2
* eCryptfs: Linux filesystem encryption layer
5
* Copyright (C) 1997-2003 Erez Zadok
6
* Copyright (C) 2001-2003 Stony Brook University
7
* Copyright (C) 2004-2007 International Business Machines Corp.
8
* Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
9
* Trevor S. Highland <trevor.highland@gmail.com>
10
* Tyler Hicks <tyhicks@ou.edu>
12
* This program is free software; you can redistribute it and/or
13
* modify it under the terms of the GNU General Public License as
14
* published by the Free Software Foundation; either version 2 of the
15
* License, or (at your option) any later version.
17
* This program is distributed in the hope that it will be useful, but
18
* WITHOUT ANY WARRANTY; without even the implied warranty of
19
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20
* General Public License for more details.
22
* You should have received a copy of the GNU General Public License
23
* along with this program; if not, write to the Free Software
24
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
28
#ifndef ECRYPTFS_KERNEL_H
29
#define ECRYPTFS_KERNEL_H
31
#include <keys/user-type.h>
33
#include <linux/fs_stack.h>
34
#include <linux/namei.h>
35
#include <linux/scatterlist.h>
36
#include <linux/hash.h>
38
/* Version verification for shared data structures w/ userspace */
39
#define ECRYPTFS_VERSION_MAJOR 0x00
40
#define ECRYPTFS_VERSION_MINOR 0x04
41
#define ECRYPTFS_SUPPORTED_FILE_VERSION 0x03
42
/* These flags indicate which features are supported by the kernel
43
* module; userspace tools such as the mount helper read
44
* ECRYPTFS_VERSIONING_MASK from a sysfs handle in order to determine
46
#define ECRYPTFS_VERSIONING_PASSPHRASE 0x00000001
47
#define ECRYPTFS_VERSIONING_PUBKEY 0x00000002
48
#define ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH 0x00000004
49
#define ECRYPTFS_VERSIONING_POLICY 0x00000008
50
#define ECRYPTFS_VERSIONING_XATTR 0x00000010
51
#define ECRYPTFS_VERSIONING_MULTKEY 0x00000020
52
#define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \
53
| ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \
54
| ECRYPTFS_VERSIONING_PUBKEY \
55
| ECRYPTFS_VERSIONING_XATTR \
56
| ECRYPTFS_VERSIONING_MULTKEY)
57
#define ECRYPTFS_MAX_PASSWORD_LENGTH 64
58
#define ECRYPTFS_MAX_PASSPHRASE_BYTES ECRYPTFS_MAX_PASSWORD_LENGTH
59
#define ECRYPTFS_SALT_SIZE 8
60
#define ECRYPTFS_SALT_SIZE_HEX (ECRYPTFS_SALT_SIZE*2)
61
/* The original signature size is only for what is stored on disk; all
62
* in-memory representations are expanded hex, so it better adapted to
63
* be passed around or referenced on the command line */
64
#define ECRYPTFS_SIG_SIZE 8
65
#define ECRYPTFS_SIG_SIZE_HEX (ECRYPTFS_SIG_SIZE*2)
66
#define ECRYPTFS_PASSWORD_SIG_SIZE ECRYPTFS_SIG_SIZE_HEX
67
#define ECRYPTFS_MAX_KEY_BYTES 64
68
#define ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES 512
69
#define ECRYPTFS_DEFAULT_IV_BYTES 16
70
#define ECRYPTFS_FILE_VERSION 0x03
