Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs xattr cleanups from Al Viro.

* 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  f2fs: xattr simplifications
  squashfs: xattr simplifications
  9p: xattr simplifications
  xattr handlers: Pass handler to operations instead of flags
  jffs2: Add missing capability check for listing trusted xattrs
  hfsplus: Remove unused xattr handler list operations
  ubifs: Remove unused security xattr handler
  vfs: Fix the posix_acl_xattr_list return value
  vfs: Check attribute names in posix acl xattr handers

fs/9p/Makefile

@@ -10,10 +10,7 @@ obj-$(CONFIG_9P_FS) := 9p.o
 	vfs_dentry.o \
 	v9fs.o \
 	fid.o  \
-	xattr.o \
-	xattr_user.o \
-	xattr_trusted.o
+	xattr.o
 
 9p-$(CONFIG_9P_FSCACHE) += cache.o
 9p-$(CONFIG_9P_FS_POSIX_ACL) += acl.o
-9p-$(CONFIG_9P_FS_SECURITY) += xattr_security.o

fs/9p/acl.c

@@ -212,26 +212,9 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep,
 	return 0;
 }
 
-static int v9fs_remote_get_acl(struct dentry *dentry, const char *name,
-			       void *buffer, size_t size, int type)
-{
-	char *full_name;
-
-	switch (type) {
-	case ACL_TYPE_ACCESS:
-		full_name =  POSIX_ACL_XATTR_ACCESS;
-		break;
-	case ACL_TYPE_DEFAULT:
-		full_name = POSIX_ACL_XATTR_DEFAULT;
-		break;
-	default:
-		BUG();
-	}
-	return v9fs_xattr_get(dentry, full_name, buffer, size);
-}
-
-static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
-			      void *buffer, size_t size, int type)
+static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
+			      struct dentry *dentry, const char *name,
+			      void *buffer, size_t size)
 {
 	struct v9fs_session_info *v9ses;
 	struct posix_acl *acl;
@@ -245,9 +228,9 @@ static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
 	 * We allow set/get/list of acl when access=client is not specified
 	 */
 	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
-		return v9fs_remote_get_acl(dentry, name, buffer, size, type);
+		return v9fs_xattr_get(dentry, handler->prefix, buffer, size);
 
-	acl = v9fs_get_cached_acl(d_inode(dentry), type);
+	acl = v9fs_get_cached_acl(d_inode(dentry), handler->flags);
 	if (IS_ERR(acl))
 		return PTR_ERR(acl);
 	if (acl == NULL)
@@ -258,29 +241,9 @@ static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
 	return error;
 }
 
-static int v9fs_remote_set_acl(struct dentry *dentry, const char *name,
-			      const void *value, size_t size,
-			      int flags, int type)
-{
-	char *full_name;
-
-	switch (type) {
-	case ACL_TYPE_ACCESS:
-		full_name =  POSIX_ACL_XATTR_ACCESS;
-		break;
-	case ACL_TYPE_DEFAULT:
-		full_name = POSIX_ACL_XATTR_DEFAULT;
-		break;
-	default:
-		BUG();
-	}
-	return v9fs_xattr_set(dentry, full_name, value, size, flags);
-}
-
-
-static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
-			      const void *value, size_t size,
-			      int flags, int type)
+static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
+			      struct dentry *dentry, const char *name,
+			      const void *value, size_t size, int flags)
 {
 	int retval;
 	struct posix_acl *acl;
@@ -296,8 +259,8 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
 	 * xattr value. We leave it to the server to validate
 	 */
 	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
-		return v9fs_remote_set_acl(dentry, name,
-					   value, size, flags, type);
+		return v9fs_xattr_set(dentry, handler->prefix, value, size,
+				      flags);
 
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
@@ -316,9 +279,8 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
 	} else
 		acl = NULL;
 
-	switch (type) {
+	switch (handler->flags) {
 	case ACL_TYPE_ACCESS:
-		name = POSIX_ACL_XATTR_ACCESS;
 		if (acl) {
 			umode_t mode = inode->i_mode;
 			retval = posix_acl_equiv_mode(acl, &mode);
@@ -349,7 +311,6 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
 		}
 		break;
 	case ACL_TYPE_DEFAULT:
-		name = POSIX_ACL_XATTR_DEFAULT;
 		if (!S_ISDIR(inode->i_mode)) {
 			retval = acl ? -EINVAL : 0;
 			goto err_out;
@@ -358,9 +319,9 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
 	default:
 		BUG();
 	}
-	retval = v9fs_xattr_set(dentry, name, value, size, flags);
+	retval = v9fs_xattr_set(dentry, handler->prefix, value, size, flags);
 	if (!retval)
-		set_cached_acl(inode, type, acl);
+		set_cached_acl(inode, handler->flags, acl);
 err_out:
 	posix_acl_release(acl);
 	return retval;

fs/9p/xattr.c

@@ -137,6 +137,48 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 	return v9fs_xattr_get(dentry, NULL, buffer, buffer_size);
 }
 
+static int v9fs_xattr_handler_get(const struct xattr_handler *handler,
+				  struct dentry *dentry, const char *name,
+				  void *buffer, size_t size)
+{
+	const char *full_name = xattr_full_name(handler, name);
+
+	if (strcmp(name, "") == 0)
+		return -EINVAL;
+	return v9fs_xattr_get(dentry, full_name, buffer, size);
+}
+
+static int v9fs_xattr_handler_set(const struct xattr_handler *handler,
+				  struct dentry *dentry, const char *name,
+				  const void *value, size_t size, int flags)
+{
+	const char *full_name = xattr_full_name(handler, name);
+
+	if (strcmp(name, "") == 0)
+		return -EINVAL;
+	return v9fs_xattr_set(dentry, full_name, value, size, flags);
+}
+
+static struct xattr_handler v9fs_xattr_user_handler = {
+	.prefix	= XATTR_USER_PREFIX,
+	.get	= v9fs_xattr_handler_get,
+	.set	= v9fs_xattr_handler_set,
+};
+
+static struct xattr_handler v9fs_xattr_trusted_handler = {
+	.prefix	= XATTR_TRUSTED_PREFIX,
+	.get	= v9fs_xattr_handler_get,
+	.set	= v9fs_xattr_handler_set,
+};
+
+#ifdef CONFIG_9P_FS_SECURITY
+static struct xattr_handler v9fs_xattr_security_handler = {
+	.prefix	= XATTR_SECURITY_PREFIX,
+	.get	= v9fs_xattr_handler_get,
+	.set	= v9fs_xattr_handler_set,
+};
+#endif
+
 const struct xattr_handler *v9fs_xattr_handlers[] = {
 	&v9fs_xattr_user_handler,
 	&v9fs_xattr_trusted_handler,

