lib: add safe_setsockopt/send/sendto functions

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
diff --git a/lib/safe_net.c b/lib/safe_net.c
index 2c929ad..e48b06d 100644
--- a/lib/safe_net.c
+++ b/lib/safe_net.c
@@ -97,6 +97,58 @@
 	return rval;
 }
 
+int safe_setsockopt(const char *file, const int lineno, int sockfd, int level,
+		    int optname, const void *optval, socklen_t optlen)
+{
+	int rval;
+
+	rval = setsockopt(sockfd, level, optname, optval, optlen);
+
+	if (rval) {
+		tst_brkm(TBROK | TERRNO, NULL,
+			 "%s:%d: setsockopt(%d, %d, %d, %p, %d) failed",
+			 file, lineno, sockfd, level, optname, optval, optlen);
+	}
+
+	return rval;
+}
+
+ssize_t safe_send(const char *file, const int lineno, char len_strict,
+		  int sockfd, const void *buf, size_t len, int flags)
+{
+	ssize_t rval;
+
+	rval = send(sockfd, buf, len, flags);
+
+	if (rval == -1 || (len_strict && (size_t)rval != len)) {
+		tst_brkm(TBROK | TERRNO, NULL,
+			 "%s:%d: send(%d, %p, %zu, %d) failed",
+			 file, lineno, sockfd, buf, len, flags);
+	}
+
+	return rval;
+}
+
+ssize_t safe_sendto(const char *file, const int lineno, char len_strict,
+		    int sockfd, const void *buf, size_t len, int flags,
+		    const struct sockaddr *dest_addr, socklen_t addrlen)
+{
+	ssize_t rval;
+	char res[128];
+
+	rval = sendto(sockfd, buf, len, flags, dest_addr, addrlen);
+
+	if (rval == -1 || (len_strict && (size_t)rval != len)) {
+		tst_brkm(TBROK | TERRNO, NULL,
+			 "%s:%d: sendto(%d, %p, %zu, %d, %s, %d) failed",
+			 file, lineno, sockfd, buf, len, flags,
+			 tst_sock_addr(dest_addr, addrlen, res, sizeof(res)),
+			 addrlen);
+	}
+
+	return rval;
+}
+
 int safe_bind(const char *file, const int lineno, void (cleanup_fn)(void),
 	      int socket, const struct sockaddr *address,
 	      socklen_t address_len)