Re: Making a dynamically-linked root

From: Gordon Tetlow (gordont_at_gnf.org)
Date: 06/02/03

  • Next message: Sean Chittenden: "Re: Making a dynamically-linked root" 
    Date: Mon, 2 Jun 2003 12:23:05 -0700
To: Sean Chittenden <sean@chittenden.org>

    On Mon, Jun 02, 2003 at 12:10:07PM -0700, Sean Chittenden wrote:
    > > I'm planning on making a dynamically-linked root partition by
    > > 5.2. To that end, I'm planning on doing to the following:
    > >
    > > Integrate Tim Kientzle's /rescue patches into the tree
    > > Create /lib and populate with all the libs needed to support dynamically
    > > linked binaries in /bin and /sbin
    > > Have a big (probably NO_DYNAMIC_ROOT) knob to switch from static to
    > > dynamic.
    >
    > I didn't see the bits for /rescue in the attached patch listed to know
    > if there is a more updated /rescue patch available, but I just want to
    > emphasize the caution necessary for this.

    Part of the reason for this email was to communicate to Tim that I'd
    like his patches to integrate into my tree.

    > On a different note regarding /rescue, would it be possible to add
    > less(1) to the rescue set? In single user mode, scroll lock doesn't
    > work and there's no way to read recent entries in UPDATING without

    Hmm, my scroll lock works in single-user.

    > cat(1) or head(1). Lastly, on install, given the importance of having
    > functioning binaries for /bin and /sbin, has it been considered to
    > have the programs executed once before install to see if they can run,
    > possibly with the -V flag?
    >
    > ./[progname] --test
    > install [progname] /bin

    This isn't a bad idea going down the road.

    > Having make bomb out after having the program run a "self test" that
    > tests its ability to execute with ld would save many headaches.
    >
    > As for the performance hit that you describe, have you investigated
    > the prebinding work to see how that affects performance with /lib and
    > /usr/lib prebound?

    I imagine it would help, but I don't think mdodd's prebinding stuff is
    to the point where we can use it.

    -gordon

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