Lines Matching refs:crypt_stat
88 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_calculate_md5() argument
93 .tfm = crypt_stat->hash_tfm, in ecryptfs_calculate_md5()
98 mutex_lock(&crypt_stat->cs_hash_tfm_mutex); in ecryptfs_calculate_md5()
110 crypt_stat->hash_tfm = desc.tfm; in ecryptfs_calculate_md5()
134 mutex_unlock(&crypt_stat->cs_hash_tfm_mutex); in ecryptfs_calculate_md5()
171 int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_derive_iv() argument
180 ecryptfs_dump_hex(crypt_stat->root_iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
186 memcpy(src, crypt_stat->root_iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
187 memset((src + crypt_stat->iv_bytes), 0, 16); in ecryptfs_derive_iv()
188 snprintf((src + crypt_stat->iv_bytes), 16, "%lld", offset); in ecryptfs_derive_iv()
191 ecryptfs_dump_hex(src, (crypt_stat->iv_bytes + 16)); in ecryptfs_derive_iv()
193 rc = ecryptfs_calculate_md5(dst, crypt_stat, src, in ecryptfs_derive_iv()
194 (crypt_stat->iv_bytes + 16)); in ecryptfs_derive_iv()
200 memcpy(iv, dst, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
203 ecryptfs_dump_hex(iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
216 ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_init_crypt_stat() argument
218 memset((void *)crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat)); in ecryptfs_init_crypt_stat()
219 INIT_LIST_HEAD(&crypt_stat->keysig_list); in ecryptfs_init_crypt_stat()
220 mutex_init(&crypt_stat->keysig_list_mutex); in ecryptfs_init_crypt_stat()
221 mutex_init(&crypt_stat->cs_mutex); in ecryptfs_init_crypt_stat()
222 mutex_init(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_stat()
223 mutex_init(&crypt_stat->cs_hash_tfm_mutex); in ecryptfs_init_crypt_stat()
224 crypt_stat->flags |= ECRYPTFS_STRUCT_INITIALIZED; in ecryptfs_init_crypt_stat()
233 void ecryptfs_destroy_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_destroy_crypt_stat() argument
237 if (crypt_stat->tfm) in ecryptfs_destroy_crypt_stat()
238 crypto_free_ablkcipher(crypt_stat->tfm); in ecryptfs_destroy_crypt_stat()
239 if (crypt_stat->hash_tfm) in ecryptfs_destroy_crypt_stat()
240 crypto_free_hash(crypt_stat->hash_tfm); in ecryptfs_destroy_crypt_stat()
242 &crypt_stat->keysig_list, crypt_stat_list) { in ecryptfs_destroy_crypt_stat()
246 memset(crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat)); in ecryptfs_destroy_crypt_stat()
340 static int crypt_scatterlist(struct ecryptfs_crypt_stat *crypt_stat, in crypt_scatterlist() argument
349 BUG_ON(!crypt_stat || !crypt_stat->tfm in crypt_scatterlist()
350 || !(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED)); in crypt_scatterlist()
353 crypt_stat->key_size); in crypt_scatterlist()
354 ecryptfs_dump_hex(crypt_stat->key, in crypt_scatterlist()
355 crypt_stat->key_size); in crypt_scatterlist()
360 mutex_lock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
361 req = ablkcipher_request_alloc(crypt_stat->tfm, GFP_NOFS); in crypt_scatterlist()
363 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
372 if (!(crypt_stat->flags & ECRYPTFS_KEY_SET)) { in crypt_scatterlist()
373 rc = crypto_ablkcipher_setkey(crypt_stat->tfm, crypt_stat->key, in crypt_scatterlist()
374 crypt_stat->key_size); in crypt_scatterlist()
379 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
383 crypt_stat->flags |= ECRYPTFS_KEY_SET; in crypt_scatterlist()
385 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
406 static loff_t lower_offset_for_page(struct ecryptfs_crypt_stat *crypt_stat, in lower_offset_for_page() argument
409 return ecryptfs_lower_header_size(crypt_stat) + in lower_offset_for_page()
426 static int crypt_extent(struct ecryptfs_crypt_stat *crypt_stat, in crypt_extent() argument
435 size_t extent_size = crypt_stat->extent_size; in crypt_extent()
439 rc = ecryptfs_derive_iv(extent_iv, crypt_stat, in crypt_extent()
456 rc = crypt_scatterlist(crypt_stat, &dst_sg, &src_sg, extent_size, in crypt_extent()
488 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_encrypt_page() local
