cppcms-users

[Cppcms-users] cppcms::service and system(..)

[Christian G. <chr...@gm...>]

Hi all,

I would like to implement a Service class based on cppcms::service. I would like
to trigger the rpc call via java script (works) and in the Service
class I would like
to use system() function to execute a bash script.

If after executing/while executing the system function the cppcms apps
hangs completely.
My Service implements also a RPC call which does a reboot of the
system - which works.

Any idea what could went wrong?

thanks
---
Christian Gmeiner, MSc

Re: [Cppcms-users] cppcms::service and system(..)

[kpeo <sla...@ya...>]

Hello,

Fast answer:
system() is not so thread-safe way for calling system scripts. 
E.g., you can use booster::aio::deadline_timer (async_wait method)
or simple "old" pipe-method like this:

# define MAX_BUFFER 1024
std::string vexec(std::string const &cmd)
{
        char buf[MAX_BUFFER];
        std::string out;

        FILE* pipe = popen(cmd.c_str(), "r" );
        if (pipe == NULL ) {
                BOOSTER_LOG(debug,__FUNCTION__) << "invoking " << cmd << " is failed";
                return "";
        }
        while(1) {
fgets(buf, MAX_BUFFER, pipe) != NULL ) {
                out.append(buf);
        }
        pclose(pipe);
        return out;
}

Shure, this realisation needs in implementing of timeout for waiting of answer.

Regards,
kpeo

18.07.2012, 15:03, "Christian Gmeiner" <chr...@gm...>:
> Hi all,
>
> I would like to implement a Service class based on cppcms::service. I would like
> to trigger the rpc call via java script (works) and in the Service
> class I would like
> to use system() function to execute a bash script.
>
> If after executing/while executing the system function the cppcms apps
> hangs completely.
> My Service implements also a RPC call which does a reboot of the
> system - which works.
>
> Any idea what could went wrong?
>
> thanks
> ---
> Christian Gmeiner, MSc
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] cppcms::service and system(..)

[kpeo <sla...@ya...>]

sorry, accidentally hit "send" )


# define MAX_BUFFER 1024
std::string vexec(std::string const &cmd, int timeout)
{
        char buf[MAX_BUFFER];
        std::string out;

        FILE* pipe = popen(cmd.c_str(), "r" );
        if (pipe == NULL ) {
                BOOSTER_LOG(debug,__FUNCTION__) << "invoking " << cmd << " is failed";
                return "";
        }

        while(fgets(buf, MAX_BUFFER, pipe) != NULL) {
              out.append(buf);
          }
        pclose(pipe);
        return out;
}

18.07.2012, 15:03, "Christian Gmeiner" <chr...@gm...>:
> Hi all,
>
> I would like to implement a Service class based on cppcms::service. I would like
> to trigger the rpc call via java script (works) and in the Service
> class I would like
> to use system() function to execute a bash script.
>
> If after executing/while executing the system function the cppcms apps
> hangs completely.
> My Service implements also a RPC call which does a reboot of the
> system - which works.
>
> Any idea what could went wrong?
>
> thanks
> ---
> Christian Gmeiner, MSc
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] cppcms::service and system(..)

[kpeo <sla...@ya...>]

Ugh, never write a letter and especially code online, sorry ) (if it possible - please remove last my message from maillist)

"while" in function originally looks like this, but needs in timeout implementation:
while(fgets(buf, MAX_BUFFER, pipe) != NULL) {
  out.append(buf);
}

See additionally:
Application Lifetime: http://cppcms.com/wikipp/en/page/cppcms_1x_application_lifetime
Thread Safety: http://cppcms.com/wikipp/en/page/thread_safety
Async programming: http://cppcms.com/wikipp/en/page/cppcms_1x_aio
Thread about background processes: http://comments.gmane.org/gmane.comp.lib.cppcms.user/1326

Regards,
kpeo

18.07.2012, 15:03, "Christian Gmeiner" <chr...@gm...>:
> Hi all,
>
> I would like to implement a Service class based on cppcms::service. I would like
> to trigger the rpc call via java script (works) and in the Service
> class I would like
> to use system() function to execute a bash script.
>
> If after executing/while executing the system function the cppcms apps
> hangs completely.
> My Service implements also a RPC call which does a reboot of the
> system - which works.
>
> Any idea what could went wrong?
>
> thanks
> ---
> Christian Gmeiner, MSc
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] cppcms::service and system(..)

