*
* Copyright (C) 1997-2003 Erez Zadok
* Copyright (C) 2001-2003 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2008 International Business Machines Corp.
* Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
* Trevor S. Highland <trevor.highland@gmail.com>
* Tyler Hicks <tyhicks@ou.edu>
#include <linux/fs_stack.h>
#include <linux/namei.h>
#include <linux/scatterlist.h>
+#include <linux/hash.h>
+#include <linux/nsproxy.h>
/* Version verification for shared data structures w/ userspace */
#define ECRYPTFS_VERSION_MAJOR 0x00
#define ECRYPTFS_VERSION_MINOR 0x04
-#define ECRYPTFS_SUPPORTED_FILE_VERSION 0x02
+#define ECRYPTFS_SUPPORTED_FILE_VERSION 0x03
/* These flags indicate which features are supported by the kernel
* module; userspace tools such as the mount helper read
* ECRYPTFS_VERSIONING_MASK from a sysfs handle in order to determine
* how to behave. */
-#define ECRYPTFS_VERSIONING_PASSPHRASE 0x00000001
-#define ECRYPTFS_VERSIONING_PUBKEY 0x00000002
+#define ECRYPTFS_VERSIONING_PASSPHRASE 0x00000001
+#define ECRYPTFS_VERSIONING_PUBKEY 0x00000002
#define ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH 0x00000004
-#define ECRYPTFS_VERSIONING_POLICY 0x00000008
+#define ECRYPTFS_VERSIONING_POLICY 0x00000008
+#define ECRYPTFS_VERSIONING_XATTR 0x00000010
+#define ECRYPTFS_VERSIONING_MULTKEY 0x00000020
+#define ECRYPTFS_VERSIONING_DEVMISC 0x00000040
+#define ECRYPTFS_VERSIONING_HMAC 0x00000080
+#define ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION 0x00000100
+#define ECRYPTFS_VERSIONING_GCM 0x00000200
#define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \
- | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH)
-
+ | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \
+ | ECRYPTFS_VERSIONING_PUBKEY \
+ | ECRYPTFS_VERSIONING_XATTR \
+ | ECRYPTFS_VERSIONING_MULTKEY \
+ | ECRYPTFS_VERSIONING_DEVMISC \
+ | ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION)
#define ECRYPTFS_MAX_PASSWORD_LENGTH 64
#define ECRYPTFS_MAX_PASSPHRASE_BYTES ECRYPTFS_MAX_PASSWORD_LENGTH
#define ECRYPTFS_SALT_SIZE 8
#define ECRYPTFS_MAX_KEY_BYTES 64
#define ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES 512
#define ECRYPTFS_DEFAULT_IV_BYTES 16
-#define ECRYPTFS_FILE_VERSION 0x02
-#define ECRYPTFS_DEFAULT_HEADER_EXTENT_SIZE 8192
+#define ECRYPTFS_FILE_VERSION 0x03
#define ECRYPTFS_DEFAULT_EXTENT_SIZE 4096
#define ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE 8192
#define ECRYPTFS_DEFAULT_MSG_CTX_ELEMS 32
#define ECRYPTFS_DEFAULT_SEND_TIMEOUT HZ
#define ECRYPTFS_MAX_MSG_CTX_TTL (HZ*3)
-#define ECRYPTFS_NLMSG_HELO 100
-#define ECRYPTFS_NLMSG_QUIT 101
