From f36c70938c8c2907a1b61637af3bd589262b4b5e Mon Sep 17 00:00:00 2001 From: sandman Date: Tue, 17 Dec 2002 19:16:18 +0000 Subject: replaced the private QProcess copy for the FTP server with the already available libopie/OProcess --- (limited to 'core/launcher/qprocess_unix.cpp') diff --git a/core/launcher/qprocess_unix.cpp b/core/launcher/qprocess_unix.cpp deleted file mode 100644 index 75f0f0c..0000000 --- a/core/launcher/qprocess_unix.cpp +++ b/dev/null @@ -1,1158 +0,0 @@ -/**************************************************************************** -** $Id$ -** -** Implementation of QProcess class for Unix -** -** Created : 20000905 -** -** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. -** -** This file is part of the kernel module of the Qt GUI Toolkit. -** -** This file may be distributed under the terms of the Q Public License -** as defined by Trolltech AS of Norway and appearing in the file -** LICENSE.QPL included in the packaging of this file. -** -** This file may be distributed and/or modified under the terms of the -** GNU General Public License version 2 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. -** -** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition -** licenses may use this file in accordance with the Qt Commercial License -** Agreement provided with the Software. -** -** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE -** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. -** -** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for -** information about Qt Commercial License Agreements. -** See http://www.trolltech.com/qpl/ for QPL licensing information. -** See http://www.trolltech.com/gpl/ for GPL licensing information. -** -** Contact info@trolltech.com if any conditions of this licensing are -** not clear to you. -** -**********************************************************************/ - -//#include "qplatformdefs.h" - -// Solaris redefines connect -> __xnet_connect with _XOPEN_SOURCE_EXTENDED. -#if defined(connect) -#undef connect -#endif - -#include "qprocess.h" - -#ifndef QT_NO_PROCESS - -#include "qapplication.h" -#include "qqueue.h" -#include "qlist.h" -#include "qsocketnotifier.h" -#include "qtimer.h" -#include "qregexp.h" - -#include "qcleanuphandler_p.h" - -#include - -// ### FOR Qt 2.3 compat -#include -#include -#include -#include -#include -#include - -#include - -#ifdef __MIPSEL__ -# ifndef SOCK_DGRAM -# define SOCK_DGRAM 1 -# endif -# ifndef SOCK_STREAM -# define SOCK_STREAM 2 -# endif -#endif - -//#define QT_QPROCESS_DEBUG - - -#ifdef Q_C_CALLBACKS -extern "C" { -#endif // Q_C_CALLBACKS - -#define QT_SIGNAL_RETTYPE void -#define QT_SIGNAL_ARGS int -#define QT_SIGNAL_IGNORE SIG_IGN - - QT_SIGNAL_RETTYPE qt_C_sigchldHnd(QT_SIGNAL_ARGS); - -#ifdef Q_C_CALLBACKS -} -#endif // Q_C_CALLBACKS - - -class QProc; -class QProcessManager; -class QProcessPrivate -{ -public: - QProcessPrivate(); - ~QProcessPrivate(); - - void closeOpenSocketsForChild(); - void newProc( pid_t pid, QProcess *process ); - - QByteArray bufStdout; - QByteArray bufStderr; - - QQueue stdinBuf; - - QSocketNotifier *notifierStdin; - QSocketNotifier *notifierStdout; - QSocketNotifier *notifierStderr; - - ssize_t stdinBufRead; - QProc *proc; - - bool exitValuesCalculated; - bool socketReadCalled; - - static QProcessManager *procManager; -}; - - -/*********************************************************************** - * - * QProc - * - **********************************************************************/ -/* - The class QProcess does not necessarily map exactly to the running - child processes: if the process is finished, the QProcess class may still be - there; furthermore a user can use QProcess to start more than one process. - - The helper-class QProc has the semantics that one instance of this class maps - directly to a running child process. -*/ -class QProc -{ -public: - QProc( pid_t p, QProcess *proc=0 ) : pid(p), process(proc) - { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProc: Constructor for pid %d and QProcess %p", pid, process ); -#endif - socketStdin = 0; - socketStdout = 0; - socketStderr = 0; - } - ~QProc() - { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProc: Destructor for pid %d and QProcess %p", pid, process ); -#endif - if ( process != 0 ) { - if ( process->d->notifierStdin ) - process->d->notifierStdin->setEnabled( FALSE ); - if ( process->d->notifierStdout ) - process->d->notifierStdout->setEnabled( FALSE ); - if ( process->d->notifierStderr ) - process->d->notifierStderr->setEnabled( FALSE ); - process->d->proc = 0; - } - if( socketStdin != 0 ) - ::close( socketStdin ); - // ### close these sockets even on parent exit or is it better only on - // sigchld (but what do I have to do with them on exit then)? - if( socketStdout != 0 ) - ::close( socketStdout ); - if( socketStderr != 0 ) - ::close( socketStderr ); - } - - pid_t pid; - int socketStdin; - int socketStdout; - int socketStderr; - QProcess *process; -}; - -/*********************************************************************** - * - * QProcessManager - * - **********************************************************************/ -class QProcessManager : public QObject -{ - Q_OBJECT - -public: - QProcessManager(); - ~QProcessManager(); - - void append( QProc *p ); - void remove( QProc *p ); - - void cleanup(); - -public slots: - void removeMe(); - void sigchldHnd( int ); - -public: - struct sigaction oldactChld; - struct sigaction oldactPipe; - QList *procList; - int sigchldFd[2]; -}; - -QCleanupHandler qprocess_cleanup_procmanager; - -QProcessManager::QProcessManager() -{ - procList = new QList; - procList->setAutoDelete( TRUE ); - - // The SIGCHLD handler writes to a socket to tell the manager that - // something happened. This is done to get the processing in sync with the - // event reporting. - if ( ::socketpair( AF_UNIX, SOCK_STREAM, 0, sigchldFd ) ) { - sigchldFd[0] = 0; - sigchldFd[1] = 0; - } else { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: install socket notifier (%d)", sigchldFd[1] ); -#endif - QSocketNotifier *sn = new QSocketNotifier( sigchldFd[1], - QSocketNotifier::Read, this ); - connect( sn, SIGNAL(activated(int)), - this, SLOT(sigchldHnd(int)) ); - sn->setEnabled( TRUE ); - } - - // install a SIGCHLD handler and ignore SIGPIPE - struct sigaction act; - -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: install a SIGCHLD handler" ); -#endif - act.sa_handler = qt_C_sigchldHnd; - sigemptyset( &(act.sa_mask) ); - sigaddset( &(act.sa_mask), SIGCHLD ); - act.sa_flags = SA_NOCLDSTOP; -#if defined(SA_RESTART) - act.sa_flags |= SA_RESTART; -#endif - if ( sigaction( SIGCHLD, &act, &oldactChld ) != 0 ) - qWarning( "Error installing SIGCHLD handler" ); - -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: install a SIGPIPE handler (SIG_IGN)" ); -#endif - act.sa_handler = QT_SIGNAL_IGNORE; - sigemptyset( &(act.sa_mask) ); - sigaddset( &(act.sa_mask), SIGPIPE ); - act.sa_flags = 0; - if ( sigaction( SIGPIPE, &act, &oldactPipe ) != 0 ) - qWarning( "Error installing SIGPIPE handler" ); -} - -QProcessManager::~QProcessManager() -{ - delete procList; - - if ( sigchldFd[0] != 0 ) - ::close( sigchldFd[0] ); - if ( sigchldFd[1] != 0 ) - ::close( sigchldFd[1] ); - - // restore SIGCHLD handler -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: restore old sigchild handler" ); -#endif - if ( sigaction( SIGCHLD, &oldactChld, 0 ) != 0 ) - qWarning( "Error restoring SIGCHLD handler" ); - -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: restore old sigpipe handler" ); -#endif - if ( sigaction( SIGPIPE, &oldactPipe, 0 ) != 0 ) - qWarning( "Error restoring SIGPIPE handler" ); -} - -void QProcessManager::append( QProc *p ) -{ - procList->append( p ); -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: append process (procList.count(): %d)", procList->count() ); -#endif -} - -void QProcessManager::remove( QProc *p ) -{ - procList->remove( p ); -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager: remove process (procList.count(): %d)", procList->count() ); -#endif - cleanup(); -} - -void QProcessManager::cleanup() -{ - if ( procList->count() == 0 ) { - QTimer::singleShot( 0, this, SLOT(removeMe()) ); - } -} - -void QProcessManager::removeMe() -{ - if ( procList->count() == 0 ) { - qprocess_cleanup_procmanager.remove( &QProcessPrivate::procManager ); - QProcessPrivate::procManager = 0; - delete this; - } -} - -void QProcessManager::sigchldHnd( int fd ) -{ - char tmp; - ::read( fd, &tmp, sizeof(tmp) ); -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager::sigchldHnd()" ); -#endif - QProc *proc; - QProcess *process; - bool removeProc; - proc = procList->first(); - while ( proc != 0 ) { - removeProc = FALSE; - process = proc->process; - if ( process != 0 ) { - if ( !process->isRunning() ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager::sigchldHnd() (PID: %d): process exited (QProcess available)", proc->pid ); -#endif - // read pending data - int nbytes = 0; - if ( ::ioctl(proc->socketStdout, FIONREAD, (char*)&nbytes)==0 && nbytes>0 ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager::sigchldHnd() (PID: %d): reading %d bytes of pending data on stdout", proc->pid, nbytes ); -#endif - process->socketRead( proc->socketStdout ); - } - nbytes = 0; - if ( ::ioctl(proc->socketStderr, FIONREAD, (char*)&nbytes)==0 && nbytes>0 ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager::sigchldHnd() (PID: %d): reading %d bytes of pending data on stderr", proc->pid, nbytes ); -#endif - process->socketRead( proc->socketStderr ); - } - - if ( process->notifyOnExit ) - emit process->processExited(); - - removeProc = TRUE; - } - } else { - int status; - if ( ::waitpid( proc->pid, &status, WNOHANG ) == proc->pid ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessManager::sigchldHnd() (PID: %d): process exited (QProcess not available)", proc->pid ); -#endif - removeProc = TRUE; - } - } - if ( removeProc ) { - QProc *oldproc = proc; - proc = procList->next(); - remove( oldproc ); - } else { - proc = procList->next(); - } - } -} - -#include "qprocess_unix.moc" - - -/*********************************************************************** - * - * QProcessPrivate - * - **********************************************************************/ -QProcessManager *QProcessPrivate::procManager = 0; - -QProcessPrivate::QProcessPrivate() -{ -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessPrivate: Constructor" ); -#endif - stdinBufRead = 0; - - notifierStdin = 0; - notifierStdout = 0; - notifierStderr = 0; - - exitValuesCalculated = FALSE; - socketReadCalled = FALSE; - - proc = 0; -} - -QProcessPrivate::~QProcessPrivate() -{ -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcessPrivate: Destructor" ); -#endif - - if ( proc != 0 ) { - if ( proc->socketStdin != 0 ) { - ::close( proc->socketStdin ); - proc->socketStdin = 0; - } - proc->process = 0; - } - - while ( !stdinBuf.isEmpty() ) { - delete stdinBuf.dequeue(); - } - delete notifierStdin; - delete notifierStdout; - delete notifierStderr; -} - -/* - Closes all open sockets in the child process that are not needed by the child - process. Otherwise one child may have an open socket on standard input, etc. - of another child. -*/ -void QProcessPrivate::closeOpenSocketsForChild() -{ - if ( procManager != 0 ) { - if ( procManager->sigchldFd[0] != 0 ) - ::close( procManager->sigchldFd[0] ); - if ( procManager->sigchldFd[1] != 0 ) - ::close( procManager->sigchldFd[1] ); - - // close also the sockets from other QProcess instances - QProc *proc; - for ( proc=procManager->procList->first(); proc!