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From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-mtd@lists.infradead.org, ceph-devel@vger.kernel.org,
	Jeff Layton <jlayton@kernel.org>,
	Daniel Rosenberg <drosen@google.com>
Subject: [PATCH v2 05/11] ubifs: use fscrypt_prepare_new_inode() and fscrypt_set_context()
Date: Sun, 13 Sep 2020 01:36:14 -0700	[thread overview]
Message-ID: <20200913083620.170627-6-ebiggers@kernel.org> (raw)
In-Reply-To: <20200913083620.170627-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

Convert ubifs to use the new functions fscrypt_prepare_new_inode() and
fscrypt_set_context().

Unlike ext4 and f2fs, this doesn't appear to fix any deadlock bug.  But
it does shorten the code slightly and get all filesystems using the same
helper functions, so that fscrypt_inherit_context() can be removed.

It also fixes an incorrect error code where ubifs returned EPERM instead
of the expected ENOKEY.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/ubifs/dir.c | 38 ++++++++++++++++----------------------
 1 file changed, 16 insertions(+), 22 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index a9c1f5a9c9bdd..155521e51ac57 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -81,19 +81,6 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	struct ubifs_inode *ui;
 	bool encrypted = false;
 
-	if (IS_ENCRYPTED(dir)) {
-		err = fscrypt_get_encryption_info(dir);
-		if (err) {
-			ubifs_err(c, "fscrypt_get_encryption_info failed: %i", err);
-			return ERR_PTR(err);
-		}
-
-		if (!fscrypt_has_encryption_key(dir))
-			return ERR_PTR(-EPERM);
-
-		encrypted = true;
-	}
-
 	inode = new_inode(c->vfs_sb);
 	ui = ubifs_inode(inode);
 	if (!inode)
@@ -112,6 +99,12 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 			 current_time(inode);
 	inode->i_mapping->nrpages = 0;
 
+	err = fscrypt_prepare_new_inode(dir, inode, &encrypted);
+	if (err) {
+		ubifs_err(c, "fscrypt_prepare_new_inode failed: %i", err);
+		goto out_iput;
+	}
+
 	switch (mode & S_IFMT) {
 	case S_IFREG:
 		inode->i_mapping->a_ops = &ubifs_file_address_operations;
@@ -131,7 +124,6 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	case S_IFBLK:
 	case S_IFCHR:
 		inode->i_op  = &ubifs_file_inode_operations;
-		encrypted = false;
 		break;
 	default:
 		BUG();
@@ -151,9 +143,8 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 		if (c->highest_inum >= INUM_WATERMARK) {
 			spin_unlock(&c->cnt_lock);
 			ubifs_err(c, "out of inode numbers");
-			make_bad_inode(inode);
-			iput(inode);
-			return ERR_PTR(-EINVAL);
+			err = -EINVAL;
+			goto out_iput;
 		}
 		ubifs_warn(c, "running out of inode numbers (current %lu, max %u)",
 			   (unsigned long)c->highest_inum, INUM_WATERMARK);
@@ -171,16 +162,19 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	spin_unlock(&c->cnt_lock);
 
 	if (encrypted) {
-		err = fscrypt_inherit_context(dir, inode, &encrypted, true);
+		err = fscrypt_set_context(inode, NULL);
 		if (err) {
-			ubifs_err(c, "fscrypt_inherit_context failed: %i", err);
-			make_bad_inode(inode);
-			iput(inode);
-			return ERR_PTR(err);
+			ubifs_err(c, "fscrypt_set_context failed: %i", err);
+			goto out_iput;
 		}
 	}
 
 	return inode;
+
+out_iput:
+	make_bad_inode(inode);
+	iput(inode);
+	return ERR_PTR(err);
 }
 
 static int dbg_check_name(const struct ubifs_info *c,
-- 
2.28.0


WARNING: multiple messages have this Message-ID
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: Daniel Rosenberg <drosen@google.com>,
	Jeff Layton <jlayton@kernel.org>,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-mtd@lists.infradead.org, ceph-devel@vger.kernel.org,
	linux-ext4@vger.kernel.org
Subject: [f2fs-dev] [PATCH v2 05/11] ubifs: use fscrypt_prepare_new_inode() and fscrypt_set_context()
Date: Sun, 13 Sep 2020 01:36:14 -0700	[thread overview]
Message-ID: <20200913083620.170627-6-ebiggers@kernel.org> (raw)
In-Reply-To: <20200913083620.170627-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

Convert ubifs to use the new functions fscrypt_prepare_new_inode() and
fscrypt_set_context().