-#define ECRYPTFS_NLMSG_REQUEST 102
-#define ECRYPTFS_NLMSG_RESPONSE 103
#define ECRYPTFS_MAX_PKI_NAME_BYTES 16
#define ECRYPTFS_DEFAULT_NUM_USERS 4
#define ECRYPTFS_MAX_NUM_USERS 32768
-#define ECRYPTFS_TRANSPORT_NETLINK 0
-#define ECRYPTFS_TRANSPORT_CONNECTOR 1
-#define ECRYPTFS_TRANSPORT_RELAYFS 2
-#define ECRYPTFS_DEFAULT_TRANSPORT ECRYPTFS_TRANSPORT_NETLINK
+#define ECRYPTFS_XATTR_NAME "user.ecryptfs"
#define RFC2440_CIPHER_DES3_EDE 0x02
#define RFC2440_CIPHER_CAST_5 0x03
#define RFC2440_CIPHER_TWOFISH 0x0a
#define RFC2440_CIPHER_CAST_6 0x0b
-#define ECRYPTFS_SET_FLAG(flag_bit_vector, flag) (flag_bit_vector |= (flag))
-#define ECRYPTFS_CLEAR_FLAG(flag_bit_vector, flag) (flag_bit_vector &= ~(flag))
-#define ECRYPTFS_CHECK_FLAG(flag_bit_vector, flag) (flag_bit_vector & (flag))
#define RFC2440_CIPHER_RSA 0x01
/**
struct ecryptfs_auth_tok {
u16 version; /* 8-bit major and 8-bit minor */
u16 token_type;
+#define ECRYPTFS_ENCRYPT_ONLY 0x00000001
u32 flags;
struct ecryptfs_session_key session_key;
u8 reserved[32];
#define ECRYPTFS_MAX_KEYSET_SIZE 1024
#define ECRYPTFS_MAX_CIPHER_NAME_SIZE 32
#define ECRYPTFS_MAX_NUM_ENC_KEYS 64
-#define ECRYPTFS_MAX_NUM_KEYSIGS 2 /* TODO: Make this a linked list */
#define ECRYPTFS_MAX_IV_BYTES 16 /* 128 bits */
#define ECRYPTFS_SALT_BYTES 2
#define MAGIC_ECRYPTFS_MARKER 0x3c81b7f5
#define MAGIC_ECRYPTFS_MARKER_SIZE_BYTES 8 /* 4*2 */
-#define ECRYPTFS_FILE_SIZE_BYTES 8
+#define ECRYPTFS_FILE_SIZE_BYTES (sizeof(u64))
#define ECRYPTFS_DEFAULT_CIPHER "aes"
#define ECRYPTFS_DEFAULT_KEY_BYTES 16
#define ECRYPTFS_DEFAULT_HASH "md5"
+#define ECRYPTFS_TAG_70_DIGEST ECRYPTFS_DEFAULT_HASH
#define ECRYPTFS_TAG_1_PACKET_TYPE 0x01
#define ECRYPTFS_TAG_3_PACKET_TYPE 0x8C
#define ECRYPTFS_TAG_11_PACKET_TYPE 0xED
#define ECRYPTFS_TAG_65_PACKET_TYPE 0x41
#define ECRYPTFS_TAG_66_PACKET_TYPE 0x42
#define ECRYPTFS_TAG_67_PACKET_TYPE 0x43
+#define ECRYPTFS_TAG_70_PACKET_TYPE 0x46 /* FNEK-encrypted filename
+ * as dentry name */
+#define ECRYPTFS_TAG_71_PACKET_TYPE 0x47 /* FNEK-encrypted filename in
+ * metadata */
+#define ECRYPTFS_TAG_72_PACKET_TYPE 0x48 /* FEK-encrypted filename as
+ * dentry name */
+#define ECRYPTFS_TAG_73_PACKET_TYPE 0x49 /* FEK-encrypted filename as
+ * metadata */
+/* Constraint: ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES >=
+ * ECRYPTFS_MAX_IV_BYTES */
+#define ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES 16
+#define ECRYPTFS_NON_NULL 0x42 /* A reasonable substitute for NULL */
#define MD5_DIGEST_SIZE 16
+#define ECRYPTFS_TAG_70_DIGEST_SIZE MD5_DIGEST_SIZE
+#define ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX "ECRYPTFS_FEK_ENCRYPTED."