fs/9p/xattr.h

@@ -19,9 +19,6 @@
 #include <net/9p/client.h>
 
 extern const struct xattr_handler *v9fs_xattr_handlers[];
-extern struct xattr_handler v9fs_xattr_user_handler;
-extern struct xattr_handler v9fs_xattr_trusted_handler;
-extern struct xattr_handler v9fs_xattr_security_handler;
 extern const struct xattr_handler v9fs_xattr_acl_access_handler;
 extern const struct xattr_handler v9fs_xattr_acl_default_handler;
 

fs/9p/xattr_security.c

@@ -1,80 +0,0 @@
-/*
- * Copyright IBM Corporation, 2010
- * Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- */
-
-
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include "xattr.h"
-
-static int v9fs_xattr_security_get(struct dentry *dentry, const char *name,
-			void *buffer, size_t size, int type)
-{
-	int retval;
-	char *full_name;
-	size_t name_len;
-	size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	if (strcmp(name, "") == 0)
-		return -EINVAL;
-
-	name_len = strlen(name);
-	full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
-	if (!full_name)
-		return -ENOMEM;
-	memcpy(full_name, XATTR_SECURITY_PREFIX, prefix_len);
-	memcpy(full_name+prefix_len, name, name_len);
-	full_name[prefix_len + name_len] = '\0';
-
-	retval = v9fs_xattr_get(dentry, full_name, buffer, size);
-	kfree(full_name);
-	return retval;
-}
-
-static int v9fs_xattr_security_set(struct dentry *dentry, const char *name,
-			const void *value, size_t size, int flags, int type)
-{
-	int retval;
-	char *full_name;
-	size_t name_len;
-	size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	if (strcmp(name, "") == 0)
-		return -EINVAL;
-
-	name_len = strlen(name);
-	full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
-	if (!full_name)
-		return -ENOMEM;
-	memcpy(full_name, XATTR_SECURITY_PREFIX, prefix_len);
-	memcpy(full_name + prefix_len, name, name_len);
-	full_name[prefix_len + name_len] = '\0';
-
-	retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
-	kfree(full_name);
-	return retval;
-}
-
-struct xattr_handler v9fs_xattr_security_handler = {
-	.prefix	= XATTR_SECURITY_PREFIX,
-	.get	= v9fs_xattr_security_get,
-	.set	= v9fs_xattr_security_set,
-};

fs/9p/xattr_trusted.c

@@ -1,80 +0,0 @@
-/*
- * Copyright IBM Corporation, 2010
- * Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- */
-
-
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include "xattr.h"
-
-static int v9fs_xattr_trusted_get(struct dentry *dentry, const char *name,
-			void *buffer, size_t size, int type)
-{
-	int retval;
-	char *full_name;
-	size_t name_len;
-	size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	if (strcmp(name, "") == 0)
-		return -EINVAL;
-
-	name_len = strlen(name);
-	full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
-	if (!full_name)
-		return -ENOMEM;
-	memcpy(full_name, XATTR_TRUSTED_PREFIX, prefix_len);
-	memcpy(full_name+prefix_len, name, name_len);
-	full_name[prefix_len + name_len] = '\0';
-
-	retval = v9fs_xattr_get(dentry, full_name, buffer, size);
-	kfree(full_name);
-	return retval;
-}
-
-static int v9fs_xattr_trusted_set(struct dentry *dentry, const char *name,
-			const void *value, size_t size, int flags, int type)
-{
-	int retval;
-	char *full_name;
-	size_t name_len;
-	size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	if (strcmp(name, "") == 0)
-		return -EINVAL;
-
-	name_len = strlen(name);
-	full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
-	if (!full_name)
-		return -ENOMEM;
-	memcpy(full_name, XATTR_TRUSTED_PREFIX, prefix_len);
-	memcpy(full_name + prefix_len, name, name_len);
-	full_name[prefix_len + name_len] = '\0';
-
-	retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
-	kfree(full_name);
-	return retval;
-}
-
-struct xattr_handler v9fs_xattr_trusted_handler = {
-	.prefix	= XATTR_TRUSTED_PREFIX,
-	.get	= v9fs_xattr_trusted_get,
-	.set	= v9fs_xattr_trusted_set,
-};

fs/9p/xattr_user.c

@@ -1,80 +0,0 @@
-/*
- * Copyright IBM Corporation, 2010
- * Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- */
-
-
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include "xattr.h"
-
-static int v9fs_xattr_user_get(struct dentry *dentry, const char *name,
-			void *buffer, size_t size, int type)
-{
-	int retval;
-	char *full_name;
-	size_t name_len;
-	size_t prefix_len = XATTR_USER_PREFIX_LEN;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	if (strcmp(name, "") == 0)
-		return -EINVAL;
-
-	name_len = strlen(name);
-	full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
-	if (!full_name)
-		return -ENOMEM;
-	memcpy(full_name, XATTR_USER_PREFIX, prefix_len);
-	memcpy(full_name+prefix_len, name, name_len);
-	full_name[prefix_len + name_len] = '\0';
-
-	retval = v9fs_xattr_get(dentry, full_name, buffer, size);
-	kfree(full_name);
-	return retval;
-}
-
-static int v9fs_xattr_user_set(struct dentry *dentry, const char *name,
-			const void *value, size_t size, int flags, int type)
-{
-	int retval;
-	char *full_name;
-	size_t name_len;
-	size_t prefix_len = XATTR_USER_PREFIX_LEN;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	if (strcmp(name, "") == 0)
-		return -EINVAL;
-
-	name_len = strlen(name);
-	full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
-	if (!full_name)
-		return -ENOMEM;
-	memcpy(full_name, XATTR_USER_PREFIX, prefix_len);
-	memcpy(full_name + prefix_len, name, name_len);
-	full_name[prefix_len + name_len] = '\0';
-
-	retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
-	kfree(full_name);
-	return retval;
-}
-
-struct xattr_handler v9fs_xattr_user_handler = {
-	.prefix	= XATTR_USER_PREFIX,
-	.get	= v9fs_xattr_user_get,
-	.set	= v9fs_xattr_user_set,
-};

