Add a few more extra apps from mainline

apps/piano.c

@@ -0,0 +1,75 @@
+/* This file is part of ToaruOS and is released under the terms
+ * of the NCSA / University of Illinois License - see LICENSE.md
+ * Copyright (C) 2014-2018 K. Lange
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+
+int spkr = 0;
+
+struct spkr {
+	int length;
+	int frequency;
+};
+
+void note(int length, int frequency) {
+	struct spkr s = {
+		.length = 2,
+		.frequency = frequency,
+	};
+
+	write(spkr, &s, sizeof(s));
+}
+
+struct termios old;
+
+void set_unbuffered() {
+	tcgetattr(fileno(stdin), &old);
+	struct termios new = old;
+	new.c_lflag &= (~ICANON & ~ECHO);
+	tcsetattr(fileno(stdin), TCSAFLUSH, &new);
+}
+
+
+int main(int argc, char * argv[]) {
+
+	spkr = open("/dev/spkr", O_WRONLY);
+	if (spkr == -1) {
+		fprintf(stderr, "%s: could not open speaker\n", argv[0]);
+		return 1;
+	}
+
+	set_unbuffered();
+
+	char c;
+	while ((c = fgetc(stdin))) {
+		switch (c) {
+			case 'q': return 0;
+			case 'z': return 0;
+			case 'a': note(10, 1308); break;
+			case 'w': note(10, 1386); break;
+			case 's': note(10, 1468); break;
+			case 'e': note(10, 1556); break;
+			case 'd': note(10, 1648); break;
+			case 'f': note(10, 1746); break;
+			case 't': note(10, 1850); break;
+			case 'g': note(10, 1960); break;
+			case 'y': note(10, 2077); break;
+			case 'h': note(10, 2200); break;
+			case 'u': note(10, 2331); break;
+			case 'j': note(10, 2469); break;
+			case 'k': note(10, 2616); break;
+			case 'o': note(10, 2772); break;
+			case 'l': note(10, 2937); break;
+			case 'p': note(10, 3111); break;
+			case ';': note(10, 3296); break;
+			case '\'': note(10, 3492);break;
+		}
+	}
+
+	return 0;
+}
+

apps/serial-console.c

@@ -0,0 +1,148 @@
+/* vim: tabstop=4 shiftwidth=4 noexpandtab
+ * This file is part of ToaruOS and is released under the terms
+ * of the NCSA / University of Illinois License - see LICENSE.md
+ * Copyright (C) 2013-2014 K. Lange
+ *
+ * serial console
+ *
+ * Runs a dumb console on a serial port or something similar.
+ *
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syscall.h>
+#include <signal.h>
+#include <string.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <sys/wait.h>
+
+int fd = 0;
+
+int keep_echo = 0;
+int dos_lines = 0;
+int keep_canon = 0;
+
+struct termios old;
+
+void set_unbuffered() {
+	tcgetattr(fileno(stdin), &old);
+	struct termios new = old;
+	if (!keep_canon) {
+		new.c_lflag &= (~ICANON);
+	}
+	if (!keep_echo) {
+		new.c_lflag &= (~ECHO);
+	}
+	tcsetattr(fileno(stdin), TCSAFLUSH, &new);
+}
+
+void set_buffered() {
+	tcsetattr(fileno(stdin), TCSAFLUSH, &old);
+}
+
+int show_usage(int argc, char * argv[]) {
+	printf(
+			"Serial client.\n"
+			"\n"
+			"usage: %s [-e] [-r] [-c] [device path]\n"
+			"\n"
+			" -e     \033[3mkeep echo enabled\033[0m\n"
+			" -c     \033[3mkeep canon enabled\033[0m\n"
+			" -r     \033[3mtransform line feeds to \\r\\n\033[0m\n"
+			" -?     \033[3mshow this help text\033[0m\n"
+			"\n", argv[0]);
+	return 1;
+}
+
+int main(int argc, char ** argv) {
+
+	int arg = 1;
+	char * device;
+
+	while (arg < argc) {
+		if (argv[arg][0] != '-') break;
+		if (!strcmp(argv[arg], "-e")) {
+			keep_echo = 1;
+		} else if (!strcmp(argv[arg], "-r")) {
+			dos_lines = 1;
+		} else if (!strcmp(argv[arg], "-c")) {
+			keep_canon = 1;
+		} else if (!strcmp(argv[arg], "-?")) {
+			return show_usage(argc, argv);
+		} else {
+			fprintf(stderr, "%s: Unrecognized option: %s\n", argv[0], argv[arg]);
+		}
+		arg++;
+	}
+
+	if (arg == argc) {
+		device = "/dev/ttyS0";
+	} else {
+		device = argv[arg];
+	}
+
+	set_unbuffered();
+
+	fd = open(device, 0, 0);
+
+	int fds[2] = {STDIN_FILENO, fd};
+
+	while (1) {
+		int index = syscall_fswait(2, fds);
+
+		if (index == -1) {
+			fprintf(stderr, "serial-console: fswait: erroneous file descriptor\n");
+			fprintf(stderr, "serial-console: (did you try to open a file that isn't a serial console?\n");
+			return 1;
+		}
+
+		if (index == 0) {
+			char c = fgetc(stdin);
+			if (c == 0x1D) { /* ^] */
+				while (1) {
+					printf("serial-console> ");
+					set_buffered();
+					fflush(stdout);
+
+					char line[1024];
+					fgets(line, 1024, stdin);
+
+					if (feof(stdin)) {
+						return 0;
+					}
+
+					int i = strlen(line);
+					line[i-1] = '\0';
+
+					if (!strcmp(line, "quit")) {
+						return 0;
+					} else if (!strcmp(line, "continue")) {
+						set_unbuffered();
+						fflush(stdout);
+						break;
+					}
+				}
+			} else {
+				if (dos_lines && c == '\n') {
+					char buf[1] = {'\r'};
+					write(fd, buf, 1);
+				}
+				char buf[1] = {c};
+				write(fd, buf, 1);
+			}
+		} else {
+			char buf[1024];
+			size_t r = read(fd, buf, 1024);
+			fwrite(buf, 1, r, stdout);
+			fflush(stdout);
+		}
+	}
+
+	close(fd);
+	set_buffered();
+	return 0;
+}
+

apps/term-size.c

@@ -0,0 +1,14 @@
+/* This file is part of ToaruOS and is released under the terms
+ * of the NCSA / University of Illinois License - see LICENSE.md
+ * Copyright (C) 2013 Kevin Lange
+ */
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+
+int main(int argc, char * argv[]) {
+	struct winsize w;
+	ioctl(0, TIOCGWINSZ, &w);
+	printf("Terminal is %dx%d (%d px x %d px)\n", w.ws_col, w.ws_row, w.ws_xpixel, w.ws_ypixel);
+	return 0;
+}