+#define ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX_SIZE 23
+#define ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX "ECRYPTFS_FNEK_ENCRYPTED."
+#define ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE 24
+#define ECRYPTFS_ENCRYPTED_DENTRY_NAME_LEN (18 + 1 + 4 + 1 + 32)
+
+struct ecryptfs_key_sig {
+ struct list_head crypt_stat_list;
+ char keysig[ECRYPTFS_SIG_SIZE_HEX];
+};
+
+struct ecryptfs_filename {
+ struct list_head crypt_stat_list;
+#define ECRYPTFS_FILENAME_CONTAINS_DECRYPTED 0x00000001
+ u32 flags;
+ u32 seq_no;
+ char *filename;
+ char *encrypted_filename;
+ size_t filename_size;
+ size_t encrypted_filename_size;
+ char fnek_sig[ECRYPTFS_SIG_SIZE_HEX];
+ char dentry_name[ECRYPTFS_ENCRYPTED_DENTRY_NAME_LEN + 1];
+};
/**
* This is the primary struct associated with each encrypted file.
* TODO: cache align/pack?
*/
struct ecryptfs_crypt_stat {
-#define ECRYPTFS_STRUCT_INITIALIZED 0x00000001
-#define ECRYPTFS_POLICY_APPLIED 0x00000002
-#define ECRYPTFS_NEW_FILE 0x00000004
-#define ECRYPTFS_ENCRYPTED 0x00000008
-#define ECRYPTFS_SECURITY_WARNING 0x00000010
-#define ECRYPTFS_ENABLE_HMAC 0x00000020
-#define ECRYPTFS_ENCRYPT_IV_PAGES 0x00000040
-#define ECRYPTFS_KEY_VALID 0x00000080
+#define ECRYPTFS_STRUCT_INITIALIZED 0x00000001
+#define ECRYPTFS_POLICY_APPLIED 0x00000002
+#define ECRYPTFS_NEW_FILE 0x00000004
+#define ECRYPTFS_ENCRYPTED 0x00000008
+#define ECRYPTFS_SECURITY_WARNING 0x00000010
+#define ECRYPTFS_ENABLE_HMAC 0x00000020
+#define ECRYPTFS_ENCRYPT_IV_PAGES 0x00000040
+#define ECRYPTFS_KEY_VALID 0x00000080
+#define ECRYPTFS_METADATA_IN_XATTR 0x00000100
+#define ECRYPTFS_VIEW_AS_ENCRYPTED 0x00000200
+#define ECRYPTFS_KEY_SET 0x00000400
+#define ECRYPTFS_ENCRYPT_FILENAMES 0x00000800
+#define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00001000
+#define ECRYPTFS_ENCFN_USE_FEK 0x00002000
+#define ECRYPTFS_UNLINK_SIGS 0x00004000
u32 flags;
unsigned int file_version;
size_t iv_bytes;
- size_t num_keysigs;
- size_t header_extent_size;
- size_t num_header_extents_at_front;
+ size_t num_header_bytes_at_front;
size_t extent_size; /* Data extent size; default is 4096 */
size_t key_size;
size_t extent_shift;
unsigned char cipher[ECRYPTFS_MAX_CIPHER_NAME_SIZE];
unsigned char key[ECRYPTFS_MAX_KEY_BYTES];
unsigned char root_iv[ECRYPTFS_MAX_IV_BYTES];
- unsigned char keysigs[ECRYPTFS_MAX_NUM_KEYSIGS][ECRYPTFS_SIG_SIZE_HEX];
+ struct list_head keysig_list;
+ struct mutex keysig_list_mutex;
struct mutex cs_tfm_mutex;
struct mutex cs_hash_tfm_mutex;
struct mutex cs_mutex;
struct ecryptfs_inode_info {
struct inode vfs_inode;
struct inode *wii_inode;
+ struct file *lower_file;
+ struct mutex lower_file_mutex;
struct ecryptfs_crypt_stat crypt_stat;
};
};
/**
+ * ecryptfs_global_auth_tok - A key used to encrypt all new files under the mountpoint
+ * @flags: Status flags
+ * @mount_crypt_stat_list: These auth_toks hang off the mount-wide
+ * cryptographic context. Every time a new
+ * inode comes into existence, eCryptfs copies
+ * the auth_toks on that list to the set of
+ * auth_toks on the inode's crypt_stat
+ * @global_auth_tok_key: The key from the user's keyring for the sig
+ * @global_auth_tok: The key contents
+ * @sig: The key identifier
+ *
+ * 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
