diff options
| -rw-r--r-- | fs/crypto/crypto.c | 11 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 4 | ||||
| -rw-r--r-- | fs/ext4/page-io.c | 3 | ||||
| -rw-r--r-- | fs/f2fs/data.c | 5 | ||||
| -rw-r--r-- | include/linux/fscrypto.h | 9 |
5 files changed, 19 insertions, 13 deletions
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c index f5c5e84ea9db..b6029785714c 100644 --- a/fs/crypto/crypto.c +++ b/fs/crypto/crypto.c @@ -218,6 +218,8 @@ static struct page *alloc_bounce_page(struct fscrypt_ctx *ctx, gfp_t gfp_flags) * @plaintext_page: The page to encrypt. Must be locked. * @plaintext_len: Length of plaintext within page * @plaintext_offset: Offset of plaintext within page + * @index: Index for encryption. This is mainly the page index, but + * but might be different for multiple calls on same page. * @gfp_flags: The gfp flag for memory allocation * * Encrypts plaintext_page using the ctx encryption context. If @@ -235,7 +237,7 @@ struct page *fscrypt_encrypt_page(const struct inode *inode, struct page *plaintext_page, unsigned int plaintext_len, unsigned int plaintext_offset, - gfp_t gfp_flags) + pgoff_t index, gfp_t gfp_flags) { struct fscrypt_ctx *ctx; @@ -256,7 +258,7 @@ struct page *fscrypt_encrypt_page(const struct inode *inode, } ctx->w.control_page = plaintext_page; - err = do_page_crypto(inode, FS_ENCRYPT, plaintext_page->index, + err = do_page_crypto(inode, FS_ENCRYPT, index, plaintext_page, ciphertext_page, plaintext_len, plaintext_offset, gfp_flags); @@ -283,6 +285,7 @@ EXPORT_SYMBOL(fscrypt_encrypt_page); * @page: The page to decrypt. Must be locked. * @len: Number of bytes in @page to be decrypted. * @offs: Start of data in @page. + * @index: Index for encryption. * * Decrypts page in-place using the ctx encryption context. * @@ -291,7 +294,7 @@ EXPORT_SYMBOL(fscrypt_encrypt_page); * Return: Zero on success, non-zero otherwise. */ int fscrypt_decrypt_page(const struct inode *inode, struct page *page, - unsigned int len, unsigned int offs) + unsigned int len, unsigned int offs, pgoff_t index) { return do_page_crypto(inode, FS_DECRYPT, page->index, page, page, len, offs, GFP_NOFS); @@ -430,7 +433,7 @@ static void completion_pages(struct work_struct *work) bio_for_each_segment_all(bv, bio, i) { struct page *page = bv->bv_page; int ret = fscrypt_decrypt_page(page->mapping->host, page, - PAGE_SIZE, 0); + PAGE_SIZE, 0, page->index); if (ret) { WARN_ON_ONCE(1); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 1d498c5e2990..1485ac273bfb 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1167,7 +1167,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len, page_zero_new_buffers(page, from, to); else if (decrypt) err = fscrypt_decrypt_page(page->mapping->host, page, - PAGE_SIZE, 0); + PAGE_SIZE, 0, page->index); return err; } #endif @@ -3746,7 +3746,7 @@ static int __ext4_block_zero_page_range(handle_t *handle, BUG_ON(blocksize != PAGE_SIZE); BUG_ON(!PageLocked(page)); WARN_ON_ONCE(fscrypt_decrypt_page(page->mapping->host, - page, PAGE_SIZE, 0)); + page, PAGE_SIZE, 0, page->index)); } } if (ext4_should_journal_data(inode)) { diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 3d1d3d0f4303..902a3e3059b3 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -470,7 +470,8 @@ int ext4_bio_write_page(struct ext4_io_submit *io, gfp_t gfp_flags = GFP_NOFS; retry_encrypt: - data_page = fscrypt_encrypt_page(inode, page, PAGE_SIZE, 0, gfp_flags); + data_page = fscrypt_encrypt_page(inode, page, PAGE_SIZE, 0, + page->index, gfp_flags); if (IS_ERR(data_page)) { ret = PTR_ERR(data_page); if (ret == -ENOMEM && wbc->sync_mode == WB_SYNC_ALL) { diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index fac207254e8d..435590c4b341 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1196,8 +1196,9 @@ int do_write_data_page(struct f2fs_io_info *fio) retry_encrypt: BUG_ON(!PageLocked(fio->page)); fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page, - PAGE_SIZE, 0, - gfp_flags); + PAGE_SIZE, 0, + fio->page->index, + gfp_flags); if (IS_ERR(fio->encrypted_page)) { err = PTR_ERR(fio->encrypted_page); if (err == -ENOMEM) { diff --git a/include/linux/fscrypto.h b/include/linux/fscrypto.h index e9be944a324c..98c71e973a96 100644 --- a/include/linux/fscrypto.h +++ b/include/linux/fscrypto.h @@ -250,9 +250,9 @@ extern struct fscrypt_ctx *fscrypt_get_ctx(const struct inode *, gfp_t); extern void fscrypt_release_ctx(struct fscrypt_ctx *); extern struct page *fscrypt_encrypt_page(const struct inode *, struct page *, unsigned int, unsigned int, - gfp_t); + pgoff_t, gfp_t); extern int fscrypt_decrypt_page(const struct inode *, struct page *, unsigned int, - unsigned int); + unsigned int, pgoff_t); extern void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *, struct bio *); extern void fscrypt_pullback_bio_page(struct page **, bool); extern void fscrypt_restore_control_page(struct page *); @@ -299,13 +299,14 @@ static inline struct page *fscrypt_notsupp_encrypt_page(const struct inode *i, struct page *p, unsigned int len, unsigned int offs, - gfp_t f) + pgoff_t index, gfp_t f) { return ERR_PTR(-EOPNOTSUPP); } static inline int fscrypt_notsupp_decrypt_page(const struct inode *i, struct page *p, - unsigned int len, unsigned int offs) + unsigned int len, unsigned int offs, + pgoff_t index) { return -EOPNOTSUPP; } |