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* [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
@ 2019-08-27 15:05 Mark Salyzyn via Linux-f2fs-devel
  2019-08-27 15:49 ` Jeff Layton
                   ` (3 more replies)
  0 siblings, 4 replies; 7+ messages in thread
From: Mark Salyzyn via Linux-f2fs-devel @ 2019-08-27 15:05 UTC (permalink / raw)
  To: linux-kernel
  Cc: Latchesar Ionkov, Hugh Dickins, Mike Marshall, James Morris,
	devel, Eric Van Hensbergen, Joel Becker, Anna Schumaker,
	Trond Myklebust, Mathieu Malaterre, Greg Kroah-Hartman, Jan Kara,
	Casey Schaufler, Andrew Morton, Dave Kleikamp, linux-doc,
	Jeff Layton, Mimi Zohar, linux-cifs, Paul Moore, Darrick J. Wong,
	Eric Sandeen, kernel-team, selinux, Brian Foster, reiserfs-devel,
	Tejun Heo, Jaegeuk Kim, Theodore Ts'o, Miklos Szeredi,
	linux-f2fs-devel, Benjamin Coddington, linux-integrity,
	Martin Brandenburg, Chris Mason, linux-mtd, linux-afs,
	Jonathan Corbet, Vyacheslav Dubeyko, Allison Henderson,
	Ilya Dryomov, linux-ext4, Stephen Smalley, Serge Hallyn,
	Eric Paris, ceph-devel, linux-nfs, linux-mm, samba-technical,
	linux-xfs, Bob Peterson, linux-fsdevel, linux-erofs,
	David S. Miller, ocfs2-devel, jfs-discussion, Jan Kara,
	Eric Biggers, Dominique Martinet, Adrian Hunter, David Howells,
	Joseph Qi, Andreas Dilger, Mark Salyzyn, devel, J. Bruce Fields,
	Andreas Gruenbacher, Sage Weil, Richard Weinberger, Mark Fasheh,
	cluster-devel, Steve French, v9fs-developer, Bharath Vedartham,
	Jann Horn, ecryptfs, Josef Bacik, Dave Chinner, David Sterba,
	Artem Bityutskiy, netdev, linux-unionfs, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

Replace arguments for get and set xattr methods, and __vfs_getxattr
and __vfs_setaxtr functions with a reference to the following now
common argument structure:

struct xattr_gs_args {
	struct dentry *dentry;
	struct inode *inode;
	const char *name;
	union {
		void *buffer;
		const void *value;
	};
	size_t size;
	int flags;
};

Which in effect adds a flags option to the get method and
__vfs_getxattr function.

Add a flag option to get xattr method that has bit flag of
XATTR_NOSECURITY passed to it.  XATTR_NOSECURITY is generally then
set in the __vfs_getxattr path when called by security
infrastructure.

This handles the case of a union filesystem driver that is being
requested by the security layer to report back the xattr data.

For the use case where access is to be blocked by the security layer.

The path then could be security(dentry) ->
__vfs_getxattr({dentry...XATTR_NOSECURITY}) ->
handler->get({dentry...XATTR_NOSECURITY}) ->
__vfs_getxattr({lower_dentry...XATTR_NOSECURITY}) ->
lower_handler->get({lower_dentry...XATTR_NOSECURITY})
which would report back through the chain data and success as
expected, the logging security layer at the top would have the
data to determine the access permissions and report back the target
context that was blocked.

Without the get handler flag, the path on a union filesystem would be
the errant security(dentry) -> __vfs_getxattr(dentry) ->
handler->get(dentry) -> vfs_getxattr(lower_dentry) -> nested ->
security(lower_dentry, log off) -> lower_handler->get(lower_dentry)
which would report back through the chain no data, and -EACCES.

For selinux for both cases, this would translate to a correctly
determined blocked access. In the first case with this change a correct avc
log would be reported, in the second legacy case an incorrect avc log
would be reported against an uninitialized u:object_r:unlabeled:s0
context making the logs cosmetically useless for audit2allow.

This patch series is inert and is the wide-spread addition of the
flags option for xattr functions, and a replacement of __vfs_getxattr
with __vfs_getxattr({...XATTR_NOSECURITY}).

Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: linux-kernel@vger.kernel.org
Cc: kernel-team@android.com
Cc: linux-security-module@vger.kernel.org
Cc: stable@vger.kernel.org # 4.4, 4.9, 4.14 & 4.19
---
v8:
- Documentation reported 'struct xattr_gs_flags' rather than
  'struct xattr_gs_flags *args' as argument to get and set methods.

v7:
- missed spots in fs/9p/acl.c, fs/afs/xattr.c, fs/ecryptfs/crypto.c,
  fs/ubifs/xattr.c, fs/xfs/libxfs/xfs_attr.c,
  security/integrity/evm/evm_main.c and security/smack/smack_lsm.c.

v6:
- kernfs missed a spot

v5:
- introduce struct xattr_gs_args for get and set methods,
  __vfs_getxattr and __vfs_setxattr functions.
- cover a missing spot in ext2.
- switch from snprintf to scnprintf for correctness.

v4:
- ifdef __KERNEL__ around XATTR_NOSECURITY to
  keep it colocated in uapi headers.

v3:
- poor aim on ubifs not ubifs_xattr_get, but static xattr_get

v2:
- Missed a spot: ubifs, erofs and afs.

v1:
- Removed from an overlayfs patch set, and made independent.
  Expect this to be the basis of some security improvements.
---
 Documentation/filesystems/Locking |  10 ++-
 drivers/staging/erofs/xattr.c     |   8 +--
 fs/9p/acl.c                       |  51 +++++++-------
 fs/9p/xattr.c                     |  19 +++--
 fs/afs/xattr.c                    | 112 +++++++++++++-----------------
 fs/btrfs/xattr.c                  |  36 +++++-----
 fs/ceph/xattr.c                   |  40 +++++------
 fs/cifs/xattr.c                   |  72 +++++++++----------
 fs/ecryptfs/crypto.c              |  20 +++---
 fs/ecryptfs/inode.c               |  36 ++++++----
 fs/ecryptfs/mmap.c                |  39 ++++++-----
 fs/ext2/xattr_security.c          |  16 ++---
 fs/ext2/xattr_trusted.c           |  15 ++--
 fs/ext2/xattr_user.c              |  19 +++--
 fs/ext4/xattr_security.c          |  15 ++--
 fs/ext4/xattr_trusted.c           |  15 ++--
 fs/ext4/xattr_user.c              |  19 +++--
 fs/f2fs/xattr.c                   |  42 +++++------
 fs/fuse/xattr.c                   |  23 +++---
 fs/gfs2/xattr.c                   |  18 ++---
 fs/hfs/attr.c                     |  15 ++--
 fs/hfsplus/xattr.c                |  17 +++--
 fs/hfsplus/xattr_security.c       |  13 ++--
 fs/hfsplus/xattr_trusted.c        |  13 ++--
 fs/hfsplus/xattr_user.c           |  13 ++--
 fs/jffs2/security.c               |  16 ++---
 fs/jffs2/xattr_trusted.c          |  16 ++---
 fs/jffs2/xattr_user.c             |  16 ++---
 fs/jfs/xattr.c                    |  33 ++++-----
 fs/kernfs/inode.c                 |  23 +++---
 fs/nfs/nfs4proc.c                 |  28 ++++----
 fs/ocfs2/xattr.c                  |  52 ++++++--------
 fs/orangefs/xattr.c               |  19 ++---
 fs/overlayfs/inode.c              |  43 ++++++------
 fs/overlayfs/overlayfs.h          |   6 +-
 fs/overlayfs/super.c              |  53 ++++++--------
 fs/posix_acl.c                    |  23 +++---
 fs/reiserfs/xattr.c               |   2 +-
 fs/reiserfs/xattr_security.c      |  22 +++---
 fs/reiserfs/xattr_trusted.c       |  22 +++---
 fs/reiserfs/xattr_user.c          |  22 +++---
 fs/squashfs/xattr.c               |  10 +--
 fs/ubifs/xattr.c                  |  33 +++++----
 fs/xattr.c                        | 112 ++++++++++++++++++------------
 fs/xfs/libxfs/xfs_attr.c          |   4 +-
 fs/xfs/libxfs/xfs_attr.h          |   2 +-
 fs/xfs/xfs_xattr.c                |  35 +++++-----
 include/linux/xattr.h             |  26 ++++---
 include/uapi/linux/xattr.h        |   7 +-
 mm/shmem.c                        |  21 +++---
 net/socket.c                      |  16 ++---
 security/commoncap.c              |  29 +++++---
 security/integrity/evm/evm_main.c |  13 +++-
 security/selinux/hooks.c          |  28 ++++++--
 security/smack/smack_lsm.c        |  38 ++++++----
 55 files changed, 732 insertions(+), 734 deletions(-)

diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 204dd3ea36bb..c16752a41959 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -101,12 +101,10 @@ of the locking scheme for directory operations.
 ----------------------- xattr_handler operations -----------------------
 prototypes:
 	bool (*list)(struct dentry *dentry);
-	int (*get)(const struct xattr_handler *handler, struct dentry *dentry,
-		   struct inode *inode, const char *name, void *buffer,
-		   size_t size);
-	int (*set)(const struct xattr_handler *handler, struct dentry *dentry,
-		   struct inode *inode, const char *name, const void *buffer,
-		   size_t size, int flags);
+	int (*get)(const struct xattr_handler *handler,
+		   struct xattr_gs_flags *args);
+	int (*set)(const struct xattr_handler *handler,
+		   struct xattr_gs_flags *args);
 
 locking rules:
 	all may block
diff --git a/drivers/staging/erofs/xattr.c b/drivers/staging/erofs/xattr.c
index df40654b9fbb..41dcfc82f0b2 100644
--- a/drivers/staging/erofs/xattr.c
+++ b/drivers/staging/erofs/xattr.c
@@ -462,10 +462,9 @@ int erofs_getxattr(struct inode *inode, int index,
 }
 
 static int erofs_xattr_generic_get(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, void *buffer, size_t size)
+				   struct xattr_gs_args *args)
 {
-	struct erofs_sb_info *const sbi = EROFS_I_SB(inode);
+	struct erofs_sb_info *const sbi = EROFS_I_SB(args->inode);
 
 	switch (handler->flags) {
 	case EROFS_XATTR_INDEX_USER:
@@ -482,7 +481,8 @@ static int erofs_xattr_generic_get(const struct xattr_handler *handler,
 		return -EINVAL;
 	}
 
-	return erofs_getxattr(inode, handler->flags, name, buffer, size);
+	return erofs_getxattr(args->inode, handler->flags, args->name,
+			      args->buffer, args->size);
 }
 
 const struct xattr_handler erofs_xattr_user_handler = {
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index 6261719f6f2a..2f5184de75c4 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -213,60 +213,61 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep,
 }
 
 static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
-			      struct dentry *dentry, struct inode *inode,
-			      const char *name, void *buffer, size_t size)
+			      struct xattr_gs_args *args)
 {
 	struct v9fs_session_info *v9ses;
 	struct posix_acl *acl;
 	int error;
 
-	v9ses = v9fs_dentry2v9ses(dentry);
+	v9ses = v9fs_dentry2v9ses(args->dentry);
 	/*
 	 * We allow set/get/list of acl when access=client is not specified
 	 */
 	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
-		return v9fs_xattr_get(dentry, handler->name, buffer, size);
+		return v9fs_xattr_get(args->dentry, handler->name,
+				      args->buffer, args->size);
 
-	acl = v9fs_get_cached_acl(inode, handler->flags);
+	acl = v9fs_get_cached_acl(args->inode, handler->flags);
 	if (IS_ERR(acl))
 		return PTR_ERR(acl);
 	if (acl == NULL)
 		return -ENODATA;
-	error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
+	error = posix_acl_to_xattr(&init_user_ns, acl,
+				   args->buffer, args->size);
 	posix_acl_release(acl);
 
 	return error;
 }
 
 static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
-			      struct dentry *dentry, struct inode *inode,
-			      const char *name, const void *value,
-			      size_t size, int flags)
+			      struct xattr_gs_args *args)
 {
 	int retval;
 	struct posix_acl *acl;
 	struct v9fs_session_info *v9ses;
 
-	v9ses = v9fs_dentry2v9ses(dentry);
+	v9ses = v9fs_dentry2v9ses(args->dentry);
 	/*
 	 * set the attribute on the remote. Without even looking at the
 	 * xattr value. We leave it to the server to validate
 	 */
 	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
-		return v9fs_xattr_set(dentry, handler->name, value, size,
-				      flags);
+		return v9fs_xattr_set(args->dentry, handler->name,
+				      args->value, args->size, args->flags);
 
-	if (S_ISLNK(inode->i_mode))
+	if (S_ISLNK(args->inode->i_mode))
 		return -EOPNOTSUPP;
-	if (!inode_owner_or_capable(inode))
+	if (!inode_owner_or_capable(args->inode))
 		return -EPERM;
-	if (value) {
+	if (args->value) {
 		/* update the cached acl value */
-		acl = posix_acl_from_xattr(&init_user_ns, value, size);
+		acl = posix_acl_from_xattr(&init_user_ns,
+					   args->value, args->size);
 		if (IS_ERR(acl))
 			return PTR_ERR(acl);
 		else if (acl) {
-			retval = posix_acl_valid(inode->i_sb->s_user_ns, acl);
+			retval = posix_acl_valid(args->inode->i_sb->s_user_ns,
+						 acl);
 			if (retval)
 				goto err_out;
 		}
@@ -279,7 +280,8 @@ static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
 			struct iattr iattr = { 0 };
 			struct posix_acl *old_acl = acl;
 
-			retval = posix_acl_update_mode(inode, &iattr.ia_mode, &acl);
+			retval = posix_acl_update_mode(args->inode,
+						       &iattr.ia_mode, &acl);
 			if (retval)
 				goto err_out;
 			if (!acl) {
@@ -289,19 +291,19 @@ static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
 				 * update ACL.
 				 */
 				posix_acl_release(old_acl);
-				value = NULL;
-				size = 0;
+				args->value = NULL;
+				args->size = 0;
 			}
 			iattr.ia_valid = ATTR_MODE;
 			/* FIXME should we update ctime ?
 			 * What is the following setxattr update the
 			 * mode ?
 			 */
-			v9fs_vfs_setattr_dotl(dentry, &iattr);
+			v9fs_vfs_setattr_dotl(args->dentry, &iattr);
 		}
 		break;
 	case ACL_TYPE_DEFAULT:
-		if (!S_ISDIR(inode->i_mode)) {
+		if (!S_ISDIR(args->inode->i_mode)) {
 			retval = acl ? -EINVAL : 0;
 			goto err_out;
 		}
@@ -309,9 +311,10 @@ static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
 	default:
 		BUG();
 	}
-	retval = v9fs_xattr_set(dentry, handler->name, value, size, flags);
+	retval = v9fs_xattr_set(args->dentry, handler->name,
+				args->value, args->size, args->flags);
 	if (!retval)
-		set_cached_acl(inode, handler->flags, acl);
+		set_cached_acl(args->inode, handler->flags, acl);
 err_out:
 	posix_acl_release(acl);
 	return retval;
diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c
index ac8ff8ca4c11..36d4c309be08 100644
--- a/fs/9p/xattr.c
+++ b/fs/9p/xattr.c
@@ -138,22 +138,19 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 }
 
 static int v9fs_xattr_handler_get(const struct xattr_handler *handler,
-				  struct dentry *dentry, struct inode *inode,
-				  const char *name, void *buffer, size_t size)
+				  struct xattr_gs_args *args)
 {
-	const char *full_name = xattr_full_name(handler, name);
-
-	return v9fs_xattr_get(dentry, full_name, buffer, size);
+	return v9fs_xattr_get(args->dentry,
+			      xattr_full_name(handler, args->name),
+			      args->buffer, args->size);
 }
 
 static int v9fs_xattr_handler_set(const struct xattr_handler *handler,
-				  struct dentry *dentry, struct inode *inode,
-				  const char *name, const void *value,
-				  size_t size, int flags)
+				  struct xattr_gs_args *args)
 {
-	const char *full_name = xattr_full_name(handler, name);
-
-	return v9fs_xattr_set(dentry, full_name, value, size, flags);
+	return v9fs_xattr_set(args->dentry,
+			      xattr_full_name(handler, args->name),
+			      args->value, args->size, args->flags);
 }
 
 static struct xattr_handler v9fs_xattr_user_handler = {
diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
index 5552d034090a..787ae107642d 100644
--- a/fs/afs/xattr.c
+++ b/fs/afs/xattr.c
@@ -38,13 +38,11 @@ ssize_t afs_listxattr(struct dentry *dentry, char *buffer, size_t size)
  * Get a file's ACL.
  */
 static int afs_xattr_get_acl(const struct xattr_handler *handler,
-			     struct dentry *dentry,
-			     struct inode *inode, const char *name,
-			     void *buffer, size_t size)
+			     struct xattr_gs_args *args)
 {
 	struct afs_fs_cursor fc;
 	struct afs_status_cb *scb;
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	struct afs_acl *acl = NULL;
 	struct key *key;
 	int ret = -ENOMEM;
@@ -76,9 +74,9 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
 
 	if (ret == 0) {
 		ret = acl->size;
-		if (size > 0) {
-			if (acl->size <= size)
-				memcpy(buffer, acl->data, acl->size);
+		if (args->size > 0) {
+			if (acl->size <= args->size)
+				memcpy(args->buffer, acl->data, acl->size);
 			else
 				ret = -ERANGE;
 		}
@@ -96,25 +94,23 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
  * Set a file's AFS3 ACL.
  */
 static int afs_xattr_set_acl(const struct xattr_handler *handler,
-                             struct dentry *dentry,
-                             struct inode *inode, const char *name,
-                             const void *buffer, size_t size, int flags)
+			     struct xattr_gs_args *args)
 {
 	struct afs_fs_cursor fc;
 	struct afs_status_cb *scb;
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	struct afs_acl *acl = NULL;
 	struct key *key;
 	int ret = -ENOMEM;
 
-	if (flags == XATTR_CREATE)
+	if (args->flags == XATTR_CREATE)
 		return -EINVAL;
 
 	scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
 	if (!scb)
 		goto error;
 
-	acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
+	acl = kmalloc(sizeof(*acl) + args->size, GFP_KERNEL);
 	if (!acl)
 		goto error_scb;
 
@@ -124,8 +120,8 @@ static int afs_xattr_set_acl(const struct xattr_handler *handler,
 		goto error_acl;
 	}
 
-	acl->size = size;
-	memcpy(acl->data, buffer, size);
+	acl->size = args->size;
+	memcpy(acl->data, args->value, args->size);
 
 	ret = -ERESTARTSYS;
 	if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
@@ -161,25 +157,23 @@ static const struct xattr_handler afs_xattr_afs_acl_handler = {
  * Get a file's YFS ACL.
  */
 static int afs_xattr_get_yfs(const struct xattr_handler *handler,
-			     struct dentry *dentry,
-			     struct inode *inode, const char *name,
-			     void *buffer, size_t size)
+			     struct xattr_gs_args *args)
 {
 	struct afs_fs_cursor fc;
 	struct afs_status_cb *scb;
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	struct yfs_acl *yacl = NULL;
 	struct key *key;
 	char buf[16], *data;
 	int which = 0, dsize, ret = -ENOMEM;
 
-	if (strcmp(name, "acl") == 0)
+	if (strcmp(args->name, "acl") == 0)
 		which = 0;
-	else if (strcmp(name, "acl_inherited") == 0)
+	else if (strcmp(args->name, "acl_inherited") == 0)
 		which = 1;
-	else if (strcmp(name, "acl_num_cleaned") == 0)
+	else if (strcmp(args->name, "acl_num_cleaned") == 0)
 		which = 2;
-	else if (strcmp(name, "vol_acl") == 0)
+	else if (strcmp(args->name, "vol_acl") == 0)
 		which = 3;
 	else
 		return -EOPNOTSUPP;
@@ -228,11 +222,11 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
 		break;
 	case 1:
 		data = buf;
-		dsize = snprintf(buf, sizeof(buf), "%u", yacl->inherit_flag);
+		dsize = scnprintf(buf, sizeof(buf), "%u", yacl->inherit_flag);
 		break;
 	case 2:
 		data = buf;
-		dsize = snprintf(buf, sizeof(buf), "%u", yacl->num_cleaned);
+		dsize = scnprintf(buf, sizeof(buf), "%u", yacl->num_cleaned);
 		break;
 	case 3:
 		data = yacl->vol_acl->data;
@@ -244,12 +238,12 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
 	}
 
 	ret = dsize;
-	if (size > 0) {
-		if (dsize > size) {
+	if (args->size > 0) {
+		if (dsize > args->size) {
 			ret = -ERANGE;
 			goto error_key;
 		}
-		memcpy(buffer, data, dsize);
+		memcpy(args->buffer, data, dsize);
 	}
 
 error_key:
@@ -266,31 +260,29 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
  * Set a file's YFS ACL.
  */
 static int afs_xattr_set_yfs(const struct xattr_handler *handler,
-                             struct dentry *dentry,
-                             struct inode *inode, const char *name,
-                             const void *buffer, size_t size, int flags)
+			     struct xattr_gs_args *args)
 {
 	struct afs_fs_cursor fc;
 	struct afs_status_cb *scb;
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	struct afs_acl *acl = NULL;
 	struct key *key;
 	int ret = -ENOMEM;
 
-	if (flags == XATTR_CREATE ||
-	    strcmp(name, "acl") != 0)
+	if (args->flags == XATTR_CREATE ||
+	    strcmp(args->name, "acl") != 0)
 		return -EINVAL;
 
 	scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
 	if (!scb)
 		goto error;
 
-	acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
+	acl = kmalloc(sizeof(*acl) + args->size, GFP_KERNEL);
 	if (!acl)
 		goto error_scb;
 
-	acl->size = size;
-	memcpy(acl->data, buffer, size);
+	acl->size = args->size;
+	memcpy(acl->data, args->value, args->size);
 
 	key = afs_request_key(vnode->volume->cell);
 	if (IS_ERR(key)) {
@@ -332,20 +324,18 @@ static const struct xattr_handler afs_xattr_yfs_handler = {
  * Get the name of the cell on which a file resides.
  */
 static int afs_xattr_get_cell(const struct xattr_handler *handler,
-			      struct dentry *dentry,
-			      struct inode *inode, const char *name,
-			      void *buffer, size_t size)
+			      struct xattr_gs_args *args)
 {
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	struct afs_cell *cell = vnode->volume->cell;
 	size_t namelen;
 
 	namelen = cell->name_len;
-	if (size == 0)
+	if (args->size == 0)
 		return namelen;
-	if (namelen > size)
+	if (namelen > args->size)
 		return -ERANGE;
-	memcpy(buffer, cell->name, namelen);
+	memcpy(args->buffer, cell->name, namelen);
 	return namelen;
 }
 
@@ -359,30 +349,30 @@ static const struct xattr_handler afs_xattr_afs_cell_handler = {
  * hex numbers separated by colons.
  */
 static int afs_xattr_get_fid(const struct xattr_handler *handler,
-			     struct dentry *dentry,
-			     struct inode *inode, const char *name,
-			     void *buffer, size_t size)
+			     struct xattr_gs_args *args)
 {
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	char text[16 + 1 + 24 + 1 + 8 + 1];
 	size_t len;
 
 	/* The volume ID is 64-bit, the vnode ID is 96-bit and the
 	 * uniquifier is 32-bit.
 	 */
-	len = sprintf(text, "%llx:", vnode->fid.vid);
+	len = scnprintf(text, sizeof(text), "%llx:", vnode->fid.vid);
 	if (vnode->fid.vnode_hi)
-		len += sprintf(text + len, "%x%016llx",
+		len += scnprintf(text + len, sizeof(text) - len, "%x%016llx",
 			       vnode->fid.vnode_hi, vnode->fid.vnode);
 	else
-		len += sprintf(text + len, "%llx", vnode->fid.vnode);
-	len += sprintf(text + len, ":%x", vnode->fid.unique);
+		len += scnprintf(text + len, sizeof(text) - len, "%llx",
+				 vnode->fid.vnode);
+	len += scnprintf(text + len, sizeof(text) - len, ":%x",
+			 vnode->fid.unique);
 
-	if (size == 0)
+	if (args->size == 0)
 		return len;
-	if (len > size)
+	if (len > args->size)
 		return -ERANGE;
-	memcpy(buffer, text, len);
+	memcpy(args->buffer, text, len);
 	return len;
 }
 
@@ -395,20 +385,18 @@ static const struct xattr_handler afs_xattr_afs_fid_handler = {
  * Get the name of the volume on which a file resides.
  */
 static int afs_xattr_get_volume(const struct xattr_handler *handler,
-			      struct dentry *dentry,
-			      struct inode *inode, const char *name,
-			      void *buffer, size_t size)
+			      struct xattr_gs_args *args)
 {
-	struct afs_vnode *vnode = AFS_FS_I(inode);
+	struct afs_vnode *vnode = AFS_FS_I(args->inode);
 	const char *volname = vnode->volume->name;
 	size_t namelen;
 
 	namelen = strlen(volname);
-	if (size == 0)
+	if (args->size == 0)
 		return namelen;
-	if (namelen > size)
+	if (namelen > args->size)
 		return -ERANGE;
-	memcpy(buffer, volname, namelen);
+	memcpy(args->buffer, volname, namelen);
 	return namelen;
 }
 
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 95d9aebff2c4..e47a0e461bd2 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -352,33 +352,30 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
 }
 
 static int btrfs_xattr_handler_get(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, void *buffer, size_t size)
+				   struct xattr_gs_args *args)
 {
-	name = xattr_full_name(handler, name);
-	return btrfs_getxattr(inode, name, buffer, size);
+	return btrfs_getxattr(args->inode,
+			      xattr_full_name(handler, args->name),
+			      args->buffer, args->size);
 }
 
 static int btrfs_xattr_handler_set(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, const void *buffer,
-				   size_t size, int flags)
+				   struct xattr_gs_args *args)
 {
-	name = xattr_full_name(handler, name);
-	return btrfs_setxattr_trans(inode, name, buffer, size, flags);
+	return btrfs_setxattr_trans(args->inode,
+				    xattr_full_name(handler, args->name),
+				    args->value, args->size, args->flags);
 }
 
 static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler,
-					struct dentry *unused, struct inode *inode,
-					const char *name, const void *value,
-					size_t size, int flags)
+					struct xattr_gs_args *args)
 {
 	int ret;
 	struct btrfs_trans_handle *trans;
-	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_root *root = BTRFS_I(args->inode)->root;
 
-	name = xattr_full_name(handler, name);
-	ret = btrfs_validate_prop(name, value, size);
+	ret = btrfs_validate_prop(xattr_full_name(handler, args->name),
+				  args->value, args->size);
 	if (ret)
 		return ret;
 
@@ -386,11 +383,12 @@ static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler,
 	if (IS_ERR(trans))
 		return PTR_ERR(trans);
 
-	ret = btrfs_set_prop(trans, inode, name, value, size, flags);
+	ret = btrfs_set_prop(trans, args->inode, args->name,
+			     args->value, args->size, args->flags);
 	if (!ret) {
-		inode_inc_iversion(inode);
-		inode->i_ctime = current_time(inode);
-		ret = btrfs_update_inode(trans, root, inode);
+		inode_inc_iversion(args->inode);
+		args->inode->i_ctime = current_time(args->inode);
+		ret = btrfs_update_inode(trans, root, args->inode);
 		BUG_ON(ret);
 	}
 
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 939eab7aa219..c4fee624291b 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -1179,22 +1179,21 @@ int __ceph_setxattr(struct inode *inode, const char *name,
 }
 
 static int ceph_get_xattr_handler(const struct xattr_handler *handler,
-				  struct dentry *dentry, struct inode *inode,
-				  const char *name, void *value, size_t size)
+				  struct xattr_gs_args *args)
 {
-	if (!ceph_is_valid_xattr(name))
+	if (!ceph_is_valid_xattr(args->name))
 		return -EOPNOTSUPP;
-	return __ceph_getxattr(inode, name, value, size);
+	return __ceph_getxattr(args->inode, args->name,
+			       args->buffer, args->size);
 }
 
 static int ceph_set_xattr_handler(const struct xattr_handler *handler,
-				  struct dentry *unused, struct inode *inode,
-				  const char *name, const void *value,
-				  size_t size, int flags)
+				  struct xattr_gs_args *args)
 {
-	if (!ceph_is_valid_xattr(name))
+	if (!ceph_is_valid_xattr(args->name))
 		return -EOPNOTSUPP;
-	return __ceph_setxattr(inode, name, value, size, flags);
+	return __ceph_setxattr(args->inode, args->name,
+			       args->value, args->size, args->flags);
 }
 
 static const struct xattr_handler ceph_other_xattr_handler = {
@@ -1300,25 +1299,22 @@ void ceph_security_invalidate_secctx(struct inode *inode)
 }
 
 static int ceph_xattr_set_security_label(const struct xattr_handler *handler,
-				    struct dentry *unused, struct inode *inode,
-				    const char *key, const void *buf,
-				    size_t buflen, int flags)
+					 struct xattr_gs_args *args)
 {
-	if (security_ismaclabel(key)) {
-		const char *name = xattr_full_name(handler, key);
-		return __ceph_setxattr(inode, name, buf, buflen, flags);
-	}
+	if (security_ismaclabel(args->name))
+		return __ceph_setxattr(args->inode,
+				       xattr_full_name(handler, args->name),
+				       args->value, args->size, args->flags);
 	return  -EOPNOTSUPP;
 }
 
 static int ceph_xattr_get_security_label(const struct xattr_handler *handler,
-				    struct dentry *unused, struct inode *inode,
-				    const char *key, void *buf, size_t buflen)
+					 struct xattr_gs_args *args)
 {
-	if (security_ismaclabel(key)) {
-		const char *name = xattr_full_name(handler, key);
-		return __ceph_getxattr(inode, name, buf, buflen);
-	}
+	if (security_ismaclabel(args->name))
+		return __ceph_getxattr(args->inode,
+				       xattr_full_name(handler, args->name),
+				       args->buffer, args->size);
 	return  -EOPNOTSUPP;
 }
 
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 9076150758d8..2506d12c7e5d 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -48,13 +48,11 @@
 enum { XATTR_USER, XATTR_CIFS_ACL, XATTR_ACL_ACCESS, XATTR_ACL_DEFAULT };
 
 static int cifs_xattr_set(const struct xattr_handler *handler,
-			  struct dentry *dentry, struct inode *inode,
-			  const char *name, const void *value,
-			  size_t size, int flags)
+			  struct xattr_gs_args *args)
 {
 	int rc = -EOPNOTSUPP;
 	unsigned int xid;
-	struct super_block *sb = dentry->d_sb;
+	struct super_block *sb = args->dentry->d_sb;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct tcon_link *tlink;
 	struct cifs_tcon *pTcon;
@@ -67,7 +65,7 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
 
 	xid = get_xid();
 
-	full_path = build_path_from_dentry(dentry);
+	full_path = build_path_from_dentry(args->dentry);
 	if (full_path == NULL) {
 		rc = -ENOMEM;
 		goto out;
@@ -78,7 +76,7 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
 	/* if proc/fs/cifs/streamstoxattr is set then
 		search server for EAs or streams to
 		returns as xattrs */
-	if (size > MAX_EA_VALUE_SIZE) {
+	if (args->size > MAX_EA_VALUE_SIZE) {
 		cifs_dbg(FYI, "size of EA value too large\n");
 		rc = -EOPNOTSUPP;
 		goto out;
@@ -91,29 +89,30 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
 
 		if (pTcon->ses->server->ops->set_EA)
 			rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
-				full_path, name, value, (__u16)size,
+				full_path, args->name,
+				args->value, (__u16)args->size,
 				cifs_sb->local_nls, cifs_sb);
 		break;
 
 	case XATTR_CIFS_ACL: {
 		struct cifs_ntsd *pacl;
 
-		if (!value)
+		if (!args->value)
 			goto out;
-		pacl = kmalloc(size, GFP_KERNEL);
+		pacl = kmalloc(args->size, GFP_KERNEL);
 		if (!pacl) {
 			rc = -ENOMEM;
 		} else {
-			memcpy(pacl, value, size);
-			if (value &&
+			memcpy(pacl, args->value, args->size);
+			if (args->value &&
 			    pTcon->ses->server->ops->set_acl)
 				rc = pTcon->ses->server->ops->set_acl(pacl,
-						size, inode,
+						args->size, args->inode,
 						full_path, CIFS_ACL_DACL);
 			else
 				rc = -EOPNOTSUPP;
 			if (rc == 0) /* force revalidate of the inode */
-				CIFS_I(inode)->time = 0;
+				CIFS_I(args->inode)->time = 0;
 			kfree(pacl);
 		}
 		break;
@@ -121,11 +120,11 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
 
 	case XATTR_ACL_ACCESS:
 #ifdef CONFIG_CIFS_POSIX
-		if (!value)
+		if (!args->value)
 			goto out;
 		if (sb->s_flags & SB_POSIXACL)
 			rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
-				value, (const int)size,
+				args->value, (const int)args->size,
 				ACL_TYPE_ACCESS, cifs_sb->local_nls,
 				cifs_remap(cifs_sb));
 #endif  /* CONFIG_CIFS_POSIX */
@@ -133,11 +132,11 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
 
 	case XATTR_ACL_DEFAULT:
 #ifdef CONFIG_CIFS_POSIX
-		if (!value)
+		if (!args->value)
 			goto out;
 		if (sb->s_flags & SB_POSIXACL)
 			rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
-				value, (const int)size,
+				args->value, (const int)args->size,
 				ACL_TYPE_DEFAULT, cifs_sb->local_nls,
 				cifs_remap(cifs_sb));
 #endif  /* CONFIG_CIFS_POSIX */
@@ -198,12 +197,11 @@ static int cifs_creation_time_get(struct dentry *dentry, struct inode *inode,
 
 
 static int cifs_xattr_get(const struct xattr_handler *handler,
-			  struct dentry *dentry, struct inode *inode,
-			  const char *name, void *value, size_t size)
+			  struct xattr_gs_args *args)
 {
 	ssize_t rc = -EOPNOTSUPP;
 	unsigned int xid;
-	struct super_block *sb = dentry->d_sb;
+	struct super_block *sb = args->dentry->d_sb;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct tcon_link *tlink;
 	struct cifs_tcon *pTcon;
@@ -216,7 +214,7 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
 
 	xid = get_xid();
 