=0; proc=procManager->procList->next() ) { - ::close( proc->socketStdin ); - ::close( proc->socketStdout ); - ::close( proc->socketStderr ); - } - } -} - -void QProcessPrivate::newProc( pid_t pid, QProcess *process ) -{ - proc = new QProc( pid, process ); - if ( procManager == 0 ) { - procManager = new QProcessManager; - qprocess_cleanup_procmanager.add( &procManager ); - } - // the QProcessManager takes care of deleting the QProc instances - procManager->append( proc ); -} - -/*********************************************************************** - * - * sigchld handler callback - * - **********************************************************************/ -QT_SIGNAL_RETTYPE qt_C_sigchldHnd( QT_SIGNAL_ARGS ) -{ - if ( QProcessPrivate::procManager == 0 ) - return; - if ( QProcessPrivate::procManager->sigchldFd[0] == 0 ) - return; - - char a = 1; - ::write( QProcessPrivate::procManager->sigchldFd[0], &a, sizeof(a) ); -} - - -/*********************************************************************** - * - * QProcess - * - **********************************************************************/ -/*! - This private class does basic initialization. -*/ -void QProcess::init() -{ - d = new QProcessPrivate(); - exitStat = 0; - exitNormal = FALSE; -} - -/*! - This private class resets the process variables, etc. so that it can be used - for another process to start. -*/ -void QProcess::reset() -{ - delete d; - d = new QProcessPrivate(); - exitStat = 0; - exitNormal = FALSE; - d->bufStdout.resize( 0 ); - d->bufStderr.resize( 0 ); -} - -QByteArray* QProcess::bufStdout() -{ - if ( d->proc && d->proc->socketStdout ) { - // ### can this cause a blocking behaviour (maybe do a ioctl() to see - // if data is available)? - socketRead( d->proc->socketStdout ); - } - return &d->bufStdout; -} - -QByteArray* QProcess::bufStderr() -{ - if ( d->proc && d->proc->socketStderr ) { - // ### can this cause a blocking behaviour (maybe do a ioctl() to see - // if data is available)? - socketRead( d->proc->socketStderr ); - } - return &d->bufStderr; -} - -void QProcess::consumeBufStdout( int consume ) -{ - uint n = d->bufStdout.size(); - if ( consume==-1 || (uint)consume >= n ) { - d->bufStdout.resize( 0 ); - } else { - QByteArray tmp( n - consume ); - memcpy( tmp.data(), d->bufStdout.data()+consume, n-consume ); - d->bufStdout = tmp; - } -} - -void QProcess::consumeBufStderr( int consume ) -{ - uint n = d->bufStderr.size(); - if ( consume==-1 || (uint)consume >= n ) { - d->bufStderr.resize( 0 ); - } else { - QByteArray tmp( n - consume ); - memcpy( tmp.data(), d->bufStderr.data()+consume, n-consume ); - d->bufStderr = tmp; - } -} - -/*! - Destroys the class. - - If the process is running, it is NOT terminated! Standard input, standard - output and standard error of the process are closed. - - You can connect the destroyed() signal to the kill() slot, if you want the - process to be terminated automatically when the class is destroyed. - - \sa tryTerminate() kill() -*/ -QProcess::~QProcess() -{ - delete d; -} - -/*! - Tries to run a process for the command and arguments that were specified with - setArguments(), addArgument() or that were specified in the constructor. The - command is searched in the path for executable programs; you can also use an - absolute path to the command. - - If \a env is null, then the process is started with the same environment as - the starting process. If \a env is non-null, then the values in the - stringlist are interpreted as environment setttings of the form \c - {key=value} and the process is started in these environment settings. For - convenience, there is a small exception to this rule: under Unix, if \a env - does not contain any settings for the environment variable \c - LD_LIBRARY_PATH, then this variable is inherited from the starting process; - under Windows the same applies for the enverionment varialbe \c PATH. - - Returns TRUE if the process could be started, otherwise FALSE. - - You can write data to standard input of the process with - writeToStdin(), you can close standard input