[Buildroot] [PATCH 0/13 v2] some download-related changes

[Yann E. MORIN <yann.morin.1998@free.fr>]

Thomas, All,

On 2014-03-02 21:55 +0100, Thomas De Schampheleire spake thusly:
> Samuel Martin <s.martin49@gmail.com> schreef:
> >Yann, all
> >
> >On Sun, Mar 2, 2014 at 6:51 PM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> >> This series contains those download-related changes:
[--SNIP--]
> In this same area (but can be in separate patches) we should protect
> all download helpers against interrupted downloads. This is already
> some for wget and git, but not for hg and the others...

For all download helpers (except wget), we force-remove the local copy
(clone or checkout) before cloning/checking out, in case there were some
leftovers from a previous run.

The only phase that can still be interrupted is creating the archive
from the local copy. Even for git, this is not correctly handled:

    cvs:    tar czf "${output}" "${repodir}"
    git:    gzip -c "${output}.tmp" >"${output}"
    hg:     ${HG} archive [...] "${output}"
    svn:    tar czf "${output}" "${repodir}"

which leaves open a (small) window were we could have a problem.

Only wget gets it right:
    mv "${tmpfile}" "${output}"

So, yes, we can do better. I'll fix and resubmit.

Thank you!

Regards,
Yann E. MORIN.

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