static int nbd_send_rep_list(int csock, NBDExport *exp) { uint64_t magic, name_len; uint32_t opt, type, len; name_len = strlen(exp->name); magic = cpu_to_be64(NBD_REP_MAGIC); if (write_sync(csock, &magic, sizeof(magic)) != sizeof(magic)) { LOG("write failed (magic)"); return -EINVAL; } opt = cpu_to_be32(NBD_OPT_LIST); if (write_sync(csock, &opt, sizeof(opt)) != sizeof(opt)) { LOG("write failed (opt)"); return -EINVAL; } type = cpu_to_be32(NBD_REP_SERVER); if (write_sync(csock, &type, sizeof(type)) != sizeof(type)) { LOG("write failed (reply type)"); return -EINVAL; } len = cpu_to_be32(name_len + sizeof(len)); if (write_sync(csock, &len, sizeof(len)) != sizeof(len)) { LOG("write failed (length)"); return -EINVAL; } len = cpu_to_be32(name_len); if (write_sync(csock, &len, sizeof(len)) != sizeof(len)) { LOG("write failed (length)"); return -EINVAL; } if (write_sync(csock, exp->name, name_len) != name_len) { LOG("write failed (buffer)"); return -EINVAL; } return 0; }