diff options
| -rw-r--r-- | fs/ecryptfs/ecryptfs_kernel.h | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index 69f6a2289cdf..fd6dd585514c 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -273,20 +273,36 @@ struct ecryptfs_dentry_info { struct ecryptfs_crypt_stat *crypt_stat; }; +/** + * ecryptfs_global_auth_tok structs refer to authentication token keys + * in the user keyring that apply to newly created files. A list of + * these objects hangs off of the mount_crypt_stat struct for any + * given eCryptfs mount. This struct maintains a reference to both the + * key contents and the key itself so that the key can be put on + * unmount. + */ struct ecryptfs_global_auth_tok { #define ECRYPTFS_AUTH_TOK_INVALID 0x00000001 u32 flags; - struct list_head mount_crypt_stat_list; - struct key *global_auth_tok_key; - struct ecryptfs_auth_tok *global_auth_tok; - unsigned char sig[ECRYPTFS_SIG_SIZE_HEX + 1]; + struct list_head mount_crypt_stat_list; /* Default auth_tok list for + * the mount_crypt_stat */ + struct key *global_auth_tok_key; /* The key from the user's keyring for + * the sig */ + struct ecryptfs_auth_tok *global_auth_tok; /* The key contents */ + unsigned char sig[ECRYPTFS_SIG_SIZE_HEX + 1]; /* The key identifier */ }; +/** + * Typically, eCryptfs will use the same ciphers repeatedly throughout + * the course of its operations. In order to avoid unnecessarily + * destroying and initializing the same cipher repeatedly, eCryptfs + * keeps a list of crypto API contexts around to use when needed. + */ struct ecryptfs_key_tfm { struct crypto_blkcipher *key_tfm; size_t key_size; struct mutex key_tfm_mutex; - struct list_head key_tfm_list; + struct list_head key_tfm_list; /* The module's tfm list */ unsigned char cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE + 1]; }; |