-	full_path = build_path_from_dentry(dentry);
+	full_path = build_path_from_dentry(args->dentry);
 	if (full_path == NULL) {
 		rc = -ENOMEM;
 		goto out;
@@ -225,14 +223,17 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
 	/* return alt name if available as pseudo attr */
 	switch (handler->flags) {
 	case XATTR_USER:
-		cifs_dbg(FYI, "%s:querying user xattr %s\n", __func__, name);
-		if ((strcmp(name, CIFS_XATTR_ATTRIB) == 0) ||
-		    (strcmp(name, SMB3_XATTR_ATTRIB) == 0)) {
-			rc = cifs_attrib_get(dentry, inode, value, size);
+		cifs_dbg(FYI, "%s:querying user xattr %s\n", __func__,
+			 args->name);
+		if ((strcmp(args->name, CIFS_XATTR_ATTRIB) == 0) ||
+		    (strcmp(args->name, SMB3_XATTR_ATTRIB) == 0)) {
+			rc = cifs_attrib_get(args->dentry, args->inode,
+					     args->buffer, args->size);
 			break;
-		} else if ((strcmp(name, CIFS_XATTR_CREATETIME) == 0) ||
-		    (strcmp(name, SMB3_XATTR_CREATETIME) == 0)) {
-			rc = cifs_creation_time_get(dentry, inode, value, size);
+		} else if ((strcmp(args->name, CIFS_XATTR_CREATETIME) == 0) ||
+		    (strcmp(args->name, SMB3_XATTR_CREATETIME) == 0)) {
+			rc = cifs_creation_time_get(args->dentry, args->inode,
+						    args->buffer, args->size);
 			break;
 		}
 
@@ -241,7 +242,8 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
 
 		if (pTcon->ses->server->ops->query_all_EAs)
 			rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
-				full_path, name, value, size, cifs_sb);
+				full_path, args->name,
+				args->buffer, args->size, cifs_sb);
 		break;
 
 	case XATTR_CIFS_ACL: {
@@ -252,17 +254,17 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
 			goto out; /* rc already EOPNOTSUPP */
 
 		pacl = pTcon->ses->server->ops->get_acl(cifs_sb,
-				inode, full_path, &acllen);
+				args->inode, full_path, &acllen);
 		if (IS_ERR(pacl)) {
 			rc = PTR_ERR(pacl);
 			cifs_dbg(VFS, "%s: error %zd getting sec desc\n",
 				 __func__, rc);
 		} else {
-			if (value) {
-				if (acllen > size)
+			if (args->buffer) {
+				if (acllen > args->size)
 					acllen = -ERANGE;
 				else
-					memcpy(value, pacl, acllen);
+					memcpy(args->buffer, pacl, acllen);
 			}
 			rc = acllen;
 			kfree(pacl);
@@ -274,7 +276,7 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
 #ifdef CONFIG_CIFS_POSIX
 		if (sb->s_flags & SB_POSIXACL)
 			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
-				value, size, ACL_TYPE_ACCESS,
+				args->buffer, args->size, ACL_TYPE_ACCESS,
 				cifs_sb->local_nls,
 				cifs_remap(cifs_sb));
 #endif  /* CONFIG_CIFS_POSIX */
@@ -284,7 +286,7 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
 #ifdef CONFIG_CIFS_POSIX
 		if (sb->s_flags & SB_POSIXACL)
 			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
-				value, size, ACL_TYPE_DEFAULT,
+				args->buffer, args->size, ACL_TYPE_DEFAULT,
 				cifs_sb->local_nls,
 				cifs_remap(cifs_sb));
 #endif  /* CONFIG_CIFS_POSIX */
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index f91db24bbf3b..5fbda6491920 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -1114,20 +1114,24 @@ ecryptfs_write_metadata_to_xattr(struct dentry *ecryptfs_dentry,
 				 char *page_virt, size_t size)
 {
 	int rc;
-	struct dentry *lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
-	struct inode *lower_inode = d_inode(lower_dentry);
+	struct xattr_gs_args lower = {};
 
-	if (!(lower_inode->i_opflags & IOP_XATTR)) {
+	lower.dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
+	lower.inode = d_inode(lower.dentry);
+
+	if (!(lower.inode->i_opflags & IOP_XATTR)) {
 		rc = -EOPNOTSUPP;
 		goto out;
 	}
 
-	inode_lock(lower_inode);
-	rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
-			    page_virt, size, 0);
+	lower.name = ECRYPTFS_XATTR_NAME;
+	lower.value = page_virt;
+	lower.size = size;
+	inode_lock(lower.inode);
+	rc = __vfs_setxattr(&lower);
 	if (!rc && ecryptfs_inode)
-		fsstack_copy_attr_all(ecryptfs_inode, lower_inode);
-	inode_unlock(lower_inode);
+		fsstack_copy_attr_all(ecryptfs_inode, lower.inode);
+	inode_unlock(lower.inode);
 out:
 	return rc;
 }
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 18426f4855f1..fc4435847a45 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -1009,16 +1009,24 @@ ecryptfs_setxattr(struct dentry *dentry, struct inode *inode,
 
 ssize_t
 ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode,
-			const char *name, void *value, size_t size)
+			const char *name, void *buffer, size_t size)
 {
 	int rc;
+	struct xattr_gs_args args;
 
 	if (!(lower_inode->i_opflags & IOP_XATTR)) {
 		rc = -EOPNOTSUPP;
 		goto out;
 	}
+	memset(&args, 0, sizeof(args));
+	args.dentry = lower_dentry;
+	args.inode = lower_inode;
+	args.name = name;
+	args.buffer = buffer;
+	args.size = size;
+	args.flags = XATTR_NOSECURITY;
 	inode_lock(lower_inode);
-	rc = __vfs_getxattr(lower_dentry, lower_inode, name, value, size);
+	rc = __vfs_getxattr(&args);
 	inode_unlock(lower_inode);
 out:
 	return rc;
@@ -1102,23 +1110,23 @@ const struct inode_operations ecryptfs_main_iops = {
 };
 
 static int ecryptfs_xattr_get(const struct xattr_handler *handler,
-			      struct dentry *dentry, struct inode *inode,
-			      const char *name, void *buffer, size_t size)
+			      struct xattr_gs_args *args)
 {
-	return ecryptfs_getxattr(dentry, inode, name, buffer, size);
+	return ecryptfs_getxattr(args->dentry, args->inode, args->name,
+				 args->buffer, args->size);
 }
 
 static int ecryptfs_xattr_set(const struct xattr_handler *handler,
-			      struct dentry *dentry, struct inode *inode,
-			      const char *name, const void *value, size_t size,
-			      int flags)
+			      struct xattr_gs_args *args)
 {
-	if (value)
-		return ecryptfs_setxattr(dentry, inode, name, value, size, flags);
-	else {
-		BUG_ON(flags != XATTR_REPLACE);
-		return ecryptfs_removexattr(dentry, inode, name);
-	}
+	if (args->value)
+		return ecryptfs_setxattr(args->dentry, args->inode, args->name,
+					 args->value, args->size, args->flags);
+	else if (args->flags != XATTR_REPLACE)
+		return -EINVAL;
+	else
+		return ecryptfs_removexattr(args->dentry, args->inode,
+					    args->name);
 }
 
 static const struct xattr_handler ecryptfs_xattr_handler = {
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index cffa0c1ec829..90dc0354ec5e 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -402,37 +402,40 @@ struct kmem_cache *ecryptfs_xattr_cache;
 
 static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
 {
-	ssize_t size;
-	void *xattr_virt;
-	struct dentry *lower_dentry =
-		ecryptfs_inode_to_private(ecryptfs_inode)->lower_file->f_path.dentry;
-	struct inode *lower_inode = d_inode(lower_dentry);
+	struct xattr_gs_args args;
 	int rc;
 
-	if (!(lower_inode->i_opflags & IOP_XATTR)) {
+	memset(&args, 0, sizeof(args));
+	args.dentry = ecryptfs_inode_to_private(ecryptfs_inode)->
+		lower_file->f_path.dentry;
+	args.inode = d_inode(args.dentry);
+	if (!(args.inode->i_opflags & IOP_XATTR)) {
 		printk(KERN_WARNING
 		       "No support for setting xattr in lower filesystem\n");
 		rc = -ENOSYS;
 		goto out;
 	}
-	xattr_virt = kmem_cache_alloc(ecryptfs_xattr_cache, GFP_KERNEL);
-	if (!xattr_virt) {
+	args.buffer = kmem_cache_alloc(ecryptfs_xattr_cache, GFP_KERNEL);
+	if (!args.buffer) {
 		rc = -ENOMEM;
 		goto out;
 	}
-	inode_lock(lower_inode);
-	size = __vfs_getxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
-			      xattr_virt, PAGE_SIZE);
-	if (size < 0)
-		size = 8;
-	put_unaligned_be64(i_size_read(ecryptfs_inode), xattr_virt);
-	rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
-			    xattr_virt, size, 0);
-	inode_unlock(lower_inode);
+	args.name = ECRYPTFS_XATTR_NAME;
+	args.size = PAGE_SIZE;
+	args.flags = XATTR_NOSECURITY;
+	inode_lock(args.inode);
+	args.size = __vfs_getxattr(&args);
+	if (args.size < 0)
+		args.size = 8;
+	put_unaligned_be64(i_size_read(ecryptfs_inode), args.buffer);
+	args.flags = 0;
+	args.value = args.buffer;
+	rc = __vfs_setxattr(&args);
+	inode_unlock(args.inode);
 	if (rc)
 		printk(KERN_ERR "Error whilst attempting to write inode size "
 		       "to lower file xattr; rc = [%d]\n", rc);
-	kmem_cache_free(ecryptfs_xattr_cache, xattr_virt);
+	kmem_cache_free(ecryptfs_xattr_cache, args.buffer);
 out:
 	return rc;
 }
diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
index 9a682e440acb..d651d4a7c9ca 100644
--- a/fs/ext2/xattr_security.c
+++ b/fs/ext2/xattr_security.c
@@ -10,21 +10,19 @@
 
 static int
 ext2_xattr_security_get(const struct xattr_handler *handler,
-			struct dentry *unused, struct inode *inode,
-			const char *name, void *buffer, size_t size)
+			struct xattr_gs_args *args)
 {
-	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
-			      buffer, size);
+	return ext2_xattr_get(args->inode, EXT2_XATTR_INDEX_SECURITY,
+			      args->name, args->buffer, args->size);
 }
 
 static int
 ext2_xattr_security_set(const struct xattr_handler *handler,
-			struct dentry *unused, struct inode *inode,
-			const char *name, const void *value,
-			size_t size, int flags)
+			struct xattr_gs_args *args)
 {
-	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,
-			      value, size, flags);
+	return ext2_xattr_set(args->inode, EXT2_XATTR_INDEX_SECURITY,
+			      args->name, args->value, args->size,
+			      args->flags);
 }
 
 static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
diff --git a/fs/ext2/xattr_trusted.c b/fs/ext2/xattr_trusted.c
index 49add1107850..41390dd0386a 100644
--- a/fs/ext2/xattr_trusted.c
+++ b/fs/ext2/xattr_trusted.c
@@ -17,21 +17,18 @@ ext2_xattr_trusted_list(struct dentry *dentry)
 
 static int
 ext2_xattr_trusted_get(const struct xattr_handler *handler,
-		       struct dentry *unused, struct inode *inode,
-		       const char *name, void *buffer, size_t size)
+		       struct xattr_gs_args *args)
 {
-	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_TRUSTED, name,
-			      buffer, size);
+	return ext2_xattr_get(args->inode, EXT2_XATTR_INDEX_TRUSTED, args->name,
+			      args->buffer, args->size);
 }
 
 static int
 ext2_xattr_trusted_set(const struct xattr_handler *handler,
-		       struct dentry *unused, struct inode *inode,
-		       const char *name, const void *value,
-		       size_t size, int flags)
+		       struct xattr_gs_args *args)
 {
-	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_TRUSTED, name,
-			      value, size, flags);
+	return ext2_xattr_set(args->inode, EXT2_XATTR_INDEX_TRUSTED, args->name,
+			      args->value, args->size, args->flags);
 }
 
 const struct xattr_handler ext2_xattr_trusted_handler = {
diff --git a/fs/ext2/xattr_user.c b/fs/ext2/xattr_user.c
index c243a3b4d69d..1ef881890dde 100644
--- a/fs/ext2/xattr_user.c
+++ b/fs/ext2/xattr_user.c
@@ -19,26 +19,23 @@ ext2_xattr_user_list(struct dentry *dentry)
 
 static int
 ext2_xattr_user_get(const struct xattr_handler *handler,
-		    struct dentry *unused, struct inode *inode,
-		    const char *name, void *buffer, size_t size)
+		    struct xattr_gs_args *args)
 {
-	if (!test_opt(inode->i_sb, XATTR_USER))
+	if (!test_opt(args->inode->i_sb, XATTR_USER))
 		return -EOPNOTSUPP;
-	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER,
-			      name, buffer, size);
+	return ext2_xattr_get(args->inode, EXT2_XATTR_INDEX_USER, args->name,
+			      args->buffer, args->size);
 }
 
 static int
 ext2_xattr_user_set(const struct xattr_handler *handler,
-		    struct dentry *unused, struct inode *inode,
-		    const char *name, const void *value,
-		    size_t size, int flags)
+		    struct xattr_gs_args *args)
 {
-	if (!test_opt(inode->i_sb, XATTR_USER))
+	if (!test_opt(args->inode->i_sb, XATTR_USER))
 		return -EOPNOTSUPP;
 
-	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_USER,
-			      name, value, size, flags);
+	return ext2_xattr_set(args->inode, EXT2_XATTR_INDEX_USER, args->name,
+			      args->value, args->size, args->flags);
 }
 
 const struct xattr_handler ext2_xattr_user_handler = {
diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c
index 197a9d8a15ef..71ed703e01fe 100644
--- a/fs/ext4/xattr_security.c
+++ b/fs/ext4/xattr_security.c
@@ -14,21 +14,18 @@
 
 static int
 ext4_xattr_security_get(const struct xattr_handler *handler,
-			struct dentry *unused, struct inode *inode,
-			const char *name, void *buffer, size_t size)
+			struct xattr_gs_args *args)
 {
-	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY,
-			      name, buffer, size);
+	return ext4_xattr_get(args->inode, EXT4_XATTR_INDEX_SECURITY,
+			      args->name, args->buffer, args->size);
 }
 
 static int
 ext4_xattr_security_set(const struct xattr_handler *handler,
-			struct dentry *unused, struct inode *inode,
-			const char *name, const void *value,
-			size_t size, int flags)
+			struct xattr_gs_args *args)
 {
-	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY,
-			      name, value, size, flags);
+	return ext4_xattr_set(args->inode, EXT4_XATTR_INDEX_SECURITY,
+			      args->name, args->value, args->size, args->flags);
 }
 
 static int
diff --git a/fs/ext4/xattr_trusted.c b/fs/ext4/xattr_trusted.c
index e9389e5d75c3..ed347a978102 100644
--- a/fs/ext4/xattr_trusted.c
+++ b/fs/ext4/xattr_trusted.c
@@ -21,21 +21,18 @@ ext4_xattr_trusted_list(struct dentry *dentry)
 
 static int
 ext4_xattr_trusted_get(const struct xattr_handler *handler,
-		       struct dentry *unused, struct inode *inode,
-		       const char *name, void *buffer, size_t size)
+		       struct xattr_gs_args *args)
 {
-	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_TRUSTED,
-			      name, buffer, size);
+	return ext4_xattr_get(args->inode, EXT4_XATTR_INDEX_TRUSTED,
+			      args->name, args->buffer, args->size);
 }
 
 static int
 ext4_xattr_trusted_set(const struct xattr_handler *handler,
-		       struct dentry *unused, struct inode *inode,
-		       const char *name, const void *value,
-		       size_t size, int flags)
+		       struct xattr_gs_args *args)
 {
-	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_TRUSTED,
-			      name, value, size, flags);
+	return ext4_xattr_set(args->inode, EXT4_XATTR_INDEX_TRUSTED,
+			      args->name, args->value, args->size, args->flags);
 }
 
 const struct xattr_handler ext4_xattr_trusted_handler = {
diff --git a/fs/ext4/xattr_user.c b/fs/ext4/xattr_user.c
index d4546184b34b..86e9f5a9284d 100644
--- a/fs/ext4/xattr_user.c
+++ b/fs/ext4/xattr_user.c
@@ -20,25 +20,22 @@ ext4_xattr_user_list(struct dentry *dentry)
 
 static int
 ext4_xattr_user_get(const struct xattr_handler *handler,
-		    struct dentry *unused, struct inode *inode,
-		    const char *name, void *buffer, size_t size)
+		    struct xattr_gs_args *args)
 {
-	if (!test_opt(inode->i_sb, XATTR_USER))
+	if (!test_opt(args->inode->i_sb, XATTR_USER))
 		return -EOPNOTSUPP;
-	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER,
-			      name, buffer, size);
+	return ext4_xattr_get(args->inode, EXT4_XATTR_INDEX_USER,
+			      args->name, args->buffer, args->size);
 }
 
 static int
 ext4_xattr_user_set(const struct xattr_handler *handler,
-		    struct dentry *unused, struct inode *inode,
-		    const char *name, const void *value,
-		    size_t size, int flags)
+		    struct xattr_gs_args *args)
 {
-	if (!test_opt(inode->i_sb, XATTR_USER))
+	if (!test_opt(args->inode->i_sb, XATTR_USER))
 		return -EOPNOTSUPP;
-	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,
-			      name, value, size, flags);
+	return ext4_xattr_set(args->inode, EXT4_XATTR_INDEX_USER,
+			      args->name, args->value, args->size, args->flags);
 }
 
 const struct xattr_handler ext4_xattr_user_handler = {
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index b32c45621679..4fd47b84616f 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -23,10 +23,9 @@
 #include "xattr.h"
 
 static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
-		struct dentry *unused, struct inode *inode,
-		const char *name, void *buffer, size_t size)
+				  struct xattr_gs_args *args)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+	struct f2fs_sb_info *sbi = F2FS_SB(args->inode->i_sb);
 
 	switch (handler->flags) {
 	case F2FS_XATTR_INDEX_USER:
@@ -39,16 +38,14 @@ static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
 	default:
 		return -EINVAL;
 	}
-	return f2fs_getxattr(inode, handler->flags, name,
-			     buffer, size, NULL);
+	return f2fs_getxattr(args->inode, handler->flags, args->name,
+			     args->buffer, args->size, NULL);
 }
 
 static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
-		struct dentry *unused, struct inode *inode,
-		const char *name, const void *value,
-		size_t size, int flags)
+				  struct xattr_gs_args *args)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+	struct f2fs_sb_info *sbi = F2FS_SB(args->inode->i_sb);
 
 	switch (handler->flags) {
 	case F2FS_XATTR_INDEX_USER:
@@ -61,8 +58,8 @@ static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
 	default:
 		return -EINVAL;
 	}
-	return f2fs_setxattr(inode, handler->flags, name,
-					value, size, NULL, flags);
+	return f2fs_setxattr(args->inode, handler->flags, args->name,
+			     args->value, args->size, NULL, args->flags);
 }
 
 static bool f2fs_xattr_user_list(struct dentry *dentry)
@@ -78,36 +75,33 @@ static bool f2fs_xattr_trusted_list(struct dentry *dentry)
 }
 
 static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
-		struct dentry *unused, struct inode *inode,
-		const char *name, void *buffer, size_t size)
+				 struct xattr_gs_args *args)
 {
-	if (buffer)
-		*((char *)buffer) = F2FS_I(inode)->i_advise;
+	if (args->buffer)
+		*((char *)args->buffer) = F2FS_I(args->inode)->i_advise;
 	return sizeof(char);
 }
 
 static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
-		struct dentry *unused, struct inode *inode,
-		const char *name, const void *value,
-		size_t size, int flags)
+				 struct xattr_gs_args *args)
 {
-	unsigned char old_advise = F2FS_I(inode)->i_advise;
+	unsigned char old_advise = F2FS_I(args->inode)->i_advise;
 	unsigned char new_advise;
 
-	if (!inode_owner_or_capable(inode))
+	if (!inode_owner_or_capable(args->inode))
 		return -EPERM;
-	if (value == NULL)
+	if (args->value == NULL)
 		return -EINVAL;
 
-	new_advise = *(char *)value;
+	new_advise = *(char *)args->value;
 	if (new_advise & ~FADVISE_MODIFIABLE_BITS)
 		return -EINVAL;
 
 	new_advise = new_advise & FADVISE_MODIFIABLE_BITS;
 	new_advise |= old_advise & ~FADVISE_MODIFIABLE_BITS;
 
-	F2FS_I(inode)->i_advise = new_advise;
-	f2fs_mark_inode_dirty_sync(inode, true);
+	F2FS_I(args->inode)->i_advise = new_advise;
+	f2fs_mark_inode_dirty_sync(args->inode, true);
 	return 0;
 }
 
diff --git a/fs/fuse/xattr.c b/fs/fuse/xattr.c
index 433717640f78..8b8fb719d498 100644
--- a/fs/fuse/xattr.c
+++ b/fs/fuse/xattr.c
@@ -175,21 +175,19 @@ int fuse_removexattr(struct inode *inode, const char *name)
 }
 
 static int fuse_xattr_get(const struct xattr_handler *handler,
-			 struct dentry *dentry, struct inode *inode,
-			 const char *name, void *value, size_t size)
+			  struct xattr_gs_args *args)
 {
-	return fuse_getxattr(inode, name, value, size);
+	return fuse_getxattr(args->inode, args->name, args->buffer, args->size);
 }
 
 static int fuse_xattr_set(const struct xattr_handler *handler,
-			  struct dentry *dentry, struct inode *inode,
-			  const char *name, const void *value, size_t size,
-			  int flags)
+			  struct xattr_gs_args *args)
 {
-	if (!value)
-		return fuse_removexattr(inode, name);
+	if (!args->value)
+		return fuse_removexattr(args->inode, args->name);
 
-	return fuse_setxattr(inode, name, value, size, flags);
+	return fuse_setxattr(args->inode, args->name,
+			     args->value, args->size, args->flags);
 }
 
 static bool no_xattr_list(struct dentry *dentry)
@@ -198,16 +196,13 @@ static bool no_xattr_list(struct dentry *dentry)
 }
 
 static int no_xattr_get(const struct xattr_handler *handler,
-			struct dentry *dentry, struct inode *inode,
-			const char *name, void *value, size_t size)
+			struct xattr_gs_args *args)
 {
 	return -EOPNOTSUPP;
 }
 
 static int no_xattr_set(const struct xattr_handler *handler,
-			struct dentry *dentry, struct inode *nodee,
-			const char *name, const void *value,
-			size_t size, int flags)
+			struct xattr_gs_args *args)
 {
 	return -EOPNOTSUPP;
 }
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index bbe593d16bea..bf8e1bd17a29 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -587,10 +587,9 @@ static int __gfs2_xattr_get(struct inode *inode, const char *name,
 }
 
 static int gfs2_xattr_get(const struct xattr_handler *handler,
-			  struct dentry *unused, struct inode *inode,
-			  const char *name, void *buffer, size_t size)
+			  struct xattr_gs_args *args)
 {
-	struct gfs2_inode *ip = GFS2_I(inode);
+	struct gfs2_inode *ip = GFS2_I(args->inode);
 	struct gfs2_holder gh;
 	int ret;
 
@@ -603,7 +602,8 @@ static int gfs2_xattr_get(const struct xattr_handler *handler,
 	} else {
 		gfs2_holder_mark_uninitialized(&gh);
 	}
-	ret = __gfs2_xattr_get(inode, name, buffer, size, handler->flags);
+	ret = __gfs2_xattr_get(args->inode, args->name,
+			       args->buffer, args->size, handler->flags);
 	if (gfs2_holder_initialized(&gh))
 		gfs2_glock_dq_uninit(&gh);
 	return ret;
@@ -1214,11 +1214,9 @@ int __gfs2_xattr_set(struct inode *inode, const char *name,
 }
 
 static int gfs2_xattr_set(const struct xattr_handler *handler,
-			  struct dentry *unused, struct inode *inode,
-			  const char *name, const void *value,
-			  size_t size, int flags)
+			  struct xattr_gs_args *args)
 {
-	struct gfs2_inode *ip = GFS2_I(inode);
+	struct gfs2_inode *ip = GFS2_I(args->inode);
 	struct gfs2_holder gh;
 	int ret;
 
@@ -1237,7 +1235,9 @@ static int gfs2_xattr_set(const struct xattr_handler *handler,
 			return -EIO;
 		gfs2_holder_mark_uninitialized(&gh);
 	}
-	ret = __gfs2_xattr_set(inode, name, value, size, flags, handler->flags);
+	ret = __gfs2_xattr_set(args->inode, args->name,
+			       args->value, args->size,
+			       args->flags, handler->flags);
 	if (gfs2_holder_initialized(&gh))
 		gfs2_glock_dq_uninit(&gh);
 	return ret;
diff --git a/fs/hfs/attr.c b/fs/hfs/attr.c
index 74fa62643136..b3355368dc58 100644
--- a/fs/hfs/attr.c
+++ b/fs/hfs/attr.c
@@ -114,21 +114,20 @@ static ssize_t __hfs_getxattr(struct inode *inode, enum hfs_xattr_type type,
 }
 
 static int hfs_xattr_get(const struct xattr_handler *handler,
-			 struct dentry *unused, struct inode *inode,
-			 const char *name, void *value, size_t size)
+			 struct xattr_gs_args *args)
 {
-	return __hfs_getxattr(inode, handler->flags, value, size);
+	return __hfs_getxattr(args->inode, handler->flags,
+			      args->buffer, args->size);
 }
 
 static int hfs_xattr_set(const struct xattr_handler *handler,
-			 struct dentry *unused, struct inode *inode,
-			 const char *name, const void *value, size_t size,
-			 int flags)
+			 struct xattr_gs_args *args)
 {
-	if (!value)
+	if (!args->value)
 		return -EOPNOTSUPP;
 
-	return __hfs_setxattr(inode, handler->flags, value, size, flags);
+	return __hfs_setxattr(args->inode, handler->flags,
+			      args->value, args->size, args->flags);
 }
 
 static const struct xattr_handler hfs_creator_handler = {
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
index bb0b27d88e50..b6cc7f18bce8 100644
--- a/fs/hfsplus/xattr.c
+++ b/fs/hfsplus/xattr.c
@@ -838,14 +838,13 @@ static int hfsplus_removexattr(struct inode *inode, const char *name)
 }
 
 static int hfsplus_osx_getxattr(const struct xattr_handler *handler,
-				struct dentry *unused, struct inode *inode,
-				const char *name, void *buffer, size_t size)
+				struct xattr_gs_args *args)
 {
 	/*
 	 * Don't allow retrieving properly prefixed attributes
 	 * by prepending them with "osx."
 	 */
-	if (is_known_namespace(name))
+	if (is_known_namespace(args->name))
 		return -EOPNOTSUPP;
 
 	/*
@@ -854,19 +853,18 @@ static int hfsplus_osx_getxattr(const struct xattr_handler *handler,
 	 * creates), so we pass the name through unmodified (after
 	 * ensuring it doesn't conflict with another namespace).
 	 */
-	return __hfsplus_getxattr(inode, name, buffer, size);
+	return __hfsplus_getxattr(args->inode, args->name,
+				  args->buffer, args->size);
 }
 
 static int hfsplus_osx_setxattr(const struct xattr_handler *handler,
-				struct dentry *unused, struct inode *inode,
-				const char *name, const void *buffer,
-				size_t size, int flags)
+				struct xattr_gs_args *args)
 {
 	/*
 	 * Don't allow setting properly prefixed attributes
 	 * by prepending them with "osx."
 	 */
-	if (is_known_namespace(name))
+	if (is_known_namespace(args->name))
 		return -EOPNOTSUPP;
 
 	/*
@@ -875,7 +873,8 @@ static int hfsplus_osx_setxattr(const struct xattr_handler *handler,
 	 * creates), so we pass the name through unmodified (after
 	 * ensuring it doesn't conflict with another namespace).
 	 */
-	return __hfsplus_setxattr(inode, name, buffer, size, flags);
+	return __hfsplus_setxattr(args->inode, args->name,
+				  args->value, args->size, args->flags);
 }
 
 const struct xattr_handler hfsplus_xattr_osx_handler = {
diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c
index cfbe6a3bfb1e..8a8185eca12e 100644
--- a/fs/hfsplus/xattr_security.c
+++ b/fs/hfsplus/xattr_security.c
@@ -14,20 +14,19 @@
 #include "xattr.h"
 
 static int hfsplus_security_getxattr(const struct xattr_handler *handler,
-				     struct dentry *unused, struct inode *inode,
-				     const char *name, void *buffer, size_t size)
+				     struct xattr_gs_args *args)
 {
-	return hfsplus_getxattr(inode, name, buffer, size,
+	return hfsplus_getxattr(args->inode, args->name,
+				args->buffer, args->size,
 				XATTR_SECURITY_PREFIX,
 				XATTR_SECURITY_PREFIX_LEN);
 }
 
 static int hfsplus_security_setxattr(const struct xattr_handler *handler,
-				     struct dentry *unused, struct inode *inode,
-				     const char *name, const void *buffer,
-				     size_t size, int flags)
+				     struct xattr_gs_args *args)
 {
-	return hfsplus_setxattr(inode, name, buffer, size, flags,
+	return hfsplus_setxattr(args->inode, args->name,
+				args->value, args->size, args->flags,
 				XATTR_SECURITY_PREFIX,
 				XATTR_SECURITY_PREFIX_LEN);
 }
diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c
index fbad91e1dada..a682a2e363e7 100644
--- a/fs/hfsplus/xattr_trusted.c
+++ b/fs/hfsplus/xattr_trusted.c
@@ -13,20 +13,19 @@
 #include "xattr.h"
 
 static int hfsplus_trusted_getxattr(const struct xattr_handler *handler,
-				    struct dentry *unused, struct inode *inode,
-				    const char *name, void *buffer, size_t size)
+				    struct xattr_gs_args *args)
 {
-	return hfsplus_getxattr(inode, name, buffer, size,
+	return hfsplus_getxattr(args->inode, args->name,
+				args->buffer, args->size,
 				XATTR_TRUSTED_PREFIX,
 				XATTR_TRUSTED_PREFIX_LEN);
 }
 
 static int hfsplus_trusted_setxattr(const struct xattr_handler *handler,
-				    struct dentry *unused, struct inode *inode,
-				    const char *name, const void *buffer,
-				    size_t size, int flags)
+				    struct xattr_gs_args *args)
 {
-	return hfsplus_setxattr(inode, name, buffer, size, flags,
+	return hfsplus_setxattr(args->inode, args->name,
+				args->buffer, args->size, args->flags,
 				XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
 }
 
diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c
index 74d19faf255e..9b58d7ec263d 100644
--- a/fs/hfsplus/xattr_user.c
+++ b/fs/hfsplus/xattr_user.c
@@ -13,20 +13,19 @@
 #include "xattr.h"
 
 static int hfsplus_user_getxattr(const struct xattr_handler *handler,
-				 struct dentry *unused, struct inode *inode,
-				 const char *name, void *buffer, size_t size)
+				 struct xattr_gs_args *args)
 {
 
-	return hfsplus_getxattr(inode, name, buffer, size,
+	return hfsplus_getxattr(args->inode, args->name,
+				args->buffer, args->size,
 				XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
 }
 
 static int hfsplus_user_setxattr(const struct xattr_handler *handler,
-				 struct dentry *unused, struct inode *inode,
-				 const char *name, const void *buffer,
-				 size_t size, int flags)
+				 struct xattr_gs_args *args)
 {
-	return hfsplus_setxattr(inode, name, buffer, size, flags,
+	return hfsplus_setxattr(args->inode, args->name,
+				args->value, args->size, args->flags,
 				XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
 }
 
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index c2332e30f218..6aa552db3807 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -49,20 +49,18 @@ int jffs2_init_security(struct inode *inode, struct inode *dir,
 
 /* ---- XATTR Handler for "security.*" ----------------- */
 static int jffs2_security_getxattr(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, void *buffer, size_t size)
+				   struct xattr_gs_args *args)
 {
-	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_SECURITY,
-				 name, buffer, size);
+	return do_jffs2_getxattr(args->inode, JFFS2_XPREFIX_SECURITY,
+				 args->name, args->buffer, args->size);
 }
 
 static int jffs2_security_setxattr(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, const void *buffer,
-				   size_t size, int flags)
+				   struct xattr_gs_args *args)
 {
-	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
-				 name, buffer, size, flags);
+	return do_jffs2_setxattr(args->inode, JFFS2_XPREFIX_SECURITY,
+				 args->name, args->value, args->size,
+				 args->flags);
 }
 
 const struct xattr_handler jffs2_security_xattr_handler = {
diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c
index 5d6030826c52..5d235175d6fd 100644
--- a/fs/jffs2/xattr_trusted.c
+++ b/fs/jffs2/xattr_trusted.c
@@ -17,20 +17,18 @@
 #include "nodelist.h"
 
 static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
-				  struct dentry *unused, struct inode *inode,
-				  const char *name, void *buffer, size_t size)
+				  struct xattr_gs_args *args)
 {
-	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED,
-				 name, buffer, size);
+	return do_jffs2_getxattr(args->inode, JFFS2_XPREFIX_TRUSTED,
+				 args->name, args->buffer, args->size);
 }
 
 static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
-				  struct dentry *unused, struct inode *inode,
-				  const char *name, const void *buffer,
-				  size_t size, int flags)
+				  struct xattr_gs_args *args)
 {
-	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED,
-				 name, buffer, size, flags);
+	return do_jffs2_setxattr(args->inode, JFFS2_XPREFIX_TRUSTED,
+				 args->name, args->value, args->size,
+				 args->flags);
 }
 
 static bool jffs2_trusted_listxattr(struct dentry *dentry)
diff --git a/fs/jffs2/xattr_user.c b/fs/jffs2/xattr_user.c
index 9d027b4abcf9..a35a0785e72b 100644
--- a/fs/jffs2/xattr_user.c
+++ b/fs/jffs2/xattr_user.c
@@ -17,20 +17,18 @@
 #include "nodelist.h"
 
 static int jffs2_user_getxattr(const struct xattr_handler *handler,
-			       struct dentry *unused, struct inode *inode,
-			       const char *name, void *buffer, size_t size)
+			       struct xattr_gs_args *args)
 {
-	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER,
-				 name, buffer, size);
+	return do_jffs2_getxattr(args->inode, JFFS2_XPREFIX_USER,
+				 args->name, args->buffer, args->size);
 }
 
 static int jffs2_user_setxattr(const struct xattr_handler *handler,
-			       struct dentry *unused, struct inode *inode,
-			       const char *name, const void *buffer,
-			       size_t size, int flags)
+			       struct xattr_gs_args *args)
 {
-	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_USER,
-				 name, buffer, size, flags);
+	return do_jffs2_setxattr(args->inode, JFFS2_XPREFIX_USER,
+				 args->name, args->value, args->size,
+				 args->flags);
 }
 
 const struct xattr_handler jffs2_user_xattr_handler = {
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index db41e7803163..225fc440ff62 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -924,39 +924,36 @@ static int __jfs_xattr_set(struct inode *inode, const char *name,
 }
 
 static int jfs_xattr_get(const struct xattr_handler *handler,
-			 struct dentry *unused, struct inode *inode,
-			 const char *name, void *value, size_t size)
+			 struct xattr_gs_args *args)
 {
-	name = xattr_full_name(handler, name);
-	return __jfs_getxattr(inode, name, value, size);
+	return __jfs_getxattr(args->inode, xattr_full_name(handler, args->name),
+			      args->buffer, args->size);
 }
 
 static int jfs_xattr_set(const struct xattr_handler *handler,
-			 struct dentry *unused, struct inode *inode,
-			 const char *name, const void *value,
-			 size_t size, int flags)
+			 struct xattr_gs_args *args)
 {
-	name = xattr_full_name(handler, name);
-	return __jfs_xattr_set(inode, name, value, size, flags);
+	return __jfs_xattr_set(args->inode,
+			       xattr_full_name(handler, args->name),
+			       args->value, args->size, args->flags);
 }
 
 static int jfs_xattr_get_os2(const struct xattr_handler *handler,
-			     struct dentry *unused, struct inode *inode,
-			     const char *name, void *value, size_t size)
+			     struct xattr_gs_args *args)
 {
-	if (is_known_namespace(name))
+	if (is_known_namespace(args->name))
 		return -EOPNOTSUPP;
-	return __jfs_getxattr(inode, name, value, size);
+	return __jfs_getxattr(args->inode, args->name,
+			      args->buffer, args->size);
 }
 
 static int jfs_xattr_set_os2(const struct xattr_handler *handler,
-			     struct dentry *unused, struct inode *inode,
-			     const char *name, const void *value,
-			     size_t size, int flags)
+			     struct xattr_gs_args *args)
 {
-	if (is_known_namespace(name))
+	if (is_known_namespace(args->name))
 		return -EOPNOTSUPP;
-	return __jfs_xattr_set(inode, name, value, size, flags);
+	return __jfs_xattr_set(args->inode, args->name,
+			       args->value, args->size, args->flags);
 }
 
 static const struct xattr_handler jfs_user_xattr_handler = {
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index f3f3984cce80..1ae646a0b20b 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -288,13 +288,13 @@ int kernfs_iop_permission(struct inode *inode, int mask)
 }
 
 int kernfs_xattr_get(struct kernfs_node *kn, const char *name,
-		     void *value, size_t size)
+		     void *buffer, size_t size)
 {
 	struct kernfs_iattrs *attrs = kernfs_iattrs_noalloc(kn);
 	if (!attrs)
 		return -ENODATA;
 
