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Diffstat (limited to 'kdecore/kprocess.cpp')
| -rw-r--r-- | kdecore/kprocess.cpp | 1137 |
1 files changed, 1137 insertions, 0 deletions
diff --git a/kdecore/kprocess.cpp b/kdecore/kprocess.cpp new file mode 100644 index 000000000..286790bcb --- /dev/null +++ b/kdecore/kprocess.cpp @@ -0,0 +1,1137 @@ +/* + + $Id$ + + This file is part of the KDE libraries + Copyright (C) 1997 Christian Czezatke (e9025461@student.tuwien.ac.at) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + + +#include "kprocess.h" +#include "kprocctrl.h" +#include "kpty.h" + +#include <config.h> + +#ifdef __sgi +#define __svr4__ +#endif + +#ifdef __osf__ +#define _OSF_SOURCE +#include <float.h> +#endif + +#ifdef _AIX +#define _ALL_SOURCE +#endif + +#ifdef Q_OS_UNIX +#include <sys/socket.h> +#include <sys/ioctl.h> +#endif + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#ifdef HAVE_SYS_STROPTS_H +#include <sys/stropts.h> // Defines I_PUSH +#define _NEW_TTY_CTRL +#endif +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif + +#include <errno.h> +#include <assert.h> +#include <fcntl.h> +#include <time.h> +#include <stdlib.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <pwd.h> +#include <grp.h> + +#include <qfile.h> +#include <qsocketnotifier.h> +#include <qapplication.h> + +#include <kdebug.h> +#include <kstandarddirs.h> +#include <kuser.h> + + +////////////////// +// private data // +////////////////// + +class KProcessPrivate { +public: + KProcessPrivate() : + usePty(KProcess::NoCommunication), + addUtmp(false), useShell(false), +#ifdef Q_OS_UNIX + pty(0), +#endif + priority(0) + { + } + + KProcess::Communication usePty; + bool addUtmp : 1; + bool useShell : 1; + +#ifdef Q_OS_UNIX + KPty *pty; +#endif + + int priority; + + QMap<QString,QString> env; + QString wd; + QCString shell; + QCString executable; +}; + +///////////////////////////// +// public member functions // +///////////////////////////// + +KProcess::KProcess( QObject* parent, const char *name ) + : QObject( parent, name ), + run_mode(NotifyOnExit), + runs(false), + pid_(0), + status(0), + keepPrivs(false), + innot(0), + outnot(0), + errnot(0), + communication(NoCommunication), + input_data(0), + input_sent(0), + input_total(0) +{ + KProcessController::ref(); + KProcessController::theKProcessController->addKProcess(this); + + d = new KProcessPrivate; + + out[0] = out[1] = -1; + in[0] = in[1] = -1; + err[0] = err[1] = -1; +} + +KProcess::KProcess() + : QObject(), + run_mode(NotifyOnExit), + runs(false), + pid_(0), + status(0), + keepPrivs(false), + innot(0), + outnot(0), + errnot(0), + communication(NoCommunication), + input_data(0), + input_sent(0), + input_total(0) +{ + KProcessController::ref(); + KProcessController::theKProcessController->addKProcess(this); + + d = new KProcessPrivate; + + out[0] = out[1] = -1; + in[0] = in[1] = -1; + err[0] = err[1] = -1; +} + +void +KProcess::setEnvironment(const QString &name, const QString &value) +{ + d->env.insert(name, value); +} + +void +KProcess::setWorkingDirectory(const QString &dir) +{ + d->wd = dir; +} + +void +KProcess::setupEnvironment() +{ + QMap<QString,QString>::Iterator it; + for(it = d->env.begin(); it != d->env.end(); ++it) + { + setenv(QFile::encodeName(it.key()).data(), + QFile::encodeName(it.data()).data(), 1); + } + if (!d->wd.isEmpty()) + { + chdir(QFile::encodeName(d->wd).data()); + } +} + +void +KProcess::setRunPrivileged(bool keepPrivileges) +{ + keepPrivs = keepPrivileges; +} + +bool +KProcess::runPrivileged() const +{ + return keepPrivs; +} + +bool +KProcess::setPriority(int prio) +{ +#ifdef Q_OS_UNIX + if (runs) { + if (setpriority(PRIO_PROCESS, pid_, prio)) + return false; + } else { + if (prio > 19 || prio < (geteuid() ? getpriority(PRIO_PROCESS, 0) : -20)) + return