The Open Group Base Specifications Issue 6
IEEE Std 1003.1, 2003 Edition
Copyright © 2001-2003 The IEEE and The Open Group, All Rights reserved.

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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