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 int sysfs_dirent_exist(struct sysfs_dirent *, const unsigned char *);
22 extern int sysfs_make_dirent(struct sysfs_dirent *, struct dentry *, void *,
25 extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
26 extern int sysfs_hash_and_remove(struct dentry * dir, const char * name);
27 extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name);
29 extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
30 extern void sysfs_remove_subdir(struct dentry *);
32 extern const unsigned char * sysfs_get_name(struct sysfs_dirent *sd);
33 extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent);
34 extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
36 extern struct rw_semaphore sysfs_rename_sem;
37 extern struct super_block * sysfs_sb;
38 extern const struct file_operations sysfs_dir_operations;
39 extern const struct file_operations sysfs_file_operations;
40 extern const struct file_operations bin_fops;
41 extern const struct inode_operations sysfs_dir_inode_operations;
42 extern const struct inode_operations sysfs_symlink_inode_operations;
44 struct sysfs_symlink {
46 struct kobject * target_kobj;
50 struct list_head associates;
54 struct sysfs_ops * ops;
61 struct sysfs_buffer_collection {
62 struct list_head associates;
65 static inline struct kobject * to_kobj(struct dentry * dentry)
67 struct sysfs_dirent * sd = dentry->d_fsdata;
68 return ((struct kobject *) sd->s_element);
71 static inline struct attribute * to_attr(struct dentry * dentry)
73 struct sysfs_dirent * sd = dentry->d_fsdata;
74 return ((struct attribute *) sd->s_element);
77 static inline struct bin_attribute * to_bin_attr(struct dentry * dentry)
79 struct sysfs_dirent * sd = dentry->d_fsdata;
80 return ((struct bin_attribute *) sd->s_element);
83 static inline struct kobject *sysfs_get_kobject(struct dentry *dentry)
85 struct kobject * kobj = NULL;
87 spin_lock(&dcache_lock);
88 if (!d_unhashed(dentry)) {
89 struct sysfs_dirent * sd = dentry->d_fsdata;
90 if (sd->s_type & SYSFS_KOBJ_LINK) {
91 struct sysfs_symlink * sl = sd->s_element;
92 kobj = kobject_get(sl->target_kobj);
94 kobj = kobject_get(sd->s_element);
96 spin_unlock(&dcache_lock);
101 static inline void release_sysfs_dirent(struct sysfs_dirent * sd)
103 if (sd->s_type & SYSFS_KOBJ_LINK) {
104 struct sysfs_symlink * sl = sd->s_element;
105 kfree(sl->link_name);
106 kobject_put(sl->target_kobj);
110 kmem_cache_free(sysfs_dir_cachep, sd);
113 static inline struct sysfs_dirent * sysfs_get(struct sysfs_dirent * sd)
116 WARN_ON(!atomic_read(&sd->s_count));
117 atomic_inc(&sd->s_count);
122 static inline void sysfs_put(struct sysfs_dirent * sd)
124 if (atomic_dec_and_test(&sd->s_count))
125 release_sysfs_dirent(sd);
128 static inline int sysfs_is_shadowed_inode(struct inode *inode)
130 return S_ISDIR(inode->i_mode) && inode->i_op->follow_link;