userprog_SRC += userprog/tss.c # TSS management.
# No virtual memory code yet.
--#vm_SRC = vm/filename.c # Some file.
+-#vm_SRC = vm/file.c # Some file.
+vm_SRC = vm/page.c
+vm_SRC += vm/frame.c
+vm_SRC += vm/swap.c
#include "devices/disk.h"
+#include "threads/thread.h"
- /* The disk that contains the filesystem. */
+ /* The disk that contains the file system. */
struct disk *filesys_disk;
@@ -23,6 +25,7 @@ filesys_init (bool format)
- PANIC ("hd0:1 (hdb) not present, filesystem initialization failed");
+ PANIC ("hd0:1 (hdb) not present, file system initialization failed");
inode_init ();
+ cache_init ();
+/* Resolves relative or absolute file NAME.
+ Returns true if successful, false on failure.
+ Stores the directory corresponding to the name into *DIRP,
-+ and the file name part into BASENAME. */
++ and the file name part into BASE_NAME. */
+static bool
+resolve_name (const char *name,
-+ struct dir **dirp, char basename[NAME_MAX + 1])
++ struct dir **dirp, char base_name[NAME_MAX + 1])
+{
+ struct dir *dir = NULL;
+ struct inode *inode;
+
+ /* Return our results. */
+ *dirp = dir;
-+ strlcpy (basename, part, NAME_MAX + 1);
++ strlcpy (base_name, part, NAME_MAX + 1);
+ return true;
+
+ error:
+ /* Return failure. */
+ dir_close (dir);
+ *dirp = NULL;
-+ basename[0] = '\0';
++ base_name[0] = '\0';
+ return false;
}
\f
+filesys_create (const char *name, off_t initial_size, enum inode_type type)
{
+ struct dir *dir;
-+ char basename[NAME_MAX + 1];
++ char base_name[NAME_MAX + 1];
disk_sector_t inode_sector = 0;
- struct dir *dir = dir_open_root ();
- bool success = (dir != NULL
- && free_map_allocate (1, &inode_sector)
- && inode_create (inode_sector, initial_size)
- && dir_add (dir, name, inode_sector));
-+ bool success = (resolve_name (name, &dir, basename)
++ bool success = (resolve_name (name, &dir, base_name)
+ && free_map_allocate (&inode_sector)
+ && inode_create (inode_sector, initial_size, type)
-+ && dir_add (dir, basename, inode_sector));
++ && dir_add (dir, base_name, inode_sector));
if (!success && inode_sector != 0)
- free_map_release (inode_sector, 1);
+ free_map_release (inode_sector);
{
- struct dir *dir = dir_open_root ();
+ struct dir *dir = NULL;
-+ char basename[NAME_MAX + 1];
++ char base_name[NAME_MAX + 1];
struct inode *inode = NULL;
- if (dir != NULL)
+ inode = inode_open (ROOT_DIR_SECTOR);
+ else if (!strcmp (name, "."))