with closeStdin() and you can - terminate the process tryTerminate() resp. kill(). - - You can call this function even when there already is a running - process in this object. In this case, QProcess closes standard input - of the old process and deletes pending data, i.e., you loose all - control over that process, but the process is not terminated. This applies - also if the process could not be started. (On operating systems that have - zombie processes, Qt will also wait() on the old process.) - - \sa launch() closeStdin() -*/ -bool QProcess::start( QStringList *env ) -{ -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::start()" ); -#endif - reset(); - - int sStdin[2]; - int sStdout[2]; - int sStderr[2]; - - // open sockets for piping - if ( (comms & Stdin) && ::socketpair( AF_UNIX, SOCK_STREAM, 0, sStdin ) == -1 ) { - return FALSE; - } - if ( (comms & Stderr) && ::socketpair( AF_UNIX, SOCK_STREAM, 0, sStderr ) == -1 ) { - return FALSE; - } - if ( (comms & Stdout) && ::socketpair( AF_UNIX, SOCK_STREAM, 0, sStdout ) == -1 ) { - return FALSE; - } - - // the following pipe is only used to determine if the process could be - // started - int fd[2]; - if ( pipe( fd ) < 0 ) { - // non critical error, go on - fd[0] = 0; - fd[1] = 0; - } - - // construct the arguments for exec - QCString *arglistQ = new QCString[ _arguments.count() + 1 ]; - const char** arglist = new const char*[ _arguments.count() + 1 ]; - int i = 0; - for ( QStringList::Iterator it = _arguments.begin(); it != _arguments.end(); ++it ) { - arglistQ[i] = (*it).local8Bit(); - arglist[i] = arglistQ[i]; -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::start(): arg %d = %s", i, arglist[i] ); -#endif - i++; - } - arglist[i] = 0; - - // Must make sure signal handlers are installed before exec'ing - // in case the process exits quickly. - if ( d->procManager == 0 ) { - d->procManager = new QProcessManager; - qprocess_cleanup_procmanager.add( &d->procManager ); - } - - // fork and exec - QApplication::flushX(); - pid_t pid = fork(); - if ( pid == 0 ) { - // child - d->closeOpenSocketsForChild(); - if ( comms & Stdin ) { - ::close( sStdin[1] ); - ::dup2( sStdin[0], STDIN_FILENO ); - } - if ( comms & Stdout ) { - ::close( sStdout[0] ); - ::dup2( sStdout[1], STDOUT_FILENO ); - } - if ( comms & Stderr ) { - ::close( sStderr[0] ); - ::dup2( sStderr[1], STDERR_FILENO ); - } - if ( comms & DupStderr ) { - ::dup2( STDOUT_FILENO, STDERR_FILENO ); - } -#ifndef QT_NO_DIR - ::chdir( workingDir.absPath().latin1() ); -#endif - if ( fd[0] ) - ::close( fd[0] ); - if ( fd[1] ) - ::fcntl( fd[1], F_SETFD, FD_CLOEXEC ); // close on exec shows sucess - - if ( env == 0 ) { // inherit environment and start process - ::execvp( arglist[0], (char*const*)arglist ); // ### cast not nice - } else { // start process with environment settins as specified in env - // construct the environment for exec - int numEntries = env->count(); - bool setLibraryPath = - env->grep( QRegExp( "^LD_LIBRARY_PATH=" ) ).isEmpty() && - getenv( "LD_LIBRARY_PATH" ) != 0; - if ( setLibraryPath ) - numEntries++; - QCString *envlistQ = new QCString[ numEntries + 1 ]; - const char** envlist = new const char*[ numEntries + 1 ]; - int i = 0; - if ( setLibraryPath ) { - envlistQ[i] = QString( "LD_LIBRARY_PATH=%1" ).arg( getenv( "LD_LIBRARY_PATH" ) ).local8Bit(); - envlist[i] = envlistQ[i]; - i++; - } - for ( QStringList::Iterator it = env->begin(); it != env->end(); ++it ) { - envlistQ[i] = (*it).local8Bit(); - envlist[i] = envlistQ[i]; - i++; - } - envlist[i] = 0; - - // look for the executable in the search path - if ( _arguments.count()>0 && getenv("PATH")!