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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 02/11] ext4: factor out ext4_xattr_credits_for_new_inode()
Date: Sun, 13 Sep 2020 01:36:11 -0700	[thread overview]
Message-ID: <20200913083620.170627-3-ebiggers@kernel.org> (raw)
In-Reply-To: <20200913083620.170627-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

To compute a new inode's xattr credits, we need to know whether the
inode will be encrypted or not.  When we switch to use the new helper
function fscrypt_prepare_new_inode(), we won't find out whether the
inode will be encrypted until slightly later than is currently the case.
That will require moving the code block that computes the xattr credits.

To make this easier and reduce the length of __ext4_new_inode(), move
this code block into a new function ext4_xattr_credits_for_new_inode().

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/ext4/ialloc.c | 90 +++++++++++++++++++++++++++---------------------
 1 file changed, 51 insertions(+), 39 deletions(-)

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index df25d38d65393..0cc576005a923 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -742,6 +742,53 @@ static int find_inode_bit(struct super_block *sb, ext4_group_t group,
 	return 1;
 }
 
+static int ext4_xattr_credits_for_new_inode(struct inode *dir, mode_t mode,
+					    bool encrypt)
+{
+	struct super_block *sb = dir->i_sb;
+	int nblocks = 0;
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
+	struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
+
+	if (IS_ERR(p))
+		return PTR_ERR(p);
+	if (p) {
+		int acl_size = p->a_count * sizeof(ext4_acl_entry);
+
+		nblocks += (S_ISDIR(mode) ? 2 : 1) *
+			__ext4_xattr_set_credits(sb, NULL /* inode */,
+						 NULL /* block_bh */, acl_size,
+						 true /* is_create */);
+		posix_acl_release(p);
+	}
+#endif
+
+#ifdef CONFIG_SECURITY
+	{
+		int num_security_xattrs = 1;
+
+#ifdef CONFIG_INTEGRITY
+		num_security_xattrs++;
+#endif
+		/*
+		 * We assume that security xattrs are never more than 1k.
+		 * In practice they are under 128 bytes.
+		 */
+		nblocks += num_security_xattrs *
+			__ext4_xattr_set_credits(sb, NULL /* inode */,
+						 NULL /* block_bh */, 1024,
+						 true /* is_create */);
+	}
+#endif
+	if (encrypt)
+		nblocks += __ext4_xattr_set_credits(sb,
+						    NULL /* inode */,
+						    NULL /* block_bh */,
+						    FSCRYPT_SET_CONTEXT_MAX_SIZE,
+						    true /* is_create */);
+	return nblocks;
+}
+
 /*
  * There are two policies for allocating an inode.  If the new inode is
  * a directory, then a forward search is made for a block group with both
@@ -796,45 +843,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
 	}
 
 	if (!handle && sbi->s_journal && !(i_flags & EXT4_EA_INODE_FL)) {
-#ifdef CONFIG_EXT4_FS_POSIX_ACL
-		struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
-
-		if (IS_ERR(p))
-			return ERR_CAST(p);
-		if (p) {
-			int acl_size = p->a_count * sizeof(ext4_acl_entry);
-
-			nblocks += (S_ISDIR(mode) ? 2 : 1) *
-				__ext4_xattr_set_credits(sb, NULL /* inode */,
-					NULL /* block_bh */, acl_size,
-					true /* is_create */);
-			posix_acl_release(p);
-		}
-#endif
-
-#ifdef CONFIG_SECURITY
-		{
-			int num_security_xattrs = 1;
-
-#ifdef CONFIG_INTEGRITY
-			num_security_xattrs++;
-#endif
-			/*
-			 * We assume that security xattrs are never
-			 * more than 1k.  In practice they are under
-			 * 128 bytes.
-			 */
-			nblocks += num_security_xattrs *
-				__ext4_xattr_set_credits(sb, NULL /* inode */,
-					NULL /* block_bh */, 1024,
-					true /* is_create */);
-		}
-#endif
-		if (encrypt)
-			nblocks += __ext4_xattr_set_credits(sb,
-					NULL /* inode */, NULL /* block_bh */,
-					FSCRYPT_SET_CONTEXT_MAX_SIZE,
-					true /* is_create */);
+		ret2 = ext4_xattr_credits_for_new_inode(dir, mode, encrypt);
+		if (ret2 < 0)
+			return ERR_PTR(ret2);
+		nblocks += ret2;
 	}
 
 	ngroups = ext4_get_groups_count(sb);
-- 
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 02/11] ext4: factor out ext4_xattr_credits_for_new_inode()
Date: Sun, 13 Sep 2020 01:36:11 -0700	[thread overview]
Message-ID: <20200913083620.170627-3-ebiggers@kernel.org> (raw)
In-Reply-To: <20200913083620.170627-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

To compute a new inode's xattr credits, we need to know whether the
inode will be encrypted or not.  When we switch to use the new helper
function fscrypt_prepare_new_inode(), we won't find out whether the
inode will be encrypted until slightly later than is currently the case.
That will require moving the code block that computes the xattr credits.