71
#define ECRYPTFS_DEFAULT_EXTENT_SIZE 4096
72
#define ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE 8192
73
#define ECRYPTFS_DEFAULT_MSG_CTX_ELEMS 32
74
#define ECRYPTFS_DEFAULT_SEND_TIMEOUT HZ
75
#define ECRYPTFS_MAX_MSG_CTX_TTL (HZ*3)
76
#define ECRYPTFS_NLMSG_HELO 100
77
#define ECRYPTFS_NLMSG_QUIT 101
78
#define ECRYPTFS_NLMSG_REQUEST 102
79
#define ECRYPTFS_NLMSG_RESPONSE 103
80
#define ECRYPTFS_MAX_PKI_NAME_BYTES 16
81
#define ECRYPTFS_DEFAULT_NUM_USERS 4
82
#define ECRYPTFS_MAX_NUM_USERS 32768
83
#define ECRYPTFS_TRANSPORT_NETLINK 0
84
#define ECRYPTFS_TRANSPORT_CONNECTOR 1
85
#define ECRYPTFS_TRANSPORT_RELAYFS 2
86
#define ECRYPTFS_DEFAULT_TRANSPORT ECRYPTFS_TRANSPORT_NETLINK
87
#define ECRYPTFS_XATTR_NAME "user.ecryptfs"
89
#define RFC2440_CIPHER_DES3_EDE 0x02
90
#define RFC2440_CIPHER_CAST_5 0x03
91
#define RFC2440_CIPHER_BLOWFISH 0x04
92
#define RFC2440_CIPHER_AES_128 0x07
93
#define RFC2440_CIPHER_AES_192 0x08
94
#define RFC2440_CIPHER_AES_256 0x09
95
#define RFC2440_CIPHER_TWOFISH 0x0a
96
#define RFC2440_CIPHER_CAST_6 0x0b
98
#define RFC2440_CIPHER_RSA 0x01
101
* For convenience, we may need to pass around the encrypted session
102
* key between kernel and userspace because the authentication token
103
* may not be extractable. For example, the TPM may not release the
104
* private key, instead requiring the encrypted data and returning the
107
struct ecryptfs_session_key {
108
#define ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT 0x00000001
109
#define ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT 0x00000002
110
#define ECRYPTFS_CONTAINS_DECRYPTED_KEY 0x00000004
111
#define ECRYPTFS_CONTAINS_ENCRYPTED_KEY 0x00000008
113
u32 encrypted_key_size;
114
u32 decrypted_key_size;
115
u8 encrypted_key[ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES];
116
u8 decrypted_key[ECRYPTFS_MAX_KEY_BYTES];
119
struct ecryptfs_password {
123
u32 session_key_encryption_key_bytes;
124
#define ECRYPTFS_PERSISTENT_PASSWORD 0x01
125
#define ECRYPTFS_SESSION_KEY_ENCRYPTION_KEY_SET 0x02
127
/* Iterated-hash concatenation of salt and passphrase */
128
u8 session_key_encryption_key[ECRYPTFS_MAX_KEY_BYTES];
129
u8 signature[ECRYPTFS_PASSWORD_SIG_SIZE + 1];
130
/* Always in expanded hex */
131
u8 salt[ECRYPTFS_SALT_SIZE];
134
enum ecryptfs_token_types {ECRYPTFS_PASSWORD, ECRYPTFS_PRIVATE_KEY};
136
struct ecryptfs_private_key {
139
u8 signature[ECRYPTFS_PASSWORD_SIG_SIZE + 1];
140
char pki_type[ECRYPTFS_MAX_PKI_NAME_BYTES + 1];
144
/* May be a password or a private key */
145
struct ecryptfs_auth_tok {
146
u16 version; /* 8-bit major and 8-bit minor */
148
#define ECRYPTFS_ENCRYPT_ONLY 0x00000001
150
struct ecryptfs_session_key session_key;
153
struct ecryptfs_password password;
154
struct ecryptfs_private_key private_key;
156
} __attribute__ ((packed));
158
void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok);
159
extern void ecryptfs_to_hex(char *dst, char *src, size_t src_size);
