cyx_mail writes: > BTW,why the function "kill_my_pg(sig)" do a system call "kill(0,sig)" with the first parameter "0"? why not to kill himself only but a whole group? pppd acts as a process group leader, and sending a signal to the process group means that all children created by pppd (at least those that haven't gone off to start new process groups) will get the signal. This basically cleans up any charshunt or script that might be running in preparation to exit. There'd be no point in pppd sending the signal to himself only. The whole reason that pppd is doing this at all is that it's about to exit! It has already gotten the signal; and talking to yourself is often not useful. For more information about the kill(2) system call and process groups, see your system manual pages, or any reference book on UNIX or POSIX programming. -- James Carlson 42.703N 71.076W <carlsonj@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