[Artyom B. <art...@ya...>]

Make sure you do not call system from asynchronous application - call it only from thread pool


In general I don't see why shouldn't system work. I have some project that run latex from the application
(even thou not using system but rather using fork+exec)

Bottom line show the code.

 
Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/



>________________________________
> From: Christian Gmeiner <chr...@gm...>
>To: cpp...@li... 
>Sent: Wednesday, July 18, 2012 2:03 PM
>Subject: [Cppcms-users] cppcms::service and system(..)
> 
>Hi all,
>
>I would like to implement a Service class based on cppcms::service. I would like
>to trigger the rpc call via java script (works) and in the Service
>class I would like
>to use system() function to execute a bash script.
>
>If after executing/while executing the system function the cppcms apps
>hangs completely.
>My Service implements also a RPC call which does a reboot of the
>system - which works.
>
>Any idea what could went wrong?
>
>thanks
>---
>Christian Gmeiner, MSc
>
>------------------------------------------------------------------------------
>Live Security Virtual Conference
>Exclusive live event will cover all the ways today's security and 
>threat landscape has changed and how IT managers can respond. Discussions 
>will include endpoint security, mobile security and the latest in malware 
>threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>_______________________________________________
>Cppcms-users mailing list
>Cpp...@li...
>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>

Re: [Cppcms-users] cppcms::service and system(..)

[Christian G. <chr...@gm...>]

2012/7/19 Artyom Beilis <art...@ya...>:
> Make sure you do not call system from asynchronous application - call it
> only from thread pool
>

The asynchronous application (javascript RPC) get the call to execute
a bash script
via system(..). How can I trigger the calling from thread pool?

thanks
---
Christian Gmeiner, MSc

Re: [Cppcms-users] cppcms::service and system(..)

[Artyom B. <art...@ya...>]

----- Original Message -----
> From: Christian Gmeiner <chr...@gm...>
> To: Artyom Beilis <art...@ya...>; cpp...@li...
> Cc: 
> Sent: Thursday, July 19, 2012 3:58 PM
> Subject: Re: [Cppcms-users] cppcms::service and system(..)
> 
> 2012/7/19 Artyom Beilis <art...@ya...>:
>>  Make sure you do not call system from asynchronous application - call it
>>  only from thread pool
>> 
> 
> The asynchronous application (javascript RPC) get the call to execute
> a bash script

Asynchronous JavaScript or Asynchronously mounted CppCMS Application/RPC

   http://cppcms.com/wikipp/en/page/cppcms_1x_application_lifetime

I mean if you mount an application asynchronously than you can't call system from there 
as all I/O would be blocked by system

> via system(..). How can I trigger the calling from thread pool?

See in cppcms::service::thread_pool and cppcms::thread_pool documentation



Artyom Beilis

--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/


> 
> thanks
> ---
> Christian Gmeiner, MSc
> 
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and 
> threat landscape has changed and how IT managers can respond. Discussions 
> will include endpoint security, mobile security and the latest in malware 
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
> 

Re: [Cppcms-users] cppcms::service and system(..)

