Lines Matching refs:crypt_stat
82 void ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_derive_iv() argument
90 ecryptfs_dump_hex(crypt_stat->root_iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
96 memcpy(src, crypt_stat->root_iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
97 memset((src + crypt_stat->iv_bytes), 0, 16); in ecryptfs_derive_iv()
98 snprintf((src + crypt_stat->iv_bytes), 16, "%lld", offset); in ecryptfs_derive_iv()
101 ecryptfs_dump_hex(src, (crypt_stat->iv_bytes + 16)); in ecryptfs_derive_iv()
103 md5(src, crypt_stat->iv_bytes + 16, dst); in ecryptfs_derive_iv()
104 memcpy(iv, dst, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
107 ecryptfs_dump_hex(iv, crypt_stat->iv_bytes); in ecryptfs_derive_iv()
117 void ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_init_crypt_stat() argument
119 memset((void *)crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat)); in ecryptfs_init_crypt_stat()
120 INIT_LIST_HEAD(&crypt_stat->keysig_list); in ecryptfs_init_crypt_stat()
121 mutex_init(&crypt_stat->keysig_list_mutex); in ecryptfs_init_crypt_stat()
122 mutex_init(&crypt_stat->cs_mutex); in ecryptfs_init_crypt_stat()
123 mutex_init(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_stat()
124 crypt_stat->flags |= ECRYPTFS_STRUCT_INITIALIZED; in ecryptfs_init_crypt_stat()
133 void ecryptfs_destroy_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_destroy_crypt_stat() argument
137 crypto_free_skcipher(crypt_stat->tfm); in ecryptfs_destroy_crypt_stat()
139 &crypt_stat->keysig_list, crypt_stat_list) { in ecryptfs_destroy_crypt_stat()
143 memset(crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat)); in ecryptfs_destroy_crypt_stat()
221 static int crypt_scatterlist(struct ecryptfs_crypt_stat *crypt_stat, in crypt_scatterlist() argument
232 crypt_stat->key_size); in crypt_scatterlist()
233 ecryptfs_dump_hex(crypt_stat->key, in crypt_scatterlist()
234 crypt_stat->key_size); in crypt_scatterlist()
237 mutex_lock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
238 req = skcipher_request_alloc(crypt_stat->tfm, GFP_NOFS); in crypt_scatterlist()
240 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
249 if (!(crypt_stat->flags & ECRYPTFS_KEY_SET)) { in crypt_scatterlist()
250 rc = crypto_skcipher_setkey(crypt_stat->tfm, crypt_stat->key, in crypt_scatterlist()
251 crypt_stat->key_size); in crypt_scatterlist()
256 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
260 crypt_stat->flags |= ECRYPTFS_KEY_SET; in crypt_scatterlist()
262 mutex_unlock(&crypt_stat->cs_tfm_mutex); in crypt_scatterlist()
277 static loff_t lower_offset_for_page(struct ecryptfs_crypt_stat *crypt_stat, in lower_offset_for_page() argument
280 return ecryptfs_lower_header_size(crypt_stat) + in lower_offset_for_page()
298 static int crypt_extent(struct ecryptfs_crypt_stat *crypt_stat, in crypt_extent() argument
307 size_t extent_size = crypt_stat->extent_size; in crypt_extent()
311 ecryptfs_derive_iv(extent_iv, crypt_stat, extent_base + extent_offset); in crypt_extent()
321 rc = crypt_scatterlist(crypt_stat, &dst_sg, &src_sg, extent_size, in crypt_extent()
353 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_encrypt_page() local
361 crypt_stat = in ecryptfs_encrypt_page()
362 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); in ecryptfs_encrypt_page()
363 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); in ecryptfs_encrypt_page()
373 extent_offset < (PAGE_SIZE / crypt_stat->extent_size); in ecryptfs_encrypt_page()
375 rc = crypt_extent(crypt_stat, enc_extent_page, in ecryptfs_encrypt_page()
385 lower_offset = lower_offset_for_page(crypt_stat, folio); in ecryptfs_encrypt_page()
