On Fri, May 24, 2019 at 02:01:35PM -0700, Fred wrote: > Hello, > I subscribe to the Devuan Linux mailing list. This posting just > arrived and it appears quite important to Debian. [about sending SIGILL to systemd] This is most probably fake news. You have to have appropriate permissions to send *any* signal to a proces. From the kill(2) man page "For a process to have permission to send a signal, it must either be privileged (under Linux: have the CAP_KILL capability in the user namespace of the target process), 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. (Historically, the rules were different; see NOTES.)" That means that to send SIGILL to pid 1 you most probably gotta be root (systemd or not). And then, there are more classy ways to bring your system down anyway. Folks, please double-check that stuff before reposting. I don't want the Debian mailing list to become Fakebook or Twitter. Cheers -- tomás
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