*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->NetBSD man pages -> hesiod_init (3)              



NAME    [Toc]    [Back]

     hesiod, hesiod_init, hesiod_resolve, hesiod_free_list, hesiod_to_bind,
     hesiod_end - Hesiod name server interface library

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <hesiod.h>

     hesiod_init(void **context);

     **hesiod_resolve(void *context, const char *name, const char *type);

     hesiod_free_list(void *context, char **list);

     *hesiod_to_bind(void *context, const char *name, const char *type);

     hesiod_end(void *context);

DESCRIPTION    [Toc]    [Back]

     This family of functions allows you to perform lookups of Hesiod information,
 which is stored as text records in the Domain Name Service.  To
     perform lookups, you must first initialize a context, an opaque object
     which stores information used internally by the library between calls.
     hesiod_init() initializes a context, storing a pointer to the context in
     the location pointed to by the context argument.  hesiod_end() frees the
     resources used by a context.

     hesiod_resolve() is the primary interface to the library.  If successful,
     it returns a list of one or more strings giving the records matching name
     and type.  The last element of the list is followed by a NULL pointer.
     It is the caller's responsibility to call hesiod_free_list() to free the
     resources used by the returned list.

     hesiod_to_bind() converts name and type into the DNS name used by
     hesiod_resolve().  It is the caller's responsibility to free the returned
     string using free(3).

RETURN VALUES    [Toc]    [Back]

     If successful, hesiod_init() returns 0; otherwise it returns -1 and sets
     errno to indicate the error.  On failure, hesiod_resolve() and
     hesiod_to_bind() return NULL and set the global variable errno to indicate
 the error.

ENVIRONMENT    [Toc]    [Back]

     If the environment variable HES_DOMAIN is set, it will override the
     domain in the Hesiod configuration file.  If the environment variable
     HESIOD_CONFIG is set, it specifies the location of the Hesiod configuration

ERRORS    [Toc]    [Back]

     Hesiod calls may fail because of:
     ENOMEM        Insufficient memory was available to carry out the
                   requested operation.
     ENOEXEC       hesiod_init() failed because the Hesiod configuration file
                   was invalid.
     ECONNREFUSED  hesiod_resolve() failed because no name server could be
                   contacted to answer the query.
     EMSGSIZE      hesiod_resolve() or hesiod_to_bind() failed because the
                   query or response was too big to fit into the packet
     ENOENT        hesiod_resolve() failed because the name server had no text
                   records matching name and type, or hesiod_to_bind() failed
                   because the name argument had a domain extension which
                   could not be resolved with type ``rhs-extension'' in the
                   local Hesiod domain.

SEE ALSO    [Toc]    [Back]

     hesiod.conf(5), named(8)

     Hesiod - Project Athena Technical Plan -- Name Service.

AUTHORS    [Toc]    [Back]

     Steve Dyer, IBM/Project Athena
     Greg Hudson, MIT Team Athena
     Copyright 1987, 1988, 1995, 1996 by the Massachusetts Institute of Technology.

BUGS    [Toc]    [Back]

     The strings corresponding to the errno values set by the Hesiod functions
     are not particularly indicative of what went wrong, especially for

BSD                           September 16, 2001                           BSD
[ Back ]
 Similar pages
Name OS Title
hesiod.conf FreeBSD configuration file for the Hesiod library
tclObjSrv IRIX Tcl-library interface to the object server
hesinfo FreeBSD find out what is stored in the Hesiod database
CGI::Push IRIX Simple Interface to Server Push
cdsclerk HP-UX Manages the interface between clients and the CDS server
apachectl OpenBSD Apache HTTP server control interface
ProclaimServerMgr IRIX graphical interface for proclaim server configuration
xjoin Tru64 Graphical user interface program to configure DHCP server
dgld IRIX Graphics Library server
rpccp_unexport HP-UX Removes binding information, interface identifiers, and object UUIDs from a server entry
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service