Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 530 deletions

diff --git a/ANDROID_3.4.5/fs/file_table.c b/ANDROID_3.4.5/fs/file_table.c
deleted file mode 100644
index 70f2a0fd..00000000
--- a/ANDROID_3.4.5/fs/file_table.c
+++ /dev/null
@@ -1,530 +0,0 @@
-/*
- *  linux/fs/file_table.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- *  Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/file.h>
-#include <linux/fdtable.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/security.h>
-#include <linux/eventpoll.h>
-#include <linux/rcupdate.h>
-#include <linux/mount.h>
-#include <linux/capability.h>
-#include <linux/cdev.h>
-#include <linux/fsnotify.h>
-#include <linux/sysctl.h>
-#include <linux/lglock.h>
-#include <linux/percpu_counter.h>
-#include <linux/percpu.h>
-#include <linux/ima.h>
-
-#include <linux/atomic.h>
-
-#include "internal.h"
-
-/* sysctl tunables... */
-struct files_stat_struct files_stat = {
-	.max_files = NR_FILE
-};
-
-DECLARE_LGLOCK(files_lglock);
-DEFINE_LGLOCK(files_lglock);
-
-/* SLAB cache for file structures */
-static struct kmem_cache *filp_cachep __read_mostly;
-
-static struct percpu_counter nr_files __cacheline_aligned_in_smp;
-
-static inline void file_free_rcu(struct rcu_head *head)
-{
-	struct file *f = container_of(head, struct file, f_u.fu_rcuhead);
-
-	put_cred(f->f_cred);
-	kmem_cache_free(filp_cachep, f);
-}
-
-static inline void file_free(struct file *f)
-{
-	percpu_counter_dec(&nr_files);
-	file_check_state(f);
-	call_rcu(&f->f_u.fu_rcuhead, file_free_rcu);
-}
-
-/*
- * Return the total number of open files in the system
- */
-static long get_nr_files(void)
-{
-	return percpu_counter_read_positive(&nr_files);
-}
-
-/*
- * Return the maximum number of open files in the system
- */
-unsigned long get_max_files(void)
-{
-	return files_stat.max_files;
-}
-EXPORT_SYMBOL_GPL(get_max_files);
-
-/*
- * Handle nr_files sysctl
- */
-#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
-int proc_nr_files(ctl_table *table, int write,
-                     void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	files_stat.nr_files = get_nr_files();
-	return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
-}
-#else
-int proc_nr_files(ctl_table *table, int write,
-                     void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	return -ENOSYS;
-}
-#endif
-
-/* Find an unused file structure and return a pointer to it.
- * Returns NULL, if there are no more free file structures or
- * we run out of memory.
- *
- * Be very careful using this.  You are responsible for
- * getting write access to any mount that you might assign
- * to this filp, if it is opened for write.  If this is not
- * done, you will imbalance int the mount's writer count
- * and a warning at __fput() time.
- */
-struct file *get_empty_filp(void)
-{
-	const struct cred *cred = current_cred();
-	static long old_max;
-	struct file * f;
-
-	/*
-	 * Privileged users can go above max_files
-	 */
-	if (get_nr_files() >= files_stat.max_files && !capable(CAP_SYS_ADMIN)) {
-		/*
-		 * percpu_counters are inaccurate.  Do an expensive check before
-		 * we go and fail.