+#define ECRYPTFS_AUTH_TOK_FNEK 0x00000002
+ 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];
+};
+
+/**
+ * ecryptfs_key_tfm - Persistent key tfm
+ * @key_tfm: crypto API handle to the key
+ * @key_size: Key size in bytes
+ * @key_tfm_mutex: Mutex to ensure only one operation in eCryptfs is
+ * using the persistent TFM at any point in time
+ * @key_tfm_list: Handle to hang this off the module-wide TFM list
+ * @cipher_name: String name for the cipher for this TFM
+ *
+ * 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;
+ unsigned char cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE + 1];
+};
+
+extern struct mutex key_tfm_list_mutex;
+
+/**
* This struct is to enable a mount-wide passphrase/salt combo. This
* is more or less a stopgap to provide similar functionality to other
* crypto filesystems like EncFS or CFS until full policy support is
struct ecryptfs_mount_crypt_stat {
/* Pointers to memory we do not own, do not free these */
#define ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED 0x00000001
+#define ECRYPTFS_XATTR_METADATA_ENABLED 0x00000002
+#define ECRYPTFS_ENCRYPTED_VIEW_ENABLED 0x00000004
+#define ECRYPTFS_MOUNT_CRYPT_STAT_INITIALIZED 0x00000008
+#define ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES 0x00000010
+#define ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK 0x00000020
+#define ECRYPTFS_GLOBAL_ENCFN_USE_FEK 0x00000040
u32 flags;
- struct ecryptfs_auth_tok *global_auth_tok;
- struct key *global_auth_tok_key;
+ struct list_head global_auth_tok_list;
+ struct mutex global_auth_tok_list_mutex;
+ size_t num_global_auth_toks;
size_t global_default_cipher_key_size;
- struct crypto_blkcipher *global_key_tfm;
- struct mutex global_key_tfm_mutex;
+ size_t global_default_fn_cipher_key_bytes;
unsigned char global_default_cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE
+ 1];
- unsigned char global_auth_tok_sig[ECRYPTFS_SIG_SIZE_HEX + 1];
+ unsigned char global_default_fn_cipher_name[
+ ECRYPTFS_MAX_CIPHER_NAME_SIZE + 1];
+ char global_default_fnek_sig[ECRYPTFS_SIG_SIZE_HEX + 1];
};
/* superblock private data. */
};
struct ecryptfs_message {
+ /* Can never be greater than ecryptfs_message_buf_len */
+ /* Used to find the parent msg_ctx */
+ /* Inherits from msg_ctx->index */
u32 index;
u32 data_len;
u8 data[];
};
struct ecryptfs_msg_ctx {
-#define ECRYPTFS_MSG_CTX_STATE_FREE 0x0001
-#define ECRYPTFS_MSG_CTX_STATE_PENDING 0x0002
-#define ECRYPTFS_MSG_CTX_STATE_DONE 0x0003
- u32 state;
- unsigned int index;
- unsigned int counter;
+#define ECRYPTFS_MSG_CTX_STATE_FREE 0x01
+#define ECRYPTFS_MSG_CTX_STATE_PENDING 0x02
+#define ECRYPTFS_MSG_CTX_STATE_DONE 0x03
+#define ECRYPTFS_MSG_CTX_STATE_NO_REPLY 0x04
+ u8 state;
+#define ECRYPTFS_MSG_HELO 100
+#define ECRYPTFS_MSG_QUIT 101
+#define ECRYPTFS_MSG_REQUEST 102
+#define ECRYPTFS_MSG_RESPONSE 103
+ u8 type;
+ u32 index;
+ /* Counter converts to a sequence number. Each message sent
+ * out for which we expect a response has an associated
+ * sequence number. The response must have the same sequence
+ * number as the counter for the msg_stc for the message to be
+ * valid. */
+ u32 counter;
+ size_t msg_size;
struct ecryptfs_message *msg;
struct task_struct *task;
struct list_head node;
+ struct list_head daemon_out_list;
struct mutex mux;
};