-	return simple_xattr_get(&attrs->xattrs, name, value, size);
+	return simple_xattr_get(&attrs->xattrs, name, buffer, size);
 }
 
 int kernfs_xattr_set(struct kernfs_node *kn, const char *name,
@@ -308,24 +308,21 @@ int kernfs_xattr_set(struct kernfs_node *kn, const char *name,
 }
 
 static int kernfs_vfs_xattr_get(const struct xattr_handler *handler,
-				struct dentry *unused, struct inode *inode,
-				const char *suffix, void *value, size_t size)
+				struct xattr_gs_args *args)
 {
-	const char *name = xattr_full_name(handler, suffix);
-	struct kernfs_node *kn = inode->i_private;
+	struct kernfs_node *kn = args->inode->i_private;
 
-	return kernfs_xattr_get(kn, name, value, size);
+	return kernfs_xattr_get(kn, xattr_full_name(handler, args->name),
+				args->buffer, args->size);
 }
 
 static int kernfs_vfs_xattr_set(const struct xattr_handler *handler,
-				struct dentry *unused, struct inode *inode,
-				const char *suffix, const void *value,
-				size_t size, int flags)
+				struct xattr_gs_args *args)
 {
-	const char *name = xattr_full_name(handler, suffix);
-	struct kernfs_node *kn = inode->i_private;
+	struct kernfs_node *kn = args->inode->i_private;
 
-	return kernfs_xattr_set(kn, name, value, size, flags);
+	return kernfs_xattr_set(kn, xattr_full_name(handler, args->name),
+				args->value, args->size, args->flags);
 }
 
 static const struct xattr_handler kernfs_trusted_xattr_handler = {
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 1406858bae6c..1f0388440ec9 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7209,18 +7209,15 @@ nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
 
 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *key, const void *buf,
-				   size_t buflen, int flags)
+				   struct xattr_gs_args *args)
 {
-	return nfs4_proc_set_acl(inode, buf, buflen);
+	return nfs4_proc_set_acl(args->inode, args->value, args->size);
 }
 
 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *key, void *buf, size_t buflen)
+				   struct xattr_gs_args *args)
 {
-	return nfs4_proc_get_acl(inode, buf, buflen);
+	return nfs4_proc_get_acl(args->inode, args->buffer, args->size);
 }
 
 static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
@@ -7231,22 +7228,21 @@ static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
 
 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
-				     struct dentry *unused, struct inode *inode,
-				     const char *key, const void *buf,
-				     size_t buflen, int flags)
+				     struct xattr_gs_args *args)
 {
-	if (security_ismaclabel(key))
-		return nfs4_set_security_label(inode, buf, buflen);
+	if (security_ismaclabel(args->name))
+		return nfs4_set_security_label(args->inode,
+					       args->value, args->size);
 
 	return -EOPNOTSUPP;
 }
 
 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler,
-				     struct dentry *unused, struct inode *inode,
-				     const char *key, void *buf, size_t buflen)
+				     struct xattr_gs_args *args)
 {
-	if (security_ismaclabel(key))
-		return nfs4_get_security_label(inode, buf, buflen);
+	if (security_ismaclabel(args->name))
+		return nfs4_get_security_label(args->inode,
+					       args->buffer, args->size);
 	return -EOPNOTSUPP;
 }
 
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 90c830e3758e..25ac1557e303 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -7241,20 +7241,18 @@ int ocfs2_init_security_and_acl(struct inode *dir,
  * 'security' attributes support
  */
 static int ocfs2_xattr_security_get(const struct xattr_handler *handler,
-				    struct dentry *unused, struct inode *inode,
-				    const char *name, void *buffer, size_t size)
+				    struct xattr_gs_args *args)
 {
-	return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_SECURITY,
-			       name, buffer, size);
+	return ocfs2_xattr_get(args->inode, OCFS2_XATTR_INDEX_SECURITY,
+			       args->name, args->buffer, args->size);
 }
 
 static int ocfs2_xattr_security_set(const struct xattr_handler *handler,
-				    struct dentry *unused, struct inode *inode,
-				    const char *name, const void *value,
-				    size_t size, int flags)
+				    struct xattr_gs_args *args)
 {
-	return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,
-			       name, value, size, flags);
+	return ocfs2_xattr_set(args->inode, OCFS2_XATTR_INDEX_SECURITY,
+			       args->name, args->value, args->size,
+			       args->flags);
 }
 
 static int ocfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
@@ -7313,20 +7311,18 @@ const struct xattr_handler ocfs2_xattr_security_handler = {
  * 'trusted' attributes support
  */
 static int ocfs2_xattr_trusted_get(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, void *buffer, size_t size)
+				   struct xattr_gs_args *args)
 {
-	return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_TRUSTED,
-			       name, buffer, size);
+	return ocfs2_xattr_get(args->inode, OCFS2_XATTR_INDEX_TRUSTED,
+			       args->name, args->buffer, args->size);
 }
 
 static int ocfs2_xattr_trusted_set(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, const void *value,
-				   size_t size, int flags)
+				   struct xattr_gs_args *args)
 {
-	return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_TRUSTED,
-			       name, value, size, flags);
+	return ocfs2_xattr_set(args->inode, OCFS2_XATTR_INDEX_TRUSTED,
+			       args->name, args->value, args->size,
+			       args->flags);
 }
 
 const struct xattr_handler ocfs2_xattr_trusted_handler = {
@@ -7339,29 +7335,27 @@ const struct xattr_handler ocfs2_xattr_trusted_handler = {
  * 'user' attributes support
  */
 static int ocfs2_xattr_user_get(const struct xattr_handler *handler,
-				struct dentry *unused, struct inode *inode,
-				const char *name, void *buffer, size_t size)
+				struct xattr_gs_args *args)
 {
-	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+	struct ocfs2_super *osb = OCFS2_SB(args->inode->i_sb);
 
 	if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
 		return -EOPNOTSUPP;
-	return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_USER, name,
-			       buffer, size);
+	return ocfs2_xattr_get(args->inode, OCFS2_XATTR_INDEX_USER, args->name,
+			       args->buffer, args->size);
 }
 
 static int ocfs2_xattr_user_set(const struct xattr_handler *handler,
-				struct dentry *unused, struct inode *inode,
-				const char *name, const void *value,
-				size_t size, int flags)
+				struct xattr_gs_args *args)
 {
-	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+	struct ocfs2_super *osb = OCFS2_SB(args->inode->i_sb);
 
 	if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
 		return -EOPNOTSUPP;
 
-	return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_USER,
-			       name, value, size, flags);
+	return ocfs2_xattr_set(args->inode, OCFS2_XATTR_INDEX_USER,
+			       args->name, args->value, args->size,
+			       args->flags);
 }
 
 const struct xattr_handler ocfs2_xattr_user_handler = {
diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c
index bdc285aea360..d222922af141 100644
--- a/fs/orangefs/xattr.c
+++ b/fs/orangefs/xattr.c
@@ -526,24 +526,17 @@ ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size)
 }
 
 static int orangefs_xattr_set_default(const struct xattr_handler *handler,
-				      struct dentry *unused,
-				      struct inode *inode,
-				      const char *name,
-				      const void *buffer,
-				      size_t size,
-				      int flags)
+				      struct xattr_gs_args *args)
 {
-	return orangefs_inode_setxattr(inode, name, buffer, size, flags);
+	return orangefs_inode_setxattr(args->inode, args->name,
+				       args->value, args->size, args->flags);
 }
 
 static int orangefs_xattr_get_default(const struct xattr_handler *handler,
-				      struct dentry *unused,
-				      struct inode *inode,
-				      const char *name,
-				      void *buffer,
-				      size_t size)
+				      struct xattr_gs_args *args)
 {
-	return orangefs_inode_getxattr(inode, name, buffer, size);
+	return orangefs_inode_getxattr(args->inode, args->name,
+				       args->buffer, args->size);
 
 }
 
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 7663aeb85fa3..a14d450b8564 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -318,60 +318,61 @@ bool ovl_is_private_xattr(const char *name)
 		       sizeof(OVL_XATTR_PREFIX) - 1) == 0;
 }
 
-int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char *name,
-		  const void *value, size_t size, int flags)
+int ovl_xattr_set(struct xattr_gs_args *args)
 {
 	int err;
-	struct dentry *upperdentry = ovl_i_dentry_upper(inode);
-	struct dentry *realdentry = upperdentry ?: ovl_dentry_lower(dentry);
+	struct dentry *upperdentry = ovl_i_dentry_upper(args->inode);
+	struct dentry *realdentry =
+		upperdentry ?: ovl_dentry_lower(args->dentry);
 	const struct cred *old_cred;
 
-	err = ovl_want_write(dentry);
+	err = ovl_want_write(args->dentry);
 	if (err)
 		goto out;
 
-	if (!value && !upperdentry) {
-		err = vfs_getxattr(realdentry, name, NULL, 0);
+	if (!args->value && !upperdentry) {
+		err = vfs_getxattr(realdentry, args->name, NULL, 0);
 		if (err < 0)
 			goto out_drop_write;
 	}
 
 	if (!upperdentry) {
-		err = ovl_copy_up(dentry);
+		err = ovl_copy_up(args->dentry);
 		if (err)
 			goto out_drop_write;
 
-		realdentry = ovl_dentry_upper(dentry);
+		realdentry = ovl_dentry_upper(args->dentry);
 	}
 
-	old_cred = ovl_override_creds(dentry->d_sb);
-	if (value)
-		err = vfs_setxattr(realdentry, name, value, size, flags);
+	old_cred = ovl_override_creds(args->dentry->d_sb);
+	if (args->value)
+		err = vfs_setxattr(realdentry, args->name,
+				   args->value, args->size, args->flags);
 	else {
-		WARN_ON(flags != XATTR_REPLACE);
-		err = vfs_removexattr(realdentry, name);
+		WARN_ON(args->flags != XATTR_REPLACE);
+		err = vfs_removexattr(realdentry, args->name);
 	}
 	revert_creds(old_cred);
 
 	/* copy c/mtime */
-	ovl_copyattr(d_inode(realdentry), inode);
+	ovl_copyattr(d_inode(realdentry), args->inode);
 
 out_drop_write:
-	ovl_drop_write(dentry);
+	ovl_drop_write(args->dentry);
 out:
 	return err;
 }
 
-int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char *name,
-		  void *value, size_t size)
+int ovl_xattr_get(struct xattr_gs_args *args)
 {
 	ssize_t res;
 	const struct cred *old_cred;
 	struct dentry *realdentry =
-		ovl_i_dentry_upper(inode) ?: ovl_dentry_lower(dentry);
+		ovl_i_dentry_upper(args->inode) ?:
+		ovl_dentry_lower(args->dentry);
 
-	old_cred = ovl_override_creds(dentry->d_sb);
-	res = vfs_getxattr(realdentry, name, value, size);
+	old_cred = ovl_override_creds(args->dentry->d_sb);
+	res = vfs_getxattr(realdentry, args->name, args->buffer, args->size);
 	revert_creds(old_cred);
 	return res;
 }
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 6934bcf030f0..c6a8ec049099 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -353,10 +353,8 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr);
 int ovl_getattr(const struct path *path, struct kstat *stat,
 		u32 request_mask, unsigned int flags);
 int ovl_permission(struct inode *inode, int mask);
-int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char *name,
-		  const void *value, size_t size, int flags);
-int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char *name,
-		  void *value, size_t size);
+int ovl_xattr_set(struct xattr_gs_args *args);
+int ovl_xattr_get(struct xattr_gs_args *args);
 ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size);
 struct posix_acl *ovl_get_acl(struct inode *inode, int type);
 int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags);
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index b368e2e102fa..e41359ba9159 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -853,26 +853,24 @@ static unsigned int ovl_split_lowerdirs(char *str)
 
 static int __maybe_unused
 ovl_posix_acl_xattr_get(const struct xattr_handler *handler,
-			struct dentry *dentry, struct inode *inode,
-			const char *name, void *buffer, size_t size)
+			struct xattr_gs_args *args)
 {
-	return ovl_xattr_get(dentry, inode, handler->name, buffer, size);
+	return ovl_xattr_get(args);
 }
 
 static int __maybe_unused
 ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
-			struct dentry *dentry, struct inode *inode,
-			const char *name, const void *value,
-			size_t size, int flags)
+			struct xattr_gs_args *args)
 {
-	struct dentry *workdir = ovl_workdir(dentry);
-	struct inode *realinode = ovl_inode_real(inode);
+	struct dentry *workdir = ovl_workdir(args->dentry);
+	struct inode *realinode = ovl_inode_real(args->inode);
 	struct posix_acl *acl = NULL;
 	int err;
 
 	/* Check that everything is OK before copy-up */
-	if (value) {
-		acl = posix_acl_from_xattr(&init_user_ns, value, size);
+	if (args->value) {
+		acl = posix_acl_from_xattr(&init_user_ns,
+					   args->value, args->size);
 		if (IS_ERR(acl))
 			return PTR_ERR(acl);
 	}
@@ -881,12 +879,13 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
 		goto out_acl_release;
 	if (!realinode->i_op->set_acl)
 		goto out_acl_release;
-	if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) {
+	if (handler->flags == ACL_TYPE_DEFAULT &&
+	    !S_ISDIR(args->inode->i_mode)) {
 		err = acl ? -EACCES : 0;
 		goto out_acl_release;
 	}
 	err = -EPERM;
-	if (!inode_owner_or_capable(inode))
+	if (!inode_owner_or_capable(args->inode))
 		goto out_acl_release;
 
 	posix_acl_release(acl);
@@ -895,20 +894,20 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
 	 * Check if sgid bit needs to be cleared (actual setacl operation will
 	 * be done with mounter's capabilities and so that won't do it for us).
 	 */
-	if (unlikely(inode->i_mode & S_ISGID) &&
+	if (unlikely(args->inode->i_mode & S_ISGID) &&
 	    handler->flags == ACL_TYPE_ACCESS &&
-	    !in_group_p(inode->i_gid) &&
-	    !capable_wrt_inode_uidgid(inode, CAP_FSETID)) {
+	    !in_group_p(args->inode->i_gid) &&
+	    !capable_wrt_inode_uidgid(args->inode, CAP_FSETID)) {
 		struct iattr iattr = { .ia_valid = ATTR_KILL_SGID };
 
-		err = ovl_setattr(dentry, &iattr);
+		err = ovl_setattr(args->dentry, &iattr);
 		if (err)
 			return err;
 	}
 
-	err = ovl_xattr_set(dentry, inode, handler->name, value, size, flags);
+	err = ovl_xattr_set(args);
 	if (!err)
-		ovl_copyattr(ovl_inode_real(inode), inode);
+		ovl_copyattr(ovl_inode_real(args->inode), args->inode);
 
 	return err;
 
@@ -918,33 +917,27 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
 }
 
 static int ovl_own_xattr_get(const struct xattr_handler *handler,
-			     struct dentry *dentry, struct inode *inode,
-			     const char *name, void *buffer, size_t size)
+			     struct xattr_gs_args *args)
 {
 	return -EOPNOTSUPP;
 }
 
 static int ovl_own_xattr_set(const struct xattr_handler *handler,
-			     struct dentry *dentry, struct inode *inode,
-			     const char *name, const void *value,
-			     size_t size, int flags)
+			     struct xattr_gs_args *args)
 {
 	return -EOPNOTSUPP;
 }
 
 static int ovl_other_xattr_get(const struct xattr_handler *handler,
-			       struct dentry *dentry, struct inode *inode,
-			       const char *name, void *buffer, size_t size)
+			       struct xattr_gs_args *args)
 {
-	return ovl_xattr_get(dentry, inode, name, buffer, size);
+	return ovl_xattr_get(args);
 }
 
 static int ovl_other_xattr_set(const struct xattr_handler *handler,
-			       struct dentry *dentry, struct inode *inode,
-			       const char *name, const void *value,
-			       size_t size, int flags)
+			       struct xattr_gs_args *args)
 {
-	return ovl_xattr_set(dentry, inode, name, value, size, flags);
+	return ovl_xattr_set(args);
 }
 
 static const struct xattr_handler __maybe_unused
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 84ad1c90d535..8cc7310386fe 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -831,24 +831,24 @@ EXPORT_SYMBOL (posix_acl_to_xattr);
 
 static int
 posix_acl_xattr_get(const struct xattr_handler *handler,
-		    struct dentry *unused, struct inode *inode,
-		    const char *name, void *value, size_t size)
+		    struct xattr_gs_args *args)
 {
 	struct posix_acl *acl;
 	int error;
 
-	if (!IS_POSIXACL(inode))
+	if (!IS_POSIXACL(args->inode))
 		return -EOPNOTSUPP;
-	if (S_ISLNK(inode->i_mode))
+	if (S_ISLNK(args->inode->i_mode))
 		return -EOPNOTSUPP;
 
-	acl = get_acl(inode, handler->flags);
+	acl = get_acl(args->inode, handler->flags);
 	if (IS_ERR(acl))
 		return PTR_ERR(acl);
 	if (acl == NULL)
 		return -ENODATA;
 
-	error = posix_acl_to_xattr(&init_user_ns, acl, value, size);
+	error = posix_acl_to_xattr(&init_user_ns, acl,
+				   args->buffer, args->size);
 	posix_acl_release(acl);
 
 	return error;
@@ -878,19 +878,18 @@ EXPORT_SYMBOL(set_posix_acl);
 
 static int
 posix_acl_xattr_set(const struct xattr_handler *handler,
-		    struct dentry *unused, struct inode *inode,
-		    const char *name, const void *value,
-		    size_t size, int flags)
+		    struct xattr_gs_args *args)
 {
 	struct posix_acl *acl = NULL;
 	int ret;
 
-	if (value) {
-		acl = posix_acl_from_xattr(&init_user_ns, value, size);
+	if (args->value) {
+		acl = posix_acl_from_xattr(&init_user_ns,
+					   args->value, args->size);
 		if (IS_ERR(acl))
 			return PTR_ERR(acl);
 	}
-	ret = set_posix_acl(inode, handler->flags, acl);
+	ret = set_posix_acl(args->inode, handler->flags, acl);
 	posix_acl_release(acl);
 	return ret;
 }
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index b5b26d8a192c..b949a55b95bd 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -765,7 +765,7 @@ reiserfs_xattr_get(struct inode *inode, const char *name, void *buffer,
 /* This is the implementation for the xattr plugin infrastructure */
 static inline const struct xattr_handler *
 find_xattr_handler_prefix(const struct xattr_handler **handlers,
-			   const char *name)
+			  const char *name)
 {
 	const struct xattr_handler *xah;
 
diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c
index 20be9a0e5870..6d436ef207d1 100644
--- a/fs/reiserfs/xattr_security.c
+++ b/fs/reiserfs/xattr_security.c
@@ -10,27 +10,25 @@
 #include <linux/uaccess.h>
 
 static int
-security_get(const struct xattr_handler *handler, struct dentry *unused,
-	     struct inode *inode, const char *name, void *buffer, size_t size)
+security_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
-	if (IS_PRIVATE(inode))
+	if (IS_PRIVATE(args->inode))
 		return -EPERM;
 
-	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
-				  buffer, size);
+	return reiserfs_xattr_get(args->inode,
+				  xattr_full_name(handler, args->name),
+				  args->buffer, args->size);
 }
 
 static int
-security_set(const struct xattr_handler *handler, struct dentry *unused,
-	     struct inode *inode, const char *name, const void *buffer,
-	     size_t size, int flags)
+security_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
-	if (IS_PRIVATE(inode))
+	if (IS_PRIVATE(args->inode))
 		return -EPERM;
 
-	return reiserfs_xattr_set(inode,
-				  xattr_full_name(handler, name),
-				  buffer, size, flags);
+	return reiserfs_xattr_set(args->inode,
+				  xattr_full_name(handler, args->name),
+				  args->value, args->size, args->flags);
 }
 
 static bool security_list(struct dentry *dentry)
diff --git a/fs/reiserfs/xattr_trusted.c b/fs/reiserfs/xattr_trusted.c
index 5ed48da3d02b..46dfc6e2e150 100644
--- a/fs/reiserfs/xattr_trusted.c
+++ b/fs/reiserfs/xattr_trusted.c
@@ -9,27 +9,25 @@
 #include <linux/uaccess.h>
 
 static int
-trusted_get(const struct xattr_handler *handler, struct dentry *unused,
-	    struct inode *inode, const char *name, void *buffer, size_t size)
+trusted_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
-	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
+	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(args->inode))
 		return -EPERM;
 
-	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
-				  buffer, size);
+	return reiserfs_xattr_get(args->inode,
+				  xattr_full_name(handler, args->name),
+				  args->buffer, args->size);
 }
 
 static int
-trusted_set(const struct xattr_handler *handler, struct dentry *unused,
-	    struct inode *inode, const char *name, const void *buffer,
-	    size_t size, int flags)
+trusted_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
-	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
+	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(args->inode))
 		return -EPERM;
 
-	return reiserfs_xattr_set(inode,
-				  xattr_full_name(handler, name),
-				  buffer, size, flags);
+	return reiserfs_xattr_set(args->inode,
+				  xattr_full_name(handler, args->name),
+				  args->value, args->size, args->flags);
 }
 
 static bool trusted_list(struct dentry *dentry)
diff --git a/fs/reiserfs/xattr_user.c b/fs/reiserfs/xattr_user.c
index a573ca45bacc..4a0bafe62d05 100644
--- a/fs/reiserfs/xattr_user.c
+++ b/fs/reiserfs/xattr_user.c
@@ -8,25 +8,23 @@
 #include <linux/uaccess.h>
 
 static int
-user_get(const struct xattr_handler *handler, struct dentry *unused,
-	 struct inode *inode, const char *name, void *buffer, size_t size)
+user_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
-	if (!reiserfs_xattrs_user(inode->i_sb))
+	if (!reiserfs_xattrs_user(args->inode->i_sb))
 		return -EOPNOTSUPP;
-	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
-				  buffer, size);
+	return reiserfs_xattr_get(args->inode,
+				  xattr_full_name(handler, args->name),
+				  args->buffer, args->size);
 }
 
 static int
-user_set(const struct xattr_handler *handler, struct dentry *unused,
-	 struct inode *inode, const char *name, const void *buffer,
-	 size_t size, int flags)
+user_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
-	if (!reiserfs_xattrs_user(inode->i_sb))
+	if (!reiserfs_xattrs_user(args->inode->i_sb))
 		return -EOPNOTSUPP;
-	return reiserfs_xattr_set(inode,
-				  xattr_full_name(handler, name),
-				  buffer, size, flags);
+	return reiserfs_xattr_set(args->inode,
+				  xattr_full_name(handler, args->name),
+				  args->value, args->size, args->flags);
 }
 
 static bool user_list(struct dentry *dentry)
diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
index e1e3f3dd5a06..c6403f187ced 100644
--- a/fs/squashfs/xattr.c
+++ b/fs/squashfs/xattr.c
@@ -199,15 +199,11 @@ static int squashfs_xattr_get(struct inode *inode, int name_index,
 	return err;
 }
 
-
 static int squashfs_xattr_handler_get(const struct xattr_handler *handler,
-				      struct dentry *unused,
-				      struct inode *inode,
-				      const char *name,
-				      void *buffer, size_t size)
+				      struct xattr_gs_args *args)
 {
-	return squashfs_xattr_get(inode, handler->flags, name,
-		buffer, size);
+	return squashfs_xattr_get(args->inode, handler->flags, args->name,
+				  args->buffer, args->size);
 }
 
 /*
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index 9aefbb60074f..aec02d94f2d6 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -668,30 +668,29 @@ int ubifs_init_security(struct inode *dentry, struct inode *inode,
 #endif
 
 static int xattr_get(const struct xattr_handler *handler,
-			   struct dentry *dentry, struct inode *inode,
-			   const char *name, void *buffer, size_t size)
+		     struct xattr_gs_args *args)
 {
-	dbg_gen("xattr '%s', ino %lu ('%pd'), buf size %zd", name,
-		inode->i_ino, dentry, size);
+	dbg_gen("xattr '%s', ino %lu ('%pd'), buf size %zd", args->name,
+		args->inode->i_ino, args->dentry, args->size);
 
-	name = xattr_full_name(handler, name);
-	return ubifs_xattr_get(inode, name, buffer, size);
+	return ubifs_xattr_get(args->inode,
+			       xattr_full_name(handler, args->name),
+			       args->buffer, args->size);
 }
 
 static int xattr_set(const struct xattr_handler *handler,
-			   struct dentry *dentry, struct inode *inode,
-			   const char *name, const void *value,
-			   size_t size, int flags)
+		     struct xattr_gs_args *args)
 {
 	dbg_gen("xattr '%s', host ino %lu ('%pd'), size %zd",
-		name, inode->i_ino, dentry, size);
-
-	name = xattr_full_name(handler, name);
-
-	if (value)
-		return ubifs_xattr_set(inode, name, value, size, flags, true);
-	else
-		return ubifs_xattr_remove(inode, name);
+		args->name, args->inode->i_ino, args->dentry, args->size);
+
+	if (args->value)
+		return ubifs_xattr_set(args->inode,
+				       xattr_full_name(handler, args->name),
+				       args->value, args->size,
+				       args->flags, true);
+	return ubifs_xattr_remove(args->inode,
+				  xattr_full_name(handler, args->name));
 }
 
 static const struct xattr_handler ubifs_user_xattr_handler = {
diff --git a/fs/xattr.c b/fs/xattr.c
index 90dd78f0eb27..dceb5afe79be 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -135,19 +135,18 @@ xattr_permission(struct inode *inode, const char *name, int mask)
 }
 
 int
-__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
-	       const void *value, size_t size, int flags)
+__vfs_setxattr(struct xattr_gs_args *args)
 {
 	const struct xattr_handler *handler;
 
-	handler = xattr_resolve_name(inode, &name);
+	handler = xattr_resolve_name(args->inode, &args->name);
 	if (IS_ERR(handler))
 		return PTR_ERR(handler);
 	if (!handler->set)
 		return -EOPNOTSUPP;
-	if (size == 0)
-		value = "";  /* empty EA, do not remove */
-	return handler->set(handler, dentry, inode, name, value, size, flags);
+	if (args->size == 0)
+		args->value = "";  /* empty EA, do not remove */
+	return handler->set(handler, args);
 }
 EXPORT_SYMBOL(__vfs_setxattr);
 
@@ -178,7 +177,16 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
 	if (issec)
 		inode->i_flags &= ~S_NOSEC;
 	if (inode->i_opflags & IOP_XATTR) {
-		error = __vfs_setxattr(dentry, inode, name, value, size, flags);
+		struct xattr_gs_args args = {
+			.dentry = dentry,
+			.inode = inode,
+			.name = name,
+			.value = value,
+			.size = size,
+			.flags = flags,
+		};
+
+		error = __vfs_setxattr(&args);
 		if (!error) {
 			fsnotify_xattr(dentry);
 			security_inode_post_setxattr(dentry, name, value,
@@ -268,68 +276,61 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
 		   size_t xattr_size, gfp_t flags)
 {
 	const struct xattr_handler *handler;
-	struct inode *inode = dentry->d_inode;
-	char *value = *xattr_value;
+	struct xattr_gs_args args;
 	int error;
 
-	error = xattr_permission(inode, name, MAY_READ);
+	error = xattr_permission(dentry->d_inode, name, MAY_READ);
 	if (error)
 		return error;
 
-	handler = xattr_resolve_name(inode, &name);
+	handler = xattr_resolve_name(dentry->d_inode, &name);
 	if (IS_ERR(handler))
 		return PTR_ERR(handler);
 	if (!handler->get)
 		return -EOPNOTSUPP;
-	error = handler->get(handler, dentry, inode, name, NULL, 0);
+	memset(&args, 0, sizeof(args));
+	args.inode = dentry->d_inode;
+	args.dentry = dentry;
+	args.name = name;
+	error = handler->get(handler, &args);
 	if (error < 0)
 		return error;
 
-	if (!value || (error > xattr_size)) {
-		value = krealloc(*xattr_value, error + 1, flags);
-		if (!value)
+	args.buffer = *xattr_value;
+	if (!*xattr_value || (error > xattr_size)) {
+		args.buffer = krealloc(*xattr_value, error + 1, flags);
+		if (!args.buffer)
 			return -ENOMEM;
-		memset(value, 0, error + 1);
+		memset(args.buffer, 0, error + 1);
 	}
 
-	error = handler->get(handler, dentry, inode, name, value, error);
-	*xattr_value = value;
+	args.size = error;
+	error = handler->get(handler, &args);
+	*xattr_value = args.buffer;
 	return error;
 }
 
 ssize_t
-__vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
-	       void *value, size_t size)
+__vfs_getxattr(struct xattr_gs_args *args)
 {
 	const struct xattr_handler *handler;
-
-	handler = xattr_resolve_name(inode, &name);
-	if (IS_ERR(handler))
-		return PTR_ERR(handler);
-	if (!handler->get)
-		return -EOPNOTSUPP;
-	return handler->get(handler, dentry, inode, name, value, size);
-}
-EXPORT_SYMBOL(__vfs_getxattr);
-
-ssize_t
-vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
-{
-	struct inode *inode = dentry->d_inode;
 	int error;
 
-	error = xattr_permission(inode, name, MAY_READ);
+	if (args->flags & XATTR_NOSECURITY)
+		goto nolsm;
+	error = xattr_permission(args->inode, args->name, MAY_READ);
 	if (error)
 		return error;
 
-	error = security_inode_getxattr(dentry, name);
+	error = security_inode_getxattr(args->dentry, args->name);
 	if (error)
 		return error;
 
-	if (!strncmp(name, XATTR_SECURITY_PREFIX,
+	if (!strncmp(args->name, XATTR_SECURITY_PREFIX,
 				XATTR_SECURITY_PREFIX_LEN)) {
-		const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
-		int ret = xattr_getsecurity(inode, suffix, value, size);
+		const char *suffix = args->name + XATTR_SECURITY_PREFIX_LEN;
+		int ret = xattr_getsecurity(args->inode, suffix,
+					    args->buffer, args->size);
 		/*
 		 * Only overwrite the return value if a security module
 		 * is actually active.
@@ -339,7 +340,27 @@ vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
 		return ret;
 	}
 nolsm:
-	return __vfs_getxattr(dentry, inode, name, value, size);
+	handler = xattr_resolve_name(args->inode, &args->name);
+	if (IS_ERR(handler))
+		return PTR_ERR(handler);
+	if (!handler->get)
+		return -EOPNOTSUPP;
+	return handler->get(handler, args);
+}
+EXPORT_SYMBOL(__vfs_getxattr);
+
+ssize_t
+vfs_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size)
+{
+	struct xattr_gs_args args = {
+		.dentry = dentry,
+		.inode = dentry->d_inode,
+		.name = name,
+		.buffer = buffer,
+		.size = size,
+	};
+
+	return __vfs_getxattr(&args);
 }
 EXPORT_SYMBOL_GPL(vfs_getxattr);
 
@@ -366,15 +387,20 @@ EXPORT_SYMBOL_GPL(vfs_listxattr);
 int
 __vfs_removexattr(struct dentry *dentry, const char *name)
 {
-	struct inode *inode = d_inode(dentry);
 	const struct xattr_handler *handler;
+	struct xattr_gs_args args;
 
-	handler = xattr_resolve_name(inode, &name);
+	handler = xattr_resolve_name(d_inode(dentry), &name);
 	if (IS_ERR(handler))
 		return PTR_ERR(handler);
 	if (!handler->set)
 		return -EOPNOTSUPP;
-	return handler->set(handler, dentry, inode, name, NULL, 0, XATTR_REPLACE);
+	memset(&args, 0, sizeof(args));
+	args.dentry = dentry;
+	args.inode = d_inode(dentry);
+	args.name = name;
+	args.flags = XATTR_REPLACE;
+	return handler->set(handler, &args);
 }
 EXPORT_SYMBOL(__vfs_removexattr);
 
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index d48fcf11cc35..60fec712f60b 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -305,7 +305,7 @@ int
 xfs_attr_set(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
-	unsigned char		*value,
+	const unsigned char	*value,
 	int			valuelen,
 	int			flags)
 {
@@ -324,7 +324,7 @@ xfs_attr_set(
 	if (error)
 		return error;
 
-	args.value = value;
+	args.value = (unsigned char *)value;
 	args.valuelen = valuelen;
 	args.op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
 	args.total = xfs_attr_calc_size(&args, &local);
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
index ff28ebf3b635..afe184e5fb01 100644
--- a/fs/xfs/libxfs/xfs_attr.h
+++ b/fs/xfs/libxfs/xfs_attr.h
@@ -145,7 +145,7 @@ int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
 		 unsigned char *value, int *valuelenp, int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-		 unsigned char *value, int valuelen, int flags);
+		 const unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args);
 int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
 int xfs_attr_remove_args(struct xfs_da_args *args);
diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
index 3123b5aaad2a..313a828a3d1f 100644
--- a/fs/xfs/xfs_xattr.c
+++ b/fs/xfs/xfs_xattr.c
@@ -17,20 +17,20 @@
 
 
 static int
-xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
-		struct inode *inode, const char *name, void *value, size_t size)
+xfs_xattr_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
 	int xflags = handler->flags;
-	struct xfs_inode *ip = XFS_I(inode);
-	int error, asize = size;
+	struct xfs_inode *ip = XFS_I(args->inode);
+	int error, asize = args->size;
 