496 crypt_stat = in ecryptfs_encrypt_page()
497 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); in ecryptfs_encrypt_page()
498 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); in ecryptfs_encrypt_page()
508 extent_offset < (PAGE_CACHE_SIZE / crypt_stat->extent_size); in ecryptfs_encrypt_page()
510 rc = crypt_extent(crypt_stat, enc_extent_page, page, in ecryptfs_encrypt_page()
519 lower_offset = lower_offset_for_page(crypt_stat, page); in ecryptfs_encrypt_page()
557 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_decrypt_page() local
564 crypt_stat = in ecryptfs_decrypt_page()
565 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); in ecryptfs_decrypt_page()
566 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); in ecryptfs_decrypt_page()
568 lower_offset = lower_offset_for_page(crypt_stat, page); in ecryptfs_decrypt_page()
581 extent_offset < (PAGE_CACHE_SIZE / crypt_stat->extent_size); in ecryptfs_decrypt_page()
583 rc = crypt_extent(crypt_stat, page, page, in ecryptfs_decrypt_page()
606 int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_init_crypt_ctx() argument
614 crypt_stat->cipher, (int)strlen(crypt_stat->cipher), in ecryptfs_init_crypt_ctx()
615 crypt_stat->key_size << 3); in ecryptfs_init_crypt_ctx()
616 mutex_lock(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_ctx()
617 if (crypt_stat->tfm) { in ecryptfs_init_crypt_ctx()
622 crypt_stat->cipher, "cbc"); in ecryptfs_init_crypt_ctx()
625 crypt_stat->tfm = crypto_alloc_ablkcipher(full_alg_name, 0, 0); in ecryptfs_init_crypt_ctx()
626 if (IS_ERR(crypt_stat->tfm)) { in ecryptfs_init_crypt_ctx()
627 rc = PTR_ERR(crypt_stat->tfm); in ecryptfs_init_crypt_ctx()
628 crypt_stat->tfm = NULL; in ecryptfs_init_crypt_ctx()
634 crypto_ablkcipher_set_flags(crypt_stat->tfm, CRYPTO_TFM_REQ_WEAK_KEY); in ecryptfs_init_crypt_ctx()
639 mutex_unlock(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_ctx()
643 static void set_extent_mask_and_shift(struct ecryptfs_crypt_stat *crypt_stat) in set_extent_mask_and_shift() argument
647 crypt_stat->extent_mask = 0xFFFFFFFF; in set_extent_mask_and_shift()
648 crypt_stat->extent_shift = 0; in set_extent_mask_and_shift()
649 if (crypt_stat->extent_size == 0) in set_extent_mask_and_shift()
651 extent_size_tmp = crypt_stat->extent_size; in set_extent_mask_and_shift()
654 crypt_stat->extent_mask <<= 1; in set_extent_mask_and_shift()
655 crypt_stat->extent_shift++; in set_extent_mask_and_shift()
659 void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_set_default_sizes() argument
663 crypt_stat->extent_size = ECRYPTFS_DEFAULT_EXTENT_SIZE; in ecryptfs_set_default_sizes()
664 set_extent_mask_and_shift(crypt_stat); in ecryptfs_set_default_sizes()
665 crypt_stat->iv_bytes = ECRYPTFS_DEFAULT_IV_BYTES; in ecryptfs_set_default_sizes()
666 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_set_default_sizes()
667 crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; in ecryptfs_set_default_sizes()
670 crypt_stat->metadata_size = in ecryptfs_set_default_sizes()
673 crypt_stat->metadata_size = PAGE_CACHE_SIZE; in ecryptfs_set_default_sizes()
683 int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_compute_root_iv() argument
688 BUG_ON(crypt_stat->iv_bytes > MD5_DIGEST_SIZE); in ecryptfs_compute_root_iv()
689 BUG_ON(crypt_stat->iv_bytes <= 0); in ecryptfs_compute_root_iv()
690 if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) { in ecryptfs_compute_root_iv()
696 rc = ecryptfs_calculate_md5(dst, crypt_stat, crypt_stat->key, in ecryptfs_compute_root_iv()
697 crypt_stat->key_size); in ecryptfs_compute_root_iv()
703 memcpy(crypt_stat->root_iv, dst, crypt_stat->iv_bytes); in ecryptfs_compute_root_iv()
706 memset(crypt_stat->root_iv, 0, crypt_stat->iv_bytes); in ecryptfs_compute_root_iv()
707 crypt_stat->flags |= ECRYPTFS_SECURITY_WARNING; in ecryptfs_compute_root_iv()
712 static void ecryptfs_generate_new_key(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_generate_new_key() argument
714 get_random_bytes(crypt_stat->key, crypt_stat->key_size); in ecryptfs_generate_new_key()