160
extern void ecryptfs_from_hex(char *dst, char *src, int dst_size);
162
struct ecryptfs_key_record {
165
unsigned char sig[ECRYPTFS_SIG_SIZE];
166
unsigned char enc_key[ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES];
169
struct ecryptfs_auth_tok_list {
170
struct ecryptfs_auth_tok *auth_tok;
171
struct list_head list;
174
struct ecryptfs_crypt_stat;
175
struct ecryptfs_mount_crypt_stat;
177
struct ecryptfs_page_crypt_context {
179
#define ECRYPTFS_PREPARE_COMMIT_MODE 0
180
#define ECRYPTFS_WRITEPAGE_MODE 1
183
struct file *lower_file;
184
struct writeback_control *wbc;
188
static inline struct ecryptfs_auth_tok *
189
ecryptfs_get_key_payload_data(struct key *key)
191
return (struct ecryptfs_auth_tok *)
192
(((struct user_key_payload*)key->payload.data)->data);
195
#define ECRYPTFS_SUPER_MAGIC 0xf15f
196
#define ECRYPTFS_MAX_KEYSET_SIZE 1024
197
#define ECRYPTFS_MAX_CIPHER_NAME_SIZE 32
198
#define ECRYPTFS_MAX_NUM_ENC_KEYS 64
199
#define ECRYPTFS_MAX_IV_BYTES 16 /* 128 bits */
200
#define ECRYPTFS_SALT_BYTES 2
201
#define MAGIC_ECRYPTFS_MARKER 0x3c81b7f5
202
#define MAGIC_ECRYPTFS_MARKER_SIZE_BYTES 8 /* 4*2 */
203
#define ECRYPTFS_FILE_SIZE_BYTES (sizeof(u64))
204
#define ECRYPTFS_DEFAULT_CIPHER "aes"
205
#define ECRYPTFS_DEFAULT_KEY_BYTES 16
206
#define ECRYPTFS_DEFAULT_HASH "md5"
207
#define ECRYPTFS_TAG_1_PACKET_TYPE 0x01
208
#define ECRYPTFS_TAG_3_PACKET_TYPE 0x8C
209
#define ECRYPTFS_TAG_11_PACKET_TYPE 0xED
210
#define ECRYPTFS_TAG_64_PACKET_TYPE 0x40
211
#define ECRYPTFS_TAG_65_PACKET_TYPE 0x41
212
#define ECRYPTFS_TAG_66_PACKET_TYPE 0x42
213
#define ECRYPTFS_TAG_67_PACKET_TYPE 0x43
214
#define MD5_DIGEST_SIZE 16
216
struct ecryptfs_key_sig {
217
struct list_head crypt_stat_list;
218
char keysig[ECRYPTFS_SIG_SIZE_HEX];
222
* This is the primary struct associated with each encrypted file.
224
* TODO: cache align/pack?
226
struct ecryptfs_crypt_stat {
227
#define ECRYPTFS_STRUCT_INITIALIZED 0x00000001
228
#define ECRYPTFS_POLICY_APPLIED 0x00000002
229
#define ECRYPTFS_NEW_FILE 0x00000004
230
#define ECRYPTFS_ENCRYPTED 0x00000008
231
#define ECRYPTFS_SECURITY_WARNING 0x00000010
232
#define ECRYPTFS_ENABLE_HMAC 0x00000020
233
#define ECRYPTFS_ENCRYPT_IV_PAGES 0x00000040
234
#define ECRYPTFS_KEY_VALID 0x00000080
235
#define ECRYPTFS_METADATA_IN_XATTR 0x00000100
236
#define ECRYPTFS_VIEW_AS_ENCRYPTED 0x00000200
237
#define ECRYPTFS_KEY_SET 0x00000400
239
unsigned int file_version;
241
size_t num_header_bytes_at_front;
242
size_t extent_size; /* Data extent size; default is 4096 */
245
unsigned int extent_mask;
246
struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
247
struct crypto_blkcipher *tfm;
248
struct crypto_hash *hash_tfm; /* Crypto context for generating
249
* the initialization vectors */
250
unsigned char cipher[ECRYPTFS_MAX_CIPHER_NAME_SIZE];
251
unsigned char key[ECRYPTFS_MAX_KEY_BYTES];
252
unsigned char root_iv[ECRYPTFS_MAX_IV_BYTES];
