image_types.bbclass: manage 'cpio_append' directory
For cpio images, do_rootfs() can operate on a dirty '${WORKDIR}/cpio_append'
directory which contains e.g. files from previous builds. This can cause
unwanted files in the image or can break the build.
E.g. when there is a cpio_append/init -> /sbin/init symlink symlink, the
'ln -sf' can fail due to SELinux restrictions:
| $ ls -la cpio_append/init
| lrwxrwxrwx. 1 ensc ensc 10 22. Jan 16:26 cpio_append/init -> /sbin/init
|
| $ strace ln -sf /sbin/init cpio_append/init
| ...
| stat("cpio_append/init", 0x7fffbb9ca310) = -1 EACCES (Permission denied)
| exit_group(1) = ?
Patch cleans up 'cpio_append' before executing the 'do_rootfs' task by
adding it to 'cleandirs'. An alternative implementation (which avoids
creation of this empty dir for non-cpio images) might remove it within
IMAGE_CMD_cpio, but this might break builds where people rely on the
existence of this directory (e.g. to add local files).
(From OE-Core rev:
4db3cc2360289c062fa0df4678f2f2ef990f0c1a)
Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
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>