-		 */
-		if (percpu_counter_sum_positive(&nr_files) >= files_stat.max_files)
-			goto over;
-	}
-
-	f = kmem_cache_zalloc(filp_cachep, GFP_KERNEL);
-	if (f == NULL)
-		goto fail;
-
-	percpu_counter_inc(&nr_files);
-	f->f_cred = get_cred(cred);
-	if (security_file_alloc(f))
-		goto fail_sec;
-
-	INIT_LIST_HEAD(&f->f_u.fu_list);
-	atomic_long_set(&f->f_count, 1);
-	rwlock_init(&f->f_owner.lock);
-	spin_lock_init(&f->f_lock);
-	eventpoll_init_file(f);
-	/* f->f_version: 0 */
-	return f;
-
-over:
-	/* Ran out of filps - report that */
-	if (get_nr_files() > old_max) {
-		pr_info("VFS: file-max limit %lu reached\n", get_max_files());
-		old_max = get_nr_files();
-	}
-	goto fail;
-
-fail_sec:
-	file_free(f);
-fail:
-	return NULL;
-}
-
-/**
- * alloc_file - allocate and initialize a 'struct file'
- * @mnt: the vfsmount on which the file will reside
- * @dentry: the dentry representing the new file
- * @mode: the mode with which the new file will be opened
- * @fop: the 'struct file_operations' for the new file
- *
- * Use this instead of get_empty_filp() to get a new
- * 'struct file'.  Do so because of the same initialization
- * pitfalls reasons listed for init_file().  This is a
- * preferred interface to using init_file().
- *
- * If all the callers of init_file() are eliminated, its
- * code should be moved into this function.
- */
-struct file *alloc_file(struct path *path, fmode_t mode,
-		const struct file_operations *fop)
-{
-	struct file *file;
-
-	file = get_empty_filp();
-	if (!file)
-		return NULL;
-
-	file->f_path = *path;
-	file->f_mapping = path->dentry->d_inode->i_mapping;
-	file->f_mode = mode;
-	file->f_op = fop;
-
-	/*
-	 * These mounts don't really matter in practice
-	 * for r/o bind mounts.  They aren't userspace-
-	 * visible.  We do this for consistency, and so
-	 * that we can do debugging checks at __fput()
-	 */
-	if ((mode & FMODE_WRITE) && !special_file(path->dentry->d_inode->i_mode)) {
-		file_take_write(file);
-		WARN_ON(mnt_clone_write(path->mnt));
-	}
-	if ((mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
-		i_readcount_inc(path->dentry->d_inode);
-	return file;
-}
-EXPORT_SYMBOL(alloc_file);
-
-/**
- * drop_file_write_access - give up ability to write to a file
- * @file: the file to which we will stop writing
- *
- * This is a central place which will give up the ability
- * to write to @file, along with access to write through
- * its vfsmount.
- */
-static void drop_file_write_access(struct file *file)
-{
-	struct vfsmount *mnt = file->f_path.mnt;
-	struct dentry *dentry = file->f_path.dentry;
-	struct inode *inode = dentry->d_inode;
-
-	put_write_access(inode);
-
-	if (special_file(inode->i_mode))
-		return;
-	if (file_check_writeable(file) != 0)
-		return;
-	mnt_drop_write(mnt);
-	file_release_write(file);
-}
-
-/* the real guts of fput() - releasing the last reference to file
- */
-static void __fput(struct file *file)
-{
-	struct dentry *dentry = file->f_path.dentry;
-	struct vfsmount *mnt = file->f_path.mnt;
-	struct inode *inode = dentry->d_inode;
-
-	might_sleep();
-
-	fsnotify_close(file);
-	/*
-	 * The function eventpoll_release() should be the first called
-	 * in the file cleanup chain.
