Hello list,
I currently migrate our project from warrior to dunfell and we experience
some issues during the image generation step.
We have a custom IMAGE_FSTYPES to meet our need and in one of our custom
steps is to copy the rootfs (populated during yocto do_rootfs step) into a
custom dir and act on it (reorganizing tree and making a squash file
system).
I'm experiencing an issue on file ownership preservation that I didn't have
in warrior.
We use rsync to copy the rootfs tree to another location (via multiple
option, including the -a one which preserve ownership) and during that
step, I see a lot of:
```
rsync: chown "<MY/DEST/PATH/>" failed: Operation not permitted (1)
```
The files and directories are nevertheless copied (but of course.
To investigate further I do a devshell and reproduce the issue via a simple
'cp -a' (which also preserve ownership of files) and see the same king of
ownership preservation problems:
```
root@SGX-CMP-776:${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/tapos-image-1.0#
ll ${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/rootfs/bin/arping
-rwxr-xr-x 1 root root 22680 Mar 9 2018
${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/rootfs/bin/arping*
root@SGX-CMP-776
:${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/tapos-image-1.0#
root@SGX-CMP-776:${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/tapos-image-1.0#
cp -a
${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/rootfs/bin/arping .
cp: failed to preserve ownership for './arping': Operation not permitted
root@SGX-CMP-776:${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/tapos-image-1.0#
ll arping
-rwx------ 1 1000 1000 22680 Mar 9 2018 arping*
root@SGX-CMP-776:${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/tapos-image-1.0#
id
uid=0(root) gid=0(root) groups=0(root)
```
During devshell'ed session, the rootfs populated by do_rootfs is seen as
root user (while the real user is me with uid 1000) , I guess this is due
to the fact that the images step is run under pseudo and fakes user/group.
What I can't understand is why pseudo (or something else) doesn't do the
same with my file copy ?
```
root@SGX-CMP-776:${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/tapos-image-1.0#
ll ${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/rootfs/
total 72
drwxr-xr-x 17 root root 4096 Nov 1 05:38 ./
drwxr-xr-x 12 1000 1000 4096 Nov 1 05:38 ../
drwxr-xr-x 2 root root 4096 Mar 9 2018 bin/
drwxr-xr-x 2 root root 4096 Mar 9 2018 boot/
drwxr-xr-x 2 root root 4096 Mar 9 2018 dev/
drwxr-xr-x 38 root root 4096 Nov 1 05:38 etc/
lrwxrwxrwx 1 root root 8 Nov 1 05:38 home -> /rw/home
drwxr-xr-x 8 root root 4096 Mar 9 2018 lib/
lrwxrwxrwx 1 root root 19 Mar 9 2018 linuxrc -> /bin/busybox.nosuid
drwxr-xr-x 2 root root 4096 Mar 9 2018 media/
drwxr-xr-x 2 root root 4096 Mar 9 2018 mnt/
dr-xr-xr-x 2 root root 4096 Mar 9 2018 proc/
drwxr-xr-x 2 root root 4096 Mar 9 2018 run/
drwxr-xr-x 5 root root 4096 Nov 1 05:38 .rw_skeleton/
drwxr-xr-x 2 root root 4096 Mar 9 2018 sbin/
dr-xr-xr-x 2 root root 4096 Mar 9 2018 sys/
-rw-r--r-- 1 root root 149 Mar 9 2018 .tapos.manifest
drwxrwxrwt 2 root root 4096 Mar 9 2018 tmp/
drwxr-xr-x 10 root root 4096 Mar 9 2018 usr/
drwxr-xr-x 7 root root 4096 Nov 1 05:38 var/
fmartinsons@SGX-CMP-776:~$ ll
${TMPDIR}/work/aimb231-tapos-linux/tapos-image/1.0-r0/rootfs/
total 72
drwxr-xr-x 17 fmartinsons fmartinsons 4096 nov. 1 06:38 ./
drwxr-xr-x 12 fmartinsons fmartinsons 4096 nov. 1 06:38 ../
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 bin/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 boot/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 dev/
drwxr-xr-x 38 fmartinsons fmartinsons 4096 nov. 1 06:38 etc/
lrwxrwxrwx 1 fmartinsons fmartinsons 8 nov. 1 06:38 home -> /rw/home
drwxr-xr-x 8 fmartinsons fmartinsons 4096 mars 9 2018 lib/
lrwxrwxrwx 1 fmartinsons fmartinsons 19 mars 9 2018 linuxrc ->
/bin/busybox.nosuid
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 media/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 mnt/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 proc/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 run/
drwxr-xr-x 5 fmartinsons fmartinsons 4096 nov. 1 06:38 .rw_skeleton/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 sbin/
drwxr-xr-x 2 fmartinsons fmartinsons 4096 mars 9 2018 sys/
-rw-r--r-- 1 fmartinsons fmartinsons 149 mars 9 2018 .tapos.manifest
drwxr-xr-t 2 fmartinsons fmartinsons 4096 mars 9 2018 tmp/
drwxr-xr-x 10 fmartinsons fmartinsons 4096 mars 9 2018 usr/
drwxr-xr-x 7 fmartinsons fmartinsons 4096 nov. 1 06:38 var/
fmartinsons@SGX-CMP-776:~$ id
uid=1000(fmartinsons) gid=1000(fmartinsons) groups=1000(fmartinsons)
```
Am I missing something about pseudo usage ? And if so, why did these copy
operations work perfectly within warrior branch ?
Has anyone already experienced this before ? Can someone help me with this
issue ?
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