The function ecryptfs_keyring_auth_tok_for_sig() has been modified in order to search keys of both 'user' and 'encrypted' types. Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxx> Acked-by: Gianluca Ramunno <ramunno@xxxxxxxxx> --- fs/ecryptfs/ecryptfs_kernel.h | 41 +++++++++++++++++++++++++++++++++++++++-- fs/ecryptfs/keystore.c | 11 +++++++---- 2 files changed, 46 insertions(+), 6 deletions(-) diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index 2e2242f..2b50397 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -29,6 +29,7 @@ #define ECRYPTFS_KERNEL_H #include <keys/user-type.h> +#include <keys/encrypted-type.h> #include <linux/fs.h> #include <linux/fs_stack.h> #include <linux/namei.h> @@ -78,11 +79,47 @@ struct ecryptfs_page_crypt_context { } param; }; +#if defined(CONFIG_ENCRYPTED_KEYS) || defined(CONFIG_ENCRYPTED_KEYS_MODULE) +static inline struct ecryptfs_auth_tok * +ecryptfs_get_encrypted_key_payload_data(struct key *key) +{ + if (key->type == &key_type_encrypted) + return (struct ecryptfs_auth_tok *) + (&((struct encrypted_key_payload *)key->payload.data)->payload_data); + else + return NULL; +} + +static inline struct key *ecryptfs_get_encrypted_key(char *sig) +{ + return request_key(&key_type_encrypted, sig, NULL); +} + +#else +static inline struct ecryptfs_auth_tok * +ecryptfs_get_encrypted_key_payload_data(struct key *key) +{ + return NULL; +} + +static inline struct key *ecryptfs_get_encrypted_key(char *sig) +{ + return ERR_PTR(-ENOKEY); +} + +#endif /* CONFIG_ENCRYPTED_KEYS */ + static inline struct ecryptfs_auth_tok * ecryptfs_get_key_payload_data(struct key *key) { - return (struct ecryptfs_auth_tok *) - (((struct user_key_payload*)key->payload.data)->data); + struct ecryptfs_auth_tok *auth_tok; + + auth_tok = ecryptfs_get_encrypted_key_payload_data(key); + if (!auth_tok) + return (struct ecryptfs_auth_tok *) + (((struct user_key_payload *)key->payload.data)->data); + else + return auth_tok; } #define ECRYPTFS_MAX_KEYSET_SIZE 1024 diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index c1436cf..17194b8 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -1560,10 +1560,13 @@ int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key, (*auth_tok_key) = request_key(&key_type_user, sig, NULL); if (!(*auth_tok_key) || IS_ERR(*auth_tok_key)) { - printk(KERN_ERR "Could not find key with description: [%s]\n", - sig); - rc = process_request_key_err(PTR_ERR(*auth_tok_key)); - goto out; + (*auth_tok_key) = ecryptfs_get_encrypted_key(sig); + if (!(*auth_tok_key) || IS_ERR(*auth_tok_key)) { + printk(KERN_ERR "Could not find key with description: [%s]\n", + sig); + rc = process_request_key_err(PTR_ERR(*auth_tok_key)); + goto out; + } } (*auth_tok) = ecryptfs_get_key_payload_data(*auth_tok_key); if (ecryptfs_verify_version((*auth_tok)->version)) { -- 1.7.3.4
Attachment:
smime.p7s
Description: S/MIME cryptographic signature