dn_skipname() — Resolver domain name skipping

Standards

Standards / Extensions	C or C++	Dependencies
BSD 4.3	both	OS/390® V2R8

Format

#define _XOPEN_SOURCE_EXTENDED 1
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>

int dn_skipname(const u_char *comp_dn, u_char *eom);

General description

The dn_skipname() function skips the compressed domain name comp_dn and returns the position in the answer buffer that follows the comp_dn compressed domain name. If the information supplied in comp_dn is not a compressed domain name, -1 is returned to report the error.

Note: The dn_skipname() function has a dependency on the level of the Enhanced ASCII Extensions. See Enhanced ASCII support for details.

Returned value

If successful, dn_skipname() returns the position in the answer buffer that follows the comp_dn compressed domain name.

If unsuccessful, dn_skipname() returns -1 to report the error, when the name to be skipped was not found before the end of the buffer was reached.

There are no documented errno values.