[Christian G. <chr...@gm...>]

Hi all,


I have found some time and I am still working in this issue. The
current state is the following:

void Service::calibrate()
{
    // valid session needed
    if (!session().is_set("user"))
    {
        BOOSTER_DEBUG("Service") << __func__ << ") not logged in";
        return;
    }

    // only local host is allowed to do this
    if (request().remote_addr() != "127.0.0.1")
    {
        BOOSTER_DEBUG("Service") << __func__ << ") only on local host
- called from " << request().remote_addr();
        response().out() << "$.jGrowl(\"" << translate("Touch
calibration only allowed on local host") << "\");" << "\n";
        return;
    }

    response().out() << "$.jGrowl(\"" << translate("Starting
calibration") << "...\");" << "\n";
    BOOSTER_DEBUG("Service") << __func__ << ") doing action";

    system("/opt/scripts/set-backlight.sh 0");
    system("/opt/scripts/xcalibrate-touch.sh");
    system("/opt/scripts/set-backlight.sh 100");

    BOOSTER_DEBUG("Service") << __func__ << ") done";
}


system("/opt/scripts/set-backlight.sh 0"); call works as expected but
the whole web apps hangs
at the next call:
system("/opt/scripts/xcalibrate-touch.sh");


-----------------------------------------
#!/bin/bash
# Invokes touch screen calibrator (x11)

export DISPLAY=:0.0
BINARY=/opt/xinput_calibrator

CALDATA=`$BINARY | grep 'Setting new calibration data:' | cut -d ":"
-f 2 | tr -d ' ' | sed 's/,/ /g'`

# if CALDATA is empty simply return
if [ -z $CALDATA ]; then
  exit 0
fi

# at the moment we store our axis_calib data in
# the ID-Register. in some rare cases the
# ID-Register is not accessable and we need a
# fallback place to store our data.
if [ -e /proc/idreg/axis_calib ]; then
  echo $CALDATA > /proc/idreg/axis_calib
else
  echo $CALDATA > /home/vis/.axis_calib
fi
-----------------------------------------

xinput_calibrator can be found here https://github.com/tias/xinput_calibrator


At the moment I am not sure whats wrong and how to debug it. maybe someone
has an idea.

---
Christian Gmeiner, MSc


2012/7/19 Artyom Beilis <art...@ya...>:
>
>
> ----- Original Message -----
>> From: Christian Gmeiner <chr...@gm...>
>> To: Artyom Beilis <art...@ya...>; cpp...@li...
>> Cc:
>> Sent: Thursday, July 19, 2012 3:58 PM
>> Subject: Re: [Cppcms-users] cppcms::service and system(..)
>>
>> 2012/7/19 Artyom Beilis <art...@ya...>:
>>>  Make sure you do not call system from asynchronous application - call it
>>>  only from thread pool
>>>
>>
>> The asynchronous application (javascript RPC) get the call to execute
>> a bash script
>
> Asynchronous JavaScript or Asynchronously mounted CppCMS Application/RPC
>
>    http://cppcms.com/wikipp/en/page/cppcms_1x_application_lifetime
>
> I mean if you mount an application asynchronously than you can't call system from there
> as all I/O would be blocked by system
>
>> via system(..). How can I trigger the calling from thread pool?
>
> See in cppcms::service::thread_pool and cppcms::thread_pool documentation
>
>
>
> Artyom Beilis
>
> --------------
> CppCMS - C++ Web Framework:   http://cppcms.com/
> CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
>
>
>>
>> thanks
>> ---
>> Christian Gmeiner, MSc
>>
>> ------------------------------------------------------------------------------
>> Live Security Virtual Conference
>> Exclusive live event will cover all the ways today's security and
>> threat landscape has changed and how IT managers can respond. Discussions
>> will include endpoint security, mobile security and the latest in malware
>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>> _______________________________________________
>> Cppcms-users mailing list
>> Cpp...@li...
>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] cppcms::service and system(..)

