed: end of block
0
155#else-
156 Q_UNUSED(enable);-
157#endif-
158}-
159-
160void QFbVtHandler::handleSignal()-
161{-
162#ifdef VTH_ENABLED-
163 m_signalNotifier->setEnabled(false);-
164-
165 char sigNo;-
166 if (QT_READ(m_sigFd[1], &sigNo, sizeof(sigNo)) == sizeof(sigNo)) {
qt_safe_read(m... sizeof(sigNo)Description
TRUEnever evaluated
FALSEnever evaluated
0
167 switch (sigNo) {-
168 case SIGINT: // fallthrough
never executed: case 2:
0
169 case SIGTERM:
never executed: case 15:
0
170 handleInt();-
171 break;
never executed: break;
0
172 case SIGTSTP:
never executed: case 20:
0
173 emit aboutToSuspend();-
174 setKeyboardEnabled(true);-
175 setTTYCursor(true);-
176 ::kill(getpid(), SIGSTOP);-
177 break;
never executed: break;
0
178 case SIGCONT:
never executed: case 18:
0
179 setTTYCursor(false);-
180 setKeyboardEnabled(false);-
181 emit resumed();-
182 break;
never executed: break;
0
183 default:
never executed: default:
0
184 break;
never executed: break;
0
185 }-
186 }-
187-
188 m_signalNotifier->setEnabled(true);-
189#endif-
190}
never executed: end of block
0
191-
192void QFbVtHandler::handleInt()-
193{-
194#ifdef VTH_ENABLED-
195 emit interrupted();-
196 setKeyboardEnabled(true);-
197 setTTYCursor(true);-
198 _exit(1);-
199#endif-
200}
never executed: end of block
0
201-
202QT_END_NAMESPACE-
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