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authorRoland McGrath <roland@hack.frob.com>2013-08-27 10:34:16 -0700
committerRoland McGrath <roland@hack.frob.com>2013-08-27 10:34:16 -0700
commit6fcf28b352c435ee3d1a975619c5ae31923c44eb (patch)
tree9f1dac7b263f957fac5d3641727b8bab1a28e154 /socket
parente041fb8b6557882b6710a655a97bbf3541b56b54 (diff)
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Clean up __libc_sa_len helper.
Diffstat (limited to 'socket')
-rw-r--r--socket/Makefile2
-rw-r--r--socket/sa_len.c108
2 files changed, 109 insertions, 1 deletions
diff --git a/socket/Makefile b/socket/Makefile
index ad9c063..dc8bbde 100644
--- a/socket/Makefile
+++ b/socket/Makefile
@@ -28,6 +28,6 @@ routines := accept bind connect getpeername getsockname getsockopt \
setsockopt shutdown socket socketpair isfdtype opensock \
sockatmark accept4 recvmmsg sendmmsg
-aux := have_sock_cloexec
+aux := have_sock_cloexec sa_len
include ../Rules
diff --git a/socket/sa_len.c b/socket/sa_len.c
new file mode 100644
index 0000000..5cbcf4b
--- /dev/null
+++ b/socket/sa_len.c
@@ -0,0 +1,108 @@
+/* Helper for SA_LEN macro.
+ Copyright (C) 2013 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sys/socket.h>
+
+/* If _HAVE_SA_LEN is defined, then SA_LEN just uses sockaddr.sa_len
+ and there is no need for a helper function. */
+
+#ifndef _HAVE_SA_LEN
+
+/* All configurations have at least these two headers
+ and their associated address families. */
+
+# include <netinet/in.h>
+# include <sys/un.h>
+
+/* More-specific sa_len.c files #define these various HAVE_*_H
+ macros and then #include this file. */
+
+# ifdef HAVE_NETASH_ASH_H
+# include <netash/ash.h>
+# endif
+# ifdef HAVE_NETATALK_AT_H
+# include <netatalk/at.h>
+# endif
+# ifdef HAVE_NETAX25_AX25_H
+# include <netax25/ax25.h>
+# endif
+# ifdef HAVE_NETECONET_EC_H
+# include <neteconet/ec.h>
+# endif
+# ifdef HAVE_NETIPX_IPX_H
+# include <netipx/ipx.h>
+# endif
+# ifdef HAVE_NETPACKET_PACKET_H
+# include <netpacket/packet.h>
+# endif
+# ifdef HAVE_NETROSE_ROSE_H
+# include <netrose/rose.h>
+# endif
+# ifdef HAVE_NETIUCV_IUCV_H
+# include <netiucv/iucv.h>
+# endif
+
+int
+__libc_sa_len (sa_family_t af)
+{
+ switch (af)
+ {
+# ifdef HAVE_NETATALK_AT_H
+ case AF_APPLETALK:
+ return sizeof (struct sockaddr_at);
+# endif
+# ifdef HAVE_NETASH_ASH_H
+ case AF_ASH:
+ return sizeof (struct sockaddr_ash);
+# endif
+# ifdef HAVE_NETAX25_AX25_H
+ case AF_AX25:
+ return sizeof (struct sockaddr_ax25);
+# endif
+# ifdef HAVE_NETECONET_EC_H
+ case AF_ECONET:
+ return sizeof (struct sockaddr_ec);
+# endif
+ case AF_INET:
+ return sizeof (struct sockaddr_in);
+ case AF_INET6:
+ return sizeof (struct sockaddr_in6);
+# ifdef HAVE_NETIPX_IPX_H
+ case AF_IPX:
+ return sizeof (struct sockaddr_ipx);
+# endif
+# ifdef HAVE_NETIUCV_IUCV_H
+ case AF_IUCV:
+ return sizeof (struct sockaddr_iucv);
+# endif
+ case AF_LOCAL:
+ return sizeof (struct sockaddr_un);
+# ifdef HAVE_NETPACKET_PACKET_H
+ case AF_PACKET:
+ return sizeof (struct sockaddr_ll);
+# endif
+# ifdef HAVE_NETROSE_ROSE_H
+ case AF_ROSE:
+ return sizeof (struct sockaddr_rose);
+# endif
+ }
+ return 0;
+}
+libc_hidden_def (__libc_sa_len)
+
+#endif /* Not _HAVE_SA_LEN. */