Return-Path: Received: from mail.kernel.org ([198.145.29.99]:39324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725875AbeLDXMJ (ORCPT ); Tue, 4 Dec 2018 18:12:09 -0500 Date: Tue, 4 Dec 2018 15:12:05 -0800 From: Eric Biggers To: Chandan Rajendra Cc: linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-mips@linux-mips.org, linux-s390@vger.kernel.org, linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, jaegeuk@kernel.org, yuchao0@huawei.com, corbet@lwn.net, ralf@linux-mips.org, paul.burton@mips.com, jhogan@kernel.org, green.hu@gmail.com, deanbo422@gmail.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, richard@nod.at, dedekind1@gmail.com, adrian.hunter@intel.com, viro@zeniv.linux.org.uk Subject: Re: [PATCH V2 1/7] ext4: use IS_ENCRYPTED() to check encryption status Message-ID: <20181204231203.GA70682@gmail.com> References: <20181204095650.12562-1-chandan@linux.vnet.ibm.com> <20181204095650.12562-2-chandan@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181204095650.12562-2-chandan@linux.vnet.ibm.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Tue, Dec 04, 2018 at 03:26:44PM +0530, Chandan Rajendra wrote: > This commit removes the ext4 specific ext4_encrypted_inode() and makes > use of the generic IS_ENCRYPTED() macro to check for the encryption > status of an inode. > > Signed-off-by: Chandan Rajendra Reviewed-by: Eric Biggers Though if you send this out again, there are a few places where you can remove a line break while remaining within 80 characters, due to IS_ENCRYPTED() being shorter than ext4_encrypted_inode(). - Eric > --- > fs/ext4/dir.c | 8 ++++---- > fs/ext4/ext4.h | 5 ----- > fs/ext4/ext4_jbd2.h | 2 +- > fs/ext4/extents.c | 4 ++-- > fs/ext4/ialloc.c | 2 +- > fs/ext4/inode.c | 14 +++++++------- > fs/ext4/move_extent.c | 3 +-- > fs/ext4/namei.c | 8 ++++---- > fs/ext4/page-io.c | 2 +- > fs/ext4/readpage.c | 2 +- > 10 files changed, 22 insertions(+), 28 deletions(-) > > diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c > index f93f9881ec18..fb7a64ea5679 100644 > --- a/fs/ext4/dir.c > +++ b/fs/ext4/dir.c > @@ -111,7 +111,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) > int dir_has_error = 0; > struct fscrypt_str fstr = FSTR_INIT(NULL, 0); > > - if (ext4_encrypted_inode(inode)) { > + if (IS_ENCRYPTED(inode)) { > err = fscrypt_get_encryption_info(inode); > if (err && err != -ENOKEY) > return err; > @@ -138,7 +138,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) > return err; > } > > - if (ext4_encrypted_inode(inode)) { > + if (IS_ENCRYPTED(inode)) { > err = fscrypt_fname_alloc_buffer(inode, EXT4_NAME_LEN, &fstr); > if (err < 0) > return err; > @@ -245,7 +245,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) > offset += ext4_rec_len_from_disk(de->rec_len, > sb->s_blocksize); > if (le32_to_cpu(de->inode)) { > - if (!ext4_encrypted_inode(inode)) { > + if (!IS_ENCRYPTED(inode)) { > if (!dir_emit(ctx, de->name, > de->name_len, > le32_to_cpu(de->inode), > @@ -613,7 +613,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx) > > static int ext4_dir_open(struct inode * inode, struct file * filp) > { > - if (ext4_encrypted_inode(inode)) > + if (IS_ENCRYPTED(inode)) > return fscrypt_get_encryption_info(inode) ? -EACCES : 0; > return 0; > } > diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h > index 80957f9d3cbe..2ae6ab88f218 100644 > --- a/fs/ext4/ext4.h > +++ b/fs/ext4/ext4.h > @@ -2297,11 +2297,6 @@ extern unsigned ext4_free_clusters_after_init(struct super_block *sb, > struct ext4_group_desc *gdp); > ext4_fsblk_t ext4_inode_to_goal_block(struct inode *); > > -static inline bool ext4_encrypted_inode(struct inode *inode) > -{ > - return ext4_test_inode_flag(inode, EXT4_INODE_ENCRYPT); > -} > - > static