cmd/fscrypt: fix isDirUnlockedHeuristic() on latest kernels #263
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On an "incompletely locked" directory, isDirUnlockedHeuristic() is supposed to return true, but on Linux v5.10-rc1 and later it returns false since now creating a subdirectory fails rather than succeeds. This change was intentional, so make isDirUnlockedHeuristic() apply a second heuristic too: also return true if any filenames in the directory don't appear to be valid no-key names. This fixes cli-tests/t_v1_encrypt on Linux v5.10-rc1 and later.
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On an "incompletely locked" directory, isDirUnlockedHeuristic() is
supposed to return true, but on Linux v5.10-rc1 and later it returns
false since now creating a subdirectory fails rather than succeeds.
This change was intentional, so make isDirUnlockedHeuristic() apply a
second heuristic too: also return true if any filenames in the directory
don't appear to be valid no-key names.
This fixes cli-tests/t_v1_encrypt on Linux v5.10-rc1 and later.