diff options
Diffstat (limited to 'fs/sysfs/sysfs.h')
| -rw-r--r-- | fs/sysfs/sysfs.h | 139 |
1 files changed, 43 insertions, 96 deletions
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 3f8953e0e5d..0e2f1cccb81 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -1,96 +1,43 @@ - -extern struct vfsmount * sysfs_mount; -extern kmem_cache_t *sysfs_dir_cachep; - -extern struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent *); -extern int sysfs_create(struct dentry *, int mode, int (*init)(struct inode *)); - -extern int sysfs_make_dirent(struct sysfs_dirent *, struct dentry *, void *, - umode_t, int); - -extern int sysfs_add_file(struct dentry *, const struct attribute *, int); -extern void sysfs_hash_and_remove(struct dentry * dir, const char * name); - -extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **); -extern void sysfs_remove_subdir(struct dentry *); - -extern const unsigned char * sysfs_get_name(struct sysfs_dirent *sd); -extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent); -extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr); - -extern struct rw_semaphore sysfs_rename_sem; -extern struct super_block * sysfs_sb; -extern struct file_operations sysfs_dir_operations; -extern struct file_operations sysfs_file_operations; -extern struct file_operations bin_fops; -extern struct inode_operations sysfs_dir_inode_operations; -extern struct inode_operations sysfs_symlink_inode_operations; - -struct sysfs_symlink { - char * link_name; - struct kobject * target_kobj; -}; - -static inline struct kobject * to_kobj(struct dentry * dentry) -{ - struct sysfs_dirent * sd = dentry->d_fsdata; - return ((struct kobject *) sd->s_element); -} - -static inline struct attribute * to_attr(struct dentry * dentry) -{ - struct sysfs_dirent * sd = dentry->d_fsdata; - return ((struct attribute *) sd->s_element); -} - -static inline struct bin_attribute * to_bin_attr(struct dentry * dentry) -{ - struct sysfs_dirent * sd = dentry->d_fsdata; - return ((struct bin_attribute *) sd->s_element); -} - -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; - if (sd->s_type & SYSFS_KOBJ_LINK) { - struct sysfs_symlink * sl = sd->s_element; - kobj = kobject_get(sl->target_kobj); - } else - kobj = kobject_get(sd->s_element); - } - spin_unlock(&dcache_lock); - - return kobj; -} - -static inline void release_sysfs_dirent(struct sysfs_dirent * sd) -{ - if (sd->s_type & SYSFS_KOBJ_LINK) { - struct sysfs_symlink * sl = sd->s_element; - kfree(sl->link_name); - kobject_put(sl->target_kobj); - kfree(sl); - } - kfree(sd->s_iattr); - kmem_cache_free(sysfs_dir_cachep, sd); -} - -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) -{ - if (atomic_dec_and_test(&sd->s_count)) - release_sysfs_dirent(sd); -} - +/* + * fs/sysfs/sysfs.h - sysfs internal header file + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007 Tejun Heo <teheo@suse.de> + * + * This file is released under the GPLv2. + */ + +#ifndef __SYSFS_INTERNAL_H +#define __SYSFS_INTERNAL_H + +#include <linux/sysfs.h> + +/* + * mount.c + */ +extern struct kernfs_node *sysfs_root_kn; + +/* + * dir.c + */ +extern spinlock_t sysfs_symlink_target_lock; + +void sysfs_warn_dup(struct kernfs_node *parent, const char *name); + +/* + * file.c + */ +int sysfs_add_file(struct kernfs_node *parent, + const struct attribute *attr, bool is_bin); +int sysfs_add_file_mode_ns(struct kernfs_node *parent, + const struct attribute *attr, bool is_bin, + umode_t amode, const void *ns); + +/* + * symlink.c + */ +int sysfs_create_link_sd(struct kernfs_node *kn, struct kobject *target, + const char *name); + +#endif /* __SYSFS_INTERNAL_H */ |