Unlike ext4 and f2fs, this doesn't appear to fix any deadlock bug.  But
it does shorten the code slightly and get all filesystems using the same
helper functions, so that fscrypt_inherit_context() can be removed.

It also fixes an incorrect error code where ubifs returned EPERM instead
of the expected ENOKEY.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/ubifs/dir.c | 38 ++++++++++++++++----------------------
 1 file changed, 16 insertions(+), 22 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index a9c1f5a9c9bdd..155521e51ac57 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -81,19 +81,6 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	struct ubifs_inode *ui;
 	bool encrypted = false;
 
-	if (IS_ENCRYPTED(dir)) {
-		err = fscrypt_get_encryption_info(dir);
-		if (err) {
-			ubifs_err(c, "fscrypt_get_encryption_info failed: %i", err);
-			return ERR_PTR(err);
-		}
-
-		if (!fscrypt_has_encryption_key(dir))
-			return ERR_PTR(-EPERM);
-
-		encrypted = true;
-	}
-
 	inode = new_inode(c->vfs_sb);
 	ui = ubifs_inode(inode);
 	if (!inode)
@@ -112,6 +99,12 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 			 current_time(inode);
 	inode->i_mapping->nrpages = 0;
 
+	err = fscrypt_prepare_new_inode(dir, inode, &encrypted);
+	if (err) {
+		ubifs_err(c, "fscrypt_prepare_new_inode failed: %i", err);
+		goto out_iput;
+	}
+
 	switch (mode & S_IFMT) {
 	case S_IFREG:
 		inode->i_mapping->a_ops = &ubifs_file_address_operations;
@@ -131,7 +124,6 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	case S_IFBLK:
 	case S_IFCHR:
 		inode->i_op  = &ubifs_file_inode_operations;
-		encrypted = false;
 		break;
 	default:
 		BUG();
@@ -151,9 +143,8 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 		if (c->highest_inum >= INUM_WATERMARK) {
 			spin_unlock(&c->cnt_lock);
 			ubifs_err(c, "out of inode numbers");
-			make_bad_inode(inode);
-			iput(inode);
-			return ERR_PTR(-EINVAL);
+			err = -EINVAL;
+			goto out_iput;
 		}
 		ubifs_warn(c, "running out of inode numbers (current %lu, max %u)",
 			   (unsigned long)c->highest_inum, INUM_WATERMARK);
@@ -171,16 +162,19 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	spin_unlock(&c->cnt_lock);
 
 	if (encrypted) {
-		err = fscrypt_inherit_context(dir, inode, &encrypted, true);
+		err = fscrypt_set_context(inode, NULL);
 		if (err) {
-			ubifs_err(c, "fscrypt_inherit_context failed: %i", err);
-			make_bad_inode(inode);
-			iput(inode);
-			return ERR_PTR(err);
+			ubifs_err(c, "fscrypt_set_context failed: %i", err);
+			goto out_iput;
 		}
 	}
 
 	return inode;
+
+out_iput:
+	make_bad_inode(inode);
+	iput(inode);
+	return ERR_PTR(err);
 }
 
 static int dbg_check_name(const struct ubifs_info *c,
-- 
2.28.0



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

WARNING: multiple messages have this Message-ID
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: Daniel Rosenberg <drosen@google.com>,
	Jeff Layton <jlayton@kernel.org>,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-mtd@lists.infradead.org, ceph-devel@vger.kernel.org,
	linux-ext4@vger.kernel.org
Subject: [PATCH v2 05/11] ubifs: use fscrypt_prepare_new_inode() and fscrypt_set_context()
Date: Sun, 13 Sep 2020 01:36:14 -0700	[thread overview]
Message-ID: <20200913083620.170627-6-ebiggers@kernel.org> (raw)
In-Reply-To: <20200913083620.170627-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

Convert ubifs to use the new functions fscrypt_prepare_new_inode() and
fscrypt_set_context().

Unlike ext4 and f2fs, this doesn't appear to fix any deadlock bug.  But
it does shorten the code slightly and get all filesystems using the same
helper functions, so that fscrypt_inherit_context() can be removed.

