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fix: Derive NT5 boot load size from extracted image (#1991)

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This commit is contained in:
Kroese
2026-07-26 08:34:21 +02:00
committed by GitHub
parent c589e1be18
commit bada80331d
2 changed files with 39 additions and 29 deletions
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src/image.sh
+38 -28
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@@ -1044,43 +1044,53 @@ EOC
getBootLoadSize() {
local iso="$1"
local desc="$2"
local boot_info value
local dir="$2"
local desc="$3"
local boot_info size value
if ! boot_info=$(isoinfo -d -i "$iso"); then
case "${DETECTED,,}" in
"win2k"* | "winxp"* | "win2003"* )
case "${DETECTED,,}" in
"win2k"* | "winxp"* | "win2003"* )
BOOT_LOAD_SIZE=4
return 0
;;
esac
if [ ! -s "$dir/$ETFS" ]; then
error "Failed to locate file \"$ETFS\" in $desc ISO image!"
return 1
fi
error "Failed to read boot image information from $desc ISO!"
return 1
fi
if ! size=$(stat -c%s "$dir/$ETFS"); then
error "Failed to determine boot image size from $desc ISO!"
return 1
fi
value=$(awk '/Nsect / { print $NF; exit }' <<< "$boot_info")
if (( size < 512 || size % 512 != 0 )); then
error "Invalid boot image size found in $desc ISO!"
return 1
fi
if [ -z "$value" ]; then
BOOT_LOAD_SIZE=$((size / 512))
;;
case "${DETECTED,,}" in
"win2k"* | "winxp"* | "win2003"* )
BOOT_LOAD_SIZE=4
return 0
;;
esac
* )
error "Failed to determine boot image load size from $desc ISO!"
return 1
fi
if ! boot_info=$(isoinfo -d -i "$iso"); then
error "Failed to read boot image information from $desc ISO!"
return 1
fi
if [[ ! "$value" =~ ^[0-9]+$ ]] || [ "${#value}" -gt 5 ]; then
error "Invalid boot image load size found in $desc ISO!"
return 1
fi
value=$(awk '/Nsect / { print $NF; exit }' <<< "$boot_info")
BOOT_LOAD_SIZE=$((10#$value))
if [ -z "$value" ]; then
error "Failed to determine boot image load size from $desc ISO!"
return 1
fi
if [[ ! "$value" =~ ^[0-9]+$ ]] || [ "${#value}" -gt 5 ]; then
error "Invalid boot image load size found in $desc ISO!"
return 1
fi
BOOT_LOAD_SIZE=$((10#$value))
;;
esac
if (( BOOT_LOAD_SIZE < 1 || BOOT_LOAD_SIZE > 65535 )); then
error "Invalid boot image load size found in $desc ISO!"