diff options
Diffstat (limited to 'package/base-files/files/lib')
| -rw-r--r-- | package/base-files/files/lib/functions/system.sh | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh index 94ccc02bb8..d06354b01f 100644 --- a/package/base-files/files/lib/functions/system.sh +++ b/package/base-files/files/lib/functions/system.sh @@ -141,10 +141,10 @@ mtd_get_mac_uci_config_ubi() { } mtd_get_mac_text() { - local mtdname=$1 - local offset=$(($2)) + local mtdname="$1" + local offset=$((${2:-0})) + local length="${3:-17}" local part - local mac_dirty part=$(find_mtd_part "$mtdname") if [ -z "$part" ]; then @@ -152,15 +152,9 @@ mtd_get_mac_text() { return fi - if [ -z "$offset" ]; then - echo "mtd_get_mac_text: offset missing!" >&2 - return - fi + [ $((offset + length)) -le $(mtd_get_part_size "$mtdname") ] || return - mac_dirty=$(dd if="$part" bs=1 skip="$offset" count=17 2>/dev/null) - - # "canonicalize" mac - [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty" + macaddr_canonicalize $(dd bs=1 if="$part" skip="$offset" count="$length" 2>/dev/null) } mtd_get_mac_binary() { |