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Author: veltzer

src/examples/error_handling/errno.cc

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+/*
+ * This file is part of the demos-os-linux package.
+ * Copyright (C) 2011-2025 Mark Veltzer <[email protected]>
+ *
+ * demos-os-linux is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * demos-os-linux 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with demos-os-linux. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <firstinclude.h>
+#include <err_utils.h>	// for CHECK_NOT_M1()
+#include <sys/socket.h>	// for socket(2)
+#include <arpa/inet.h>
+#include <stdio.h>
+
+/*
+ * This is a tcp client demo.
+ */
+
+int main() {
+	int fd=CHECK_NOT_M1(socket(AF_PACKET, SOCK_RAW, htons(0x88B5)));
+	printf("fd is %d\n", fd);
+	return EXIT_SUCCESS;
+}