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-rwxr-xr-xdebian/bin/update-modinfo60
1 files changed, 60 insertions, 0 deletions
diff --git a/debian/bin/update-modinfo b/debian/bin/update-modinfo
new file mode 100755
index 0000000..64a27cc
--- /dev/null
+++ b/debian/bin/update-modinfo
@@ -0,0 +1,60 @@
+#!/usr/bin/python3
+
+# Update the module information used to generate related device IDs
+
+import json
+import os.path
+import subprocess
+import sys
+
+
+def iter_modules(base_dir):
+ def onerror(e):
+ raise e
+ for root, dirs, files in \
+ os.walk(os.path.join(base_dir, 'kernel'), onerror=onerror):
+ for name in files:
+ if name.endswith('.ko'):
+ yield name[:-3], os.path.join(root, name)
+
+
+def get_module_info(filename, attr_name):
+ output = subprocess.check_output(['modinfo', '-F', attr_name, filename],
+ text=True)
+ if output == '':
+ return []
+ return output.rstrip('\n').split('\n')
+
+
+def main(kernel_id=None):
+ if kernel_id is None:
+ kernel_dir = '/lib/modules/' + os.uname().release
+ elif '/' not in kernel_id:
+ kernel_dir = '/lib/modules/' + kernel_id
+ else:
+ kernel_dir = kernel_id
+
+ modinfo = {}
+ for name, filename in iter_modules(kernel_dir):
+ # We only care about modules that might request firmware
+ firmware = get_module_info(filename, 'firmware')
+ if not firmware:
+ continue
+
+ # We only care about aliases generated from device IDs, which
+ # start with <type> ":"
+ aliases = [alias
+ for alias in get_module_info(filename, 'alias')
+ if ':' in alias]
+
+ modinfo[name] = {
+ 'alias': aliases,
+ 'firmware': firmware,
+ }
+
+ with open('debian/modinfo.json', 'w') as f:
+ json.dump(modinfo, f, indent=2, sort_keys=True)
+
+
+if __name__ == '__main__':
+ main(*sys.argv[1:])