Lines Matching refs:crypt_stat
62 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_calculate_md5() argument
65 int rc = crypto_shash_tfm_digest(crypt_stat->hash_tfm, src, len, dst); in ecryptfs_calculate_md5()
110 int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_derive_iv() argument
119 ecryptfs_dump_hex(crypt_stat->root_iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
125 memcpy(src, crypt_stat->root_iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
126 memset((src + crypt_stat->iv_bytes), 0, 16); in ecryptfs_derive_iv()
127 snprintf((src + crypt_stat->iv_bytes), 16, "%lld", offset); in ecryptfs_derive_iv()
130 ecryptfs_dump_hex(src, (crypt_stat->iv_bytes + 16)); in ecryptfs_derive_iv()
132 rc = ecryptfs_calculate_md5(dst, crypt_stat, src, in ecryptfs_derive_iv()
133 (crypt_stat->iv_bytes + 16)); in ecryptfs_derive_iv()
139 memcpy(iv, dst, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
142 ecryptfs_dump_hex(iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
154 int ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_init_crypt_stat() argument
168 memset((void *)crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat)); in ecryptfs_init_crypt_stat()
169 INIT_LIST_HEAD(&crypt_stat->keysig_list); in ecryptfs_init_crypt_stat()
170 mutex_init(&crypt_stat->keysig_list_mutex); in ecryptfs_init_crypt_stat()
171 mutex_init(&crypt_stat->cs_mutex); in ecryptfs_init_crypt_stat()
172 mutex_init(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_stat()
173 crypt_stat->hash_tfm = tfm; in ecryptfs_init_crypt_stat()
174 crypt_stat->flags |= ECRYPTFS_STRUCT_INITIALIZED; in ecryptfs_init_crypt_stat()
185 void ecryptfs_destroy_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_destroy_crypt_stat() argument
189 crypto_free_skcipher(crypt_stat->tfm); in ecryptfs_destroy_crypt_stat()
190 crypto_free_shash(crypt_stat->hash_tfm); in ecryptfs_destroy_crypt_stat()
192 &crypt_stat->keysig_list, crypt_stat_list) { in ecryptfs_destroy_crypt_stat()
196 memset(crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat)); in ecryptfs_destroy_crypt_stat()
274 static int crypt_scatterlist(struct ecryptfs_crypt_stat *crypt_stat, in crypt_scatterlist() argument
285 crypt_stat->key_size); in crypt_scatterlist()
286 ecryptfs_dump_hex(crypt_stat->key, in crypt_scatterlist()
287 crypt_stat->key_size); in crypt_scatterlist()
290 mutex_lock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
291 req = skcipher_request_alloc(crypt_stat->tfm, GFP_NOFS); in crypt_scatterlist()
293 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
302 if (!(crypt_stat->flags & ECRYPTFS_KEY_SET)) { in crypt_scatterlist()
303 rc = crypto_skcipher_setkey(crypt_stat->tfm, crypt_stat->key, in crypt_scatterlist()
304 crypt_stat->key_size); in crypt_scatterlist()
309 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
313 crypt_stat->flags |= ECRYPTFS_KEY_SET; in crypt_scatterlist()
315 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
330 static loff_t lower_offset_for_page(struct ecryptfs_crypt_stat *crypt_stat, in lower_offset_for_page() argument
333 return ecryptfs_lower_header_size(crypt_stat) + in lower_offset_for_page()
350 static int crypt_extent(struct ecryptfs_crypt_stat *crypt_stat, in crypt_extent() argument
359 size_t extent_size = crypt_stat->extent_size; in crypt_extent()
363 rc = ecryptfs_derive_iv(extent_iv, crypt_stat, in crypt_extent()
380 rc = crypt_scatterlist(crypt_stat, &dst_sg, &src_sg, extent_size, in crypt_extent()
412 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_encrypt_page() local
420 crypt_stat = in ecryptfs_encrypt_page()
421 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); in ecryptfs_encrypt_page()
422 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); in ecryptfs_encrypt_page()
