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base-files: allow specifiying rootdev for find_mmc_part

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Some devices got more than one mmc device.
Allow specifying the root device as 2nd parameter of find_mmc_part so
scripts can avoid matching irrelevant partitions on wrong mmc device.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 9f223a20bd5f0cbec9f34427588b645ae38433ff)
This commit is contained in:
Daniel Golle 2021-11-01 13:58:20 +00:00 committed by Tianling Shen
parent 9bc1deec7f
commit faec1771f6
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GPG Key ID: 6850B6345C862176
1 changed files with 8 additions and 2 deletions
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10
package/base-files/files/lib/functions.sh
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@ -314,13 +314,19 @@ find_mtd_part() {
}
find_mmc_part() {
local DEVNAME PARTNAME
local DEVNAME PARTNAME ROOTDEV
if grep -q "$1" /proc/mtd; then
echo "" && return 0
fi
for DEVNAME in /sys/block/mmcblk*/mmcblk*p*; do
if [ -n "$2" ]; then
ROOTDEV="$2"
else
ROOTDEV="mmcblk*"
fi
for DEVNAME in /sys/block/$ROOTDEV/mmcblk*p*; do
PARTNAME="$(grep PARTNAME ${DEVNAME}/uevent | cut -f2 -d'=')"
[ "$PARTNAME" = "$1" ] && echo "/dev/$(basename $DEVNAME)" && return 0
done