253
struct list_head keysig_list;
254
struct mutex keysig_list_mutex;
255
struct mutex cs_tfm_mutex;
256
struct mutex cs_hash_tfm_mutex;
257
struct mutex cs_mutex;
260
/* inode private data. */
261
struct ecryptfs_inode_info {
262
struct inode vfs_inode;
263
struct inode *wii_inode;
264
struct file *lower_file;
265
struct mutex lower_file_mutex;
266
struct ecryptfs_crypt_stat crypt_stat;
269
/* dentry private data. Each dentry must keep track of a lower
271
struct ecryptfs_dentry_info {
272
struct path lower_path;
273
struct ecryptfs_crypt_stat *crypt_stat;
277
* ecryptfs_global_auth_tok - A key used to encrypt all new files under the mountpoint
278
* @flags: Status flags
279
* @mount_crypt_stat_list: These auth_toks hang off the mount-wide
280
* cryptographic context. Every time a new
281
* inode comes into existence, eCryptfs copies
282
* the auth_toks on that list to the set of
283
* auth_toks on the inode's crypt_stat
284
* @global_auth_tok_key: The key from the user's keyring for the sig
285
* @global_auth_tok: The key contents
286
* @sig: The key identifier
288
* ecryptfs_global_auth_tok structs refer to authentication token keys
289
* in the user keyring that apply to newly created files. A list of
290
* these objects hangs off of the mount_crypt_stat struct for any
291
* given eCryptfs mount. This struct maintains a reference to both the
292
* key contents and the key itself so that the key can be put on
295
struct ecryptfs_global_auth_tok {
296
#define ECRYPTFS_AUTH_TOK_INVALID 0x00000001
298
struct list_head mount_crypt_stat_list;
299
struct key *global_auth_tok_key;
300
struct ecryptfs_auth_tok *global_auth_tok;
301
unsigned char sig[ECRYPTFS_SIG_SIZE_HEX + 1];
305
* ecryptfs_key_tfm - Persistent key tfm
306
* @key_tfm: crypto API handle to the key
307
* @key_size: Key size in bytes
308
* @key_tfm_mutex: Mutex to ensure only one operation in eCryptfs is
309
* using the persistent TFM at any point in time
310
* @key_tfm_list: Handle to hang this off the module-wide TFM list
311
* @cipher_name: String name for the cipher for this TFM
313
* Typically, eCryptfs will use the same ciphers repeatedly throughout
314
* the course of its operations. In order to avoid unnecessarily
315
* destroying and initializing the same cipher repeatedly, eCryptfs
316
* keeps a list of crypto API contexts around to use when needed.
318
struct ecryptfs_key_tfm {
319
struct crypto_blkcipher *key_tfm;
321
struct mutex key_tfm_mutex;
322
struct list_head key_tfm_list;
323
unsigned char cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE + 1];
326
extern struct list_head key_tfm_list;
327
extern struct mutex key_tfm_list_mutex;
330
* This struct is to enable a mount-wide passphrase/salt combo. This
331
* is more or less a stopgap to provide similar functionality to other
332
* crypto filesystems like EncFS or CFS until full policy support is
333
* implemented in eCryptfs.
