From: Gerrit Pape <pape@smarden.org>
Subject: Re: runit-1.0.0 release
Date: Thu, 12 Feb 2004 20:46:20 +0000 [thread overview]
Message-ID: <20040212204520.26049.qmail@c032e53e4f6f05.315fe32.mid.smarden.org> (raw)
In-Reply-To: <20040212174120.26bcb697@rad1.109bean.org.uk>
[-- Attachment #1: Type: text/plain, Size: 1625 bytes --]
On Thu, Feb 12, 2004 at 05:41:20PM +0000, Richard A Downing FBCS wrote:
> I have made progress and now run a standard shell in the recovery
> situation, modelling my script on the openbsd example. I would have
> liked to use sulogin, which is more secure, but as I was planning not
> to install sysVinit, and sulogin is part of that package, it's out for
> the moment, but see below.
Yes, you're right, sulogin is part of sysvinit.
> I'm beginning to think that I'm going to have to install SysVinit
> after all. (I may need wall, halt, poweroff, reboot, shutdown, and
> sulogin, these are all part of sysVinit)
I still have the sysvinit package on my systems, and use some of its
tools. It's very difficult to remove the 'essential' package sysvinit
from a Debian system, even if runit is used as init scheme, because
other essential packages depend on sysvinit directly (e.g. dpkg).
A halt and reboot program actually is very simple; but beware, it simply
reboots or halts the kernel and doesn't care about the system's state.
If you use it from stage 1, you should exactly know the system's state
as /etc/runit/1 is the first and only process started since process no 1.
I attach a sample 'reboot.c' source file. Put it into
/package/admin/runit/compile/, change to this directory, add this to
the Makefile, and run make reboot:
# cat >>Makefile <<EOT
reboot: load reboot.o unix.a byte.a
./load reboot unix.a byte.a -static
reboot.o: compile reboot.c reboot_system.h
./compile reboot.c
EOT
# make reboot
This gives you a reboot program, and with a minor change a halt program.
Regards, Gerrit.
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#include <unistd.h>
#include "reboot_system.h"
#include "strerr.h"
#ifndef RB_AUTOBOOT
#error "RB_AUTOBOOT undefined"
#endif
unsigned int doreboot =1; /* set to 0 for halt */
int r =0;
int main(int argc, char **argv) {
sync();
if (doreboot)
r =reboot_system(RB_AUTOBOOT);
else {
#ifdef RB_POWER_OFF
r =reboot_system(RB_POWER_OFF);
if (r) strerr_die2sys(100, *argv, ": fatal: ");
#endif
#ifdef RB_HALT_SYSTEM
r =reboot_system(RB_HALT_SYSTEM);
#else
#ifdef RB_HALT
r =reboot_system(RB_HALT);
#else
r =reboot_system(RB_AUTOBOOT);
#endif
#endif
}
if (r) strerr_die2sys(100, *argv, ": fatal: ");
_exit(0);
}
next prev parent reply other threads:[~2004-02-12 20:46 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-10 15:35 Gerrit Pape
2004-02-11 8:35 ` Lukas Beeler
2004-02-11 17:37 ` Gerrit Pape
2004-02-11 19:23 ` Richard A Downing FBCS
2004-02-11 20:43 ` Gerrit Pape
2004-02-12 17:41 ` Richard A Downing FBCS
2004-02-12 20:46 ` Gerrit Pape [this message]
2004-02-12 21:15 ` Alejandro Mery
2004-02-13 2:13 ` nullmailer & fghack? (was Re: runit-1.0.0 release) Charlie Brady
2004-02-13 2:32 ` Alejandro Mery
2004-02-13 15:29 ` Charlie Brady
2004-02-13 16:32 ` Alejandro Mery
2004-02-14 12:22 ` runit-1.0.0 release Gerrit Pape
2004-02-16 22:04 ` Alejandro Mery
2004-02-19 16:15 ` Gerrit Pape
2004-02-19 21:03 ` Stefan Karrmann
2004-02-11 22:05 ` Thomas Schwinge
2004-03-08 19:22 ` runit-1.0.1 release Gerrit Pape
2004-03-30 19:08 ` runit-1.0.2 release Gerrit Pape
2004-06-28 7:55 ` runit-1.0.3 release Gerrit Pape
2004-08-02 16:43 ` runit-1.0.4 release Gerrit Pape
2004-09-22 20:44 ` runit-1.0.5 release Gerrit Pape
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