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fscrypt: constify struct fscrypt_hkdf parameter to fscrypt_hkdf_expand()

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Constify the struct fscrypt_hkdf parameter to fscrypt_hkdf_expand().
This makes it clearer that struct fscrypt_hkdf contains the key only,
not any per-request state.

Link: https://lore.kernel.org/r/20191209204054.227736-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers
2019-12-09 12:40:54 -08:00
parent c64cfb989f
commit 2a5831b1d2
2 changed files with 2 additions and 2 deletions
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2
fs/crypto/hkdf.c
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@@ -112,7 +112,7 @@ out:
* adds to its application-specific info strings to guarantee that it doesn't
* accidentally repeat an info string when using HKDF for different purposes.)
*/
int fscrypt_hkdf_expand(struct fscrypt_hkdf *hkdf, u8 context,
int fscrypt_hkdf_expand(const struct fscrypt_hkdf *hkdf, u8 context,
const u8 *info, unsigned int infolen,
u8 *okm, unsigned int okmlen)
{