fs/ext2/xattr.c

@@ -293,10 +293,9 @@ bad_block:	ext2_error(inode->i_sb, "ext2_xattr_list",
 			ext2_xattr_handler(entry->e_name_index);
 
 		if (handler) {
-			size_t size = handler->list(dentry, buffer, rest,
-						    entry->e_name,
-						    entry->e_name_len,
-						    handler->flags);
+			size_t size = handler->list(handler, dentry, buffer,
+						    rest, entry->e_name,
+						    entry->e_name_len);
 			if (buffer) {
 				if (size > rest) {
 					error = -ERANGE;

fs/ext2/xattr_security.c

@@ -8,8 +8,9 @@
 #include "xattr.h"
 
 static size_t
-ext2_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
-			 const char *name, size_t name_len, int type)
+ext2_xattr_security_list(const struct xattr_handler *handler,
+			 struct dentry *dentry, char *list, size_t list_size,
+			 const char *name, size_t name_len)
 {
 	const int prefix_len = XATTR_SECURITY_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -23,8 +24,9 @@ ext2_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
 }
 
 static int
-ext2_xattr_security_get(struct dentry *dentry, const char *name,
-		       void *buffer, size_t size, int type)
+ext2_xattr_security_get(const struct xattr_handler *handler,
+			struct dentry *dentry, const char *name,
+			void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -33,8 +35,9 @@ ext2_xattr_security_get(struct dentry *dentry, const char *name,
 }
 
 static int
-ext2_xattr_security_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+ext2_xattr_security_set(const struct xattr_handler *handler,
+			struct dentry *dentry, const char *name,
+			const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;

fs/ext2/xattr_trusted.c

@@ -9,8 +9,9 @@
 #include "xattr.h"
 
 static size_t
-ext2_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
-		const char *name, size_t name_len, int type)
+ext2_xattr_trusted_list(const struct xattr_handler *handler,
+			struct dentry *dentry, char *list, size_t list_size,
+			const char *name, size_t name_len)
 {
 	const int prefix_len = XATTR_TRUSTED_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -27,8 +28,9 @@ ext2_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
 }
 
 static int
-ext2_xattr_trusted_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+ext2_xattr_trusted_get(const struct xattr_handler *handler,
+		       struct dentry *dentry, const char *name,
+		       void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -37,8 +39,9 @@ ext2_xattr_trusted_get(struct dentry *dentry, const char *name,
 }
 
 static int
-ext2_xattr_trusted_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+ext2_xattr_trusted_set(const struct xattr_handler *handler,
+		       struct dentry *dentry, const char *name,
+		       const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;

fs/ext2/xattr_user.c

@@ -11,8 +11,9 @@
 #include "xattr.h"
 
 static size_t
-ext2_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
-		const char *name, size_t name_len, int type)
+ext2_xattr_user_list(const struct xattr_handler *handler,
+		     struct dentry *dentry, char *list, size_t list_size,
+		     const char *name, size_t name_len)
 {
 	const size_t prefix_len = XATTR_USER_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -29,8 +30,9 @@ ext2_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
 }
 
 static int
-ext2_xattr_user_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+ext2_xattr_user_get(const struct xattr_handler *handler,
+		    struct dentry *dentry, const char *name,
+		    void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -41,8 +43,9 @@ ext2_xattr_user_get(struct dentry *dentry, const char *name,
 }
 
 static int
-ext2_xattr_user_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+ext2_xattr_user_set(const struct xattr_handler *handler,
+		    struct dentry *dentry, const char *name,
+		    const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;

fs/ext4/xattr.c

@@ -405,10 +405,9 @@ ext4_xattr_list_entries(struct dentry *dentry, struct ext4_xattr_entry *entry,
 			ext4_xattr_handler(entry->e_name_index);
 
 		if (handler) {
-			size_t size = handler->list(dentry, buffer, rest,
-						    entry->e_name,
-						    entry->e_name_len,
-						    handler->flags);
+			size_t size = handler->list(handler, dentry, buffer,
+						    rest, entry->e_name,
+						    entry->e_name_len);
 			if (buffer) {
 				if (size > rest)
 					return -ERANGE;

fs/ext4/xattr_security.c

@@ -12,8 +12,9 @@
 #include "xattr.h"
 
 static size_t
-ext4_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
-		const char *name, size_t name_len, int type)
+ext4_xattr_security_list(const struct xattr_handler *handler,
+			 struct dentry *dentry, char *list, size_t list_size,
+			 const char *name, size_t name_len)
 {
 	const size_t prefix_len = sizeof(XATTR_SECURITY_PREFIX)-1;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -28,8 +29,9 @@ ext4_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
 }
 
 static int
-ext4_xattr_security_get(struct dentry *dentry, const char *name,
-		       void *buffer, size_t size, int type)
+ext4_xattr_security_get(const struct xattr_handler *handler,
+			struct dentry *dentry, const char *name,
+			void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -38,8 +40,9 @@ ext4_xattr_security_get(struct dentry *dentry, const char *name,
 }
 
