> > I think the SIGHUP must come from the new PID 1.
>
> I don't know if this will help you, however here is a program that I
> wrote last year that starts a service in the initramfs, it survives
> the systemd killing spree during the transition to the root
> filesystem, a new copy of the program i
Hey James,
On Mon, Jan 20, 2025 at 1:21 PM James Muir (jamesmui)
wrote:
> I think the SIGHUP must come from the new PID 1.
I don't know if this will help you, however here is a program that I
wrote last year that starts a service in the initramfs, it survives
the systemd killing spree during the
> > It is not clear to me if the '@' is necessary because the process is
> > invoked using the "init" kernel parameter.
>
> That detail doesn't matter. It's irrelevant how the process gets
> started. In particular as I understand you you fork()ed once,
> i.e. init= starts PID 1, but this is not PID
On Mo, 20.01.25 18:21, James Muir (jamesmui) (james...@cisco.com) wrote:
> > Are you sure you are setting argv[0][0] properly? the killing spree we
> > do on switch root should exclude processes marked like that.
>
> When I check /proc//cmdline, I see the '@' character.
>
> It is not clear to me i
> > I have a program, init-jm, that forks and executes
> > /usr/lib/systemd/systemd in the parent (using execl() ) while the
> > child collects some stats in a loop.
>
> Uh, you can do this, but it's not trivial to get right: you need to
> move yourself down the cgroup tree, because otherwise you'l
On Sa, 18.01.25 05:40, James Muir (jamesmui) (james...@cisco.com) wrote:
> I have a program, init-jm, that forks and executes
> /usr/lib/systemd/systemd in the parent (using execl() ) while the
> child collects some stats in a loop.
Uh, you can do this, but it's not trivial to get right: you need
> I suspect that your process has a controlling tty based on this comment
> in the killall() function at src/shared/killall.c:
>
>if (send_sighup) {
>/* Optionally, also send a SIGHUP signal, but only if the process
> has a controlling
> * tty. This is useful to allow h
Hi James,
On Sat, Jan 18, 2025 at 05:40:17AM +, James Muir (jamesmui) wrote:
> I have a program, init-jm, that forks and executes /usr/lib/systemd/systemd
> in the parent (using execl() ) while the child collects some stats in a loop.
>
> The child sets its argv[0][0] to ‘@’.
>
> init-jm is
I have a program, init-jm, that forks and executes /usr/lib/systemd/systemd in
the parent (using execl() ) while the child collects some stats in a loop.
The child sets its argv[0][0] to ‘@’.
init-jm is invoked using the “init” kernel parameter on a switch-root system
(it’s Fedora 41).
Can som
