47 lines
1.2 KiB
Bash
Executable File
47 lines
1.2 KiB
Bash
Executable File
#!/bin/sh -f
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#
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# Load modules via $MODALIAS.
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# Create /dev/disk/by-* and /dev/mapper/* symlinks.
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create_symlink()
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{
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typ=$1; sym=$2
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sym=${sym%\"}
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sym=${sym#\"}
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sym="/dev/disk/by-${typ}/${sym}"
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mkdir -p "${sym%/*}"
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ln -s "../../${dev_name}" "$sym"
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}
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exec > /dev/null 2>&1
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dev_name=${DEVPATH##*/}
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[ "$MODALIAS" ] && modprobe "$MODALIAS"
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[ "$SUBSYSTEM" = block ] && [ -b "/dev/${dev_name}" ] || exit 1
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read -r dm_name < "/sys/block/${dev_name}/dm/name" && {
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mkdir -p /dev/mapper
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ln -sf "../${dev_name}" "/dev/mapper/${dm_name:?}"
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}
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command -v blkid || exit 0
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# Race condition may occur if uevent arrives faster(isn't that a kernel bug!?)
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# than the kernel initializes device. This prevents blkid to fetch data from
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# device. To fix this, we simply waiting until blkid is succeeded.
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while ! _blkid=$(blkid "/dev/${dev_name}"); do
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if [ "$((count += 1))" = 10 ]; then
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exit 1
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else
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sleep 1
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fi
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done
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for line in $_blkid; do case ${line%%=*} in
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UUID) create_symlink uuid "${line#*=}" ;;
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LABEL) create_symlink label "${line#*=}" ;;
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PARTUUID) create_symlink partuuid "${line#*=}" ;;
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esac; done
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