 static int
-ext4_xattr_security_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+ext4_xattr_security_set(const struct xattr_handler *handler,
+			struct dentry *dentry, const char *name,
+			const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;

fs/ext4/xattr_trusted.c

@@ -13,8 +13,9 @@
 #include "xattr.h"
 
 static size_t
-ext4_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
-		const char *name, size_t name_len, int type)
+ext4_xattr_trusted_list(const struct xattr_handler *handler,
+			struct dentry *dentry, char *list, size_t list_size,
+			const char *name, size_t name_len)
 {
 	const size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -31,8 +32,9 @@ ext4_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
 }
 
 static int
-ext4_xattr_trusted_get(struct dentry *dentry, const char *name, void *buffer,
-		size_t size, int type)
+ext4_xattr_trusted_get(const struct xattr_handler *handler,
+		       struct dentry *dentry, const char *name, void *buffer,
+		       size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -41,8 +43,9 @@ ext4_xattr_trusted_get(struct dentry *dentry, const char *name, void *buffer,
 }
 
 static int
-ext4_xattr_trusted_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+ext4_xattr_trusted_set(const struct xattr_handler *handler,
+		       struct dentry *dentry, const char *name,
+		       const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;

fs/ext4/xattr_user.c

@@ -12,8 +12,9 @@
 #include "xattr.h"
 
 static size_t
-ext4_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
-		     const char *name, size_t name_len, int type)
+ext4_xattr_user_list(const struct xattr_handler *handler,
+		     struct dentry *dentry, char *list, size_t list_size,
+		     const char *name, size_t name_len)
 {
 	const size_t prefix_len = XATTR_USER_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -30,8 +31,9 @@ ext4_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
 }
 
 static int
-ext4_xattr_user_get(struct dentry *dentry, const char *name,
-		    void *buffer, size_t size, int type)
+ext4_xattr_user_get(const struct xattr_handler *handler,
+		    struct dentry *dentry, const char *name,
+		    void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -42,8 +44,9 @@ ext4_xattr_user_get(struct dentry *dentry, const char *name,
 }
 
 static int
-ext4_xattr_user_set(struct dentry *dentry, const char *name,
-		    const void *value, size_t size, int flags, int type)
+ext4_xattr_user_set(const struct xattr_handler *handler,
+		    struct dentry *dentry, const char *name,
+		    const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;

fs/f2fs/xattr.c

@@ -25,49 +25,45 @@
 #include "f2fs.h"
 #include "xattr.h"
 
-static size_t f2fs_xattr_generic_list(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t len, int type)
+static size_t f2fs_xattr_generic_list(const struct xattr_handler *handler,
+		struct dentry *dentry, char *list, size_t list_size,
+		const char *name, size_t len)
 {
 	struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
-	int total_len, prefix_len = 0;
-	const char *prefix = NULL;
+	int total_len, prefix_len;
 
-	switch (type) {
+	switch (handler->flags) {
 	case F2FS_XATTR_INDEX_USER:
 		if (!test_opt(sbi, XATTR_USER))
 			return -EOPNOTSUPP;
-		prefix = XATTR_USER_PREFIX;
-		prefix_len = XATTR_USER_PREFIX_LEN;
 		break;
 	case F2FS_XATTR_INDEX_TRUSTED:
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
-		prefix = XATTR_TRUSTED_PREFIX;
-		prefix_len = XATTR_TRUSTED_PREFIX_LEN;
 		break;
 	case F2FS_XATTR_INDEX_SECURITY:
-		prefix = XATTR_SECURITY_PREFIX;
-		prefix_len = XATTR_SECURITY_PREFIX_LEN;
 		break;
 	default:
 		return -EINVAL;
 	}
 
+	prefix_len = strlen(handler->prefix);
 	total_len = prefix_len + len + 1;
 	if (list && total_len <= list_size) {
-		memcpy(list, prefix, prefix_len);
+		memcpy(list, handler->prefix, prefix_len);
 		memcpy(list + prefix_len, name, len);
 		list[prefix_len + len] = '\0';
 	}
 	return total_len;
 }
 
-static int f2fs_xattr_generic_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
+		struct dentry *dentry, const char *name, void *buffer,
+		size_t size)
 {
 	struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
 
-	switch (type) {
+	switch (handler->flags) {
 	case F2FS_XATTR_INDEX_USER:
 		if (!test_opt(sbi, XATTR_USER))
 			return -EOPNOTSUPP;
@@ -83,15 +79,17 @@ static int f2fs_xattr_generic_get(struct dentry *dentry, const char *name,
 	}
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
-	return f2fs_getxattr(d_inode(dentry), type, name, buffer, size, NULL);
+	return f2fs_getxattr(d_inode(dentry), handler->flags, name,
+			     buffer, size, NULL);
 }
 
-static int f2fs_xattr_generic_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
+		struct dentry *dentry, const char *name, const void *value,
+		size_t size, int flags)
 {
 	struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
 
-	switch (type) {
+	switch (handler->flags) {
 	case F2FS_XATTR_INDEX_USER:
 		if (!test_opt(sbi, XATTR_USER))
 			return -EOPNOTSUPP;
@@ -108,27 +106,26 @@ static int f2fs_xattr_generic_set(struct dentry *dentry, const char *name,
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
 
-	return f2fs_setxattr(d_inode(dentry), type, name,
+	return f2fs_setxattr(d_inode(dentry), handler->flags, name,
 					value, size, NULL, flags);
 }
 
-static size_t f2fs_xattr_advise_list(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t len, int type)
+static size_t f2fs_xattr_advise_list(const struct xattr_handler *handler,
+		struct dentry *dentry, char *list, size_t list_size,
+		const char *name, size_t len)
 {
 	const char *xname = F2FS_SYSTEM_ADVISE_PREFIX;
 	size_t size;
 
-	if (type != F2FS_XATTR_INDEX_ADVISE)
-		return 0;
-
 	size = strlen(xname) + 1;
 	if (list && size <= list_size)
 		memcpy(list, xname, size);
 	return size;
 }
 