It also fixes an incorrect error code where ubifs returned EPERM instead
of the expected ENOKEY.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/ubifs/dir.c | 38 ++++++++++++++++----------------------
 1 file changed, 16 insertions(+), 22 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index a9c1f5a9c9bdd..155521e51ac57 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -81,19 +81,6 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	struct ubifs_inode *ui;
 	bool encrypted = false;
 
-	if (IS_ENCRYPTED(dir)) {
-		err = fscrypt_get_encryption_info(dir);
-		if (err) {
-			ubifs_err(c, "fscrypt_get_encryption_info failed: %i", err);
-			return ERR_PTR(err);
-		}
-
-		if (!fscrypt_has_encryption_key(dir))
-			return ERR_PTR(-EPERM);
-
-		encrypted = true;
-	}
-
 	inode = new_inode(c->vfs_sb);
 	ui = ubifs_inode(inode);
 	if (!inode)
@@ -112,6 +99,12 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 			 current_time(inode);
 	inode->i_mapping->nrpages = 0;
 
+	err = fscrypt_prepare_new_inode(dir, inode, &encrypted);
+	if (err) {
+		ubifs_err(c, "fscrypt_prepare_new_inode failed: %i", err);
+		goto out_iput;
+	}
+
 	switch (mode & S_IFMT) {
 	case S_IFREG:
 		inode->i_mapping->a_ops = &ubifs_file_address_operations;
@@ -131,7 +124,6 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	case S_IFBLK:
 	case S_IFCHR:
 		inode->i_op  = &ubifs_file_inode_operations;
-		encrypted = false;
 		break;
 	default:
 		BUG();
@@ -151,9 +143,8 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 		if (c->highest_inum >= INUM_WATERMARK) {
 			spin_unlock(&c->cnt_lock);
 			ubifs_err(c, "out of inode numbers");
-			make_bad_inode(inode);
-			iput(inode);
-			return ERR_PTR(-EINVAL);
+			err = -EINVAL;
+			goto out_iput;
 		}
 		ubifs_warn(c, "running out of inode numbers (current %lu, max %u)",
 			   (unsigned long)c->highest_inum, INUM_WATERMARK);
@@ -171,16 +162,19 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,
 	spin_unlock(&c->cnt_lock);
 
 	if (encrypted) {
-		err = fscrypt_inherit_context(dir, inode, &encrypted, true);
+		err = fscrypt_set_context(inode, NULL);
 		if (err) {
-			ubifs_err(c, "fscrypt_inherit_context failed: %i", err);
-			make_bad_inode(inode);
-			iput(inode);
-			return ERR_PTR(err);
+			ubifs_err(c, "fscrypt_set_context failed: %i", err);
+			goto out_iput;
 		}
 	}
 
 	return inode;
+
+out_iput:
+	make_bad_inode(inode);
+	iput(inode);
+	return ERR_PTR(err);
 }
 
 static int dbg_check_name(const struct ubifs_info *c,
-- 
2.28.0


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  parent reply	other threads:[~2020-09-13  8:39 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-13  8:36 [PATCH v2 00/11] fscrypt: improve file creation flow Eric Biggers
2020-09-13  8:36 ` Eric Biggers
2020-09-13  8:36 ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 01/11] fscrypt: add fscrypt_prepare_new_inode() and fscrypt_set_context() Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 02/11] ext4: factor out ext4_xattr_credits_for_new_inode() Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 03/11] ext4: use fscrypt_prepare_new_inode() and fscrypt_set_context() Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 04/11] f2fs: " Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-14 17:26   ` Jaegeuk Kim
2020-09-14 17:26     ` Jaegeuk Kim
2020-09-14 17:26     ` Jaegeuk Kim
2020-09-13  8:36 ` Eric Biggers [this message]
2020-09-13  8:36   ` [PATCH v2 05/11] ubifs: " Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 06/11] fscrypt: remove fscrypt_inherit_context() Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 07/11] fscrypt: require that fscrypt_encrypt_symlink() already has key Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 08/11] fscrypt: stop pretending that key setup is nofs-safe Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 09/11] fscrypt: make "#define fscrypt_policy" user-only Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 10/11] fscrypt: move fscrypt_prepare_symlink() out-of-line Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-13  8:36 ` [PATCH v2 11/11] fscrypt: handle test_dummy_encryption in more logical way Eric Biggers
2020-09-13  8:36   ` Eric Biggers
2020-09-13  8:36   ` [f2fs-dev] " Eric Biggers
2020-09-14 17:31   ` Jaegeuk Kim
2020-09-14 17:31     ` Jaegeuk Kim
2020-09-14 17:31     ` Jaegeuk Kim

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