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| author | Michael Halcrow <mhalcrow@google.com> | 2015-04-12 07:56:10 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-04-12 07:56:10 +0300 |
| commit | c9c7429c2e486f375bddd0c338cc3ad366123717 (patch) | |
| tree | b9cc5749676e272856e930f3086e4965839c44ea /fs/ext4/inode.c | |
| parent | 2058f83a728adffbe00bded4f804b37a5ee58cbe (diff) | |
| download | linux-c9c7429c2e486f375bddd0c338cc3ad366123717.tar.xz | |
ext4 crypto: implement the ext4 decryption read path
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Ildar Muslukhov <ildarm@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 7c4527e10ae4..8b4fe626919a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3370,6 +3370,13 @@ static int __ext4_block_zero_page_range(handle_t *handle, /* Uhhuh. Read error. Complain and punt. */ if (!buffer_uptodate(bh)) goto unlock; + if (S_ISREG(inode->i_mode) && + ext4_encrypted_inode(inode)) { + /* We expect the key to be set. */ + BUG_ON(!ext4_has_encryption_key(inode)); + BUG_ON(blocksize != PAGE_CACHE_SIZE); + WARN_ON_ONCE(ext4_decrypt_one(inode, page)); + } } if (ext4_should_journal_data(inode)) { BUFFER_TRACE(bh, "get write access"); |