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image_types.bbclass: Populate cpio /init as symlink

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For cpio/ramfs the kernel will first attempt to execute /init and will
emit the following error as the file is empty:

    Failed to execute /init (error -13)

If /sbin/init exists symlink to it so the kernel can immediately start
the correct init executable instead of an empty file.

(From OE-Core rev: 3505558e067fdde4ab7aaaf3c50886f292d7c166)

(From OE-Core rev: 40bf6d0d71bd534fadcbc07b6fbba856e50bc534)

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Nathan Rossi
2014-12-09 15:50:05 +10:00
committed by Richard Purdie
parent 84d0b6fd98
commit 6540ecdb37
1 changed files with 5 additions and 1 deletions
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6
meta/classes/image_types.bbclass
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@@ -70,7 +70,11 @@ IMAGE_CMD_cpio () {
(cd ${IMAGE_ROOTFS} && find . | cpio -o -H newc >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio)
if [ ! -e ${IMAGE_ROOTFS}/init ]; then
mkdir -p ${WORKDIR}/cpio_append
touch ${WORKDIR}/cpio_append/init
if [ -e ${IMAGE_ROOTFS}/sbin/init -o -L ${IMAGE_ROOTFS}/sbin/init ]; then
ln -sf /sbin/init ${WORKDIR}/cpio_append/init
else
touch ${WORKDIR}/cpio_append/init
fi
(cd ${WORKDIR}/cpio_append && echo ./init | cpio -oA -H newc -F ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio)
fi
}