add missing file

newlib/examples/rlogind.c

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2011 Stefan Lankes
+ *                     Chair for Operating Systems, RWTH Aachen University
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#undef errno
+extern int errno;
+
+#define PORT	4211
+
+int main(int argc, char* argv[])
+{
+	int sockd, sockd2;
+	unsigned int addrlen;
+	struct sockaddr_in my_name, peer_name;
+	int status;
+	int cmd, i=0;
+	pid_t pid;
+
+	/* create a socket */
+	sockd = socket(AF_INET, SOCK_STREAM, 0);
+	if (sockd == -1)
+	{
+		perror("Socket creation error");
+		exit(1);
+	}
+
+	memset(&my_name, 0x00, sizeof(my_name));
+	/* server address  */
+	my_name.sin_family = AF_INET;
+	my_name.sin_addr.s_addr = INADDR_ANY;
+	my_name.sin_port = htons(PORT);
+
+	status = bind(sockd, (struct sockaddr*)&my_name, sizeof(my_name));
+	if (status == -1)
+	{
+		perror("Binding error");
+		exit(1);
+	}
+
+	status = listen(sockd, 5);
+	if (status == -1)
+	{
+		perror("Listening error");
+		exit(1);
+	}
+
+	while(1)
+	{
+		/* wait for a connection */
+		addrlen = sizeof(peer_name);
+		sockd2 = accept(sockd, (struct sockaddr*)&peer_name, &addrlen);
+		if (sockd2 == -1)
+		{
+			perror("Wrong connection");
+			exit(1);
+		}
+
+		pid = fork();
+		if (pid == 0) { // child
+			char* newargs[] = {"/bin/mshell", NULL};
+			char* newenv[] = {"USER=root", "PATH=/bin:/sbin:/usr/bin", "PWD=/", "TEMP=/tmp", NULL};
+
+			// set stdout, stdin and stderr to the socket descriptor
+			close(STDIN_FILENO);
+			dup(sockd2);
+			close(STDOUT_FILENO);
+			dup(sockd2);
+			close(STDERR_FILENO);
+			dup(sockd2);
+
+			execve("/bin/mshell", newargs, newenv);
+			return errno;
+		}
+
+		printf("Create mshell with pid %u\n", pid);
+		//close(sockd2);
+	}
+
+	return 0;
+}