false; + } +#endif + d->priority = prio; + return true; +} + +KProcess::~KProcess() +{ + if (run_mode != DontCare) + kill(SIGKILL); + detach(); + +#ifdef Q_OS_UNIX + delete d->pty; +#endif + delete d; + + KProcessController::theKProcessController->removeKProcess(this); + KProcessController::deref(); +} + +void KProcess::detach() +{ + if (runs) { + KProcessController::theKProcessController->addProcess(pid_); + runs = false; + pid_ = 0; // close without draining + commClose(); // Clean up open fd's and socket notifiers. + } +} + +void KProcess::setBinaryExecutable(const char *filename) +{ + d->executable = filename; +} + +bool KProcess::setExecutable(const QString& proc) +{ + if (runs) return false; + + if (proc.isEmpty()) return false; + + if (!arguments.isEmpty()) + arguments.remove(arguments.begin()); + arguments.prepend(QFile::encodeName(proc)); + + return true; +} + +KProcess &KProcess::operator<<(const QStringList& args) +{ + QStringList::ConstIterator it = args.begin(); + for ( ; it != args.end() ; ++it ) + arguments.append(QFile::encodeName(*it)); + return *this; +} + +KProcess &KProcess::operator<<(const QCString& arg) +{ + return operator<< (arg.data()); +} + +KProcess &KProcess::operator<<(const char* arg) +{ + arguments.append(arg); + return *this; +} + +KProcess &KProcess::operator<<(const QString& arg) +{ + arguments.append(QFile::encodeName(arg)); + return *this; +} + +void KProcess::clearArguments() +{ + arguments.clear(); +} + +bool KProcess::start(RunMode runmode, Communication comm) +{ + if (runs) { + kdDebug(175) << "Attempted to start an already running process" << endl; + return false; + } + + uint n = arguments.count(); + if (n == 0) { + kdDebug(175) << "Attempted to start a process without arguments" << endl; + return false; + } +#ifdef Q_OS_UNIX + char **arglist; + QCString shellCmd; + if (d->useShell) + { + if (d->shell.isEmpty()) { + kdDebug(175) << "Invalid shell specified" << endl; + return false; + } + + for (uint i = 0; i < n; i++) { + shellCmd += arguments[i]; + shellCmd += " "; // CC: to separate the arguments + } + + arglist = static_cast<char **>(malloc( 4 * sizeof(char *))); + arglist[0] = d->shell.data(); + arglist[1] = (char *) "-c"; + arglist[2] = shellCmd.data(); + arglist[3] = 0; + } + else + { + arglist = static_cast<char **>(malloc( (n + 1) * sizeof(char *))); + for (uint i = 0; i < n; i++) + arglist[i] = arguments[i].data(); + arglist[n] = 0; + } + + run_mode = runmode; + + if (!setupCommunication(comm)) + { + kdDebug(175) << "Could not setup Communication!" << endl; + free(arglist); + return false; + } + + // We do this in the parent because if we do it in the child process + // gdb gets confused when the application runs from gdb. +#ifdef HAVE_INITGROUPS + struct passwd *pw = geteuid() ? 0 : getpwuid(getuid()); +#endif + + int fd[2]; + if (pipe(fd)) + fd[0] = fd[1] = -1; // Pipe failed.. continue + + // we don't use vfork() because + // - it has unclear semantics and is not standardized + // - we do way too much magic in the child + pid_ = fork(); + if (pid_ == 0) { + // The child process + + close(fd[0]); + // Closing of fd[1] indicates that the execvp() succeeded! + fcntl(fd[1], F_SETFD, FD_CLOEXEC); + + if (!commSetupDoneC()) + kdDebug(175) << "Could not finish comm setup in child!" << endl; + + // reset all signal handlers + struct sigaction act; + sigemptyset(&act.sa_mask); + act.sa_handler = SIG_DFL; + act.sa_flags = 0; + for (int sig = 1; sig < NSIG; sig++) + sigaction(sig, &act, 0L); + + if (d->priority) + setpriority(PRIO_PROCESS, 0, d->priority); + + if (!runPrivileged()) + { + setgid(getgid()); +#ifdef HAVE_INITGROUPS + if (pw) + initgroups(pw->pw_name, pw->pw_gid); +#endif + if (geteuid() != getuid()) + setuid(getuid()); + if (geteuid() != getuid()) + _exit(1); + } + + setupEnvironment(); + + if (runmode == DontCare || runmode == OwnGroup) + setsid(); + + const char *executable = arglist[0]; + if (!d->executable.isEmpty()) + executable = d->executable.data(); + execvp(executable, arglist); + + char resultByte = 1; + write(fd[1], &resultByte, 1); + _exit(-1); + } else if (pid_ == -1) { + // forking failed + + // commAbort(); + pid_ = 0; + free(arglist); + return false; + } + // the parent continues here + free(arglist); + + if (!commSetupDoneP()) + kdDebug(175) << "Could not finish comm setup in parent!" << endl; + + // Check whether client could be started. + close(fd[1]); + for(;;) + { + char resultByte; + int n = ::read(fd[0], &resultByte, 1); + if (n == 1) + { + // exec() failed + close(fd[0]); + waitpid(pid_, 0, 0); + pid_ = 0; + commClose(); + return false; + } + if (n == -1) + { + if (errno == EINTR) + continue; // Ignore + } + break; // success + } + close(fd[0]); + + runs = true; + switch (runmode) + { + case Block: + for (;;) + { + commClose(); // drain only, unless obsolete reimplementation + if (!runs) + { + // commClose detected data on the process exit notifification pipe + KProcessController::theKProcessController->unscheduleCheck(); + if (waitpid(pid_, &status, WNOHANG) != 0) // error finishes, too + { + commClose(); // this time for real (runs is false) + KProcessController::theKProcessController->rescheduleCheck(); + break; + } + runs = true; // for next commClose() iteration + } + else + { + // commClose is an obsolete reimplementation and waited until + // all output channels were closed (or it was interrupted). + // there is a chance that it never gets here ... + waitpid(pid_, &status, 0); + runs = false; + break; + } + } + // why do we do this? i think this signal should be emitted _only_ + // after the process has successfully run _asynchronously_ --ossi + emit processExited(this); + break; + default: // NotifyOnExit & OwnGroup + input_data = 0; // Discard any data for stdin that might still be there + break; + } + return true; +#else + //TODO + return false; +#endif +} + + + +bool KProcess::kill(int signo) +{ +#ifdef Q_OS_UNIX + if (runs && pid_ > 0 && !::kill(run_mode == OwnGroup ? -pid_ : pid_, signo)) + return true; +#endif + return false; +} + + + +bool KProcess::isRunning() const +{ + return runs; +} + + + +pid_t KProcess::pid() const +{ + return pid_; +} + +#ifndef timersub +# define timersub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((result)->tv_usec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_usec += 1000000; \ + } \ + } while (0) +#endif + +bool KProcess::wait(int timeout) +{ + if (!runs) + return true; + +#ifndef __linux__ + struct timeval etv; +#endif + struct timeval tv, *tvp; + if (timeout < 0) + tvp = 0; + else + { +#ifndef __linux__ + gettimeofday(&etv, 0); + etv.tv_sec += timeout; +#else + tv.tv_sec = timeout; + tv.tv_usec = 0; +#endif + tvp = &tv; + } + +#ifdef Q_OS_UNIX + int fd = KProcessController::theKProcessController->notifierFd(); + for(;;) + { + fd_set fds; + FD_ZERO( &fds ); + FD_SET( fd, &fds ); + +#ifndef __linux__ + if (tvp) + { + gettimeofday(&tv, 0); + timersub(&etv, &tv, &tv); + if (tv.tv_sec < 0) + tv.tv_sec = tv.tv_usec = 0; + } +#endif + + switch( select( fd+1, &fds, 0, 0, tvp ) ) + { + case -1: + if( errno == EINTR ) + break; + // fall through; should happen if tvp->tv_sec < 0 + case 0: + KProcessController::theKProcessController->rescheduleCheck(); + return false; + default: + KProcessController::theKProcessController->unscheduleCheck(); + if (waitpid(pid_, &status, WNOHANG) != 0) // error finishes, too + { + processHasExited(status); + KProcessController::theKProcessController->rescheduleCheck(); + return true; + } + } + } +#endif //Q_OS_UNIX + return false; +} + + + +bool KProcess::normalExit() const +{ + return (pid_ != 0) && !runs && WIFEXITED(status); +} + + +bool KProcess::signalled() const +{ + return (pid_ != 0) && !runs && WIFSIGNALED(status); +} + + +bool KProcess::coreDumped() const +{ +#ifdef WCOREDUMP + return signalled() && WCOREDUMP(status); +#else + return false; +#endif +} + + +int KProcess::exitStatus() const +{ + return WEXITSTATUS(status); +} + + +int KProcess::exitSignal() const +{ + return WTERMSIG(status); +} + + +bool KProcess::writeStdin(const char *buffer, int buflen) +{ + // if there is still data pending, writing new data + // to stdout is not allowed (since it could also confuse + // kprocess ...) + if (input_data != 0) + return false; + + if (communication & Stdin) { + input_data = buffer; + input_sent = 0; + input_total = buflen; + innot->setEnabled(true); + if (input_total) + slotSendData(0); + return true; + } else + return false; +} + +void KProcess::suspend() +{ + if (outnot) + outnot->setEnabled(false); +} + +void KProcess::resume() +{ + if (outnot) + outnot->setEnabled(true); +} + +bool KProcess::closeStdin() +{ + if (communication & Stdin) { + communication = (Communication) (communication & ~Stdin); + delete innot; + innot = 0; + if (!(d->usePty & Stdin)) + close(in[1]); + in[1] = -1; + return true; + } else + return false; +} + +bool KProcess::closeStdout() +{ + if (communication & Stdout) { + communication = (Communication) (communication & ~Stdout); + delete outnot; + outnot = 0; + if (!(d->usePty & Stdout)) + close(out[0]); + out[0] = -1; + return true; + } else + return false; +} + +bool KProcess::closeStderr() +{ + if (communication & Stderr) { + communication = (Communication) (communication & ~Stderr); + delete errnot; + errnot = 0; + if (!(d->usePty & Stderr)) + close(err[0]); + err[0] = -1; + return true; + } else + return false; +} + +bool KProcess::closePty() +{ +#ifdef Q_OS_UNIX + if (d->pty && d->pty->masterFd() >= 0) { + if (d->addUtmp) + d->pty->logout(); + d->pty->close(); + return true; + } else + return false; +#else + return false; +#endif +} + +void KProcess::closeAll() +{ + closeStdin(); + closeStdout(); + closeStderr(); + closePty(); +} + +///////////////////////////// +// protected slots // +///////////////////////////// + + + +void KProcess::slotChildOutput(int fdno) +{ + if (!childOutput(fdno)) + closeStdout(); +} + + +void KProcess::slotChildError(int fdno) +{ + if (!childError(fdno)) + closeStderr(); +} + + +void KProcess::slotSendData(int) +{ + if (input_sent == input_total) { + innot->setEnabled(false); + input_data = 0; + emit wroteStdin(this); + } else { + int result = ::write(in[1], input_data+input_sent, input_total-input_sent); + if (result >= 0) + { + input_sent += result; + } + else if ((errno != EAGAIN) && (errno != EINTR)) + { + kdDebug(175) << "Error writing to stdin of child process" << endl; + closeStdin(); + } + } +} + +void KProcess::setUseShell(bool useShell, const char *shell) +{ + d->useShell = useShell; + if (shell && *shell) + d->shell = shell; + else +// #ifdef NON_FREE // ... as they ship non-POSIX /bin/sh +#if !defined(__linux__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(__GNU__) && !defined(__DragonFly__) + // Solaris POSIX ... + if (!access( "/usr/xpg4/bin/sh", X_OK )) + d->shell = "/usr/xpg4/bin/sh"; + else + // ... which links here anyway + if (!access( "/bin/ksh", X_OK )) + d->shell = "/bin/ksh"; + else + // dunno, maybe superfluous? + if (!access( "/usr/ucb/sh", X_OK )) + d->shell = "/usr/ucb/sh"; + else +#endif + d->shell = "/bin/sh"; +} + +#ifdef Q_OS_UNIX +void KProcess::setUsePty(Communication usePty, bool addUtmp) +{ + d->usePty = usePty; + d->addUtmp = addUtmp; + if (usePty) { + if (!d->pty) + d->pty = new KPty; + } else { + delete d->pty; + d->pty = 0; + } +} + +KPty *KProcess::pty() const +{ + return d->pty; +} +#endif //Q_OS_UNIX + +QString KProcess::quote(const QString &arg) +{ + QChar q('\''); + return QString(arg).replace(q, "'\\''").prepend(q).append(q); +} + + +////////////////////////////// +// private member functions // +////////////////////////////// + + +void KProcess::processHasExited(int state) +{ + // only successfully run NotifyOnExit processes ever get here + + status = state; + runs = false; // do this before commClose, so it knows we're dead + + commClose(); // cleanup communication sockets + + if (run_mode != DontCare) + emit processExited(this); +} + + + +int KProcess::childOutput(int fdno) +{ + if (communication & NoRead) { + int len = -1; + emit receivedStdout(fdno, len); + errno = 0; // Make sure errno doesn't read "EAGAIN" + return len; + } + else + { + char buffer[1025]; + int len; + + len = ::read(fdno, buffer, 1024); + + if (len > 0) { + buffer[len] = 0; // Just in case. + emit receivedStdout(this, buffer, len); + } + return len; + } +} + +int KProcess::childError(int fdno) +{ + char buffer[1025]; + int len; + + len = ::read(fdno, buffer, 1024); + + if (len > 0) { + buffer[len] = 0; // Just in case. + emit receivedStderr(this, buffer, len); + } + return len; +} + + +int KProcess::setupCommunication(Communication comm) +{ +#ifdef Q_OS_UNIX + // PTY stuff // + if (d->usePty) + { + // cannot communicate on both stderr and stdout if they are both on the pty + if (!(~(comm & d->usePty) & (Stdout | Stderr))) { + kdWarning(175) << "Invalid usePty/communication combination (" << d->usePty << "/" << comm << ")" << endl; + return 0; + } + if (!d->pty->open()) + return 0; + + int rcomm = comm & d->usePty; + int mfd = d->pty->masterFd(); + if (rcomm & Stdin) + in[1] = mfd; + if (rcomm & Stdout) + out[0] = mfd; + if (rcomm & Stderr) + err[0] = mfd; + } + + communication = comm; + + comm = (Communication) (comm & ~d->usePty); + if (comm & Stdin) { + if (socketpair(AF_UNIX, SOCK_STREAM, 0, in)) + goto fail0; + fcntl(in[0], F_SETFD, FD_CLOEXEC); + fcntl(in[1], F_SETFD, FD_CLOEXEC); + } + if (comm & Stdout) { + if (socketpair(AF_UNIX, SOCK_STREAM, 0, out)) + goto fail1; + fcntl(out[0], F_SETFD, FD_CLOEXEC); + fcntl(out[1], F_SETFD, FD_CLOEXEC); + } + if (comm & Stderr) { + if (socketpair(AF_UNIX, SOCK_STREAM, 0, err)) + goto fail2; + fcntl(err[0], F_SETFD, FD_CLOEXEC); + fcntl(err[1], F_SETFD, FD_CLOEXEC); + } + return 1; // Ok + fail2: + if (comm & Stdout) + { + close(out[0]); + close(out[1]); + out[0] = out[1] = -1; + } + fail1: + if (comm & Stdin) + { + close(in[0]); + close(in[1]); + in[0] = in[1] = -1; + } + fail0: + communication = NoCommunication; +#endif //Q_OS_UNIX + return 0; // Error +} + + + +int KProcess::commSetupDoneP() +{ + int rcomm = communication & ~d->usePty; + if (rcomm & Stdin) + close(in[0]); + if (rcomm & Stdout) + close(out[1]); + if (rcomm & Stderr) + close(err[1]); + in[0] = out[1] = err[1] = -1; + + // Don't create socket notifiers if no interactive comm is to be expected + if (run_mode != NotifyOnExit && run_mode != OwnGroup) + return 1; + + if (communication & Stdin) { + fcntl(in[1], F_SETFL, O_NONBLOCK | fcntl(in[1], F_GETFL)); + innot = new QSocketNotifier(in[1], QSocketNotifier::Write, this); + Q_CHECK_PTR(innot); + innot->setEnabled(false); // will be enabled when data has to be sent + QObject::connect(innot, SIGNAL(activated(int)), + this, SLOT(slotSendData(int))); + } + + if (communication & Stdout) { + outnot = new QSocketNotifier(out[0], QSocketNotifier::Read, this); + Q_CHECK_PTR(outnot); + QObject::connect(outnot, SIGNAL(activated(int)), + this, SLOT(slotChildOutput(int))); + if (communication & NoRead) + suspend(); + } + + if (communication & Stderr) { + errnot = new QSocketNotifier(err[0], QSocketNotifier::Read, this ); + Q_CHECK_PTR(errnot); + QObject::connect(errnot, SIGNAL(activated(int)), + this, SLOT(slotChildError(int))); + } + + return 