2 * fs/sysfs/sysfs.h - sysfs internal header file
4 * Copyright (c) 2001-3 Patrick Mochel
5 * Copyright (c) 2007 SUSE Linux Products GmbH
6 * Copyright (c) 2007 Tejun Heo <teheo@suse.de>
8 * This file is released under the GPLv2.
11 #ifndef __SYSFS_INTERNAL_H
12 #define __SYSFS_INTERNAL_H
14 #include "../kernfs/kernfs-internal.h"
15 #include <linux/sysfs.h>
22 * Each sb is associated with one namespace tag, currently the network
23 * namespace of the task which mounted this sysfs instance. If multiple
24 * tags become necessary, make the following an array and compare
25 * sysfs_dirent tag against every entry.
27 struct sysfs_super_info {
30 #define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info))
31 extern struct sysfs_dirent sysfs_root;
32 extern struct kmem_cache *sysfs_dir_cachep;
37 extern struct mutex sysfs_mutex;
38 extern spinlock_t sysfs_symlink_target_lock;
39 extern const struct dentry_operations sysfs_dentry_ops;
41 extern const struct file_operations sysfs_dir_operations;
42 extern const struct inode_operations sysfs_dir_inode_operations;
44 struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd);
45 void sysfs_put_active(struct sysfs_dirent *sd);
46 void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt);
47 void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name);
48 int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd,
49 struct sysfs_dirent *parent_sd);
50 void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt);
52 struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type);
57 struct inode *sysfs_get_inode(struct super_block *sb, struct sysfs_dirent *sd);
58 void sysfs_evict_inode(struct inode *inode);
59 int sysfs_permission(struct inode *inode, int mask);
60 int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
61 int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
63 int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
64 size_t size, int flags);
65 int sysfs_inode_init(void);
70 extern const struct file_operations kernfs_file_operations;
72 int sysfs_add_file(struct sysfs_dirent *dir_sd,
73 const struct attribute *attr, bool is_bin);
75 int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd,
76 const struct attribute *attr, bool is_bin,
77 umode_t amode, const void *ns);
78 void sysfs_unmap_bin_file(struct sysfs_dirent *sd);
83 extern const struct inode_operations sysfs_symlink_inode_operations;
84 int sysfs_create_link_sd(struct sysfs_dirent *sd, struct kobject *target,
87 #endif /* __SYSFS_INTERNAL_H */