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| author | Michael Pratt <mcpratt@pm.me> | 2022-12-10 06:34:54 -0500 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2023-01-06 15:34:07 +0100 |
| commit | 1e3a8f454e46e6c235b972571761a0c6b23a3bfd (patch) | |
| tree | 548938e4b8f750b09ddcec482f46a92534b123cd /package/base-files/files/lib | |
| parent | 766de7013fcef2a9d759e056bb40c1cb58cfd65f (diff) | |
| download | upstream-1e3a8f454e46e6c235b972571761a0c6b23a3bfd.tar.gz upstream-1e3a8f454e46e6c235b972571761a0c6b23a3bfd.tar.bz2 upstream-1e3a8f454e46e6c235b972571761a0c6b23a3bfd.zip | |
base-files: rework mtd_get_mac_text()
It's necessary to be able to specify the length
for MAC addresses that are stored in flash, for example,
in a case where it is stored without any delimiter.
Let both offset and length have default values.
Add a sanity check related to partition size.
Also, clean up syntax and unnecessary lines.
Signed-off-by: Michael Pratt <mcpratt@pm.me>
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() { |