diff options
| author |   Sascha Hauer <s.hauer@pengutronix.de> | 2018-09-07 14:36:34 +0200 |
|---|---|---|
| committer |   Richard Weinberger <richard@nod.at> | 2018-10-23 13:48:39 +0200 |
| commit | 823838a486888cf484e739ab37df14cb04dfddb5 (patch) | |
| tree | f9ea86215e41e177e14e31c8a8281734a2811f15 /fs/ubifs/ubifs.h | |
| parent | ubifs: Create functions to embed a HMAC in a node (diff) | |
| download | wireguard-linux-823838a486888cf484e739ab37df14cb04dfddb5.tar.xz wireguard-linux-823838a486888cf484e739ab37df14cb04dfddb5.zip | |
ubifs: Add hashes to the tree node cache
As part of the UBIFS authentication support every branch in the index
gets a hash covering the referenced node. To make that happen the tree
node cache needs hashes over the nodes. This patch adds a hash argument
to ubifs_tnc_add() and ubifs_tnc_add_nm(). The hashes are calculated
from the callers of these functions which actually prepare the nodes.
With this patch all the leaf nodes of the index tree get hashes, but
currently nothing is done with these hashes, this is left for a later
patch.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 42e904b060f9..a7e423347e6d 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -747,6 +747,7 @@ struct ubifs_jhead { * @lnum: LEB number of the target node (indexing node or data node) * @offs: target node offset within @lnum * @len: target node length + * @hash: the hash of the target node */ struct ubifs_zbranch { union ubifs_key key; @@ -757,6 +758,7 @@ struct ubifs_zbranch { int lnum; int offs; int len; + u8 hash[UBIFS_HASH_ARR_SZ]; }; /** @@ -1818,11 +1820,12 @@ int ubifs_tnc_lookup_dh(struct ubifs_info *c, const union ubifs_key *key, int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key, void *node, int *lnum, int *offs); int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum, - int offs, int len); + int offs, int len, const u8 *hash); int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key, int old_lnum, int old_offs, int lnum, int offs, int len); int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key, - int lnum, int offs, int len, const struct fscrypt_name *nm); + int lnum, int offs, int len, const u8 *hash, + const struct fscrypt_name *nm); int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key); int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key, const struct fscrypt_name *nm); |