diff mbox series

[8/9] fscrypt: unexport fscrypt_get_encryption_info()

Message ID 20201125002336.274045-9-ebiggers@kernel.org
State Not Applicable
Headers show
Series Allow deleting files with unsupported encryption policy | expand

Commit Message

Eric Biggers Nov. 25, 2020, 12:23 a.m. UTC 
From: Eric Biggers <ebiggers@google.com>

Now that fscrypt_get_encryption_info() is only called from files in
fs/crypto/ (due to all key setup now being handled by higher-level
helper functions instead of directly by filesystems), unexport it and
move its declaration to fscrypt_private.h.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/crypto/fscrypt_private.h | 2 ++
 fs/crypto/keysetup.c        | 1 -
 include/linux/fscrypt.h     | 7 +------
 3 files changed, 3 insertions(+), 7 deletions(-)

Comments

Andreas Dilger Dec. 2, 2020, 10:55 p.m. UTC | #1 
> On Nov 24, 2020, at 5:23 PM, Eric Biggers <ebiggers@kernel.org> wrote:
> 
> From: Eric Biggers <ebiggers@google.com>
> 
> Now that fscrypt_get_encryption_info() is only called from files in
> fs/crypto/ (due to all key setup now being handled by higher-level
> helper functions instead of directly by filesystems), unexport it and
> move its declaration to fscrypt_private.h.
> 
> Signed-off-by: Eric Biggers <ebiggers@google.com>

Reviewed-by: Andreas Dilger <adilger@dilger.ca>

> ---
> fs/crypto/fscrypt_private.h | 2 ++
> fs/crypto/keysetup.c        | 1 -
> include/linux/fscrypt.h     | 7 +------
> 3 files changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h
> index 16dd55080127..c1c302656c34 100644
> --- a/fs/crypto/fscrypt_private.h
> +++ b/fs/crypto/fscrypt_private.h
> @@ -571,6 +571,8 @@ int fscrypt_derive_dirhash_key(struct fscrypt_info *ci,
> void fscrypt_hash_inode_number(struct fscrypt_info *ci,
> 			       const struct fscrypt_master_key *mk);
> 
> +int fscrypt_get_encryption_info(struct inode *inode);
> +
> /**
>  * fscrypt_require_key() - require an inode's encryption key
>  * @inode: the inode we need the key for
> diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c
> index 50675b42d5b7..6339b3069a40 100644
> --- a/fs/crypto/keysetup.c
> +++ b/fs/crypto/keysetup.c
> @@ -589,7 +589,6 @@ int fscrypt_get_encryption_info(struct inode *inode)
> 		res = 0;
> 	return res;
> }
> -EXPORT_SYMBOL(fscrypt_get_encryption_info);
> 
> /**
>  * fscrypt_prepare_new_inode() - prepare to create a new inode in a directory
> diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
> index a07610f27926..4b163f5e58e9 100644
> --- a/include/linux/fscrypt.h
> +++ b/include/linux/fscrypt.h
> @@ -75,7 +75,7 @@ struct fscrypt_operations {
> static inline struct fscrypt_info *fscrypt_get_info(const struct inode *inode)
> {
> 	/*
> -	 * Pairs with the cmpxchg_release() in fscrypt_get_encryption_info().
> +	 * Pairs with the cmpxchg_release() in fscrypt_setup_encryption_info().
> 	 * I.e., another task may publish ->i_crypt_info concurrently, executing
> 	 * a RELEASE barrier.  We need to use smp_load_acquire() here to safely
> 	 * ACQUIRE the memory the other task published.
> @@ -200,7 +200,6 @@ int fscrypt_ioctl_remove_key_all_users(struct file *filp, void __user *arg);
> int fscrypt_ioctl_get_key_status(struct file *filp, void __user *arg);
> 
> /* keysetup.c */
> -int fscrypt_get_encryption_info(struct inode *inode);
> int fscrypt_prepare_new_inode(struct inode *dir, struct inode *inode,
> 			      bool *encrypt_ret);
> void fscrypt_put_encryption_info(struct inode *inode);
> @@ -408,10 +407,6 @@ static inline int fscrypt_ioctl_get_key_status(struct file *filp,
> }
> 
> /* keysetup.c */
> -static inline int fscrypt_get_encryption_info(struct inode *inode)
> -{
> -	return -EOPNOTSUPP;
> -}
> 
> static inline int fscrypt_prepare_new_inode(struct inode *dir,
> 					    struct inode *inode,
> --
> 2.29.2
> 


Cheers, Andreas
diff mbox series

Patch

diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h
index 16dd55080127..c1c302656c34 100644
--- a/fs/crypto/fscrypt_private.h
+++ b/fs/crypto/fscrypt_private.h
@@ -571,6 +571,8 @@  int fscrypt_derive_dirhash_key(struct fscrypt_info *ci,
 void fscrypt_hash_inode_number(struct fscrypt_info *ci,
 			       const struct fscrypt_master_key *mk);
 
+int fscrypt_get_encryption_info(struct inode *inode);
+
 /**
  * fscrypt_require_key() - require an inode's encryption key
  * @inode: the inode we need the key for
diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c
index 50675b42d5b7..6339b3069a40 100644
--- a/fs/crypto/keysetup.c
+++ b/fs/crypto/keysetup.c
@@ -589,7 +589,6 @@  int fscrypt_get_encryption_info(struct inode *inode)
 		res = 0;
 	return res;
 }
-EXPORT_SYMBOL(fscrypt_get_encryption_info);
 
 /**
  * fscrypt_prepare_new_inode() - prepare to create a new inode in a directory
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index a07610f27926..4b163f5e58e9 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -75,7 +75,7 @@  struct fscrypt_operations {
 static inline struct fscrypt_info *fscrypt_get_info(const struct inode *inode)
 {
 	/*
-	 * Pairs with the cmpxchg_release() in fscrypt_get_encryption_info().
+	 * Pairs with the cmpxchg_release() in fscrypt_setup_encryption_info().
 	 * I.e., another task may publish ->i_crypt_info concurrently, executing
 	 * a RELEASE barrier.  We need to use smp_load_acquire() here to safely
 	 * ACQUIRE the memory the other task published.
@@ -200,7 +200,6 @@  int fscrypt_ioctl_remove_key_all_users(struct file *filp, void __user *arg);
 int fscrypt_ioctl_get_key_status(struct file *filp, void __user *arg);
 
 /* keysetup.c */
-int fscrypt_get_encryption_info(struct inode *inode);
 int fscrypt_prepare_new_inode(struct inode *dir, struct inode *inode,
 			      bool *encrypt_ret);
 void fscrypt_put_encryption_info(struct inode *inode);
@@ -408,10 +407,6 @@  static inline int fscrypt_ioctl_get_key_status(struct file *filp,
 }
 
 /* keysetup.c */
-static inline int fscrypt_get_encryption_info(struct inode *inode)
-{
-	return -EOPNOTSUPP;
-}
 
 static inline int fscrypt_prepare_new_inode(struct inode *dir,
 					    struct inode *inode,