To make this easier and reduce the length of __ext4_new_inode(), move
this code block into a new function ext4_xattr_credits_for_new_inode().

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/ext4/ialloc.c | 90 +++++++++++++++++++++++++++---------------------
 1 file changed, 51 insertions(+), 39 deletions(-)

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index df25d38d65393..0cc576005a923 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -742,6 +742,53 @@ static int find_inode_bit(struct super_block *sb, ext4_group_t group,
 	return 1;
 }
 
+static int ext4_xattr_credits_for_new_inode(struct inode *dir, mode_t mode,
+					    bool encrypt)
+{
+	struct super_block *sb = dir->i_sb;
+	int nblocks = 0;
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
+	struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
+
+	if (IS_ERR(p))
+		return PTR_ERR(p);
+	if (p) {
+		int acl_size = p->a_count * sizeof(ext4_acl_entry);
+
+		nblocks += (S_ISDIR(mode) ? 2 : 1) *
+			__ext4_xattr_set_credits(sb, NULL /* inode */,
+						 NULL /* block_bh */, acl_size,
+						 true /* is_create */);
+		posix_acl_release(p);
+	}
+#endif
+
+#ifdef CONFIG_SECURITY
+	{
+		int num_security_xattrs = 1;
+
+#ifdef CONFIG_INTEGRITY
+		num_security_xattrs++;
+#endif
+		/*
+		 * We assume that security xattrs are never more than 1k.
+		 * In practice they are under 128 bytes.
+		 */
+		nblocks += num_security_xattrs *
+			__ext4_xattr_set_credits(sb, NULL /* inode */,
+						 NULL /* block_bh */, 1024,
+						 true /* is_create */);
+	}
+#endif
+	if (encrypt)
+		nblocks += __ext4_xattr_set_credits(sb,
+						    NULL /* inode */,
+						    NULL /* block_bh */,
+						    FSCRYPT_SET_CONTEXT_MAX_SIZE,
+						    true /* is_create */);
+	return nblocks;
+}
+
 /*
  * There are two policies for allocating an inode.  If the new inode is
  * a directory, then a forward search is made for a block group with both
@@ -796,45 +843,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
 	}
 
 	if (!handle && sbi->s_journal && !(i_flags & EXT4_EA_INODE_FL)) {
-#ifdef CONFIG_EXT4_FS_POSIX_ACL
-		struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
-
-		if (IS_ERR(p))
-			return ERR_CAST(p);
-		if (p) {
-			int acl_size = p->a_count * sizeof(ext4_acl_entry);
-
-			nblocks += (S_ISDIR(mode) ? 2 : 1) *
-				__ext4_xattr_set_credits(sb, NULL /* inode */,
-					NULL /* block_bh */, acl_size,
-					true /* is_create */);
-			posix_acl_release(p);
-		}
-#endif
-
-#ifdef CONFIG_SECURITY
-		{
-			int num_security_xattrs = 1;
-
-#ifdef CONFIG_INTEGRITY
-			num_security_xattrs++;
-#endif
-			/*
-			 * We assume that security xattrs are never
-			 * more than 1k.  In practice they are under
-			 * 128 bytes.
-			 */
-			nblocks += num_security_xattrs *
-				__ext4_xattr_set_credits(sb, NULL /* inode */,
-					NULL /* block_bh */, 1024,
-					true /* is_create */);
-		}
-#endif
-		if (encrypt)
-			nblocks += __ext4_xattr_set_credits(sb,
-					NULL /* inode */, NULL /* block_bh */,
-					FSCRYPT_SET_CONTEXT_MAX_SIZE,
-					true /* is_create */);
+		ret2 = ext4_xattr_credits_for_new_inode(dir, mode, encrypt);
+		if (ret2 < 0)
+			return ERR_PTR(ret2);
+		nblocks += ret2;
 	}
 
 	ngroups = ext4_get_groups_count(sb);
-- 
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 02/11] ext4: factor out ext4_xattr_credits_for_new_inode()
Date: Sun, 13 Sep 2020 01:36:11 -0700	[thread overview]
Message-ID: <20200913083620.170627-3-ebiggers@kernel.org> (raw)
In-Reply-To: <20200913083620.170627-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

To compute a new inode's xattr credits, we need to know whether the
inode will be encrypted or not.  When we switch to use the new helper
function fscrypt_prepare_new_inode(), we won't find out whether the
inode will be encrypted until slightly later than is currently the case.
That will require moving the code block that computes the xattr credits.