-static int f2fs_xattr_advise_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
+		struct dentry *dentry, const char *name, void *buffer,
+		size_t size)
 {
 	struct inode *inode = d_inode(dentry);
 
@@ -140,8 +137,9 @@ static int f2fs_xattr_advise_get(struct dentry *dentry, const char *name,
 	return sizeof(char);
 }
 
-static int f2fs_xattr_advise_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
+		struct dentry *dentry, const char *name, const void *value,
+		size_t size, int flags)
 {
 	struct inode *inode = d_inode(dentry);
 
@@ -462,8 +460,8 @@ ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 		if (!handler)
 			continue;
 
-		size = handler->list(dentry, buffer, rest, entry->e_name,
-				entry->e_name_len, handler->flags);
+		size = handler->list(handler, dentry, buffer, rest,
+				     entry->e_name, entry->e_name_len);
 		if (buffer && size > rest) {
 			error = -ERANGE;
 			goto cleanup;

fs/gfs2/xattr.c

@@ -583,11 +583,13 @@ out:
  *
  * Returns: actual size of data on success, -errno on error
  */
-static int gfs2_xattr_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+static int gfs2_xattr_get(const struct xattr_handler *handler,
+			  struct dentry *dentry, const char *name,
+			  void *buffer, size_t size)
 {
 	struct gfs2_inode *ip = GFS2_I(d_inode(dentry));
 	struct gfs2_ea_location el;
+	int type = handler->flags;
 	int error;
 
 	if (!ip->i_eattr)
@@ -1227,11 +1229,12 @@ int __gfs2_xattr_set(struct inode *inode, const char *name,
 	return error;
 }
 
-static int gfs2_xattr_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+static int gfs2_xattr_set(const struct xattr_handler *handler,
+			  struct dentry *dentry, const char *name,
+			  const void *value, size_t size, int flags)
 {
 	return __gfs2_xattr_set(d_inode(dentry), name, value,
-				size, flags, type);
+				size, flags, handler->flags);
 }
 
 

fs/hfsplus/xattr.c

@@ -849,8 +849,9 @@ end_removexattr:
 	return err;
 }
 
-static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name,
-					void *buffer, size_t size, int type)
+static int hfsplus_osx_getxattr(const struct xattr_handler *handler,
+				struct dentry *dentry, const char *name,
+				void *buffer, size_t size)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -871,8 +872,9 @@ static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name,
 	return __hfsplus_getxattr(d_inode(dentry), name, buffer, size);
 }
 
-static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int hfsplus_osx_setxattr(const struct xattr_handler *handler,
+				struct dentry *dentry, const char *name,
+				const void *buffer, size_t size, int flags)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -893,19 +895,8 @@ static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name,
 	return __hfsplus_setxattr(d_inode(dentry), name, buffer, size, flags);
 }
 
-static size_t hfsplus_osx_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
-{
-	/*
-	 * This method is not used.
-	 * It is used hfsplus_listxattr() instead of generic_listxattr().
-	 */
-	return -EOPNOTSUPP;
-}
-
 const struct xattr_handler hfsplus_xattr_osx_handler = {
 	.prefix	= XATTR_MAC_OSX_PREFIX,
-	.list	= hfsplus_osx_listxattr,
 	.get	= hfsplus_osx_getxattr,
 	.set	= hfsplus_osx_setxattr,
 };

fs/hfsplus/xattr_security.c

@@ -13,32 +13,24 @@
 #include "xattr.h"
 #include "acl.h"
 
-static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
-					void *buffer, size_t size, int type)
+static int hfsplus_security_getxattr(const struct xattr_handler *handler,
+				     struct dentry *dentry, const char *name,
+				     void *buffer, size_t size)
 {
 	return hfsplus_getxattr(dentry, name, buffer, size,
 				XATTR_SECURITY_PREFIX,
 				XATTR_SECURITY_PREFIX_LEN);
 }
 
-static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int hfsplus_security_setxattr(const struct xattr_handler *handler,
+				     struct dentry *dentry, const char *name,
+				     const void *buffer, size_t size, int flags)
 {
 	return hfsplus_setxattr(dentry, name, buffer, size, flags,
 				XATTR_SECURITY_PREFIX,
 				XATTR_SECURITY_PREFIX_LEN);
 }
 
-static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
-{
-	/*
-	 * This method is not used.
-	 * It is used hfsplus_listxattr() instead of generic_listxattr().
-	 */
-	return -EOPNOTSUPP;
-}
-
 static int hfsplus_initxattrs(struct inode *inode,
 				const struct xattr *xattr_array,
 				void *fs_info)
@@ -92,7 +84,6 @@ int hfsplus_init_inode_security(struct inode *inode,
 
 const struct xattr_handler hfsplus_xattr_security_handler = {
 	.prefix	= XATTR_SECURITY_PREFIX,
-	.list	= hfsplus_security_listxattr,
 	.get	= hfsplus_security_getxattr,
 	.set	= hfsplus_security_setxattr,
 };

fs/hfsplus/xattr_trusted.c

@@ -11,34 +11,25 @@
 #include "hfsplus_fs.h"
 #include "xattr.h"
 
-static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name,
-					void *buffer, size_t size, int type)
+static int hfsplus_trusted_getxattr(const struct xattr_handler *handler,
+				    struct dentry *dentry, const char *name,
+				    void *buffer, size_t size)
 {
 	return hfsplus_getxattr(dentry, name, buffer, size,
 				XATTR_TRUSTED_PREFIX,
 				XATTR_TRUSTED_PREFIX_LEN);
 }
 
-static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int hfsplus_trusted_setxattr(const struct xattr_handler *handler,
+				    struct dentry *dentry, const char *name,
+				    const void *buffer, size_t size, int flags)
 {
 	return hfsplus_setxattr(dentry, name, buffer, size, flags,
 				XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
 }
 
