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, 463 deletions

diff --git a/ANDROID_3.4.5/fs/notify/notification.c b/ANDROID_3.4.5/fs/notify/notification.c
deleted file mode 100644
index c887b137..00000000
--- a/ANDROID_3.4.5/fs/notify/notification.c
+++ /dev/null
@@ -1,463 +0,0 @@
-/*
- *  Copyright (C) 2008 Red Hat, Inc., Eric Paris <eparis@redhat.com>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2, or (at your option)
- *  any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; see the file COPYING.  If not, write to
- *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/*
- * Basic idea behind the notification queue: An fsnotify group (like inotify)
- * sends the userspace notification about events asyncronously some time after
- * the event happened.  When inotify gets an event it will need to add that
- * event to the group notify queue.  Since a single event might need to be on
- * multiple group's notification queues we can't add the event directly to each
- * queue and instead add a small "event_holder" to each queue.  This event_holder
- * has a pointer back to the original event.  Since the majority of events are
- * going to end up on one, and only one, notification queue we embed one
- * event_holder into each event.  This means we have a single allocation instead
- * of always needing two.  If the embedded event_holder is already in use by
- * another group a new event_holder (from fsnotify_event_holder_cachep) will be
- * allocated and used.
- */
-
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/mount.h>
-#include <linux/mutex.h>
-#include <linux/namei.h>
-#include <linux/path.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-
-#include <linux/atomic.h>
-
-#include <linux/fsnotify_backend.h>
-#include "fsnotify.h"
-
-static struct kmem_cache *fsnotify_event_cachep;
-static struct kmem_cache *fsnotify_event_holder_cachep;
-/*
- * This is a magic event we send when the q is too full.  Since it doesn't
- * hold real event information we just keep one system wide and use it any time
- * it is needed.  It's refcnt is set 1 at kernel init time and will never
- * get set to 0 so it will never get 'freed'
- */
-static struct fsnotify_event *q_overflow_event;
-static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0);
-
-/**
- * fsnotify_get_cookie - return a unique cookie for use in synchronizing events.
- * Called from fsnotify_move, which is inlined into filesystem modules.
- */
-u32 fsnotify_get_cookie(void)
-{
-	return atomic_inc_return(&fsnotify_sync_cookie);
-}
-EXPORT_SYMBOL_GPL(fsnotify_get_cookie);
-
-/* return true if the notify queue is empty, false otherwise */
-bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group)
-{
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
-	return list_empty(&group->notification_list) ? true : false;
-}
-
-void fsnotify_get_event(struct fsnotify_event *event)
-{
-	atomic_inc(&event->refcnt);
-}
-
-void fsnotify_put_event(struct fsnotify_event *event)
-{
-	if (!event)
-		return;
-
-	if (atomic_dec_and_test(&event->refcnt)) {
-		pr_debug("%s: event=%p\n", __func__, event);
-
-		if (event->data_type == FSNOTIFY_EVENT_PATH)
-			path_put(&event->path);
-
-		BUG_ON(!list_empty(&event->private_data_list));
-
-		kfree(event->file_name);
-		put_pid(event->tgid);
-		kmem_cache_free(fsnotify_event_cachep, event);
-	}
-}
-
-struct fsnotify_event_holder *fsnotify_alloc_event_holder(void)
-{
-	return kmem_cache_alloc(fsnotify_event_holder_cachep, GFP_KERNEL);
-}
-
-void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder)
-{
-	if (holder)
-		kmem_cache_free(fsnotify_event_holder_cachep, holder);
-}
-
-/*
- * Find the private data that the group previously attached to this event when
- * the group added the event to the notification queue (fsnotify_add_notify_event)
- */
-struct fsnotify_event_private_data *fsnotify_remove_priv_from_event(struct fsnotify_group *group, struct fsnotify_event *event)
-{
-	struct fsnotify_event_private_data *lpriv;
-	struct fsnotify_event_private_data *priv = NULL;
-
-	assert_spin_locked(&event->lock);
-
-	list_for_each_entry(lpriv, &event->private_data_list, event_list) {
-		if (lpriv->group == group) {
-			priv = lpriv;
-			list_del(&priv->event_list);
-			break;
-		}
-	}
-	return priv;
-}
-
-/*
- * Add an event to the group notification queue.  The group can later pull this
- * event off the queue to deal with.  If the event is successfully added to the
- * group's notification queue, a reference is taken on event.
- */
-struct fsnotify_event *fsnotify_add_notify_event(struct fsnotify_group *group, struct fsnotify_event *event,
-						 struct fsnotify_event_private_data *priv,
-						 struct fsnotify_event *(*merge)(struct list_head *,
-										 struct fsnotify_event *))
-{
-	struct fsnotify_event *return_event = NULL;
-	struct fsnotify_event_holder *holder = NULL;
-	struct list_head *list = &group->notification_list;
-
-	pr_debug("%s: group=%p event=%p priv=%p\n", __func__, group, event, priv);
-
-	/*
-	 * There is one fsnotify_event_holder embedded inside each fsnotify_event.
