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| author | Eric Biggers <ebiggers@google.com> | 2017-02-22 13:25:14 -0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2017-03-15 14:15:47 -0400 |
| commit | 94840e3c802daa1a62985957f36ac48faf8ceedd (patch) | |
| tree | 09901080ff440233d2c092bd51a2aa296a2d9710 /fs | |
| parent | 1b53cf9815bb4744958d41f3795d5d5a1d365e2d (diff) | |
| download | op-kernel-dev-94840e3c802daa1a62985957f36ac48faf8ceedd.zip op-kernel-dev-94840e3c802daa1a62985957f36ac48faf8ceedd.tar.gz | |
fscrypt: eliminate ->prepare_context() operation
The only use of the ->prepare_context() fscrypt operation was to allow
ext4 to evict inline data from the inode before ->set_context().
However, there is no reason why this cannot be done as simply the first
step in ->set_context(), and in fact it makes more sense to do it that
way because then the policy modes and flags get validated before any
real work is done. Therefore, merge ext4_prepare_context() into
ext4_set_context(), and remove ->prepare_context().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/crypto/policy.c | 7 | ||||
| -rw-r--r-- | fs/ext4/super.c | 10 |
2 files changed, 4 insertions, 13 deletions
diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index 14b76da..4908906 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -33,17 +33,10 @@ static int create_encryption_context_from_policy(struct inode *inode, const struct fscrypt_policy *policy) { struct fscrypt_context ctx; - int res; if (!inode->i_sb->s_cop->set_context) return -EOPNOTSUPP; - if (inode->i_sb->s_cop->prepare_context) { - res = inode->i_sb->s_cop->prepare_context(inode); - if (res) - return res; - } - ctx.format = FS_ENCRYPTION_CONTEXT_FORMAT_V1; memcpy(ctx.master_key_descriptor, policy->master_key_descriptor, FS_KEY_DESCRIPTOR_SIZE); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 2e03a0a..a9448db 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1120,17 +1120,16 @@ static int ext4_get_context(struct inode *inode, void *ctx, size_t len) EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len); } -static int ext4_prepare_context(struct inode *inode) -{ - return ext4_convert_inline_data(inode); -} - static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, void *fs_data) { handle_t *handle = fs_data; int res, res2, retries = 0; + res = ext4_convert_inline_data(inode); + if (res) + return res; + /* * If a journal handle was specified, then the encryption context is * being set on a new inode via inheritance and is part of a larger @@ -1196,7 +1195,6 @@ static unsigned ext4_max_namelen(struct inode *inode) static const struct fscrypt_operations ext4_cryptops = { .key_prefix = "ext4:", .get_context = ext4_get_context, - .prepare_context = ext4_prepare_context, .set_context = ext4_set_context, .dummy_context = ext4_dummy_context, .is_encrypted = ext4_encrypted_inode, |