-static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
-{
-	/*
-	 * This method is not used.
-	 * It is used hfsplus_listxattr() instead of generic_listxattr().
-	 */
-	return -EOPNOTSUPP;
-}
-
 const struct xattr_handler hfsplus_xattr_trusted_handler = {
 	.prefix	= XATTR_TRUSTED_PREFIX,
-	.list	= hfsplus_trusted_listxattr,
 	.get	= hfsplus_trusted_getxattr,
 	.set	= hfsplus_trusted_setxattr,
 };

fs/hfsplus/xattr_user.c

@@ -11,34 +11,25 @@
 #include "hfsplus_fs.h"
 #include "xattr.h"
 
-static int hfsplus_user_getxattr(struct dentry *dentry, const char *name,
-					void *buffer, size_t size, int type)
+static int hfsplus_user_getxattr(const struct xattr_handler *handler,
+				 struct dentry *dentry, const char *name,
+				 void *buffer, size_t size)
 {
 
 	return hfsplus_getxattr(dentry, name, buffer, size,
 				XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
 }
 
-static int hfsplus_user_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int hfsplus_user_setxattr(const struct xattr_handler *handler,
+				 struct dentry *dentry, const char *name,
+				 const void *buffer, size_t size, int flags)
 {
 	return hfsplus_setxattr(dentry, name, buffer, size, flags,
 				XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
 }
 
-static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
-{
-	/*
-	 * This method is not used.
-	 * It is used hfsplus_listxattr() instead of generic_listxattr().
-	 */
-	return -EOPNOTSUPP;
-}
-
 const struct xattr_handler hfsplus_xattr_user_handler = {
 	.prefix	= XATTR_USER_PREFIX,
-	.list	= hfsplus_user_listxattr,
 	.get	= hfsplus_user_getxattr,
 	.set	= hfsplus_user_setxattr,
 };

fs/jffs2/security.c

@@ -48,8 +48,9 @@ int jffs2_init_security(struct inode *inode, struct inode *dir,
 }
 
 /* ---- XATTR Handler for "security.*" ----------------- */
-static int jffs2_security_getxattr(struct dentry *dentry, const char *name,
-				   void *buffer, size_t size, int type)
+static int jffs2_security_getxattr(const struct xattr_handler *handler,
+				   struct dentry *dentry, const char *name,
+				   void *buffer, size_t size)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -58,8 +59,9 @@ static int jffs2_security_getxattr(struct dentry *dentry, const char *name,
 				 name, buffer, size);
 }
 
-static int jffs2_security_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int jffs2_security_setxattr(const struct xattr_handler *handler,
+				   struct dentry *dentry, const char *name,
+				   const void *buffer, size_t size, int flags)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -68,8 +70,10 @@ static int jffs2_security_setxattr(struct dentry *dentry, const char *name,
 				 name, buffer, size, flags);
 }
 
-static size_t jffs2_security_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
+static size_t jffs2_security_listxattr(const struct xattr_handler *handler,
+				       struct dentry *dentry, char *list,
+				       size_t list_size, const char *name,
+				       size_t name_len)
 {
 	size_t retlen = XATTR_SECURITY_PREFIX_LEN + name_len + 1;
 

fs/jffs2/xattr.c

@@ -1001,11 +1001,12 @@ ssize_t jffs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
 		if (!xhandle)
 			continue;
 		if (buffer) {
-			rc = xhandle->list(dentry, buffer+len, size-len,
-					   xd->xname, xd->name_len, xd->flags);
+			rc = xhandle->list(xhandle, dentry, buffer + len,
+					   size - len, xd->xname,
+					   xd->name_len);
 		} else {
-			rc = xhandle->list(dentry, NULL, 0, xd->xname,
-					   xd->name_len, xd->flags);
+			rc = xhandle->list(xhandle, dentry, NULL, 0,
+					   xd->xname, xd->name_len);
 		}
 		if (rc < 0)
 			goto out;

fs/jffs2/xattr_trusted.c

@@ -16,8 +16,9 @@
 #include <linux/mtd/mtd.h>
 #include "nodelist.h"
 
-static int jffs2_trusted_getxattr(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
+				  struct dentry *dentry, const char *name,
+				  void *buffer, size_t size)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -25,8 +26,9 @@ static int jffs2_trusted_getxattr(struct dentry *dentry, const char *name,
 				 name, buffer, size);
 }
 
-static int jffs2_trusted_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
+				  struct dentry *dentry, const char *name,
+				  const void *buffer, size_t size, int flags)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -34,11 +36,16 @@ static int jffs2_trusted_setxattr(struct dentry *dentry, const char *name,
 				 name, buffer, size, flags);
 }
 
-static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
+static size_t jffs2_trusted_listxattr(const struct xattr_handler *handler,
+				      struct dentry *dentry, char *list,
+				      size_t list_size, const char *name,
+				      size_t name_len)
 {
 	size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1;
 
+	if (!capable(CAP_SYS_ADMIN))
+		return 0;
+
 	if (list && retlen<=list_size) {
 		strcpy(list, XATTR_TRUSTED_PREFIX);
 		strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name);

fs/jffs2/xattr_user.c

@@ -16,8 +16,9 @@
 #include <linux/mtd/mtd.h>
 #include "nodelist.h"
 
-static int jffs2_user_getxattr(struct dentry *dentry, const char *name,
-			       void *buffer, size_t size, int type)
+static int jffs2_user_getxattr(const struct xattr_handler *handler,
+			       struct dentry *dentry, const char *name,
+			       void *buffer, size_t size)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -25,8 +26,9 @@ static int jffs2_user_getxattr(struct dentry *dentry, const char *name,
 				 name, buffer, size);
 }
 
-static int jffs2_user_setxattr(struct dentry *dentry, const char *name,
-		const void *buffer, size_t size, int flags, int type)
+static int jffs2_user_setxattr(const struct xattr_handler *handler,
+			       struct dentry *dentry, const char *name,
+			       const void *buffer, size_t size, int flags)
 {
 	if (!strcmp(name, ""))
 		return -EINVAL;
@@ -34,8 +36,10 @@ static int jffs2_user_setxattr(struct dentry *dentry, const char *name,
 				 name, buffer, size, flags);
 }
 