432 extent_offset < (PAGE_SIZE / crypt_stat->extent_size); in ecryptfs_encrypt_page()
434 rc = crypt_extent(crypt_stat, enc_extent_page, page, in ecryptfs_encrypt_page()
443 lower_offset = lower_offset_for_page(crypt_stat, page); in ecryptfs_encrypt_page()
481 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_decrypt_page() local
488 crypt_stat = in ecryptfs_decrypt_page()
489 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); in ecryptfs_decrypt_page()
490 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); in ecryptfs_decrypt_page()
492 lower_offset = lower_offset_for_page(crypt_stat, page); in ecryptfs_decrypt_page()
505 extent_offset < (PAGE_SIZE / crypt_stat->extent_size); in ecryptfs_decrypt_page()
507 rc = crypt_extent(crypt_stat, page, page, in ecryptfs_decrypt_page()
530 int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_init_crypt_ctx() argument
538 crypt_stat->cipher, (int)strlen(crypt_stat->cipher), in ecryptfs_init_crypt_ctx()
539 crypt_stat->key_size << 3); in ecryptfs_init_crypt_ctx()
540 mutex_lock(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_ctx()
541 if (crypt_stat->tfm) { in ecryptfs_init_crypt_ctx()
546 crypt_stat->cipher, "cbc"); in ecryptfs_init_crypt_ctx()
549 crypt_stat->tfm = crypto_alloc_skcipher(full_alg_name, 0, 0); in ecryptfs_init_crypt_ctx()
550 if (IS_ERR(crypt_stat->tfm)) { in ecryptfs_init_crypt_ctx()
551 rc = PTR_ERR(crypt_stat->tfm); in ecryptfs_init_crypt_ctx()
552 crypt_stat->tfm = NULL; in ecryptfs_init_crypt_ctx()
558 crypto_skcipher_set_flags(crypt_stat->tfm, in ecryptfs_init_crypt_ctx()
564 mutex_unlock(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_ctx()
568 static void set_extent_mask_and_shift(struct ecryptfs_crypt_stat *crypt_stat) in set_extent_mask_and_shift() argument
572 crypt_stat->extent_mask = 0xFFFFFFFF; in set_extent_mask_and_shift()
573 crypt_stat->extent_shift = 0; in set_extent_mask_and_shift()
574 if (crypt_stat->extent_size == 0) in set_extent_mask_and_shift()
576 extent_size_tmp = crypt_stat->extent_size; in set_extent_mask_and_shift()
579 crypt_stat->extent_mask <<= 1; in set_extent_mask_and_shift()
580 crypt_stat->extent_shift++; in set_extent_mask_and_shift()
584 void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_set_default_sizes() argument
588 crypt_stat->extent_size = ECRYPTFS_DEFAULT_EXTENT_SIZE; in ecryptfs_set_default_sizes()
589 set_extent_mask_and_shift(crypt_stat); in ecryptfs_set_default_sizes()
590 crypt_stat->iv_bytes = ECRYPTFS_DEFAULT_IV_BYTES; in ecryptfs_set_default_sizes()
591 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_set_default_sizes()
592 crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; in ecryptfs_set_default_sizes()
595 crypt_stat->metadata_size = in ecryptfs_set_default_sizes()
598 crypt_stat->metadata_size = PAGE_SIZE; in ecryptfs_set_default_sizes()
607 int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_compute_root_iv() argument
612 BUG_ON(crypt_stat->iv_bytes > MD5_DIGEST_SIZE); in ecryptfs_compute_root_iv()
613 BUG_ON(crypt_stat->iv_bytes <= 0); in ecryptfs_compute_root_iv()
614 if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) { in ecryptfs_compute_root_iv()
620 rc = ecryptfs_calculate_md5(dst, crypt_stat, crypt_stat->key, in ecryptfs_compute_root_iv()
621 crypt_stat->key_size); in ecryptfs_compute_root_iv()
627 memcpy(crypt_stat->root_iv, dst, crypt_stat->iv_bytes); in ecryptfs_compute_root_iv()
630 memset(crypt_stat->root_iv, 0, crypt_stat->iv_bytes); in ecryptfs_compute_root_iv()
631 crypt_stat->flags |= ECRYPTFS_SECURITY_WARNING; in ecryptfs_compute_root_iv()
636 static void ecryptfs_generate_new_key(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_generate_new_key() argument
