This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
gai_strerror — address and name information error description
const char *gai_strerror(int ecode);
The gai_strerror() function shall return a text string describing an
error value for the getaddrinfo() and getnameinfo() functions
listed in the <netdb.h> header.
When the ecode argument is one of the following values
listed in the <netdb.h> header:
|[EAI_AGAIN] [EAI_BADFLAGS] [EAI_FAIL] [EAI_FAMILY] [EAI_MEMORY]
||[EAI_NONAME] [EAI_OVERFLOW] [EAI_SERVICE] [EAI_SOCKTYPE] [EAI_SYSTEM]
the function return value shall point to a string describing the
error. If the argument is not one of those values, the function shall return
a pointer to a string whose contents indicate an unknown error.
Upon successful completion, gai_strerror() shall return a pointer to an
No errors are defined.
The following sections are informative.
The Base Definitions volume of POSIX.1‐2017,
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1-2017, Standard for Information Technology -- Portable Operating
System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018
Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html .
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