+ inode = inode_reopen (dir_get_inode (thread_current ()->wd));
-+ else if (resolve_name (name, &dir, basename))
-+ dir_lookup (dir, basename, &inode);
++ else if (resolve_name (name, &dir, base_name))
++ dir_lookup (dir, base_name, &inode);
dir_close (dir);
- return file_open (inode);
- struct dir *dir = dir_open_root ();
- bool success = dir != NULL && dir_remove (dir, name);
+ struct dir *dir = NULL;
-+ char basename[NAME_MAX + 1];
++ char base_name[NAME_MAX + 1];
+ bool success = false;
+
-+ if (resolve_name (name, &dir, basename))
-+ success = dir_remove (dir, basename);
++ if (resolve_name (name, &dir, base_name))
++ success = dir_remove (dir, base_name);
dir_close (dir);
@@ -91,5 +193,44 @@
+ }
+ else
+ {
-+ char basename[NAME_MAX + 1];
++ char base_name[NAME_MAX + 1];
+ struct inode *base_inode;
+ struct dir *base_dir;
-+ if (!resolve_name (name, &dir, basename)
-+ || !dir_lookup (dir, basename, &base_inode)
++ if (!resolve_name (name, &dir, base_name)
++ || !dir_lookup (dir, base_name, &base_inode)
+ || (base_dir = dir_open (base_inode)) == NULL)
+ {
+ dir_close (dir);
@@ -173,9 +308,13 @@ static void
do_format (void)
{
- printf ("Formatting filesystem...");
+ printf ("Formatting file system...");
+
+ /* Set up free map. */
free_map_create ();
@@ -30,7 +30,7 @@ fsutil_cat (char **argv)
char *buffer;
- printf ("Printing '%s' to the console...\n", filename);
-- file = filesys_open (filename);
-+ file = file_open (filesys_open (filename));
+ printf ("Printing '%s' to the console...\n", file_name);
+- file = filesys_open (file_name);
++ file = file_open (filesys_open (file_name));
if (file == NULL)
- PANIC ("%s: open failed", filename);
+ PANIC ("%s: open failed", file_name);
buffer = palloc_get_page (PAL_ASSERT);
@@ -102,9 +102,9 @@ fsutil_put (char **argv)
- PANIC ("%s: invalid file size %d", filename, size);
+ PANIC ("%s: invalid file size %d", file_name, size);
/* Create destination file. */
-- if (!filesys_create (filename, size))
-+ if (!filesys_create (filename, size, FILE_INODE))
- PANIC ("%s: create failed", filename);
-- dst = filesys_open (filename);
-+ dst = file_open (filesys_open (filename));
+- if (!filesys_create (file_name, size))
++ if (!filesys_create (file_name, size, FILE_INODE))
+ PANIC ("%s: create failed", file_name);
+- dst = filesys_open (file_name);
++ dst = file_open (filesys_open (file_name));
if (dst == NULL)
- PANIC ("%s: open failed", filename);
+ PANIC ("%s: open failed", file_name);
@@ -154,7 +154,7 @@ fsutil_get (char **argv)
PANIC ("couldn't allocate buffer");
/* Open source file. */
-- src = filesys_open (filename);
-+ src = file_open (filesys_open (filename));
+- src = filesys_open (file_name);
++ src = file_open (filesys_open (file_name));
if (src == NULL)
- PANIC ("%s: open failed", filename);
+ PANIC ("%s: open failed", file_name);
size = file_length (src);
Index: src/filesys/inode.c
diff -u src/filesys/inode.c~ src/filesys/inode.c
+ thread. */
+struct exec_info
+ {
-+ const char *filename; /* Program to load. */
++ const char *file_name; /* Program to load. */
+ struct semaphore load_done; /* "Up"ed when loading complete. */
+ struct wait_status *wait_status; /* Child process. */
+ struct dir *wd; /* Working directory. */
+ };
/* Starts a new thread running a user program loaded from
- FILENAME. The new thread may be scheduled (and may even exit)
+ FILE_NAME. The new thread may be scheduled (and may even exit)
@@ -28,41 +43,78 @@ static bool load (const char *cmdline, v
tid_t
- process_execute (const char *filename)
+ process_execute (const char *file_name)
{
- char *fn_copy;
+ struct dir *wd = thread_current ()->wd;
+ char *save_ptr;
tid_t tid;
-- /* Make a copy of FILENAME.
+- /* Make a copy of FILE_NAME.
