Source

linux-scalability-benchmarks / libowfat / dns / dns_name6.3

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.TH dns_name6 3
.SH NAME
dns_name6 \- look up host name
.SH SYNTAX
.B #include <dns.h>

int \fBdns_name6\fP(stralloc* \fIout\fR,const char* \fIip\fR[16]);
.SH DESCRIPTION
dns_name6 looks up the domain name for the 16-byte IPv6 address in \fIip\fR. It
puts the (first) domain name into \fIout\fR and returns 0. If the relevant
ip6.arpa domain does not exist in DNS, or has no PTR records, \fIout\fR
will be empty.

If dns_name6 has trouble with the DNS lookup or runs out of memory, it returns
-1, setting errno appropriately. It may or may not change \fIout\fR.
.SH "SEE ALSO"
dns_name_packet(3), dns_name6_domain(3), dns_name4(3), dns_ip6(3)