1; +} + + + +int KProcess::commSetupDoneC() +{ + int ok = 1; +#ifdef Q_OS_UNIX + + if (d->usePty & Stdin) { + if (dup2(d->pty->slaveFd(), STDIN_FILENO) < 0) ok = 0; + } else if (communication & Stdin) { + if (dup2(in[0], STDIN_FILENO) < 0) ok = 0; + } else { + int null_fd = open( "/dev/null", O_RDONLY ); + if (dup2( null_fd, STDIN_FILENO ) < 0) ok = 0; + close( null_fd ); + } + struct linger so; + memset(&so, 0, sizeof(so)); + if (d->usePty & Stdout) { + if (dup2(d->pty->slaveFd(), STDOUT_FILENO) < 0) ok = 0; + } else if (communication & Stdout) { + if (dup2(out[1], STDOUT_FILENO) < 0 || + setsockopt(out[1], SOL_SOCKET, SO_LINGER, (char *)&so, sizeof(so))) + ok = 0; + if (communication & MergedStderr) { + if (dup2(out[1], STDERR_FILENO) < 0) + ok = 0; + } + } + if (d->usePty & Stderr) { + if (dup2(d->pty->slaveFd(), STDERR_FILENO) < 0) ok = 0; + } else if (communication & Stderr) { + if (dup2(err[1], STDERR_FILENO) < 0 || + setsockopt(err[1], SOL_SOCKET, SO_LINGER, (char *)&so, sizeof(so))) + ok = 0; + } + + // don't even think about closing all open fds here or anywhere else + + // PTY stuff // + if (d->usePty) { + d->pty->setCTty(); + if (d->addUtmp) + d->pty->login(KUser(KUser::UseRealUserID).loginName().local8Bit().data(), getenv("DISPLAY")); + } +#endif //Q_OS_UNIX + + return ok; +} + + + +void KProcess::commClose() +{ + closeStdin(); + +#ifdef Q_OS_UNIX + if (pid_) { // detached, failed, and killed processes have no output. basta. :) + // If both channels are being read we need to make sure that one socket + // buffer doesn't fill up whilst we are waiting for data on the other + // (causing a deadlock). Hence we need to use select. + + int notfd = KProcessController::theKProcessController->notifierFd(); + + while ((communication & (Stdout | Stderr)) || runs) { + fd_set rfds; + FD_ZERO(&rfds); + struct timeval timeout, *p_timeout; + + int max_fd = 0; + if (communication & Stdout) { + FD_SET(out[0], &rfds); + max_fd = out[0]; + } + if (communication & Stderr) { + FD_SET(err[0], &rfds); + if (err[0] > max_fd) + max_fd = err[0]; + } + if (runs) { + FD_SET(notfd, &rfds); + if (notfd > max_fd) + max_fd = notfd; + // If the process is still running we block until we + // receive data or the process exits. + p_timeout = 0; // no timeout + } else { + // If the process has already exited, we only check + // the available data, we don't wait for more. + timeout.tv_sec = timeout.tv_usec = 0; // timeout immediately + p_timeout = &timeout; + } + + int fds_ready = select(max_fd+1, &rfds, 0, 0, p_timeout); + if (fds_ready < 0) { + if (errno == EINTR) + continue; + break; + } else if (!fds_ready) + break; + + if ((communication & Stdout) && FD_ISSET(out[0], &rfds)) + slotChildOutput(out[0]); + + if ((communication & Stderr) && FD_ISSET(err[0], &rfds)) + slotChildError(err[0]); + + if (runs && FD_ISSET(notfd, &rfds)) { + runs = false; // hack: signal potential exit + return; // don't close anything, we will be called again + } + } + } +#endif //Q_OS_UNIX + + closeStdout(); + closeStderr(); + + closePty(); +} + + +void KProcess::virtual_hook( int, void* ) +{ /*BASE::virtual_hook( id, data );*/ } + + +/////////////////////////// +// CC: Class KShellProcess +/////////////////////////// + +KShellProcess::KShellProcess(const char *shellname): + KProcess() +{ + setUseShell( true, shellname ? shellname : getenv("SHELL") ); +} + +KShellProcess::~KShellProcess() { +} + +QString KShellProcess::quote(const QString &arg) +{ + return KProcess::quote(arg); +} + +bool KShellProcess::start(RunMode runmode, Communication comm) +{ + return KProcess::start(runmode, comm); +} + +void KShellProcess::virtual_hook( int id, void* data ) +{ KProcess::virtual_hook( id, data ); } + +#include "kprocess.moc" |