diff options
Diffstat (limited to 'contrib/bind/doc/man/getipnodebyname.3')
-rw-r--r-- | contrib/bind/doc/man/getipnodebyname.3 | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/contrib/bind/doc/man/getipnodebyname.3 b/contrib/bind/doc/man/getipnodebyname.3 deleted file mode 100644 index 95ca428188b1..000000000000 --- a/contrib/bind/doc/man/getipnodebyname.3 +++ /dev/null @@ -1,227 +0,0 @@ -.\" Copyright (c) 1996,1999 by Internet Software Consortium -.\" -.\" Permission to use, copy, modify, and distribute this software for any -.\" purpose with or without fee is hereby granted, provided that the above -.\" copyright notice and this permission notice appear in all copies. -.\" -.\" THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS -.\" ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES -.\" OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE -.\" CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL -.\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR -.\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS -.\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -.\" SOFTWARE. -.\" -.\" Copyright (c) 1983, 1987 The Regents of the University of California. -.\" All rights reserved. -.\" -.\" Redistribution and use in source and binary forms are permitted provided -.\" that: (1) source distributions retain this entire copyright notice and -.\" comment, and (2) distributions including binaries display the following -.\" acknowledgement: ``This product includes software developed by the -.\" University of California, Berkeley and its contributors'' in the -.\" documentation or other materials provided with the distribution and in -.\" all advertising materials mentioning features or use of this software. -.\" Neither the name of the University nor the names of its contributors may -.\" be used to endorse or promote products derived from this software without -.\" specific prior written permission. -.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED -.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF -.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. -.Dd September 17, 1999 -.Dt GETIPNODEBYNAME @LIB_NETWORK_EXT_U@ -.Os BSD 4 -.Sh NAME -.Nm getipnodebyname , -.Nm getipnodebyaddr -.Nd get network host entry -.br -.Nm freehostent -.Nd free network host entry -.Sh SYNOPSIS -.Fd #include <netdb.h> -.Pp -.Ft struct hostent * -.Fn getipnodebyname "const char *name" "int af" "int flags" "int *error" -.Ft struct hostent * -.Fn getipnodebyaddr "const void *addr" "size_t len" "int af" "int *error" -.Ft void -.Fn freehostent "struct hostent *he" -.Sh DESCRIPTION -.Fn Getipnodebyname , -and -.Fn getipnodebyaddr -each return a pointer to a -.Ft hostent -structure (see below) describing an internet host -referenced by name or by address, as the function names indicate. -This structure contains either the information obtained from the name server, -.Xr @INDOT@named @SYS_OPS_EXT@ , -or broken-out fields from a line in -.Pa /etc/hosts . -If the local name server is not running, these routines do a lookup in -.Pa /etc/hosts . -.Bd -literal -offset indent -struct hostent { - char *h_name; /* official name of host */ - char **h_aliases; /* alias list */ - int h_addrtype; /* host address type */ - int h_length; /* length of address */ - char **h_addr_list; /* list of addresses from name server */ -}; - -#define h_addr h_addr_list[0] /* address, for backward compatibility */ -.Ed -.Pp -The members of this structure are: -.Bl -tag -width "h_addr_list" -.It h_name -Official name of the host. -.It h_aliases -A zero-terminated array of alternate names for the host. -.It h_addrtype -The type of address being returned. -.It h_length -The length, in bytes, of the address. -.It h_addr_list -A zero-terminated array of network addresses for the host. -Host addresses are returned in network byte order. -.It h_addr -The first address in -.Li h_addr_list ; -this is for backward compatibility. -.El -.Pp -This structure should be freed after use by calling -.Fn freehostent . -.Pp -When using the nameserver, -.Fn getiphostbyaddr -will search for the named host in each parent domain given in the -.Dq Li search -directive of -.Xr resolv.conf @FORMAT_EXT@ -unless the name contains a dot -.Pq Dq \&. . -If the name contains no dot, and if the environment variable -.Ev HOSTALIASES -contains the name of an alias file, the alias file will first be searched -for an alias matching the input name. -See -.Xr hostname @DESC_EXT@ -for the domain search procedure and the alias file format. -.Pp -.Fn Getiphostbyaddr -can be told to look for IPv4 addresses, IPv6 addresses or both IPv4 and IPv6. -If IPv4 addresses only are to be looked up then -.Fa af -should be set to -.Dv AF_INET , -otherwise it should be set to -.Dv AF_INET6 . -.Pp -There are three flags that can be set -.Bl -tag -width "AI_ADDRCONFIG" -.It Dv AI_V4MAPPED -Return IPv4 addresses if no IPv6 addresses are found. -This flag is ignored unless -.Fa af -is -.Dv AF_INET6 . -.It Dv AI_ALL -Return IPv4 addresses as well IPv6 addresses if -.Dv AI_V4MAPPED -is set. -This flag is ignored unless -.Fa af -is -.Dv AF_INET6 . -.It Dv AI_ADDRCONFIG -Only return addresses of a given type if the system has an active interface -with that type. -.El -.Pp -Also -.Dv AI_DEFAULT -is defined to be -.Dv (AI_V4MAPPED|AI_ADDRCONFIG) . -.Pp -.Fn Getipnodebyaddr -will lookup IPv4 mapped and compatible addresses in the IPv4 name -space and IPv6 name space -.Pp -.Fn Freehostent -frees the hostent structure allocated be -.Fn getipnodebyname -and -.Fn getipnodebyaddr . -The structures returned by -.Fn gethostbyname , -.Fn gethostbyname2 , -.Fn gethostbyaddr -and -.Fn gethostent -should not be passed to -.Fn freehostent -as they are pointers to static areas. -.Sh ENVIRONMENT -.Bl -tag -width "HOSTALIASES " -compact -.It Ev HOSTALIASES -Name of file containing -.Pq Ar host alias , full hostname -pairs. -.El -.Sh FILES -.Bl -tag -width "HOSTALIASES " -compact -.It Pa /etc/hosts -See -.Xr hosts @FORMAT_EXT@ . -.El -.Sh DIAGNOSTICS -.Pp -Error return status from -.Fn getipnodebyname -and -.Fn getipnodebyaddr -is indicated by return of a null pointer. -In this case -.Ft error -may then be checked to see whether this is a temporary failure -or an invalid or unknown host. -.Ft errno -can have the following values: -.Bl -tag -width "HOST_NOT_FOUND " -offset indent -.It Dv NETDB_INTERNAL -This indicates an internal error in the library, unrelated to the network -or name service. -.Ft errno -will be valid in this case; see -.Xr perror @SYSCALL_EXT@ . -.It Dv HOST_NOT_FOUND -No such host is known. -.It Dv TRY_AGAIN -This is usually a temporary error -and means that the local server did not receive -a response from an authoritative server. -A retry at some later time may succeed. -.It Dv NO_RECOVERY -Some unexpected server failure was encountered. -This is a non-recoverable error, as one might expect. -.It Dv NO_ADDRESS -The requested name is valid but does not have an IP address; -this is not a temporary error. -This means that the name is known to the name server but there is no address -associated with this name. -Another type of request to the name server using this domain name -will result in an answer; -for example, a mail-forwarder may be registered for this domain. -.El -.Sh SEE ALSO -.Xr hosts @FORMAT_EXT@ , -.Xr hostname @DESC_EXT@ , -.Xr @INDOT@named @SYS_OPS_EXT@ , -.Xr resolver @LIB_NETWORK_EXT@ , -.Xr resolver @FORMAT_EXT@ , -.Xr gethostbyname @LIB_NETWORK_EXT@ , -.Xr RFC2553 . |