715 crypt_stat->flags |= ECRYPTFS_KEY_VALID; in ecryptfs_generate_new_key()
716 ecryptfs_compute_root_iv(crypt_stat); in ecryptfs_generate_new_key()
719 ecryptfs_dump_hex(crypt_stat->key, in ecryptfs_generate_new_key()
720 crypt_stat->key_size); in ecryptfs_generate_new_key()
733 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_copy_mount_wide_flags_to_inode_flags() argument
737 crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
739 crypt_stat->flags |= ECRYPTFS_VIEW_AS_ENCRYPTED; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
741 crypt_stat->flags |= ECRYPTFS_ENCRYPT_FILENAMES; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
744 crypt_stat->flags |= ECRYPTFS_ENCFN_USE_MOUNT_FNEK; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
747 crypt_stat->flags |= ECRYPTFS_ENCFN_USE_FEK; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
752 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_copy_mount_wide_sigs_to_inode_sigs() argument
758 mutex_lock(&crypt_stat->keysig_list_mutex); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
766 rc = ecryptfs_add_keysig(crypt_stat, global_auth_tok->sig); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
775 mutex_unlock(&crypt_stat->keysig_list_mutex); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
787 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_set_default_crypt_stat_vals() argument
790 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_set_default_crypt_stat_vals()
792 ecryptfs_set_default_sizes(crypt_stat); in ecryptfs_set_default_crypt_stat_vals()
793 strcpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER); in ecryptfs_set_default_crypt_stat_vals()
794 crypt_stat->key_size = ECRYPTFS_DEFAULT_KEY_BYTES; in ecryptfs_set_default_crypt_stat_vals()
795 crypt_stat->flags &= ~(ECRYPTFS_KEY_VALID); in ecryptfs_set_default_crypt_stat_vals()
796 crypt_stat->file_version = ECRYPTFS_FILE_VERSION; in ecryptfs_set_default_crypt_stat_vals()
797 crypt_stat->mount_crypt_stat = mount_crypt_stat; in ecryptfs_set_default_crypt_stat_vals()
821 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_new_file_context() local
822 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_new_file_context()
829 ecryptfs_set_default_crypt_stat_vals(crypt_stat, mount_crypt_stat); in ecryptfs_new_file_context()
830 crypt_stat->flags |= (ECRYPTFS_ENCRYPTED | ECRYPTFS_KEY_VALID); in ecryptfs_new_file_context()
831 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_new_file_context()
833 rc = ecryptfs_copy_mount_wide_sigs_to_inode_sigs(crypt_stat, in ecryptfs_new_file_context()
842 memcpy(crypt_stat->cipher, in ecryptfs_new_file_context()
845 crypt_stat->cipher[cipher_name_len] = '\0'; in ecryptfs_new_file_context()
846 crypt_stat->key_size = in ecryptfs_new_file_context()
848 ecryptfs_generate_new_key(crypt_stat); in ecryptfs_new_file_context()
849 rc = ecryptfs_init_crypt_ctx(crypt_stat); in ecryptfs_new_file_context()
853 crypt_stat->cipher, rc); in ecryptfs_new_file_context()
901 static int ecryptfs_process_flags(struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_process_flags() argument
912 crypt_stat->flags |= ecryptfs_flag_map[i].local_flag; in ecryptfs_process_flags()
914 crypt_stat->flags &= ~(ecryptfs_flag_map[i].local_flag); in ecryptfs_process_flags()
916 crypt_stat->file_version = ((flags >> 24) & 0xFF); in ecryptfs_process_flags()
941 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_crypt_stat_flags() argument
949 if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag) in ecryptfs_write_crypt_stat_flags()
952 flags |= ((((u8)crypt_stat->file_version) << 24) & 0xFF000000); in ecryptfs_write_crypt_stat_flags()
1054 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_header_metadata() argument
1060 header_extent_size = (u32)crypt_stat->extent_size; in ecryptfs_write_header_metadata()
1062 (u16)(crypt_stat->metadata_size / crypt_stat->extent_size); in ecryptfs_write_header_metadata()
1104 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_headers_virt() argument
