1 files changed, 0 insertions, 314 deletions
diff --git a/ANDROID_3.4.5/fs/configfs/symlink.c b/ANDROID_3.4.5/fs/configfs/symlink.c
deleted file mode 100644
index cc9f2546..00000000
--- a/ANDROID_3.4.5/fs/configfs/symlink.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/* -*- mode: c; c-basic-offset: 8; -*-
- * vim: noexpandtab sw=8 ts=8 sts=0:
- *
- * symlink.c - operations for configfs symlinks.
- *
- * 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 of the License, 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; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- *
- * Based on sysfs:
- * 	sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel
- *
- * configfs Copyright (C) 2005 Oracle.  All rights reserved.
- */
-
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/namei.h>
-#include <linux/slab.h>
-
-#include <linux/configfs.h>
-#include "configfs_internal.h"
-
-/* Protects attachments of new symlinks */
-DEFINE_MUTEX(configfs_symlink_mutex);
-
-static int item_depth(struct config_item * item)
-{
-	struct config_item * p = item;
-	int depth = 0;
-	do { depth++; } while ((p = p->ci_parent) && !configfs_is_root(p));
-	return depth;
-}
-
-static int item_path_length(struct config_item * item)
-{
-	struct config_item * p = item;
-	int length = 1;
-	do {
-		length += strlen(config_item_name(p)) + 1;
-		p = p->ci_parent;
-	} while (p && !configfs_is_root(p));
-	return length;
-}
-
-static void fill_item_path(struct config_item * item, char * buffer, int length)
-{
-	struct config_item * p;
-
-	--length;
-	for (p = item; p && !configfs_is_root(p); p = p->ci_parent) {
-		int cur = strlen(config_item_name(p));
-
-		/* back up enough to print this bus id with '/' */
-		length -= cur;
-		strncpy(buffer + length,config_item_name(p),cur);
-		*(buffer + --length) = '/';
-	}
-}
-
-static int create_link(struct config_item *parent_item,
-		       struct config_item *item,
-		       struct dentry *dentry)
-{
-	struct configfs_dirent *target_sd = item->ci_dentry->d_fsdata;
-	struct configfs_symlink *sl;
-	int ret;
-
-	ret = -ENOENT;
-	if (!configfs_dirent_is_ready(target_sd))
-		goto out;
-	ret = -ENOMEM;
-	sl = kmalloc(sizeof(struct configfs_symlink), GFP_KERNEL);
-	if (sl) {
-		sl->sl_target = config_item_get(item);
-		spin_lock(&configfs_dirent_lock);
-		if (target_sd->s_type & CONFIGFS_USET_DROPPING) {
-			spin_unlock(&configfs_dirent_lock);
-			config_item_put(item);
-			kfree(sl);
-			return -ENOENT;
-		}
-		list_add(&sl->sl_list, &target_sd->s_links);
-		spin_unlock(&configfs_dirent_lock);
-		ret = configfs_create_link(sl, parent_item->ci_dentry,
-					   dentry);
-		if (ret) {
-			spin_lock(&configfs_dirent_lock);
-			list_del_init(&sl->sl_list);
-			spin_unlock(&configfs_dirent_lock);
-			config_item_put(item);
-			kfree(sl);
-		}
-	}
-
-out:
-	return ret;
-}
-
-
-static int get_target(const char *symname, struct path *path,
-		      struct config_item **target, struct super_block *sb)
-{
-	int ret;
-
-	ret = kern_path(symname, LOOKUP_FOLLOW|LOOKUP_DIRECTORY, path);
-	if (!ret) {
-		if (path->dentry->d_sb == sb) {
-			*target = configfs_get_config_item(path->dentry);
-			if (!*target) {
-				ret = -ENOENT;
-				path_put(path);
-			}
-		} else {
-			ret = -EPERM;
-			path_put(path);
-		}
-	}
-
-	return ret;
-}
-
-
-int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
-{
-	int ret;
-	struct path path;
-	struct configfs_dirent *sd;
-	struct config_item *parent_item;
-	struct config_item *target_item = NULL;
-	struct config_item_type *type;
-
-	sd = dentry->d_parent->d_fsdata;
-	/*
-	 * Fake invisibility if dir belongs to a group/default groups hierarchy
-	 * being attached
-	 */
-	ret = -ENOENT;
-	if (!configfs_dirent_is_ready(sd))
-		goto out;
-
-	parent_item = configfs_get_config_item(dentry->d_parent);