[Christian G. <chr...@gm...>]

2012/9/22 Christian Gmeiner <chr...@gm...>:
> Hi all,
>
>
> I have found some time and I am still working in this issue. The
> current state is the following:
>
> void Service::calibrate()
> {
>     // valid session needed
>     if (!session().is_set("user"))
>     {
>         BOOSTER_DEBUG("Service") << __func__ << ") not logged in";
>         return;
>     }
>
>     // only local host is allowed to do this
>     if (request().remote_addr() != "127.0.0.1")
>     {
>         BOOSTER_DEBUG("Service") << __func__ << ") only on local host
> - called from " << request().remote_addr();
>         response().out() << "$.jGrowl(\"" << translate("Touch
> calibration only allowed on local host") << "\");" << "\n";
>         return;
>     }
>
>     response().out() << "$.jGrowl(\"" << translate("Starting
> calibration") << "...\");" << "\n";
>     BOOSTER_DEBUG("Service") << __func__ << ") doing action";
>
>     system("/opt/scripts/set-backlight.sh 0");
>     system("/opt/scripts/xcalibrate-touch.sh");
>     system("/opt/scripts/set-backlight.sh 100");
>
>     BOOSTER_DEBUG("Service") << __func__ << ") done";
> }
>
>
> system("/opt/scripts/set-backlight.sh 0"); call works as expected but
> the whole web apps hangs
> at the next call:
> system("/opt/scripts/xcalibrate-touch.sh");
>
>
> -----------------------------------------
> #!/bin/bash
> # Invokes touch screen calibrator (x11)
>
> export DISPLAY=:0.0
> BINARY=/opt/xinput_calibrator
>
> CALDATA=`$BINARY | grep 'Setting new calibration data:' | cut -d ":"
> -f 2 | tr -d ' ' | sed 's/,/ /g'`
>
> # if CALDATA is empty simply return
> if [ -z $CALDATA ]; then
>   exit 0
> fi
>
> # at the moment we store our axis_calib data in
> # the ID-Register. in some rare cases the
> # ID-Register is not accessable and we need a
> # fallback place to store our data.
> if [ -e /proc/idreg/axis_calib ]; then
>   echo $CALDATA > /proc/idreg/axis_calib
> else
>   echo $CALDATA > /home/vis/.axis_calib
> fi
> -----------------------------------------
>
> xinput_calibrator can be found here https://github.com/tias/xinput_calibrator
>
>
> At the moment I am not sure whats wrong and how to debug it. maybe someone
> has an idea.
>

Here is the syslog output:

May 31 08:00:38 OT tssw: ajax_render: template: touch_display
chromeless: 1 (base.cpp:79)
May 31 08:00:38 OT tssw: i18n: current used locale en (base.cpp:88)
May 31 08:00:38 OT tssw: cppcms_http: GET /keyboard.png (http_api.cpp:251)
May 31 08:00:38 OT tssw: cppcms_http: GET /favicon.ico (http_api.cpp:251)
May 31 08:00:41 OT tssw: cppcms_http: POST /tssw/rpc (http_api.cpp:251)
May 31 08:00:41 OT tssw: cppcms: JSON-RPC Method call:calibrate
(rpc_json.cpp:162)
May 31 08:00:41 OT tssw: TsswService: calibrate) doing action (tssw.cpp:73)

---
Christian Gmeiner, MSc

Re: [Cppcms-users] cppcms::service and system(..)

[Christian G. <chr...@gm...>]

