From e2496982472bdf233be95c5ea72d1c4dc6c91db3 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Sun, 23 Apr 2023 13:43:47 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20230422'. --- src/lib/libc/net/gethostbyname.3 | 271 --------------------------------------- 1 file changed, 271 deletions(-) delete mode 100644 src/lib/libc/net/gethostbyname.3 (limited to 'src/lib/libc/net/gethostbyname.3') diff --git a/src/lib/libc/net/gethostbyname.3 b/src/lib/libc/net/gethostbyname.3 deleted file mode 100644 index 06170c3c1a..0000000000 --- a/src/lib/libc/net/gethostbyname.3 +++ /dev/null @@ -1,271 +0,0 @@ -.\" $OpenBSD: gethostbyname.3,v 1.34 2019/08/30 20:20:50 jmc Exp $ -.\" -.\" Copyright (c) 1983, 1987, 1991, 1993 -.\" The Regents of the University of California. All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND -.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE -.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -.\" SUCH DAMAGE. -.\" -.Dd $Mdocdate: August 30 2019 $ -.Dt GETHOSTBYNAME 3 -.Os -.Sh NAME -.Nm gethostbyname , -.Nm gethostbyname2 , -.Nm gethostbyaddr , -.Nm gethostent , -.Nm sethostent , -.Nm endhostent , -.Nm hstrerror , -.Nm herror -.Nd get network host entry -.Sh SYNOPSIS -.In netdb.h -.Vt extern int h_errno ; -.Ft struct hostent * -.Fn gethostbyname "const char *name" -.Ft struct hostent * -.Fn gethostent void -.Ft void -.Fn sethostent "int stayopen" -.Ft void -.Fn endhostent void -.Ft void -.Fn herror "const char *string" -.Ft const char * -.Fn hstrerror "int err" -.In sys/socket.h -.In netdb.h -.Ft struct hostent * -.Fn gethostbyname2 "const char *name" "int af" -.Ft struct hostent * -.Fn gethostbyaddr "const void *addr" "socklen_t len" "int af" -.Sh DESCRIPTION -The -.Fn gethostbyname , -.Fn gethostbyname2 , -and -.Fn gethostbyaddr -functions each return a pointer to an object with the following structure -describing an Internet host referenced by -.Fa name -or -.Fa addr , -respectively. -This structure contains either information obtained from a name server, -broken-out fields from a line in -.Pa /etc/hosts , -or database entries supplied by the -.Xr yp 8 -system. -.Xr resolv.conf 5 -describes how the particular database is chosen. -.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 returned addresses */ -}; -#define h_addr h_addr_list[0] /* address, for backward compat */ -.Ed -.Pp -The members of this structure are: -.Bl -tag -width h_addr_list -.It Fa h_name -Official name of the host. -.It Fa h_aliases -A -.Dv NULL Ns -terminated -array of alternate names for the host. -.It Fa h_addrtype -The type of address being returned. -.It Fa h_length -The length, in bytes, of the address. -.It Fa h_addr_list -A -.Dv NULL Ns -terminated -array of network addresses for the host. -Host addresses are returned in network byte order. -.It Fa h_addr -The first address in -.Fa h_addr_list ; -this is for backward compatibility. -.El -.Pp -The function -.Fn gethostbyname -will search for the named host in the current domain and its parents -using the search lookup semantics detailed in -.Xr resolv.conf 5 -and -.Xr hostname 7 . -.Pp -.Fn gethostbyname2 -is similar to -.Fn gethostbyname -except that it supports an -.Fa af -of -.Dv AF_INET6 -in addition to -.Dv AF_INET . -.Pp -The -.Fn gethostbyaddr -function will search for the specified address of length -.Fa len -in the address family -.Fa af . -The only address family supported is -.Dv AF_INET . -.Pp -The -.Fn sethostent , -.Fn gethostent , -and -.Fn endhostent -functions are deprecated and no longer have any effect. -They could be used in the past for queries over a persistent TCP -connection or to iterate entries in the -.Xr hosts 5 -file. -.Pp -The -.Fn herror -function prints an error message describing the failure. -If its argument -.Fa string -is not -.Dv NULL , -it is prepended to the message string and separated from it by a colon -.Pq Ql \&: -and a space. -The error message is printed with a trailing newline. -The contents of the error message is the same as that returned by -.Fn hstrerror -with argument -.Va h_errno . -.Sh ENVIRONMENT -.Bl -tag -width RES_OPTIONS -.It Ev RES_OPTIONS -A list of options to override the resolver's internal defaults. -See -.Xr resolv.conf 5 -for more information. -.El -.Sh FILES -.Bl -tag -width /etc/resolv.conf -compact -.It Pa /etc/hosts -.It Pa /etc/resolv.conf -.El -.Sh DIAGNOSTICS -Error return status from -.Fn gethostbyname , -.Fn gethostbyname2 , -and -.Fn gethostbyaddr -is indicated by return of a -.Dv NULL -pointer. -The external integer -.Va h_errno -may then be checked to see whether this is a temporary failure -or an invalid or unknown host. -.Pp -The variable -.Va h_errno -can have the following values: -.Bl -tag -width HOST_NOT_FOUND -.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. -.It Dv NO_DATA -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. -.It Dv NETDB_INTERNAL -An internal error occurred. -This may occur when an address family other than -.Dv AF_INET -or -.Dv AF_INET6 -is specified or when a resource is unable to be allocated. -It is always set by -.Fn gethostent . -.It Dv NETDB_SUCCESS -The function completed successfully. -.El -.Sh SEE ALSO -.Xr getaddrinfo 3 , -.Xr getnameinfo 3 , -.Xr res_init 3 , -.Xr hosts 5 , -.Xr resolv.conf 5 , -.Xr hostname 7 -.Sh HISTORY -The -.Fn endhostent , -.Fn gethostbyaddr , -.Fn gethostbyname , -.Fn gethostent , -and -.Fn sethostent -functions appeared in -.Bx 4.1c . -The function -.Fn herror -was added in -.Bx 4.3 Tahoe , -.Fn hstrerror -in -.Bx 4.4 , -and -.Fn gethostbyname2 -in -.Ox 2.1 . -.Sh BUGS -These functions use static data storage; -if the data is needed for future use, it should be -copied before any subsequent calls overwrite it. -.Pp -Only the Internet -address formats are currently understood. -.Pp -YP does not support any address families other than -.Dv AF_INET -and uses -the traditional database format. -- cgit v1.2.3-55-g6feb