46f47e4800
Previously, each filesystem configured without encryption support would define all the public fscrypt functions to their notsupp_* stubs. This list of #defines had to be updated in every filesystem whenever a change was made to the public fscrypt functions. To make things more maintainable now that we have three filesystems using fscrypt, split the old header fscrypto.h into several new headers. fscrypt_supp.h contains the real declarations and is included by filesystems when configured with encryption support, whereas fscrypt_notsupp.h contains the inline stubs and is included by filesystems when configured without encryption support. fscrypt_common.h contains common declarations needed by both. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*
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* fscrypt_supp.h
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*
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* This is included by filesystems configured with encryption support.
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*/
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#ifndef _LINUX_FSCRYPT_SUPP_H
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#define _LINUX_FSCRYPT_SUPP_H
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#include <linux/fscrypt_common.h>
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/* crypto.c */
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extern struct kmem_cache *fscrypt_info_cachep;
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extern struct fscrypt_ctx *fscrypt_get_ctx(const struct inode *, gfp_t);
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extern void fscrypt_release_ctx(struct fscrypt_ctx *);
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extern struct page *fscrypt_encrypt_page(const struct inode *, struct page *,
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unsigned int, unsigned int,
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u64, gfp_t);
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extern int fscrypt_decrypt_page(const struct inode *, struct page *, unsigned int,
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unsigned int, u64);
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extern void fscrypt_restore_control_page(struct page *);
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extern const struct dentry_operations fscrypt_d_ops;
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static inline void fscrypt_set_d_op(struct dentry *dentry)
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{
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d_set_d_op(dentry, &fscrypt_d_ops);
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}
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static inline void fscrypt_set_encrypted_dentry(struct dentry *dentry)
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{
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spin_lock(&dentry->d_lock);
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dentry->d_flags |= DCACHE_ENCRYPTED_WITH_KEY;
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spin_unlock(&dentry->d_lock);
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}
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/* policy.c */
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extern int fscrypt_ioctl_set_policy(struct file *, const void __user *);
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extern int fscrypt_ioctl_get_policy(struct file *, void __user *);
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extern int fscrypt_has_permitted_context(struct inode *, struct inode *);
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extern int fscrypt_inherit_context(struct inode *, struct inode *,
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void *, bool);
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/* keyinfo.c */
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extern int fscrypt_get_encryption_info(struct inode *);
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extern void fscrypt_put_encryption_info(struct inode *, struct fscrypt_info *);
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/* fname.c */
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extern int fscrypt_setup_filename(struct inode *, const struct qstr *,
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int lookup, struct fscrypt_name *);
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extern void fscrypt_free_filename(struct fscrypt_name *);
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extern u32 fscrypt_fname_encrypted_size(const struct inode *, u32);
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extern int fscrypt_fname_alloc_buffer(const struct inode *, u32,
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struct fscrypt_str *);
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extern void fscrypt_fname_free_buffer(struct fscrypt_str *);
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extern int fscrypt_fname_disk_to_usr(struct inode *, u32, u32,
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const struct fscrypt_str *, struct fscrypt_str *);
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extern int fscrypt_fname_usr_to_disk(struct inode *, const struct qstr *,
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struct fscrypt_str *);
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/* bio.c */
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extern void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *, struct bio *);
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extern void fscrypt_pullback_bio_page(struct page **, bool);
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extern int fscrypt_zeroout_range(const struct inode *, pgoff_t, sector_t,
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unsigned int);
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#endif /* _LINUX_FSCRYPT_SUPP_H */
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