-	 */
-	eventpoll_release(file);
-	locks_remove_flock(file);
-
-	if (unlikely(file->f_flags & FASYNC)) {
-		if (file->f_op && file->f_op->fasync)
-			file->f_op->fasync(-1, file, 0);
-	}
-	if (file->f_op && file->f_op->release)
-		file->f_op->release(inode, file);
-	security_file_free(file);
-	ima_file_free(file);
-	if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL &&
-		     !(file->f_mode & FMODE_PATH))) {
-		cdev_put(inode->i_cdev);
-	}
-	fops_put(file->f_op);
-	put_pid(file->f_owner.pid);
-	file_sb_list_del(file);
-	if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
-		i_readcount_dec(inode);
-	if (file->f_mode & FMODE_WRITE)
-		drop_file_write_access(file);
-	file->f_path.dentry = NULL;
-	file->f_path.mnt = NULL;
-	file_free(file);
-	dput(dentry);
-	mntput(mnt);
-}
-
-void fput(struct file *file)
-{
-	if (atomic_long_dec_and_test(&file->f_count))
-		__fput(file);
-}
-
-EXPORT_SYMBOL(fput);
-
-struct file *fget(unsigned int fd)
-{
-	struct file *file;
-	struct files_struct *files = current->files;
-
-	rcu_read_lock();
-	file = fcheck_files(files, fd);
-	if (file) {
-		/* File object ref couldn't be taken */
-		if (file->f_mode & FMODE_PATH ||
-		    !atomic_long_inc_not_zero(&file->f_count))
-			file = NULL;
-	}
-	rcu_read_unlock();
-
-	return file;
-}
-
-EXPORT_SYMBOL(fget);
-
-struct file *fget_raw(unsigned int fd)
-{
-	struct file *file;
-	struct files_struct *files = current->files;
-
-	rcu_read_lock();
-	file = fcheck_files(files, fd);
-	if (file) {
-		/* File object ref couldn't be taken */
-		if (!atomic_long_inc_not_zero(&file->f_count))
-			file = NULL;
-	}
-	rcu_read_unlock();
-
-	return file;
-}
-
-EXPORT_SYMBOL(fget_raw);
-
-/*
- * Lightweight file lookup - no refcnt increment if fd table isn't shared.
- *
- * You can use this instead of fget if you satisfy all of the following
- * conditions:
- * 1) You must call fput_light before exiting the syscall and returning control
- *    to userspace (i.e. you cannot remember the returned struct file * after
- *    returning to userspace).
- * 2) You must not call filp_close on the returned struct file * in between
- *    calls to fget_light and fput_light.
- * 3) You must not clone the current task in between the calls to fget_light
- *    and fput_light.
- *
- * The fput_needed flag returned by fget_light should be passed to the
- * corresponding fput_light.
- */
-struct file *fget_light(unsigned int fd, int *fput_needed)
-{
-	struct file *file;
-	struct files_struct *files = current->files;
-
-	*fput_needed = 0;
-	if (atomic_read(&files->count) == 1) {
-		file = fcheck_files(files, fd);
-		if (file && (file->f_mode & FMODE_PATH))
-			file = NULL;
-	} else {
-		rcu_read_lock();
-		file = fcheck_files(files, fd);
-		if (file) {
-			if (!(file->f_mode & FMODE_PATH) &&
-			    atomic_long_inc_not_zero(&file->f_count))
-				*fput_needed = 1;
-			else
-				/* Didn't get the reference, someone's freed */
-				file = NULL;
-		}
-		rcu_read_unlock();
-	}
-
-	return file;
-}
-
-struct file *fget_raw_light(unsigned int fd, int *fput_needed)
-{
-	struct file *file;
-	struct files_struct *files = current->files;
-
-	*fput_needed = 0;
-	if (atomic_read(&files->count) == 1) {
-		file = fcheck_files(files, fd);
-	} else {
-		rcu_read_lock();
-		file = fcheck_files(files, fd);
-		if (file) {
-			if (atomic_long_inc_not_zero(&file->f_count))
-				*fput_needed = 1;
-			else
-				/* Didn't get the reference, someone's freed */
-				file = NULL;
-		}
-		rcu_read_unlock();
-	}
-
-	return file;
-}
-
-void put_filp(struct file *file)
-{
-	if (atomic_long_dec_and_test(&file->f_count)) {
-		security_file_free(file);
-		file_sb_list_del(file);
-		file_free(file);
-	}
-}
-
-static inline int file_list_cpu(struct file *file)
-{
-#ifdef CONFIG_SMP
-	return file->f_sb_list_cpu;
-#else
-	return smp_processor_id();
-#endif
-}
-
-/* helper for file_sb_list_add to reduce ifdefs */
-static inline void __file_sb_list_add(struct file *file, struct super_block *sb)
-{
-	struct list_head *list;
-#ifdef CONFIG_SMP
-	int cpu;
-	cpu = smp_processor_id();
-	file->f_sb_list_cpu = cpu;
-	list = per_cpu_ptr(sb->s_files, cpu);
-#else
-	list = &sb->s_files;
-#endif
-	list_add(&file->f_u.fu_list, list);
-}
-
-/**
- * file_sb_list_add - add a file to the sb's file list
- * @file: file to add
- * @sb: sb to add it to
- *
- * Use this function to associate a file with the superblock of the inode it
- * refers to.