-	type = parent_item->ci_type;
-
-	ret = -EPERM;
-	if (!type || !type->ct_item_ops ||
-	    !type->ct_item_ops->allow_link)
-		goto out_put;
-
-	ret = get_target(symname, &path, &target_item, dentry->d_sb);
-	if (ret)
-		goto out_put;
-
-	ret = type->ct_item_ops->allow_link(parent_item, target_item);
-	if (!ret) {
-		mutex_lock(&configfs_symlink_mutex);
-		ret = create_link(parent_item, target_item, dentry);
-		mutex_unlock(&configfs_symlink_mutex);
-		if (ret && type->ct_item_ops->drop_link)
-			type->ct_item_ops->drop_link(parent_item,
-						     target_item);
-	}
-
-	config_item_put(target_item);
-	path_put(&path);
-
-out_put:
-	config_item_put(parent_item);
-
-out:
-	return ret;
-}
-
-int configfs_unlink(struct inode *dir, struct dentry *dentry)
-{
-	struct configfs_dirent *sd = dentry->d_fsdata;
-	struct configfs_symlink *sl;
-	struct config_item *parent_item;
-	struct config_item_type *type;
-	int ret;
-
-	ret = -EPERM;  /* What lack-of-symlink returns */
-	if (!(sd->s_type & CONFIGFS_ITEM_LINK))
-		goto out;
-
-	sl = sd->s_element;
-
-	parent_item = configfs_get_config_item(dentry->d_parent);
-	type = parent_item->ci_type;
-
-	spin_lock(&configfs_dirent_lock);
-	list_del_init(&sd->s_sibling);
-	spin_unlock(&configfs_dirent_lock);
-	configfs_drop_dentry(sd, dentry->d_parent);
-	dput(dentry);
-	configfs_put(sd);
-
-	/*
-	 * drop_link() must be called before
-	 * list_del_init(&sl->sl_list), so that the order of
-	 * drop_link(this, target) and drop_item(target) is preserved.
-	 */
-	if (type && type->ct_item_ops &&
-	    type->ct_item_ops->drop_link)
-		type->ct_item_ops->drop_link(parent_item,
-					       sl->sl_target);
-
-	spin_lock(&configfs_dirent_lock);
-	list_del_init(&sl->sl_list);
-	spin_unlock(&configfs_dirent_lock);
-
-	/* Put reference from create_link() */
-	config_item_put(sl->sl_target);
-	kfree(sl);
-
-	config_item_put(parent_item);
-
-	ret = 0;
-
-out:
-	return ret;
-}
-
-static int configfs_get_target_path(struct config_item * item, struct config_item * target,
-				   char *path)
-{
-	char * s;
-	int depth, size;
-
-	depth = item_depth(item);
-	size = item_path_length(target) + depth * 3 - 1;
-	if (size > PATH_MAX)
-		return -ENAMETOOLONG;
-
-	pr_debug("%s: depth = %d, size = %d\n", __func__, depth, size);
-
-	for (s = path; depth--; s += 3)
-		strcpy(s,"../");
-
-	fill_item_path(target, path, size);
-	pr_debug("%s: path = '%s'\n", __func__, path);
-
-	return 0;
-}
-
-static int configfs_getlink(struct dentry *dentry, char * path)
-{
-	struct config_item *item, *target_item;
-	int error = 0;
-
-	item = configfs_get_config_item(dentry->d_parent);
-	if (!item)
-		return -EINVAL;
-
-	target_item = configfs_get_config_item(dentry);
-	if (!target_item) {
-		config_item_put(item);
-		return -EINVAL;
-	}
-
-	down_read(&configfs_rename_sem);
-	error = configfs_get_target_path(item, target_item, path);
-	up_read(&configfs_rename_sem);
-
-	config_item_put(item);
-	config_item_put(target_item);
-	return error;
-
-}
-
-static void *configfs_follow_link(struct dentry *dentry, struct nameidata *nd)
-{
-	int error = -ENOMEM;
-	unsigned long page = get_zeroed_page(GFP_KERNEL);
-
-	if (page) {
-		error = configfs_getlink(dentry, (char *)page);
-		if (!error) {
-			nd_set_link(nd, (char *)page);
-			return (void *)page;
-		}
-	}
-
-	nd_set_link(nd, ERR_PTR(error));
-	return NULL;
-}
-
-static void configfs_put_link(struct dentry *dentry, struct nameidata *nd,
-			      void *cookie)
-{
-	if (cookie) {
-		unsigned long page = (unsigned long)cookie;
-		free_page(page);
-	}
-}
-
-const struct inode_operations configfs_symlink_inode_operations = {
-	.follow_link = configfs_follow_link,
-	.readlink = generic_readlink,
-	.put_link = configfs_put_link,
-	.setattr = configfs_setattr,
-};
-