Make get_policy show the data unit size

Display the data unit size based on the field fscrypt_policy_v2::log2_data_unit_size, new in Linux v6.7.
google · Oct 2, 2023 · cc4d85b · cc4d85b
1 parent 2327468
commit cc4d85b
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/fscryptctl.c b/fscryptctl.c
@@ -598,6 +598,11 @@ static void show_v2_encryption_policy(const struct fscrypt_policy_v2 *policy) {
   show_encryption_mode(policy->contents_encryption_mode, "Contents");
   show_encryption_mode(policy->filenames_encryption_mode, "Filenames");
   show_policy_flags(policy->flags);
+  if (policy->log2_data_unit_size) {
+    printf("\tData unit size: %u\n", 1U << policy->log2_data_unit_size);
+  } else {
+    printf("\tData unit size: default\n");
+  }
 }
 
 // For a specified file or directory with encryption enabled, print the

diff --git a/test.py b/test.py
@@ -149,7 +149,8 @@ def describe_policy(path=TEST_DIR, key=TEST_KEY, contents="AES-256-XTS",
     out += "\tMaster key identifier: {}\n".format(key["identifier"])
     out += "\tContents encryption mode: {}\n".format(contents)
     out += "\tFilenames encryption mode: {}\n".format(filenames)
-    out += "\tFlags: {}".format(flags)
+    out += "\tFlags: {}\n".format(flags)
+    out += "\tData unit size: default"
     return out