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Old 09-12-2006, 11:38 AM   #1
aral
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send signal to privileged application from unprivileged application


I tried to send a signal from an application running as normal user to an application running as root and obviously the application running as root didn't get the signal (it had a signal handler for it ). What can I change in order for the root application to get the signal ? I sent the signal using kill(pid, signumber) and I used SIGUSR1 for sig number .. Can anyone help me ?
 
Old 09-14-2006, 05:55 AM   #2
aral
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does anyone know ?
 
Old 09-20-2006, 08:55 AM   #3
aral
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Please, I really need this !
 
Old 09-22-2006, 10:48 AM   #4
aral
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Is this really so difficult ? I've imagined I'm the only one who doesn't know such simple things ..
 
Old 09-22-2006, 11:00 AM   #5
Matir
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Have you read the kill(2) manpage?
Quote:
For a process to have permission to send a signal it must either be
privileged (under Linux: have the CAP_KILL capability), or the real or
effective user ID of the sending process must equal the real or saved
set-user-ID of the target process. In the case of SIGCONT it suffices
when the sending and receiving processes belong to the same session.
 
Old 10-27-2006, 01:34 PM   #6
aral
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So , what's the definition of "session" which the manual mentiones when it says : "when the sending and receiving processes belong to the same session " ?
 
  


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