 	/* Convert Linux syscall to XFS internal ATTR flags */
-	if (!size) {
+	if (!args->size) {
 		xflags |= ATTR_KERNOVAL;
-		value = NULL;
+		args->buffer = NULL;
 	}
 
-	error = xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags);
+	error = xfs_attr_get(ip, (const unsigned char *)args->name,
+			     args->buffer, &asize, xflags);
 	if (error)
 		return error;
 	return asize;
@@ -59,26 +59,25 @@ xfs_forget_acl(
 }
 
 static int
-xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
-		struct inode *inode, const char *name, const void *value,
-		size_t size, int flags)
+xfs_xattr_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
 {
 	int			xflags = handler->flags;
-	struct xfs_inode	*ip = XFS_I(inode);
+	struct xfs_inode	*ip = XFS_I(args->inode);
 	int			error;
 
 	/* Convert Linux syscall to XFS internal ATTR flags */
-	if (flags & XATTR_CREATE)
+	if (args->flags & XATTR_CREATE)
 		xflags |= ATTR_CREATE;
-	if (flags & XATTR_REPLACE)
+	if (args->flags & XATTR_REPLACE)
 		xflags |= ATTR_REPLACE;
 
-	if (!value)
-		return xfs_attr_remove(ip, (unsigned char *)name, xflags);
-	error = xfs_attr_set(ip, (unsigned char *)name,
-				(void *)value, size, xflags);
+	if (!args->value)
+		return xfs_attr_remove(ip, (const unsigned char *)args->name,
+				       xflags);
+	error = xfs_attr_set(ip, (const unsigned char *)args->name,
+			     args->value, args->size, xflags);
 	if (!error)
-		xfs_forget_acl(inode, name, xflags);
+		xfs_forget_acl(args->inode, args->name, xflags);
 
 	return error;
 }
diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index 6dad031be3c2..b2afbdcf000f 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -25,17 +25,27 @@ struct dentry;
  * name.  When @prefix is set instead, match attributes with that prefix and
  * with a non-empty suffix.
  */
+struct xattr_gs_args {
+	struct dentry *dentry;
+	struct inode *inode;
+	const char *name;
+	union {
+		void *buffer;
+		const void *value;
+	};
+	size_t size;
+	int flags;
+};
+
 struct xattr_handler {
 	const char *name;
 	const char *prefix;
 	int flags;      /* fs private flags */
 	bool (*list)(struct dentry *dentry);
-	int (*get)(const struct xattr_handler *, struct dentry *dentry,
-		   struct inode *inode, const char *name, void *buffer,
-		   size_t size);
-	int (*set)(const struct xattr_handler *, struct dentry *dentry,
-		   struct inode *inode, const char *name, const void *buffer,
-		   size_t size, int flags);
+	int (*get)(const struct xattr_handler *handler,
+		   struct xattr_gs_args *args);
+	int (*set)(const struct xattr_handler *handler,
+		   struct xattr_gs_args *args);
 };
 
 const char *xattr_full_name(const struct xattr_handler *, const char *);
@@ -46,10 +56,10 @@ struct xattr {
 	size_t value_len;
 };
 
-ssize_t __vfs_getxattr(struct dentry *, struct inode *, const char *, void *, size_t);
+ssize_t __vfs_getxattr(struct xattr_gs_args *args);
 ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
 ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
-int __vfs_setxattr(struct dentry *, struct inode *, const char *, const void *, size_t, int);
+int __vfs_setxattr(struct xattr_gs_args *args);
 int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
 int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
 int __vfs_removexattr(struct dentry *, const char *);
diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h
index c1395b5bd432..1eba02616274 100644
--- a/include/uapi/linux/xattr.h
+++ b/include/uapi/linux/xattr.h
@@ -17,8 +17,11 @@
 #if __UAPI_DEF_XATTR
 #define __USE_KERNEL_XATTR_DEFS
 
-#define XATTR_CREATE	0x1	/* set value, fail if attr already exists */
-#define XATTR_REPLACE	0x2	/* set value, fail if attr does not exist */
+#define XATTR_CREATE	 0x1	/* set value, fail if attr already exists */
+#define XATTR_REPLACE	 0x2	/* set value, fail if attr does not exist */
+#ifdef __KERNEL__ /* following is kernel internal, colocated for maintenance */
+#define XATTR_NOSECURITY 0x4	/* get value, do not involve security check */
+#endif
 #endif
 
 /* Namespaces */
diff --git a/mm/shmem.c b/mm/shmem.c
index 2bed4761f279..c84687f57e43 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3205,24 +3205,23 @@ static int shmem_initxattrs(struct inode *inode,
 }
 
 static int shmem_xattr_handler_get(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, void *buffer, size_t size)
+				   struct xattr_gs_args *args)
 {
-	struct shmem_inode_info *info = SHMEM_I(inode);
+	struct shmem_inode_info *info = SHMEM_I(args->inode);
 
-	name = xattr_full_name(handler, name);
-	return simple_xattr_get(&info->xattrs, name, buffer, size);
+	return simple_xattr_get(&info->xattrs,
+				xattr_full_name(handler, args->name),
+				args->buffer, args->size);
 }
 
 static int shmem_xattr_handler_set(const struct xattr_handler *handler,
-				   struct dentry *unused, struct inode *inode,
-				   const char *name, const void *value,
-				   size_t size, int flags)
+				   struct xattr_gs_args *args)
 {
-	struct shmem_inode_info *info = SHMEM_I(inode);
+	struct shmem_inode_info *info = SHMEM_I(args->inode);
 
-	name = xattr_full_name(handler, name);
-	return simple_xattr_set(&info->xattrs, name, value, size, flags);
+	return simple_xattr_set(&info->xattrs,
+				xattr_full_name(handler, args->name),
+				args->value, args->size, args->flags);
 }
 
 static const struct xattr_handler shmem_security_xattr_handler = {
diff --git a/net/socket.c b/net/socket.c
index 6a9ab7a8b1d2..7920caece7cc 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -299,15 +299,15 @@ static const struct dentry_operations sockfs_dentry_operations = {
 };
 
 static int sockfs_xattr_get(const struct xattr_handler *handler,
-			    struct dentry *dentry, struct inode *inode,
-			    const char *suffix, void *value, size_t size)
+			    struct xattr_gs_args *args)
 {
-	if (value) {
-		if (dentry->d_name.len + 1 > size)
+	if (args->buffer) {
+		if (args->dentry->d_name.len + 1 > args->size)
 			return -ERANGE;
-		memcpy(value, dentry->d_name.name, dentry->d_name.len + 1);
+		memcpy(args->buffer, args->dentry->d_name.name,
+		       args->dentry->d_name.len + 1);
 	}
-	return dentry->d_name.len + 1;
+	return args->dentry->d_name.len + 1;
 }
 
 #define XATTR_SOCKPROTONAME_SUFFIX "sockprotoname"
@@ -320,9 +320,7 @@ static const struct xattr_handler sockfs_xattr_handler = {
 };
 
 static int sockfs_security_xattr_set(const struct xattr_handler *handler,
-				     struct dentry *dentry, struct inode *inode,
-				     const char *suffix, const void *value,
-				     size_t size, int flags)
+				     struct xattr_gs_args *args)
 {
 	/* Handled by LSM. */
 	return -EAGAIN;
diff --git a/security/commoncap.c b/security/commoncap.c
index f4ee0ae106b2..c58b684d5d9a 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -294,11 +294,15 @@ int cap_capset(struct cred *new,
  */
 int cap_inode_need_killpriv(struct dentry *dentry)
 {
-	struct inode *inode = d_backing_inode(dentry);
-	int error;
+	struct xattr_gs_args args;
+
+	memset(&args, 0, sizeof(args));
+	args.dentry = dentry;
+	args.inode = d_backing_inode(dentry);
+	args.name = XATTR_NAME_CAPS;
+	args.flags = XATTR_NOSECURITY;
 
-	error = __vfs_getxattr(dentry, inode, XATTR_NAME_CAPS, NULL, 0);
-	return error > 0;
+	return __vfs_getxattr(&args) > 0;
 }
 
 /**
@@ -570,7 +574,7 @@ static inline int bprm_caps_from_vfs_caps(struct cpu_vfs_cap_data *caps,
  */
 int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps)
 {
-	struct inode *inode = d_backing_inode(dentry);
+	struct xattr_gs_args args;
 	__u32 magic_etc;
 	unsigned tocopy, i;
 	int size;
@@ -580,13 +584,20 @@ int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data
 	struct user_namespace *fs_ns;
 
 	memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
+	memset(&args, 0, sizeof(args));
 
-	if (!inode)
+	args.dentry = (struct dentry *)dentry;
+	args.inode = d_backing_inode(args.dentry);
+	if (!args.inode)
 		return -ENODATA;
 
-	fs_ns = inode->i_sb->s_user_ns;
-	size = __vfs_getxattr((struct dentry *)dentry, inode,
-			      XATTR_NAME_CAPS, &data, XATTR_CAPS_SZ);
+	fs_ns = args.inode->i_sb->s_user_ns;
+
+	args.name = XATTR_NAME_CAPS;
+	args.buffer = &data;
+	args.size = XATTR_CAPS_SZ;
+	args.flags = XATTR_NOSECURITY;
+	size = __vfs_getxattr(&args);
 	if (size == -ENODATA || size == -EOPNOTSUPP)
 		/* no data, that's ok */
 		return -ENODATA;
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index f9a81b187fae..a53ef9281186 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -91,16 +91,23 @@ static bool evm_key_loaded(void)
 
 static int evm_find_protected_xattrs(struct dentry *dentry)
 {
-	struct inode *inode = d_backing_inode(dentry);
+	struct xattr_gs_args args;
 	struct xattr_list *xattr;
 	int error;
 	int count = 0;
 
-	if (!(inode->i_opflags & IOP_XATTR))
+	memset(&args, 0, sizeof(args));
+	args.dentry = dentry;
+	args.inode = d_backing_inode(dentry);
+
+	if (!(args.inode->i_opflags & IOP_XATTR))
 		return -EOPNOTSUPP;
 
+	args.flags = XATTR_NOSECURITY;
+
 	list_for_each_entry_rcu(xattr, &evm_config_xattrnames, list) {
-		error = __vfs_getxattr(dentry, inode, xattr->name, NULL, 0);
+		args.name = xattr->name;
+		error = __vfs_getxattr(&args);
 		if (error < 0) {
 			if (error == -ENODATA)
 				continue;
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 74dd46de01b6..23c3a2c468f7 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -540,6 +540,8 @@ static int sb_finish_set_opts(struct super_block *sb)
 	int rc = 0;
 
 	if (sbsec->behavior == SECURITY_FS_USE_XATTR) {
+		struct xattr_gs_args args;
+
 		/* Make sure that the xattr handler exists and that no
 		   error other than -ENODATA is returned by getxattr on
 		   the root directory.  -ENODATA is ok, as this may be
@@ -552,7 +554,12 @@ static int sb_finish_set_opts(struct super_block *sb)
 			goto out;
 		}
 
-		rc = __vfs_getxattr(root, root_inode, XATTR_NAME_SELINUX, NULL, 0);
+		memset(&args, 0, sizeof(args));
+		args.dentry = root;
+		args.inode = root_inode;
+		args.name = XATTR_NAME_SELINUX;
+		args.flags = XATTR_NOSECURITY;
+		rc = __vfs_getxattr(&args);
 		if (rc < 0 && rc != -ENODATA) {
 			if (rc == -EOPNOTSUPP)
 				pr_warn("SELinux: (dev %s, type "
@@ -1371,6 +1378,7 @@ static int inode_doinit_use_xattr(struct inode *inode, struct dentry *dentry,
 	char *context;
 	unsigned int len;
 	int rc;
+	struct xattr_gs_args args;
 
 	len = INITCONTEXTLEN;
 	context = kmalloc(len + 1, GFP_NOFS);
@@ -1378,12 +1386,21 @@ static int inode_doinit_use_xattr(struct inode *inode, struct dentry *dentry,
 		return -ENOMEM;
 
 	context[len] = '\0';
-	rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, context, len);
+	memset(&args, 0, sizeof(args));
+	args.dentry = dentry;
+	args.inode = inode;
+	args.name = XATTR_NAME_SELINUX;
+	args.buffer = context;
+	args.size = len;
+	args.flags = XATTR_NOSECURITY;
+	rc = __vfs_getxattr(&args);
 	if (rc == -ERANGE) {
 		kfree(context);
 
 		/* Need a larger buffer.  Query for the right size. */
-		rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, NULL, 0);
+		args.buffer = NULL;
+		args.size = 0;
+		rc = __vfs_getxattr(&args);
 		if (rc < 0)
 			return rc;
 
@@ -1393,8 +1410,9 @@ static int inode_doinit_use_xattr(struct inode *inode, struct dentry *dentry,
 			return -ENOMEM;
 
 		context[len] = '\0';
-		rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX,
-				    context, len);
+		args.buffer = context;
+		args.size = len;
+		rc = __vfs_getxattr(&args);
 	}
 	if (rc < 0) {
 		kfree(context);
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 4c5e5a438f8b..91e585bd1823 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -282,25 +282,32 @@ static struct smack_known *smk_fetch(const char *name, struct inode *ip,
 					struct dentry *dp)
 {
 	int rc;
-	char *buffer;
 	struct smack_known *skp = NULL;
+	struct xattr_gs_args args;
 
 	if (!(ip->i_opflags & IOP_XATTR))
 		return ERR_PTR(-EOPNOTSUPP);
 
-	buffer = kzalloc(SMK_LONGLABEL, GFP_KERNEL);
-	if (buffer == NULL)
+	memset(&args, 0, sizeof(args));
+	args.dentry = dp;
+	args.inode = ip;
+	args.name = name;
+	args.buffer = kzalloc(SMK_LONGLABEL, GFP_KERNEL);
+	args.size = SMK_LONGLABEL;
+	args.flags = XATTR_NOSECURITY;
+
+	if (args.buffer == NULL)
 		return ERR_PTR(-ENOMEM);
 
-	rc = __vfs_getxattr(dp, ip, name, buffer, SMK_LONGLABEL);
+	rc = __vfs_getxattr(&args);
 	if (rc < 0)
 		skp = ERR_PTR(rc);
 	else if (rc == 0)
 		skp = NULL;
 	else
-		skp = smk_import_entry(buffer, rc);
+		skp = smk_import_entry(args.buffer, rc);
 
-	kfree(buffer);
+	kfree(args.buffer);
 
 	return skp;
 }
@@ -3424,6 +3431,8 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
 		 * Transmuting directory
 		 */
 		if (S_ISDIR(inode->i_mode)) {
+			struct xattr_gs_args args;
+
 			/*
 			 * If this is a new directory and the label was
 			 * transmuted when the inode was initialized
@@ -3433,16 +3442,19 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
 			 * If there is a transmute attribute on the
 			 * directory mark the inode.
 			 */
+			memset(&args, 0, sizeof(args));
+			args.dentry = dp;
+			args.inode = inode;
+			args.name = XATTR_NAME_SMACKTRANSMUTE;
+			args.size = TRANS_TRUE_SIZE;
 			if (isp->smk_flags & SMK_INODE_CHANGED) {
 				isp->smk_flags &= ~SMK_INODE_CHANGED;
-				rc = __vfs_setxattr(dp, inode,
-					XATTR_NAME_SMACKTRANSMUTE,
-					TRANS_TRUE, TRANS_TRUE_SIZE,
-					0);
+				args.value = TRANS_TRUE;
+				rc = __vfs_setxattr(&args);
 			} else {
-				rc = __vfs_getxattr(dp, inode,
-					XATTR_NAME_SMACKTRANSMUTE, trattr,
-					TRANS_TRUE_SIZE);
+				args.buffer = trattr;
+				args.flags = XATTR_NOSECURITY;
+				rc = __vfs_getxattr(&args);
 				if (rc >= 0 && strncmp(trattr, TRANS_TRUE,
 						       TRANS_TRUE_SIZE) != 0)
 					rc = -EINVAL;
-- 
2.23.0.187.g17f5b7556c-goog



_______________________________________________
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^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
  2019-08-27 15:05 [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr Mark Salyzyn via Linux-f2fs-devel
@ 2019-08-27 15:49 ` Jeff Layton
  2019-08-27 17:07 ` David Sterba
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 7+ messages in thread
From: Jeff Layton @ 2019-08-27 15:49 UTC (permalink / raw)
  To: Mark Salyzyn, linux-kernel
  Cc: Latchesar Ionkov, Hugh Dickins, Mike Marshall, James Morris,
	devel, Eric Van Hensbergen, Joel Becker, Anna Schumaker,
	Trond Myklebust, Mathieu Malaterre, Greg Kroah-Hartman, Jan Kara,
	Casey Schaufler, Andrew Morton, Dave Kleikamp, linux-doc,
	Mimi Zohar, linux-cifs, Paul Moore, Darrick J. Wong,
	Eric Sandeen, kernel-team, selinux, Brian Foster, reiserfs-devel,
	Tejun Heo, Jaegeuk Kim, Theodore Ts'o, Miklos Szeredi,
	linux-f2fs-devel, Benjamin Coddington, linux-integrity,
	Martin Brandenburg, Chris Mason, linux-mtd, linux-afs,
	Jonathan Corbet, Vyacheslav Dubeyko, Allison Henderson,
	Ilya Dryomov, linux-ext4, Stephen Smalley, Serge Hallyn,
	Eric Paris, ceph-devel, linux-nfs, Joseph Qi, samba-technical,
	linux-xfs, Bob Peterson, linux-fsdevel, linux-erofs,
	David S. Miller, ocfs2-devel, jfs-discussion, Jan Kara,
	Eric Biggers, Dominique Martinet, Adrian Hunter, David Howells,
	linux-mm, Andreas Dilger, devel, J. Bruce Fields,
	Andreas Gruenbacher, Sage Weil, Richard Weinberger, Mark Fasheh,
	cluster-devel, Steve French, v9fs-developer, Bharath Vedartham,
	Jann Horn, ecryptfs, Josef Bacik, Dave Chinner, David Sterba,
	Artem Bityutskiy, netdev, linux-unionfs, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

On Tue, 2019-08-27 at 08:05 -0700, Mark Salyzyn wrote:
> Replace arguments for get and set xattr methods, and __vfs_getxattr
> and __vfs_setaxtr functions with a reference to the following now
> common argument structure:
> 
> struct xattr_gs_args {
> 	struct dentry *dentry;
> 	struct inode *inode;
> 	const char *name;
> 	union {
> 		void *buffer;
> 		const void *value;
> 	};
> 	size_t size;
> 	int flags;
> };
> 
> Which in effect adds a flags option to the get method and
> __vfs_getxattr function.
> 
> Add a flag option to get xattr method that has bit flag of
> XATTR_NOSECURITY passed to it.  XATTR_NOSECURITY is generally then
> set in the __vfs_getxattr path when called by security
> infrastructure.
> 
> This handles the case of a union filesystem driver that is being
> requested by the security layer to report back the xattr data.
> 
> For the use case where access is to be blocked by the security layer.
> 
> The path then could be security(dentry) ->
> __vfs_getxattr({dentry...XATTR_NOSECURITY}) ->
> handler->get({dentry...XATTR_NOSECURITY}) ->
> __vfs_getxattr({lower_dentry...XATTR_NOSECURITY}) ->
> lower_handler->get({lower_dentry...XATTR_NOSECURITY})
> which would report back through the chain data and success as
> expected, the logging security layer at the top would have the
> data to determine the access permissions and report back the target
> context that was blocked.
> 
> Without the get handler flag, the path on a union filesystem would be
> the errant security(dentry) -> __vfs_getxattr(dentry) ->
> handler->get(dentry) -> vfs_getxattr(lower_dentry) -> nested ->
> security(lower_dentry, log off) -> lower_handler->get(lower_dentry)
> which would report back through the chain no data, and -EACCES.
> 
> For selinux for both cases, this would translate to a correctly
> determined blocked access. In the first case with this change a correct avc
> log would be reported, in the second legacy case an incorrect avc log
> would be reported against an uninitialized u:object_r:unlabeled:s0
> context making the logs cosmetically useless for audit2allow.
> 
> This patch series is inert and is the wide-spread addition of the
> flags option for xattr functions, and a replacement of __vfs_getxattr
> with __vfs_getxattr({...XATTR_NOSECURITY}).
> 
> Signed-off-by: Mark Salyzyn <salyzyn@android.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Cc: Stephen Smalley <sds@tycho.nsa.gov>
> Cc: linux-kernel@vger.kernel.org
> Cc: kernel-team@android.com
> Cc: linux-security-module@vger.kernel.org
> Cc: stable@vger.kernel.org # 4.4, 4.9, 4.14 & 4.19
> ---
> v8:
> - Documentation reported 'struct xattr_gs_flags' rather than
>   'struct xattr_gs_flags *args' as argument to get and set methods.
> 
> v7:
> - missed spots in fs/9p/acl.c, fs/afs/xattr.c, fs/ecryptfs/crypto.c,
>   fs/ubifs/xattr.c, fs/xfs/libxfs/xfs_attr.c,
>   security/integrity/evm/evm_main.c and security/smack/smack_lsm.c.
> 
> v6:
> - kernfs missed a spot
> 
> v5:
> - introduce struct xattr_gs_args for get and set methods,
>   __vfs_getxattr and __vfs_setxattr functions.
> - cover a missing spot in ext2.
> - switch from snprintf to scnprintf for correctness.
> 
> v4:
> - ifdef __KERNEL__ around XATTR_NOSECURITY to
>   keep it colocated in uapi headers.
> 
> v3:
> - poor aim on ubifs not ubifs_xattr_get, but static xattr_get
> 
> v2:
> - Missed a spot: ubifs, erofs and afs.
> 
> v1:
> - Removed from an overlayfs patch set, and made independent.
>   Expect this to be the basis of some security improvements.
> ---
>  Documentation/filesystems/Locking |  10 ++-
>  drivers/staging/erofs/xattr.c     |   8 +--
>  fs/9p/acl.c                       |  51 +++++++-------
>  fs/9p/xattr.c                     |  19 +++--
>  fs/afs/xattr.c                    | 112 +++++++++++++-----------------
>  fs/btrfs/xattr.c                  |  36 +++++-----
>  fs/ceph/xattr.c                   |  40 +++++------
>  fs/cifs/xattr.c                   |  72 +++++++++----------
>  fs/ecryptfs/crypto.c              |  20 +++---
>  fs/ecryptfs/inode.c               |  36 ++++++----
>  fs/ecryptfs/mmap.c                |  39 ++++++-----
>  fs/ext2/xattr_security.c          |  16 ++---
>  fs/ext2/xattr_trusted.c           |  15 ++--
>  fs/ext2/xattr_user.c              |  19 +++--
>  fs/ext4/xattr_security.c          |  15 ++--
>  fs/ext4/xattr_trusted.c           |  15 ++--
>  fs/ext4/xattr_user.c              |  19 +++--
>  fs/f2fs/xattr.c                   |  42 +++++------
>  fs/fuse/xattr.c                   |  23 +++---
>  fs/gfs2/xattr.c                   |  18 ++---
>  fs/hfs/attr.c                     |  15 ++--
>  fs/hfsplus/xattr.c                |  17 +++--
>  fs/hfsplus/xattr_security.c       |  13 ++--
>  fs/hfsplus/xattr_trusted.c        |  13 ++--
>  fs/hfsplus/xattr_user.c           |  13 ++--
>  fs/jffs2/security.c               |  16 ++---
>  fs/jffs2/xattr_trusted.c          |  16 ++---
>  fs/jffs2/xattr_user.c             |  16 ++---
>  fs/jfs/xattr.c                    |  33 ++++-----
>  fs/kernfs/inode.c                 |  23 +++---
>  fs/nfs/nfs4proc.c                 |  28 ++++----
>  fs/ocfs2/xattr.c                  |  52 ++++++--------
>  fs/orangefs/xattr.c               |  19 ++---
>  fs/overlayfs/inode.c              |  43 ++++++------
>  fs/overlayfs/overlayfs.h          |   6 +-
>  fs/overlayfs/super.c              |  53 ++++++--------
>  fs/posix_acl.c                    |  23 +++---
>  fs/reiserfs/xattr.c               |   2 +-
>  fs/reiserfs/xattr_security.c      |  22 +++---
>  fs/reiserfs/xattr_trusted.c       |  22 +++---
>  fs/reiserfs/xattr_user.c          |  22 +++---
>  fs/squashfs/xattr.c               |  10 +--
>  fs/ubifs/xattr.c                  |  33 +++++----
>  fs/xattr.c                        | 112 ++++++++++++++++++------------
>  fs/xfs/libxfs/xfs_attr.c          |   4 +-
>  fs/xfs/libxfs/xfs_attr.h          |   2 +-
>  fs/xfs/xfs_xattr.c                |  35 +++++-----
>  include/linux/xattr.h             |  26 ++++---
>  include/uapi/linux/xattr.h        |   7 +-
>  mm/shmem.c                        |  21 +++---
>  net/socket.c                      |  16 ++---
>  security/commoncap.c              |  29 +++++---
>  security/integrity/evm/evm_main.c |  13 +++-
>  security/selinux/hooks.c          |  28 ++++++--
>  security/smack/smack_lsm.c        |  38 ++++++----
>  55 files changed, 732 insertions(+), 734 deletions(-)
> 
> 

[...]

>  
> diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
> index 939eab7aa219..c4fee624291b 100644
> --- a/fs/ceph/xattr.c
> +++ b/fs/ceph/xattr.c
> @@ -1179,22 +1179,21 @@ int __ceph_setxattr(struct inode *inode, const char *name,
>  }
>  
>  static int ceph_get_xattr_handler(const struct xattr_handler *handler,
> -				  struct dentry *dentry, struct inode *inode,
> -				  const char *name, void *value, size_t size)
> +				  struct xattr_gs_args *args)
>  {
> -	if (!ceph_is_valid_xattr(name))
> +	if (!ceph_is_valid_xattr(args->name))
>  		return -EOPNOTSUPP;
> -	return __ceph_getxattr(inode, name, value, size);
> +	return __ceph_getxattr(args->inode, args->name,
> +			       args->buffer, args->size);
>  }
>  
>  static int ceph_set_xattr_handler(const struct xattr_handler *handler,
> -				  struct dentry *unused, struct inode *inode,
> -				  const char *name, const void *value,
> -				  size_t size, int flags)
> +				  struct xattr_gs_args *args)
>  {
> -	if (!ceph_is_valid_xattr(name))
> +	if (!ceph_is_valid_xattr(args->name))
>  		return -EOPNOTSUPP;
> -	return __ceph_setxattr(inode, name, value, size, flags);
> +	return __ceph_setxattr(args->inode, args->name,
> +			       args->value, args->size, args->flags);
>  }
>  
>  static const struct xattr_handler ceph_other_xattr_handler = {
> @@ -1300,25 +1299,22 @@ void ceph_security_invalidate_secctx(struct inode *inode)
>  }
>  
>  static int ceph_xattr_set_security_label(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *key, const void *buf,
> -				    size_t buflen, int flags)
> +					 struct xattr_gs_args *args)
>  {
> -	if (security_ismaclabel(key)) {
> -		const char *name = xattr_full_name(handler, key);
> -		return __ceph_setxattr(inode, name, buf, buflen, flags);
> -	}
> +	if (security_ismaclabel(args->name))
> +		return __ceph_setxattr(args->inode,
> +				       xattr_full_name(handler, args->name),
> +				       args->value, args->size, args->flags);
>  	return  -EOPNOTSUPP;
>  }
>  
>  static int ceph_xattr_get_security_label(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *key, void *buf, size_t buflen)
> +					 struct xattr_gs_args *args)
>  {
> -	if (security_ismaclabel(key)) {
> -		const char *name = xattr_full_name(handler, key);
> -		return __ceph_getxattr(inode, name, buf, buflen);
> -	}
> +	if (security_ismaclabel(args->name))
> +		return __ceph_getxattr(args->inode,
> +				       xattr_full_name(handler, args->name),
> +				       args->buffer, args->size);
>  	return  -EOPNOTSUPP;
>  }
>  

The ceph bits look fine to me. Note that we do have some patches queued
up for v5.4 that might have some merge conflicts here. Shouldn't be too
hard to fix it up though.

Acked-by: Jeff Layton <jlayton@kernel.org>




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

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
  2019-08-27 15:05 [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr Mark Salyzyn via Linux-f2fs-devel
  2019-08-27 15:49 ` Jeff Layton
@ 2019-08-27 17:07 ` David Sterba
  2019-08-27 21:35 ` Darrick J. Wong
  2019-08-28 14:24 ` Christoph Hellwig
  3 siblings, 0 replies; 7+ messages in thread
From: David Sterba @ 2019-08-27 17:07 UTC (permalink / raw)
  To: Mark Salyzyn
  Cc: Latchesar Ionkov, Eric Sandeen, Mike Marshall, James Morris,
	devel, Eric Van Hensbergen, Joel Becker, Trond Myklebust,
	Mathieu Malaterre, Greg Kroah-Hartman, linux-kernel, Jan Kara,
	Casey Schaufler, Andrew Morton, Dave Kleikamp, linux-doc,
	Jeff Layton, Mimi Zohar, David S. Miller, linux-cifs, Paul Moore,
	Darrick J. Wong, Hugh Dickins, kernel-team, selinux,
	Brian Foster, reiserfs-devel, linux-fsdevel, Jaegeuk Kim,
	Theodore Ts'o, Miklos Szeredi, linux-f2fs-devel,
	Benjamin Coddington, linux-integrity, Martin Brandenburg,
	Chris Mason, linux-mtd, linux-afs, Jonathan Corbet,
	Vyacheslav Dubeyko, Allison Henderson, Ilya Dryomov, linux-ext4,
	Stephen Smalley, Serge Hallyn, Eric Paris, ceph-devel, linux-nfs,
	Joseph Qi, samba-technical, linux-xfs, Bob Peterson, Tejun Heo,
	linux-erofs, Anna Schumaker, ocfs2-devel, jfs-discussion,
	Jan Kara, Eric Biggers, Dominique Martinet, linux-unionfs,
	David Howells, linux-mm, Andreas Dilger, devel, J. Bruce Fields,
	Andreas Gruenbacher, Sage Weil, Richard Weinberger, Mark Fasheh,
	cluster-devel, Steve French, v9fs-developer, Bharath Vedartham,
	Jann Horn, ecryptfs, Josef Bacik, Dave Chinner, David Sterba,
	Artem Bityutskiy, netdev, Adrian Hunter, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

On Tue, Aug 27, 2019 at 08:05:15AM -0700, Mark Salyzyn wrote:
> Replace arguments for get and set xattr methods, and __vfs_getxattr
> and __vfs_setaxtr functions with a reference to the following now
> common argument structure:
> 
> struct xattr_gs_args {
> 	struct dentry *dentry;
> 	struct inode *inode;
> 	const char *name;
> 	union {
> 		void *buffer;
> 		const void *value;
> 	};
> 	size_t size;
> 	int flags;
> };
> 
> Which in effect adds a flags option to the get method and
> __vfs_getxattr function.
> 
> Add a flag option to get xattr method that has bit flag of
> XATTR_NOSECURITY passed to it.  XATTR_NOSECURITY is generally then
> set in the __vfs_getxattr path when called by security
> infrastructure.
> 
> This handles the case of a union filesystem driver that is being
> requested by the security layer to report back the xattr data.
> 
> For the use case where access is to be blocked by the security layer.
> 
> The path then could be security(dentry) ->
> __vfs_getxattr({dentry...XATTR_NOSECURITY}) ->
> handler->get({dentry...XATTR_NOSECURITY}) ->
> __vfs_getxattr({lower_dentry...XATTR_NOSECURITY}) ->
> lower_handler->get({lower_dentry...XATTR_NOSECURITY})
> which would report back through the chain data and success as
> expected, the logging security layer at the top would have the
> data to determine the access permissions and report back the target
> context that was blocked.
> 
> Without the get handler flag, the path on a union filesystem would be
> the errant security(dentry) -> __vfs_getxattr(dentry) ->
> handler->get(dentry) -> vfs_getxattr(lower_dentry) -> nested ->
> security(lower_dentry, log off) -> lower_handler->get(lower_dentry)
> which would report back through the chain no data, and -EACCES.
> 
> For selinux for both cases, this would translate to a correctly
> determined blocked access. In the first case with this change a correct avc
> log would be reported, in the second legacy case an incorrect avc log
> would be reported against an uninitialized u:object_r:unlabeled:s0
> context making the logs cosmetically useless for audit2allow.
> 
> This patch series is inert and is the wide-spread addition of the
> flags option for xattr functions, and a replacement of __vfs_getxattr
> with __vfs_getxattr({...XATTR_NOSECURITY}).
> 
> Signed-off-by: Mark Salyzyn <salyzyn@android.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Cc: Stephen Smalley <sds@tycho.nsa.gov>
> Cc: linux-kernel@vger.kernel.org
> Cc: kernel-team@android.com
> Cc: linux-security-module@vger.kernel.org
> Cc: stable@vger.kernel.org # 4.4, 4.9, 4.14 & 4.19
> ---
> v8:
> - Documentation reported 'struct xattr_gs_flags' rather than
>   'struct xattr_gs_flags *args' as argument to get and set methods.

