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fscrypt: remove fscrypt_inherit_context() 

Now that all filesystems have been converted to use
fscrypt_prepare_new_inode() and fscrypt_set_context(),
fscrypt_inherit_context() is no longer used.  Remove it.

Acked-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20200917041136.178600-8-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers 2020-09-16 21:11:30 -07:00
parent ae9ff8ad81
commit e9d5e31d2f
2 changed files with 0 additions and 46 deletions
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37
fs/crypto/policy.c
View File

@ -628,43 +628,6 @@ int fscrypt_has_permitted_context(struct inode *parent, struct inode *child)
}
EXPORT_SYMBOL(fscrypt_has_permitted_context);
/**
* fscrypt_inherit_context() - Sets a child context from its parent
* @parent: Parent inode from which the context is inherited.
* @child: Child inode that inherits the context from @parent.
* @fs_data: private data given by FS.
* @preload: preload child i_crypt_info if true
*
* Return: 0 on success, -errno on failure
*/
int fscrypt_inherit_context(struct inode *parent, struct inode *child,
void *fs_data, bool preload)
{
u8 nonce[FSCRYPT_FILE_NONCE_SIZE];
union fscrypt_context ctx;
int ctxsize;
struct fscrypt_info *ci;
int res;
res = fscrypt_get_encryption_info(parent);
if (res < 0)
return res;
ci = fscrypt_get_info(parent);
if (ci == NULL)
return -ENOKEY;
get_random_bytes(nonce, FSCRYPT_FILE_NONCE_SIZE);
ctxsize = fscrypt_new_context(&ctx, &ci->ci_policy, nonce);
BUILD_BUG_ON(sizeof(ctx) != FSCRYPT_SET_CONTEXT_MAX_SIZE);
res = parent->i_sb->s_cop->set_context(child, &ctx, ctxsize, fs_data);
if (res)
return res;
return preload ? fscrypt_get_encryption_info(child): 0;
}
EXPORT_SYMBOL(fscrypt_inherit_context);
/**
* fscrypt_set_context() - Set the fscrypt context of a new inode
* @inode: a new inode

9
include/linux/fscrypt.h
View File

@ -156,8 +156,6 @@ int fscrypt_ioctl_get_policy(struct file *filp, void __user *arg);
int fscrypt_ioctl_get_policy_ex(struct file *filp, void __user *arg);
int fscrypt_ioctl_get_nonce(struct file *filp, void __user *arg);
int fscrypt_has_permitted_context(struct inode *parent, struct inode *child);
int fscrypt_inherit_context(struct inode *parent, struct inode *child,
void *fs_data, bool preload);
int fscrypt_set_context(struct inode *inode, void *fs_data);
struct fscrypt_dummy_context {
@ -343,13 +341,6 @@ static inline int fscrypt_has_permitted_context(struct inode *parent,
return 0;
}
static inline int fscrypt_inherit_context(struct inode *parent,
struct inode *child,
void *fs_data, bool preload)
{
return -EOPNOTSUPP;
}
static inline int fscrypt_set_context(struct inode *inode, void *fs_data)
{
return -EOPNOTSUPP;