-extern struct list_head ecryptfs_msg_ctx_free_list;
-extern struct list_head ecryptfs_msg_ctx_alloc_list;
-extern struct mutex ecryptfs_msg_ctx_lists_mux;
+struct ecryptfs_daemon;
-#define ecryptfs_uid_hash(uid) \
- hash_long((unsigned long)uid, ecryptfs_hash_buckets)
-extern struct hlist_head *ecryptfs_daemon_id_hash;
-extern struct mutex ecryptfs_daemon_id_hash_mux;
-extern int ecryptfs_hash_buckets;
-
-extern unsigned int ecryptfs_msg_counter;
-extern struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
-extern unsigned int ecryptfs_transport;
-
-struct ecryptfs_daemon_id {
- pid_t pid;
- uid_t uid;
- struct hlist_node id_chain;
+struct ecryptfs_daemon {
+#define ECRYPTFS_DAEMON_IN_READ 0x00000001
+#define ECRYPTFS_DAEMON_IN_POLL 0x00000002
+#define ECRYPTFS_DAEMON_ZOMBIE 0x00000004
+#define ECRYPTFS_DAEMON_MISCDEV_OPEN 0x00000008
+ u32 flags;
+ u32 num_queued_msg_ctx;
+ struct pid *pid;
+ uid_t euid;
+ struct user_namespace *user_ns;
+ struct task_struct *task;
+ struct mutex mux;
+ struct list_head msg_ctx_out_queue;
+ wait_queue_head_t wait;
+ struct hlist_node euid_chain;
};
+extern struct mutex ecryptfs_daemon_hash_mux;
+
static inline struct ecryptfs_file_info *
ecryptfs_file_to_private(struct file *file)
{
}
#define ecryptfs_printk(type, fmt, arg...) \
- __ecryptfs_printk(type "%s: " fmt, __FUNCTION__, ## arg);
+ __ecryptfs_printk(type "%s: " fmt, __func__, ## arg);
void __ecryptfs_printk(const char *fmt, ...);
extern const struct file_operations ecryptfs_main_fops;
extern const struct file_operations ecryptfs_dir_fops;
-extern struct inode_operations ecryptfs_main_iops;
-extern struct inode_operations ecryptfs_dir_iops;
-extern struct inode_operations ecryptfs_symlink_iops;
-extern struct super_operations ecryptfs_sops;
-extern struct dentry_operations ecryptfs_dops;
-extern struct address_space_operations ecryptfs_aops;
+extern const struct inode_operations ecryptfs_main_iops;
+extern const struct inode_operations ecryptfs_dir_iops;
+extern const struct inode_operations ecryptfs_symlink_iops;
+extern const struct super_operations ecryptfs_sops;
+extern const struct dentry_operations ecryptfs_dops;
+extern const struct address_space_operations ecryptfs_aops;
extern int ecryptfs_verbosity;
extern unsigned int ecryptfs_message_buf_len;
extern signed long ecryptfs_message_wait_timeout;
extern struct kmem_cache *ecryptfs_dentry_info_cache;
extern struct kmem_cache *ecryptfs_inode_info_cache;
extern struct kmem_cache *ecryptfs_sb_info_cache;
-extern struct kmem_cache *ecryptfs_header_cache_0;
extern struct kmem_cache *ecryptfs_header_cache_1;
extern struct kmem_cache *ecryptfs_header_cache_2;
-extern struct kmem_cache *ecryptfs_lower_page_cache;
+extern struct kmem_cache *ecryptfs_xattr_cache;
+extern struct kmem_cache *ecryptfs_key_record_cache;
+extern struct kmem_cache *ecryptfs_key_sig_cache;
+extern struct kmem_cache *ecryptfs_global_auth_tok_cache;
+extern struct kmem_cache *ecryptfs_key_tfm_cache;
+extern struct kmem_cache *ecryptfs_open_req_cache;
+
+struct ecryptfs_open_req {
+#define ECRYPTFS_REQ_PROCESSED 0x00000001
+#define ECRYPTFS_REQ_DROPPED 0x00000002
+#define ECRYPTFS_REQ_ZOMBIE 0x00000004
+ u32 flags;
+ struct file **lower_file;
+ struct dentry *lower_dentry;
+ struct vfsmount *lower_mnt;
+ wait_queue_head_t wait;
+ struct mutex mux;
