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diff --git a/library/qprocess_unix.cpp b/library/qprocess_unix.cpp
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+/****************************************************************************
+** $Id$
+**
+** 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 "qcleanuphandler_p.h"
+#include "qregexp.h"
+
+#include <stdlib.h>
+
+// ### FOR Qt 2.3 compat
+#include <unistd.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <sys/fcntl.h>
+
+#include <errno.h>
+
+#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<QByteArray> 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<QProc> *procList;
+ int sigchldFd[2];
+};
+
+QCleanupHandler<QProcessManager> qprocess_cleanup_procmanager;
+
+QProcessManager::QProcessManager()
+{
+ procList = new QList<QProc>;
+ 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