On Sun, Sep 4, 2011 at 10:25 PM, Lin Ming <mlin@xxxxxxxxxxxxx> wrote: > On Sun, Sep 4, 2011 at 9:49 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: >> >>> Where does this exit signal come from? >>> Does USB interrupt handler will send kill signal to all processes >>> accessing it when it's unplugged(by hand)? >> >> The USB stack does not send any signals at all unless a process >> specifically asks for them. > > How to ask? > > I have not checked, but think umount code path will not send signal to process. > Curiously, where does the exit signal come from? > > Dave, > Did you press "Ctrl + C" on cat? Yes and no. I press ctrl+C after it hang as D state > > Lin Ming > -- Regards Yang RuiRui -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