+ struct list_head kthread_ctl_list;
+};
+#define ECRYPTFS_INTERPOSE_FLAG_D_ADD 0x00000001
int ecryptfs_interpose(struct dentry *hidden_dentry,
struct dentry *this_dentry, struct super_block *sb,
- int flag);
+ u32 flags);
+int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry,
+ struct dentry *lower_dentry,
+ struct inode *ecryptfs_dir_inode,
+ struct nameidata *ecryptfs_nd);
+int ecryptfs_decode_and_decrypt_filename(char **decrypted_name,
+ size_t *decrypted_name_size,
+ struct dentry *ecryptfs_dentry,
+ const char *name, size_t name_size);
int ecryptfs_fill_zeros(struct file *file, loff_t new_length);
-int ecryptfs_decode_filename(struct ecryptfs_crypt_stat *crypt_stat,
- const char *name, int length,
- char **decrypted_name);
-int ecryptfs_encode_filename(struct ecryptfs_crypt_stat *crypt_stat,
- const char *name, int length,
- char **encoded_name);
+int ecryptfs_encrypt_and_encode_filename(
+ char **encoded_name,
+ size_t *encoded_name_size,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ const char *name, size_t name_size);
struct dentry *ecryptfs_lower_dentry(struct dentry *this_dentry);
void ecryptfs_dump_hex(char *data, int bytes);
int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg,
int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat);
void ecryptfs_rotate_iv(unsigned char *iv);
void ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
-void ecryptfs_destruct_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
-void ecryptfs_destruct_mount_crypt_stat(
+void ecryptfs_destroy_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
+void ecryptfs_destroy_mount_crypt_stat(
struct ecryptfs_mount_crypt_stat *mount_crypt_stat);
int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat);
-int ecryptfs_crypto_api_algify_cipher_name(char **algified_name,
- char *cipher_name,
- char *chaining_modifier);
-int ecryptfs_write_inode_size_to_header(struct file *lower_file,
- struct inode *lower_inode,
- struct inode *inode);
-int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode,
- struct file *lower_file,
- unsigned long lower_page_index, int byte_offset,
- int region_bytes);
-int
-ecryptfs_commit_lower_page(struct page *lower_page, struct inode *lower_inode,
- struct file *lower_file, int byte_offset,
- int region_size);
-int ecryptfs_copy_page_to_lower(struct page *page, struct inode *lower_inode,
- struct file *lower_file);
-int ecryptfs_do_readpage(struct file *file, struct page *page,
- pgoff_t lower_page_index);
-int ecryptfs_grab_and_map_lower_page(struct page **lower_page,
- char **lower_virt,
- struct inode *lower_inode,
- unsigned long lower_page_index);
-int ecryptfs_writepage_and_release_lower_page(struct page *lower_page,
- struct inode *lower_inode,
- struct writeback_control *wbc);
-int ecryptfs_encrypt_page(struct ecryptfs_page_crypt_context *ctx);
-int ecryptfs_decrypt_page(struct file *file, struct page *page);
-int ecryptfs_write_headers(struct dentry *ecryptfs_dentry,
- struct file *lower_file);
-int ecryptfs_write_headers_virt(char *page_virt,
- struct ecryptfs_crypt_stat *crypt_stat,
- struct dentry *ecryptfs_dentry);
-int ecryptfs_read_headers(struct dentry *ecryptfs_dentry,
- struct file *lower_file);
+int ecryptfs_write_inode_size_to_metadata(struct inode *ecryptfs_inode);
+int ecryptfs_encrypt_page(struct page *page);