=0 ) { - QString command = _arguments[0]; - if ( !command.contains( '/' ) ) { - QStringList pathList = QStringList::split( ':', getenv( "PATH" ) ); - for (QStringList::Iterator it = pathList.begin(); it != pathList.end(); ++it ) { - QString dir = *it; -#ifdef Q_OS_MACX - if(QFile::exists(dir + "/" + command + ".app")) //look in a bundle - dir += "/" + command + ".app/Contents/MacOS"; -#endif -#ifndef QT_NO_DIR - QFileInfo fileInfo( dir, command ); -#else - QFileInfo fileInfo( dir + "/" + command ); -#endif - if ( fileInfo.isExecutable() ) { - arglistQ[0] = fileInfo.filePath().local8Bit(); - arglist[0] = arglistQ[0]; - break; - } - } - } - } - ::execve( arglist[0], (char*const*)arglist, (char*const*)envlist ); // ### casts not nice - } - if ( fd[1] ) { - char buf = 0; - ::write( fd[1], &buf, 1 ); - ::close( fd[1] ); - } - ::exit( -1 ); - } else if ( pid == -1 ) { - // error forking - goto error; - } - - // test if exec was successful - if ( fd[1] ) - ::close( fd[1] ); - if ( fd[0] ) { - char buf; - for ( ;; ) { - int n = ::read( fd[0], &buf, 1 ); - if ( n==1 ) { - // socket was not closed => error - d->proc = 0; - goto error; - } else if ( n==-1 ) { - if ( errno==EAGAIN || errno==EINTR ) - // try it again - continue; - } - break; - } - ::close( fd[0] ); - } - - d->newProc( pid, this ); - - if ( comms & Stdin ) { - ::close( sStdin[0] ); - d->proc->socketStdin = sStdin[1]; - d->notifierStdin = new QSocketNotifier( sStdin[1], QSocketNotifier::Write ); - connect( d->notifierStdin, SIGNAL(activated(int)), - this, SLOT(socketWrite(int)) ); - // setup notifiers for the sockets - if ( !d->stdinBuf.isEmpty() ) { - d->notifierStdin->setEnabled( TRUE ); - } - } - if ( comms & Stdout ) { - ::close( sStdout[1] ); - d->proc->socketStdout = sStdout[0]; - d->notifierStdout = new QSocketNotifier( sStdout[0], QSocketNotifier::Read ); - connect( d->notifierStdout, SIGNAL(activated(int)), - this, SLOT(socketRead(int)) ); - if ( ioRedirection ) - d->notifierStdout->setEnabled( TRUE ); - } - if ( comms & Stderr ) { - ::close( sStderr[1] ); - d->proc->socketStderr = sStderr[0]; - d->notifierStderr = new QSocketNotifier( sStderr[0], QSocketNotifier::Read ); - connect( d->notifierStderr, SIGNAL(activated(int)), - this, SLOT(socketRead(int)) ); - if ( ioRedirection ) - d->notifierStderr->setEnabled( TRUE ); - } - - // cleanup and return - delete[] arglistQ; - delete[] arglist; - return TRUE; - -error: -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::start(): error starting process" ); -#endif - if ( d->procManager ) - d->procManager->cleanup(); - if ( comms & Stdin ) { - ::close( sStdin[1] ); - ::close( sStdin[0] ); - } - if ( comms & Stdout ) { - ::close( sStdout[0] ); - ::close( sStdout[1] ); - } - if ( comms & Stderr ) { - ::close( sStderr[0] ); - ::close( sStderr[1] ); - } - ::close( fd[0] ); - ::close( fd[1] ); - delete[] arglistQ; - delete[] arglist; - return FALSE; -} - - -/*! - Asks the process to terminate. Processes can ignore this wish. If you want to - be sure that the process really terminates, you must use kill() instead. - - The slot returns immediately: it does not wait until the process has - finished. When the process really exited, the signal processExited() is - emitted. - - \sa kill() processExited() -*/ -void QProcess::tryTerminate() const -{ - if ( d->proc != 0 ) - ::kill( d->proc->pid, SIGTERM ); -} - -/*! - Terminates the process. This is not a safe way to end a process since the - process will not be able to do cleanup. tryTerminate() is a safer way to do - it, but processes might ignore a tryTerminate(). - - The nice way to end a process and to be sure that it is finished, is doing - something like this: - \code - process->tryTerminate(); - QTimer::singleShot( 5000, process, SLOT( kill() ) ); - \endcode - - This tries to terminate the process the nice way. If the process is still - running after 5 seconds, it terminates the process the hard way. The timeout - should be chosen depending on the time the process needs to do all the - cleanup: use a higher value if the process is likely to do heavy computation - on cleanup. - - The slot returns immediately: it does not wait until the process has - finished. When the process really