For btrfs

>  fs/btrfs/xattr.c                  |  36 +++++-----

Acked-by: David Sterba <dsterba@suse.com>


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

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
  2019-08-27 15:05 [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr Mark Salyzyn via Linux-f2fs-devel
  2019-08-27 15:49 ` Jeff Layton
  2019-08-27 17:07 ` David Sterba
@ 2019-08-27 21:35 ` Darrick J. Wong
  2019-08-28 14:24 ` Christoph Hellwig
  3 siblings, 0 replies; 7+ messages in thread
From: Darrick J. Wong @ 2019-08-27 21:35 UTC (permalink / raw)
  To: Mark Salyzyn
  Cc: Latchesar Ionkov, Hugh Dickins, Mike Marshall, James Morris,
	devel, Eric Van Hensbergen, Joel Becker, Anna Schumaker,
	Trond Myklebust, Mathieu Malaterre, Greg Kroah-Hartman,
	linux-kernel, Jan Kara, Casey Schaufler, Andrew Morton,
	Dave Kleikamp, linux-doc, Jeff Layton, Mimi Zohar, linux-cifs,
	Paul Moore, Eric Sandeen, kernel-team, selinux, Brian Foster,
	reiserfs-devel, Tejun Heo, Jaegeuk Kim, Theodore Ts'o,
	Miklos Szeredi, linux-f2fs-devel, Benjamin Coddington,
	linux-integrity, Martin Brandenburg, Chris Mason, linux-mtd,
	linux-afs, Jonathan Corbet, Vyacheslav Dubeyko,
	Allison Henderson, Ilya Dryomov, linux-ext4, Stephen Smalley,
	Serge Hallyn, Eric Paris, ceph-devel, linux-nfs, linux-mm,
	samba-technical, linux-xfs, Bob Peterson, linux-fsdevel,
	linux-erofs, David S. Miller, ocfs2-devel, jfs-discussion,
	Jan Kara, Eric Biggers, Dominique Martinet, Adrian Hunter,
	David Howells, Joseph Qi, Andreas Dilger, devel, J. Bruce Fields,
	Andreas Gruenbacher, Sage Weil, Richard Weinberger, Mark Fasheh,
	cluster-devel, Steve French, v9fs-developer, Bharath Vedartham,
	Jann Horn, ecryptfs, Josef Bacik, Dave Chinner, David Sterba,
	Artem Bityutskiy, netdev, linux-unionfs, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

On Tue, Aug 27, 2019 at 08:05:15AM -0700, Mark Salyzyn wrote:
> Replace arguments for get and set xattr methods, and __vfs_getxattr
> and __vfs_setaxtr functions with a reference to the following now
> common argument structure:
> 
> struct xattr_gs_args {
> 	struct dentry *dentry;
> 	struct inode *inode;
> 	const char *name;
> 	union {
> 		void *buffer;
> 		const void *value;
> 	};
> 	size_t size;
> 	int flags;
> };
> 
> Which in effect adds a flags option to the get method and
> __vfs_getxattr function.
> 
> Add a flag option to get xattr method that has bit flag of
> XATTR_NOSECURITY passed to it.  XATTR_NOSECURITY is generally then
> set in the __vfs_getxattr path when called by security
> infrastructure.
> 
> This handles the case of a union filesystem driver that is being
> requested by the security layer to report back the xattr data.
> 
> For the use case where access is to be blocked by the security layer.
> 
> The path then could be security(dentry) ->
> __vfs_getxattr({dentry...XATTR_NOSECURITY}) ->
> handler->get({dentry...XATTR_NOSECURITY}) ->
> __vfs_getxattr({lower_dentry...XATTR_NOSECURITY}) ->
> lower_handler->get({lower_dentry...XATTR_NOSECURITY})
> which would report back through the chain data and success as
> expected, the logging security layer at the top would have the
> data to determine the access permissions and report back the target
> context that was blocked.
> 
> Without the get handler flag, the path on a union filesystem would be
> the errant security(dentry) -> __vfs_getxattr(dentry) ->
> handler->get(dentry) -> vfs_getxattr(lower_dentry) -> nested ->
> security(lower_dentry, log off) -> lower_handler->get(lower_dentry)
> which would report back through the chain no data, and -EACCES.
> 
> For selinux for both cases, this would translate to a correctly
> determined blocked access. In the first case with this change a correct avc
> log would be reported, in the second legacy case an incorrect avc log
> would be reported against an uninitialized u:object_r:unlabeled:s0
> context making the logs cosmetically useless for audit2allow.
> 
> This patch series is inert and is the wide-spread addition of the
> flags option for xattr functions, and a replacement of __vfs_getxattr
> with __vfs_getxattr({...XATTR_NOSECURITY}).
> 
> Signed-off-by: Mark Salyzyn <salyzyn@android.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Cc: Stephen Smalley <sds@tycho.nsa.gov>
> Cc: linux-kernel@vger.kernel.org
> Cc: kernel-team@android.com
> Cc: linux-security-module@vger.kernel.org
> Cc: stable@vger.kernel.org # 4.4, 4.9, 4.14 & 4.19

