-#include "fsutil.h"
+#include "filesys/fsutil.h"
+#include <debug.h>
#include <stdbool.h>
-#include "file.h"
-#include "filesys.h"
-#include "lib/debug.h"
-#include "lib/lib.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "filesys/file.h"
+#include "filesys/filesys.h"
+#include "devices/partition.h"
#include "threads/mmu.h"
#include "threads/palloc.h"
-/* Filename and file size to use for copy operations,
- as "filename:size". */
-char *fsutil_copy_arg;
+/* Destination filename and size for copy-in operations. */
+char *fsutil_copyin_file;
+int fsutil_copyin_size;
+
+/* Source filename for copy-out operations. */
+char *fsutil_copyout_file;
/* Name of a file print to print to console. */
char *fsutil_print_file;
/* Name of a file to delete. */
char *fsutil_remove_file;
-/* List all files in the filesystem to the system console? */
+/* List all files in the file system to the system console? */
bool fsutil_list_files;
-/* Dump full contents of filesystem to the system console? */
+/* Dump full contents of file system to the system console? */
bool fsutil_dump_filesys;
/* Copies from the "scratch" disk, hdc or hd1:0,
- to a file named FILENAME in the filesystem.
+ to a file named FILENAME in the file system.
The file will be SIZE bytes in length. */
static void
-copy (const char *filename, off_t size)
+copy_in (const char *filename, off_t size)
{
- struct disk *src;
- struct file dst;
+ struct partition *src;
+ struct file *dst;
disk_sector_t sector;
void *buffer;
- /* Open source disk. */
- src = disk_get (1, 0);
+ /* Open scratch partition. */
+ src = partition_get (PARTITION_SCRATCH);
if (src == NULL)
- PANIC ("couldn't open source disk (hdc or hd1:0)");
- if (size > (off_t) disk_size (src) * DISK_SECTOR_SIZE)
- PANIC ("source disk is too small for %lld-byte file",
+ PANIC ("couldn't open scratch partition");
+ if (size > (off_t) partition_size (src) * DISK_SECTOR_SIZE)
+ PANIC ("scratch partition is too small for %lld-byte file",
(unsigned long long) size);
/* Create destination file. */
if (!filesys_create (filename, size))
PANIC ("%s: create failed", filename);
- if (!filesys_open (filename, &dst))
+ dst = filesys_open (filename);
+ if (dst == NULL)
PANIC ("%s: open failed", filename);
/* Do copy. */
- buffer = palloc_get (PAL_ASSERT);
+ buffer = palloc_get_page (PAL_ASSERT);
sector = 0;
while (size > 0)
{
int chunk_size = size > DISK_SECTOR_SIZE ? DISK_SECTOR_SIZE : size;
- disk_read (src, sector++, buffer);
- if (file_write (&dst, buffer, chunk_size) != chunk_size)
+ partition_read (src, sector++, buffer);
+ if (file_write (dst, buffer, chunk_size) != chunk_size)
PANIC ("%s: write failed with %lld bytes unwritten",
filename, (unsigned long long) size);
size -= chunk_size;
}
- palloc_free (buffer);
+ palloc_free_page (buffer);
+
+ file_close (dst);
+}
+
+/* Copies FILENAME from the file system to the scratch disk.
+ The first four bytes of the first sector in the disk
+ receive the file's size in bytes as a little-endian integer.
+ The second and subsequent sectors receive the file's data. */
+static void
+copy_out (const char *filename)
+{
+ void *buffer;
+ struct file *src;
+ struct partition *dst;
+ off_t size;
+ disk_sector_t sector;
+
+ buffer = palloc_get_page (PAL_ASSERT | PAL_ZERO);
+
+ /* Open source file. */
+ src = filesys_open (filename);
+ if (src == NULL)
+ PANIC ("%s: open failed", filename);
+ size = file_length (src);
+
+ /* Open target partition. */
+ dst = partition_get (PARTITION_SCRATCH);
+ if (dst == NULL)
+ PANIC ("couldn't open scratch partition");
+ if (size + DISK_SECTOR_SIZE
+ > (off_t) partition_size (dst) * DISK_SECTOR_SIZE)
+ PANIC ("scratch partition is too small for %lld-byte file",
+ (unsigned long long) size);
+
+ /* Write size to sector 0. */
+ *(uint32_t *) buffer = size;
+ partition_write (dst, 0, buffer);
+
+ /* Do copy. */
+ sector = 1;
+ while (size > 0)
+ {
+ int chunk_size = size > DISK_SECTOR_SIZE ? DISK_SECTOR_SIZE : size;
+ if (file_read (src, buffer, chunk_size) != chunk_size)
+ PANIC ("%s: read failed with %lld bytes unread",
+ filename, (unsigned long long) size);
+ partition_write (dst, sector++, buffer);
+ size -= chunk_size;
+ }
+ palloc_free_page (buffer);
- file_close (&dst);
+ file_close (src);
}
-/* Executes the filesystem operations described by the variables
+/* Executes the file system operations described by the variables
declared in fsutil.h. */
void
fsutil_run (void)
{
- if (fsutil_copy_arg != NULL)
- {
- char *save;
- char *filename = strtok_r (fsutil_copy_arg, ":", &save);
- char *size = strtok_r (NULL, "", &save);
-
- if (filename == NULL || size == NULL)
- PANIC ("bad format for -cp option; use -u for usage");
+ if (fsutil_copyin_file != NULL)
+ copy_in (fsutil_copyin_file, fsutil_copyin_size);
- copy (filename, atoi (size));
- }
+ if (fsutil_copyout_file != NULL)
+ copy_out (fsutil_copyout_file);
if (fsutil_print_file != NULL)
fsutil_print (fsutil_print_file);
if (fsutil_remove_file != NULL)
{
if (filesys_remove (fsutil_remove_file))
- printk ("%s: removed\n", fsutil_remove_file);
+ printf ("%s: removed\n", fsutil_remove_file);
else
PANIC ("%s: remove failed\n", fsutil_remove_file);
}
void
fsutil_print (const char *filename)
{
- struct file file;
+ struct file *file;
char *buffer;
- if (!filesys_open (filename, &file))
+ file = filesys_open (filename);
+ if (file == NULL)
PANIC ("%s: open failed", filename);
- buffer = palloc_get (PAL_ASSERT);
+ buffer = palloc_get_page (PAL_ASSERT);
for (;;)
{
- off_t n = file_read (&file, buffer, PGSIZE);
+ off_t n = file_read (file, buffer, PGSIZE);
if (n == 0)
break;
- hex_dump (buffer, n, true);
+ hex_dump (0, buffer, n, true);
}
- palloc_free (buffer);
- file_close (&file);
+ palloc_free_page (buffer);
+ file_close (file);
}
projects / pintos-anon / blobdiff