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authorFelix Fietkau <nbd@openwrt.org>2014-04-07 10:29:47 +0000
committerFelix Fietkau <nbd@openwrt.org>2014-04-07 10:29:47 +0000
commit4a9ea80ef06472204b66ab037179455a47a98c9e (patch)
treebb2c6f63cce25b73251af6e825c7550ae5dfa90a /package/base-files/files/lib/functions/system.sh
parente700dcaf0493e0ea159594ba8b7b70ab1242ee18 (diff)
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/lib/functions.sh: move rarely used mtd and macaddr related functions to /lib/functions/system.sh
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 40411
Diffstat (limited to 'package/base-files/files/lib/functions/system.sh')
-rw-r--r--package/base-files/files/lib/functions/system.sh118
1 files changed, 118 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
new file mode 100644
index 0000000000..7655460159
--- /dev/null
+++ b/package/base-files/files/lib/functions/system.sh
@@ -0,0 +1,118 @@
+# Copyright (C) 2006-2013 OpenWrt.org
+
+find_mtd_index() {
+ local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
+ local INDEX="${PART##mtd}"
+
+ echo ${INDEX}
+}
+
+find_mtd_chardev() {
+ local INDEX=$(find_mtd_index "$1")
+ local PREFIX=/dev/mtd
+
+ [ -d /dev/mtd ] && PREFIX=/dev/mtd/
+ echo "${INDEX:+$PREFIX$INDEX}"
+}
+
+mtd_get_mac_ascii()
+{
+ local mtdname="$1"
+ local key="$2"
+ local part
+ local mac_dirty
+
+ part=$(find_mtd_part "$mtdname")
+ if [ -z "$part" ]; then
+ echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
+ return
+ fi
+
+ mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
+
+ # "canonicalize" mac
+ [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
+}
+
+mtd_get_mac_binary() {
+ local mtdname="$1"
+ local offset="$2"
+ local part
+
+ part=$(find_mtd_part "$mtdname")
+ if [ -z "$part" ]; then
+ echo "mtd_get_mac_binary: partition $mtdname not found!" >&2
+ return
+ fi
+
+ dd bs=1 skip=$offset count=6 if=$part 2>/dev/null | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"'
+}
+
+mtd_get_part_size() {
+ local part_name=$1
+ local first dev size erasesize name
+ while read dev size erasesize name; do
+ name=${name#'"'}; name=${name%'"'}
+ if [ "$name" = "$part_name" ]; then
+ echo $((0x$size))
+ break
+ fi
+ done < /proc/mtd
+}
+
+macaddr_add() {
+ local mac=$1
+ local val=$2
+ local oui=${mac%:*:*:*}
+ local nic=${mac#*:*:*:}
+
+ nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
+ echo $oui:$nic
+}
+
+macaddr_setbit_la()
+{
+ local mac=$1
+
+ printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
+}
+
+macaddr_2bin()
+{
+ local mac=$1
+
+ echo -ne \\x${mac//:/\\x}
+}
+
+macaddr_canonicalize()
+{
+ local mac="$1"
+ local canon=""
+
+ [ ${#mac} -gt 17 ] && return
+ [ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
+
+ for octet in ${mac//[\.:-]/ }; do
+ case "${#octet}" in
+ 1)
+ octet="0${octet}"
+ ;;
+ 2)
+ ;;
+ 4)
+ octet="${octet:0:2} ${octet:2:2}"
+ ;;
+ 12)
+ octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
+ ;;
+ *)
+ return
+ ;;
+ esac
+ canon=${canon}${canon:+ }${octet}
+ done
+
+ [ ${#canon} -ne 17 ] && return
+
+ printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
+}