2012/9/22 Christian Gmeiner <chr...@gm...>:
> 2012/9/22 Christian Gmeiner <chr...@gm...>:
>> Hi all,
>>
>>
>> I have found some time and I am still working in this issue. The
>> current state is the following:
>>
>> void Service::calibrate()
>> {
>>     // valid session needed
>>     if (!session().is_set("user"))
>>     {
>>         BOOSTER_DEBUG("Service") << __func__ << ") not logged in";
>>         return;
>>     }
>>
>>     // only local host is allowed to do this
>>     if (request().remote_addr() != "127.0.0.1")
>>     {
>>         BOOSTER_DEBUG("Service") << __func__ << ") only on local host
>> - called from " << request().remote_addr();
>>         response().out() << "$.jGrowl(\"" << translate("Touch
>> calibration only allowed on local host") << "\");" << "\n";
>>         return;
>>     }
>>
>>     response().out() << "$.jGrowl(\"" << translate("Starting
>> calibration") << "...\");" << "\n";
>>     BOOSTER_DEBUG("Service") << __func__ << ") doing action";
>>
>>     system("/opt/scripts/set-backlight.sh 0");
>>     system("/opt/scripts/xcalibrate-touch.sh");
>>     system("/opt/scripts/set-backlight.sh 100");
>>
>>     BOOSTER_DEBUG("Service") << __func__ << ") done";
>> }
>>
>>
>> system("/opt/scripts/set-backlight.sh 0"); call works as expected but
>> the whole web apps hangs
>> at the next call:
>> system("/opt/scripts/xcalibrate-touch.sh");
>>
>>
>> -----------------------------------------
>> #!/bin/bash
>> # Invokes touch screen calibrator (x11)
>>
>> export DISPLAY=:0.0
>> BINARY=/opt/xinput_calibrator
>>
>> CALDATA=`$BINARY | grep 'Setting new calibration data:' | cut -d ":"
>> -f 2 | tr -d ' ' | sed 's/,/ /g'`
>>
>> # if CALDATA is empty simply return
>> if [ -z $CALDATA ]; then
>>   exit 0
>> fi
>>
>> # at the moment we store our axis_calib data in
>> # the ID-Register. in some rare cases the
>> # ID-Register is not accessable and we need a
>> # fallback place to store our data.
>> if [ -e /proc/idreg/axis_calib ]; then
>>   echo $CALDATA > /proc/idreg/axis_calib
>> else
>>   echo $CALDATA > /home/vis/.axis_calib
>> fi
>> -----------------------------------------
>>
>> xinput_calibrator can be found here https://github.com/tias/xinput_calibrator
>>
>>
>> At the moment I am not sure whats wrong and how to debug it. maybe someone
>> has an idea.
>>
>
> Here is the syslog output:
>
> May 31 08:00:38 OT tssw: ajax_render: template: touch_display
> chromeless: 1 (base.cpp:79)
> May 31 08:00:38 OT tssw: i18n: current used locale en (base.cpp:88)
> May 31 08:00:38 OT tssw: cppcms_http: GET /keyboard.png (http_api.cpp:251)
> May 31 08:00:38 OT tssw: cppcms_http: GET /favicon.ico (http_api.cpp:251)
> May 31 08:00:41 OT tssw: cppcms_http: POST /tssw/rpc (http_api.cpp:251)
> May 31 08:00:41 OT tssw: cppcms: JSON-RPC Method call:calibrate
> (rpc_json.cpp:162)
> May 31 08:00:41 OT tssw: TsswService: calibrate) doing action (tssw.cpp:73)

I am quite sorry that I need to 'reopen' this thread but .... I do not
get it working :(

I want to run the following demo app from a cppcms app - its based on
http://www.unix.com/programming/60469-runaway-sigalrm-signal-handler.html

#include <stdio.h>
#include <signal.h>
#include <sys/time.h>
#include <fcntl.h>

#include <syslog.h>

void    on_alarm(int);    /* handler for alarm    */
void    on_input(int);    /* handler for keybd    */
int     set_timer( int which, long initial, long repeat );

volatile sig_atomic_t   finished  = 0;

int main( int argc, char * argv[])
{
    int  fd_flags;
    int k = 0;
    struct sigaction newhandler;
    sigset_t         blocked;

    newhandler.sa_handler = on_input;  /* handler function    */
    newhandler.sa_flags   = 0;

    sigemptyset(&blocked);
    newhandler.sa_mask = blocked;
    if ( sigaction(SIGIO, &newhandler, NULL) == -1 )
        perror("sigaction");

    newhandler.sa_handler = on_alarm;  /* handler function    */
    if ( sigaction(SIGALRM, &newhandler, NULL) == -1 )
        perror("sigaction");


    fcntl(0, F_SETOWN, getpid());
    fd_flags = fcntl(0, F_GETFL);
    fcntl(0, F_SETFL, (fd_flags|O_ASYNC));

    set_timer(ITIMER_REAL, 500, 500);


    while( !finished  )    {
       pause();
       printf("still in loop and finished = %d\n", finished);
    }
    return 0;
}
void on_input(int signum)
{
    int  c = getchar();
    if ( c == 'q' )
        finished = 1;
}

void on_alarm(int signum)
{
    static int k = 0;
    syslog(LOG_INFO, "call number %d\n", k++);
}


int set_timer( int which, long initial, long repeat )
{
    struct itimerval itimer;
    long secs;