638 get_random_bytes(crypt_stat->key, crypt_stat->key_size); in ecryptfs_generate_new_key()
639 crypt_stat->flags |= ECRYPTFS_KEY_VALID; in ecryptfs_generate_new_key()
640 ecryptfs_compute_root_iv(crypt_stat); in ecryptfs_generate_new_key()
643 ecryptfs_dump_hex(crypt_stat->key, in ecryptfs_generate_new_key()
644 crypt_stat->key_size); in ecryptfs_generate_new_key()
657 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_copy_mount_wide_flags_to_inode_flags() argument
661 crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
663 crypt_stat->flags |= ECRYPTFS_VIEW_AS_ENCRYPTED; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
665 crypt_stat->flags |= ECRYPTFS_ENCRYPT_FILENAMES; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
668 crypt_stat->flags |= ECRYPTFS_ENCFN_USE_MOUNT_FNEK; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
671 crypt_stat->flags |= ECRYPTFS_ENCFN_USE_FEK; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
676 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_copy_mount_wide_sigs_to_inode_sigs() argument
682 mutex_lock(&crypt_stat->keysig_list_mutex); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
690 rc = ecryptfs_add_keysig(crypt_stat, global_auth_tok->sig); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
699 mutex_unlock(&crypt_stat->keysig_list_mutex); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
711 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_set_default_crypt_stat_vals() argument
714 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_set_default_crypt_stat_vals()
716 ecryptfs_set_default_sizes(crypt_stat); in ecryptfs_set_default_crypt_stat_vals()
717 strcpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER); in ecryptfs_set_default_crypt_stat_vals()
718 crypt_stat->key_size = ECRYPTFS_DEFAULT_KEY_BYTES; in ecryptfs_set_default_crypt_stat_vals()
719 crypt_stat->flags &= ~(ECRYPTFS_KEY_VALID); in ecryptfs_set_default_crypt_stat_vals()
720 crypt_stat->file_version = ECRYPTFS_FILE_VERSION; in ecryptfs_set_default_crypt_stat_vals()
721 crypt_stat->mount_crypt_stat = mount_crypt_stat; in ecryptfs_set_default_crypt_stat_vals()
745 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_new_file_context() local
746 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_new_file_context()
753 ecryptfs_set_default_crypt_stat_vals(crypt_stat, mount_crypt_stat); in ecryptfs_new_file_context()
754 crypt_stat->flags |= (ECRYPTFS_ENCRYPTED | ECRYPTFS_KEY_VALID); in ecryptfs_new_file_context()
755 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_new_file_context()
757 rc = ecryptfs_copy_mount_wide_sigs_to_inode_sigs(crypt_stat, in ecryptfs_new_file_context()
766 memcpy(crypt_stat->cipher, in ecryptfs_new_file_context()
769 crypt_stat->cipher[cipher_name_len] = '\0'; in ecryptfs_new_file_context()
770 crypt_stat->key_size = in ecryptfs_new_file_context()
772 ecryptfs_generate_new_key(crypt_stat); in ecryptfs_new_file_context()
773 rc = ecryptfs_init_crypt_ctx(crypt_stat); in ecryptfs_new_file_context()
777 crypt_stat->cipher, rc); in ecryptfs_new_file_context()
823 static void ecryptfs_process_flags(struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_process_flags() argument
832 crypt_stat->flags |= ecryptfs_flag_map[i].local_flag; in ecryptfs_process_flags()
834 crypt_stat->flags &= ~(ecryptfs_flag_map[i].local_flag); in ecryptfs_process_flags()
836 crypt_stat->file_version = ((flags >> 24) & 0xFF); in ecryptfs_process_flags()
860 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_crypt_stat_flags() argument
867 if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag) in ecryptfs_write_crypt_stat_flags()
870 flags |= ((((u8)crypt_stat->file_version) << 24) & 0xFF000000); in ecryptfs_write_crypt_stat_flags()