-	 * Check if we expect to be able to use that holder.  If not alloc a new
-	 * holder.
-	 * For the overflow event it's possible that something will use the in
-	 * event holder before we get the lock so we may need to jump back and
-	 * alloc a new holder, this can't happen for most events...
-	 */
-	if (!list_empty(&event->holder.event_list)) {
-alloc_holder:
-		holder = fsnotify_alloc_event_holder();
-		if (!holder)
-			return ERR_PTR(-ENOMEM);
-	}
-
-	mutex_lock(&group->notification_mutex);
-
-	if (group->q_len >= group->max_events) {
-		event = q_overflow_event;
-
-		/*
-		 * we need to return the overflow event
-		 * which means we need a ref
-		 */
-		fsnotify_get_event(event);
-		return_event = event;
-
-		/* sorry, no private data on the overflow event */
-		priv = NULL;
-	}
-
-	if (!list_empty(list) && merge) {
-		struct fsnotify_event *tmp;
-
-		tmp = merge(list, event);
-		if (tmp) {
-			mutex_unlock(&group->notification_mutex);
-
-			if (return_event)
-				fsnotify_put_event(return_event);
-			if (holder != &event->holder)
-				fsnotify_destroy_event_holder(holder);
-			return tmp;
-		}
-	}
-
-	spin_lock(&event->lock);
-
-	if (list_empty(&event->holder.event_list)) {
-		if (unlikely(holder))
-			fsnotify_destroy_event_holder(holder);
-		holder = &event->holder;
-	} else if (unlikely(!holder)) {
-		/* between the time we checked above and got the lock the in
-		 * event holder was used, go back and get a new one */
-		spin_unlock(&event->lock);
-		mutex_unlock(&group->notification_mutex);
-
-		if (return_event) {
-			fsnotify_put_event(return_event);
-			return_event = NULL;
-		}
-
-		goto alloc_holder;
-	}
-
-	group->q_len++;
-	holder->event = event;
-
-	fsnotify_get_event(event);
-	list_add_tail(&holder->event_list, list);
-	if (priv)
-		list_add_tail(&priv->event_list, &event->private_data_list);
-	spin_unlock(&event->lock);
-	mutex_unlock(&group->notification_mutex);
-
-	wake_up(&group->notification_waitq);
-	return return_event;
-}
-
-/*
- * Remove and return the first event from the notification list.  There is a
- * reference held on this event since it was on the list.  It is the responsibility
- * of the caller to drop this reference.
- */
-struct fsnotify_event *fsnotify_remove_notify_event(struct fsnotify_group *group)
-{
-	struct fsnotify_event *event;
-	struct fsnotify_event_holder *holder;
-
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
-
-	pr_debug("%s: group=%p\n", __func__, group);
-
-	holder = list_first_entry(&group->notification_list, struct fsnotify_event_holder, event_list);
-
-	event = holder->event;
-
-	spin_lock(&event->lock);
-	holder->event = NULL;
-	list_del_init(&holder->event_list);
-	spin_unlock(&event->lock);
-
-	/* event == holder means we are referenced through the in event holder */
-	if (holder != &event->holder)
-		fsnotify_destroy_event_holder(holder);
-
-	group->q_len--;
-
-	return event;
-}
-
-/*
- * This will not remove the event, that must be done with fsnotify_remove_notify_event()
- */
-struct fsnotify_event *fsnotify_peek_notify_event(struct fsnotify_group *group)
-{
-	struct fsnotify_event *event;
-	struct fsnotify_event_holder *holder;
-
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
-
-	holder = list_first_entry(&group->notification_list, struct fsnotify_event_holder, event_list);
-	event = holder->event;
-
-	return event;
-}
-
-/*
- * Called when a group is being torn down to clean up any outstanding
- * event notifications.
- */
-void fsnotify_flush_notify(struct fsnotify_group *group)
-{
-	struct fsnotify_event *event;
-	struct fsnotify_event_private_data *priv;
-
-	mutex_lock(&group->notification_mutex);
-	while (!fsnotify_notify_queue_is_empty(group)) {
-		event = fsnotify_remove_notify_event(group);
-		/* if they don't implement free_event_priv they better not have attached any */
-		if (group->ops->free_event_priv) {
-			spin_lock(&event->lock);
-			priv = fsnotify_remove_priv_from_event(group, event);
-			spin_unlock(&event->lock);
-			if (priv)
-				group->ops->free_event_priv(priv);
-		}
-		fsnotify_put_event(event); /* matches fsnotify_add_notify_event */
-	}
-	mutex_unlock(&group->notification_mutex);
-}
-
-static void initialize_event(struct fsnotify_event *event)
-{
-	INIT_LIST_HEAD(&event->holder.event_list);
-	atomic_set(&event->refcnt, 1);
-
-	spin_lock_init(&event->lock);
-
-	INIT_LIST_HEAD(&event->private_data_list);
-}
-
-/*
- * Caller damn well better be holding whatever mutex is protecting the
- * old_holder->event_list and the new_event must be a clean event which
- * cannot be found anywhere else in the kernel.
