lookup.subproj/gai_strerror.3

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  19 .\" $FreeBSD: src/lib/libc/net/gai_strerror.3,v 1.5 2006/09/17 21:27:33 ru Exp $
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  21 .Dd May 21, 2006
  22 .Dt GAI_STRERROR 3
  23 .Os
  24 .Sh NAME
  25 .Nm gai_strerror
  26 .Nd get error message string from EAI_xxx error code
  27 .Sh SYNOPSIS
  28 .In sys/types.h
  29 .In sys/socket.h
  30 .In netdb.h
  31 .Ft "const char *"
  32 .Fn gai_strerror "int ecode"
  33 .Sh DESCRIPTION
  34 The
  35 .Fn gai_strerror
  36 function returns an error message string corresponding to the error code
  37 returned by
  38 .Xr getaddrinfo 3
  39 or
  40 .Xr getnameinfo 3 .
  41 .Pp
  42 The following error codes and their meaning are defined in
  43 .In netdb.h :
  44 .Pp
  45 .Bl -tag -width ".Dv EAI_BADFLAGS" -offset indent -compact
  46 .It Dv EAI_AGAIN
  47 temporary failure in name resolution
  48 .It Dv EAI_BADFLAGS
  49 invalid value for
  50 .Fa ai_flags
  51 .It Dv EAI_BADHINTS
  52 invalid value for
  53 .Fa hints
  54 .It Dv EAI_FAIL
  55 non-recoverable failure in name resolution
  56 .It Dv EAI_FAMILY
  57 .Fa ai_family
  58 not supported
  59 .It Dv EAI_MEMORY
  60 memory allocation failure
  61 .It Dv EAI_NONAME
  62 .Fa hostname
  63 or
  64 .Fa servname
  65 not provided, or not known
  66 .It Dv EAI_OVERFLOW
  67 argument buffer overflow
  68 .It Dv EAI_PROTOCOL
  69 resolved protocol is unknown
  70 .It Dv EAI_SERVICE
  71 .Fa servname
  72 not supported for
  73 .Fa ai_socktype
  74 .It Dv EAI_SOCKTYPE
  75 .Fa ai_socktype
  76 not supported
  77 .It Dv EAI_SYSTEM
  78 system error returned in
  79 .Va errno
  80 .El
  81 .Sh RETURN VALUES
  82 The
  83 .Fn gai_strerror
  84 function
  85 returns a pointer to the error message string corresponding to
  86 .Fa ecode .
  87 If
  88 .Fa ecode
  89 is out of range, an implementation-specific error message string is returned.
  90 .Sh SEE ALSO
  91 .Xr getaddrinfo 3 ,
  92 .Xr getnameinfo 3