+int ecryptfs_decrypt_page(struct page *page);
+int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry);
+int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry);
int ecryptfs_new_file_context(struct dentry *ecryptfs_dentry);
-int contains_ecryptfs_marker(char *data);
-int ecryptfs_read_header_region(char *data, struct dentry *dentry,
- struct vfsmount *mnt);
-u16 ecryptfs_code_for_cipher_string(struct ecryptfs_crypt_stat *crypt_stat);
-int ecryptfs_cipher_code_to_string(char *str, u16 cipher_code);
+int ecryptfs_read_and_validate_header_region(char *data,
+ struct inode *ecryptfs_inode);
+int ecryptfs_read_and_validate_xattr_region(char *page_virt,
+ struct dentry *ecryptfs_dentry);
+u8 ecryptfs_code_for_cipher_string(char *cipher_name, size_t key_bytes);
+int ecryptfs_cipher_code_to_string(char *str, u8 cipher_code);
void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat);
int ecryptfs_generate_key_packet_set(char *dest_base,
struct ecryptfs_crypt_stat *crypt_stat,
struct dentry *ecryptfs_dentry,
size_t *len, size_t max);
-int process_request_key_err(long err_code);
int
ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
unsigned char *src, struct dentry *ecryptfs_dentry);
int ecryptfs_truncate(struct dentry *dentry, loff_t new_length);
-int
-ecryptfs_process_cipher(struct crypto_blkcipher **key_tfm, char *cipher_name,
- size_t *key_size);
int ecryptfs_inode_test(struct inode *inode, void *candidate_lower_inode);
int ecryptfs_inode_set(struct inode *inode, void *lower_inode);
void ecryptfs_init_inode(struct inode *inode, struct inode *lower_inode);
-int ecryptfs_open_lower_file(struct file **lower_file,
- struct dentry *lower_dentry,
- struct vfsmount *lower_mnt, int flags);
-int ecryptfs_close_lower_file(struct file *lower_file);
-
-int ecryptfs_process_helo(unsigned int transport, uid_t uid, pid_t pid);
-int ecryptfs_process_quit(uid_t uid, pid_t pid);
-int ecryptfs_process_response(struct ecryptfs_message *msg, pid_t pid, u32 seq);
-int ecryptfs_send_message(unsigned int transport, char *data, int data_len,
+ssize_t
+ecryptfs_getxattr_lower(struct dentry *lower_dentry, const char *name,
+ void *value, size_t size);
+int
+ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
+ size_t size, int flags);
+int ecryptfs_read_xattr_region(char *page_virt, struct inode *ecryptfs_inode);
+int ecryptfs_process_helo(uid_t euid, struct user_namespace *user_ns,
+ struct pid *pid);
+int ecryptfs_process_quit(uid_t euid, struct user_namespace *user_ns,
+ struct pid *pid);
+int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t euid,
+ struct user_namespace *user_ns, struct pid *pid,
+ u32 seq);
+int ecryptfs_send_message(char *data, int data_len,
struct ecryptfs_msg_ctx **msg_ctx);
int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx,
struct ecryptfs_message **emsg);
-int ecryptfs_init_messaging(unsigned int transport);
-void ecryptfs_release_messaging(unsigned int transport);
-
-int ecryptfs_send_netlink(char *data, int data_len,
- struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
- u16 msg_flags, pid_t daemon_pid);
-int ecryptfs_init_netlink(void);
-void ecryptfs_release_netlink(void);
-
-int ecryptfs_send_connector(char *data, int data_len,
- struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
- u16 msg_flags, pid_t daemon_pid);
