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download/git: add warning not to use our git cache

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We really want the user not to use our git cache manually, or their
changes (committed or not) may eventually get lost.

So, add a warning file, not unlike the one we put in the target/
directory, to warn the user not to use the git tree.

Ideally, we would have carried this file in support/misc/, but the git
backend does not have access to it: the working directory is somewhere
unknown, and TOPDIR is not exported in the environment.

So, we have to carry it in-line in the backend instead.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Reviewed-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Tested-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Yann E. MORIN 2018-05-01 10:44:09 +02:00 committed by Thomas Petazzoni
parent d3221806b9
commit f1eb192e26
1 changed files with 18 additions and 0 deletions
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support/download/git
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@ -43,6 +43,24 @@ _git() {
eval GIT_DIR="${git_cache}/.git" ${GIT} "${@}"
}
# Create a warning file, that the user should not use the git cache.
# It's ours. Our precious.
cat <<-_EOF_ >"${dl_dir}/git.readme"
IMPORTANT NOTE!
The git tree located in this directory is for the exclusive use
by Buildroot, which uses it as a local cache to reduce bandwidth
usage.
Buildroot *will* trash any changes in that tree whenever it needs
to use it. Buildroot may even remove it in case it detects the
repository may have been damaged or corrupted.
Do *not* work in that directory; your changes will eventually get
lost. Do *not* even use it as a remote, or as the source for new
worktrees; your commits will eventually get lost.
_EOF_
# Initialise a repository in the git cache. If the repository already
# existed, this is a noop, unless the repository was broken, in which
# case this magically restores it to working conditions. In the latter