The Open Group Base Specifications Issue 6
IEEE Std 1003.1, 2004 Edition
Copyright © 2001-2004 The IEEE and The Open Group, All Rights reserved.
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NAME

gai_strerror - address and name information error description

SYNOPSIS

#include <netdb.h>

const char *gai_strerror(int ecode);

DESCRIPTION

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.

RETURN VALUE

Upon successful completion, gai_strerror() shall return a pointer to an implementation-defined string.

ERRORS

No errors are defined.

The following sections are informative.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

getaddrinfo(), the Base Definitions volume of IEEE Std 1003.1-2001, <netdb.h>

CHANGE HISTORY

First released in Issue 6. Derived from the XNS, Issue 5.2 specification.

The Open Group Base Resolution bwg2001-009 is applied, which changes the return type from char * to const char *. This is for coordination with the IPnG Working Group.

IEEE Std 1003.1-2001/Cor 1-2002, item XSH/TC1/D6/22 is applied, adding the [EAI_OVERFLOW] error code.

End of informative text.
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