From 07543d164ba79e34c61f0f8aeb4af9cd86c88d2c Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Wed, 18 Oct 2017 20:21:57 -0400 Subject: [PATCH] ext4: switch to fscrypt_prepare_rename() Signed-off-by: Eric Biggers Signed-off-by: Theodore Ts'o --- fs/ext4/namei.c | 33 +++++++-------------------------- 1 file changed, 7 insertions(+), 26 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index b2058500f1dc..b2fbc2b87bcf 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3516,12 +3516,6 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, EXT4_I(old_dentry->d_inode)->i_projid))) return -EXDEV; - if ((ext4_encrypted_inode(old_dir) && - !fscrypt_has_encryption_key(old_dir)) || - (ext4_encrypted_inode(new_dir) && - !fscrypt_has_encryption_key(new_dir))) - return -ENOKEY; - retval = dquot_initialize(old.dir); if (retval) return retval; @@ -3550,13 +3544,6 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (!old.bh || le32_to_cpu(old.de->inode) != old.inode->i_ino) goto end_rename; - if ((old.dir != new.dir) && - ext4_encrypted_inode(new.dir) && - !fscrypt_has_permitted_context(new.dir, old.inode)) { - retval = -EPERM; - goto end_rename; - } - new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, &new.de, &new.inlined); if (IS_ERR(new.bh)) { @@ -3722,19 +3709,6 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, int retval; struct timespec ctime; - if ((ext4_encrypted_inode(old_dir) && - !fscrypt_has_encryption_key(old_dir)) || - (ext4_encrypted_inode(new_dir) && - !fscrypt_has_encryption_key(new_dir))) - return -ENOKEY; - - if ((ext4_encrypted_inode(old_dir) || - ext4_encrypted_inode(new_dir)) && - (old_dir != new_dir) && - (!fscrypt_has_permitted_context(new_dir, old.inode) || - !fscrypt_has_permitted_context(old_dir, new.inode))) - return -EPERM; - if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT) && !projid_eq(EXT4_I(new_dir)->i_projid, EXT4_I(old_dentry->d_inode)->i_projid)) || @@ -3861,12 +3835,19 @@ static int ext4_rename2(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { + int err; + if (unlikely(ext4_forced_shutdown(EXT4_SB(old_dir->i_sb)))) return -EIO; if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) return -EINVAL; + err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, + flags); + if (err) + return err; + if (flags & RENAME_EXCHANGE) { return ext4_cross_rename(old_dir, old_dentry, new_dir, new_dentry);