For the XFS part,
Acked-by: Darrick J. Wong <darrick.wong@oracle.com>

> ---
> v8:
> - Documentation reported 'struct xattr_gs_flags' rather than
>   'struct xattr_gs_flags *args' as argument to get and set methods.
> 
> v7:
> - missed spots in fs/9p/acl.c, fs/afs/xattr.c, fs/ecryptfs/crypto.c,
>   fs/ubifs/xattr.c, fs/xfs/libxfs/xfs_attr.c,
>   security/integrity/evm/evm_main.c and security/smack/smack_lsm.c.
> 
> v6:
> - kernfs missed a spot
> 
> v5:
> - introduce struct xattr_gs_args for get and set methods,
>   __vfs_getxattr and __vfs_setxattr functions.
> - cover a missing spot in ext2.
> - switch from snprintf to scnprintf for correctness.
> 
> v4:
> - ifdef __KERNEL__ around XATTR_NOSECURITY to
>   keep it colocated in uapi headers.
> 
> v3:
> - poor aim on ubifs not ubifs_xattr_get, but static xattr_get
> 
> v2:
> - Missed a spot: ubifs, erofs and afs.
> 
> v1:
> - Removed from an overlayfs patch set, and made independent.
>   Expect this to be the basis of some security improvements.
> ---
>  Documentation/filesystems/Locking |  10 ++-
>  drivers/staging/erofs/xattr.c     |   8 +--
>  fs/9p/acl.c                       |  51 +++++++-------
>  fs/9p/xattr.c                     |  19 +++--
>  fs/afs/xattr.c                    | 112 +++++++++++++-----------------
>  fs/btrfs/xattr.c                  |  36 +++++-----
>  fs/ceph/xattr.c                   |  40 +++++------
>  fs/cifs/xattr.c                   |  72 +++++++++----------
>  fs/ecryptfs/crypto.c              |  20 +++---
>  fs/ecryptfs/inode.c               |  36 ++++++----
>  fs/ecryptfs/mmap.c                |  39 ++++++-----
>  fs/ext2/xattr_security.c          |  16 ++---
>  fs/ext2/xattr_trusted.c           |  15 ++--
>  fs/ext2/xattr_user.c              |  19 +++--
>  fs/ext4/xattr_security.c          |  15 ++--
>  fs/ext4/xattr_trusted.c           |  15 ++--
>  fs/ext4/xattr_user.c              |  19 +++--
>  fs/f2fs/xattr.c                   |  42 +++++------
>  fs/fuse/xattr.c                   |  23 +++---
>  fs/gfs2/xattr.c                   |  18 ++---
>  fs/hfs/attr.c                     |  15 ++--
>  fs/hfsplus/xattr.c                |  17 +++--
>  fs/hfsplus/xattr_security.c       |  13 ++--
>  fs/hfsplus/xattr_trusted.c        |  13 ++--
>  fs/hfsplus/xattr_user.c           |  13 ++--
>  fs/jffs2/security.c               |  16 ++---
>  fs/jffs2/xattr_trusted.c          |  16 ++---
>  fs/jffs2/xattr_user.c             |  16 ++---
>  fs/jfs/xattr.c                    |  33 ++++-----
>  fs/kernfs/inode.c                 |  23 +++---
>  fs/nfs/nfs4proc.c                 |  28 ++++----
>  fs/ocfs2/xattr.c                  |  52 ++++++--------
>  fs/orangefs/xattr.c               |  19 ++---
>  fs/overlayfs/inode.c              |  43 ++++++------
>  fs/overlayfs/overlayfs.h          |   6 +-
>  fs/overlayfs/super.c              |  53 ++++++--------
>  fs/posix_acl.c                    |  23 +++---
>  fs/reiserfs/xattr.c               |   2 +-
>  fs/reiserfs/xattr_security.c      |  22 +++---
>  fs/reiserfs/xattr_trusted.c       |  22 +++---
>  fs/reiserfs/xattr_user.c          |  22 +++---
>  fs/squashfs/xattr.c               |  10 +--
>  fs/ubifs/xattr.c                  |  33 +++++----
>  fs/xattr.c                        | 112 ++++++++++++++++++------------
>  fs/xfs/libxfs/xfs_attr.c          |   4 +-
>  fs/xfs/libxfs/xfs_attr.h          |   2 +-
>  fs/xfs/xfs_xattr.c                |  35 +++++-----
>  include/linux/xattr.h             |  26 ++++---
>  include/uapi/linux/xattr.h        |   7 +-
>  mm/shmem.c                        |  21 +++---
>  net/socket.c                      |  16 ++---
>  security/commoncap.c              |  29 +++++---
>  security/integrity/evm/evm_main.c |  13 +++-
>  security/selinux/hooks.c          |  28 ++++++--
>  security/smack/smack_lsm.c        |  38 ++++++----
>  55 files changed, 732 insertions(+), 734 deletions(-)
> 
> diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
> index 204dd3ea36bb..c16752a41959 100644
> --- a/Documentation/filesystems/Locking
> +++ b/Documentation/filesystems/Locking
> @@ -101,12 +101,10 @@ of the locking scheme for directory operations.
>  ----------------------- xattr_handler operations -----------------------
>  prototypes:
>  	bool (*list)(struct dentry *dentry);
> -	int (*get)(const struct xattr_handler *handler, struct dentry *dentry,
> -		   struct inode *inode, const char *name, void *buffer,
> -		   size_t size);
> -	int (*set)(const struct xattr_handler *handler, struct dentry *dentry,
> -		   struct inode *inode, const char *name, const void *buffer,
> -		   size_t size, int flags);
> +	int (*get)(const struct xattr_handler *handler,
> +		   struct xattr_gs_flags *args);
> +	int (*set)(const struct xattr_handler *handler,
> +		   struct xattr_gs_flags *args);
>  
>  locking rules:
>  	all may block
> diff --git a/drivers/staging/erofs/xattr.c b/drivers/staging/erofs/xattr.c
> index df40654b9fbb..41dcfc82f0b2 100644
> --- a/drivers/staging/erofs/xattr.c
> +++ b/drivers/staging/erofs/xattr.c
> @@ -462,10 +462,9 @@ int erofs_getxattr(struct inode *inode, int index,
>  }
>  
>  static int erofs_xattr_generic_get(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, void *buffer, size_t size)
> +				   struct xattr_gs_args *args)
>  {
> -	struct erofs_sb_info *const sbi = EROFS_I_SB(inode);
> +	struct erofs_sb_info *const sbi = EROFS_I_SB(args->inode);
>  
>  	switch (handler->flags) {
>  	case EROFS_XATTR_INDEX_USER:
> @@ -482,7 +481,8 @@ static int erofs_xattr_generic_get(const struct xattr_handler *handler,
>  		return -EINVAL;
>  	}
>  
> -	return erofs_getxattr(inode, handler->flags, name, buffer, size);
> +	return erofs_getxattr(args->inode, handler->flags, args->name,
> +			      args->buffer, args->size);
>  }
>  
>  const struct xattr_handler erofs_xattr_user_handler = {
> diff --git a/fs/9p/acl.c b/fs/9p/acl.c
> index 6261719f6f2a..2f5184de75c4 100644
> --- a/fs/9p/acl.c
> +++ b/fs/9p/acl.c
> @@ -213,60 +213,61 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep,
>  }
>  
>  static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
> -			      struct dentry *dentry, struct inode *inode,
> -			      const char *name, void *buffer, size_t size)
> +			      struct xattr_gs_args *args)
>  {
>  	struct v9fs_session_info *v9ses;
>  	struct posix_acl *acl;
>  	int error;
>  
> -	v9ses = v9fs_dentry2v9ses(dentry);
> +	v9ses = v9fs_dentry2v9ses(args->dentry);
>  	/*
>  	 * We allow set/get/list of acl when access=client is not specified
>  	 */
>  	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
> -		return v9fs_xattr_get(dentry, handler->name, buffer, size);
> +		return v9fs_xattr_get(args->dentry, handler->name,
> +				      args->buffer, args->size);
>  
> -	acl = v9fs_get_cached_acl(inode, handler->flags);
> +	acl = v9fs_get_cached_acl(args->inode, handler->flags);
>  	if (IS_ERR(acl))
>  		return PTR_ERR(acl);
>  	if (acl == NULL)
>  		return -ENODATA;
> -	error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
> +	error = posix_acl_to_xattr(&init_user_ns, acl,
> +				   args->buffer, args->size);
>  	posix_acl_release(acl);
>  
>  	return error;
>  }
>  
>  static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
> -			      struct dentry *dentry, struct inode *inode,
> -			      const char *name, const void *value,
> -			      size_t size, int flags)
> +			      struct xattr_gs_args *args)
>  {
>  	int retval;
>  	struct posix_acl *acl;
>  	struct v9fs_session_info *v9ses;
>  
> -	v9ses = v9fs_dentry2v9ses(dentry);
> +	v9ses = v9fs_dentry2v9ses(args->dentry);
>  	/*
>  	 * set the attribute on the remote. Without even looking at the
>  	 * xattr value. We leave it to the server to validate
>  	 */
>  	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
> -		return v9fs_xattr_set(dentry, handler->name, value, size,
> -				      flags);
> +		return v9fs_xattr_set(args->dentry, handler->name,
> +				      args->value, args->size, args->flags);
>  
> -	if (S_ISLNK(inode->i_mode))
> +	if (S_ISLNK(args->inode->i_mode))
>  		return -EOPNOTSUPP;
> -	if (!inode_owner_or_capable(inode))
> +	if (!inode_owner_or_capable(args->inode))
>  		return -EPERM;
> -	if (value) {
> +	if (args->value) {
>  		/* update the cached acl value */
> -		acl = posix_acl_from_xattr(&init_user_ns, value, size);
> +		acl = posix_acl_from_xattr(&init_user_ns,
> +					   args->value, args->size);
>  		if (IS_ERR(acl))
>  			return PTR_ERR(acl);
>  		else if (acl) {
> -			retval = posix_acl_valid(inode->i_sb->s_user_ns, acl);
> +			retval = posix_acl_valid(args->inode->i_sb->s_user_ns,
> +						 acl);
>  			if (retval)
>  				goto err_out;
>  		}
> @@ -279,7 +280,8 @@ static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
>  			struct iattr iattr = { 0 };
>  			struct posix_acl *old_acl = acl;
>  
> -			retval = posix_acl_update_mode(inode, &iattr.ia_mode, &acl);
> +			retval = posix_acl_update_mode(args->inode,
> +						       &iattr.ia_mode, &acl);
>  			if (retval)
>  				goto err_out;
>  			if (!acl) {
> @@ -289,19 +291,19 @@ static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
>  				 * update ACL.
>  				 */
>  				posix_acl_release(old_acl);
> -				value = NULL;
> -				size = 0;
> +				args->value = NULL;
> +				args->size = 0;
>  			}
>  			iattr.ia_valid = ATTR_MODE;
>  			/* FIXME should we update ctime ?
>  			 * What is the following setxattr update the
>  			 * mode ?
>  			 */
> -			v9fs_vfs_setattr_dotl(dentry, &iattr);
> +			v9fs_vfs_setattr_dotl(args->dentry, &iattr);
>  		}
>  		break;
>  	case ACL_TYPE_DEFAULT:
> -		if (!S_ISDIR(inode->i_mode)) {
> +		if (!S_ISDIR(args->inode->i_mode)) {
>  			retval = acl ? -EINVAL : 0;
>  			goto err_out;
>  		}
> @@ -309,9 +311,10 @@ static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
>  	default:
>  		BUG();
>  	}
> -	retval = v9fs_xattr_set(dentry, handler->name, value, size, flags);
> +	retval = v9fs_xattr_set(args->dentry, handler->name,
> +				args->value, args->size, args->flags);
>  	if (!retval)
> -		set_cached_acl(inode, handler->flags, acl);
> +		set_cached_acl(args->inode, handler->flags, acl);
>  err_out:
>  	posix_acl_release(acl);
>  	return retval;
> diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c
> index ac8ff8ca4c11..36d4c309be08 100644
> --- a/fs/9p/xattr.c
> +++ b/fs/9p/xattr.c
> @@ -138,22 +138,19 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
>  }
>  
>  static int v9fs_xattr_handler_get(const struct xattr_handler *handler,
> -				  struct dentry *dentry, struct inode *inode,
> -				  const char *name, void *buffer, size_t size)
> +				  struct xattr_gs_args *args)
>  {
> -	const char *full_name = xattr_full_name(handler, name);
> -
> -	return v9fs_xattr_get(dentry, full_name, buffer, size);
> +	return v9fs_xattr_get(args->dentry,
> +			      xattr_full_name(handler, args->name),
> +			      args->buffer, args->size);
>  }
>  
>  static int v9fs_xattr_handler_set(const struct xattr_handler *handler,
> -				  struct dentry *dentry, struct inode *inode,
> -				  const char *name, const void *value,
> -				  size_t size, int flags)
> +				  struct xattr_gs_args *args)
>  {
> -	const char *full_name = xattr_full_name(handler, name);
> -
> -	return v9fs_xattr_set(dentry, full_name, value, size, flags);
> +	return v9fs_xattr_set(args->dentry,
> +			      xattr_full_name(handler, args->name),
> +			      args->value, args->size, args->flags);
>  }
>  
>  static struct xattr_handler v9fs_xattr_user_handler = {
> diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
> index 5552d034090a..787ae107642d 100644
> --- a/fs/afs/xattr.c
> +++ b/fs/afs/xattr.c
> @@ -38,13 +38,11 @@ ssize_t afs_listxattr(struct dentry *dentry, char *buffer, size_t size)
>   * Get a file's ACL.
>   */
>  static int afs_xattr_get_acl(const struct xattr_handler *handler,
> -			     struct dentry *dentry,
> -			     struct inode *inode, const char *name,
> -			     void *buffer, size_t size)
> +			     struct xattr_gs_args *args)
>  {
>  	struct afs_fs_cursor fc;
>  	struct afs_status_cb *scb;
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	struct afs_acl *acl = NULL;
>  	struct key *key;
>  	int ret = -ENOMEM;
> @@ -76,9 +74,9 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
>  
>  	if (ret == 0) {
>  		ret = acl->size;
> -		if (size > 0) {
> -			if (acl->size <= size)
> -				memcpy(buffer, acl->data, acl->size);
> +		if (args->size > 0) {
> +			if (acl->size <= args->size)
> +				memcpy(args->buffer, acl->data, acl->size);
>  			else
>  				ret = -ERANGE;
>  		}
> @@ -96,25 +94,23 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
>   * Set a file's AFS3 ACL.
>   */
>  static int afs_xattr_set_acl(const struct xattr_handler *handler,
> -                             struct dentry *dentry,
> -                             struct inode *inode, const char *name,
> -                             const void *buffer, size_t size, int flags)
> +			     struct xattr_gs_args *args)
>  {
>  	struct afs_fs_cursor fc;
>  	struct afs_status_cb *scb;
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	struct afs_acl *acl = NULL;
>  	struct key *key;
>  	int ret = -ENOMEM;
>  
> -	if (flags == XATTR_CREATE)
> +	if (args->flags == XATTR_CREATE)
>  		return -EINVAL;
>  
>  	scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
>  	if (!scb)
>  		goto error;
>  
> -	acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
> +	acl = kmalloc(sizeof(*acl) + args->size, GFP_KERNEL);
>  	if (!acl)
>  		goto error_scb;
>  
> @@ -124,8 +120,8 @@ static int afs_xattr_set_acl(const struct xattr_handler *handler,
>  		goto error_acl;
>  	}
>  
> -	acl->size = size;
> -	memcpy(acl->data, buffer, size);
> +	acl->size = args->size;
> +	memcpy(acl->data, args->value, args->size);
>  
>  	ret = -ERESTARTSYS;
>  	if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
> @@ -161,25 +157,23 @@ static const struct xattr_handler afs_xattr_afs_acl_handler = {
>   * Get a file's YFS ACL.
>   */
>  static int afs_xattr_get_yfs(const struct xattr_handler *handler,
> -			     struct dentry *dentry,
> -			     struct inode *inode, const char *name,
> -			     void *buffer, size_t size)
> +			     struct xattr_gs_args *args)
>  {
>  	struct afs_fs_cursor fc;
>  	struct afs_status_cb *scb;
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	struct yfs_acl *yacl = NULL;
>  	struct key *key;
>  	char buf[16], *data;
>  	int which = 0, dsize, ret = -ENOMEM;
>  
> -	if (strcmp(name, "acl") == 0)
> +	if (strcmp(args->name, "acl") == 0)
>  		which = 0;
> -	else if (strcmp(name, "acl_inherited") == 0)
> +	else if (strcmp(args->name, "acl_inherited") == 0)
>  		which = 1;
> -	else if (strcmp(name, "acl_num_cleaned") == 0)
> +	else if (strcmp(args->name, "acl_num_cleaned") == 0)
>  		which = 2;
> -	else if (strcmp(name, "vol_acl") == 0)
> +	else if (strcmp(args->name, "vol_acl") == 0)
>  		which = 3;
>  	else
>  		return -EOPNOTSUPP;
> @@ -228,11 +222,11 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
>  		break;
>  	case 1:
>  		data = buf;
> -		dsize = snprintf(buf, sizeof(buf), "%u", yacl->inherit_flag);
> +		dsize = scnprintf(buf, sizeof(buf), "%u", yacl->inherit_flag);
>  		break;
>  	case 2:
>  		data = buf;
> -		dsize = snprintf(buf, sizeof(buf), "%u", yacl->num_cleaned);
> +		dsize = scnprintf(buf, sizeof(buf), "%u", yacl->num_cleaned);
>  		break;
>  	case 3:
>  		data = yacl->vol_acl->data;
> @@ -244,12 +238,12 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
>  	}
>  
>  	ret = dsize;
> -	if (size > 0) {
> -		if (dsize > size) {
> +	if (args->size > 0) {
> +		if (dsize > args->size) {
>  			ret = -ERANGE;
>  			goto error_key;
>  		}
> -		memcpy(buffer, data, dsize);
> +		memcpy(args->buffer, data, dsize);
>  	}
>  
>  error_key:
> @@ -266,31 +260,29 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
>   * Set a file's YFS ACL.
>   */
>  static int afs_xattr_set_yfs(const struct xattr_handler *handler,
> -                             struct dentry *dentry,
> -                             struct inode *inode, const char *name,
> -                             const void *buffer, size_t size, int flags)
> +			     struct xattr_gs_args *args)
>  {
>  	struct afs_fs_cursor fc;
>  	struct afs_status_cb *scb;
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	struct afs_acl *acl = NULL;
>  	struct key *key;
>  	int ret = -ENOMEM;
>  
> -	if (flags == XATTR_CREATE ||
> -	    strcmp(name, "acl") != 0)
> +	if (args->flags == XATTR_CREATE ||
> +	    strcmp(args->name, "acl") != 0)
>  		return -EINVAL;
>  
>  	scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
>  	if (!scb)
>  		goto error;
>  
> -	acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
> +	acl = kmalloc(sizeof(*acl) + args->size, GFP_KERNEL);
>  	if (!acl)
>  		goto error_scb;
>  
> -	acl->size = size;
> -	memcpy(acl->data, buffer, size);
> +	acl->size = args->size;
> +	memcpy(acl->data, args->value, args->size);
>  
>  	key = afs_request_key(vnode->volume->cell);
>  	if (IS_ERR(key)) {
> @@ -332,20 +324,18 @@ static const struct xattr_handler afs_xattr_yfs_handler = {
>   * Get the name of the cell on which a file resides.
>   */
>  static int afs_xattr_get_cell(const struct xattr_handler *handler,
> -			      struct dentry *dentry,
> -			      struct inode *inode, const char *name,
> -			      void *buffer, size_t size)
> +			      struct xattr_gs_args *args)
>  {
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	struct afs_cell *cell = vnode->volume->cell;
>  	size_t namelen;
>  
>  	namelen = cell->name_len;
> -	if (size == 0)
> +	if (args->size == 0)
>  		return namelen;
> -	if (namelen > size)
> +	if (namelen > args->size)
>  		return -ERANGE;
> -	memcpy(buffer, cell->name, namelen);
> +	memcpy(args->buffer, cell->name, namelen);
>  	return namelen;
>  }
>  
> @@ -359,30 +349,30 @@ static const struct xattr_handler afs_xattr_afs_cell_handler = {
>   * hex numbers separated by colons.
>   */
>  static int afs_xattr_get_fid(const struct xattr_handler *handler,
> -			     struct dentry *dentry,
> -			     struct inode *inode, const char *name,
> -			     void *buffer, size_t size)
> +			     struct xattr_gs_args *args)
>  {
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	char text[16 + 1 + 24 + 1 + 8 + 1];
>  	size_t len;
>  
>  	/* The volume ID is 64-bit, the vnode ID is 96-bit and the
>  	 * uniquifier is 32-bit.
>  	 */
> -	len = sprintf(text, "%llx:", vnode->fid.vid);
> +	len = scnprintf(text, sizeof(text), "%llx:", vnode->fid.vid);
>  	if (vnode->fid.vnode_hi)
> -		len += sprintf(text + len, "%x%016llx",
> +		len += scnprintf(text + len, sizeof(text) - len, "%x%016llx",
>  			       vnode->fid.vnode_hi, vnode->fid.vnode);
>  	else
> -		len += sprintf(text + len, "%llx", vnode->fid.vnode);
> -	len += sprintf(text + len, ":%x", vnode->fid.unique);
> +		len += scnprintf(text + len, sizeof(text) - len, "%llx",
> +				 vnode->fid.vnode);
> +	len += scnprintf(text + len, sizeof(text) - len, ":%x",
> +			 vnode->fid.unique);
>  
> -	if (size == 0)
> +	if (args->size == 0)
>  		return len;
> -	if (len > size)
> +	if (len > args->size)
>  		return -ERANGE;
> -	memcpy(buffer, text, len);
> +	memcpy(args->buffer, text, len);
>  	return len;
>  }
>  
> @@ -395,20 +385,18 @@ static const struct xattr_handler afs_xattr_afs_fid_handler = {
>   * Get the name of the volume on which a file resides.
>   */
>  static int afs_xattr_get_volume(const struct xattr_handler *handler,
> -			      struct dentry *dentry,
> -			      struct inode *inode, const char *name,
> -			      void *buffer, size_t size)
> +			      struct xattr_gs_args *args)
>  {
> -	struct afs_vnode *vnode = AFS_FS_I(inode);
> +	struct afs_vnode *vnode = AFS_FS_I(args->inode);
>  	const char *volname = vnode->volume->name;
>  	size_t namelen;
>  
>  	namelen = strlen(volname);
> -	if (size == 0)
> +	if (args->size == 0)
>  		return namelen;
> -	if (namelen > size)
> +	if (namelen > args->size)
>  		return -ERANGE;
> -	memcpy(buffer, volname, namelen);
> +	memcpy(args->buffer, volname, namelen);
>  	return namelen;
>  }
>  
> diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
> index 95d9aebff2c4..e47a0e461bd2 100644
> --- a/fs/btrfs/xattr.c
> +++ b/fs/btrfs/xattr.c
> @@ -352,33 +352,30 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
>  }
>  
>  static int btrfs_xattr_handler_get(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, void *buffer, size_t size)
> +				   struct xattr_gs_args *args)
>  {
> -	name = xattr_full_name(handler, name);
> -	return btrfs_getxattr(inode, name, buffer, size);
> +	return btrfs_getxattr(args->inode,
> +			      xattr_full_name(handler, args->name),
> +			      args->buffer, args->size);
>  }
>  
>  static int btrfs_xattr_handler_set(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, const void *buffer,
> -				   size_t size, int flags)
> +				   struct xattr_gs_args *args)
>  {
> -	name = xattr_full_name(handler, name);
> -	return btrfs_setxattr_trans(inode, name, buffer, size, flags);
> +	return btrfs_setxattr_trans(args->inode,
> +				    xattr_full_name(handler, args->name),
> +				    args->value, args->size, args->flags);
>  }
>  
>  static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler,
> -					struct dentry *unused, struct inode *inode,
> -					const char *name, const void *value,
> -					size_t size, int flags)
> +					struct xattr_gs_args *args)
>  {
>  	int ret;
>  	struct btrfs_trans_handle *trans;
> -	struct btrfs_root *root = BTRFS_I(inode)->root;
> +	struct btrfs_root *root = BTRFS_I(args->inode)->root;
>  
> -	name = xattr_full_name(handler, name);
> -	ret = btrfs_validate_prop(name, value, size);
> +	ret = btrfs_validate_prop(xattr_full_name(handler, args->name),
> +				  args->value, args->size);
>  	if (ret)
>  		return ret;
>  
> @@ -386,11 +383,12 @@ static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler,
>  	if (IS_ERR(trans))
>  		return PTR_ERR(trans);
>  
> -	ret = btrfs_set_prop(trans, inode, name, value, size, flags);
> +	ret = btrfs_set_prop(trans, args->inode, args->name,
> +			     args->value, args->size, args->flags);
>  	if (!ret) {
> -		inode_inc_iversion(inode);
> -		inode->i_ctime = current_time(inode);
> -		ret = btrfs_update_inode(trans, root, inode);
> +		inode_inc_iversion(args->inode);
> +		args->inode->i_ctime = current_time(args->inode);
> +		ret = btrfs_update_inode(trans, root, args->inode);
>  		BUG_ON(ret);
>  	}
>  
> diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
> index 939eab7aa219..c4fee624291b 100644
> --- a/fs/ceph/xattr.c
> +++ b/fs/ceph/xattr.c
> @@ -1179,22 +1179,21 @@ int __ceph_setxattr(struct inode *inode, const char *name,
>  }
>  
>  static int ceph_get_xattr_handler(const struct xattr_handler *handler,
> -				  struct dentry *dentry, struct inode *inode,
> -				  const char *name, void *value, size_t size)
> +				  struct xattr_gs_args *args)
>  {
> -	if (!ceph_is_valid_xattr(name))
> +	if (!ceph_is_valid_xattr(args->name))
>  		return -EOPNOTSUPP;
> -	return __ceph_getxattr(inode, name, value, size);
> +	return __ceph_getxattr(args->inode, args->name,
> +			       args->buffer, args->size);
>  }
>  
>  static int ceph_set_xattr_handler(const struct xattr_handler *handler,
> -				  struct dentry *unused, struct inode *inode,
> -				  const char *name, const void *value,
> -				  size_t size, int flags)
> +				  struct xattr_gs_args *args)
>  {
> -	if (!ceph_is_valid_xattr(name))
> +	if (!ceph_is_valid_xattr(args->name))
>  		return -EOPNOTSUPP;
> -	return __ceph_setxattr(inode, name, value, size, flags);
> +	return __ceph_setxattr(args->inode, args->name,
> +			       args->value, args->size, args->flags);
>  }
>  
>  static const struct xattr_handler ceph_other_xattr_handler = {
> @@ -1300,25 +1299,22 @@ void ceph_security_invalidate_secctx(struct inode *inode)
>  }
>  
>  static int ceph_xattr_set_security_label(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *key, const void *buf,
> -				    size_t buflen, int flags)
> +					 struct xattr_gs_args *args)
>  {
> -	if (security_ismaclabel(key)) {
> -		const char *name = xattr_full_name(handler, key);
> -		return __ceph_setxattr(inode, name, buf, buflen, flags);
> -	}
> +	if (security_ismaclabel(args->name))
> +		return __ceph_setxattr(args->inode,
> +				       xattr_full_name(handler, args->name),
> +				       args->value, args->size, args->flags);
>  	return  -EOPNOTSUPP;
>  }
>  
>  static int ceph_xattr_get_security_label(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *key, void *buf, size_t buflen)
> +					 struct xattr_gs_args *args)
>  {
> -	if (security_ismaclabel(key)) {
> -		const char *name = xattr_full_name(handler, key);
> -		return __ceph_getxattr(inode, name, buf, buflen);
> -	}
> +	if (security_ismaclabel(args->name))
> +		return __ceph_getxattr(args->inode,
> +				       xattr_full_name(handler, args->name),
> +				       args->buffer, args->size);
>  	return  -EOPNOTSUPP;
>  }
>  
> diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
> index 9076150758d8..2506d12c7e5d 100644
> --- a/fs/cifs/xattr.c
> +++ b/fs/cifs/xattr.c
> @@ -48,13 +48,11 @@
>  enum { XATTR_USER, XATTR_CIFS_ACL, XATTR_ACL_ACCESS, XATTR_ACL_DEFAULT };
>  
>  static int cifs_xattr_set(const struct xattr_handler *handler,
> -			  struct dentry *dentry, struct inode *inode,
> -			  const char *name, const void *value,
> -			  size_t size, int flags)
> +			  struct xattr_gs_args *args)
>  {
>  	int rc = -EOPNOTSUPP;
>  	unsigned int xid;
> -	struct super_block *sb = dentry->d_sb;
> +	struct super_block *sb = args->dentry->d_sb;
>  	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
>  	struct tcon_link *tlink;
>  	struct cifs_tcon *pTcon;
> @@ -67,7 +65,7 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
>  
>  	xid = get_xid();
>  
> -	full_path = build_path_from_dentry(dentry);
> +	full_path = build_path_from_dentry(args->dentry);
>  	if (full_path == NULL) {
>  		rc = -ENOMEM;
>  		goto out;
> @@ -78,7 +76,7 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
>  	/* if proc/fs/cifs/streamstoxattr is set then
>  		search server for EAs or streams to
>  		returns as xattrs */
> -	if (size > MAX_EA_VALUE_SIZE) {
> +	if (args->size > MAX_EA_VALUE_SIZE) {
>  		cifs_dbg(FYI, "size of EA value too large\n");
>  		rc = -EOPNOTSUPP;
>  		goto out;
> @@ -91,29 +89,30 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
>  
>  		if (pTcon->ses->server->ops->set_EA)
>  			rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
> -				full_path, name, value, (__u16)size,
> +				full_path, args->name,
> +				args->value, (__u16)args->size,
>  				cifs_sb->local_nls, cifs_sb);
>  		break;
>  
>  	case XATTR_CIFS_ACL: {
>  		struct cifs_ntsd *pacl;
>  
> -		if (!value)
> +		if (!args->value)
>  			goto out;
> -		pacl = kmalloc(size, GFP_KERNEL);
> +		pacl = kmalloc(args->size, GFP_KERNEL);
>  		if (!pacl) {
>  			rc = -ENOMEM;
>  		} else {
> -			memcpy(pacl, value, size);
> -			if (value &&
> +			memcpy(pacl, args->value, args->size);
> +			if (args->value &&
>  			    pTcon->ses->server->ops->set_acl)
>  				rc = pTcon->ses->server->ops->set_acl(pacl,
> -						size, inode,
> +						args->size, args->inode,
>  						full_path, CIFS_ACL_DACL);
>  			else
>  				rc = -EOPNOTSUPP;
>  			if (rc == 0) /* force revalidate of the inode */
> -				CIFS_I(inode)->time = 0;
> +				CIFS_I(args->inode)->time = 0;
>  			kfree(pacl);
>  		}
>  		break;
> @@ -121,11 +120,11 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
>  
>  	case XATTR_ACL_ACCESS:
>  #ifdef CONFIG_CIFS_POSIX
> -		if (!value)
> +		if (!args->value)
>  			goto out;
>  		if (sb->s_flags & SB_POSIXACL)
>  			rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
> -				value, (const int)size,
> +				args->value, (const int)args->size,
>  				ACL_TYPE_ACCESS, cifs_sb->local_nls,
>  				cifs_remap(cifs_sb));
>  #endif  /* CONFIG_CIFS_POSIX */
> @@ -133,11 +132,11 @@ static int cifs_xattr_set(const struct xattr_handler *handler,
>  
>  	case XATTR_ACL_DEFAULT:
>  #ifdef CONFIG_CIFS_POSIX
> -		if (!value)
> +		if (!args->value)
>  			goto out;
>  		if (sb->s_flags & SB_POSIXACL)
>  			rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
> -				value, (const int)size,
> +				args->value, (const int)args->size,
>  				ACL_TYPE_DEFAULT, cifs_sb->local_nls,
>  				cifs_remap(cifs_sb));
>  #endif  /* CONFIG_CIFS_POSIX */
> @@ -198,12 +197,11 @@ static int cifs_creation_time_get(struct dentry *dentry, struct inode *inode,
>  
>  
>  static int cifs_xattr_get(const struct xattr_handler *handler,
> -			  struct dentry *dentry, struct inode *inode,
> -			  const char *name, void *value, size_t size)
> +			  struct xattr_gs_args *args)
>  {
>  	ssize_t rc = -EOPNOTSUPP;
>  	unsigned int xid;
> -	struct super_block *sb = dentry->d_sb;
> +	struct super_block *sb = args->dentry->d_sb;
>  	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
>  	struct tcon_link *tlink;
>  	struct cifs_tcon *pTcon;
> @@ -216,7 +214,7 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
>  
>  	xid = get_xid();
>  
> -	full_path = build_path_from_dentry(dentry);
> +	full_path = build_path_from_dentry(args->dentry);
>  	if (full_path == NULL) {
>  		rc = -ENOMEM;
>  		goto out;
> @@ -225,14 +223,17 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
>  	/* return alt name if available as pseudo attr */
>  	switch (handler->flags) {
>  	case XATTR_USER:
> -		cifs_dbg(FYI, "%s:querying user xattr %s\n", __func__, name);
> -		if ((strcmp(name, CIFS_XATTR_ATTRIB) == 0) ||
> -		    (strcmp(name, SMB3_XATTR_ATTRIB) == 0)) {
> -			rc = cifs_attrib_get(dentry, inode, value, size);
> +		cifs_dbg(FYI, "%s:querying user xattr %s\n", __func__,
> +			 args->name);
> +		if ((strcmp(args->name, CIFS_XATTR_ATTRIB) == 0) ||
> +		    (strcmp(args->name, SMB3_XATTR_ATTRIB) == 0)) {
> +			rc = cifs_attrib_get(args->dentry, args->inode,
> +					     args->buffer, args->size);
>  			break;
> -		} else if ((strcmp(name, CIFS_XATTR_CREATETIME) == 0) ||
> -		    (strcmp(name, SMB3_XATTR_CREATETIME) == 0)) {
> -			rc = cifs_creation_time_get(dentry, inode, value, size);
> +		} else if ((strcmp(args->name, CIFS_XATTR_CREATETIME) == 0) ||
> +		    (strcmp(args->name, SMB3_XATTR_CREATETIME) == 0)) {
> +			rc = cifs_creation_time_get(args->dentry, args->inode,
> +						    args->buffer, args->size);
>  			break;
>  		}
>  
> @@ -241,7 +242,8 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
>  
>  		if (pTcon->ses->server->ops->query_all_EAs)
>  			rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
> -				full_path, name, value, size, cifs_sb);
> +				full_path, args->name,
> +				args->buffer, args->size, cifs_sb);
>  		break;
>  
>  	case XATTR_CIFS_ACL: {
> @@ -252,17 +254,17 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
>  			goto out; /* rc already EOPNOTSUPP */
>  
>  		pacl = pTcon->ses->server->ops->get_acl(cifs_sb,
> -				inode, full_path, &acllen);
> +				args->inode, full_path, &acllen);
>  		if (IS_ERR(pacl)) {
>  			rc = PTR_ERR(pacl);
>  			cifs_dbg(VFS, "%s: error %zd getting sec desc\n",
>  				 __func__, rc);
>  		} else {
> -			if (value) {
> -				if (acllen > size)
> +			if (args->buffer) {
> +				if (acllen > args->size)
>  					acllen = -ERANGE;
>  				else
> -					memcpy(value, pacl, acllen);
> +					memcpy(args->buffer, pacl, acllen);
>  			}
>  			rc = acllen;
>  			kfree(pacl);
> @@ -274,7 +276,7 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
>  #ifdef CONFIG_CIFS_POSIX
>  		if (sb->s_flags & SB_POSIXACL)
>  			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
> -				value, size, ACL_TYPE_ACCESS,
> +				args->buffer, args->size, ACL_TYPE_ACCESS,
>  				cifs_sb->local_nls,
>  				cifs_remap(cifs_sb));
>  #endif  /* CONFIG_CIFS_POSIX */
> @@ -284,7 +286,7 @@ static int cifs_xattr_get(const struct xattr_handler *handler,
>  #ifdef CONFIG_CIFS_POSIX
>  		if (sb->s_flags & SB_POSIXACL)
>  			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
> -				value, size, ACL_TYPE_DEFAULT,
> +				args->buffer, args->size, ACL_TYPE_DEFAULT,
>  				cifs_sb->local_nls,
>  				cifs_remap(cifs_sb));
>  #endif  /* CONFIG_CIFS_POSIX */
> diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
> index f91db24bbf3b..5fbda6491920 100644
> --- a/fs/ecryptfs/crypto.c
> +++ b/fs/ecryptfs/crypto.c
> @@ -1114,20 +1114,24 @@ ecryptfs_write_metadata_to_xattr(struct dentry *ecryptfs_dentry,
>  				 char *page_virt, size_t size)
>  {
>  	int rc;
> -	struct dentry *lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
> -	struct inode *lower_inode = d_inode(lower_dentry);
> +	struct xattr_gs_args lower = {};
>  
> -	if (!(lower_inode->i_opflags & IOP_XATTR)) {
> +	lower.dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
> +	lower.inode = d_inode(lower.dentry);
> +
> +	if (!(lower.inode->i_opflags & IOP_XATTR)) {
>  		rc = -EOPNOTSUPP;
>  		goto out;
>  	}
>  
> -	inode_lock(lower_inode);
> -	rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
> -			    page_virt, size, 0);
> +	lower.name = ECRYPTFS_XATTR_NAME;
> +	lower.value = page_virt;
> +	lower.size = size;
> +	inode_lock(lower.inode);
> +	rc = __vfs_setxattr(&lower);
>  	if (!rc && ecryptfs_inode)
> -		fsstack_copy_attr_all(ecryptfs_inode, lower_inode);
> -	inode_unlock(lower_inode);
> +		fsstack_copy_attr_all(ecryptfs_inode, lower.inode);
> +	inode_unlock(lower.inode);
>  out:
>  	return rc;
>  }
> diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
> index 18426f4855f1..fc4435847a45 100644
> --- a/fs/ecryptfs/inode.c
> +++ b/fs/ecryptfs/inode.c
> @@ -1009,16 +1009,24 @@ ecryptfs_setxattr(struct dentry *dentry, struct inode *inode,
>  
>  ssize_t
>  ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode,
> -			const char *name, void *value, size_t size)
> +			const char *name, void *buffer, size_t size)
>  {
>  	int rc;
> +	struct xattr_gs_args args;
>  
>  	if (!(lower_inode->i_opflags & IOP_XATTR)) {
>  		rc = -EOPNOTSUPP;
>  		goto out;
>  	}
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = lower_dentry;
> +	args.inode = lower_inode;
> +	args.name = name;
> +	args.buffer = buffer;
> +	args.size = size;
> +	args.flags = XATTR_NOSECURITY;
>  	inode_lock(lower_inode);
> -	rc = __vfs_getxattr(lower_dentry, lower_inode, name, value, size);
> +	rc = __vfs_getxattr(&args);
>  	inode_unlock(lower_inode);
>  out:
>  	return rc;
> @@ -1102,23 +1110,23 @@ const struct inode_operations ecryptfs_main_iops = {
>  };
>  
>  static int ecryptfs_xattr_get(const struct xattr_handler *handler,
> -			      struct dentry *dentry, struct inode *inode,
> -			      const char *name, void *buffer, size_t size)
> +			      struct xattr_gs_args *args)
>  {
> -	return ecryptfs_getxattr(dentry, inode, name, buffer, size);
> +	return ecryptfs_getxattr(args->dentry, args->inode, args->name,
> +				 args->buffer, args->size);
>  }
>  
>  static int ecryptfs_xattr_set(const struct xattr_handler *handler,
> -			      struct dentry *dentry, struct inode *inode,
> -			      const char *name, const void *value, size_t size,
> -			      int flags)
> +			      struct xattr_gs_args *args)
>  {
> -	if (value)
> -		return ecryptfs_setxattr(dentry, inode, name, value, size, flags);
> -	else {
> -		BUG_ON(flags != XATTR_REPLACE);
> -		return ecryptfs_removexattr(dentry, inode, name);
> -	}
> +	if (args->value)
> +		return ecryptfs_setxattr(args->dentry, args->inode, args->name,
> +					 args->value, args->size, args->flags);
> +	else if (args->flags != XATTR_REPLACE)
> +		return -EINVAL;
> +	else
> +		return ecryptfs_removexattr(args->dentry, args->inode,
> +					    args->name);
>  }
>  
>  static const struct xattr_handler ecryptfs_xattr_handler = {
> diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
> index cffa0c1ec829..90dc0354ec5e 100644
> --- a/fs/ecryptfs/mmap.c
> +++ b/fs/ecryptfs/mmap.c
> @@ -402,37 +402,40 @@ struct kmem_cache *ecryptfs_xattr_cache;
>  
>  static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
>  {
> -	ssize_t size;
> -	void *xattr_virt;
> -	struct dentry *lower_dentry =
> -		ecryptfs_inode_to_private(ecryptfs_inode)->lower_file->f_path.dentry;
> -	struct inode *lower_inode = d_inode(lower_dentry);
> +	struct xattr_gs_args args;
>  	int rc;
>  
> -	if (!(lower_inode->i_opflags & IOP_XATTR)) {
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = ecryptfs_inode_to_private(ecryptfs_inode)->
> +		lower_file->f_path.dentry;
> +	args.inode = d_inode(args.dentry);
> +	if (!(args.inode->i_opflags & IOP_XATTR)) {
>  		printk(KERN_WARNING
>  		       "No support for setting xattr in lower filesystem\n");
>  		rc = -ENOSYS;
>  		goto out;
>  	}
> -	xattr_virt = kmem_cache_alloc(ecryptfs_xattr_cache, GFP_KERNEL);
> -	if (!xattr_virt) {
> +	args.buffer = kmem_cache_alloc(ecryptfs_xattr_cache, GFP_KERNEL);
> +	if (!args.buffer) {
>  		rc = -ENOMEM;
>  		goto out;
>  	}
> -	inode_lock(lower_inode);
> -	size = __vfs_getxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
> -			      xattr_virt, PAGE_SIZE);
> -	if (size < 0)
> -		size = 8;
> -	put_unaligned_be64(i_size_read(ecryptfs_inode), xattr_virt);
> -	rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
> -			    xattr_virt, size, 0);
> -	inode_unlock(lower_inode);
> +	args.name = ECRYPTFS_XATTR_NAME;
> +	args.size = PAGE_SIZE;
> +	args.flags = XATTR_NOSECURITY;
> +	inode_lock(args.inode);
> +	args.size = __vfs_getxattr(&args);
> +	if (args.size < 0)
> +		args.size = 8;
> +	put_unaligned_be64(i_size_read(ecryptfs_inode), args.buffer);
> +	args.flags = 0;
> +	args.value = args.buffer;
> +	rc = __vfs_setxattr(&args);
> +	inode_unlock(args.inode);
>  	if (rc)
>  		printk(KERN_ERR "Error whilst attempting to write inode size "
>  		       "to lower file xattr; rc = [%d]\n", rc);
> -	kmem_cache_free(ecryptfs_xattr_cache, xattr_virt);
> +	kmem_cache_free(ecryptfs_xattr_cache, args.buffer);
>  out:
>  	return rc;
>  }
> diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
> index 9a682e440acb..d651d4a7c9ca 100644
> --- a/fs/ext2/xattr_security.c
> +++ b/fs/ext2/xattr_security.c
> @@ -10,21 +10,19 @@
>  
>  static int
>  ext2_xattr_security_get(const struct xattr_handler *handler,
> -			struct dentry *unused, struct inode *inode,
> -			const char *name, void *buffer, size_t size)
> +			struct xattr_gs_args *args)
>  {
> -	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
> -			      buffer, size);
> +	return ext2_xattr_get(args->inode, EXT2_XATTR_INDEX_SECURITY,
> +			      args->name, args->buffer, args->size);
>  }
>  
>  static int
>  ext2_xattr_security_set(const struct xattr_handler *handler,
> -			struct dentry *unused, struct inode *inode,
> -			const char *name, const void *value,
> -			size_t size, int flags)
> +			struct xattr_gs_args *args)
>  {
> -	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,
> -			      value, size, flags);
> +	return ext2_xattr_set(args->inode, EXT2_XATTR_INDEX_SECURITY,
> +			      args->name, args->value, args->size,
> +			      args->flags);
>  }
>  
>  static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
> diff --git a/fs/ext2/xattr_trusted.c b/fs/ext2/xattr_trusted.c
> index 49add1107850..41390dd0386a 100644
> --- a/fs/ext2/xattr_trusted.c
> +++ b/fs/ext2/xattr_trusted.c
> @@ -17,21 +17,18 @@ ext2_xattr_trusted_list(struct dentry *dentry)
>  
>  static int
>  ext2_xattr_trusted_get(const struct xattr_handler *handler,
> -		       struct dentry *unused, struct inode *inode,
> -		       const char *name, void *buffer, size_t size)
> +		       struct xattr_gs_args *args)
>  {
> -	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_TRUSTED, name,
> -			      buffer, size);
> +	return ext2_xattr_get(args->inode, EXT2_XATTR_INDEX_TRUSTED, args->name,
> +			      args->buffer, args->size);
>  }
>  
>  static int
>  ext2_xattr_trusted_set(const struct xattr_handler *handler,
> -		       struct dentry *unused, struct inode *inode,
> -		       const char *name, const void *value,
> -		       size_t size, int flags)
> +		       struct xattr_gs_args *args)
>  {
> -	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_TRUSTED, name,
> -			      value, size, flags);
> +	return ext2_xattr_set(args->inode, EXT2_XATTR_INDEX_TRUSTED, args->name,
> +			      args->value, args->size, args->flags);
>  }
>  
>  const struct xattr_handler ext2_xattr_trusted_handler = {
> diff --git a/fs/ext2/xattr_user.c b/fs/ext2/xattr_user.c
> index c243a3b4d69d..1ef881890dde 100644
> --- a/fs/ext2/xattr_user.c
> +++ b/fs/ext2/xattr_user.c
> @@ -19,26 +19,23 @@ ext2_xattr_user_list(struct dentry *dentry)
>  
>  static int
>  ext2_xattr_user_get(const struct xattr_handler *handler,
> -		    struct dentry *unused, struct inode *inode,
> -		    const char *name, void *buffer, size_t size)
> +		    struct xattr_gs_args *args)
>  {
> -	if (!test_opt(inode->i_sb, XATTR_USER))
> +	if (!test_opt(args->inode->i_sb, XATTR_USER))
>  		return -EOPNOTSUPP;
> -	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER,
> -			      name, buffer, size);
> +	return ext2_xattr_get(args->inode, EXT2_XATTR_INDEX_USER, args->name,
> +			      args->buffer, args->size);
>  }
>  
>  static int
>  ext2_xattr_user_set(const struct xattr_handler *handler,
> -		    struct dentry *unused, struct inode *inode,
> -		    const char *name, const void *value,
> -		    size_t size, int flags)
> +		    struct xattr_gs_args *args)
>  {
> -	if (!test_opt(inode->i_sb, XATTR_USER))
> +	if (!test_opt(args->inode->i_sb, XATTR_USER))
>  		return -EOPNOTSUPP;
>  
> -	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_USER,
> -			      name, value, size, flags);
> +	return ext2_xattr_set(args->inode, EXT2_XATTR_INDEX_USER, args->name,
> +			      args->value, args->size, args->flags);
>  }
>  
>  const struct xattr_handler ext2_xattr_user_handler = {
> diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c
> index 197a9d8a15ef..71ed703e01fe 100644
> --- a/fs/ext4/xattr_security.c
> +++ b/fs/ext4/xattr_security.c
> @@ -14,21 +14,18 @@
>  
>  static int
>  ext4_xattr_security_get(const struct xattr_handler *handler,
> -			struct dentry *unused, struct inode *inode,
> -			const char *name, void *buffer, size_t size)
> +			struct xattr_gs_args *args)
>  {
> -	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY,
> -			      name, buffer, size);
> +	return ext4_xattr_get(args->inode, EXT4_XATTR_INDEX_SECURITY,
> +			      args->name, args->buffer, args->size);
>  }
>  
>  static int
>  ext4_xattr_security_set(const struct xattr_handler *handler,
> -			struct dentry *unused, struct inode *inode,
> -			const char *name, const void *value,
> -			size_t size, int flags)
> +			struct xattr_gs_args *args)
>  {
> -	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY,
> -			      name, value, size, flags);
> +	return ext4_xattr_set(args->inode, EXT4_XATTR_INDEX_SECURITY,
> +			      args->name, args->value, args->size, args->flags);
>  }
>  
>  static int
> diff --git a/fs/ext4/xattr_trusted.c b/fs/ext4/xattr_trusted.c
> index e9389e5d75c3..ed347a978102 100644
> --- a/fs/ext4/xattr_trusted.c
> +++ b/fs/ext4/xattr_trusted.c
> @@ -21,21 +21,18 @@ ext4_xattr_trusted_list(struct dentry *dentry)
>  
>  static int
>  ext4_xattr_trusted_get(const struct xattr_handler *handler,
> -		       struct dentry *unused, struct inode *inode,
> -		       const char *name, void *buffer, size_t size)
> +		       struct xattr_gs_args *args)
>  {
> -	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_TRUSTED,
> -			      name, buffer, size);
> +	return ext4_xattr_get(args->inode, EXT4_XATTR_INDEX_TRUSTED,
> +			      args->name, args->buffer, args->size);
>  }
>  
>  static int
>  ext4_xattr_trusted_set(const struct xattr_handler *handler,
> -		       struct dentry *unused, struct inode *inode,
> -		       const char *name, const void *value,
> -		       size_t size, int flags)
> +		       struct xattr_gs_args *args)
>  {
> -	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_TRUSTED,
> -			      name, value, size, flags);
> +	return ext4_xattr_set(args->inode, EXT4_XATTR_INDEX_TRUSTED,
> +			      args->name, args->value, args->size, args->flags);
>  }
>  
>  const struct xattr_handler ext4_xattr_trusted_handler = {
> diff --git a/fs/ext4/xattr_user.c b/fs/ext4/xattr_user.c
> index d4546184b34b..86e9f5a9284d 100644
> --- a/fs/ext4/xattr_user.c
> +++ b/fs/ext4/xattr_user.c
> @@ -20,25 +20,22 @@ ext4_xattr_user_list(struct dentry *dentry)
>  
>  static int
>  ext4_xattr_user_get(const struct xattr_handler *handler,
> -		    struct dentry *unused, struct inode *inode,
> -		    const char *name, void *buffer, size_t size)
> +		    struct xattr_gs_args *args)
>  {
> -	if (!test_opt(inode->i_sb, XATTR_USER))
> +	if (!test_opt(args->inode->i_sb, XATTR_USER))
>  		return -EOPNOTSUPP;
> -	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER,
> -			      name, buffer, size);
> +	return ext4_xattr_get(args->inode, EXT4_XATTR_INDEX_USER,
> +			      args->name, args->buffer, args->size);
>  }
>  
>  static int
>  ext4_xattr_user_set(const struct xattr_handler *handler,
> -		    struct dentry *unused, struct inode *inode,
> -		    const char *name, const void *value,
> -		    size_t size, int flags)
> +		    struct xattr_gs_args *args)
>  {
> -	if (!test_opt(inode->i_sb, XATTR_USER))
> +	if (!test_opt(args->inode->i_sb, XATTR_USER))
>  		return -EOPNOTSUPP;
> -	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,
> -			      name, value, size, flags);
> +	return ext4_xattr_set(args->inode, EXT4_XATTR_INDEX_USER,
> +			      args->name, args->value, args->size, args->flags);
>  }
>  
>  const struct xattr_handler ext4_xattr_user_handler = {
> diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
> index b32c45621679..4fd47b84616f 100644
> --- a/fs/f2fs/xattr.c
> +++ b/fs/f2fs/xattr.c
> @@ -23,10 +23,9 @@
>  #include "xattr.h"
>  
>  static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
> -		struct dentry *unused, struct inode *inode,
> -		const char *name, void *buffer, size_t size)
> +				  struct xattr_gs_args *args)
>  {
> -	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
> +	struct f2fs_sb_info *sbi = F2FS_SB(args->inode->i_sb);
>  
>  	switch (handler->flags) {
>  	case F2FS_XATTR_INDEX_USER:
> @@ -39,16 +38,14 @@ static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
>  	default:
>  		return -EINVAL;
>  	}
> -	return f2fs_getxattr(inode, handler->flags, name,
> -			     buffer, size, NULL);
> +	return f2fs_getxattr(args->inode, handler->flags, args->name,
> +			     args->buffer, args->size, NULL);
>  }
>  
>  static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
> -		struct dentry *unused, struct inode *inode,
> -		const char *name, const void *value,
> -		size_t size, int flags)
> +				  struct xattr_gs_args *args)
>  {
> -	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
> +	struct f2fs_sb_info *sbi = F2FS_SB(args->inode->i_sb);
>  
>  	switch (handler->flags) {
>  	case F2FS_XATTR_INDEX_USER:
> @@ -61,8 +58,8 @@ static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
>  	default:
>  		return -EINVAL;
>  	}
> -	return f2fs_setxattr(inode, handler->flags, name,
> -					value, size, NULL, flags);
> +	return f2fs_setxattr(args->inode, handler->flags, args->name,
> +			     args->value, args->size, NULL, args->flags);
>  }
>  
>  static bool f2fs_xattr_user_list(struct dentry *dentry)
> @@ -78,36 +75,33 @@ static bool f2fs_xattr_trusted_list(struct dentry *dentry)
>  }
>  
>  static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
> -		struct dentry *unused, struct inode *inode,
> -		const char *name, void *buffer, size_t size)
> +				 struct xattr_gs_args *args)
>  {
> -	if (buffer)
> -		*((char *)buffer) = F2FS_I(inode)->i_advise;
> +	if (args->buffer)
> +		*((char *)args->buffer) = F2FS_I(args->inode)->i_advise;
>  	return sizeof(char);
>  }
>  
>  static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
> -		struct dentry *unused, struct inode *inode,
> -		const char *name, const void *value,
> -		size_t size, int flags)
> +				 struct xattr_gs_args *args)
>  {
> -	unsigned char old_advise = F2FS_I(inode)->i_advise;
> +	unsigned char old_advise = F2FS_I(args->inode)->i_advise;
>  	unsigned char new_advise;
>  
> -	if (!inode_owner_or_capable(inode))
> +	if (!inode_owner_or_capable(args->inode))
>  		return -EPERM;
> -	if (value == NULL)
> +	if (args->value == NULL)
>  		return -EINVAL;
>  
> -	new_advise = *(char *)value;
> +	new_advise = *(char *)args->value;
>  	if (new_advise & ~FADVISE_MODIFIABLE_BITS)
>  		return -EINVAL;
>  
>  	new_advise = new_advise & FADVISE_MODIFIABLE_BITS;
>  	new_advise |= old_advise & ~FADVISE_MODIFIABLE_BITS;
>  
> -	F2FS_I(inode)->i_advise = new_advise;
> -	f2fs_mark_inode_dirty_sync(inode, true);
> +	F2FS_I(args->inode)->i_advise = new_advise;
> +	f2fs_mark_inode_dirty_sync(args->inode, true);
>  	return 0;
>  }
>  
> diff --git a/fs/fuse/xattr.c b/fs/fuse/xattr.c
> index 433717640f78..8b8fb719d498 100644
> --- a/fs/fuse/xattr.c
> +++ b/fs/fuse/xattr.c
> @@ -175,21 +175,19 @@ int fuse_removexattr(struct inode *inode, const char *name)
>  }
>  
>  static int fuse_xattr_get(const struct xattr_handler *handler,
> -			 struct dentry *dentry, struct inode *inode,
> -			 const char *name, void *value, size_t size)
> +			  struct xattr_gs_args *args)
>  {
> -	return fuse_getxattr(inode, name, value, size);
> +	return fuse_getxattr(args->inode, args->name, args->buffer, args->size);
>  }
>  
>  static int fuse_xattr_set(const struct xattr_handler *handler,
> -			  struct dentry *dentry, struct inode *inode,
> -			  const char *name, const void *value, size_t size,
> -			  int flags)
> +			  struct xattr_gs_args *args)
>  {
> -	if (!value)
> -		return fuse_removexattr(inode, name);
> +	if (!args->value)
> +		return fuse_removexattr(args->inode, args->name);
>  
> -	return fuse_setxattr(inode, name, value, size, flags);
> +	return fuse_setxattr(args->inode, args->name,
> +			     args->value, args->size, args->flags);
>  }
>  
>  static bool no_xattr_list(struct dentry *dentry)
> @@ -198,16 +196,13 @@ static bool no_xattr_list(struct dentry *dentry)
>  }
>  
>  static int no_xattr_get(const struct xattr_handler *handler,
> -			struct dentry *dentry, struct inode *inode,
> -			const char *name, void *value, size_t size)
> +			struct xattr_gs_args *args)
>  {
>  	return -EOPNOTSUPP;
>  }
>  
>  static int no_xattr_set(const struct xattr_handler *handler,
> -			struct dentry *dentry, struct inode *nodee,
> -			const char *name, const void *value,
> -			size_t size, int flags)
> +			struct xattr_gs_args *args)
>  {
>  	return -EOPNOTSUPP;
>  }
> diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
> index bbe593d16bea..bf8e1bd17a29 100644
> --- a/fs/gfs2/xattr.c
> +++ b/fs/gfs2/xattr.c
> @@ -587,10 +587,9 @@ static int __gfs2_xattr_get(struct inode *inode, const char *name,
>  }
>  
>  static int gfs2_xattr_get(const struct xattr_handler *handler,
> -			  struct dentry *unused, struct inode *inode,
> -			  const char *name, void *buffer, size_t size)
> +			  struct xattr_gs_args *args)
>  {
> -	struct gfs2_inode *ip = GFS2_I(inode);
> +	struct gfs2_inode *ip = GFS2_I(args->inode);
>  	struct gfs2_holder gh;
>  	int ret;
>  
> @@ -603,7 +602,8 @@ static int gfs2_xattr_get(const struct xattr_handler *handler,
>  	} else {
>  		gfs2_holder_mark_uninitialized(&gh);
>  	}
> -	ret = __gfs2_xattr_get(inode, name, buffer, size, handler->flags);
> +	ret = __gfs2_xattr_get(args->inode, args->name,
> +			       args->buffer, args->size, handler->flags);
>  	if (gfs2_holder_initialized(&gh))
>  		gfs2_glock_dq_uninit(&gh);
>  	return ret;
> @@ -1214,11 +1214,9 @@ int __gfs2_xattr_set(struct inode *inode, const char *name,
>  }
>  
>  static int gfs2_xattr_set(const struct xattr_handler *handler,
> -			  struct dentry *unused, struct inode *inode,
> -			  const char *name, const void *value,
> -			  size_t size, int flags)
> +			  struct xattr_gs_args *args)
>  {
> -	struct gfs2_inode *ip = GFS2_I(inode);
> +	struct gfs2_inode *ip = GFS2_I(args->inode);
>  	struct gfs2_holder gh;
>  	int ret;
>  
> @@ -1237,7 +1235,9 @@ static int gfs2_xattr_set(const struct xattr_handler *handler,
>  			return -EIO;
>  		gfs2_holder_mark_uninitialized(&gh);
>  	}
> -	ret = __gfs2_xattr_set(inode, name, value, size, flags, handler->flags);
> +	ret = __gfs2_xattr_set(args->inode, args->name,
> +			       args->value, args->size,
> +			       args->flags, handler->flags);
>  	if (gfs2_holder_initialized(&gh))
>  		gfs2_glock_dq_uninit(&gh);
>  	return ret;
> diff --git a/fs/hfs/attr.c b/fs/hfs/attr.c
> index 74fa62643136..b3355368dc58 100644
> --- a/fs/hfs/attr.c
> +++ b/fs/hfs/attr.c
> @@ -114,21 +114,20 @@ static ssize_t __hfs_getxattr(struct inode *inode, enum hfs_xattr_type type,
>  }
>  
>  static int hfs_xattr_get(const struct xattr_handler *handler,
> -			 struct dentry *unused, struct inode *inode,
> -			 const char *name, void *value, size_t size)
> +			 struct xattr_gs_args *args)
>  {
> -	return __hfs_getxattr(inode, handler->flags, value, size);
> +	return __hfs_getxattr(args->inode, handler->flags,
> +			      args->buffer, args->size);
>  }
>  
>  static int hfs_xattr_set(const struct xattr_handler *handler,
> -			 struct dentry *unused, struct inode *inode,
> -			 const char *name, const void *value, size_t size,
> -			 int flags)
> +			 struct xattr_gs_args *args)
>  {
> -	if (!value)
> +	if (!args->value)
>  		return -EOPNOTSUPP;
>  
> -	return __hfs_setxattr(inode, handler->flags, value, size, flags);
> +	return __hfs_setxattr(args->inode, handler->flags,
> +			      args->value, args->size, args->flags);
>  }
>  
>  static const struct xattr_handler hfs_creator_handler = {
> diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
> index bb0b27d88e50..b6cc7f18bce8 100644
> --- a/fs/hfsplus/xattr.c
> +++ b/fs/hfsplus/xattr.c
> @@ -838,14 +838,13 @@ static int hfsplus_removexattr(struct inode *inode, const char *name)
>  }
>  
>  static int hfsplus_osx_getxattr(const struct xattr_handler *handler,
> -				struct dentry *unused, struct inode *inode,
> -				const char *name, void *buffer, size_t size)
> +				struct xattr_gs_args *args)
>  {
>  	/*
>  	 * Don't allow retrieving properly prefixed attributes
>  	 * by prepending them with "osx."
>  	 */
> -	if (is_known_namespace(name))
> +	if (is_known_namespace(args->name))
>  		return -EOPNOTSUPP;
>  
>  	/*
> @@ -854,19 +853,18 @@ static int hfsplus_osx_getxattr(const struct xattr_handler *handler,
>  	 * creates), so we pass the name through unmodified (after
>  	 * ensuring it doesn't conflict with another namespace).
>  	 */
> -	return __hfsplus_getxattr(inode, name, buffer, size);
> +	return __hfsplus_getxattr(args->inode, args->name,
> +				  args->buffer, args->size);
>  }
>  
>  static int hfsplus_osx_setxattr(const struct xattr_handler *handler,
> -				struct dentry *unused, struct inode *inode,
> -				const char *name, const void *buffer,
> -				size_t size, int flags)
> +				struct xattr_gs_args *args)
>  {
>  	/*
>  	 * Don't allow setting properly prefixed attributes
>  	 * by prepending them with "osx."
>  	 */
> -	if (is_known_namespace(name))
> +	if (is_known_namespace(args->name))
>  		return -EOPNOTSUPP;
>  
>  	/*
> @@ -875,7 +873,8 @@ static int hfsplus_osx_setxattr(const struct xattr_handler *handler,
>  	 * creates), so we pass the name through unmodified (after
>  	 * ensuring it doesn't conflict with another namespace).
>  	 */
> -	return __hfsplus_setxattr(inode, name, buffer, size, flags);
> +	return __hfsplus_setxattr(args->inode, args->name,
> +				  args->value, args->size, args->flags);
>  }
>  
>  const struct xattr_handler hfsplus_xattr_osx_handler = {
> diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c
> index cfbe6a3bfb1e..8a8185eca12e 100644
> --- a/fs/hfsplus/xattr_security.c
> +++ b/fs/hfsplus/xattr_security.c
> @@ -14,20 +14,19 @@
>  #include "xattr.h"
>  
>  static int hfsplus_security_getxattr(const struct xattr_handler *handler,
> -				     struct dentry *unused, struct inode *inode,
> -				     const char *name, void *buffer, size_t size)
> +				     struct xattr_gs_args *args)
>  {
> -	return hfsplus_getxattr(inode, name, buffer, size,
> +	return hfsplus_getxattr(args->inode, args->name,
> +				args->buffer, args->size,
>  				XATTR_SECURITY_PREFIX,
>  				XATTR_SECURITY_PREFIX_LEN);
>  }
>  
>  static int hfsplus_security_setxattr(const struct xattr_handler *handler,
> -				     struct dentry *unused, struct inode *inode,
> -				     const char *name, const void *buffer,
> -				     size_t size, int flags)
> +				     struct xattr_gs_args *args)
>  {
> -	return hfsplus_setxattr(inode, name, buffer, size, flags,
> +	return hfsplus_setxattr(args->inode, args->name,
> +				args->value, args->size, args->flags,
>  				XATTR_SECURITY_PREFIX,
>  				XATTR_SECURITY_PREFIX_LEN);
>  }
> diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c
> index fbad91e1dada..a682a2e363e7 100644
> --- a/fs/hfsplus/xattr_trusted.c
> +++ b/fs/hfsplus/xattr_trusted.c
> @@ -13,20 +13,19 @@
>  #include "xattr.h"
>  
>  static int hfsplus_trusted_getxattr(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *name, void *buffer, size_t size)
> +				    struct xattr_gs_args *args)
>  {
> -	return hfsplus_getxattr(inode, name, buffer, size,
> +	return hfsplus_getxattr(args->inode, args->name,
> +				args->buffer, args->size,
>  				XATTR_TRUSTED_PREFIX,
>  				XATTR_TRUSTED_PREFIX_LEN);
>  }
>  
>  static int hfsplus_trusted_setxattr(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *name, const void *buffer,
> -				    size_t size, int flags)
> +				    struct xattr_gs_args *args)
>  {
> -	return hfsplus_setxattr(inode, name, buffer, size, flags,
> +	return hfsplus_setxattr(args->inode, args->name,
> +				args->buffer, args->size, args->flags,
>  				XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
>  }
>  
> diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c
> index 74d19faf255e..9b58d7ec263d 100644
> --- a/fs/hfsplus/xattr_user.c
> +++ b/fs/hfsplus/xattr_user.c
> @@ -13,20 +13,19 @@
>  #include "xattr.h"
>  
>  static int hfsplus_user_getxattr(const struct xattr_handler *handler,
> -				 struct dentry *unused, struct inode *inode,
> -				 const char *name, void *buffer, size_t size)
> +				 struct xattr_gs_args *args)
>  {
>  
> -	return hfsplus_getxattr(inode, name, buffer, size,
> +	return hfsplus_getxattr(args->inode, args->name,
> +				args->buffer, args->size,
>  				XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
>  }
>  
>  static int hfsplus_user_setxattr(const struct xattr_handler *handler,
> -				 struct dentry *unused, struct inode *inode,
> -				 const char *name, const void *buffer,
> -				 size_t size, int flags)
> +				 struct xattr_gs_args *args)
>  {
> -	return hfsplus_setxattr(inode, name, buffer, size, flags,
> +	return hfsplus_setxattr(args->inode, args->name,
> +				args->value, args->size, args->flags,
>  				XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
>  }
>  
> diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
> index c2332e30f218..6aa552db3807 100644
> --- a/fs/jffs2/security.c
> +++ b/fs/jffs2/security.c
> @@ -49,20 +49,18 @@ int jffs2_init_security(struct inode *inode, struct inode *dir,
>  
>  /* ---- XATTR Handler for "security.*" ----------------- */
>  static int jffs2_security_getxattr(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, void *buffer, size_t size)
> +				   struct xattr_gs_args *args)
>  {
> -	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_SECURITY,
> -				 name, buffer, size);
> +	return do_jffs2_getxattr(args->inode, JFFS2_XPREFIX_SECURITY,
> +				 args->name, args->buffer, args->size);
>  }
>  
>  static int jffs2_security_setxattr(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, const void *buffer,
> -				   size_t size, int flags)
> +				   struct xattr_gs_args *args)
>  {
> -	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
> -				 name, buffer, size, flags);
> +	return do_jffs2_setxattr(args->inode, JFFS2_XPREFIX_SECURITY,
> +				 args->name, args->value, args->size,
> +				 args->flags);
>  }
>  
>  const struct xattr_handler jffs2_security_xattr_handler = {
> diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c
> index 5d6030826c52..5d235175d6fd 100644
> --- a/fs/jffs2/xattr_trusted.c
> +++ b/fs/jffs2/xattr_trusted.c
> @@ -17,20 +17,18 @@
>  #include "nodelist.h"
>  
>  static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
> -				  struct dentry *unused, struct inode *inode,
> -				  const char *name, void *buffer, size_t size)
> +				  struct xattr_gs_args *args)
>  {
> -	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED,
> -				 name, buffer, size);
> +	return do_jffs2_getxattr(args->inode, JFFS2_XPREFIX_TRUSTED,
> +				 args->name, args->buffer, args->size);
>  }
>  
>  static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
> -				  struct dentry *unused, struct inode *inode,
> -				  const char *name, const void *buffer,
> -				  size_t size, int flags)
> +				  struct xattr_gs_args *args)
>  {
> -	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED,
> -				 name, buffer, size, flags);
> +	return do_jffs2_setxattr(args->inode, JFFS2_XPREFIX_TRUSTED,
> +				 args->name, args->value, args->size,
> +				 args->flags);
>  }
>  
>  static bool jffs2_trusted_listxattr(struct dentry *dentry)
> diff --git a/fs/jffs2/xattr_user.c b/fs/jffs2/xattr_user.c
> index 9d027b4abcf9..a35a0785e72b 100644
> --- a/fs/jffs2/xattr_user.c
> +++ b/fs/jffs2/xattr_user.c
> @@ -17,20 +17,18 @@
>  #include "nodelist.h"
>  
>  static int jffs2_user_getxattr(const struct xattr_handler *handler,
> -			       struct dentry *unused, struct inode *inode,
> -			       const char *name, void *buffer, size_t size)
> +			       struct xattr_gs_args *args)
>  {
> -	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER,
> -				 name, buffer, size);
> +	return do_jffs2_getxattr(args->inode, JFFS2_XPREFIX_USER,
> +				 args->name, args->buffer, args->size);
>  }
>  
>  static int jffs2_user_setxattr(const struct xattr_handler *handler,
> -			       struct dentry *unused, struct inode *inode,
> -			       const char *name, const void *buffer,
> -			       size_t size, int flags)
> +			       struct xattr_gs_args *args)
>  {
> -	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_USER,
> -				 name, buffer, size, flags);
> +	return do_jffs2_setxattr(args->inode, JFFS2_XPREFIX_USER,
> +				 args->name, args->value, args->size,
> +				 args->flags);
>  }
>  
>  const struct xattr_handler jffs2_user_xattr_handler = {
> diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
> index db41e7803163..225fc440ff62 100644
> --- a/fs/jfs/xattr.c
> +++ b/fs/jfs/xattr.c
> @@ -924,39 +924,36 @@ static int __jfs_xattr_set(struct inode *inode, const char *name,
>  }
>  
>  static int jfs_xattr_get(const struct xattr_handler *handler,
> -			 struct dentry *unused, struct inode *inode,
> -			 const char *name, void *value, size_t size)
> +			 struct xattr_gs_args *args)
>  {
> -	name = xattr_full_name(handler, name);
> -	return __jfs_getxattr(inode, name, value, size);
> +	return __jfs_getxattr(args->inode, xattr_full_name(handler, args->name),
> +			      args->buffer, args->size);
>  }
>  
>  static int jfs_xattr_set(const struct xattr_handler *handler,
> -			 struct dentry *unused, struct inode *inode,
> -			 const char *name, const void *value,
> -			 size_t size, int flags)
> +			 struct xattr_gs_args *args)
>  {
> -	name = xattr_full_name(handler, name);
> -	return __jfs_xattr_set(inode, name, value, size, flags);
> +	return __jfs_xattr_set(args->inode,
> +			       xattr_full_name(handler, args->name),
> +			       args->value, args->size, args->flags);
>  }
>  
>  static int jfs_xattr_get_os2(const struct xattr_handler *handler,
> -			     struct dentry *unused, struct inode *inode,
> -			     const char *name, void *value, size_t size)
> +			     struct xattr_gs_args *args)
>  {
> -	if (is_known_namespace(name))
> +	if (is_known_namespace(args->name))
>  		return -EOPNOTSUPP;
> -	return __jfs_getxattr(inode, name, value, size);
> +	return __jfs_getxattr(args->inode, args->name,
> +			      args->buffer, args->size);
>  }
>  
>  static int jfs_xattr_set_os2(const struct xattr_handler *handler,
> -			     struct dentry *unused, struct inode *inode,
> -			     const char *name, const void *value,
> -			     size_t size, int flags)
> +			     struct xattr_gs_args *args)
>  {
> -	if (is_known_namespace(name))
> +	if (is_known_namespace(args->name))
>  		return -EOPNOTSUPP;
> -	return __jfs_xattr_set(inode, name, value, size, flags);
> +	return __jfs_xattr_set(args->inode, args->name,
> +			       args->value, args->size, args->flags);
>  }
>  
>  static const struct xattr_handler jfs_user_xattr_handler = {
> diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
> index f3f3984cce80..1ae646a0b20b 100644
> --- a/fs/kernfs/inode.c
> +++ b/fs/kernfs/inode.c
> @@ -288,13 +288,13 @@ int kernfs_iop_permission(struct inode *inode, int mask)
>  }
>  
>  int kernfs_xattr_get(struct kernfs_node *kn, const char *name,
> -		     void *value, size_t size)
> +		     void *buffer, size_t size)
>  {
>  	struct kernfs_iattrs *attrs = kernfs_iattrs_noalloc(kn);
>  	if (!attrs)
>  		return -ENODATA;
>  
> -	return simple_xattr_get(&attrs->xattrs, name, value, size);
> +	return simple_xattr_get(&attrs->xattrs, name, buffer, size);
>  }
>  
>  int kernfs_xattr_set(struct kernfs_node *kn, const char *name,
> @@ -308,24 +308,21 @@ int kernfs_xattr_set(struct kernfs_node *kn, const char *name,
>  }
>  
>  static int kernfs_vfs_xattr_get(const struct xattr_handler *handler,
> -				struct dentry *unused, struct inode *inode,
> -				const char *suffix, void *value, size_t size)
> +				struct xattr_gs_args *args)
>  {
> -	const char *name = xattr_full_name(handler, suffix);
> -	struct kernfs_node *kn = inode->i_private;
> +	struct kernfs_node *kn = args->inode->i_private;
>  
> -	return kernfs_xattr_get(kn, name, value, size);
> +	return kernfs_xattr_get(kn, xattr_full_name(handler, args->name),
> +				args->buffer, args->size);
>  }
>  
>  static int kernfs_vfs_xattr_set(const struct xattr_handler *handler,
> -				struct dentry *unused, struct inode *inode,
> -				const char *suffix, const void *value,
> -				size_t size, int flags)
> +				struct xattr_gs_args *args)
>  {
> -	const char *name = xattr_full_name(handler, suffix);
> -	struct kernfs_node *kn = inode->i_private;
> +	struct kernfs_node *kn = args->inode->i_private;
>  
> -	return kernfs_xattr_set(kn, name, value, size, flags);
> +	return kernfs_xattr_set(kn, xattr_full_name(handler, args->name),
> +				args->value, args->size, args->flags);
>  }
>  
>  static const struct xattr_handler kernfs_trusted_xattr_handler = {
> diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
> index 1406858bae6c..1f0388440ec9 100644
> --- a/fs/nfs/nfs4proc.c
> +++ b/fs/nfs/nfs4proc.c
> @@ -7209,18 +7209,15 @@ nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
>  #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
>  
>  static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *key, const void *buf,
> -				   size_t buflen, int flags)
> +				   struct xattr_gs_args *args)
>  {
> -	return nfs4_proc_set_acl(inode, buf, buflen);
> +	return nfs4_proc_set_acl(args->inode, args->value, args->size);
>  }
>  
>  static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *key, void *buf, size_t buflen)
> +				   struct xattr_gs_args *args)
>  {
> -	return nfs4_proc_get_acl(inode, buf, buflen);
> +	return nfs4_proc_get_acl(args->inode, args->buffer, args->size);
>  }
>  
>  static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
> @@ -7231,22 +7228,21 @@ static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
>  #ifdef CONFIG_NFS_V4_SECURITY_LABEL
>  
>  static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
> -				     struct dentry *unused, struct inode *inode,
> -				     const char *key, const void *buf,
> -				     size_t buflen, int flags)
> +				     struct xattr_gs_args *args)
>  {
> -	if (security_ismaclabel(key))
> -		return nfs4_set_security_label(inode, buf, buflen);
> +	if (security_ismaclabel(args->name))
> +		return nfs4_set_security_label(args->inode,
> +					       args->value, args->size);
>  
>  	return -EOPNOTSUPP;
>  }
>  
>  static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler,
> -				     struct dentry *unused, struct inode *inode,
> -				     const char *key, void *buf, size_t buflen)
> +				     struct xattr_gs_args *args)
>  {
> -	if (security_ismaclabel(key))
> -		return nfs4_get_security_label(inode, buf, buflen);
> +	if (security_ismaclabel(args->name))
> +		return nfs4_get_security_label(args->inode,
> +					       args->buffer, args->size);
>  	return -EOPNOTSUPP;
>  }
>  
> diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
> index 90c830e3758e..25ac1557e303 100644
> --- a/fs/ocfs2/xattr.c
> +++ b/fs/ocfs2/xattr.c
> @@ -7241,20 +7241,18 @@ int ocfs2_init_security_and_acl(struct inode *dir,
>   * 'security' attributes support
>   */
>  static int ocfs2_xattr_security_get(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *name, void *buffer, size_t size)
> +				    struct xattr_gs_args *args)
>  {
> -	return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_SECURITY,
> -			       name, buffer, size);
> +	return ocfs2_xattr_get(args->inode, OCFS2_XATTR_INDEX_SECURITY,
> +			       args->name, args->buffer, args->size);
>  }
>  
>  static int ocfs2_xattr_security_set(const struct xattr_handler *handler,
> -				    struct dentry *unused, struct inode *inode,
> -				    const char *name, const void *value,
> -				    size_t size, int flags)
> +				    struct xattr_gs_args *args)
>  {
> -	return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,
> -			       name, value, size, flags);
> +	return ocfs2_xattr_set(args->inode, OCFS2_XATTR_INDEX_SECURITY,
> +			       args->name, args->value, args->size,
> +			       args->flags);
>  }
>  
>  static int ocfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
> @@ -7313,20 +7311,18 @@ const struct xattr_handler ocfs2_xattr_security_handler = {
>   * 'trusted' attributes support
>   */
>  static int ocfs2_xattr_trusted_get(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, void *buffer, size_t size)
> +				   struct xattr_gs_args *args)
>  {
> -	return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_TRUSTED,
> -			       name, buffer, size);
> +	return ocfs2_xattr_get(args->inode, OCFS2_XATTR_INDEX_TRUSTED,
> +			       args->name, args->buffer, args->size);
>  }
>  
>  static int ocfs2_xattr_trusted_set(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, const void *value,
> -				   size_t size, int flags)
> +				   struct xattr_gs_args *args)
>  {
> -	return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_TRUSTED,
> -			       name, value, size, flags);
> +	return ocfs2_xattr_set(args->inode, OCFS2_XATTR_INDEX_TRUSTED,
> +			       args->name, args->value, args->size,
> +			       args->flags);
>  }
>  
>  const struct xattr_handler ocfs2_xattr_trusted_handler = {
> @@ -7339,29 +7335,27 @@ const struct xattr_handler ocfs2_xattr_trusted_handler = {
>   * 'user' attributes support
>   */
>  static int ocfs2_xattr_user_get(const struct xattr_handler *handler,
> -				struct dentry *unused, struct inode *inode,
> -				const char *name, void *buffer, size_t size)
> +				struct xattr_gs_args *args)
>  {
> -	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
> +	struct ocfs2_super *osb = OCFS2_SB(args->inode->i_sb);
>  
>  	if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
>  		return -EOPNOTSUPP;
> -	return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_USER, name,
> -			       buffer, size);
> +	return ocfs2_xattr_get(args->inode, OCFS2_XATTR_INDEX_USER, args->name,
> +			       args->buffer, args->size);
>  }
>  
>  static int ocfs2_xattr_user_set(const struct xattr_handler *handler,
> -				struct dentry *unused, struct inode *inode,
> -				const char *name, const void *value,
> -				size_t size, int flags)
> +				struct xattr_gs_args *args)
>  {
> -	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
> +	struct ocfs2_super *osb = OCFS2_SB(args->inode->i_sb);
>  
>  	if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
>  		return -EOPNOTSUPP;
>  
> -	return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_USER,
> -			       name, value, size, flags);
> +	return ocfs2_xattr_set(args->inode, OCFS2_XATTR_INDEX_USER,
> +			       args->name, args->value, args->size,
> +			       args->flags);
>  }
>  
>  const struct xattr_handler ocfs2_xattr_user_handler = {
> diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c
> index bdc285aea360..d222922af141 100644
> --- a/fs/orangefs/xattr.c
> +++ b/fs/orangefs/xattr.c
> @@ -526,24 +526,17 @@ ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size)
>  }
>  
>  static int orangefs_xattr_set_default(const struct xattr_handler *handler,
> -				      struct dentry *unused,
> -				      struct inode *inode,
> -				      const char *name,
> -				      const void *buffer,
> -				      size_t size,
> -				      int flags)
> +				      struct xattr_gs_args *args)
>  {
> -	return orangefs_inode_setxattr(inode, name, buffer, size, flags);
> +	return orangefs_inode_setxattr(args->inode, args->name,
> +				       args->value, args->size, args->flags);
>  }
>  
>  static int orangefs_xattr_get_default(const struct xattr_handler *handler,
> -				      struct dentry *unused,
> -				      struct inode *inode,
> -				      const char *name,
> -				      void *buffer,
> -				      size_t size)
> +				      struct xattr_gs_args *args)
>  {
> -	return orangefs_inode_getxattr(inode, name, buffer, size);
> +	return orangefs_inode_getxattr(args->inode, args->name,
> +				       args->buffer, args->size);
>  
>  }
>  
> diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
> index 7663aeb85fa3..a14d450b8564 100644
> --- a/fs/overlayfs/inode.c
> +++ b/fs/overlayfs/inode.c
> @@ -318,60 +318,61 @@ bool ovl_is_private_xattr(const char *name)
>  		       sizeof(OVL_XATTR_PREFIX) - 1) == 0;
>  }
>  
> -int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char *name,
> -		  const void *value, size_t size, int flags)
> +int ovl_xattr_set(struct xattr_gs_args *args)
>  {
>  	int err;
> -	struct dentry *upperdentry = ovl_i_dentry_upper(inode);
> -	struct dentry *realdentry = upperdentry ?: ovl_dentry_lower(dentry);
> +	struct dentry *upperdentry = ovl_i_dentry_upper(args->inode);
> +	struct dentry *realdentry =
> +		upperdentry ?: ovl_dentry_lower(args->dentry);
>  	const struct cred *old_cred;
>  
> -	err = ovl_want_write(dentry);
> +	err = ovl_want_write(args->dentry);
>  	if (err)
>  		goto out;
>  
> -	if (!value && !upperdentry) {
> -		err = vfs_getxattr(realdentry, name, NULL, 0);
> +	if (!args->value && !upperdentry) {
> +		err = vfs_getxattr(realdentry, args->name, NULL, 0);
>  		if (err < 0)
>  			goto out_drop_write;
>  	}
>  
>  	if (!upperdentry) {
> -		err = ovl_copy_up(dentry);
> +		err = ovl_copy_up(args->dentry);
>  		if (err)
>  			goto out_drop_write;
>  
> -		realdentry = ovl_dentry_upper(dentry);
> +		realdentry = ovl_dentry_upper(args->dentry);
>  	}
>  
> -	old_cred = ovl_override_creds(dentry->d_sb);
> -	if (value)
> -		err = vfs_setxattr(realdentry, name, value, size, flags);
> +	old_cred = ovl_override_creds(args->dentry->d_sb);
> +	if (args->value)
> +		err = vfs_setxattr(realdentry, args->name,
> +				   args->value, args->size, args->flags);
>  	else {
> -		WARN_ON(flags != XATTR_REPLACE);
> -		err = vfs_removexattr(realdentry, name);
> +		WARN_ON(args->flags != XATTR_REPLACE);
> +		err = vfs_removexattr(realdentry, args->name);
>  	}
>  	revert_creds(old_cred);
>  
>  	/* copy c/mtime */
> -	ovl_copyattr(d_inode(realdentry), inode);
> +	ovl_copyattr(d_inode(realdentry), args->inode);
>  
>  out_drop_write:
> -	ovl_drop_write(dentry);
> +	ovl_drop_write(args->dentry);
>  out:
>  	return err;
>  }
>  
> -int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char *name,
> -		  void *value, size_t size)
> +int ovl_xattr_get(struct xattr_gs_args *args)
>  {
>  	ssize_t res;
>  	const struct cred *old_cred;
>  	struct dentry *realdentry =
> -		ovl_i_dentry_upper(inode) ?: ovl_dentry_lower(dentry);
> +		ovl_i_dentry_upper(args->inode) ?:
> +		ovl_dentry_lower(args->dentry);
>  
> -	old_cred = ovl_override_creds(dentry->d_sb);
> -	res = vfs_getxattr(realdentry, name, value, size);
> +	old_cred = ovl_override_creds(args->dentry->d_sb);
> +	res = vfs_getxattr(realdentry, args->name, args->buffer, args->size);
>  	revert_creds(old_cred);
>  	return res;
>  }
> diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
> index 6934bcf030f0..c6a8ec049099 100644
> --- a/fs/overlayfs/overlayfs.h
> +++ b/fs/overlayfs/overlayfs.h
> @@ -353,10 +353,8 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr);
>  int ovl_getattr(const struct path *path, struct kstat *stat,
>  		u32 request_mask, unsigned int flags);
>  int ovl_permission(struct inode *inode, int mask);
> -int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char *name,
> -		  const void *value, size_t size, int flags);
> -int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char *name,
> -		  void *value, size_t size);
> +int ovl_xattr_set(struct xattr_gs_args *args);
> +int ovl_xattr_get(struct xattr_gs_args *args);
>  ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size);
>  struct posix_acl *ovl_get_acl(struct inode *inode, int type);
>  int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags);
> diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
> index b368e2e102fa..e41359ba9159 100644
> --- a/fs/overlayfs/super.c
> +++ b/fs/overlayfs/super.c
> @@ -853,26 +853,24 @@ static unsigned int ovl_split_lowerdirs(char *str)
>  
>  static int __maybe_unused
>  ovl_posix_acl_xattr_get(const struct xattr_handler *handler,
> -			struct dentry *dentry, struct inode *inode,
> -			const char *name, void *buffer, size_t size)
> +			struct xattr_gs_args *args)
>  {
> -	return ovl_xattr_get(dentry, inode, handler->name, buffer, size);
> +	return ovl_xattr_get(args);
>  }
>  
>  static int __maybe_unused
>  ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
> -			struct dentry *dentry, struct inode *inode,
> -			const char *name, const void *value,
> -			size_t size, int flags)
> +			struct xattr_gs_args *args)
>  {
> -	struct dentry *workdir = ovl_workdir(dentry);
> -	struct inode *realinode = ovl_inode_real(inode);
> +	struct dentry *workdir = ovl_workdir(args->dentry);
> +	struct inode *realinode = ovl_inode_real(args->inode);
>  	struct posix_acl *acl = NULL;
>  	int err;
>  
>  	/* Check that everything is OK before copy-up */
> -	if (value) {
> -		acl = posix_acl_from_xattr(&init_user_ns, value, size);
> +	if (args->value) {
> +		acl = posix_acl_from_xattr(&init_user_ns,
> +					   args->value, args->size);
>  		if (IS_ERR(acl))
>  			return PTR_ERR(acl);
>  	}
> @@ -881,12 +879,13 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
>  		goto out_acl_release;
>  	if (!realinode->i_op->set_acl)
>  		goto out_acl_release;
> -	if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) {
> +	if (handler->flags == ACL_TYPE_DEFAULT &&
> +	    !S_ISDIR(args->inode->i_mode)) {
>  		err = acl ? -EACCES : 0;
>  		goto out_acl_release;
>  	}
>  	err = -EPERM;
> -	if (!inode_owner_or_capable(inode))
> +	if (!inode_owner_or_capable(args->inode))
>  		goto out_acl_release;
>  
>  	posix_acl_release(acl);
> @@ -895,20 +894,20 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
>  	 * Check if sgid bit needs to be cleared (actual setacl operation will
>  	 * be done with mounter's capabilities and so that won't do it for us).
>  	 */
> -	if (unlikely(inode->i_mode & S_ISGID) &&
> +	if (unlikely(args->inode->i_mode & S_ISGID) &&
>  	    handler->flags == ACL_TYPE_ACCESS &&
> -	    !in_group_p(inode->i_gid) &&
> -	    !capable_wrt_inode_uidgid(inode, CAP_FSETID)) {
> +	    !in_group_p(args->inode->i_gid) &&
> +	    !capable_wrt_inode_uidgid(args->inode, CAP_FSETID)) {
>  		struct iattr iattr = { .ia_valid = ATTR_KILL_SGID };
>  
> -		err = ovl_setattr(dentry, &iattr);
> +		err = ovl_setattr(args->dentry, &iattr);
>  		if (err)
>  			return err;
>  	}
>  
> -	err = ovl_xattr_set(dentry, inode, handler->name, value, size, flags);
> +	err = ovl_xattr_set(args);
>  	if (!err)
> -		ovl_copyattr(ovl_inode_real(inode), inode);
> +		ovl_copyattr(ovl_inode_real(args->inode), args->inode);
>  
>  	return err;
>  
> @@ -918,33 +917,27 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
>  }
>  
>  static int ovl_own_xattr_get(const struct xattr_handler *handler,
> -			     struct dentry *dentry, struct inode *inode,
> -			     const char *name, void *buffer, size_t size)
> +			     struct xattr_gs_args *args)
>  {
>  	return -EOPNOTSUPP;
>  }
>  
>  static int ovl_own_xattr_set(const struct xattr_handler *handler,
> -			     struct dentry *dentry, struct inode *inode,
> -			     const char *name, const void *value,
> -			     size_t size, int flags)
> +			     struct xattr_gs_args *args)
>  {
>  	return -EOPNOTSUPP;
>  }
>  
>  static int ovl_other_xattr_get(const struct xattr_handler *handler,
> -			       struct dentry *dentry, struct inode *inode,
> -			       const char *name, void *buffer, size_t size)
> +			       struct xattr_gs_args *args)
>  {
> -	return ovl_xattr_get(dentry, inode, name, buffer, size);
> +	return ovl_xattr_get(args);
>  }
>  
>  static int ovl_other_xattr_set(const struct xattr_handler *handler,
> -			       struct dentry *dentry, struct inode *inode,
> -			       const char *name, const void *value,
> -			       size_t size, int flags)
> +			       struct xattr_gs_args *args)
>  {
> -	return ovl_xattr_set(dentry, inode, name, value, size, flags);
> +	return ovl_xattr_set(args);
>  }
>  
>  static const struct xattr_handler __maybe_unused
> diff --git a/fs/posix_acl.c b/fs/posix_acl.c
> index 84ad1c90d535..8cc7310386fe 100644
> --- a/fs/posix_acl.c
> +++ b/fs/posix_acl.c
> @@ -831,24 +831,24 @@ EXPORT_SYMBOL (posix_acl_to_xattr);
>  
>  static int
>  posix_acl_xattr_get(const struct xattr_handler *handler,
> -		    struct dentry *unused, struct inode *inode,
> -		    const char *name, void *value, size_t size)
> +		    struct xattr_gs_args *args)
>  {
>  	struct posix_acl *acl;
>  	int error;
>  
> -	if (!IS_POSIXACL(inode))
> +	if (!IS_POSIXACL(args->inode))
>  		return -EOPNOTSUPP;
> -	if (S_ISLNK(inode->i_mode))
> +	if (S_ISLNK(args->inode->i_mode))
>  		return -EOPNOTSUPP;
>  
> -	acl = get_acl(inode, handler->flags);
> +	acl = get_acl(args->inode, handler->flags);
>  	if (IS_ERR(acl))
>  		return PTR_ERR(acl);
>  	if (acl == NULL)
>  		return -ENODATA;
>  
> -	error = posix_acl_to_xattr(&init_user_ns, acl, value, size);
> +	error = posix_acl_to_xattr(&init_user_ns, acl,
> +				   args->buffer, args->size);
>  	posix_acl_release(acl);
>  
>  	return error;
> @@ -878,19 +878,18 @@ EXPORT_SYMBOL(set_posix_acl);
>  
>  static int
>  posix_acl_xattr_set(const struct xattr_handler *handler,
> -		    struct dentry *unused, struct inode *inode,
> -		    const char *name, const void *value,
> -		    size_t size, int flags)
> +		    struct xattr_gs_args *args)
>  {
>  	struct posix_acl *acl = NULL;
>  	int ret;
>  
> -	if (value) {
> -		acl = posix_acl_from_xattr(&init_user_ns, value, size);
> +	if (args->value) {
> +		acl = posix_acl_from_xattr(&init_user_ns,
> +					   args->value, args->size);
>  		if (IS_ERR(acl))
>  			return PTR_ERR(acl);
>  	}
> -	ret = set_posix_acl(inode, handler->flags, acl);
> +	ret = set_posix_acl(args->inode, handler->flags, acl);
>  	posix_acl_release(acl);
>  	return ret;
>  }
> diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
> index b5b26d8a192c..b949a55b95bd 100644
> --- a/fs/reiserfs/xattr.c
> +++ b/fs/reiserfs/xattr.c
> @@ -765,7 +765,7 @@ reiserfs_xattr_get(struct inode *inode, const char *name, void *buffer,
>  /* This is the implementation for the xattr plugin infrastructure */
>  static inline const struct xattr_handler *
>  find_xattr_handler_prefix(const struct xattr_handler **handlers,
> -			   const char *name)
> +			  const char *name)
>  {
>  	const struct xattr_handler *xah;
>  
> diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c
> index 20be9a0e5870..6d436ef207d1 100644
> --- a/fs/reiserfs/xattr_security.c
> +++ b/fs/reiserfs/xattr_security.c
> @@ -10,27 +10,25 @@
>  #include <linux/uaccess.h>
>  
>  static int
> -security_get(const struct xattr_handler *handler, struct dentry *unused,
> -	     struct inode *inode, const char *name, void *buffer, size_t size)
> +security_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
> -	if (IS_PRIVATE(inode))
> +	if (IS_PRIVATE(args->inode))
>  		return -EPERM;
>  
> -	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
> -				  buffer, size);
> +	return reiserfs_xattr_get(args->inode,
> +				  xattr_full_name(handler, args->name),
> +				  args->buffer, args->size);
>  }
>  
>  static int
> -security_set(const struct xattr_handler *handler, struct dentry *unused,
> -	     struct inode *inode, const char *name, const void *buffer,
> -	     size_t size, int flags)
> +security_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
> -	if (IS_PRIVATE(inode))
> +	if (IS_PRIVATE(args->inode))
>  		return -EPERM;
>  
> -	return reiserfs_xattr_set(inode,
> -				  xattr_full_name(handler, name),
> -				  buffer, size, flags);
> +	return reiserfs_xattr_set(args->inode,
> +				  xattr_full_name(handler, args->name),
> +				  args->value, args->size, args->flags);
>  }
>  
>  static bool security_list(struct dentry *dentry)
> diff --git a/fs/reiserfs/xattr_trusted.c b/fs/reiserfs/xattr_trusted.c
> index 5ed48da3d02b..46dfc6e2e150 100644
> --- a/fs/reiserfs/xattr_trusted.c
> +++ b/fs/reiserfs/xattr_trusted.c
> @@ -9,27 +9,25 @@
>  #include <linux/uaccess.h>
>  
>  static int
> -trusted_get(const struct xattr_handler *handler, struct dentry *unused,
> -	    struct inode *inode, const char *name, void *buffer, size_t size)
> +trusted_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
> -	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
> +	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(args->inode))
>  		return -EPERM;
>  
> -	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
> -				  buffer, size);
> +	return reiserfs_xattr_get(args->inode,
> +				  xattr_full_name(handler, args->name),
> +				  args->buffer, args->size);
>  }
>  
>  static int
> -trusted_set(const struct xattr_handler *handler, struct dentry *unused,
> -	    struct inode *inode, const char *name, const void *buffer,
> -	    size_t size, int flags)
> +trusted_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
> -	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
> +	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(args->inode))
>  		return -EPERM;
>  
> -	return reiserfs_xattr_set(inode,
> -				  xattr_full_name(handler, name),
> -				  buffer, size, flags);
> +	return reiserfs_xattr_set(args->inode,
> +				  xattr_full_name(handler, args->name),
> +				  args->value, args->size, args->flags);
>  }
>  
>  static bool trusted_list(struct dentry *dentry)
> diff --git a/fs/reiserfs/xattr_user.c b/fs/reiserfs/xattr_user.c
> index a573ca45bacc..4a0bafe62d05 100644
> --- a/fs/reiserfs/xattr_user.c
> +++ b/fs/reiserfs/xattr_user.c
> @@ -8,25 +8,23 @@
>  #include <linux/uaccess.h>
>  
>  static int
> -user_get(const struct xattr_handler *handler, struct dentry *unused,
> -	 struct inode *inode, const char *name, void *buffer, size_t size)
> +user_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
> -	if (!reiserfs_xattrs_user(inode->i_sb))
> +	if (!reiserfs_xattrs_user(args->inode->i_sb))
>  		return -EOPNOTSUPP;
> -	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
> -				  buffer, size);
> +	return reiserfs_xattr_get(args->inode,
> +				  xattr_full_name(handler, args->name),
> +				  args->buffer, args->size);
>  }
>  
>  static int
> -user_set(const struct xattr_handler *handler, struct dentry *unused,
> -	 struct inode *inode, const char *name, const void *buffer,
> -	 size_t size, int flags)
> +user_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
> -	if (!reiserfs_xattrs_user(inode->i_sb))
> +	if (!reiserfs_xattrs_user(args->inode->i_sb))
>  		return -EOPNOTSUPP;
> -	return reiserfs_xattr_set(inode,
> -				  xattr_full_name(handler, name),
> -				  buffer, size, flags);
> +	return reiserfs_xattr_set(args->inode,
> +				  xattr_full_name(handler, args->name),
> +				  args->value, args->size, args->flags);
>  }
>  
>  static bool user_list(struct dentry *dentry)
> diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
> index e1e3f3dd5a06..c6403f187ced 100644
> --- a/fs/squashfs/xattr.c
> +++ b/fs/squashfs/xattr.c
> @@ -199,15 +199,11 @@ static int squashfs_xattr_get(struct inode *inode, int name_index,
>  	return err;
>  }
>  
> -
>  static int squashfs_xattr_handler_get(const struct xattr_handler *handler,
> -				      struct dentry *unused,
> -				      struct inode *inode,
> -				      const char *name,
> -				      void *buffer, size_t size)
> +				      struct xattr_gs_args *args)
>  {
> -	return squashfs_xattr_get(inode, handler->flags, name,
> -		buffer, size);
> +	return squashfs_xattr_get(args->inode, handler->flags, args->name,
> +				  args->buffer, args->size);
>  }
>  
>  /*
> diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
> index 9aefbb60074f..aec02d94f2d6 100644
> --- a/fs/ubifs/xattr.c
> +++ b/fs/ubifs/xattr.c
> @@ -668,30 +668,29 @@ int ubifs_init_security(struct inode *dentry, struct inode *inode,
>  #endif
>  
>  static int xattr_get(const struct xattr_handler *handler,
> -			   struct dentry *dentry, struct inode *inode,
> -			   const char *name, void *buffer, size_t size)
> +		     struct xattr_gs_args *args)
>  {
> -	dbg_gen("xattr '%s', ino %lu ('%pd'), buf size %zd", name,
> -		inode->i_ino, dentry, size);
> +	dbg_gen("xattr '%s', ino %lu ('%pd'), buf size %zd", args->name,
> +		args->inode->i_ino, args->dentry, args->size);
>  
> -	name = xattr_full_name(handler, name);
> -	return ubifs_xattr_get(inode, name, buffer, size);
> +	return ubifs_xattr_get(args->inode,
> +			       xattr_full_name(handler, args->name),
> +			       args->buffer, args->size);
>  }
>  
>  static int xattr_set(const struct xattr_handler *handler,
> -			   struct dentry *dentry, struct inode *inode,
> -			   const char *name, const void *value,
> -			   size_t size, int flags)
> +		     struct xattr_gs_args *args)
>  {
>  	dbg_gen("xattr '%s', host ino %lu ('%pd'), size %zd",
> -		name, inode->i_ino, dentry, size);
> -
> -	name = xattr_full_name(handler, name);
> -
> -	if (value)
> -		return ubifs_xattr_set(inode, name, value, size, flags, true);
> -	else
> -		return ubifs_xattr_remove(inode, name);
> +		args->name, args->inode->i_ino, args->dentry, args->size);
> +
> +	if (args->value)
> +		return ubifs_xattr_set(args->inode,
> +				       xattr_full_name(handler, args->name),
> +				       args->value, args->size,
> +				       args->flags, true);
> +	return ubifs_xattr_remove(args->inode,
> +				  xattr_full_name(handler, args->name));
>  }
>  
>  static const struct xattr_handler ubifs_user_xattr_handler = {
> diff --git a/fs/xattr.c b/fs/xattr.c
> index 90dd78f0eb27..dceb5afe79be 100644
> --- a/fs/xattr.c
> +++ b/fs/xattr.c
> @@ -135,19 +135,18 @@ xattr_permission(struct inode *inode, const char *name, int mask)
>  }
>  
>  int
> -__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
> -	       const void *value, size_t size, int flags)
> +__vfs_setxattr(struct xattr_gs_args *args)
>  {
>  	const struct xattr_handler *handler;
>  
> -	handler = xattr_resolve_name(inode, &name);
> +	handler = xattr_resolve_name(args->inode, &args->name);
>  	if (IS_ERR(handler))
>  		return PTR_ERR(handler);
>  	if (!handler->set)
>  		return -EOPNOTSUPP;
> -	if (size == 0)
> -		value = "";  /* empty EA, do not remove */
> -	return handler->set(handler, dentry, inode, name, value, size, flags);
> +	if (args->size == 0)
> +		args->value = "";  /* empty EA, do not remove */
> +	return handler->set(handler, args);
>  }
>  EXPORT_SYMBOL(__vfs_setxattr);
>  
> @@ -178,7 +177,16 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
>  	if (issec)
>  		inode->i_flags &= ~S_NOSEC;
>  	if (inode->i_opflags & IOP_XATTR) {
> -		error = __vfs_setxattr(dentry, inode, name, value, size, flags);
> +		struct xattr_gs_args args = {
> +			.dentry = dentry,
> +			.inode = inode,
> +			.name = name,
> +			.value = value,
> +			.size = size,
> +			.flags = flags,
> +		};
> +
> +		error = __vfs_setxattr(&args);
>  		if (!error) {
>  			fsnotify_xattr(dentry);
>  			security_inode_post_setxattr(dentry, name, value,
> @@ -268,68 +276,61 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
>  		   size_t xattr_size, gfp_t flags)
>  {
>  	const struct xattr_handler *handler;
> -	struct inode *inode = dentry->d_inode;
> -	char *value = *xattr_value;
> +	struct xattr_gs_args args;
>  	int error;
>  
> -	error = xattr_permission(inode, name, MAY_READ);
> +	error = xattr_permission(dentry->d_inode, name, MAY_READ);
>  	if (error)
>  		return error;
>  
> -	handler = xattr_resolve_name(inode, &name);
> +	handler = xattr_resolve_name(dentry->d_inode, &name);
>  	if (IS_ERR(handler))
>  		return PTR_ERR(handler);
>  	if (!handler->get)
>  		return -EOPNOTSUPP;
> -	error = handler->get(handler, dentry, inode, name, NULL, 0);
> +	memset(&args, 0, sizeof(args));
> +	args.inode = dentry->d_inode;
> +	args.dentry = dentry;
> +	args.name = name;
> +	error = handler->get(handler, &args);
>  	if (error < 0)
>  		return error;
>  
> -	if (!value || (error > xattr_size)) {
> -		value = krealloc(*xattr_value, error + 1, flags);
> -		if (!value)
> +	args.buffer = *xattr_value;
> +	if (!*xattr_value || (error > xattr_size)) {
> +		args.buffer = krealloc(*xattr_value, error + 1, flags);
> +		if (!args.buffer)
>  			return -ENOMEM;
> -		memset(value, 0, error + 1);
> +		memset(args.buffer, 0, error + 1);
>  	}
>  
> -	error = handler->get(handler, dentry, inode, name, value, error);
> -	*xattr_value = value;
> +	args.size = error;
> +	error = handler->get(handler, &args);
> +	*xattr_value = args.buffer;
>  	return error;
>  }
>  
>  ssize_t
> -__vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
> -	       void *value, size_t size)
> +__vfs_getxattr(struct xattr_gs_args *args)
>  {
>  	const struct xattr_handler *handler;
> -
> -	handler = xattr_resolve_name(inode, &name);
> -	if (IS_ERR(handler))
> -		return PTR_ERR(handler);
> -	if (!handler->get)
> -		return -EOPNOTSUPP;
> -	return handler->get(handler, dentry, inode, name, value, size);
> -}
> -EXPORT_SYMBOL(__vfs_getxattr);
> -
> -ssize_t
> -vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
> -{
> -	struct inode *inode = dentry->d_inode;
>  	int error;
>  
> -	error = xattr_permission(inode, name, MAY_READ);
> +	if (args->flags & XATTR_NOSECURITY)
> +		goto nolsm;
> +	error = xattr_permission(args->inode, args->name, MAY_READ);
>  	if (error)
>  		return error;
>  
> -	error = security_inode_getxattr(dentry, name);
> +	error = security_inode_getxattr(args->dentry, args->name);
>  	if (error)
>  		return error;
>  
> -	if (!strncmp(name, XATTR_SECURITY_PREFIX,
> +	if (!strncmp(args->name, XATTR_SECURITY_PREFIX,
>  				XATTR_SECURITY_PREFIX_LEN)) {
> -		const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
> -		int ret = xattr_getsecurity(inode, suffix, value, size);
> +		const char *suffix = args->name + XATTR_SECURITY_PREFIX_LEN;
> +		int ret = xattr_getsecurity(args->inode, suffix,
> +					    args->buffer, args->size);
>  		/*
>  		 * Only overwrite the return value if a security module
>  		 * is actually active.
> @@ -339,7 +340,27 @@ vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
>  		return ret;
>  	}
>  nolsm:
> -	return __vfs_getxattr(dentry, inode, name, value, size);
> +	handler = xattr_resolve_name(args->inode, &args->name);
> +	if (IS_ERR(handler))
> +		return PTR_ERR(handler);
> +	if (!handler->get)
> +		return -EOPNOTSUPP;
> +	return handler->get(handler, args);
> +}
> +EXPORT_SYMBOL(__vfs_getxattr);
> +
> +ssize_t
> +vfs_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size)
> +{
> +	struct xattr_gs_args args = {
> +		.dentry = dentry,
> +		.inode = dentry->d_inode,
> +		.name = name,
> +		.buffer = buffer,
> +		.size = size,
> +	};
> +
> +	return __vfs_getxattr(&args);
>  }
>  EXPORT_SYMBOL_GPL(vfs_getxattr);
>  
> @@ -366,15 +387,20 @@ EXPORT_SYMBOL_GPL(vfs_listxattr);
>  int
>  __vfs_removexattr(struct dentry *dentry, const char *name)
>  {
> -	struct inode *inode = d_inode(dentry);
>  	const struct xattr_handler *handler;
> +	struct xattr_gs_args args;
>  
> -	handler = xattr_resolve_name(inode, &name);
> +	handler = xattr_resolve_name(d_inode(dentry), &name);
>  	if (IS_ERR(handler))
>  		return PTR_ERR(handler);
>  	if (!handler->set)
>  		return -EOPNOTSUPP;
> -	return handler->set(handler, dentry, inode, name, NULL, 0, XATTR_REPLACE);
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = dentry;
> +	args.inode = d_inode(dentry);
> +	args.name = name;
> +	args.flags = XATTR_REPLACE;
> +	return handler->set(handler, &args);
>  }
>  EXPORT_SYMBOL(__vfs_removexattr);
>  
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index d48fcf11cc35..60fec712f60b 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -305,7 +305,7 @@ int
>  xfs_attr_set(
>  	struct xfs_inode	*dp,
>  	const unsigned char	*name,
> -	unsigned char		*value,
> +	const unsigned char	*value,
>  	int			valuelen,
>  	int			flags)
>  {
> @@ -324,7 +324,7 @@ xfs_attr_set(
>  	if (error)
>  		return error;
>  
> -	args.value = value;
> +	args.value = (unsigned char *)value;
>  	args.valuelen = valuelen;
>  	args.op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
>  	args.total = xfs_attr_calc_size(&args, &local);
> diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
> index ff28ebf3b635..afe184e5fb01 100644
> --- a/fs/xfs/libxfs/xfs_attr.h
> +++ b/fs/xfs/libxfs/xfs_attr.h
> @@ -145,7 +145,7 @@ int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
>  int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
>  		 unsigned char *value, int *valuelenp, int flags);
>  int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
> -		 unsigned char *value, int valuelen, int flags);
> +		 const unsigned char *value, int valuelen, int flags);
>  int xfs_attr_set_args(struct xfs_da_args *args);
>  int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
>  int xfs_attr_remove_args(struct xfs_da_args *args);
> diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
> index 3123b5aaad2a..313a828a3d1f 100644
> --- a/fs/xfs/xfs_xattr.c
> +++ b/fs/xfs/xfs_xattr.c
> @@ -17,20 +17,20 @@
>  
>  
>  static int
> -xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
> -		struct inode *inode, const char *name, void *value, size_t size)
> +xfs_xattr_get(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
>  	int xflags = handler->flags;
> -	struct xfs_inode *ip = XFS_I(inode);
> -	int error, asize = size;
> +	struct xfs_inode *ip = XFS_I(args->inode);
> +	int error, asize = args->size;
>  
>  	/* Convert Linux syscall to XFS internal ATTR flags */
> -	if (!size) {
> +	if (!args->size) {
>  		xflags |= ATTR_KERNOVAL;
> -		value = NULL;
> +		args->buffer = NULL;
>  	}
>  
> -	error = xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags);
> +	error = xfs_attr_get(ip, (const unsigned char *)args->name,
> +			     args->buffer, &asize, xflags);
>  	if (error)
>  		return error;
>  	return asize;
> @@ -59,26 +59,25 @@ xfs_forget_acl(
>  }
>  
>  static int
> -xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
> -		struct inode *inode, const char *name, const void *value,
> -		size_t size, int flags)
> +xfs_xattr_set(const struct xattr_handler *handler, struct xattr_gs_args *args)
>  {
>  	int			xflags = handler->flags;
> -	struct xfs_inode	*ip = XFS_I(inode);
> +	struct xfs_inode	*ip = XFS_I(args->inode);
>  	int			error;
>  
>  	/* Convert Linux syscall to XFS internal ATTR flags */
> -	if (flags & XATTR_CREATE)
> +	if (args->flags & XATTR_CREATE)
>  		xflags |= ATTR_CREATE;
> -	if (flags & XATTR_REPLACE)
> +	if (args->flags & XATTR_REPLACE)
>  		xflags |= ATTR_REPLACE;
>  
> -	if (!value)
> -		return xfs_attr_remove(ip, (unsigned char *)name, xflags);
> -	error = xfs_attr_set(ip, (unsigned char *)name,
> -				(void *)value, size, xflags);
> +	if (!args->value)
> +		return xfs_attr_remove(ip, (const unsigned char *)args->name,
> +				       xflags);
> +	error = xfs_attr_set(ip, (const unsigned char *)args->name,
> +			     args->value, args->size, xflags);
>  	if (!error)
> -		xfs_forget_acl(inode, name, xflags);
> +		xfs_forget_acl(args->inode, args->name, xflags);
>  
>  	return error;
>  }
> diff --git a/include/linux/xattr.h b/include/linux/xattr.h
> index 6dad031be3c2..b2afbdcf000f 100644
> --- a/include/linux/xattr.h
> +++ b/include/linux/xattr.h
> @@ -25,17 +25,27 @@ struct dentry;
>   * name.  When @prefix is set instead, match attributes with that prefix and
>   * with a non-empty suffix.
>   */
> +struct xattr_gs_args {
> +	struct dentry *dentry;
> +	struct inode *inode;
> +	const char *name;
> +	union {
> +		void *buffer;
> +		const void *value;
> +	};
> +	size_t size;
> +	int flags;
> +};
> +
>  struct xattr_handler {
>  	const char *name;
>  	const char *prefix;
>  	int flags;      /* fs private flags */
>  	bool (*list)(struct dentry *dentry);
> -	int (*get)(const struct xattr_handler *, struct dentry *dentry,
> -		   struct inode *inode, const char *name, void *buffer,
> -		   size_t size);
> -	int (*set)(const struct xattr_handler *, struct dentry *dentry,
> -		   struct inode *inode, const char *name, const void *buffer,
> -		   size_t size, int flags);
> +	int (*get)(const struct xattr_handler *handler,
> +		   struct xattr_gs_args *args);
> +	int (*set)(const struct xattr_handler *handler,
> +		   struct xattr_gs_args *args);
>  };
>  
>  const char *xattr_full_name(const struct xattr_handler *, const char *);
> @@ -46,10 +56,10 @@ struct xattr {
>  	size_t value_len;
>  };
>  
> -ssize_t __vfs_getxattr(struct dentry *, struct inode *, const char *, void *, size_t);
> +ssize_t __vfs_getxattr(struct xattr_gs_args *args);
>  ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
>  ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
> -int __vfs_setxattr(struct dentry *, struct inode *, const char *, const void *, size_t, int);
> +int __vfs_setxattr(struct xattr_gs_args *args);
>  int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
>  int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
>  int __vfs_removexattr(struct dentry *, const char *);
> diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h
> index c1395b5bd432..1eba02616274 100644
> --- a/include/uapi/linux/xattr.h
> +++ b/include/uapi/linux/xattr.h
> @@ -17,8 +17,11 @@
>  #if __UAPI_DEF_XATTR
>  #define __USE_KERNEL_XATTR_DEFS
>  
> -#define XATTR_CREATE	0x1	/* set value, fail if attr already exists */
> -#define XATTR_REPLACE	0x2	/* set value, fail if attr does not exist */
> +#define XATTR_CREATE	 0x1	/* set value, fail if attr already exists */
> +#define XATTR_REPLACE	 0x2	/* set value, fail if attr does not exist */
> +#ifdef __KERNEL__ /* following is kernel internal, colocated for maintenance */
> +#define XATTR_NOSECURITY 0x4	/* get value, do not involve security check */
> +#endif
>  #endif
>  
>  /* Namespaces */
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 2bed4761f279..c84687f57e43 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -3205,24 +3205,23 @@ static int shmem_initxattrs(struct inode *inode,
>  }
>  
>  static int shmem_xattr_handler_get(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, void *buffer, size_t size)
> +				   struct xattr_gs_args *args)
>  {
> -	struct shmem_inode_info *info = SHMEM_I(inode);
> +	struct shmem_inode_info *info = SHMEM_I(args->inode);
>  
> -	name = xattr_full_name(handler, name);
> -	return simple_xattr_get(&info->xattrs, name, buffer, size);
> +	return simple_xattr_get(&info->xattrs,
> +				xattr_full_name(handler, args->name),
> +				args->buffer, args->size);
>  }
>  
>  static int shmem_xattr_handler_set(const struct xattr_handler *handler,
> -				   struct dentry *unused, struct inode *inode,
> -				   const char *name, const void *value,
> -				   size_t size, int flags)
> +				   struct xattr_gs_args *args)
>  {
> -	struct shmem_inode_info *info = SHMEM_I(inode);
> +	struct shmem_inode_info *info = SHMEM_I(args->inode);
>  
> -	name = xattr_full_name(handler, name);
> -	return simple_xattr_set(&info->xattrs, name, value, size, flags);
> +	return simple_xattr_set(&info->xattrs,
> +				xattr_full_name(handler, args->name),
> +				args->value, args->size, args->flags);
>  }
>  
>  static const struct xattr_handler shmem_security_xattr_handler = {
> diff --git a/net/socket.c b/net/socket.c
> index 6a9ab7a8b1d2..7920caece7cc 100644
> --- a/net/socket.c
> +++ b/net/socket.c
> @@ -299,15 +299,15 @@ static const struct dentry_operations sockfs_dentry_operations = {
>  };
>  
>  static int sockfs_xattr_get(const struct xattr_handler *handler,
> -			    struct dentry *dentry, struct inode *inode,
> -			    const char *suffix, void *value, size_t size)
> +			    struct xattr_gs_args *args)
>  {
> -	if (value) {
> -		if (dentry->d_name.len + 1 > size)
> +	if (args->buffer) {
> +		if (args->dentry->d_name.len + 1 > args->size)
>  			return -ERANGE;
> -		memcpy(value, dentry->d_name.name, dentry->d_name.len + 1);
> +		memcpy(args->buffer, args->dentry->d_name.name,
> +		       args->dentry->d_name.len + 1);
>  	}
> -	return dentry->d_name.len + 1;
> +	return args->dentry->d_name.len + 1;
>  }
>  
>  #define XATTR_SOCKPROTONAME_SUFFIX "sockprotoname"
> @@ -320,9 +320,7 @@ static const struct xattr_handler sockfs_xattr_handler = {
>  };
>  
>  static int sockfs_security_xattr_set(const struct xattr_handler *handler,
> -				     struct dentry *dentry, struct inode *inode,
> -				     const char *suffix, const void *value,
> -				     size_t size, int flags)
> +				     struct xattr_gs_args *args)
>  {
>  	/* Handled by LSM. */
>  	return -EAGAIN;
> diff --git a/security/commoncap.c b/security/commoncap.c
> index f4ee0ae106b2..c58b684d5d9a 100644
> --- a/security/commoncap.c
> +++ b/security/commoncap.c
> @@ -294,11 +294,15 @@ int cap_capset(struct cred *new,
>   */
>  int cap_inode_need_killpriv(struct dentry *dentry)
>  {
> -	struct inode *inode = d_backing_inode(dentry);
> -	int error;
> +	struct xattr_gs_args args;
> +
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = dentry;
> +	args.inode = d_backing_inode(dentry);
> +	args.name = XATTR_NAME_CAPS;
> +	args.flags = XATTR_NOSECURITY;
>  
> -	error = __vfs_getxattr(dentry, inode, XATTR_NAME_CAPS, NULL, 0);
> -	return error > 0;
> +	return __vfs_getxattr(&args) > 0;
>  }
>  
>  /**
> @@ -570,7 +574,7 @@ static inline int bprm_caps_from_vfs_caps(struct cpu_vfs_cap_data *caps,
>   */
>  int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps)
>  {
> -	struct inode *inode = d_backing_inode(dentry);
> +	struct xattr_gs_args args;
>  	__u32 magic_etc;
>  	unsigned tocopy, i;
>  	int size;
> @@ -580,13 +584,20 @@ int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data
>  	struct user_namespace *fs_ns;
>  
>  	memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
> +	memset(&args, 0, sizeof(args));
>  
> -	if (!inode)
> +	args.dentry = (struct dentry *)dentry;
> +	args.inode = d_backing_inode(args.dentry);
> +	if (!args.inode)
>  		return -ENODATA;
>  
> -	fs_ns = inode->i_sb->s_user_ns;
> -	size = __vfs_getxattr((struct dentry *)dentry, inode,
> -			      XATTR_NAME_CAPS, &data, XATTR_CAPS_SZ);
> +	fs_ns = args.inode->i_sb->s_user_ns;
> +
> +	args.name = XATTR_NAME_CAPS;
> +	args.buffer = &data;
> +	args.size = XATTR_CAPS_SZ;
> +	args.flags = XATTR_NOSECURITY;
> +	size = __vfs_getxattr(&args);
>  	if (size == -ENODATA || size == -EOPNOTSUPP)
>  		/* no data, that's ok */
>  		return -ENODATA;
> diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
> index f9a81b187fae..a53ef9281186 100644
> --- a/security/integrity/evm/evm_main.c
> +++ b/security/integrity/evm/evm_main.c
> @@ -91,16 +91,23 @@ static bool evm_key_loaded(void)
>  
>  static int evm_find_protected_xattrs(struct dentry *dentry)
>  {
> -	struct inode *inode = d_backing_inode(dentry);
> +	struct xattr_gs_args args;
>  	struct xattr_list *xattr;
>  	int error;
>  	int count = 0;
>  
> -	if (!(inode->i_opflags & IOP_XATTR))
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = dentry;
> +	args.inode = d_backing_inode(dentry);
> +
> +	if (!(args.inode->i_opflags & IOP_XATTR))
>  		return -EOPNOTSUPP;
>  
> +	args.flags = XATTR_NOSECURITY;
> +
>  	list_for_each_entry_rcu(xattr, &evm_config_xattrnames, list) {
> -		error = __vfs_getxattr(dentry, inode, xattr->name, NULL, 0);
> +		args.name = xattr->name;
> +		error = __vfs_getxattr(&args);
>  		if (error < 0) {
>  			if (error == -ENODATA)
>  				continue;
> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> index 74dd46de01b6..23c3a2c468f7 100644
> --- a/security/selinux/hooks.c
> +++ b/security/selinux/hooks.c
> @@ -540,6 +540,8 @@ static int sb_finish_set_opts(struct super_block *sb)
>  	int rc = 0;
>  
>  	if (sbsec->behavior == SECURITY_FS_USE_XATTR) {
> +		struct xattr_gs_args args;
> +
>  		/* Make sure that the xattr handler exists and that no
>  		   error other than -ENODATA is returned by getxattr on
>  		   the root directory.  -ENODATA is ok, as this may be
> @@ -552,7 +554,12 @@ static int sb_finish_set_opts(struct super_block *sb)
>  			goto out;
>  		}
>  
> -		rc = __vfs_getxattr(root, root_inode, XATTR_NAME_SELINUX, NULL, 0);
> +		memset(&args, 0, sizeof(args));
> +		args.dentry = root;
> +		args.inode = root_inode;
> +		args.name = XATTR_NAME_SELINUX;
> +		args.flags = XATTR_NOSECURITY;
> +		rc = __vfs_getxattr(&args);
>  		if (rc < 0 && rc != -ENODATA) {
>  			if (rc == -EOPNOTSUPP)
>  				pr_warn("SELinux: (dev %s, type "
> @@ -1371,6 +1378,7 @@ static int inode_doinit_use_xattr(struct inode *inode, struct dentry *dentry,
>  	char *context;
>  	unsigned int len;
>  	int rc;
> +	struct xattr_gs_args args;
>  
>  	len = INITCONTEXTLEN;
>  	context = kmalloc(len + 1, GFP_NOFS);
> @@ -1378,12 +1386,21 @@ static int inode_doinit_use_xattr(struct inode *inode, struct dentry *dentry,
>  		return -ENOMEM;
>  
>  	context[len] = '\0';
> -	rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, context, len);
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = dentry;
> +	args.inode = inode;
> +	args.name = XATTR_NAME_SELINUX;
> +	args.buffer = context;
> +	args.size = len;
> +	args.flags = XATTR_NOSECURITY;
> +	rc = __vfs_getxattr(&args);
>  	if (rc == -ERANGE) {
>  		kfree(context);
>  
>  		/* Need a larger buffer.  Query for the right size. */
> -		rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, NULL, 0);
> +		args.buffer = NULL;
> +		args.size = 0;
> +		rc = __vfs_getxattr(&args);
>  		if (rc < 0)
>  			return rc;
>  
> @@ -1393,8 +1410,9 @@ static int inode_doinit_use_xattr(struct inode *inode, struct dentry *dentry,
>  			return -ENOMEM;
>  
>  		context[len] = '\0';
> -		rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX,
> -				    context, len);
> +		args.buffer = context;
> +		args.size = len;
> +		rc = __vfs_getxattr(&args);
>  	}
>  	if (rc < 0) {
>  		kfree(context);
> diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
> index 4c5e5a438f8b..91e585bd1823 100644
> --- a/security/smack/smack_lsm.c
> +++ b/security/smack/smack_lsm.c
> @@ -282,25 +282,32 @@ static struct smack_known *smk_fetch(const char *name, struct inode *ip,
>  					struct dentry *dp)
>  {
>  	int rc;
> -	char *buffer;
>  	struct smack_known *skp = NULL;
> +	struct xattr_gs_args args;
>  
>  	if (!(ip->i_opflags & IOP_XATTR))
>  		return ERR_PTR(-EOPNOTSUPP);
>  
> -	buffer = kzalloc(SMK_LONGLABEL, GFP_KERNEL);
> -	if (buffer == NULL)
> +	memset(&args, 0, sizeof(args));
> +	args.dentry = dp;
> +	args.inode = ip;
> +	args.name = name;
> +	args.buffer = kzalloc(SMK_LONGLABEL, GFP_KERNEL);
> +	args.size = SMK_LONGLABEL;
> +	args.flags = XATTR_NOSECURITY;
> +
> +	if (args.buffer == NULL)
>  		return ERR_PTR(-ENOMEM);
>  
> -	rc = __vfs_getxattr(dp, ip, name, buffer, SMK_LONGLABEL);
> +	rc = __vfs_getxattr(&args);
>  	if (rc < 0)
>  		skp = ERR_PTR(rc);
>  	else if (rc == 0)
>  		skp = NULL;
>  	else
> -		skp = smk_import_entry(buffer, rc);
> +		skp = smk_import_entry(args.buffer, rc);
>  
> -	kfree(buffer);
> +	kfree(args.buffer);
>  
>  	return skp;
>  }
> @@ -3424,6 +3431,8 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
>  		 * Transmuting directory
>  		 */
>  		if (S_ISDIR(inode->i_mode)) {
> +			struct xattr_gs_args args;
> +
>  			/*
>  			 * If this is a new directory and the label was
>  			 * transmuted when the inode was initialized
> @@ -3433,16 +3442,19 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
>  			 * If there is a transmute attribute on the
>  			 * directory mark the inode.
>  			 */
> +			memset(&args, 0, sizeof(args));
> +			args.dentry = dp;
> +			args.inode = inode;
> +			args.name = XATTR_NAME_SMACKTRANSMUTE;
> +			args.size = TRANS_TRUE_SIZE;
>  			if (isp->smk_flags & SMK_INODE_CHANGED) {
>  				isp->smk_flags &= ~SMK_INODE_CHANGED;
> -				rc = __vfs_setxattr(dp, inode,
> -					XATTR_NAME_SMACKTRANSMUTE,
> -					TRANS_TRUE, TRANS_TRUE_SIZE,
> -					0);
> +				args.value = TRANS_TRUE;
> +				rc = __vfs_setxattr(&args);
>  			} else {
> -				rc = __vfs_getxattr(dp, inode,
> -					XATTR_NAME_SMACKTRANSMUTE, trattr,
> -					TRANS_TRUE_SIZE);
> +				args.buffer = trattr;
> +				args.flags = XATTR_NOSECURITY;
> +				rc = __vfs_getxattr(&args);
>  				if (rc >= 0 && strncmp(trattr, TRANS_TRUE,
>  						       TRANS_TRUE_SIZE) != 0)
>  					rc = -EINVAL;
> -- 
> 2.23.0.187.g17f5b7556c-goog
> 


