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authorAndré Draszik <adraszik@tycoint.com>2016-06-10 16:11:38 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2016-06-12 23:46:45 +0100
commit659ae1d7df28115429f6f31450fad6d1f86e3031 (patch)
tree037946a48e32d6cecb51fb44311b931060ace738
parent46708da7a69ce4d4b0709abe6b694d7f0bd4deb5 (diff)
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image/image_types.bbclass: fix fatal error during cpio debugfs creation
If /init is just a symlink to /sbin/init, debugfs creation fails with the following error: ERROR: Error: The image creation script '<...>/debugfs.create_image.cpio' returned 1: touch: cannot touch '<...>/cpio_append/init': Permission denied WARNING: exit code 1 from a shell command. ERROR: Function failed: do_rootfs The reason is that IMAGE_CMD_cpio() is run twice on the same WORKDIR. The first run creates a symlink in WORKDIR/cpio_append/init to point to /sbin/init, while the 2nd run then tries to 'touch' that link, which will fail, of course since /sbin/init is not usually writable by non-root users. Fix this by providing knowledge to the IMAGE_CMD_xxx() scripts with regards to the fact that they are being executed in the context of debugfs creation. The IMAGE_CMD_cpio() can now be intelligent in the sense that it can avoid all additional symlink handling during the debugfs run. The symlinks do not need to be part of the debugfs, so we can skip that part altogether in that case. Signed-off-by: André Draszik <adraszik@tycoint.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
-rw-r--r--meta/classes/image.bbclass1
-rw-r--r--meta/classes/image_types.bbclass19
2 files changed, 14 insertions, 6 deletions
diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 9f4c83ffc6..65ce6bb524 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -287,6 +287,7 @@ def setup_debugfs_variables(d):
d.appendVar('IMAGE_ROOTFS', '-dbg')
d.appendVar('IMAGE_LINK_NAME', '-dbg')
d.appendVar('IMAGE_NAME','-dbg')
+ d.setVar('IMAGE_BUILDING_DEBUGFS', 'true')
debugfs_image_fstypes = d.getVar('IMAGE_FSTYPES_DEBUGFS', True)
if debugfs_image_fstypes:
d.setVar('IMAGE_FSTYPES', debugfs_image_fstypes)
diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index ea45809a39..72e8ed34d5 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -101,13 +101,20 @@ IMAGE_CMD_tar = "${IMAGE_CMD_TAR} -cvf ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}${IMAGE_
do_image_cpio[cleandirs] += "${WORKDIR}/cpio_append"
IMAGE_CMD_cpio () {
(cd ${IMAGE_ROOTFS} && find . | cpio -o -H newc >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.cpio)
- if [ ! -L ${IMAGE_ROOTFS}/init -a ! -e ${IMAGE_ROOTFS}/init ]; then
- if [ -L ${IMAGE_ROOTFS}/sbin/init -o -e ${IMAGE_ROOTFS}/sbin/init ]; then
- ln -sf /sbin/init ${WORKDIR}/cpio_append/init
- else
- touch ${WORKDIR}/cpio_append/init
+ # We only need the /init symlink if we're building the real
+ # image. The -dbg image doesn't need it! By being clever
+ # about this we also avoid 'touch' below failing, as it
+ # might be trying to touch /sbin/init on the host since both
+ # the normal and the -dbg image share the same WORKDIR
+ if [ "${IMAGE_BUILDING_DEBUGFS}" != "true" ]; then
+ if [ ! -L ${IMAGE_ROOTFS}/init ] && [ ! -e ${IMAGE_ROOTFS}/init ]; then
+ if [ -L ${IMAGE_ROOTFS}/sbin/init ] || [ -e ${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}${IMAGE_NAME_SUFFIX}.cpio)
fi
- (cd ${WORKDIR}/cpio_append && echo ./init | cpio -oA -H newc -F ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.cpio)
fi
}