Kernel: Userspace sets the foreground process and Shell handles ^C

userspace/Shell/main.cpp

@@ -380,10 +380,16 @@ int execute_command(BAN::Vector<BAN::String>& args)
 		if (pid == -1)
 			ERROR_RETURN("fork", 1);
 
+		if (tcsetpgrp(0, pid) == -1)
+			ERROR_RETURN("tcsetpgrp", 1);
+
 		int status;
 		if (waitpid(pid, &status, 0) == -1)
 			ERROR_RETURN("waitpid", 1);
 
+		if (tcsetpgrp(0, getpid()) == -1)
+			ERROR_RETURN("tcsetpgrp", 1);
+
 		return status;
 	}
 
@@ -489,6 +495,9 @@ int main(int argc, char** argv)
 {
 	argv0 = argv[0];
 
+	if (signal(SIGINT, [](int) {}) == SIG_ERR)
+		perror("signal");
+
 	if (argc >= 2)
 	{
 		if (strcmp(argv[1], "-c") == 0)
@@ -599,6 +608,12 @@ int main(int argc, char** argv)
 				fflush(stdout);
 			}
 			break;
+		case '\x03': // ^C
+			fputc('\n', stdout);
+			print_prompt();
+			buffers[index].clear();
+			col = 0;
+			break;
 		case '\n':
 			fputc('\n', stdout);
 			if (!buffers[index].empty())

userspace/init/main.cpp

@@ -22,6 +22,9 @@ int main()
 {
 	initialize_stdio();
 
+	if (signal(SIGINT, [](int) {}) == SIG_ERR)
+		perror("signal");
+
 	bool first = true;
 
 	while (true)
@@ -86,8 +89,14 @@ int main()
 			break;
 		}
 
+		if (tcsetpgrp(0, pid) == -1)
+			perror("tcsetpgrp");
+
 		int status;
 		waitpid(pid, &status, 0);
+
+		if (tcsetpgrp(0, getpid()) == -1)
+			perror("tcsetpgrp");
 	}
 
 }