modified some syscall code in rlibc, fs stuff

kernel/initrd.c

@@ -0,0 +1,34 @@
+#include "initrd.h"
+
+#include <stdint.h>
+
+#include <lib/print.h>
+#include <lib/memory.h>
+
+void parse_cpio(void *initrd_start) {
+    cpio_header_t *head = (cpio_header_t *)initrd_start;
+
+    while (strncmp(head->c_magic, "070701", 6) == 0) {
+        // If we hit the trailer, we are done
+        char *filename = (char *)(head + 1); 
+        if (strncmp(filename, "TRAILER!!!", 10) == 0) {
+            break; 
+        }
+
+        uint32_t filesize = parse_hex(head->c_filesize);
+        uint32_t namesize = parse_hex(head->c_namesize);
+        
+        kprintf("found file of size %d\n", filesize);
+
+        // Calculate where the data begins (accounting for 4-byte padding)
+        uint32_t header_plus_name = 110 + namesize;
+        header_plus_name = (header_plus_name + 3) & ~3; // Align to 4 bytes
+        
+        char *file_data = (char *)head + header_plus_name;
+
+        uint32_t total_record_size = header_plus_name + filesize;
+        total_record_size = (total_record_size + 3) & ~3; // Align to 4 bytes
+        
+        head = (cpio_header_t *)((char *)head + total_record_size);
+    }
+}