2007-06-14 01:45:15 +07:00
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struct sysfs_elem_dir {
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struct kobject * kobj;
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};
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struct sysfs_elem_symlink {
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2007-06-14 01:45:15 +07:00
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struct sysfs_dirent * target_sd;
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2007-06-14 01:45:15 +07:00
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};
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struct sysfs_elem_attr {
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struct attribute * attr;
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};
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struct sysfs_elem_bin_attr {
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struct bin_attribute * bin_attr;
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};
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2007-02-16 20:35:25 +07:00
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struct sysfs_dirent {
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atomic_t s_count;
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2007-06-14 01:45:14 +07:00
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struct sysfs_dirent * s_parent;
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2007-02-16 20:35:25 +07:00
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struct list_head s_sibling;
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struct list_head s_children;
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2007-06-14 01:45:15 +07:00
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const char * s_name;
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2007-06-14 01:45:15 +07:00
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union {
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|
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struct sysfs_elem_dir dir;
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struct sysfs_elem_symlink symlink;
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struct sysfs_elem_attr attr;
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struct sysfs_elem_bin_attr bin_attr;
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} s_elem;
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2007-02-16 20:35:25 +07:00
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int s_type;
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umode_t s_mode;
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2007-06-11 12:02:45 +07:00
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ino_t s_ino;
|
2007-02-16 20:35:25 +07:00
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struct dentry * s_dentry;
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struct iattr * s_iattr;
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atomic_t s_event;
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};
|
2005-04-17 05:20:36 +07:00
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extern struct vfsmount * sysfs_mount;
|
2006-12-07 11:33:20 +07:00
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extern struct kmem_cache *sysfs_dir_cachep;
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2005-04-17 05:20:36 +07:00
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|
2007-01-25 02:35:52 +07:00
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extern void sysfs_delete_inode(struct inode *inode);
|
2005-05-31 12:09:52 +07:00
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extern struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent *);
|
2005-04-17 05:20:36 +07:00
|
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extern int sysfs_create(struct dentry *, int mode, int (*init)(struct inode *));
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|
2007-06-14 01:45:13 +07:00
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extern void release_sysfs_dirent(struct sysfs_dirent * sd);
|
2006-03-09 21:10:14 +07:00
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|
extern int sysfs_dirent_exist(struct sysfs_dirent *, const unsigned char *);
|
2007-06-14 01:45:15 +07:00
|
|
|
extern struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode,
|
|
|
|
int type);
|
2007-06-14 01:45:14 +07:00
|
|
|
extern void sysfs_attach_dirent(struct sysfs_dirent *sd,
|
|
|
|
struct sysfs_dirent *parent_sd,
|
|
|
|
struct dentry *dentry);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
|
2006-07-11 13:05:25 +07:00
|
|
|
extern int sysfs_hash_and_remove(struct dentry * dir, const char * name);
|
2006-03-20 13:53:53 +07:00
|
|
|
extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
|
|
|
|
extern void sysfs_remove_subdir(struct dentry *);
|
|
|
|
|
|
|
|
extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent);
|
2005-05-31 12:09:14 +07:00
|
|
|
extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2007-06-11 12:04:01 +07:00
|
|
|
extern spinlock_t sysfs_lock;
|
2007-06-14 01:45:15 +07:00
|
|
|
extern spinlock_t kobj_sysfs_assoc_lock;
|
2005-04-17 05:20:36 +07:00
|
|
|
extern struct rw_semaphore sysfs_rename_sem;
|
|
|
|
extern struct super_block * sysfs_sb;
|
2006-03-28 16:56:42 +07:00
|
|
|
extern const struct file_operations sysfs_dir_operations;
|
|
|
|
extern const struct file_operations sysfs_file_operations;
|
|
|
|
extern const struct file_operations bin_fops;
|
2007-02-12 15:55:40 +07:00
|
|
|
extern const struct inode_operations sysfs_dir_inode_operations;
|
|
|
|
extern const struct inode_operations sysfs_symlink_inode_operations;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-12-20 16:52:44 +07:00
|
|
|
struct sysfs_buffer {
|
|
|
|
struct list_head associates;
|
|
|
|
size_t count;
|
|
|
|
loff_t pos;
|
|
|
|
char * page;
|
|
|
|
struct sysfs_ops * ops;
|
|
|
|
struct semaphore sem;
|
|
|
|
int orphaned;
|
|
|
|
int needs_read_fill;
|
|
|
|
int event;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct sysfs_buffer_collection {
|
|
|
|
struct list_head associates;
|
|
|
|
};
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
static inline struct kobject * to_kobj(struct dentry * dentry)
|
|
|
|
{
|
|
|
|
struct sysfs_dirent * sd = dentry->d_fsdata;
|
2007-06-14 01:45:15 +07:00
|
|
|
return sd->s_elem.dir.kobj;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct kobject *sysfs_get_kobject(struct dentry *dentry)
|
|
|
|
{
|
|
|
|
struct kobject * kobj = NULL;
|
|
|
|
|
|
|
|
spin_lock(&dcache_lock);
|
|
|
|
if (!d_unhashed(dentry)) {
|
|
|
|
struct sysfs_dirent * sd = dentry->d_fsdata;
|
2007-06-14 01:45:15 +07:00
|
|
|
|
2007-06-14 01:45:15 +07:00
|
|
|
if (sd->s_type & SYSFS_KOBJ_LINK)
|
2007-06-14 01:45:15 +07:00
|
|
|
sd = sd->s_elem.symlink.target_sd;
|
|
|
|
|
|
|
|
kobj = kobject_get(sd->s_elem.dir.kobj);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
spin_unlock(&dcache_lock);
|
|
|
|
|
|
|
|
return kobj;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct sysfs_dirent * sysfs_get(struct sysfs_dirent * sd)
|
|
|
|
{
|
|
|
|
if (sd) {
|
|
|
|
WARN_ON(!atomic_read(&sd->s_count));
|
|
|
|
atomic_inc(&sd->s_count);
|
|
|
|
}
|
|
|
|
return sd;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void sysfs_put(struct sysfs_dirent * sd)
|
|
|
|
{
|
2007-06-14 01:45:13 +07:00
|
|
|
if (sd && atomic_dec_and_test(&sd->s_count))
|
2005-04-17 05:20:36 +07:00
|
|
|
release_sysfs_dirent(sd);
|
|
|
|
}
|
|
|
|
|
2007-01-25 02:35:52 +07:00
|
|
|
static inline int sysfs_is_shadowed_inode(struct inode *inode)
|
|
|
|
{
|
|
|
|
return S_ISDIR(inode->i_mode) && inode->i_op->follow_link;
|
|
|
|
}
|