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fscrypt: split supp and notsupp declarations into their own headers

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Previously, each filesystem configured without encryption support would
define all the public fscrypt functions to their notsupp_* stubs.  This
list of #defines had to be updated in every filesystem whenever a change
was made to the public fscrypt functions.  To make things more
maintainable now that we have three filesystems using fscrypt, split the
old header fscrypto.h into several new headers.  fscrypt_supp.h contains
the real declarations and is included by filesystems when configured
with encryption support, whereas fscrypt_notsupp.h contains the inline
stubs and is included by filesystems when configured without encryption
support.  fscrypt_common.h contains common declarations needed by both.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Eric Biggers
2017-01-24 10:58:06 -08:00
committed by Theodore Ts'o
parent 02680b31a0
commit 46f47e4800
10 changed files with 397 additions and 421 deletions
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fs/crypto/fscrypt_private.h
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@@ -11,7 +11,7 @@
#ifndef _FSCRYPT_PRIVATE_H
#define _FSCRYPT_PRIVATE_H
#include <linux/fscrypto.h>
#include <linux/fscrypt_supp.h>
#define FS_FNAME_CRYPTO_DIGEST_SIZE 32