    // initialize initial delay
    secs = initial / 1000 ;
    itimer.it_value.tv_sec     = secs;
    itimer.it_value.tv_usec    = (initial - secs*1000 ) * 1000 ;

    // initialize repeat inveral
    secs = repeat / 1000 ;
    itimer.it_interval.tv_sec  = secs;
    itimer.it_interval.tv_usec = (repeat - secs*1000 ) * 1000 ;

    return setitimer(which, &itimer, NULL);
}


It should print something like this to syslog

Oct 12 00:01:59 OT xinput_calibrator: call number 0
Oct 12 00:02:00 OT xinput_calibrator: call number 1
Oct 12 00:02:00 OT xinput_calibrator: call number 2
Oct 12 00:02:01 OT xinput_calibrator: call number 3
Oct 12 00:02:01 OT xinput_calibrator: call number 4
Oct 12 00:02:02 OT xinput_calibrator: call number 5
Oct 12 00:02:02 OT xinput_calibrator: call number 6
Oct 12 00:02:03 OT xinput_calibrator: call number 7


If I run this within a json rpc request I via
system("/opt/xinput_calibrator");

void Service::calibrate()
{
    // valid session needed
    if (!session().is_set("user"))
    {
        BOOSTER_DEBUG("Service") << __func__ << ": not logged in";
        return;
    }

    // only local host is allowed to do this
    if (request().remote_addr() != "127.0.0.1")
    {
        BOOSTER_DEBUG("Service") << __func__ << ": only on local host
- called from " << request().remote_addr();
        flash(translate("Touch calibration only allowed on local host"));
    }
    else
    {
        flash(translate("Starting calibration"));
        BOOSTER_DEBUG("Service") << __func__ << ": doing action";
#if 0
        // here comes unix magic
        int master;
        pid_t pid = forkpty(&master, 0, 0, 0);

        if (pid == -1)
        {
            BOOSTER_ERROR("Service") << __func__ << ": pid = " << pid;
            return;
        }
        else if (pid == 0)
        {
            if (execl("/bin/su", "/bin/su", "vis", "-c",
"/opt/scripts/xcalibrate-touch.sh", (char *)0) == -1 )
            {
                BOOSTER_ERROR("Service") << __func__ << ": execlp " << errno;
            }
            BOOSTER_ERROR("Service") << __func__ << ": program exited";
            return;
        }
        BOOSTER_DEBUG("Service") << __func__ << ": Child process: " << pid;
        BOOSTER_DEBUG("Service") << __func__ << ": done";

        // TODO ...
#endif
        //system("/bin/su vis -c /opt/scripts/xcalibrate-touch.sh");
        system("/opt/xinput_calibrator");
    }

    getFlashMessage();
    BOOSTER_DEBUG("Service") << __func__ << ": done";
}


It starts but nothing is in the system log :/ I think its a problem
with the timer stuff..
has anybody an idea... would sponsor a (virtual) beer.

root@OT:~# ps aux | grep xinput
root      2070  0.0  0.0   1792   496 ?        S    00:12   0:00 sh -c
/opt/xinput_calibrator
root      2071  0.0  0.0   1580   248 ?        S    00:12   0:00
/opt/xinput_calibrator
root      2075  0.0  0.1   3820   716 pts/2    S+   00:12   0:00 grep xinput

Other stuff like system("/sbin/reboot"); works...

thanks
---
Christian Gmeiner, MSc