]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/fscrypt_notsupp.h
1 /* SPDX-License-Identifier: GPL-2.0 */
5 * This stubs out the fscrypt functions for filesystems configured without
8 * Do not include this file directly. Use fscrypt.h instead!
10 #ifndef _LINUX_FSCRYPT_H
11 #error "Incorrect include of linux/fscrypt_notsupp.h!"
14 #ifndef _LINUX_FSCRYPT_NOTSUPP_H
15 #define _LINUX_FSCRYPT_NOTSUPP_H
18 static inline struct fscrypt_ctx
*fscrypt_get_ctx(const struct inode
*inode
,
21 return ERR_PTR(-EOPNOTSUPP
);
24 static inline void fscrypt_release_ctx(struct fscrypt_ctx
*ctx
)
29 static inline struct page
*fscrypt_encrypt_page(const struct inode
*inode
,
33 u64 lblk_num
, gfp_t gfp_flags
)
35 return ERR_PTR(-EOPNOTSUPP
);
38 static inline int fscrypt_decrypt_page(const struct inode
*inode
,
40 unsigned int len
, unsigned int offs
,
47 static inline void fscrypt_restore_control_page(struct page
*page
)
52 static inline void fscrypt_set_d_op(struct dentry
*dentry
)
57 static inline void fscrypt_set_encrypted_dentry(struct dentry
*dentry
)
63 static inline int fscrypt_ioctl_set_policy(struct file
*filp
,
64 const void __user
*arg
)
69 static inline int fscrypt_ioctl_get_policy(struct file
*filp
, void __user
*arg
)
74 static inline int fscrypt_has_permitted_context(struct inode
*parent
,
80 static inline int fscrypt_inherit_context(struct inode
*parent
,
82 void *fs_data
, bool preload
)
88 static inline int fscrypt_get_encryption_info(struct inode
*inode
)
93 static inline void fscrypt_put_encryption_info(struct inode
*inode
,
94 struct fscrypt_info
*ci
)
100 static inline int fscrypt_setup_filename(struct inode
*dir
,
101 const struct qstr
*iname
,
102 int lookup
, struct fscrypt_name
*fname
)
104 if (IS_ENCRYPTED(dir
))
107 memset(fname
, 0, sizeof(struct fscrypt_name
));
108 fname
->usr_fname
= iname
;
109 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
110 fname
->disk_name
.len
= iname
->len
;
114 static inline void fscrypt_free_filename(struct fscrypt_name
*fname
)
119 static inline u32
fscrypt_fname_encrypted_size(const struct inode
*inode
,
127 static inline int fscrypt_fname_alloc_buffer(const struct inode
*inode
,
129 struct fscrypt_str
*crypto_str
)
134 static inline void fscrypt_fname_free_buffer(struct fscrypt_str
*crypto_str
)
139 static inline int fscrypt_fname_disk_to_usr(struct inode
*inode
,
140 u32 hash
, u32 minor_hash
,
141 const struct fscrypt_str
*iname
,
142 struct fscrypt_str
*oname
)
147 static inline int fscrypt_fname_usr_to_disk(struct inode
*inode
,
148 const struct qstr
*iname
,
149 struct fscrypt_str
*oname
)
154 static inline bool fscrypt_match_name(const struct fscrypt_name
*fname
,
155 const u8
*de_name
, u32 de_name_len
)
157 /* Encryption support disabled; use standard comparison */
158 if (de_name_len
!= fname
->disk_name
.len
)
160 return !memcmp(de_name
, fname
->disk_name
.name
, fname
->disk_name
.len
);
164 static inline void fscrypt_decrypt_bio_pages(struct fscrypt_ctx
*ctx
,
170 static inline void fscrypt_pullback_bio_page(struct page
**page
, bool restore
)
175 static inline int fscrypt_zeroout_range(const struct inode
*inode
, pgoff_t lblk
,
176 sector_t pblk
, unsigned int len
)
183 static inline int fscrypt_file_open(struct inode
*inode
, struct file
*filp
)
185 if (IS_ENCRYPTED(inode
))
190 static inline int __fscrypt_prepare_link(struct inode
*inode
,
196 static inline int __fscrypt_prepare_rename(struct inode
*old_dir
,
197 struct dentry
*old_dentry
,
198 struct inode
*new_dir
,
199 struct dentry
*new_dentry
,
205 static inline int __fscrypt_prepare_lookup(struct inode
*dir
,
206 struct dentry
*dentry
)
211 #endif /* _LINUX_FSCRYPT_NOTSUPP_H */