inline bool ext4_verity_inode(struct inode *inode) > { > #ifdef CONFIG_EXT4_FS_VERITY > diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h > index 15b6dd733780..a1ac7e9245ec 100644 > --- a/fs/ext4/ext4_jbd2.h > +++ b/fs/ext4/ext4_jbd2.h > @@ -411,7 +411,7 @@ static inline int ext4_inode_journal_mode(struct inode *inode) > (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) && > !test_opt(inode->i_sb, DELALLOC))) { > /* We do not support data journalling for encrypted data */ > - if (S_ISREG(inode->i_mode) && ext4_encrypted_inode(inode)) > + if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode)) > return EXT4_INODE_ORDERED_DATA_MODE; /* ordered */ > return EXT4_INODE_JOURNAL_DATA_MODE; /* journal data */ > } > diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c > index 240b6dea5441..79d986dbf5af 100644 > --- a/fs/ext4/extents.c > +++ b/fs/ext4/extents.c > @@ -3631,7 +3631,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, > max_zeroout = sbi->s_extent_max_zeroout_kb >> > (inode->i_sb->s_blocksize_bits - 10); > > - if (ext4_encrypted_inode(inode)) > + if (IS_ENCRYPTED(inode)) > max_zeroout = 0; > > /* > @@ -4818,7 +4818,7 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) > * leave it disabled for encrypted inodes for now. This is a > * bug we should fix.... > */ > - if (ext4_encrypted_inode(inode) && > + if (IS_ENCRYPTED(inode) && > (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE | > FALLOC_FL_ZERO_RANGE))) > return -EOPNOTSUPP; > diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c > index 2addcb8730e1..3002f110eb4f 100644 > --- a/fs/ext4/ialloc.c > +++ b/fs/ext4/ialloc.c > @@ -771,7 +771,7 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, > if (unlikely(ext4_forced_shutdown(sbi))) > return ERR_PTR(-EIO); > > - if ((ext4_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) && > + if ((IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) && > (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) && > !(i_flags & EXT4_EA_INODE_FL)) { > err = fscrypt_get_encryption_info(dir); > diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c > index d7019f5dca6f..ef835bd46155 100644 > --- a/fs/ext4/inode.c > +++ b/fs/ext4/inode.c > @@ -415,7 +415,7 @@ int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk, ext4_fsblk_t pblk, > { > int ret; > > - if (ext4_encrypted_inode(inode)) > + if (IS_ENCRYPTED(inode)) > return fscrypt_zeroout_range(inode, lblk, pblk, len); > > ret = sb_issue_zeroout(inode->i_sb, pblk, len, GFP_NOFS); > @@ -1217,7 +1217,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len, > (block_start < from || block_end > to)) { > ll_rw_block(REQ_OP_READ, 0, 1, &bh); > *wait_bh++ = bh; > - decrypt = ext4_encrypted_inode(inode) && > + decrypt = IS_ENCRYPTED(inode) && > S_ISREG(inode->i_mode); > } > } > @@ -3880,7 +3880,7 @@ static ssize_t ext4_direct_IO(struct kiocb *iocb, struct iov_iter *iter) > ssize_t ret; > > #ifdef CONFIG_EXT4_FS_ENCRYPTION > - if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)) > + if (IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode)) > return 0; > #endif > > @@ -4068,7 +4068,7 @@ static int __ext4_block_zero_page_range(handle_t *handle, > if (!buffer_uptodate(bh)) > goto unlock; > if (S_ISREG(inode->i_mode) && > - ext4_encrypted_inode(inode)) { > + IS_ENCRYPTED(inode)) { > /* We expect the key to be set. */ > BUG_ON(!fscrypt_has_encryption_key(inode)); > BUG_ON(blocksize != PAGE_SIZE); > @@ -4144,7 +4144,7 @@ static int ext4_block_truncate_page(handle_t *handle, > struct inode *inode = mapping->host; > > /* If we are processing an encrypted inode during orphan list handling */ > - if (ext4_encrypted_inode(inode) && !fscrypt_has_encryption_key(inode)) > + if (IS_ENCRYPTED(inode) && !fscrypt_has_encryption_key(inode)) > return 0; > > blocksize = inode->i_sb->s_blocksize; > @@ -4724,7 +4724,7 @@ static bool ext4_should_use_dax(struct inode *inode) > return false; > if (ext4_has_inline_data(inode)) > return false; > - if (ext4_encrypted_inode(inode)) > + if (ext4_test_inode_flag(inode, EXT4_INODE_ENCRYPT)) > return false; > if (ext4_verity_inode(inode)) > return false; > @@ -5050,7 +5050,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) > ret = -EFSCORRUPTED; > goto bad_inode; > } > - if (ext4_encrypted_inode(inode)) { > + if (IS_ENCRYPTED(inode)) { > inode->i_op = &ext4_encrypted_symlink_inode_operations; > ext4_set_aops(inode); > } else if (ext4_inode_is_fast_symlink(inode)) { > diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c > index 2f5be02fc6f6..1083a9f3f16a 100644 > --- a/fs/ext4/move_extent.c > +++ b/fs/ext4/move_extent.c > @@ -592,8 +592,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk, > return -EOPNOTSUPP; > } > > - if (ext4_encrypted_inode(orig_inode) || > - ext4_encrypted_inode(donor_inode)) { > + if (IS_ENCRYPTED(orig_inode) || IS_ENCRYPTED(donor_inode)) { > ext4_msg(orig_inode->i_sb, KERN_ERR, > "Online defrag not supported for encrypted files"); > return -EOPNOTSUPP; > diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c > index 67a38532032a..0de60207a963 100644 > --- a/fs/ext4/namei.c > +++ b/fs/ext4/namei.c > @@ -620,7 +620,7 @@ static struct stats dx_show_leaf(struct inode *dir, > > name = de->name; > len = de->name_len; > - if (ext4_encrypted_inode(dir)) > + if (IS_ENCRYPTED(dir)) > res = fscrypt_get_encryption_info(dir); > if (res) { > printk(KERN_WARNING "Error setting up" > @@ -985,7 +985,7 @@ static int htree_dirblock_to_tree(struct file *dir_file, > EXT4_DIR_REC_LEN(0)); > #ifdef CONFIG_EXT4_FS_ENCRYPTION > /* Check if the directory is encrypted */ > - if (ext4_encrypted_inode(dir)) { > + if (IS_ENCRYPTED(dir)) { > err = fscrypt_get_encryption_info(dir); > if (err < 0) { > brelse(bh); > @@ -1014,7 +1014,7 @@ static int htree_dirblock_to_tree(struct file *dir_file, > continue; > if (de->inode == 0) > continue; > - if (!ext4_encrypted_inode(dir)) { > + if (!IS_ENCRYPTED(dir)) { > tmp_str.name = de->name; > tmp_str.len = de->name_len; > err = ext4_htree_store_dirent(dir_file, > @@ -1577,7 +1577,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi > ino); > return ERR_PTR(-EFSCORRUPTED); > } > - if (!IS_ERR(inode) && ext4_encrypted_inode(dir) && > + if (!IS_ERR(inode) && IS_ENCRYPTED(dir) && > (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && > !fscrypt_has_permitted_context(dir, inode)) { > ext4_warning(inode->i_sb, > diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c > index 2aa62d58d8dd..008c20b58f98 100644 > --- a/fs/ext4/page-io.c > +++ b/fs/ext4/page-io.c > @@ -477,7 +477,7 @@ int ext4_bio_write_page(struct ext4_io_submit *io, > > bh = head = page_buffers(page); > > - if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode) && > + if (IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode) && > nr_to_submit) { > gfp_t gfp_flags = GFP_NOFS; > > diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c > index d3dd1ff745db..45e707fb9749 100644 > --- a/fs/ext4/readpage.c > +++ b/fs/ext4/readpage.c > @@ -156,7 +156,7 @@ static struct bio_post_read_ctx *get_bio_post_read_ctx(struct inode *inode, > unsigned int post_read_steps = 0; > struct bio_post_read_ctx *ctx = NULL; > > - if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)) > + if (IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode)) > post_read_steps |= 1 << STEP_DECRYPT; > #ifdef CONFIG_EXT4_FS_VERITY > if (inode->i_verity_info != NULL && > -- > 2.19.1 >