/* Provide a netdb.h header file for systems lacking it (read: MinGW).
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008-2010 Free Software Foundation, Inc.
Written by Simon Josefsson.
This program is free software; you can redistribute it and/or modify
/* Get netdb.h definitions such as struct hostent for MinGW. */
#include <sys/socket.h>
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
/* Declarations for a platform that lacks <netdb.h>, or where it is
incomplete. */
# endif
# if 0
-/* The commented out definitions below are not yet implemented in the
- GNULIB getaddrinfo() replacement, so are not yet needed and may, in fact,
- cause conflicts on systems with a getaddrinfo() function which does not
- define them.
-
- If they are restored, be sure to protect the definitions with #ifndef. */
# define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
-# define AI_V4MAPPED 0x0008 /* IPv4 mapped addresses are acceptable. */
-# define AI_ALL 0x0010 /* Return IPv4 mapped and IPv6 addresses. */
-# define AI_ADDRCONFIG 0x0020 /* Use configuration of this host to choose
- returned address type.. */
-# endif /* 0 */
+# endif
+
+/* These symbolic constants are required to be present by POSIX, but
+ our getaddrinfo replacement doesn't use them (yet). Setting them
+ to 0 on systems that doesn't have them avoids causing problems for
+ system getaddrinfo implementations that would be confused by
+ unknown values. */
+# ifndef AI_V4MAPPED
+# define AI_V4MAPPED 0 /* 0x0008: IPv4 mapped addresses are acceptable. */
+# endif
+# ifndef AI_ALL
+# define AI_ALL 0 /* 0x0010: Return IPv4 mapped and IPv6 addresses. */
+# endif
+# ifndef AI_ADDRCONFIG
+# define AI_ADDRCONFIG 0 /* 0x0020: Use configuration of this host to choose
+ returned address type. */
+# endif
/* Error values for `getaddrinfo' function. */
# ifndef EAI_BADFLAGS
extern int getaddrinfo (const char *restrict nodename,
const char *restrict servname,
const struct addrinfo *restrict hints,
- struct addrinfo **restrict res);
+ struct addrinfo **restrict res)
+ _GL_ARG_NONNULL ((4));
# endif
# if !@HAVE_DECL_FREEADDRINFO@
/* Free `addrinfo' structure AI including associated storage.
For more details, see the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
-extern void freeaddrinfo (struct addrinfo *ai);
+extern void freeaddrinfo (struct addrinfo *ai) _GL_ARG_NONNULL ((1));
# endif
# if !@HAVE_DECL_GAI_STRERROR@
extern int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen,
char *restrict node, socklen_t nodelen,
char *restrict service, socklen_t servicelen,
- int flags);
+ int flags)
+ _GL_ARG_NONNULL ((1));
# endif
/* Possible flags for getnameinfo. */