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// Copyright (C) 1999-2002 Open Source Telecom Corporation.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// As a special exception to the GNU General Public License, permission is
// granted for additional uses of the text contained in its release
// of Common C++.
//
// The exception is that, if you link the Common C++ library with other
// files to produce an executable, this does not by itself cause the
// resulting executable to be covered by the GNU General Public License.
// Your use of that executable is in no way restricted on account of
// linking the Common C++ library code into it.
//
// This exception does not however invalidate any other reasons why
// the executable file might be covered by the GNU General Public License.
//
// This exception applies only to the code released under the
// name Common C++. If you copy code from other releases into a copy of
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way. To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for Common C++, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
#include <cc++/config.h>
#include <cc++/export.h>
#include <cc++/process.h>
#include <cstdlib>
#include <cstdio>
#ifndef WIN32
#include <sys/time.h>
#include <sys/wait.h>
#ifdef SIGTSTP
#include <sys/file.h>
#include <sys/ioctl.h>
#endif
#ifndef _PATH_TTY
#define _PATH_TTY "/dev/tty"
#endif
#endif
#ifdef WIN32
#include <process.h>
#include <stdio.h>
#endif
#ifdef CCXX_NAMESPACES
namespace ost {
#endif
#ifdef WIN32
int Process::spawn(const char *exename, const char **args)
{
return ::spawnvp(P_WAIT, (char *)exename, (char **)args);
}
#else
int Process::spawn(const char *exename, const char **args)
{
int status, pid;
pid = vfork();
if(pid == -1)
return -1;
if(!pid)
{
execvp((char *)exename, (char **)args);
_exit(-1);
}
#ifdef __FreeBSD__
wait4(pid, &status, WUNTRACED, NULL);
#else
waitpid(pid, &status, WUNTRACED);
#endif
#ifdef WEXITSTATAUS
return WEXITSTATUS(status);
#else
return status;
#endif
}
Process::Trap Process::setInterruptSignal(int signo, Trap func)
{
struct sigaction sig_act, old_act;
sig_act.sa_handler = func;
sigemptyset(&sig_act.sa_mask);
if(signo != SIGALRM)
sigaddset(&sig_act.sa_mask, SIGALRM);
sig_act.sa_flags = 0;
#ifdef SA_INTERRUPT
sig_act.sa_flags |= SA_INTERRUPT;
#endif
if(sigaction(signo, &sig_act, &old_act) < 0)
return SIG_ERR;
return old_act.sa_handler;
}
Process::Trap Process::setPosixSignal(int signo, Trap func)
{
struct sigaction sig_act, old_act;
sig_act.sa_handler = func;
sigemptyset(&sig_act.sa_mask);
sig_act.sa_flags = 0;
if(signo == SIGALRM)
{
#ifdef SA_INTERRUPT
sig_act.sa_flags |= SA_INTERRUPT;
#endif
}
else
{
sigaddset(&sig_act.sa_mask, SIGALRM);
#ifdef SA_RESTART
sig_act.sa_flags |= SA_RESTART;
#endif
}
if(sigaction(signo, &sig_act, &old_act) < 0)
return SIG_ERR;
return old_act.sa_handler;
}
void Process::detach(void)
{
int pid;
int fd;
if(getppid() == 1)
return;
#ifdef SIGTTOU
::signal(SIGTTOU, SIG_IGN);
#endif
#ifdef SIGTTIN
::signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGTSTP
::signal(SIGTSTP, SIG_IGN);
#endif
if((pid = fork()) < 0)
throw(pid);
else if(pid > 0)
exit(0);
#if defined(SIGTSTP) && defined(TIOCNOTTY)
if(setpgid(0, getpid()) == -1)
throw(-1);
if((fd = open(_PATH_TTY, O_RDWR)) >= 0)
{
ioctl(fd, TIOCNOTTY, NULL);
close(fd);
}
#else
if(setpgrp() == -1)
throw(-1);
::signal(SIGHUP, SIG_IGN);
if((pid = fork()) < 0)
throw(-1);
else if(pid > 0)
exit(0);
#endif
}
#endif
void Process::setEnv(const char *name, const char *value, bool overwrite)
{
#ifdef HAVE_SETENV
::setenv(name, value, (int)overwrite);
#else
char strbuf[256];
snprintf(strbuf, sizeof(strbuf), "%s=%s", name, value);
if(!overwrite)
if(getenv(strbuf))
return;
::putenv(strbuf);
#endif
}
const char *Process::getEnv(const char *name)
{
return ::getenv(name);
}
#ifdef CCXX_NAMESPACES
}
#endif
/** EMACS **
* Local variables:
* mode: c++
* c-basic-offset: 8
* End:
*/
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