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Remove variable expansion in arithmetic

Browse Source 
https://www.shellcheck.net/wiki/SC2004
This commit is contained in:
Cody Scott
2024-04-05 09:10:07 -04:00
committed by Phil Elwell
parent d8abe8c67d
commit 61023cbd32
1 changed files with 5 additions and 5 deletions
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10
tools/rpi-otp-private-key
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@@ -50,8 +50,8 @@ check_key_set() {
}
read_key() {
out=READ_KEY="$(vcmailbox 0x00030081 $((8 + $ROW_COUNT * 4)) $((8 + $ROW_COUNT * 4)) $ROW_OFFSET $ROW_COUNT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0)" || die "Failed to read the current key from OTP"
READ_KEY="$(echo "${out}" | sed 's/0x//g' | awk -v last=$((8 + $ROW_COUNT)) '{for(i=8;i<last;i++) printf $i; print ""}')"
out=READ_KEY="$(vcmailbox 0x00030081 $((8 + ROW_COUNT * 4)) $((8 + ROW_COUNT * 4)) $ROW_OFFSET $ROW_COUNT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0)" || die "Failed to read the current key from OTP"
READ_KEY="$(echo "${out}" | sed 's/0x//g' | awk -v last=$((8 + ROW_COUNT)) '{for(i=8;i<last;i++) printf $i; print ""}')"
}
write_key() {
@@ -59,7 +59,7 @@ write_key() {
# Normalize formatting and check the length
key="$(echo "${key}" | tr 'A-Z' 'a-z')"
key="$(echo "${key}" | sed 's/[^a-f0-9]//g')"
[ "$(echo -n "${key}" | wc -c)" = $(($ROW_COUNT * 4 * 2)) ] || die "Invalid key parameter"
[ "$(echo -n "${key}" | wc -c)" = $((ROW_COUNT * 4 * 2)) ] || die "Invalid key parameter"
count=0
key_params=""
@@ -83,7 +83,7 @@ write_key() {
fi
fi
vcmailbox 0x38081 $((8 + $ROW_COUNT * 4)) $((8 + $ROW_COUNT * 4)) $ROW_OFFSET $ROW_COUNT ${key_params} || die "Failed to write key"
vcmailbox 0x38081 $((8 + ROW_COUNT * 4)) $((8 + ROW_COUNT * 4)) $ROW_OFFSET $ROW_COUNT ${key_params} || die "Failed to write key"
read_key
[ "${READ_KEY}" = "${key}" ] || die "Key readback check failed. ${out}"
}
@@ -151,7 +151,7 @@ fi
if [ $ROW_OFFSET -lt 0 ]; then
die "Offset too small"
fi
if [ ${ROW_OFFSET} -gt $(($MAX_ROW_COUNT - $ROW_COUNT)) ]; then
if [ ${ROW_OFFSET} -gt $((MAX_ROW_COUNT - ROW_COUNT)) ]; then
die "Offset too big"
fi
if [ -z $(which vcmailbox) ]; then