423 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_decrypt_page() local
430 crypt_stat = in ecryptfs_decrypt_page()
431 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); in ecryptfs_decrypt_page()
432 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); in ecryptfs_decrypt_page()
434 lower_offset = lower_offset_for_page(crypt_stat, folio); in ecryptfs_decrypt_page()
447 extent_offset < (PAGE_SIZE / crypt_stat->extent_size); in ecryptfs_decrypt_page()
450 rc = crypt_extent(crypt_stat, page, page, folio->index, in ecryptfs_decrypt_page()
473 int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_init_crypt_ctx() argument
481 crypt_stat->cipher, (int)strlen(crypt_stat->cipher), in ecryptfs_init_crypt_ctx()
482 crypt_stat->key_size << 3); in ecryptfs_init_crypt_ctx()
483 mutex_lock(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_ctx()
484 if (crypt_stat->tfm) { in ecryptfs_init_crypt_ctx()
489 crypt_stat->cipher, "cbc"); in ecryptfs_init_crypt_ctx()
492 crypt_stat->tfm = crypto_alloc_skcipher(full_alg_name, 0, 0); in ecryptfs_init_crypt_ctx()
493 if (IS_ERR(crypt_stat->tfm)) { in ecryptfs_init_crypt_ctx()
494 rc = PTR_ERR(crypt_stat->tfm); in ecryptfs_init_crypt_ctx()
495 crypt_stat->tfm = NULL; in ecryptfs_init_crypt_ctx()
501 crypto_skcipher_set_flags(crypt_stat->tfm, in ecryptfs_init_crypt_ctx()
507 mutex_unlock(&crypt_stat->cs_tfm_mutex); in ecryptfs_init_crypt_ctx()
511 static void set_extent_mask_and_shift(struct ecryptfs_crypt_stat *crypt_stat) in set_extent_mask_and_shift() argument
515 crypt_stat->extent_mask = 0xFFFFFFFF; in set_extent_mask_and_shift()
516 crypt_stat->extent_shift = 0; in set_extent_mask_and_shift()
517 if (crypt_stat->extent_size == 0) in set_extent_mask_and_shift()
519 extent_size_tmp = crypt_stat->extent_size; in set_extent_mask_and_shift()
522 crypt_stat->extent_mask <<= 1; in set_extent_mask_and_shift()
523 crypt_stat->extent_shift++; in set_extent_mask_and_shift()
527 void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_set_default_sizes() argument
531 crypt_stat->extent_size = ECRYPTFS_DEFAULT_EXTENT_SIZE; in ecryptfs_set_default_sizes()
532 set_extent_mask_and_shift(crypt_stat); in ecryptfs_set_default_sizes()
533 crypt_stat->iv_bytes = ECRYPTFS_DEFAULT_IV_BYTES; in ecryptfs_set_default_sizes()
534 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_set_default_sizes()
535 crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; in ecryptfs_set_default_sizes()
538 crypt_stat->metadata_size = in ecryptfs_set_default_sizes()
541 crypt_stat->metadata_size = PAGE_SIZE; in ecryptfs_set_default_sizes()
550 int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_compute_root_iv() argument
554 BUG_ON(crypt_stat->iv_bytes > MD5_DIGEST_SIZE); in ecryptfs_compute_root_iv()
555 BUG_ON(crypt_stat->iv_bytes <= 0); in ecryptfs_compute_root_iv()
556 if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) { in ecryptfs_compute_root_iv()
559 memset(crypt_stat->root_iv, 0, crypt_stat->iv_bytes); in ecryptfs_compute_root_iv()
560 crypt_stat->flags |= ECRYPTFS_SECURITY_WARNING; in ecryptfs_compute_root_iv()
563 md5(crypt_stat->key, crypt_stat->key_size, dst); in ecryptfs_compute_root_iv()
564 memcpy(crypt_stat->root_iv, dst, crypt_stat->iv_bytes); in ecryptfs_compute_root_iv()
568 static void ecryptfs_generate_new_key(struct ecryptfs_crypt_stat *crypt_stat) in ecryptfs_generate_new_key() argument
570 get_random_bytes(crypt_stat->key, crypt_stat->key_size); in ecryptfs_generate_new_key()
571 crypt_stat->flags |= ECRYPTFS_KEY_VALID; in ecryptfs_generate_new_key()
572 ecryptfs_compute_root_iv(crypt_stat); in ecryptfs_generate_new_key()