1114 ecryptfs_write_crypt_stat_flags((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1117 ecryptfs_write_header_metadata((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1120 rc = ecryptfs_generate_key_packet_set((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1187 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_write_metadata() local
1188 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_write_metadata()
1195 if (likely(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) { in ecryptfs_write_metadata()
1196 if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) { in ecryptfs_write_metadata()
1207 virt_len = crypt_stat->metadata_size; in ecryptfs_write_metadata()
1217 rc = ecryptfs_write_headers_virt(virt, virt_len, &size, crypt_stat, in ecryptfs_write_metadata()
1224 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_write_metadata()
1243 static int parse_header_metadata(struct ecryptfs_crypt_stat *crypt_stat, in parse_header_metadata() argument
1254 crypt_stat->metadata_size = (((size_t)num_header_extents_at_front in parse_header_metadata()
1258 && (crypt_stat->metadata_size in parse_header_metadata()
1262 crypt_stat->metadata_size); in parse_header_metadata()
1275 static void set_default_header_data(struct ecryptfs_crypt_stat *crypt_stat) in set_default_header_data() argument
1277 crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; in set_default_header_data()
1283 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_i_size_init() local
1286 crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; in ecryptfs_i_size_init()
1291 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_i_size_init()
1292 file_size += crypt_stat->metadata_size; in ecryptfs_i_size_init()
1296 crypt_stat->flags |= ECRYPTFS_I_SIZE_INITIALIZED; in ecryptfs_i_size_init()
1312 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_read_headers_virt() argument
1320 ecryptfs_set_default_sizes(crypt_stat); in ecryptfs_read_headers_virt()
1321 crypt_stat->mount_crypt_stat = &ecryptfs_superblock_to_private( in ecryptfs_read_headers_virt()
1327 if (!(crypt_stat->flags & ECRYPTFS_I_SIZE_INITIALIZED)) in ecryptfs_read_headers_virt()
1330 rc = ecryptfs_process_flags(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1336 if (crypt_stat->file_version > ECRYPTFS_SUPPORTED_FILE_VERSION) { in ecryptfs_read_headers_virt()
1340 crypt_stat->file_version, in ecryptfs_read_headers_virt()
1346 if (crypt_stat->file_version >= 1) { in ecryptfs_read_headers_virt()
1347 rc = parse_header_metadata(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1355 set_default_header_data(crypt_stat); in ecryptfs_read_headers_virt()
1356 rc = ecryptfs_parse_packet_set(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1428 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_read_metadata() local
1429 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_read_metadata()
1434 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_read_metadata()
1444 rc = ecryptfs_read_lower(page_virt, 0, crypt_stat->extent_size, in ecryptfs_read_metadata()
1447 rc = ecryptfs_read_headers_virt(page_virt, crypt_stat, in ecryptfs_read_metadata()
1461 rc = ecryptfs_read_headers_virt(page_virt, crypt_stat, in ecryptfs_read_metadata()
1470 if (crypt_stat->mount_crypt_stat->flags in ecryptfs_read_metadata()
1472 crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; in ecryptfs_read_metadata()
1502 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_encrypt_filename() argument
1509 if ((crypt_stat && (crypt_stat->flags & ECRYPTFS_ENCFN_USE_MOUNT_FNEK)) in ecryptfs_encrypt_filename()
1947 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_encrypt_and_encode_filename() argument
1956 if ((crypt_stat && (crypt_stat->flags & ECRYPTFS_ENCRYPT_FILENAMES)) in ecryptfs_encrypt_and_encode_filename()
1971 rc = ecryptfs_encrypt_filename(filename, crypt_stat, in ecryptfs_encrypt_and_encode_filename()
1983 if ((crypt_stat && (crypt_stat->flags in ecryptfs_encrypt_and_encode_filename()
2005 if ((crypt_stat && (crypt_stat->flags in ecryptfs_encrypt_and_encode_filename()