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pre-commit: Check file modes

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Check new files and files whose mode changes to verify that each file
mode matches the content of the file.  The mode of a file must be
executable if and only if the file looks executable (name ends in a
Windows executable extension or content starts with a shebang line).
This commit is contained in:
Brad King 2010-05-20 11:42:57 -04:00
parent 7cd6238240
commit 7827726e88
1 changed files with 39 additions and 0 deletions
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39
pre-commit
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@ -49,9 +49,11 @@ if test "$(git diff --cached --name-only --diff-filter=A -z $against |
'"$(git diff --cached --name-only --diff-filter=A $against)"
fi
#-----------------------------------------------------------------------------
# Builtin whitespace checks.
bad=$(git diff-index --check --cached $against --) || die "$bad"
#-----------------------------------------------------------------------------
# Reject leading TABs.
check_tab() {
git diff-index -p --cached $against -- "$1" |
@ -78,3 +80,40 @@ done)
test -z "$bad" || die 'Leading TABs added in
'"$bad"'
Convert them to spaces (2 per TAB) before commit.'
#-----------------------------------------------------------------------------
# Check file modes.
looks_executable() {
case "$1" in
*.bat) return 0 ;;
*.cmd) return 0 ;;
*.exe) return 0 ;;
*.com) return 0 ;;
esac
git cat-file blob "$2" | head -1 | grep "^#!/" > /dev/null
}
mode_not_exe () {
echo "The file '$file' has looks executable but does not have an executable mode."
}
mode_bad_exe () {
echo "The file '$file' has executable mode but does not look executable."
}
mode_non_file () {
echo "The path '$file' has a non-file mode."
}
check_mode() {
case "$dst_mode" in
100755) looks_executable "$file" "$dst_obj" || mode_bad_exe ;;
100644) looks_executable "$file" "$dst_obj" && mode_not_exe ;;
160000) ;;
*) mode_non_file ;;
esac
}
bad=$(git diff-index --cached $against -- |
sed -n '/^:[^:]/ {s/^://;p;}' |
while read src_mode dst_mode src_obj dst_obj status file; do
if test "$src_mode" != "$dst_mode" -a "$dst_mode" != "000000"; then
check_mode
fi
done)
test -z "$bad" || die "$bad"