cve-check.bbclass: Mitigate symlink related error

According to Yocto reference manual, in description of the
IMAGE_LINK_NAME variable, it is said that

  It is possible to set this to "" to disable symlink creation,
  however, you also need to set :term:`IMAGE_NAME` to still have
  a reasonable value e.g.::

    IMAGE_LINK_NAME = ""
    IMAGE_NAME = "${IMAGE_BASENAME}${IMAGE_MACHINE_SUFFIX}${IMAGE_VERSION_SUFFIX}"

However, when using following additions in local.conf file:

  INHERIT += "cve-check"
  IMAGE_LINK_NAME = ""
  IMAGE_NAME = "${IMAGE_BASENAME}${IMAGE_MACHINE_SUFFIX}${IMAGE_VERSION_SUFFIX}"

the implicit symlink creation in cve_check_write_rootfs_manifest leads
to following build failure

  $ bitbake core-image-minimal core-image-base
  ...
  ERROR: core-image-base-1.0-r0 do_image_complete: Recipe core-image-base is trying to install files into a shared area when those files already exist. The files and the manifests listing them are:
    /home/poky/build/tmp/deploy/images/qemux86-64/.json
      (matched in manifest-qemux86_64-core-image-minimal.image_complete)
  Please adjust the recipes so only one recipe provides a given file.

Mitigate the issue by creating the symlink only in case IMAGE_LINK_NAME
has not been set to empty string.

(From OE-Core rev: 64bfec359bd909761ce0a6a716286d938ed162d1)

(From OE-Core rev: 35e210e3ebe21f1f4466760076b7140618af536e)

Signed-off-by: Niko Mauno <niko.mauno@vaisala.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/meta/classes/cve-check.bbclass b/meta/classes/cve-check.bbclass
index ed219bf472..badfee550c 100644
--- a/meta/classes/cve-check.bbclass
+++ b/meta/classes/cve-check.bbclass
@@ -281,13 +281,15 @@ python cve_check_write_rootfs_manifest () {
 
     if enable_json:
         manifest_name_suffix = d.getVar("CVE_CHECK_MANIFEST_JSON_SUFFIX")
-        link_path = os.path.join(deploy_dir, "%s.%s" % (link_name, manifest_name_suffix))
         manifest_name = d.getVar("CVE_CHECK_MANIFEST_JSON")
 
         with open(manifest_name, "w") as f:
             json.dump(json_data, f, indent=2)
 
-        update_symlinks(manifest_name, link_path)
+        if link_name:
+            link_path = os.path.join(deploy_dir, "%s.%s" % (link_name, manifest_name_suffix))
+            update_symlinks(manifest_name, link_path)
+
         bb.plain("Image CVE JSON report stored in: %s" % manifest_name)
 }