file system

#include “filesys/inode.h” #include #include #include #include #include “filesys/filesys.h” #include “filesys/free-map.h” #include “threads/malloc.h” /* Identifies an inode. */ #define INODE_MAGIC 0x494e4f44 /* On-disk inode. Must be exactly BLOCK_SECTOR_SIZE bytes long. */ struct inode_disk { block_sector_t start; /* First data sector. */ off_t length; /* File size in bytes. */ unsigned magic; /* Magic number. */ uint32_t […]

/* Deletes and closes file that is mapped into memory and verifies that it can still be read through the mapping. */ #include #include #include “tests/vm/sample.inc” #include “tests/lib.h” #include “tests/main.h” void test_main (void) { char *actual = (char *) 0x10000000; int handle; mapid_t map; size_t i; /* Map file. */ CHECK ((handle = open (“sample.txt”))

#include “filesys/fsutil.h” #include #include #include #include #include #include “filesys/directory.h” #include “filesys/file.h” #include “filesys/filesys.h” #include “threads/malloc.h” #include “threads/palloc.h” #include “threads/vaddr.h” /* List files in the root directory. */ void fsutil_ls (char **argv UNUSED) { struct dir *dir; char name[NAME_MAX + 1]; printf (“Files in the root directory:\n”); dir = dir_open_root (); if (dir == NULL) PANIC

# Percentage of the testing point total designated for each set of # tests. # This project is primarily about implementing the file system, but # all the previous functionality should work too. It’s not too easy # to screw it up, thus the emphasis. # 65% for extended file system features. 30% tests/filesys/extended/Rubric.functionality 15%

#ifndef FILESYS_FILESYS_H #define FILESYS_FILESYS_H #include #include “filesys/off_t.h” /* Sectors of system file inodes. */ #define FREE_MAP_SECTOR 0 /* Free map file inode sector. */ #define ROOT_DIR_SECTOR 1 /* Root directory file inode sector. */ /* Block device that contains the file system. */ struct block *fs_device; void filesys_init (bool format); void filesys_done (void); bool filesys_create

#ifndef DEVICES_BLOCK_H #define DEVICES_BLOCK_H #include #include /* Size of a block device sector in bytes. All IDE disks use this sector size, as do most USB and SCSI disks. It’s not worth it to try to cater to other sector sizes in Pintos (yet). */ #define BLOCK_SECTOR_SIZE 512 /* Index of a block device sector.

# Percentage of the testing point total designated for each set of # tests. # This project is primarily about implementing the file system, but # all the previous functionality should work too. It’s not too easy # to screw it up, thus the emphasis. # 65% for extended file system features. 30% tests/filesys/extended/Rubric.functionality 15%