sstate.bbclass: Fetch non-existing local .sig files if needed

For the case of a global shared state cache and a local sstate cache
with a mix of signed and un-signed entries, there is a case where
a .sig is missing locally, but may exist in the global sstate cache.

For this case, do not just fail sstate fetch, but rather backfill
the .sig file from the global sstate cache.

If this case is detected, re-run the fetch operation to get the
global .sig file (if it exists).

Signed-off-by: Tobias Hagelborn <tobias.hagelborn@axis.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes-global/sstate.bbclass b/meta/classes-global/sstate.bbclass
index 77e3ea34e16b0000f91919c7b838ee4ec194f662..567de4aba4da3420fd28cefa56110d2c540f4249 100644 (file)
--- a/meta/classes-global/sstate.bbclass
+++ b/meta/classes-global/sstate.bbclass
@@ -365,8 +365,9 @@ def sstate_installpkg(ss, d):
     d.setVar("SSTATE_CURRTASK", ss['task'])
     sstatefetch = d.getVar('SSTATE_PKGNAME')
     sstatepkg = d.getVar('SSTATE_PKG')
+    verify_sig = bb.utils.to_boolean(d.getVar("SSTATE_VERIFY_SIG"), False)
 
-    if not os.path.exists(sstatepkg):
+    if not os.path.exists(sstatepkg) or (verify_sig and not os.path.exists(sstatepkg + '.sig')):
         pstaging_fetch(sstatefetch, d)
 
     if not os.path.isfile(sstatepkg):
@@ -377,7 +378,7 @@ def sstate_installpkg(ss, d):
 
     d.setVar('SSTATE_INSTDIR', sstateinst)
 
-    if bb.utils.to_boolean(d.getVar("SSTATE_VERIFY_SIG"), False):
+    if verify_sig:
         if not os.path.isfile(sstatepkg + '.sig'):
             bb.warn("No signature file for sstate package %s, skipping acceleration..." % sstatepkg)
             return False