1 files changed, 65 insertions, 0 deletions
diff --git a/classes/toradex-sanity.bbclass b/classes/toradex-sanity.bbclass
new file mode 100644
index 0000000..bfb95f3
--- /dev/null
+++ b/classes/toradex-sanity.bbclass
@@ -0,0 +1,65 @@
+# Sanity check the Toradex setup for common misconfigurations
+
+TORADEX_SANITY_ABIFILE ?= "${DEPLOY_DIR}/abi_version"
+
+#
+# Check the 'ABI' of DEPLOY_DIR
+#
+def toradex_check_abichanges(status, d):
+    current_abi = d.getVar('OELAYOUT_ABI')
+    abifile = d.getVar('TORADEX_SANITY_ABIFILE')
+    if os.path.exists(abifile):
+        with open(abifile, "r") as f:
+            abi = f.read().strip()
+        if not abi.isdigit():
+            with open(abifile, "w") as f:
+                f.write(current_abi)
+        elif (abi != current_abi):
+            # Code to convert from one ABI to another could go here if possible.
+            status.addresult("Error, DEPLOY_DIR has changed its layout version number (%s to %s) and you need to either rebuild, revert or adjust it at your own risk.\n" % (abi, current_abi))
+    else:
+        bb.utils.mkdirhier(os.path.dirname(abifile))
+        with open(abifile, "w") as f:
+            f.write(current_abi)
+
+def toradex_raise_sanity_error(msg, d):
+    if d.getVar("SANITY_USE_EVENTS") == "1":
+        bb.event.fire(bb.event.SanityCheckFailed(msg), d)
+        return
+
+    bb.fatal("Toradex' config sanity checker detected a potential misconfiguration.\n"
+             "Please fix the cause of this error then you can continue to build.\n"
+             "Following is the list of potential problems / advisories:\n"
+             "\n%s" % msg)
+
+def toradex_check_sanity(sanity_data):
+    class SanityStatus(object):
+        def __init__(self):
+            self.messages = ""
+            self.reparse = False
+
+        def addresult(self, message):
+            if message:
+                self.messages = self.messages + message
+
+    status = SanityStatus()
+
+    toradex_check_abichanges(status, sanity_data)
+
+    if status.messages != "":
+        toradex_raise_sanity_error(sanity_data.expand(status.messages), sanity_data)
+
+addhandler toradex_check_sanity_eventhandler
+toradex_check_sanity_eventhandler[eventmask] = "bb.event.SanityCheck"
+
+python toradex_check_sanity_eventhandler() {
+    if bb.event.getName(e) == "SanityCheck":
+        sanity_data = bb.data.createCopy(e.data)
+        if e.generateevents:
+            sanity_data.setVar("SANITY_USE_EVENTS", "1")
+        reparse = toradex_check_sanity(sanity_data)
+        e.data.setVar("BB_INVALIDCONF", reparse)
+        bb.event.fire(bb.event.SanityCheckPassed(), e.data)
+
+    return
+}