自定义 bitbake bbapend 未正确附加 mender fstab 文件

Question

我在我的 yocto 构建中使用 github.com/mendersoftware/meta-mender。我想使用 sed 和我自己图层中的 bbappend 文件来编辑 /etc/fstab。具体来说，meta-mender 目前正在提供他们自己的 fstab 文件并使用 base-files_3.%.bbappend 编辑它，我只想从生成的 /etc/fstab.

中删除 auto 关键字

问题是，当我在我的层中为 base-files_3.%.%.bbappend 提供我自己的 bbappend（我的层比 meta-mender 具有更高的优先级）时，meta-mender fstab 似乎没有根本无法创建，而是打开嵌入的库存。

这是我的 meta-layer/recipes-core/base-files/base-files_3.%.bbappend:

do_install_append(){
    sed -i -e 's$.*@MENDER_BOOT_PART@.*$@MENDER_BOOT_PART@   /uboot           @MENDER_BOOT_PART_FSTYPE@       defaults,sync    0  0$' ${D}${sysconfdir}/fstab
    sed -i -e 's$.*@MENDER_DATA_PART@.*$@MENDER_DATA_PART@   /data     @MENDER_DATA_PART_FSTYPE@       defaults         0  0$' ${D}${sysconfdir}/fstab
}

如果我运行 bitbake -e base-files，然后寻找 do_install 函数，你可以清楚地看到我的 sed 命令被正确地附加到 meta-mender/meta-mender-core/recipes-core/base-files/base-files_3:

do_install() {
for d in /boot /dev /bin /sbin /lib            /etc /etc/default            /etc/skel /lib /mnt /proc /home/root /run            /usr /usr/bin /usr/share/doc/base-files-3.0.14 /usr/games /usr/include            /usr/lib /usr/sbin /usr/share            /usr/share/common-licenses /usr/share/dict /usr/share/info            /usr/share/man /usr/share/misc /var            /var/backups /var/lib            /sys /var/lib/misc /var/spool            /var/volatile            /var/volatile/log            /home /usr/src /var/local            /media; do
    install -m 0755 -d /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image$d
done
for d in /tmp /var/volatile/tmp; do
    install -m 1777 -d /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image$d
done
for d in ; do
    install -m 2775 -d /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image$d
done
for d in log tmp; do
    ln -sf volatile/$d /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/var/$d
done

ln -snf ../run /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/var/run
ln -snf ../run/lock /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/var/lock

do_install_basefilesissue

rotation=`cat /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/rotation`
if [ "$rotation" != "0" ]; then
    install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/rotation /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/rotation
fi

install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/fstab /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/fstab
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/filesystems /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/filesystems
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/usbd /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/default/usbd
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/profile /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/profile
sed -i 's#ROOTHOME#/home/root#' /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/profile
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/shells /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/shells
install -m 0755 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/share/dot.profile /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/skel/.profile
install -m 0755 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/share/dot.bashrc /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/skel/.bashrc
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/nsswitch.conf /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/nsswitch.conf
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/host.conf /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/host.conf
install -m 0644 /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/motd /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/motd

ln -sf /proc/mounts /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/mtab
install -d /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/uboot
install -d /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/data
sed -i -e 's$.*@MENDER_BOOT_PART@.*$@MENDER_BOOT_PART@   /uboot               @MENDER_BOOT_PART_FSTYPE@       defaults,sync    0  0$' /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/fstab
sed -i -e 's$.*@MENDER_DATA_PART@.*$@MENDER_DATA_PART@   /data                @MENDER_DATA_PART_FSTYPE@       defaults         0  0$' /home/user/Desktop/yocto/build/tmp/work/raspberrypi3-poky-linux-gnueabi/base-files/3.0.14-r89/image/etc/fstab

}

然而，我的 /etc/fstab 看起来像这样：

# stock fstab - you probably want to override this with a machine specific one

/dev/root            /                    auto       defaults              1  1
proc                 /proc                proc       defaults              0  0
devpts               /dev/pts             devpts     mode=0620,gid=5       0  0
tmpfs                /run                 tmpfs      
mode=0755,nodev,nosuid,strictatime 0  0
tmpfs                /var/volatile        tmpfs      defaults              0  0

# uncomment this if your device has a SD/MMC/Transflash slot
#/dev/mmcblk0p1       /media/card          auto       defaults,sync,noauto  0  0

如您所见，它完全跳过了 meta-menders 的 /etc/fstab 文件，只写了一个 stock 文件。

Answer 1

那么，您的 sed 表达式中的 .*@MENDER_BOOT_PART@.* 的计算结果是什么？

据我所知，您的 fstab 中没有与 .*@MENDER_BOOT_PART@.* 和 .*@MENDER_DATA_PART@.* 中任何一个匹配的内容。

如果我的理解是正确的，你可以使用类似于

的东西

 echo "data" >> ${D}${sysconfdir}/fstab

自定义 bitbake bbapend 未正确附加 mender fstab 文件

Custom bitbake bbapend not correctly appending mender fstab file

linux

embedded

sed

bitbake

yocto