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scripts/getver.sh: prevent asking for negative rev-parse

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With the case of asking an invalid version that is too big, getver.sh
might return an invalid output in the form of HEAD~-2260475641.

This is caused by BASE_REV - GET_REV using a negative number.

Prevent this by checking if BASE_REV - GET_REV actually return 0 or a
positive number and set REV variable accordingly. With the following
change, invalid revision number will result in unknown printed instead
of the invalid HEAD~-NUMBERS output.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 9e49e0a6c4535d345084cc62c594be5cad23b911)
This commit is contained in:
Christian Marangi
2023-11-12 16:15:07 +01:00
parent b7e81d210b
commit 101988c61a
1 changed files with 1 additions and 1 deletions
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2
scripts/getver.sh
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@@ -21,7 +21,7 @@ try_git() {
r*)
GET_REV="$(echo $GET_REV | tr -d 'r')"
BASE_REV="$(git rev-list ${REBOOT}..HEAD 2>/dev/null | wc -l | awk '{print $1}')"
REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
[ $((BASE_REV - GET_REV)) -ge 0 ] && REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
;;
*)
BRANCH="$(git rev-parse --abbrev-ref HEAD)"