Test availability of AF_UNIX socket familly. It will be used by
sendfd/receivefd.
---
m4/afunix.m4 | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
m4/sockpfaf.m4 | 23 +++++++++++++-
2 files changed, 119 insertions(+), 1 deletions(-)
create mode 100644 m4/afunix.m4
diff --git a/m4/afunix.m4 b/m4/afunix.m4
new file mode 100644
index 0000000..4b8145c
--- /dev/null
+++ b/m4/afunix.m4
@@ -0,0 +1,97 @@
+# atoll.m4 serial 1
+dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_SOCKET_AFUNIX],
+[
+ AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+ AC_REQUIRE([gl_SOCKET_FAMILIES])
+
+ AC_MSG_CHECKING([for UNIX domain sockets SCM_RIGHT])
+ AC_CACHE_VAL([gl_cv_socket_unix_scm_rights],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+]],
+[[struct cmsghdr cmh;
+ cmh.cmsg_level = SOL_SOCKET;
+ cmh.cmsg_type = SCM_RIGHTS;
+ if (&cmh) return 0;]])],
+ gl_cv_socket_unix_scm_rights=yes, gl_cv_socket_unix_scm_rights=no)])
+ AC_MSG_RESULT([$gl_cv_socket_unix_scm_rights])
+ if test $gl_cv_socket_unix_scm_rights = yes; then
+ AC_DEFINE([HAVE_UNIXSOCKET_SCM_RIGHTS], [1], [Define to 1 if
<sys/socket.h> defines SCM_RIGHTS.])
+ fi
+
+ AC_MSG_CHECKING([for UNIX domain sockets SCM_RIGHT behave in BSD4.4 way])
+ AC_CACHE_VAL([gl_cv_socket_unix_scm_rights_bsd44],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+]],
+[[struct msghdr msg = {0};
+ struct cmsghdr *cmsg;
+ int myfds[1] = {0};
+ char buf[CMSG_SPACE(sizeof(myfds))];
+ int *fdptr;
+
+ msg.msg_control = buf;
+ msg.msg_controllen = sizeof buf;
+ cmsg = CMSG_FIRSTHDR(&msg);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+ /* Initialize the payload: */
+ fdptr = (int *) CMSG_DATA(cmsg);
+ *fdptr = myfds[0];
+ /* Sum of the length of all control messages in the buffer: */
+ msg.msg_controllen = cmsg->cmsg_len;
+ return 0;
+]])],
+ gl_cv_socket_unix_scm_rights_bsd44=yes,
gl_cv_socket_unix_scm_rights_bsd44=no)])
+ AC_MSG_RESULT([$gl_cv_socket_unix_scm_rights_bsd44])
+ if test $gl_cv_socket_unix_scm_rights_bsd44 = yes; then
+ AC_DEFINE([HAVE_UNIXSOCKET_SCM_RIGHTS_BSD44], [1], [Define to 1 if fd
could be send/received in the BSD4.4 way.])
+ fi
+
+ AC_MSG_CHECKING([for UNIX domain sockets SCM_RIGHT behave in BSD4.3 way])
+ AC_CACHE_VAL([gl_cv_socket_unix_scm_rights_bsd43],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+]],
+[[struct msghdr msg;
+ int fd = 0;
+ msg.msg_accrights = &fd;
+ msg.msg_accrightslen = sizeof(fd);
+ if (&msg) return 0;]])],
+ gl_cv_socket_unix_scm_rights_bsd43=yes,
gl_cv_socket_unix_scm_rights_bsd43=no)])
+ AC_MSG_RESULT([$gl_cv_socket_unix_scm_rights_bsd43])
+ if test $gl_cv_socket_unix_scm_rights = yes; then
+ AC_DEFINE([HAVE_UNIXSOCKET_SCM_RIGHTS_BSD43], [1], [Define to 1 if fd
could be send/received in the BSD4.3 way.])
+ fi
+])
+
diff --git a/m4/sockpfaf.m4 b/m4/sockpfaf.m4
index 27899aa..b8a64ad 100644
--- a/m4/sockpfaf.m4
+++ b/m4/sockpfaf.m4
@@ -1,4 +1,4 @@
-# sockpfaf.m4 serial 7
+# sockpfaf.m4 serial 8
dnl Copyright (C) 2004, 2006, 2009-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -58,4 +58,25 @@ AC_DEFUN([gl_SOCKET_FAMILIES],
if test $gl_cv_socket_ipv6 = yes; then
AC_DEFINE([HAVE_IPV6], [1], [Define to 1 if <sys/socket.h> defines
AF_INET6.])
fi
+
+ AC_CHECK_HEADERS_ONCE([sys/un.h])
+ AC_MSG_CHECKING([for UNIX domain sockets])
+ AC_CACHE_VAL([gl_cv_socket_unix],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif]],
+[[int x = AF_UNIX; struct sockaddr_un y;
+ if (&x && &y) return 0;]])],
+ gl_cv_socket_unix=yes, gl_cv_socket_unix=no)])
+ AC_MSG_RESULT([$gl_cv_socket_unix])
+ if test $gl_cv_socket_unix = yes; then
+ AC_DEFINE([HAVE_UNIXSOCKET], [1], [Define to 1 if <sys/socket.h> defines
AF_UNIX.])
+ fi
])
--
1.7.2.3
