1 .\" $KAME: gai_strerror.3,v 1.1 2005/01/05 03:04:47 itojun Exp $
2 .\" $OpenBSD: gai_strerror.3,v 1.4 2004/12/20 23:04:53 millert Exp $
4 .\" Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
5 .\" Copyright (C) 2000, 2001 Internet Software Consortium.
7 .\" Permission to use, copy, modify, and distribute this software for any
8 .\" purpose with or without fee is hereby granted, provided that the above
9 .\" copyright notice and this permission notice appear in all copies.
11 .\" THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 .\" REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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14 .\" INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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24 .Nd get error message string from EAI_xxx error code
30 .Fn gai_strerror "int ecode"
34 function returns an error message string corresponding to the error code
40 The following error codes and their meaning are defined in
43 .Bl -tag -width ".Dv EAI_ADDRFAMILY" -offset indent -compact
45 Address family for hostname not supported
47 Name could not be resolved at this time
49 flags parameter had an invalid value
54 Non-recoverable failure in name resolution
56 Address family was not recognized
58 Memory allocation failure
60 No address associated with hostname
64 argument buffer overflow
66 Resolved protocol is unknown
68 Service was not recognized for socket type
70 Intended socket type was not recognized
72 System error returned in
79 returns a pointer to the error message string corresponding to
83 is out of range, an implementation-specific error message string is returned.
88 .Bl -tag -width ".It RFC 3493"
90 Basic Socket Interface Extensions for IPv6
93 EAI_ADDRFAMILY and EAI_NODATA were in previous RFCs, but not in RFC 3493.
94 They are not in POSIX (IEEE Std 1003.1-2017).
97 before 5.2, and were re-added for 14.0.
98 EAI_BADHINTS, EAI_OVERFLOW, and EAI_PROTOCOL are not in RFC 3493 or POSIX.