88 lines
2.4 KiB
Groff
88 lines
2.4 KiB
Groff
.\" $KAME: gai_strerror.3,v 1.1 2005/01/05 03:04:47 itojun Exp $
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.\" $OpenBSD: gai_strerror.3,v 1.4 2004/12/20 23:04:53 millert Exp $
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.\" $FreeBSD$
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.\"
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.\" Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
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.\" Copyright (C) 2000, 2001 Internet Software Consortium.
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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.\" REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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.\" AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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.\" INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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.\" LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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.\" OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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.\" PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd December 20, 2004
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.Dt GAI_STRERROR 3
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.Os
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.Sh NAME
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.Nm gai_strerror
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.Nd get error message string from EAI_xxx error code
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.Sh SYNOPSIS
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.Fd #include <sys/types.h>
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.Fd #include <sys/socket.h>
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.Fd #include <netdb.h>
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.Ft "const char *"
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.Fn gai_strerror "int ecode"
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.Sh DESCRIPTION
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The
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.Fn gai_strerror
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function returns an error message string corresponding to the error code
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returned by
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.Xr getaddrinfo 3
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or
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.Xr getnameinfo 3 .
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.Pp
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The following error codes and their meaning are defined in
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.Aq Pa netdb.h :
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.Pp
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.Bl -tag -width "EAI_ADDRFAMILYXX" -offset indent -compact
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.It Dv EAI_AGAIN
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temporary failure in name resolution
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.It Dv EAI_BADFLAGS
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invalid value for
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.Fa ai_flags
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.It Dv EAI_BADHINTS
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invalid value for
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.Fa hints
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.It Dv EAI_FAIL
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non-recoverable failure in name resolution
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.It Dv EAI_FAMILY
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.Fa ai_family
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not supported.
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.It Dv EAI_MEMORY
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memory allocation failure
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.It Dv EAI_NONAME
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.Fa hostname
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or
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.Fa servname
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not provided, or not known
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.It Dv EAI_PROTOCOL
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resolved protocol is unknown
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.It Dv EAI_SERVICE
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.Fa servname
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not supported for
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.Fa ai_socktype
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.It Dv EAI_SOCKTYPE
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.Fa ai_socktype
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not supported
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.It Dv EAI_SYSTEM
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system error returned in
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.Va errno
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.El
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.Sh RETURN VALUES
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.Fn gai_strerror
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returns a pointer to the error message string corresponding to
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.Fa ecode .
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If
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.Fa ecode
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is out of range, an implementation-specific error message string is returned.
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.Sh SEE ALSO
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.Xr getaddrinfo 3 ,
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.Xr getnameinfo 3
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