38 lines
908 B
Bash
38 lines
908 B
Bash
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#!/bin/sh
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# debian ubuntu redhat 安装模式共用此脚本
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# alpine 未用到此脚本
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get_all_disks() {
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# busybox blkid 不接受任何参数
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disks=$(blkid | cut -d: -f1 | cut -d/ -f3 | sed -E 's/p?[0-9]+$//' | sort -u)
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# blkid 会显示 sr0，经过上面的命令输出为 sr
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# 因此要检测是否有效
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for disk in $disks; do
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if [ -b "/dev/$disk" ]; then
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echo "$disk"
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fi
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done
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}
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get_xda() {
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main_disk="$(grep -o 'extra\.main_disk=[^ ]*' /proc/cmdline | cut -d= -f2)"
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# 防止 $main_disk 为空
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if [ -z "$main_disk" ]; then
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return 1
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fi
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for disk in $(get_all_disks); do
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if fdisk -l "/dev/$disk" | grep -iq "$main_disk"; then
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echo "$disk"
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return
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fi
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done
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# 如果没找到，返回假的值，防止意外地格式化全部盘
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echo 'FAKE_DISK'
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return 1
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}
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get_xda
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