335
struct ecryptfs_mount_crypt_stat {
336
/* Pointers to memory we do not own, do not free these */
337
#define ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED 0x00000001
338
#define ECRYPTFS_XATTR_METADATA_ENABLED 0x00000002
339
#define ECRYPTFS_ENCRYPTED_VIEW_ENABLED 0x00000004
340
#define ECRYPTFS_MOUNT_CRYPT_STAT_INITIALIZED 0x00000008
342
struct list_head global_auth_tok_list;
343
struct mutex global_auth_tok_list_mutex;
344
size_t num_global_auth_toks;
345
size_t global_default_cipher_key_size;
346
unsigned char global_default_cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE
350
/* superblock private data. */
351
struct ecryptfs_sb_info {
352
struct super_block *wsi_sb;
353
struct ecryptfs_mount_crypt_stat mount_crypt_stat;
356
/* file private data. */
357
struct ecryptfs_file_info {
358
struct file *wfi_file;
359
struct ecryptfs_crypt_stat *crypt_stat;
362
/* auth_tok <=> encrypted_session_key mappings */
363
struct ecryptfs_auth_tok_list_item {
364
unsigned char encrypted_session_key[ECRYPTFS_MAX_KEY_BYTES];
365
struct list_head list;
366
struct ecryptfs_auth_tok auth_tok;
369
struct ecryptfs_message {
375
struct ecryptfs_msg_ctx {
376
#define ECRYPTFS_MSG_CTX_STATE_FREE 0x0001
377
#define ECRYPTFS_MSG_CTX_STATE_PENDING 0x0002
378
#define ECRYPTFS_MSG_CTX_STATE_DONE 0x0003
381
unsigned int counter;
382
struct ecryptfs_message *msg;
383
struct task_struct *task;
384
struct list_head node;
388
extern unsigned int ecryptfs_transport;
390
struct ecryptfs_daemon_id {
393
struct hlist_node id_chain;
396
static inline struct ecryptfs_file_info *
397
ecryptfs_file_to_private(struct file *file)
399
return (struct ecryptfs_file_info *)file->private_data;
403
ecryptfs_set_file_private(struct file *file,
404
struct ecryptfs_file_info *file_info)
406
file->private_data = file_info;
409
static inline struct file *ecryptfs_file_to_lower(struct file *file)
411
return ((struct ecryptfs_file_info *)file->private_data)->wfi_file;
415
ecryptfs_set_file_lower(struct file *file, struct file *lower_file)
417
((struct ecryptfs_file_info *)file->private_data)->wfi_file =
421
static inline struct ecryptfs_inode_info *
422
ecryptfs_inode_to_private(struct inode *inode)
424
return container_of(inode, struct ecryptfs_inode_info, vfs_inode);
427
static inline struct inode *ecryptfs_inode_to_lower(struct inode *inode)
429
return ecryptfs_inode_to_private(inode)->wii_inode;
433
ecryptfs_set_inode_lower(struct inode *inode, struct inode *lower_inode)
435
ecryptfs_inode_to_private(inode)->wii_inode = lower_inode;
438
static inline struct ecryptfs_sb_info *
439
ecryptfs_superblock_to_private(struct super_block *sb)
441
return (struct ecryptfs_sb_info *)sb->s_fs_info;
445
ecryptfs_set_superblock_private(struct super_block *sb,
446
struct ecryptfs_sb_info *sb_info)
448
sb->s_fs_info = sb_info;
451
static inline struct super_block *
452
ecryptfs_superblock_to_lower(struct super_block *sb)
454
return ((struct ecryptfs_sb_info *)sb->s_fs_info)->wsi_sb;
458
ecryptfs_set_superblock_lower(struct super_block *sb,
459
struct super_block *lower_sb)
461
((struct ecryptfs_sb_info *)sb->s_fs_info)->wsi_sb = lower_sb;
464
static inline struct ecryptfs_dentry_info *
465
ecryptfs_dentry_to_private(struct dentry *dentry)
467
return (struct ecryptfs_dentry_info *)dentry->d_fsdata;
471
ecryptfs_set_dentry_private(struct dentry *dentry,
472
struct ecryptfs_dentry_info *dentry_info)
474
dentry->d_fsdata = dentry_info;
477
static inline struct dentry *
478
ecryptfs_dentry_to_lower(struct dentry *dentry)
480
return ((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path.dentry;
484
ecryptfs_set_dentry_lower(struct dentry *dentry, struct dentry *lower_dentry)
486
((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path.dentry =