- */
-int fsnotify_replace_event(struct fsnotify_event_holder *old_holder,
-			   struct fsnotify_event *new_event)
-{
-	struct fsnotify_event *old_event = old_holder->event;
-	struct fsnotify_event_holder *new_holder = &new_event->holder;
-
-	enum event_spinlock_class {
-		SPINLOCK_OLD,
-		SPINLOCK_NEW,
-	};
-
-	pr_debug("%s: old_event=%p new_event=%p\n", __func__, old_event, new_event);
-
-	/*
-	 * if the new_event's embedded holder is in use someone
-	 * screwed up and didn't give us a clean new event.
-	 */
-	BUG_ON(!list_empty(&new_holder->event_list));
-
-	spin_lock_nested(&old_event->lock, SPINLOCK_OLD);
-	spin_lock_nested(&new_event->lock, SPINLOCK_NEW);
-
-	new_holder->event = new_event;
-	list_replace_init(&old_holder->event_list, &new_holder->event_list);
-
-	spin_unlock(&new_event->lock);
-	spin_unlock(&old_event->lock);
-
-	/* event == holder means we are referenced through the in event holder */
-	if (old_holder != &old_event->holder)
-		fsnotify_destroy_event_holder(old_holder);
-
-	fsnotify_get_event(new_event); /* on the list take reference */
-	fsnotify_put_event(old_event); /* off the list, drop reference */
-
-	return 0;
-}
-
-struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event)
-{
-	struct fsnotify_event *event;
-
-	event = kmem_cache_alloc(fsnotify_event_cachep, GFP_KERNEL);
-	if (!event)
-		return NULL;
-
-	pr_debug("%s: old_event=%p new_event=%p\n", __func__, old_event, event);
-
-	memcpy(event, old_event, sizeof(*event));
-	initialize_event(event);
-
-	if (event->name_len) {
-		event->file_name = kstrdup(old_event->file_name, GFP_KERNEL);
-		if (!event->file_name) {
-			kmem_cache_free(fsnotify_event_cachep, event);
-			return NULL;
-		}
-	}
-	event->tgid = get_pid(old_event->tgid);
-	if (event->data_type == FSNOTIFY_EVENT_PATH)
-		path_get(&event->path);
-
-	return event;
-}
-
-/*
- * fsnotify_create_event - Allocate a new event which will be sent to each
- * group's handle_event function if the group was interested in this
- * particular event.
- *
- * @to_tell the inode which is supposed to receive the event (sometimes a
- *	parent of the inode to which the event happened.
- * @mask what actually happened.
- * @data pointer to the object which was actually affected
- * @data_type flag indication if the data is a file, path, inode, nothing...
- * @name the filename, if available
- */
-struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask, void *data,
-					     int data_type, const unsigned char *name,
-					     u32 cookie, gfp_t gfp)
-{
-	struct fsnotify_event *event;
-
-	event = kmem_cache_zalloc(fsnotify_event_cachep, gfp);
-	if (!event)
-		return NULL;
-
-	pr_debug("%s: event=%p to_tell=%p mask=%x data=%p data_type=%d\n",
-		 __func__, event, to_tell, mask, data, data_type);
-
-	initialize_event(event);
-
-	if (name) {
-		event->file_name = kstrdup(name, gfp);
-		if (!event->file_name) {
-			kmem_cache_free(fsnotify_event_cachep, event);
-			return NULL;
-		}
-		event->name_len = strlen(event->file_name);
-	}
-
-	event->tgid = get_pid(task_tgid(current));
-	event->sync_cookie = cookie;
-	event->to_tell = to_tell;
-	event->data_type = data_type;
-
-	switch (data_type) {
-	case FSNOTIFY_EVENT_PATH: {
-		struct path *path = data;
-		event->path.dentry = path->dentry;
-		event->path.mnt = path->mnt;
-		path_get(&event->path);
-		break;
-	}
-	case FSNOTIFY_EVENT_INODE:
-		event->inode = data;
-		break;
-	case FSNOTIFY_EVENT_NONE:
-		event->inode = NULL;
-		event->path.dentry = NULL;
-		event->path.mnt = NULL;
-		break;
-	default:
-		BUG();
-	}
-
-	event->mask = mask;
-
-	return event;
-}
-
-static __init int fsnotify_notification_init(void)
-{
-	fsnotify_event_cachep = KMEM_CACHE(fsnotify_event, SLAB_PANIC);
-	fsnotify_event_holder_cachep = KMEM_CACHE(fsnotify_event_holder, SLAB_PANIC);
-
-	q_overflow_event = fsnotify_create_event(NULL, FS_Q_OVERFLOW, NULL,
-						 FSNOTIFY_EVENT_NONE, NULL, 0,
-						 GFP_KERNEL);
-	if (!q_overflow_event)
-		panic("unable to allocate fsnotify q_overflow_event\n");
-
-	return 0;
-}
-subsys_initcall(fsnotify_notification_init);