181 bool hashtree_info::ecc_read_hashes(fec_handle *f, uint64_t hash_offset,  in ecc_read_hashes()  argument
184     check(f);  in ecc_read_hashes()
187         fec_pread(f, hash, digest_length_, hash_offset) != digest_length_) {  in ecc_read_hashes()
195     if (fec_pread(f, data, FEC_BLOCKSIZE, data_offset) != FEC_BLOCKSIZE) {  in ecc_read_hashes()
204 int hashtree_info::verify_tree(const fec_handle *f, const uint8_t *root) {  in verify_tree()  argument
205     check(f);  in verify_tree()
217     check(hash_start + hash_size <= f->data_size);  in verify_tree()
223     if (!raw_pread(f->fd, data, FEC_BLOCKSIZE, hash_offset) ||  in verify_tree()
226         if (!ecc_read_hashes(const_cast<fec_handle *>(f), 0, nullptr,  in verify_tree()
231         } else if (f->mode & O_RDWR &&  in verify_tree()
232                    !raw_pwrite(f->fd, data, FEC_BLOCKSIZE, hash_offset)) {  in verify_tree()
264     check(hash_data_offset < f->data_size);  in verify_tree()
265     check(hash_data_offset + hash_data_blocks * FEC_BLOCKSIZE <= f->data_size);  in verify_tree()
281             if (!raw_pread(f->fd, buffer.data(), padded_digest_length_,  in verify_tree()
283                 !raw_pread(f->fd, data, FEC_BLOCKSIZE,  in verify_tree()
291                 if (!ecc_read_hashes(const_cast<fec_handle *>(f),  in verify_tree()
305                 if (f->mode & O_RDWR) {  in verify_tree()
306                     if (!raw_pwrite(f->fd, buffer.data(), padded_digest_length_,  in verify_tree()
308                         !raw_pwrite(f->fd, data, FEC_BLOCKSIZE,  in verify_tree()
342 static int parse_table(fec_handle *f, uint64_t offset, uint32_t size, bool useecc)  in parse_table()  argument
344     check(f);  in parse_table()
353         if (!raw_pread(f->fd, const_cast<char *>(table.data()), size, offset)) {  in parse_table()
357     } else if (fec_pread(f, const_cast<char *>(table.data()), size, offset) !=  in parse_table()
390             if (parse_uint64(token.c_str(), f->data_size / FEC_BLOCKSIZE,  in parse_table()
398             if (parse_uint64(token.c_str(), f->data_size / FEC_BLOCKSIZE,  in parse_table()
443     check(hash_start < f->data_size);  in parse_table()
445     verity_info *v = &f->verity;  in parse_table()
455     if (!(f->flags & FEC_VERITY_DISABLE)) {  in parse_table()
456         if (v->hashtree.verify_tree(f, root) == -1) {  in parse_table()
468 static int rewrite_metadata(fec_handle *f, uint64_t offset)  in rewrite_metadata()  argument
470     check(f);  in rewrite_metadata()
471     check(f->data_size > VERITY_METADATA_SIZE);  in rewrite_metadata()
472     check(offset <= f->data_size - VERITY_METADATA_SIZE);  in rewrite_metadata()
484     verity_info *v = &f->verity;  in rewrite_metadata()
493     return raw_pwrite(f->fd, metadata.get(), VERITY_METADATA_SIZE, offset);  in rewrite_metadata()
496 static int validate_header(const fec_handle *f, const verity_header *header,  in validate_header()  argument
499     check(f);  in validate_header()
527     } else if (offset + header->length >= f->data_size) {  in validate_header()
537 int verity_parse_header(fec_handle *f, uint64_t offset)  in verity_parse_header()  argument
539     check(f);  in verity_parse_header()
540     check(f->data_size > VERITY_METADATA_SIZE);  in verity_parse_header()
542     if (offset > f->data_size - VERITY_METADATA_SIZE) {  in verity_parse_header()
548     verity_info *v = &f->verity;  in verity_parse_header()
549     uint64_t errors = f->errors;  in verity_parse_header()
551     if (!raw_pread(f->fd, &v->header, sizeof(v->header), offset)) {  in verity_parse_header()
564     if (fec_pread(f, &v->ecc_header, sizeof(v->ecc_header), offset) !=  in verity_parse_header()
570     if (validate_header(f, &v->header, offset)) {  in verity_parse_header()
574         if (validate_header(f, &v->ecc_header, offset)) {  in verity_parse_header()
604     if (parse_table(f, offset + sizeof(v->header), v->header.length,  in verity_parse_header()
606         parse_table(f, offset + sizeof(v->header), v->header.length,  in verity_parse_header()
613     if (f->mode & O_RDWR && f->errors > errors &&  in verity_parse_header()
614             rewrite_metadata(f, offset) < 0) {  in verity_parse_header()
619         f->data_size = v->metadata_start;  in verity_parse_header()
621         f->data_size = v->hashtree.hash_start;  in verity_parse_header()
627 int fec_verity_set_status(struct fec_handle *f, bool enabled)  in fec_verity_set_status()  argument
629     check(f);  in fec_verity_set_status()
631     if (!(f->mode & O_RDWR)) {  in fec_verity_set_status()
637     verity_info *v = &f->verity;  in fec_verity_set_status()
651     if (!raw_pwrite(f->fd, &magic, sizeof(magic), v->metadata_start)) {  in fec_verity_set_status()