To make this easier and reduce the length of __ext4_new_inode(), move
this code block into a new function ext4_xattr_credits_for_new_inode().

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/ext4/ialloc.c | 90 +++++++++++++++++++++++++++---------------------
 1 file changed, 51 insertions(+), 39 deletions(-)

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index df25d38d65393..0cc576005a923 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -742,6 +742,53 @@ static int find_inode_bit(struct super_block *sb, ext4_group_t group,
 	return 1;
 }
 
+static int ext4_xattr_credits_for_new_inode(struct inode *dir, mode_t mode,
+					    bool encrypt)
+{
+	struct super_block *sb = dir->i_sb;
+	int nblocks = 0;
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
+	struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
+
+	if (IS_ERR(p))
+		return PTR_ERR(p);
+	if (p) {
+		int acl_size = p->a_count * sizeof(ext4_acl_entry);
+
+		nblocks += (S_ISDIR(mode) ? 2 : 1) *
+			__ext4_xattr_set_credits(sb, NULL /* inode */,
+						 NULL /* block_bh */, acl_size,
+						 true /* is_create */);
+		posix_acl_release(p);
+	}
+#endif
+
+#ifdef CONFIG_SECURITY
+	{
+		int num_security_xattrs = 1;
+
+#ifdef CONFIG_INTEGRITY
+		num_security_xattrs++;
+#endif
+		/*
+		 * We assume that security xattrs are never more than 1k.
+		 * In practice they are under 128 bytes.
+		 */
+		nblocks += num_security_xattrs *
+			__ext4_xattr_set_credits(sb, NULL /* inode */,
+						 NULL /* block_bh */, 1024,
+						 true /* is_create */);
+	}
+#endif
+	if (encrypt)
+		nblocks += __ext4_xattr_set_credits(sb,
+						    NULL /* inode */,
+						    NULL /* block_bh */,
+						    FSCRYPT_SET_CONTEXT_MAX_SIZE,
+						    true /* is_create */);
+	return nblocks;
+}
+
 /*
  * There are two policies for allocating an inode.  If the new inode is
  * a directory, then a forward search is made for a block group with both
@@ -796,45 +843,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
 	}
 
 	if (!handle && sbi->s_journal && !(i_flags & EXT4_EA_INODE_FL)) {
-#ifdef CONFIG_EXT4_FS_POSIX_ACL
-		struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
-
-		if (IS_ERR(p))
-			return ERR_CAST(p);
-		if (p) {
-			int acl_size = p->a_count * sizeof(ext4_acl_entry);
-
-			nblocks += (S_ISDIR(mode) ? 2 : 1) *
-				__ext4_xattr_set_credits(sb, NULL /* inode */,
-					NULL /* block_bh */, acl_size,
-					true /* is_create */);
-			posix_acl_release(p);
-		}
-#endif
-
-#ifdef CONFIG_SECURITY
-		{
-			int num_security_xattrs = 1;
-
-#ifdef CONFIG_INTEGRITY
-			num_security_xattrs++;
-#endif
-			/*
-			 * We assume that security xattrs are never
-			 * more than 1k.  In practice they are under
-			 * 128 bytes.
-			 */
-			nblocks += num_security_xattrs *
-				__ext4_xattr_set_credits(sb, NULL /* inode */,
-					NULL /* block_bh */, 1024,
-					true /* is_create */);
-		}
-#endif
-		if (encrypt)
-			nblocks += __ext4_xattr_set_credits(sb,
-					NULL /* inode */, NULL /* block_bh */,
-					FSCRYPT_SET_CONTEXT_MAX_SIZE,
-					true /* is_create */);
+		ret2 = ext4_xattr_credits_for_new_inode(dir, mode, encrypt);
+		if (ret2 < 0)
+			return ERR_PTR(ret2);
+		nblocks += ret2;
 	}
 
 	ngroups = ext4_get_groups_count(sb);
-- 
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 ` Eric Biggers [this message]
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   ` [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 ` [PATCH v2 05/11] ubifs: " 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 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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