- Otherwise there's a race between the caller and load(). */
- fn_copy = palloc_get_page (0);
- if (fn_copy == NULL)
+ /* Initialize exec_info. */
-+ exec.filename = filename;
++ exec.file_name = file_name;
+ exec.wd = wd != NULL ? dir_reopen (wd) : dir_open_root ();
+ if (exec.wd == NULL)
return TID_ERROR;
-- strlcpy (fn_copy, filename, PGSIZE);
+- strlcpy (fn_copy, file_name, PGSIZE);
+ sema_init (&exec.load_done, 0);
- /* Create a new thread to execute FILENAME. */
-- tid = thread_create (filename, PRI_DEFAULT, execute_thread, fn_copy);
+ /* Create a new thread to execute FILE_NAME. */
+- tid = thread_create (file_name, PRI_DEFAULT, execute_thread, fn_copy);
- if (tid == TID_ERROR)
- palloc_free_page (fn_copy);
-+ strlcpy (thread_name, filename, sizeof thread_name);
++ strlcpy (thread_name, file_name, sizeof thread_name);
+ strtok_r (thread_name, " ", &save_ptr);
+ tid = thread_create (thread_name, PRI_DEFAULT, execute_thread, &exec);
+ if (tid != TID_ERROR)
/* A thread function that loads a user process and starts it
running. */
static void
--execute_thread (void *filename_)
+-execute_thread (void *file_name_)
+execute_thread (void *exec_)
{
-- char *filename = filename_;
+- char *file_name = file_name_;
+ struct exec_info *exec = exec_;
struct intr_frame if_;
bool success;
if_.gs = if_.fs = if_.es = if_.ds = if_.ss = SEL_UDSEG;
if_.cs = SEL_UCSEG;
if_.eflags = FLAG_IF | FLAG_MBS;
-- success = load (filename, &if_.eip, &if_.esp);
-+ success = load (exec->filename, &if_.eip, &if_.esp);
+- success = load (file_name, &if_.eip, &if_.esp);
++ success = load (exec->file_name, &if_.eip, &if_.esp);
- /* If load failed, quit. */
-- palloc_free_page (filename);
+- palloc_free_page (file_name);
+ /* Allocate wait_status. */
+ if (success)
+ {
if (!success)
thread_exit ();
-@@ -76,18 +128,47 @@ execute_thread (void *filename_)
+@@ -76,18 +128,47 @@ execute_thread (void *file_name_)
NOT_REACHED ();
}
and its initial stack pointer into *ESP.
Returns true if successful, false otherwise. */
bool
--load (const char *filename, void (**eip) (void), void **esp)
+-load (const char *file_name, void (**eip) (void), void **esp)
+load (const char *cmd_line, void (**eip) (void), void **esp)
{
struct thread *t = thread_current ();
-+ char filename[NAME_MAX + 2];
++ char file_name[NAME_MAX + 2];
struct Elf32_Ehdr ehdr;
struct file *file = NULL;
off_t file_ofs;
int i;
/* Allocate and activate page directory. */
-@@ -220,13 +330,28 @@ load (const char *filename, void (**eip)
+@@ -220,13 +330,28 @@ load (const char *file_name, void (**eip)
goto done;
process_activate ();
+ goto done;
+ hash_init (t->pages, page_hash, page_less, NULL);
+
-+ /* Extract filename from command line. */
++ /* Extract file_name from command line. */
+ while (*cmd_line == ' ')
+ cmd_line++;
-+ strlcpy (filename, cmd_line, sizeof filename);
-+ cp = strchr (filename, ' ');
++ strlcpy (file_name, cmd_line, sizeof file_name);
++ cp = strchr (file_name, ' ');
+ if (cp != NULL)
+ *cp = '\0';
+
/* Open executable file. */
-- file = filesys_open (filename);
-+ t->bin_file = file = file_open (filesys_open (filename));
+- file = filesys_open (file_name);
++ t->bin_file = file = file_open (filesys_open (file_name));
if (file == NULL)
{
- printf ("load: %s: open failed\n", filename);
+ printf ("load: %s: open failed\n", file_name);
goto done;
}
+ file_deny_write (file);
/* Read and verify executable header. */
if (file_read (file, &ehdr, sizeof ehdr) != sizeof ehdr
-@@ -301,7 +426,7 @@ load (const char *filename, void (**eip)
+@@ -301,7 +426,7 @@ load (const char *file_name, void (**eip)
}
/* Set up stack. */
goto done;
/* Start address. */
-@@ -311,14 +436,11 @@ load (const char *filename, void (**eip)
+@@ -311,14 +436,11 @@ load (const char *file_name, void (**eip)
done:
/* We arrive here whether the load is successful or not. */
projects / pintos-anon / blobdiff