3 struct list_head s_sibling;
4 struct list_head s_children;
9 struct dentry * s_dentry;
10 struct iattr * s_iattr;
14 extern struct vfsmount * sysfs_mount;
15 extern struct kmem_cache *sysfs_dir_cachep;
17 extern void sysfs_delete_inode(struct inode *inode);
18 extern struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent *);
19 extern int sysfs_create(struct dentry *, int mode, int (*init)(struct inode *));
21 extern void release_sysfs_dirent(struct sysfs_dirent * sd);
22 extern int sysfs_dirent_exist(struct sysfs_dirent *, const unsigned char *);
23 extern struct sysfs_dirent *sysfs_new_dirent(void *element, umode_t mode,
25 extern void sysfs_attach_dirent(struct sysfs_dirent *sd,
26 struct sysfs_dirent *parent_sd,
27 struct dentry *dentry);
29 extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
30 extern int sysfs_hash_and_remove(struct dentry * dir, const char * name);
31 extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name);
33 extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
34 extern void sysfs_remove_subdir(struct dentry *);
36 extern const unsigned char * sysfs_get_name(struct sysfs_dirent *sd);
37 extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent);
38 extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
40 extern spinlock_t sysfs_lock;
41 extern struct rw_semaphore sysfs_rename_sem;
42 extern struct super_block * sysfs_sb;
43 extern const struct file_operations sysfs_dir_operations;
44 extern const struct file_operations sysfs_file_operations;
45 extern const struct file_operations bin_fops;
46 extern const struct inode_operations sysfs_dir_inode_operations;
47 extern const struct inode_operations sysfs_symlink_inode_operations;
49 struct sysfs_symlink {
51 struct kobject * target_kobj;
55 struct list_head associates;
59 struct sysfs_ops * ops;
66 struct sysfs_buffer_collection {
67 struct list_head associates;
70 static inline struct kobject * to_kobj(struct dentry * dentry)
72 struct sysfs_dirent * sd = dentry->d_fsdata;
73 return ((struct kobject *) sd->s_element);
76 static inline struct attribute * to_attr(struct dentry * dentry)
78 struct sysfs_dirent * sd = dentry->d_fsdata;
79 return ((struct attribute *) sd->s_element);
82 static inline struct bin_attribute * to_bin_attr(struct dentry * dentry)
84 struct sysfs_dirent * sd = dentry->d_fsdata;
85 return ((struct bin_attribute *) sd->s_element);
88 static inline struct kobject *sysfs_get_kobject(struct dentry *dentry)
90 struct kobject * kobj = NULL;
92 spin_lock(&dcache_lock);
93 if (!d_unhashed(dentry)) {
94 struct sysfs_dirent * sd = dentry->d_fsdata;
95 if (sd->s_type & SYSFS_KOBJ_LINK) {
96 struct sysfs_symlink * sl = sd->s_element;
97 kobj = kobject_get(sl->target_kobj);
99 kobj = kobject_get(sd->s_element);
101 spin_unlock(&dcache_lock);
106 static inline struct sysfs_dirent * sysfs_get(struct sysfs_dirent * sd)
109 WARN_ON(!atomic_read(&sd->s_count));
110 atomic_inc(&sd->s_count);
115 static inline void sysfs_put(struct sysfs_dirent * sd)
117 if (sd && atomic_dec_and_test(&sd->s_count))
118 release_sysfs_dirent(sd);
121 static inline int sysfs_is_shadowed_inode(struct inode *inode)
123 return S_ISDIR(inode->i_mode) && inode->i_op->follow_link;