s6-linux-init-maker creates an .s6-svscan/SIGINT script that reboots the computer, and Adélie Linux' packaging of s6-linux-init-22.214.171.124 appears to contain an /etc/sysctl.d/ctrlaltdel.conf file that says "kernel.ctrl-alt-del = 0". So one might think that having the kernel send a SIGINT signal to process 1 when Ctrl + Alt + Del is pressed is the expected default setup. Given that this is a Linux-specific package, and that the stage1 init is now a C program, was there a reson for not setting this up directly with a 'reboot(RB_DISABLE_CAD)' call, like sysvinit, runit and others do?
Yes, this makes sense. I need to think about it some more, but at first sight modifying the setting in stage 1 is the right thing to do. I didn't do it in the first place because I directly translated stage 1 from the execline script, which didn't include ctrl-alt-del setting because it's policy, and didn't think further. Thanks for the suggestion. -- Laurent