On 3 Sep 2015, at 22:11, Takae Harrington <thar...@us.ibm.com> wrote:
> When I compile postfix3.0.2 (the same issue has existed since 2.11.x) on
> aix61 and aix71, I get this error:
>
> [vq2ua613:/staging/Postfix-3.0.2]make
> dns_lookup.c: In function 'dns_query':
> dns_lookup.c:339: error: 'HEADER' has no member named 'ad'
It looks like the system #include files are broken or out of date. A HEADER
typedef struct is usually defined in <arpa/nameser_compat.h> which lays out the
headers found in a DNS query. This should include a field "unsigned ad: 1;" for
the AD (Authentic Data) bit which is used in Secure DNS. This 1-bit field
appears to be missing from your include files. It shouldn't.
The AD bit has been part of the DNS protocol since 2005 and is defined in
RFC4033.
Here's what you should see in that struct definition:
typedef struct {
unsigned id :16; /* query identification number */
#if BYTE_ORDER == BIG_ENDIAN
/* fields in third byte */
unsigned qr: 1; /* response flag */
unsigned opcode: 4; /* purpose of message */
unsigned aa: 1; /* authoritive answer */
unsigned tc: 1; /* truncated message */
unsigned rd: 1; /* recursion desired */
/* fields in fourth byte */
unsigned ra: 1; /* recursion available */
unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
unsigned ad: 1; /* authentic data from named */
unsigned cd: 1; /* checking disabled by resolver */
unsigned rcode :4; /* response code */
#endif
#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
/* fields in third byte */
unsigned rd :1; /* recursion desired */
unsigned tc :1; /* truncated message */
unsigned aa :1; /* authoritive answer */
unsigned opcode :4; /* purpose of message */
unsigned qr :1; /* response flag */
/* fields in fourth byte */
unsigned rcode :4; /* response code */
unsigned cd: 1; /* checking disabled by resolver */
unsigned ad: 1; /* authentic data from named */
unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
unsigned ra :1; /* recursion available */
#endif
/* remaining bytes */
unsigned qdcount :16; /* number of question entries */
unsigned ancount :16; /* number of answer entries */
unsigned nscount :16; /* number of authority entries */
unsigned arcount :16; /* number of resource entries */
} HEADER;
