From b4dbd2cfa724476162fa6d35941a5d7cdc9c9524 Mon Sep 17 00:00:00 2001
From: Tucker Evans <tuckerevans24@gmail.com>
Date: Mon, 18 Feb 2019 08:10:10 -0500
Subject: Adds all assignments not previously in a git repo

---
 CS3871/os/copy.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 CS3871/os/copy.c

(limited to 'CS3871/os/copy.c')

diff --git a/CS3871/os/copy.c b/CS3871/os/copy.c
new file mode 100644
index 0000000..6e21083
--- /dev/null
+++ b/CS3871/os/copy.c
@@ -0,0 +1,95 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdlib.h>
+
+int main(argc, argv)
+int argc;
+char ** argv;
+{
+	int val;
+	char buf[512], *dev;
+	int file, floppy;
+
+	if (argc < 3 ) {
+		perror("usage: copy path_to_bootloader path_to_os [path_to_device]\n");
+		exit(1);
+	}
+	if (argc >= 4) {
+		dev = argv[3];
+	} else {
+		dev = "/dev/fd0";
+	}
+
+	memset(buf, 0, 512);
+
+	floppy = open(dev, O_RDWR);
+	if (file < 0) {
+		perror("Could not open floppy: ");
+		exit(1);
+	}
+
+	/******************************
+	 * Write Bootloader to Floppy *
+	 ******************************/
+
+	file = open(argv[1], O_RDONLY);
+	if (file < 0) {
+		perror("Could not open bootloader: ");
+		exit(1);
+	}
+
+	val = read(file, buf, 510);
+	close(file);
+	if (val < 0) {
+		perror("Could not read bootloader: ");
+		exit(1);
+	}
+
+	buf[510] = 0x55;
+	buf[511] = 0xaa;
+
+	lseek(floppy, 0, SEEK_CUR);
+
+	val = write(floppy, buf, 512);
+	if (val < 0) {
+		perror("Error writing to floppy: ");
+		close(floppy);
+		exit(1);
+	}
+	
+
+	/**********************
+ 	 * Write OS to Floppy *
+	 **********************/
+
+	file = open(argv[2], O_RDONLY);
+	if (file < 0) {
+		perror("Could not open os: ");
+		exit(1);
+	}
+
+	val = read(file, buf, 512);
+	close(file);
+	if (val < 0) {
+		perror("Could not read os: ");
+		exit(1);
+	}
+
+	val = write(floppy, buf, 512);
+	if (val < 0) {
+		perror("Error writing to floppy: ");
+		close(floppy);
+		exit(1);
+	}
+
+	syncfs(floppy);
+	close(floppy);
+
+	printf("Floppy successfully copied!\n");
+	return 0;
+}
-- 
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