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^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
  2019-08-27 15:05 [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr Mark Salyzyn via Linux-f2fs-devel
                   ` (2 preceding siblings ...)
  2019-08-27 21:35 ` Darrick J. Wong
@ 2019-08-28 14:24 ` Christoph Hellwig
  2019-08-28 14:40   ` Mark Salyzyn via Linux-f2fs-devel
  3 siblings, 1 reply; 7+ messages in thread
From: Christoph Hellwig @ 2019-08-28 14:24 UTC (permalink / raw)
  To: Mark Salyzyn
  Cc: Latchesar Ionkov, Hugh Dickins, Mike Marshall, James Morris,
	devel, Eric Van Hensbergen, Joel Becker, Anna Schumaker,
	Trond Myklebust, Mathieu Malaterre, Greg Kroah-Hartman,
	linux-kernel, Jan Kara, Casey Schaufler, Andrew Morton,
	Dave Kleikamp, linux-doc, Jeff Layton, Mimi Zohar, linux-cifs,
	Paul Moore, Darrick J. Wong, Eric Sandeen, kernel-team, selinux,
	Brian Foster, reiserfs-devel, Tejun Heo, Jaegeuk Kim,
	Theodore Ts'o, Miklos Szeredi, linux-f2fs-devel,
	Benjamin Coddington, linux-integrity, Martin Brandenburg,
	Chris Mason, linux-mtd, linux-afs, Jonathan Corbet,
	Vyacheslav Dubeyko, Allison Henderson, Ilya Dryomov, linux-ext4,
	Stephen Smalley, Serge Hallyn, Eric Paris, ceph-devel, linux-nfs,
	linux-mm, samba-technical, linux-xfs, Bob Peterson,
	linux-fsdevel, linux-erofs, David S. Miller, ocfs2-devel,
	jfs-discussion, Jan Kara, Eric Biggers, Dominique Martinet,
	Adrian Hunter, David Howells, Joseph Qi, Andreas Dilger, devel,
	J. Bruce Fields, Andreas Gruenbacher, Sage Weil,
	Richard Weinberger, Mark Fasheh, cluster-devel, Steve French,
	v9fs-developer, Bharath Vedartham, Jann Horn, ecryptfs,
	Josef Bacik, Dave Chinner, David Sterba, Artem Bityutskiy,
	netdev, linux-unionfs, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