- */
-void file_sb_list_add(struct file *file, struct super_block *sb)
-{
-	lg_local_lock(files_lglock);
-	__file_sb_list_add(file, sb);
-	lg_local_unlock(files_lglock);
-}
-
-/**
- * file_sb_list_del - remove a file from the sb's file list
- * @file: file to remove
- * @sb: sb to remove it from
- *
- * Use this function to remove a file from its superblock.
- */
-void file_sb_list_del(struct file *file)
-{
-	if (!list_empty(&file->f_u.fu_list)) {
-		lg_local_lock_cpu(files_lglock, file_list_cpu(file));
-		list_del_init(&file->f_u.fu_list);
-		lg_local_unlock_cpu(files_lglock, file_list_cpu(file));
-	}
-}
-
-#ifdef CONFIG_SMP
-
-/*
- * These macros iterate all files on all CPUs for a given superblock.
- * files_lglock must be held globally.
- */
-#define do_file_list_for_each_entry(__sb, __file)		\
-{								\
-	int i;							\
-	for_each_possible_cpu(i) {				\
-		struct list_head *list;				\
-		list = per_cpu_ptr((__sb)->s_files, i);		\
-		list_for_each_entry((__file), list, f_u.fu_list)
-
-#define while_file_list_for_each_entry				\
-	}							\
-}
-
-#else
-
-#define do_file_list_for_each_entry(__sb, __file)		\
-{								\
-	struct list_head *list;					\
-	list = &(sb)->s_files;					\
-	list_for_each_entry((__file), list, f_u.fu_list)
-
-#define while_file_list_for_each_entry				\
-}
-
-#endif
-
-/**
- *	mark_files_ro - mark all files read-only
- *	@sb: superblock in question
- *
- *	All files are marked read-only.  We don't care about pending
- *	delete files so this should be used in 'force' mode only.
- */
-void mark_files_ro(struct super_block *sb)
-{
-	struct file *f;
-
-retry:
-	lg_global_lock(files_lglock);
-	do_file_list_for_each_entry(sb, f) {
-		struct vfsmount *mnt;
-		if (!S_ISREG(f->f_path.dentry->d_inode->i_mode))
-		       continue;
-		if (!file_count(f))
-			continue;
-		if (!(f->f_mode & FMODE_WRITE))
-			continue;
-		spin_lock(&f->f_lock);
-		f->f_mode &= ~FMODE_WRITE;
-		spin_unlock(&f->f_lock);
-		if (file_check_writeable(f) != 0)
-			continue;
-		file_release_write(f);
-		mnt = mntget(f->f_path.mnt);
-		/* This can sleep, so we can't hold the spinlock. */
-		lg_global_unlock(files_lglock);
-		mnt_drop_write(mnt);
-		mntput(mnt);
-		goto retry;
-	} while_file_list_for_each_entry;
-	lg_global_unlock(files_lglock);
-}
-
-void __init files_init(unsigned long mempages)
-{ 
-	unsigned long n;
-
-	filp_cachep = kmem_cache_create("filp", sizeof(struct file), 0,
-			SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL);
-
-	/*
-	 * One file with associated inode and dcache is very roughly 1K.
-	 * Per default don't use more than 10% of our memory for files. 
-	 */ 
-
-	n = (mempages * (PAGE_SIZE / 1024)) / 10;
-	files_stat.max_files = max_t(unsigned long, n, NR_FILE);
-	files_defer_init();
-	lg_lock_init(files_lglock);
-	percpu_counter_init(&nr_files, 0);
-}