tests: add create_nl_socket function to libtests

* tests/create_nl_socket.c: New file.
* tests/tests.h (create_nl_socket): New prototype.
* tests/Makefile.am (libtests_a_SOURCES): Add create_nl_socket.c.

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 3f5b7659016e19c70e269b568c118053c569c20e..0490ae58d64d770d289fda01eb58f39fdc2f3efb 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -42,6 +42,7 @@ AM_CPPFLAGS = $(ARCH_MFLAGS) \
 AM_LDFLAGS = $(ARCH_MFLAGS)
 
 libtests_a_SOURCES = \
+       create_nl_socket.c \
        errno2name.c \
        error_msg.c \
        fill_memory.c \

diff --git a/tests/create_nl_socket.c b/tests/create_nl_socket.c
new file mode 100644 (file)
index 0000000..c43669f
--- /dev/null
+++ b/tests/create_nl_socket.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include <string.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+
+int
+create_nl_socket(int proto)
+{
+       struct sockaddr_nl addr;
+       socklen_t len = sizeof(addr);
+       int fd;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.nl_family = AF_NETLINK;
+
+       if ((fd = socket(AF_NETLINK, SOCK_RAW, proto)) == -1)
+               perror_msg_and_skip("socket AF_NETLINK");
+
+       if (bind(fd, (struct sockaddr *) &addr, len))
+               perror_msg_and_skip("bind");
+
+       return fd;
+}

diff --git a/tests/tests.h b/tests/tests.h
index dcc1057654768cce59de6ed7476920933b9f7cc7..fd7f194a25a6769a01ffb0bae6469fe8b6358cff 100644 (file)
--- a/tests/tests.h
+++ b/tests/tests.h
@@ -167,6 +167,9 @@ struct timespec;
 int recv_mmsg(int, struct mmsghdr *, unsigned int, unsigned int, struct timespec *);
 int send_mmsg(int, struct mmsghdr *, unsigned int, unsigned int);
 
+/* Create a netlink socket. */
+int create_nl_socket(int);
+
 /* Create a pipe with maximized descriptor numbers. */
 void pipe_maxfd(int pipefd[2]);