On Tue, Aug 27, 2019 at 08:05:15AM -0700, Mark Salyzyn wrote:
> Replace arguments for get and set xattr methods, and __vfs_getxattr
> and __vfs_setaxtr functions with a reference to the following now
> common argument structure:

Yikes.  That looks like a mess.  Why can't we pass a kernel-only
flag in the existing flags field for ₋>set and add a flags field
to ->get?  Passing methods by structure always tends to be a mess.


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^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
  2019-08-28 14:24 ` Christoph Hellwig
@ 2019-08-28 14:40   ` Mark Salyzyn via Linux-f2fs-devel
  2019-08-30  1:24     ` Mike Marshall
  0 siblings, 1 reply; 7+ messages in thread
From: Mark Salyzyn via Linux-f2fs-devel @ 2019-08-28 14:40 UTC (permalink / raw)
  To: Christoph Hellwig
  Cc: Latchesar Ionkov, Hugh Dickins, Mike Marshall, James Morris,
	devel, Eric Van Hensbergen, Joel Becker, Anna Schumaker,
	Trond Myklebust, Mathieu Malaterre, Greg Kroah-Hartman,
	linux-kernel, Jan Kara, Casey Schaufler, Andrew Morton,
	Dave Kleikamp, linux-doc, Jeff Layton, Mimi Zohar, linux-cifs,
	Paul Moore, Darrick J. Wong, Eric Sandeen, kernel-team, selinux,
	Brian Foster, reiserfs-devel, Tejun Heo, Jaegeuk Kim,
	Theodore Ts'o, Miklos Szeredi, linux-f2fs-devel,
	Benjamin Coddington, linux-integrity, Martin Brandenburg,
	Chris Mason, linux-mtd, linux-afs, Jonathan Corbet,
	Vyacheslav Dubeyko, Allison Henderson, Ilya Dryomov, linux-ext4,
	Stephen Smalley, Serge Hallyn, Eric Paris, ceph-devel, linux-nfs,
	linux-mm, samba-technical, linux-xfs, Bob Peterson,
	linux-fsdevel, linux-erofs, David S. Miller, ocfs2-devel,
	jfs-discussion, Jan Kara, Eric Biggers, Dominique Martinet,
	Adrian Hunter, David Howells, Joseph Qi, Andreas Dilger, devel,
	J. Bruce Fields, Andreas Gruenbacher, Sage Weil,
	Richard Weinberger, Mark Fasheh, cluster-devel, Steve French,
	v9fs-developer, Bharath Vedartham, Jann Horn, ecryptfs,
	Josef Bacik, Dave Chinner, David Sterba, Artem Bityutskiy,
	netdev, linux-unionfs, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

On 8/28/19 7:24 AM, Christoph Hellwig wrote:
> On Tue, Aug 27, 2019 at 08:05:15AM -0700, Mark Salyzyn wrote:
>> Replace arguments for get and set xattr methods, and __vfs_getxattr
>> and __vfs_setaxtr functions with a reference to the following now
>> common argument structure:
> Yikes.  That looks like a mess.  Why can't we pass a kernel-only
> flag in the existing flags field for ₋>set and add a flags field
> to ->get?  Passing methods by structure always tends to be a mess.

This was a response to GregKH@ criticism, an earlier patch set just 
added a flag as you stated to get method, until complaints of an 
excessively long argument list and fragility to add or change more 
arguments.

So many ways have been tried to skin this cat ... the risk was taken to 
please some, and we now have hundreds of stakeholders, when the first 
patch set was less than a dozen. A recipe for failure?

-- Mark



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^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr
  2019-08-28 14:40   ` Mark Salyzyn via Linux-f2fs-devel
@ 2019-08-30  1:24     ` Mike Marshall
  0 siblings, 0 replies; 7+ messages in thread
From: Mike Marshall @ 2019-08-30  1:24 UTC (permalink / raw)
  To: Mark Salyzyn
  Cc: Latchesar Ionkov, Hugh Dickins, James Morris, Christoph Hellwig,
	devel, Eric Van Hensbergen, Joel Becker, Anna Schumaker,
	Trond Myklebust, Mathieu Malaterre, Greg Kroah-Hartman, LKML,
	Jan Kara, Casey Schaufler, Andrew Morton, Dave Kleikamp,
	linux-doc, Jeff Layton, Mimi Zohar, linux-cifs, Paul Moore,
	Darrick J. Wong, Eric Sandeen, kernel-team, selinux,
	Brian Foster, reiserfs-devel, Tejun Heo, Jaegeuk Kim,
	Theodore Ts'o, Miklos Szeredi, Linux F2FS DEV, Mailing List,
	Benjamin Coddington, linux-integrity, Martin Brandenburg,
	Chris Mason, linux-mtd, linux-afs, Jonathan Corbet,
	Vyacheslav Dubeyko, Allison Henderson, Ilya Dryomov,
	Ext4 Developers List, Stephen Smalley, Serge Hallyn, Eric Paris,
	ceph-devel, Linux NFS Mailing List, linux-mm, samba-technical,
	linux-xfs, Bob Peterson, linux-fsdevel, linux-erofs,
	David S. Miller, ocfs2-devel, jfs-discussion, Jan Kara,
	Eric Biggers, Dominique Martinet, Adrian Hunter, David Howells,
	Joseph Qi, Andreas Dilger, devel, J. Bruce Fields,
	Andreas Gruenbacher, Sage Weil, Richard Weinberger, Mark Fasheh,
	cluster-devel, Steve French, V9FS Developers, Bharath Vedartham,
	Jann Horn, ecryptfs, Josef Bacik, Dave Chinner, David Sterba,
	Artem Bityutskiy, netdev, linux-unionfs, stable, Tyler Hicks,
	linux-security-module, Phillip Lougher, David Woodhouse,
	linux-btrfs, Alexander Viro

I added this patch series on top of Linux 5.3-rc6 and ran xfstests
on orangefs with no regressions.

Acked-by: Mike Marshall <hubcap@omnibond.com>

-Mike

On Wed, Aug 28, 2019 at 10:40 AM Mark Salyzyn <salyzyn@android.com> wrote:
>
> On 8/28/19 7:24 AM, Christoph Hellwig wrote:
> > On Tue, Aug 27, 2019 at 08:05:15AM -0700, Mark Salyzyn wrote:
> >> Replace arguments for get and set xattr methods, and __vfs_getxattr
> >> and __vfs_setaxtr functions with a reference to the following now
> >> common argument structure:
> > Yikes.  That looks like a mess.  Why can't we pass a kernel-only
> > flag in the existing flags field for ₋>set and add a flags field
> > to ->get?  Passing methods by structure always tends to be a mess.
>
> This was a response to GregKH@ criticism, an earlier patch set just
> added a flag as you stated to get method, until complaints of an
> excessively long argument list and fragility to add or change more
> arguments.
>
> So many ways have been tried to skin this cat ... the risk was taken to
> please some, and we now have hundreds of stakeholders, when the first
> patch set was less than a dozen. A recipe for failure?
>
> -- Mark
>


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

^ permalink raw reply	[flat|nested] 7+ messages in thread

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Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-27 15:05 [f2fs-dev] [PATCH v8] Add flags option to get xattr method paired to __vfs_getxattr Mark Salyzyn via Linux-f2fs-devel
2019-08-27 15:49 ` Jeff Layton
2019-08-27 17:07 ` David Sterba
2019-08-27 21:35 ` Darrick J. Wong
2019-08-28 14:24 ` Christoph Hellwig
2019-08-28 14:40   ` Mark Salyzyn via Linux-f2fs-devel
2019-08-30  1:24     ` Mike Marshall

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