What is the meaning of ownership of a process on a window?












0














In manpage of xdotool




getwindowpid [window]


Output the PID owning a given window. This requires effort from the
application owning a window and may not work for all windows. This
uses _NET_WM_PID property of the window. See "EXTENDED WINDOW MANAGER
HINTS" below for more information.




When a process is said to own a window, what does that mean? I have several guesses about it:




  • Is the process the one which has created the window?


  • A window is not a process, so ownership can't imply the parent-child relation between processes.


  • what is the relation between a window of a process and the controlling terminal of the same process ('s session)? Is a window of a process related to terminal related signals (SIGINT, SIGHUP, SIGQUIT)?



Thanks.










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  • 3




    It doesn't mean anything; any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows.
    – mosvy
    Dec 5 '18 at 17:38


















0














In manpage of xdotool




getwindowpid [window]


Output the PID owning a given window. This requires effort from the
application owning a window and may not work for all windows. This
uses _NET_WM_PID property of the window. See "EXTENDED WINDOW MANAGER
HINTS" below for more information.




When a process is said to own a window, what does that mean? I have several guesses about it:




  • Is the process the one which has created the window?


  • A window is not a process, so ownership can't imply the parent-child relation between processes.


  • what is the relation between a window of a process and the controlling terminal of the same process ('s session)? Is a window of a process related to terminal related signals (SIGINT, SIGHUP, SIGQUIT)?



Thanks.










share|improve this question


















  • 3




    It doesn't mean anything; any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows.
    – mosvy
    Dec 5 '18 at 17:38
















0












0








0







In manpage of xdotool




getwindowpid [window]


Output the PID owning a given window. This requires effort from the
application owning a window and may not work for all windows. This
uses _NET_WM_PID property of the window. See "EXTENDED WINDOW MANAGER
HINTS" below for more information.




When a process is said to own a window, what does that mean? I have several guesses about it:




  • Is the process the one which has created the window?


  • A window is not a process, so ownership can't imply the parent-child relation between processes.


  • what is the relation between a window of a process and the controlling terminal of the same process ('s session)? Is a window of a process related to terminal related signals (SIGINT, SIGHUP, SIGQUIT)?



Thanks.










share|improve this question













In manpage of xdotool




getwindowpid [window]


Output the PID owning a given window. This requires effort from the
application owning a window and may not work for all windows. This
uses _NET_WM_PID property of the window. See "EXTENDED WINDOW MANAGER
HINTS" below for more information.




When a process is said to own a window, what does that mean? I have several guesses about it:




  • Is the process the one which has created the window?


  • A window is not a process, so ownership can't imply the parent-child relation between processes.


  • what is the relation between a window of a process and the controlling terminal of the same process ('s session)? Is a window of a process related to terminal related signals (SIGINT, SIGHUP, SIGQUIT)?



Thanks.







x11 process






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asked Dec 5 '18 at 15:53









Tim

26.3k74246455




26.3k74246455








  • 3




    It doesn't mean anything; any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows.
    – mosvy
    Dec 5 '18 at 17:38
















  • 3




    It doesn't mean anything; any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows.
    – mosvy
    Dec 5 '18 at 17:38










3




3




It doesn't mean anything; any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows.
– mosvy
Dec 5 '18 at 17:38






It doesn't mean anything; any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows.
– mosvy
Dec 5 '18 at 17:38












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From mosvy's comment:




any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows







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    From mosvy's comment:




    any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows







    share|improve this answer


























      0














      From mosvy's comment:




      any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows







      share|improve this answer
























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        0






        From mosvy's comment:




        any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows







        share|improve this answer












        From mosvy's comment:




        any X11 client can set the _NET_WM_PID property on any window to whatever it likes, eg. xprop -id $WINDOWID -f _NET_WM_PID 32c -set _NET_WM_PID 1 will not make your terminal window owned by init. Processes and/or X11 clients do not own windows








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        share|improve this answer



        share|improve this answer










        answered 2 days ago









        Tim

        26.3k74246455




        26.3k74246455






























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