| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SYSROOT_ZIRCON_LOOKUP_H_ |
| #define SYSROOT_ZIRCON_LOOKUP_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <zircon/compiler.h> |
| |
| __BEGIN_CDECLS |
| |
| struct address { |
| int family; |
| unsigned scopeid; |
| uint8_t addr[16]; |
| int sortkey; |
| }; |
| |
| /* The limit of 48 results is a non-sharp bound on the number of addresses |
| * that can fit in one 512-byte DNS packet full of v4 results and a second |
| * packet full of v6 results. Due to headers, the actual limit is lower. */ |
| #define MAXADDRS 48 |
| |
| // This function is used by musl to perform an actual DNS lookup - it takes |
| // a name and address family, sends a DNS query, and fills out the addresses |
| // and canonical name with the response. |
| int _getaddrinfo_from_dns(struct address buf[MAXADDRS], char canon[256], const char* name, |
| int family); |
| |
| __END_CDECLS |
| |
| #endif // SYSROOT_ZIRCON_LOOKUP_H_ |
