Lab6

Lab6/agent.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+	/*
+	On startup, the agent program creates the file
+/var/run/agent.pid and writes its PID into the file. It then reads
+the contents of a file called text.txt, prints it on the console and
+finally sleeps indefinitely
+	*/
+	FILE *file = fopen("text.txt", "w");
+    FILE *filePid = fopen("agent.txt", "w");
+    fputc(getpid(), filePid);
+    fclose(filePid);
+    fclose(file);
+    char pid_str[10];
+    fgets(pid_str, sizeof(pid_str), file);
+    fclose(file);
+
+    FILE *text_file = fopen("text.txt", "r");
+    if (text_file == NULL) {
+        printf("Error opening text.txt\n");
+        return 1;
+    }
+
+    char c;
+    while ((c = fgetc(text_file))!= EOF)
+        printf("%c", c);
+
+    fclose(text_file);
+
+    printf("\nSleeping indefinitely...\n");
+    while (1)
+        sleep(1);
+	return 0;
+}