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| author | David Gstir <david@sigma-star.at> | 2016-11-13 22:20:44 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2016-11-13 18:47:04 -0500 |
| commit | 1c7dcf69eea3224474fe884a03b3e19b82d1101e (patch) | |
| tree | b2d64ef7305d32d4da2fc45946a980ee85a212cc /include | |
| parent | bc33b0ca11e3df467777a4fa7639ba488c9d4911 (diff) | |
| download | linux-1c7dcf69eea3224474fe884a03b3e19b82d1101e.tar.bz2 | |
fscrypt: Add in-place encryption mode
ext4 and f2fs require a bounce page when encrypting pages. However, not
all filesystems will need that (eg. UBIFS). This is handled via a
flag on fscrypt_operations where a fs implementation can select in-place
encryption over using a bounce page (which is the default).
Signed-off-by: David Gstir <david@sigma-star.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fscrypto.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/fscrypto.h b/include/linux/fscrypto.h index ff8b11b26f31..5a65b0e3773f 100644 --- a/include/linux/fscrypto.h +++ b/include/linux/fscrypto.h @@ -154,9 +154,15 @@ struct fscrypt_name { #define fname_len(p) ((p)->disk_name.len) /* + * fscrypt superblock flags + */ +#define FS_CFLG_INPLACE_ENCRYPTION (1U << 1) + +/* * crypto opertions for filesystems */ struct fscrypt_operations { + unsigned int flags; int (*get_context)(struct inode *, void *, size_t); int (*key_prefix)(struct inode *, u8 **); int (*prepare_context)(struct inode *); |