-int ecryptfs_init_connector(void);
-void ecryptfs_release_connector(void);
-
+int ecryptfs_init_messaging(void);
+void ecryptfs_release_messaging(void);
+
+void
+ecryptfs_write_header_metadata(char *virt,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ size_t *written);
+int ecryptfs_add_keysig(struct ecryptfs_crypt_stat *crypt_stat, char *sig);
+int
+ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *sig, u32 global_auth_tok_flags);
+int ecryptfs_get_global_auth_tok_for_sig(
+ struct ecryptfs_global_auth_tok **global_auth_tok,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig);
+int
+ecryptfs_add_new_key_tfm(struct ecryptfs_key_tfm **key_tfm, char *cipher_name,
+ size_t key_size);
+int ecryptfs_init_crypto(void);
+int ecryptfs_destroy_crypto(void);
+int ecryptfs_tfm_exists(char *cipher_name, struct ecryptfs_key_tfm **key_tfm);
+int ecryptfs_get_tfm_and_mutex_for_cipher_name(struct crypto_blkcipher **tfm,
+ struct mutex **tfm_mutex,
+ char *cipher_name);
+int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
+ struct ecryptfs_auth_tok **auth_tok,
+ char *sig);
+int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
+ loff_t offset, size_t size);
+int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode,
+ struct page *page_for_lower,
+ size_t offset_in_page, size_t size);
+int ecryptfs_write(struct file *ecryptfs_file, char *data, loff_t offset,
+ size_t size);
+int ecryptfs_read_lower(char *data, loff_t offset, size_t size,
+ struct inode *ecryptfs_inode);
+int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs,
+ pgoff_t page_index,
+ size_t offset_in_page, size_t size,
+ struct inode *ecryptfs_inode);
+struct page *ecryptfs_get_locked_page(struct file *file, loff_t index);
+int ecryptfs_exorcise_daemon(struct ecryptfs_daemon *daemon);
+int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon, uid_t euid,
+ struct user_namespace *user_ns);
+int ecryptfs_parse_packet_length(unsigned char *data, size_t *size,
+ size_t *length_size);
+int ecryptfs_write_packet_length(char *dest, size_t size,
+ size_t *packet_size_length);
+int ecryptfs_init_ecryptfs_miscdev(void);
+void ecryptfs_destroy_ecryptfs_miscdev(void);
+int ecryptfs_send_miscdev(char *data, size_t data_size,
+ struct ecryptfs_msg_ctx *msg_ctx, u8 msg_type,
+ u16 msg_flags, struct ecryptfs_daemon *daemon);
+void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx);
+int
+ecryptfs_spawn_daemon(struct ecryptfs_daemon **daemon, uid_t euid,
+ struct user_namespace *user_ns, struct pid *pid);
+int ecryptfs_init_kthread(void);
+void ecryptfs_destroy_kthread(void);
+int ecryptfs_privileged_open(struct file **lower_file,
+ struct dentry *lower_dentry,
+ struct vfsmount *lower_mnt,
+ const struct cred *cred);
+int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry);
+int
+ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
+ size_t *packet_size,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *filename, size_t filename_size);
+int
+ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
+ size_t *packet_size,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *data, size_t max_packet_size);
+int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
+ loff_t offset);
#endif /* #ifndef ECRYPTFS_KERNEL_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff