diff options
| author | Eric Biggers <ebiggers@google.com> | 2020-09-16 21:11:33 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2020-09-22 06:48:44 -0700 |
| commit | c7f0207b613033c56b1217032d2f6326d0c69217 (patch) | |
| tree | f521e25c106fbf65d80541730febe15179edad84 /fs/crypto/fscrypt_private.h | |
| parent | 9dad5feb49a5c3b99838b102555cdbedf244320a (diff) | |
fscrypt: make "#define fscrypt_policy" user-only
The fscrypt UAPI header defines fscrypt_policy to fscrypt_policy_v1,
for source compatibility with old userspace programs.
Internally, the kernel doesn't want that compatibility definition.
Instead, fscrypt_private.h #undefs it and re-defines it to a union.
That works for now. However, in order to add
fscrypt_operations::get_dummy_policy(), we'll need to forward declare
'union fscrypt_policy' in include/linux/fscrypt.h. That would cause
build errors because "fscrypt_policy" is used in ioctl numbers.
To avoid this, modify the UAPI header to make the fscrypt_policy
compatibility definition conditional on !__KERNEL__, and make the ioctls
use fscrypt_policy_v1 instead of fscrypt_policy.
Note that this doesn't change the actual ioctl numbers.
Acked-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20200917041136.178600-11-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'fs/crypto/fscrypt_private.h')
| -rw-r--r-- | fs/crypto/fscrypt_private.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h index 355f6d937751..ac3352086ee4 100644 --- a/fs/crypto/fscrypt_private.h +++ b/fs/crypto/fscrypt_private.h @@ -97,7 +97,6 @@ static inline const u8 *fscrypt_context_nonce(const union fscrypt_context *ctx) return NULL; } -#undef fscrypt_policy union fscrypt_policy { u8 version; struct fscrypt_policy_v1 v1; |