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11#ifndef __KERNFS_INTERNAL_H
12#define __KERNFS_INTERNAL_H
13
14#include <linux/lockdep.h>
15#include <linux/fs.h>
16#include <linux/mutex.h>
17#include <linux/xattr.h>
18
19#include <linux/kernfs.h>
20
21struct kernfs_iattrs {
22 struct iattr ia_iattr;
23 void *ia_secdata;
24 u32 ia_secdata_len;
25
26 struct simple_xattrs xattrs;
27};
28
29
30#define KN_DEACTIVATED_BIAS (INT_MIN + 1)
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39
40static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
41{
42
43 if (kn->parent)
44 kn = kn->parent;
45 return kn->dir.root;
46}
47
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50
51struct kernfs_super_info {
52 struct super_block *sb;
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58 struct kernfs_root *root;
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65
66 const void *ns;
67
68
69 struct list_head node;
70};
71#define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info))
72
73extern const struct super_operations kernfs_sops;
74extern struct kmem_cache *kernfs_node_cache;
75
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79struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn);
80void kernfs_evict_inode(struct inode *inode);
81int kernfs_iop_permission(struct inode *inode, int mask);
82int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr);
83int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry,
84 struct kstat *stat);
85int kernfs_iop_setxattr(struct dentry *dentry, const char *name, const void *value,
86 size_t size, int flags);
87int kernfs_iop_removexattr(struct dentry *dentry, const char *name);
88ssize_t kernfs_iop_getxattr(struct dentry *dentry, const char *name, void *buf,
89 size_t size);
90ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size);
91
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94
95extern struct mutex kernfs_mutex;
96extern const struct dentry_operations kernfs_dops;
97extern const struct file_operations kernfs_dir_fops;
98extern const struct inode_operations kernfs_dir_iops;
99
100struct kernfs_node *kernfs_get_active(struct kernfs_node *kn);
101void kernfs_put_active(struct kernfs_node *kn);
102int kernfs_add_one(struct kernfs_node *kn);
103struct kernfs_node *kernfs_new_node(struct kernfs_node *parent,
104 const char *name, umode_t mode,
105 unsigned flags);
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110extern const struct file_operations kernfs_file_fops;
111
112void kernfs_unmap_bin_file(struct kernfs_node *kn);
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117extern const struct inode_operations kernfs_symlink_iops;
118
119#endif
120