diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/configfs/mount.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/configfs/mount.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/ANDROID_3.4.5/fs/configfs/mount.c b/ANDROID_3.4.5/fs/configfs/mount.c deleted file mode 100644 index aee0a7eb..00000000 --- a/ANDROID_3.4.5/fs/configfs/mount.c +++ /dev/null @@ -1,183 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * mount.c - operations for initializing and mounting configfs. - * - * 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/mount.h> -#include <linux/pagemap.h> -#include <linux/init.h> -#include <linux/slab.h> - -#include <linux/configfs.h> -#include "configfs_internal.h" - -/* Random magic number */ -#define CONFIGFS_MAGIC 0x62656570 - -static struct vfsmount *configfs_mount = NULL; -struct kmem_cache *configfs_dir_cachep; -static int configfs_mnt_count = 0; - -static const struct super_operations configfs_ops = { - .statfs = simple_statfs, - .drop_inode = generic_delete_inode, -}; - -static struct config_group configfs_root_group = { - .cg_item = { - .ci_namebuf = "root", - .ci_name = configfs_root_group.cg_item.ci_namebuf, - }, -}; - -int configfs_is_root(struct config_item *item) -{ - return item == &configfs_root_group.cg_item; -} - -static struct configfs_dirent configfs_root = { - .s_sibling = LIST_HEAD_INIT(configfs_root.s_sibling), - .s_children = LIST_HEAD_INIT(configfs_root.s_children), - .s_element = &configfs_root_group.cg_item, - .s_type = CONFIGFS_ROOT, - .s_iattr = NULL, -}; - -static int configfs_fill_super(struct super_block *sb, void *data, int silent) -{ - struct inode *inode; - struct dentry *root; - - sb->s_blocksize = PAGE_CACHE_SIZE; - sb->s_blocksize_bits = PAGE_CACHE_SHIFT; - sb->s_magic = CONFIGFS_MAGIC; - sb->s_op = &configfs_ops; - sb->s_time_gran = 1; - - inode = configfs_new_inode(S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, - &configfs_root, sb); - if (inode) { - inode->i_op = &configfs_root_inode_operations; - inode->i_fop = &configfs_dir_operations; - /* directory inodes start off with i_nlink == 2 (for "." entry) */ - inc_nlink(inode); - } else { - pr_debug("configfs: could not get root inode\n"); - return -ENOMEM; - } - - root = d_make_root(inode); - if (!root) { - pr_debug("%s: could not get root dentry!\n",__func__); - return -ENOMEM; - } - config_group_init(&configfs_root_group); - configfs_root_group.cg_item.ci_dentry = root; - root->d_fsdata = &configfs_root; - sb->s_root = root; - sb->s_d_op = &configfs_dentry_ops; /* the rest get that */ - return 0; -} - -static struct dentry *configfs_do_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) -{ - return mount_single(fs_type, flags, data, configfs_fill_super); -} - -static struct file_system_type configfs_fs_type = { - .owner = THIS_MODULE, - .name = "configfs", - .mount = configfs_do_mount, - .kill_sb = kill_litter_super, -}; - -struct dentry *configfs_pin_fs(void) -{ - int err = simple_pin_fs(&configfs_fs_type, &configfs_mount, - &configfs_mnt_count); - return err ? ERR_PTR(err) : configfs_mount->mnt_root; -} - -void configfs_release_fs(void) -{ - simple_release_fs(&configfs_mount, &configfs_mnt_count); -} - - -static struct kobject *config_kobj; - -static int __init configfs_init(void) -{ - int err = -ENOMEM; - - configfs_dir_cachep = kmem_cache_create("configfs_dir_cache", - sizeof(struct configfs_dirent), - 0, 0, NULL); - if (!configfs_dir_cachep) - goto out; - - config_kobj = kobject_create_and_add("config", kernel_kobj); - if (!config_kobj) - goto out2; - - err = configfs_inode_init(); - if (err) - goto out3; - - err = register_filesystem(&configfs_fs_type); - if (err) - goto out4; - - return 0; -out4: - printk(KERN_ERR "configfs: Unable to register filesystem!\n"); - configfs_inode_exit(); -out3: - kobject_put(config_kobj); -out2: - kmem_cache_destroy(configfs_dir_cachep); - configfs_dir_cachep = NULL; -out: - return err; -} - -static void __exit configfs_exit(void) -{ - unregister_filesystem(&configfs_fs_type); - kobject_put(config_kobj); - kmem_cache_destroy(configfs_dir_cachep); - configfs_dir_cachep = NULL; - configfs_inode_exit(); -} - -MODULE_AUTHOR("Oracle"); -MODULE_LICENSE("GPL"); -MODULE_VERSION("0.0.2"); -MODULE_DESCRIPTION("Simple RAM filesystem for user driven kernel subsystem configuration."); - -module_init(configfs_init); -module_exit(configfs_exit); |