575 ecryptfs_dump_hex(crypt_stat->key, in ecryptfs_generate_new_key()
576 crypt_stat->key_size); in ecryptfs_generate_new_key()
589 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_copy_mount_wide_flags_to_inode_flags() argument
593 crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
595 crypt_stat->flags |= ECRYPTFS_VIEW_AS_ENCRYPTED; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
597 crypt_stat->flags |= ECRYPTFS_ENCRYPT_FILENAMES; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
600 crypt_stat->flags |= ECRYPTFS_ENCFN_USE_MOUNT_FNEK; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
603 crypt_stat->flags |= ECRYPTFS_ENCFN_USE_FEK; in ecryptfs_copy_mount_wide_flags_to_inode_flags()
608 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_copy_mount_wide_sigs_to_inode_sigs() argument
614 mutex_lock(&crypt_stat->keysig_list_mutex); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
622 rc = ecryptfs_add_keysig(crypt_stat, global_auth_tok->sig); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
631 mutex_unlock(&crypt_stat->keysig_list_mutex); in ecryptfs_copy_mount_wide_sigs_to_inode_sigs()
643 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_set_default_crypt_stat_vals() argument
646 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_set_default_crypt_stat_vals()
648 ecryptfs_set_default_sizes(crypt_stat); in ecryptfs_set_default_crypt_stat_vals()
649 strscpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER); in ecryptfs_set_default_crypt_stat_vals()
650 crypt_stat->key_size = ECRYPTFS_DEFAULT_KEY_BYTES; in ecryptfs_set_default_crypt_stat_vals()
651 crypt_stat->flags &= ~(ECRYPTFS_KEY_VALID); in ecryptfs_set_default_crypt_stat_vals()
652 crypt_stat->file_version = ECRYPTFS_FILE_VERSION; in ecryptfs_set_default_crypt_stat_vals()
653 crypt_stat->mount_crypt_stat = mount_crypt_stat; in ecryptfs_set_default_crypt_stat_vals()
677 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_new_file_context() local
678 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_new_file_context()
684 ecryptfs_set_default_crypt_stat_vals(crypt_stat, mount_crypt_stat); in ecryptfs_new_file_context()
685 crypt_stat->flags |= (ECRYPTFS_ENCRYPTED | ECRYPTFS_KEY_VALID); in ecryptfs_new_file_context()
686 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_new_file_context()
688 rc = ecryptfs_copy_mount_wide_sigs_to_inode_sigs(crypt_stat, in ecryptfs_new_file_context()
695 strscpy(crypt_stat->cipher, in ecryptfs_new_file_context()
697 crypt_stat->key_size = in ecryptfs_new_file_context()
699 ecryptfs_generate_new_key(crypt_stat); in ecryptfs_new_file_context()
700 rc = ecryptfs_init_crypt_ctx(crypt_stat); in ecryptfs_new_file_context()
704 crypt_stat->cipher, rc); in ecryptfs_new_file_context()
750 static void ecryptfs_process_flags(struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_process_flags() argument
759 crypt_stat->flags |= ecryptfs_flag_map[i].local_flag; in ecryptfs_process_flags()
761 crypt_stat->flags &= ~(ecryptfs_flag_map[i].local_flag); in ecryptfs_process_flags()
763 crypt_stat->file_version = ((flags >> 24) & 0xFF); in ecryptfs_process_flags()
787 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_crypt_stat_flags() argument
794 if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag) in ecryptfs_write_crypt_stat_flags()
797 flags |= ((((u8)crypt_stat->file_version) << 24) & 0xFF000000); in ecryptfs_write_crypt_stat_flags()
903 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_header_metadata() argument
909 header_extent_size = (u32)crypt_stat->extent_size; in ecryptfs_write_header_metadata()