974 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_header_metadata() argument
980 header_extent_size = (u32)crypt_stat->extent_size; in ecryptfs_write_header_metadata()
982 (u16)(crypt_stat->metadata_size / crypt_stat->extent_size); in ecryptfs_write_header_metadata()
1024 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_headers_virt() argument
1034 ecryptfs_write_crypt_stat_flags((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1037 ecryptfs_write_header_metadata((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1040 rc = ecryptfs_generate_key_packet_set((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1120 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_write_metadata() local
1121 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_write_metadata()
1128 if (likely(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) { in ecryptfs_write_metadata()
1129 if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) { in ecryptfs_write_metadata()
1140 virt_len = crypt_stat->metadata_size; in ecryptfs_write_metadata()
1150 rc = ecryptfs_write_headers_virt(virt, virt_len, &size, crypt_stat, in ecryptfs_write_metadata()
1157 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_write_metadata()
1176 static int parse_header_metadata(struct ecryptfs_crypt_stat *crypt_stat, in parse_header_metadata() argument
1187 crypt_stat->metadata_size = (((size_t)num_header_extents_at_front in parse_header_metadata()
1191 && (crypt_stat->metadata_size in parse_header_metadata()
1195 crypt_stat->metadata_size); in parse_header_metadata()
1208 static void set_default_header_data(struct ecryptfs_crypt_stat *crypt_stat) in set_default_header_data() argument
1210 crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; in set_default_header_data()
1216 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_i_size_init() local
1219 crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; in ecryptfs_i_size_init()
1224 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_i_size_init()
1225 file_size += crypt_stat->metadata_size; in ecryptfs_i_size_init()
1229 crypt_stat->flags |= ECRYPTFS_I_SIZE_INITIALIZED; in ecryptfs_i_size_init()
1245 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_read_headers_virt() argument
1253 ecryptfs_set_default_sizes(crypt_stat); in ecryptfs_read_headers_virt()
1254 crypt_stat->mount_crypt_stat = &ecryptfs_superblock_to_private( in ecryptfs_read_headers_virt()
1260 if (!(crypt_stat->flags & ECRYPTFS_I_SIZE_INITIALIZED)) in ecryptfs_read_headers_virt()
1263 ecryptfs_process_flags(crypt_stat, (page_virt + offset), &bytes_read); in ecryptfs_read_headers_virt()
1264 if (crypt_stat->file_version > ECRYPTFS_SUPPORTED_FILE_VERSION) { in ecryptfs_read_headers_virt()
1268 crypt_stat->file_version, in ecryptfs_read_headers_virt()
1274 if (crypt_stat->file_version >= 1) { in ecryptfs_read_headers_virt()
1275 rc = parse_header_metadata(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1283 set_default_header_data(crypt_stat); in ecryptfs_read_headers_virt()
1284 rc = ecryptfs_parse_packet_set(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1361 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_read_metadata() local
1362 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_read_metadata()
1367 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_read_metadata()
1375 rc = ecryptfs_read_lower(page_virt, 0, crypt_stat->extent_size, in ecryptfs_read_metadata()
1378 rc = ecryptfs_read_headers_virt(page_virt, crypt_stat, in ecryptfs_read_metadata()
1392 rc = ecryptfs_read_headers_virt(page_virt, crypt_stat, in ecryptfs_read_metadata()
1401 if (crypt_stat->mount_crypt_stat->flags in ecryptfs_read_metadata()
1403 crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; in ecryptfs_read_metadata()