Squashed 'third_party/lksctp-tools/' content from commit 200eca7f1
Change-Id: I8f7575513f114b205178cac5c6b3706f3d725cb5
git-subtree-dir: third_party/lksctp-tools
git-subtree-split: 200eca7f1419b1ae53958b51e8551f7e7f6cd467
diff --git a/src/withsctp/sctp_load_libs.c b/src/withsctp/sctp_load_libs.c
new file mode 100644
index 0000000..d6a521f
--- /dev/null
+++ b/src/withsctp/sctp_load_libs.c
@@ -0,0 +1,67 @@
+/* Load the real underlying functions for withsctp and related scripts.
+ *
+ * Copyright 2003 La Monte HP Yarroll <piggy@acm.org>
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include "sctp_socket.h"
+
+int (*real_bind)(int sockfd, const struct sockaddr *my_addr, socklen_t addrlen);
+int (*real_socket)(int domain, int type, int protocol);
+int (*real_setsockopt)(int s, int level, int optname, const void *optval,
+ socklen_t optlen);
+static void *lib_handle = NULL;
+
+void
+_sctp_load_libs(void)
+{
+ if (NULL != lib_handle) return; /* Only init once. */
+
+ if (!(lib_handle = dlopen("libc.so", RTLD_LAZY))) {
+ if (!(lib_handle = dlopen("libc.so.6", RTLD_LAZY))) {
+ fprintf(stderr, "error loading libc!\n");
+ exit (1);
+ }
+ }
+
+ if (!(real_socket = dlsym(lib_handle, "socket"))) {
+ fprintf(stderr, "socket() not found in libc!\n");
+ exit (1);
+ }
+
+ if (!(real_bind = dlsym(lib_handle, "bind"))) {
+ fprintf(stderr, "bind() not found in libc!\n");
+ exit (1);
+ }
+
+ if (!(real_setsockopt = dlsym(lib_handle, "setsockopt"))) {
+ fprintf(stderr, "setsockopt() not found in libc!\n");
+ exit (1);
+ }
+}