Date: Mon, 21 Apr 2008 11:55:57 -0700 From: Alfred Perlstein <alfred@freebsd.org> To: Brooks Davis <brooks@freebsd.org> Cc: arch@freebsd.org, current@freebsd.org Subject: Re: ddb scripts now load by default Message-ID: <20080421185557.GB95731@elvis.mu.org> In-Reply-To: <20080421182338.GB20417@lor.one-eyed-alien.net> References: <20080421182338.GB20417@lor.one-eyed-alien.net>
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I know this is a big step forward in a lot of ways, but it's also a big step backwards for people used to how things just work. Can we somehow put a "press a key to abort reboot" option in that script before acting on it? -Alfred (who thinks this is really cool, but wants to be able to debug kernels without having to learn and disable something new) * Brooks Davis <brooks@freebsd.org> [080421 11:24] wrote: > I've changed the default value of ddb_enable to YES so we now load ddb > scripts from ddb.conf by default. Developers expecting to perform > active deugging should add ddb_enable=NO or change the script to not > perform at textdump and reboot the machine. > > This is another step toward hopefully shipping 8.0 with DDB built > in and generating useful crash dumps. The security implications of > doing so need to be carefully considered and in particular the GENERIC > kernel will probably want to be shipped with at least the options > DDB_UNATTENDED and SC_DISABLE_KDBKEY. > > The fact that the watchdog driver changes it's behavior based on > DDB_UNATTENDED is probably a bug that should be fixed. > > -- Brooks > > ----- Forwarded message from Brooks Davis <brooks@FreeBSD.ORG> ----- > > From: Brooks Davis <brooks@FreeBSD.ORG> > Date: Mon, 21 Apr 2008 18:18:00 +0000 (UTC) > To: brooks@FreeBSD.ORG > Subject: [src] cvs commit: src/etc/defaults rc.conf > > brooks 2008-04-21 18:17:48 UTC > > FreeBSD src repository > > Modified files: > etc/defaults rc.conf > Log: > Change the default of ddb_enable to YES so we default to generating textdumps > on panic. This means you get a potentially useful dump even if your system > is running X when you panic. > > X-MFC after: never > > Revision Changes Path > 1.332 +1 -1 src/etc/defaults/rc.conf > _______________________________________________ > cvs-all@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/cvs-all > To unsubscribe, send any mail to "cvs-all-unsubscribe@freebsd.org" > > > Index: src/etc/defaults/rc.conf > diff -u src/etc/defaults/rc.conf:1.331 src/etc/defaults/rc.conf:1.332 > --- src/etc/defaults/rc.conf:1.331 Sun Apr 20 20:37:20 2008 > +++ src/etc/defaults/rc.conf Mon Apr 21 18:17:48 2008 > @@ -33,7 +33,7 @@ > apm_enable="NO" # Set to YES to enable APM BIOS functions (or NO). > apmd_enable="NO" # Run apmd to handle APM event from userland. > apmd_flags="" # Flags to apmd (if enabled). > -ddb_enable="NO" # Set to YES to load ddb scripts at boot. > +ddb_enable="YES" # Load ddb scripts at boot. > ddb_config="/etc/ddb.conf" # ddb(8) config file. > devd_enable="YES" # Run devd, to trigger programs on device tree changes. > devd_flags="" # Additional flags for devd(8). > > > ----- End forwarded message ----- -- - Alfred Perlstein
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