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楼主 # 2024-08-04 17:58:48

memory
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注册时间: 2021-08-11
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A133 Tina 不能自动热拔插 U盘的问题

分析:

首先,make menuconfig 检查一下 System init 的值是:procd-init

那么 是用 udev 实现热拔插的

脚本位置:/etc/hotplug.d/block/10-mount

mount_ntfs() {
    case "${DEVNAME}" in
        sda*)
            mkdir -p /mnt/exUDISK
            /usr/bin/ntfs-3g /dev/${DEVNAME} /mnt/exUDISK -o rw,noatime,nodiratime,nosuid,nodev
            exit
            ;;
        mmcblk*)
            mkdir -p /mnt/SDCARD
            /usr/bin/ntfs-3g /dev/${DEVNAME} /mnt/SDCARD -o rw,noatime,nodiratime,nosuid,nodev
            exit
            ;;
        *)
            ;;
    esac
}

/sbin/block hotplug || {
    if [ -n "${DEVNAME}" ] && [ "${ACTION}" = "add" ]; then
        [ -f "/etc/config/fstab" ] && {
            grep "option.*device.*${DEVNAME}" /etc/config/fstab &>/dev/null && {
                if [ -x "/usr/bin/ntfs-3g" -a -x "/usr/bin/ntfs-3g.probe" ]; then
                    /usr/bin/ntfs-3g.probe --readwrite /dev/${DEVNAME} &>/dev/null
                    case $? in
                        0)
                            mount_ntfs
                            ;;
                        12)
                            echo "${DEVNAME} doesn't have a NTFS filesystem"
                            ;;
                        16)
                            echo "The volume is already exclusively opened and in use by a kernel driver or software."
                            break;
                            ;;
                        *)
                            echo "Something wrong on file system of ${DEVNAME}. Fixing. Please wait for a few seconds"
                            [ -x "/usr/bin/ntfsfix" ] && /usr/bin/ntfsfix /dev/${DEVNAME}
                            mount_ntfs
                            ;;
                    esac
                fi
            }
        }
    fi
}

改成这样:

#!/bin/sh

echo "------- $ACTION,$DEVNAME," > /dev/console

if [ "$ACTION" = "add" ]; then
    if [ -b "$DEVNAME" ]; then
        if [ "$SUBSYSTEM" = "block" ]; then
            # 检查文件系统类型
            FS_TYPE=$(udevadm info --query=all --name="$DEVNAME" | grep 'ID_FS_TYPE=' | cut -d'=' -f2)
            if [ "$FS_TYPE" = "exfat" ]; then
                MOUNT_POINT="/mnt/exUDISK/"
                mkdir -p "$MOUNT_POINT"
                mount -t exfat "$DEVNAME" "$MOUNT_POINT"
            fi
        fi
    fi
elif [ "$ACTION" = "remove" ]; then
    MOUNT_POINT="/mnt/exUDISK/"
    if [ -d "$MOUNT_POINT" ]; then
        umount "$MOUNT_POINT"
#       rmdir "$MOUNT_POINT"
    fi
fi

root@TinaLinux:/#
root@TinaLinux:/#
root@TinaLinux:/# cat /etc/hotplug.d/block/10-mount
#!/bin/sh

echo "------- $ACTION,$DEVNAME," > /dev/console

if [ "$ACTION" = "add" ]; then
    if [ -b "$DEVNAME" ]; then
        if [ "$SUBSYSTEM" = "block" ]; then
            # 检查文件系统类型
            FS_TYPE=$(udevadm info --query=all --name="$DEVNAME" | grep 'ID_FS_TYPE=' | cut -d'=' -f2)
            if [ "$FS_TYPE" = "exfat" ]; then
                MOUNT_POINT="/mnt/exUDISK/"
                mkdir -p "$MOUNT_POINT"
                mount -t exfat "$DEVNAME" "$MOUNT_POINT"
            fi
        fi
    fi
elif [ "$ACTION" = "remove" ]; then
    MOUNT_POINT="/mnt/exUDISK/"
    if [ -d "$MOUNT_POINT" ]; then
        umount "$MOUNT_POINT"
#       rmdir "$MOUNT_POINT"
    fi
fi

放在SDK这个位置:
target/allwinner/a133-a11/base-files/etc/hotplug.d/block/10-mount

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