exited, the signal processExited() is - emitted. - - \sa tryTerminate() processExited() -*/ -void QProcess::kill() const -{ - if ( d->proc != 0 ) - ::kill( d->proc->pid, SIGKILL ); -} - -/*! - Returns TRUE if the process is running, otherwise FALSE. - - \sa normalExit() exitStatus() processExited() -*/ -bool QProcess::isRunning() const -{ - if ( d->exitValuesCalculated ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::isRunning(): FALSE (already computed)" ); -#endif - return FALSE; - } - if ( d->proc == 0 ) - return FALSE; - int status; - if ( ::waitpid( d->proc->pid, &status, WNOHANG ) == d->proc->pid ) - { - // compute the exit values - QProcess *that = (QProcess*)this; // mutable - that->exitNormal = WIFEXITED( status ) != 0; - if ( exitNormal ) { - that->exitStat = (char)WEXITSTATUS( status ); - } - d->exitValuesCalculated = TRUE; -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::isRunning() (PID: %d): FALSE", d->proc->pid ); -#endif - return FALSE; - } -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::isRunning() (PID: %d): TRUE", d->proc->pid ); -#endif - return TRUE; -} - -/*! - Writes the data \a buf to the standard input of the process. The process may - or may not read this data. - - This function returns immediately; the QProcess class might write the data at - a later point (you have to enter the event loop for that). When all the data - is written to the process, the signal wroteToStdin() is emitted. This does - not mean that the process really read the data, since this class only detects - when it was able to write the data to the operating system. - - \sa wroteToStdin() closeStdin() readStdout() readStderr() -*/ -void QProcess::writeToStdin( const QByteArray& buf ) -{ -#if defined(QT_QPROCESS_DEBUG) -// qDebug( "QProcess::writeToStdin(): write to stdin (%d)", d->socketStdin ); -#endif - d->stdinBuf.enqueue( new QByteArray(buf) ); - if ( d->notifierStdin != 0 ) - d->notifierStdin->setEnabled( TRUE ); -} - - -/*! - Closes standard input of the process. - - This function also deletes pending data that is not written to standard input - yet. - - \sa wroteToStdin() -*/ -void QProcess::closeStdin() -{ - if ( d->proc == 0 ) - return; - if ( d->proc->socketStdin !=0 ) { - while ( !d->stdinBuf.isEmpty() ) { - delete d->stdinBuf.dequeue(); - } - delete d->notifierStdin; - d->notifierStdin = 0; - if ( ::close( d->proc->socketStdin ) != 0 ) { - qWarning( "Could not close stdin of child process" ); - } -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::closeStdin(): stdin (%d) closed", d->proc->socketStdin ); -#endif - d->proc->socketStdin = 0; - } -} - - -/* - This private slot is called when the process has outputted data to either - standard output or standard error. -*/ -void QProcess::socketRead( int fd ) -{ - if ( d->socketReadCalled ) { - // the slots that are connected to the readyRead...() signals might - // trigger a recursive call of socketRead(). Avoid this since you get a - // blocking read otherwise. - return; - } -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::socketRead(): %d", fd ); -#endif - if ( fd == 0 ) - return; - const int bufsize = 4096; - QByteArray *buffer = 0; - uint oldSize; - int n; - if ( fd == d->proc->socketStdout ) { - buffer = &d->bufStdout; - } else if ( fd == d->proc->socketStderr ) { - buffer = &d->bufStderr; - } else { - // this case should never happen, but just to be safe - return; - } - - // read data - oldSize = buffer->size(); - buffer->resize( oldSize + bufsize ); - n = ::read( fd, buffer->data()+oldSize, bufsize ); - if ( n > 0 ) - buffer->resize( oldSize + n ); - else - buffer->resize( oldSize ); - // eof or error? - if ( n == 0 || n == -1 ) { - if ( fd == d->proc->socketStdout ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::socketRead(): stdout (%d) closed", fd ); -#endif - d->notifierStdout->setEnabled( FALSE ); - delete d->notifierStdout; - d->notifierStdout = 