1 /* SPDX-License-Identifier: GPL-2.0 */
5 * This stubs out the fscrypt functions for filesystems configured without
9 #ifndef _LINUX_FSCRYPT_NOTSUPP_H
10 #define _LINUX_FSCRYPT_NOTSUPP_H
12 #include <linux/fscrypt_common.h>
15 static inline struct fscrypt_ctx *fscrypt_get_ctx(const struct inode *inode,
18 return ERR_PTR(-EOPNOTSUPP);
21 static inline void fscrypt_release_ctx(struct fscrypt_ctx *ctx)
26 static inline struct page *fscrypt_encrypt_page(const struct inode *inode,
30 u64 lblk_num, gfp_t gfp_flags)
32 return ERR_PTR(-EOPNOTSUPP);
35 static inline int fscrypt_decrypt_page(const struct inode *inode,
37 unsigned int len, unsigned int offs,
44 static inline void fscrypt_restore_control_page(struct page *page)
49 static inline void fscrypt_set_d_op(struct dentry *dentry)
54 static inline void fscrypt_set_encrypted_dentry(struct dentry *dentry)
60 static inline int fscrypt_ioctl_set_policy(struct file *filp,
61 const void __user *arg)
66 static inline int fscrypt_ioctl_get_policy(struct file *filp, void __user *arg)
71 static inline int fscrypt_has_permitted_context(struct inode *parent,
77 static inline int fscrypt_inherit_context(struct inode *parent,
79 void *fs_data, bool preload)
85 static inline int fscrypt_get_encryption_info(struct inode *inode)
90 static inline void fscrypt_put_encryption_info(struct inode *inode,
91 struct fscrypt_info *ci)
97 static inline int fscrypt_setup_filename(struct inode *dir,
98 const struct qstr *iname,
99 int lookup, struct fscrypt_name *fname)
101 if (dir->i_sb->s_cop->is_encrypted(dir))
104 memset(fname, 0, sizeof(struct fscrypt_name));
105 fname->usr_fname = iname;
106 fname->disk_name.name = (unsigned char *)iname->name;
107 fname->disk_name.len = iname->len;
111 static inline void fscrypt_free_filename(struct fscrypt_name *fname)
116 static inline u32 fscrypt_fname_encrypted_size(const struct inode *inode,
124 static inline int fscrypt_fname_alloc_buffer(const struct inode *inode,
126 struct fscrypt_str *crypto_str)
131 static inline void fscrypt_fname_free_buffer(struct fscrypt_str *crypto_str)
136 static inline int fscrypt_fname_disk_to_usr(struct inode *inode,
137 u32 hash, u32 minor_hash,
138 const struct fscrypt_str *iname,
139 struct fscrypt_str *oname)
144 static inline int fscrypt_fname_usr_to_disk(struct inode *inode,
145 const struct qstr *iname,
146 struct fscrypt_str *oname)
151 static inline bool fscrypt_match_name(const struct fscrypt_name *fname,
152 const u8 *de_name, u32 de_name_len)
154 /* Encryption support disabled; use standard comparison */
155 if (de_name_len != fname->disk_name.len)
157 return !memcmp(de_name, fname->disk_name.name, fname->disk_name.len);
161 static inline void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *ctx,
167 static inline void fscrypt_pullback_bio_page(struct page **page, bool restore)
172 static inline int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk,
173 sector_t pblk, unsigned int len)
178 #endif /* _LINUX_FSCRYPT_NOTSUPP_H */