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ANDROID: block: Prevent crypto fallback for wrapped keys

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blk-crypto-fallback does not support wrapped keys, hence
prevent falling back when program_key fails. Add 'is_hw_wrapped'
flag to blk-crypto-key to mention if the key is wrapped
when the key is initialized.

Bug: 147209885

Test: Validate FBE, simulate a failure in the underlying blk
      device and ensure the call fails without falling back
      to blk-crypto-fallback.

Change-Id: I8bc301ca1ac9e55ba6ab622e8325486916b45c56
Signed-off-by: Barani Muthukumaran <bmuthuku@codeaurora.org>
This commit is contained in:
Barani Muthukumaran
2020-02-06 18:01:20 -08:00
committed by Todd Kjos
parent b92241fa92
commit f5ecdc54d7
9 changed files with 37 additions and 14 deletions
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include/linux/blk-crypto.h
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@@ -16,6 +16,7 @@ bool blk_crypto_endio(struct bio *bio);
int blk_crypto_init_key(struct blk_crypto_key *blk_key,
const u8 *raw_key, unsigned int raw_key_size,
bool is_hw_wrapped,
enum blk_crypto_mode_num crypto_mode,
unsigned int data_unit_size);