0; - ::close( d->proc->socketStdout ); - d->proc->socketStdout = 0; - return; - } else if ( fd == d->proc->socketStderr ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::socketRead(): stderr (%d) closed", fd ); -#endif - d->notifierStderr->setEnabled( FALSE ); - delete d->notifierStderr; - d->notifierStderr = 0; - ::close( d->proc->socketStderr ); - d->proc->socketStderr = 0; - return; - } - } - // read all data that is available - while ( n == bufsize ) { - oldSize = buffer->size(); - buffer->resize( oldSize + bufsize ); - n = ::read( fd, buffer->data()+oldSize, bufsize ); - if ( n > 0 ) - buffer->resize( oldSize + n ); - else - buffer->resize( oldSize ); - } - - d->socketReadCalled = TRUE; - if ( fd == d->proc->socketStdout ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::socketRead(): %d bytes read from stdout (%d)", - buffer->size()-oldSize, fd ); -#endif - emit readyReadStdout(); - } else if ( fd == d->proc->socketStderr ) { -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::socketRead(): %d bytes read from stderr (%d)", - buffer->size()-oldSize, fd ); -#endif - emit readyReadStderr(); - } - d->socketReadCalled = FALSE; -} - - -/* - This private slot is called when the process tries to read data from standard - input. -*/ -void QProcess::socketWrite( int fd ) -{ - if ( fd != d->proc->socketStdin || d->proc->socketStdin == 0 ) - return; - if ( d->stdinBuf.isEmpty() ) { - d->notifierStdin->setEnabled( FALSE ); - return; - } -#if defined(QT_QPROCESS_DEBUG) - qDebug( "QProcess::socketWrite(): write to stdin (%d)", fd ); -#endif - ssize_t ret = ::write( fd, - d->stdinBuf.head()->data() + d->stdinBufRead, - d->stdinBuf.head()->size() - d->stdinBufRead ); - if ( ret > 0 ) - d->stdinBufRead += ret; - if ( d->stdinBufRead == (ssize_t)d->stdinBuf.head()->size() ) { - d->stdinBufRead = 0; - delete d->stdinBuf.dequeue(); - if ( wroteToStdinConnected && d->stdinBuf.isEmpty() ) - emit wroteToStdin(); - socketWrite( fd ); - } -} - -/*! - \internal - Flushes standard input. This is useful if you want to use QProcess in a - synchronous manner. - - This function should probably go into the public API. -*/ -void QProcess::flushStdin() -{ - socketWrite( d->proc->socketStdin ); -} - -/* - This private slot is only used under Windows (but moc does not know about #if - defined()). -*/ -void QProcess::timeout() -{ -} - - -/* - This private function is used by connectNotify() and disconnectNotify() to - change the value of ioRedirection (and related behaviour) -*/ -void QProcess::setIoRedirection( bool value ) -{ - ioRedirection = value; - if ( ioRedirection ) { - if ( d->notifierStdout ) - d->notifierStdout->setEnabled( TRUE ); - if ( d->notifierStderr ) - d->notifierStderr->setEnabled( TRUE ); - } else { - if ( d->notifierStdout ) - d->notifierStdout->setEnabled( FALSE ); - if ( d->notifierStderr ) - d->notifierStderr->setEnabled( FALSE ); - } -} - -/* - This private function is used by connectNotify() and - disconnectNotify() to change the value of notifyOnExit (and related - behaviour) -*/ -void QProcess::setNotifyOnExit( bool value ) -{ - notifyOnExit = value; -} - -/* - This private function is used by connectNotify() and disconnectNotify() to - change the value of wroteToStdinConnected (and related behaviour) -*/ -void QProcess::setWroteStdinConnected( bool value ) -{ - wroteToStdinConnected = value; -} - -/*! \enum QProcess::PID - \internal -*/ -/*! - Returns platform dependent information about the process. This can be used - together with platform specific system calls. - - Under Unix the return value is the PID of the process, or -1 if no process is - belonging to this object. - - Under Windows it is a pointer to the \c PROCESS_INFORMATION struct, or 0 if - no process is belonging to this object. -*/ -QProcess::PID QProcess::processIdentifier() -{ - if ( d->proc == 0 ) - return -1; - return d->proc->pid; -} - -#endif // QT_NO_PROCESS -- cgit v0.9.0.2