490
static inline struct vfsmount *
491
ecryptfs_dentry_to_lower_mnt(struct dentry *dentry)
493
return ((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path.mnt;
497
ecryptfs_set_dentry_lower_mnt(struct dentry *dentry, struct vfsmount *lower_mnt)
499
((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path.mnt =
503
#define ecryptfs_printk(type, fmt, arg...) \
504
__ecryptfs_printk(type "%s: " fmt, __FUNCTION__, ## arg);
505
void __ecryptfs_printk(const char *fmt, ...);
507
extern const struct file_operations ecryptfs_main_fops;
508
extern const struct file_operations ecryptfs_dir_fops;
509
extern const struct inode_operations ecryptfs_main_iops;
510
extern const struct inode_operations ecryptfs_dir_iops;
511
extern const struct inode_operations ecryptfs_symlink_iops;
512
extern const struct super_operations ecryptfs_sops;
513
extern struct dentry_operations ecryptfs_dops;
514
extern struct address_space_operations ecryptfs_aops;
515
extern int ecryptfs_verbosity;
516
extern unsigned int ecryptfs_message_buf_len;
517
extern signed long ecryptfs_message_wait_timeout;
518
extern unsigned int ecryptfs_number_of_users;
520
extern struct kmem_cache *ecryptfs_auth_tok_list_item_cache;
521
extern struct kmem_cache *ecryptfs_file_info_cache;
522
extern struct kmem_cache *ecryptfs_dentry_info_cache;
523
extern struct kmem_cache *ecryptfs_inode_info_cache;
524
extern struct kmem_cache *ecryptfs_sb_info_cache;
525
extern struct kmem_cache *ecryptfs_header_cache_1;
526
extern struct kmem_cache *ecryptfs_header_cache_2;
527
extern struct kmem_cache *ecryptfs_xattr_cache;
528
extern struct kmem_cache *ecryptfs_lower_page_cache;
529
extern struct kmem_cache *ecryptfs_key_record_cache;
530
extern struct kmem_cache *ecryptfs_key_sig_cache;
531
extern struct kmem_cache *ecryptfs_global_auth_tok_cache;
532
extern struct kmem_cache *ecryptfs_key_tfm_cache;
534
int ecryptfs_interpose(struct dentry *hidden_dentry,
535
struct dentry *this_dentry, struct super_block *sb,
537
int ecryptfs_fill_zeros(struct file *file, loff_t new_length);
538
int ecryptfs_decode_filename(struct ecryptfs_crypt_stat *crypt_stat,
539
const char *name, int length,
540
char **decrypted_name);
541
int ecryptfs_encode_filename(struct ecryptfs_crypt_stat *crypt_stat,
542
const char *name, int length,
543
char **encoded_name);
544
struct dentry *ecryptfs_lower_dentry(struct dentry *this_dentry);
545
void ecryptfs_dump_hex(char *data, int bytes);
546
int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg,
548
int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat);
549
void ecryptfs_rotate_iv(unsigned char *iv);
550
void ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
551
void ecryptfs_destroy_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
552
void ecryptfs_destroy_mount_crypt_stat(
553
struct ecryptfs_mount_crypt_stat *mount_crypt_stat);
554
int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat);
555
int ecryptfs_write_inode_size_to_metadata(struct inode *ecryptfs_inode);
556
int ecryptfs_encrypt_page(struct page *page);
557
int ecryptfs_decrypt_page(struct page *page);
558
int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry);
559
int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry);
560
int ecryptfs_new_file_context(struct dentry *ecryptfs_dentry);
561
int ecryptfs_read_and_validate_header_region(char *data,
562
struct inode *ecryptfs_inode);
563
int ecryptfs_read_and_validate_xattr_region(char *page_virt,
564
struct dentry *ecryptfs_dentry);
565
u16 ecryptfs_code_for_cipher_string(struct ecryptfs_crypt_stat *crypt_stat);
566
int ecryptfs_cipher_code_to_string(char *str, u16 cipher_code);
567
void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat);
