Re: wait for childs of a child process

[ben <brouits@free.fr>]

Gauvain Pocentek a écrit :
> Hello,
> 
> I have to monitor applications on a system (users who run the application, how
> long, etc.), but I'm having troubles with applications which fork during startup
> (openoffice for instance).
> 
> Here is a snippet of what I planned to use (checks omitted to simplify):
> 
> ####################################
> #include <stdio.h>
> #include <sys/wait.h>
> #include <sys/types.h>
> 
> int main()
> {
>     int status;
>     pid_t p = fork();
>     if (p == 0)
>         system ("soffice");
>     else if (p > 0)
>     {
>         waitpid (p, &status, 0);
>         printf ("done\n");
>     }
> 
>     return 0;
> }
> 
> ####################################
> 
> Is there a way to make wait() or an other syscall monitor the process' children,
> or is patching openoffice (and other apps behaving in the same way) the only
> solution?
> 
> Thanks,
> Gauvain Pocentek

Would not be simpler to use Unix's pacct feature ?
It may not be enabled, though, on some linux distro.

- ben
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