4 * This is included by filesystems configured with encryption support.
7 #ifndef _LINUX_FSCRYPT_SUPP_H
8 #define _LINUX_FSCRYPT_SUPP_H
10 #include <linux/fscrypt_common.h>
13 extern struct kmem_cache *fscrypt_info_cachep;
14 extern struct fscrypt_ctx *fscrypt_get_ctx(const struct inode *, gfp_t);
15 extern void fscrypt_release_ctx(struct fscrypt_ctx *);
16 extern struct page *fscrypt_encrypt_page(const struct inode *, struct page *,
17 unsigned int, unsigned int,
19 extern int fscrypt_decrypt_page(const struct inode *, struct page *, unsigned int,
21 extern void fscrypt_restore_control_page(struct page *);
23 extern const struct dentry_operations fscrypt_d_ops;
25 static inline void fscrypt_set_d_op(struct dentry *dentry)
27 d_set_d_op(dentry, &fscrypt_d_ops);
30 static inline void fscrypt_set_encrypted_dentry(struct dentry *dentry)
32 spin_lock(&dentry->d_lock);
33 dentry->d_flags |= DCACHE_ENCRYPTED_WITH_KEY;
34 spin_unlock(&dentry->d_lock);
38 extern int fscrypt_ioctl_set_policy(struct file *, const void __user *);
39 extern int fscrypt_ioctl_get_policy(struct file *, void __user *);
40 extern int fscrypt_has_permitted_context(struct inode *, struct inode *);
41 extern int fscrypt_inherit_context(struct inode *, struct inode *,
44 extern int fscrypt_get_encryption_info(struct inode *);
45 extern void fscrypt_put_encryption_info(struct inode *, struct fscrypt_info *);
48 extern int fscrypt_setup_filename(struct inode *, const struct qstr *,
49 int lookup, struct fscrypt_name *);
50 extern void fscrypt_free_filename(struct fscrypt_name *);
51 extern u32 fscrypt_fname_encrypted_size(const struct inode *, u32);
52 extern int fscrypt_fname_alloc_buffer(const struct inode *, u32,
53 struct fscrypt_str *);
54 extern void fscrypt_fname_free_buffer(struct fscrypt_str *);
55 extern int fscrypt_fname_disk_to_usr(struct inode *, u32, u32,
56 const struct fscrypt_str *, struct fscrypt_str *);
57 extern int fscrypt_fname_usr_to_disk(struct inode *, const struct qstr *,
58 struct fscrypt_str *);
61 extern void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *, struct bio *);
62 extern void fscrypt_pullback_bio_page(struct page **, bool);
63 extern int fscrypt_zeroout_range(const struct inode *, pgoff_t, sector_t,
66 #endif /* _LINUX_FSCRYPT_SUPP_H */