deviceinfo: add and require _codename (!1732)

deviceinfo_codneame holds the device's code name, so we can easily look
it up in the finished postmarketOS installation by reading
/etc/deviceinfo.

Related: postmarketOS/pmaports#157

pmb/aportgen/device.py

@@ -127,6 +127,7 @@ def generate_deviceinfo_fastboot_content(args, bootimg=None):
 
 def generate_deviceinfo(args, pkgname, name, manufacturer, arch, has_keyboard,
                         has_external_storage, flash_method, bootimg=None):
+    codename = "-".join(pkgname.split("-")[1:])
     # Note: New variables must be added to pmb/config/__init__.py as well
     content = """\
         # Reference: <https://postmarketos.org/deviceinfo>
@@ -135,6 +136,7 @@ def generate_deviceinfo(args, pkgname, name, manufacturer, arch, has_keyboard,
         deviceinfo_format_version="0"
         deviceinfo_name=\"""" + name + """\"
         deviceinfo_manufacturer=\"""" + manufacturer + """\"
+        deviceinfo_codename=\"""" + codename + """\"
         deviceinfo_date=""
         deviceinfo_dtb=""
         deviceinfo_modules_initfs=""

pmb/config/__init__.py

@@ -225,6 +225,7 @@ deviceinfo_attributes = [
     "format_version",
     "name",
     "manufacturer",
+    "codename",
     "date",
     "dtb",
     "modules_initfs",

pmb/parse/deviceinfo.py

@@ -42,6 +42,12 @@ def sanity_check(info, path):
                            " delete the deviceinfo_msm_refresher line in: " +
                            path)
 
+    # "codename" is required
+    codename = os.path.basename(os.path.dirname(path)).replace("device-", "")
+    if "codename" not in info or info["codename"] != codename:
+        raise RuntimeError("Please add 'deviceinfo_codename=\"" + codename +
+                           "\"' to: " + path)
+
 
 def deviceinfo(args, device=None):
     """