911 (u16)(crypt_stat->metadata_size / crypt_stat->extent_size); in ecryptfs_write_header_metadata()
953 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_write_headers_virt() argument
963 ecryptfs_write_crypt_stat_flags((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
966 ecryptfs_write_header_metadata((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
969 rc = ecryptfs_generate_key_packet_set((page_virt + offset), crypt_stat, in ecryptfs_write_headers_virt()
1049 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_write_metadata() local
1050 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_write_metadata()
1057 if (likely(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) { in ecryptfs_write_metadata()
1058 if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) { in ecryptfs_write_metadata()
1069 virt_len = crypt_stat->metadata_size; in ecryptfs_write_metadata()
1079 rc = ecryptfs_write_headers_virt(virt, virt_len, &size, crypt_stat, in ecryptfs_write_metadata()
1086 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_write_metadata()
1105 static int parse_header_metadata(struct ecryptfs_crypt_stat *crypt_stat, in parse_header_metadata() argument
1116 crypt_stat->metadata_size = (((size_t)num_header_extents_at_front in parse_header_metadata()
1120 && (crypt_stat->metadata_size in parse_header_metadata()
1124 crypt_stat->metadata_size); in parse_header_metadata()
1137 static void set_default_header_data(struct ecryptfs_crypt_stat *crypt_stat) in set_default_header_data() argument
1139 crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; in set_default_header_data()
1145 struct ecryptfs_crypt_stat *crypt_stat; in ecryptfs_i_size_init() local
1148 crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; in ecryptfs_i_size_init()
1153 if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) in ecryptfs_i_size_init()
1154 file_size += crypt_stat->metadata_size; in ecryptfs_i_size_init()
1158 crypt_stat->flags |= ECRYPTFS_I_SIZE_INITIALIZED; in ecryptfs_i_size_init()
1174 struct ecryptfs_crypt_stat *crypt_stat, in ecryptfs_read_headers_virt() argument
1182 ecryptfs_set_default_sizes(crypt_stat); in ecryptfs_read_headers_virt()
1183 crypt_stat->mount_crypt_stat = &ecryptfs_superblock_to_private( in ecryptfs_read_headers_virt()
1189 if (!(crypt_stat->flags & ECRYPTFS_I_SIZE_INITIALIZED)) in ecryptfs_read_headers_virt()
1192 ecryptfs_process_flags(crypt_stat, (page_virt + offset), &bytes_read); in ecryptfs_read_headers_virt()
1193 if (crypt_stat->file_version > ECRYPTFS_SUPPORTED_FILE_VERSION) { in ecryptfs_read_headers_virt()
1197 crypt_stat->file_version, in ecryptfs_read_headers_virt()
1203 if (crypt_stat->file_version >= 1) { in ecryptfs_read_headers_virt()
1204 rc = parse_header_metadata(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1212 set_default_header_data(crypt_stat); in ecryptfs_read_headers_virt()
1213 rc = ecryptfs_parse_packet_set(crypt_stat, (page_virt + offset), in ecryptfs_read_headers_virt()
1290 struct ecryptfs_crypt_stat *crypt_stat = in ecryptfs_read_metadata() local
1291 &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; in ecryptfs_read_metadata()
1296 ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat, in ecryptfs_read_metadata()
1304 rc = ecryptfs_read_lower(page_virt, 0, crypt_stat->extent_size, in ecryptfs_read_metadata()
1307 rc = ecryptfs_read_headers_virt(page_virt, crypt_stat, in ecryptfs_read_metadata()
1321 rc = ecryptfs_read_headers_virt(page_virt, crypt_stat, in ecryptfs_read_metadata()
1330 if (crypt_stat->mount_crypt_stat->flags in ecryptfs_read_metadata()
1332 crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; in ecryptfs_read_metadata()