568
int ecryptfs_generate_key_packet_set(char *dest_base,
569
struct ecryptfs_crypt_stat *crypt_stat,
570
struct dentry *ecryptfs_dentry,
571
size_t *len, size_t max);
573
ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
574
unsigned char *src, struct dentry *ecryptfs_dentry);
575
int ecryptfs_truncate(struct dentry *dentry, loff_t new_length);
576
int ecryptfs_inode_test(struct inode *inode, void *candidate_lower_inode);
577
int ecryptfs_inode_set(struct inode *inode, void *lower_inode);
578
void ecryptfs_init_inode(struct inode *inode, struct inode *lower_inode);
579
ssize_t ecryptfs_getxattr(struct dentry *dentry, const char *name, void *value,
582
ecryptfs_getxattr_lower(struct dentry *lower_dentry, const char *name,
583
void *value, size_t size);
585
ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
586
size_t size, int flags);
587
int ecryptfs_read_xattr_region(char *page_virt, struct inode *ecryptfs_inode);
588
int ecryptfs_process_helo(unsigned int transport, uid_t uid, pid_t pid);
589
int ecryptfs_process_quit(uid_t uid, pid_t pid);
590
int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t uid,
592
int ecryptfs_send_message(unsigned int transport, char *data, int data_len,
593
struct ecryptfs_msg_ctx **msg_ctx);
594
int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx,
595
struct ecryptfs_message **emsg);
596
int ecryptfs_init_messaging(unsigned int transport);
597
void ecryptfs_release_messaging(unsigned int transport);
599
int ecryptfs_send_netlink(char *data, int data_len,
600
struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
601
u16 msg_flags, pid_t daemon_pid);
602
int ecryptfs_init_netlink(void);
603
void ecryptfs_release_netlink(void);
605
int ecryptfs_send_connector(char *data, int data_len,
606
struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
607
u16 msg_flags, pid_t daemon_pid);
608
int ecryptfs_init_connector(void);
609
void ecryptfs_release_connector(void);
611
ecryptfs_write_header_metadata(char *virt,
612
struct ecryptfs_crypt_stat *crypt_stat,
614
int ecryptfs_add_keysig(struct ecryptfs_crypt_stat *crypt_stat, char *sig);
616
ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
618
int ecryptfs_get_global_auth_tok_for_sig(
619
struct ecryptfs_global_auth_tok **global_auth_tok,
620
struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig);
622
ecryptfs_add_new_key_tfm(struct ecryptfs_key_tfm **key_tfm, char *cipher_name,
624
int ecryptfs_init_crypto(void);
625
int ecryptfs_destroy_crypto(void);
626
int ecryptfs_get_tfm_and_mutex_for_cipher_name(struct crypto_blkcipher **tfm,
627
struct mutex **tfm_mutex,
629
int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
630
struct ecryptfs_auth_tok **auth_tok,
632
int ecryptfs_write_zeros(struct file *file, pgoff_t index, int start,
634
void ecryptfs_lower_offset_for_extent(loff_t *offset, loff_t extent_num,
635
struct ecryptfs_crypt_stat *crypt_stat);
636
int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
637
loff_t offset, size_t size);
638
int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode,
639
struct page *page_for_lower,
640
size_t offset_in_page, size_t size);
641
int ecryptfs_write(struct file *ecryptfs_file, char *data, loff_t offset,
643
int ecryptfs_read_lower(char *data, loff_t offset, size_t size,
644
struct inode *ecryptfs_inode);
645
int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs,
647
size_t offset_in_page, size_t size,
648
struct inode *ecryptfs_inode);
649
int ecryptfs_read(char *data, loff_t offset, size_t size,
650
struct file *ecryptfs_file);
651
struct page *ecryptfs_get_locked_page(struct file *file, loff_t index);
653
#endif /* #ifndef ECRYPTFS_KERNEL_H */
added
removed
src/jprobes/ecryptfs_kernel.h