-static size_t jffs2_user_listxattr(struct dentry *dentry, char *list,
-		size_t list_size, const char *name, size_t name_len, int type)
+static size_t jffs2_user_listxattr(const struct xattr_handler *handler,
+				   struct dentry *dentry, char *list,
+				   size_t list_size, const char *name,
+				   size_t name_len)
 {
 	size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1;
 

fs/nfs/nfs4proc.c

@@ -6248,9 +6248,10 @@ 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(struct dentry *dentry, const char *key,
+static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
+				   struct dentry *dentry, const char *key,
 				   const void *buf, size_t buflen,
-				   int flags, int type)
+				   int flags)
 {
 	if (strcmp(key, "") != 0)
 		return -EINVAL;
@@ -6258,8 +6259,9 @@ static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
 	return nfs4_proc_set_acl(d_inode(dentry), buf, buflen);
 }
 
-static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
-				   void *buf, size_t buflen, int type)
+static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
+				   struct dentry *dentry, const char *key,
+				   void *buf, size_t buflen)
 {
 	if (strcmp(key, "") != 0)
 		return -EINVAL;
@@ -6267,9 +6269,10 @@ static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
 	return nfs4_proc_get_acl(d_inode(dentry), buf, buflen);
 }
 
-static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
+static size_t nfs4_xattr_list_nfs4_acl(const struct xattr_handler *handler,
+				       struct dentry *dentry, char *list,
 				       size_t list_len, const char *name,
-				       size_t name_len, int type)
+				       size_t name_len)
 {
 	size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
 
@@ -6287,9 +6290,10 @@ static inline int nfs4_server_supports_labels(struct nfs_server *server)
 	return server->caps & NFS_CAP_SECURITY_LABEL;
 }
 
-static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key,
-				   const void *buf, size_t buflen,
-				   int flags, int type)
+static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
+				     struct dentry *dentry, const char *key,
+				     const void *buf, size_t buflen,
+				     int flags)
 {
 	if (security_ismaclabel(key))
 		return nfs4_set_security_label(dentry, buf, buflen);
@@ -6297,17 +6301,19 @@ static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key,
 	return -EOPNOTSUPP;
 }
 
-static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key,
-				   void *buf, size_t buflen, int type)
+static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler,
+				     struct dentry *dentry, const char *key,
+				     void *buf, size_t buflen)
 {
 	if (security_ismaclabel(key))
 		return nfs4_get_security_label(d_inode(dentry), buf, buflen);
 	return -EOPNOTSUPP;
 }
 
-static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list,
-				       size_t list_len, const char *name,
-				       size_t name_len, int type)
+static size_t nfs4_xattr_list_nfs4_label(const struct xattr_handler *handler,
+					 struct dentry *dentry, char *list,
+					 size_t list_len, const char *name,
+					 size_t name_len)
 {
 	size_t len = 0;
 

fs/ocfs2/xattr.c

@@ -7229,9 +7229,10 @@ leave:
 /*
  * 'security' attributes support
  */
-static size_t ocfs2_xattr_security_list(struct dentry *dentry, char *list,
+static size_t ocfs2_xattr_security_list(const struct xattr_handler *handler,
+					struct dentry *dentry, char *list,
 					size_t list_size, const char *name,
-					size_t name_len, int type)
+					size_t name_len)
 {
 	const size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -7244,8 +7245,9 @@ static size_t ocfs2_xattr_security_list(struct dentry *dentry, char *list,
 	return total_len;
 }
 
-static int ocfs2_xattr_security_get(struct dentry *dentry, const char *name,
-				    void *buffer, size_t size, int type)
+static int ocfs2_xattr_security_get(const struct xattr_handler *handler,
+				    struct dentry *dentry, const char *name,
+				    void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -7253,8 +7255,9 @@ static int ocfs2_xattr_security_get(struct dentry *dentry, const char *name,
 			       name, buffer, size);
 }
 
-static int ocfs2_xattr_security_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+static int ocfs2_xattr_security_set(const struct xattr_handler *handler,
+				    struct dentry *dentry, const char *name,
+				    const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -7319,9 +7322,10 @@ const struct xattr_handler ocfs2_xattr_security_handler = {
 /*
  * 'trusted' attributes support
  */
-static size_t ocfs2_xattr_trusted_list(struct dentry *dentry, char *list,
+static size_t ocfs2_xattr_trusted_list(const struct xattr_handler *handler,
+				       struct dentry *dentry, char *list,
 				       size_t list_size, const char *name,
-				       size_t name_len, int type)
+				       size_t name_len)
 {
 	const size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -7337,8 +7341,9 @@ static size_t ocfs2_xattr_trusted_list(struct dentry *dentry, char *list,
 	return total_len;
 }
 
-static int ocfs2_xattr_trusted_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+static int ocfs2_xattr_trusted_get(const struct xattr_handler *handler,
+				   struct dentry *dentry, const char *name,
+				   void *buffer, size_t size)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -7346,8 +7351,9 @@ static int ocfs2_xattr_trusted_get(struct dentry *dentry, const char *name,
 			       name, buffer, size);
 }
 
-static int ocfs2_xattr_trusted_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+static int ocfs2_xattr_trusted_set(const struct xattr_handler *handler,
+				   struct dentry *dentry, const char *name,
+				   const void *value, size_t size, int flags)
 {
 	if (strcmp(name, "") == 0)
 		return -EINVAL;
@@ -7366,9 +7372,10 @@ const struct xattr_handler ocfs2_xattr_trusted_handler = {
 /*
  * 'user' attributes support
  */
-static size_t ocfs2_xattr_user_list(struct dentry *dentry, char *list,
+static size_t ocfs2_xattr_user_list(const struct xattr_handler *handler,
+				    struct dentry *dentry, char *list,
 				    size_t list_size, const char *name,
-				    size_t name_len, int type)
+				    size_t name_len)
 {
 	const size_t prefix_len = XATTR_USER_PREFIX_LEN;
 	const size_t total_len = prefix_len + name_len + 1;
@@ -7385,8 +7392,9 @@ static size_t ocfs2_xattr_user_list(struct dentry *dentry, char *list,
 	return total_len;
 }
 
-static int ocfs2_xattr_user_get(struct dentry *dentry, const char *name,
-		void *buffer, size_t size, int type)
+static int ocfs2_xattr_user_get(const struct xattr_handler *handler,
+				struct dentry *dentry, const char *name,
+				void *buffer, size_t size)
 {
 	struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);
 
@@ -7398,8 +7406,9 @@ static int ocfs2_xattr_user_get(struct dentry *dentry, const char *name,
 			       buffer, size);
 }
 
-static int ocfs2_xattr_user_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+static int ocfs2_xattr_user_set(const struct xattr_handler *handler,
+				struct dentry *dentry, const char *name,
+				const void *value, size_t size, int flags)
 {
 	struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);
 

fs/posix_acl.c

@@ -762,18 +762,21 @@ posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl,
 EXPORT_SYMBOL (posix_acl_to_xattr);
 
 static int
-posix_acl_xattr_get(struct dentry *dentry, const char *name,
-		void *value, size_t size, int type)
+posix_acl_xattr_get(const struct xattr_handler *handler,
+		    struct dentry *dentry, const char *name,
+		    void *value, size_t size)
 {
 	struct posix_acl *acl;
 	int error;
 
+	if (strcmp(name, "") != 0)
+		return -EINVAL;
 	if (!IS_POSIXACL(d_backing_inode(dentry)))
 		return -EOPNOTSUPP;
 	if (d_is_symlink(dentry))
 		return -EOPNOTSUPP;
 
-	acl = get_acl(d_backing_inode(dentry), type);
+	acl = get_acl(d_backing_inode(dentry), handler->flags);
 	if (IS_ERR(acl))
 		return PTR_ERR(acl);
 	if (acl == NULL)
@@ -786,19 +789,22 @@ posix_acl_xattr_get(struct dentry *dentry, const char *name,
 }
 
 static int
-posix_acl_xattr_set(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags, int type)
+posix_acl_xattr_set(const struct xattr_handler *handler,
+		    struct dentry *dentry, const char *name,
+		    const void *value, size_t size, int flags)
 {
 	struct inode *inode = d_backing_inode(dentry);
 	struct posix_acl *acl = NULL;
 	int ret;
 
+	if (strcmp(name, "") != 0)
+		return -EINVAL;
 	if (!IS_POSIXACL(inode))
 		return -EOPNOTSUPP;
 	if (!inode->i_op->set_acl)
 		return -EOPNOTSUPP;
 
-	if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
+	if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
 		return value ? -EACCES : 0;
 	if (!inode_owner_or_capable(inode))
 		return -EPERM;
@@ -815,28 +821,22 @@ posix_acl_xattr_set(struct dentry *dentry, const char *name,
 		}
 	}
 
-	ret = inode->i_op->set_acl(inode, acl, type);
+	ret = inode->i_op->set_acl(inode, acl, handler->flags);
 out:
 	posix_acl_release(acl);
 	return ret;
 }
 
 static size_t
-posix_acl_xattr_list(struct dentry *dentry, char *list, size_t list_size,
-		const char *name, size_t name_len, int type)
+posix_acl_xattr_list(const struct xattr_handler *handler,
+		     struct dentry *dentry, char *list, size_t list_size,
+		     const char *name, size_t name_len)
 {
-	const char *xname;
+	const char *xname = handler->prefix;
 	size_t size;
 
 	if (!IS_POSIXACL(d_backing_inode(dentry)))
-		return -EOPNOTSUPP;
-	if (d_is_symlink(dentry))
-		return -EOPNOTSUPP;
-
-	if (type == ACL_TYPE_ACCESS)
-		xname = POSIX_ACL_XATTR_ACCESS;
-	else
-		xname = POSIX_ACL_XATTR_DEFAULT;
+		return 0;
 
 	size = strlen(xname) + 1;
 	if (list && size <= list_size)

fs/reiserfs/xattr.c

@@ -778,7 +778,7 @@ reiserfs_getxattr(struct dentry * dentry, const char *name, void *buffer,
 	if (!handler || get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1)
 		return -EOPNOTSUPP;
 
-	return handler->get(dentry, name, buffer, size, handler->flags);
+	return handler->get(handler, dentry, name, buffer, size);
 }
 
 /*
@@ -797,7 +797,7 @@ reiserfs_setxattr(struct dentry *dentry, const char *name, const void *value,
 	if (!handler || get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1)
 		return -EOPNOTSUPP;
 
-	return handler->set(dentry, name, value, size, flags, handler->flags);
+	return handler->set(handler, dentry, name, value, size, flags);
 }
 
 /*
@@ -814,7 +814,7 @@ int reiserfs_removexattr(struct dentry *dentry, const char *name)
 	if (!handler || get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1)
 		return -EOPNOTSUPP;
 
-	return handler->set(dentry, name, NULL, 0, XATTR_REPLACE, handler->flags);
+	return handler->set(handler, dentry, name, NULL, 0, XATTR_REPLACE);
 }
 
 struct listxattr_buf {
@@ -842,14 +842,14 @@ static int listxattr_filler(struct dir_context *ctx, const char *name,
 		if (!handler)	/* Unsupported xattr name */
 			return 0;
 		if (b->buf) {
-			size = handler->list(b->dentry, b->buf + b->pos,
-					 b->size, name, namelen,
-					 handler->flags);
+			size = handler->list(handler, b->dentry,
+					     b->buf + b->pos, b->size, name,
+					     namelen);
 			if (size > b->size)
 				return -ERANGE;
 		} else {
-			size = handler->list(b->dentry, NULL, 0, name,
-					     namelen, handler->flags);
+			size = handler->list(handler, b->dentry,
+					     NULL, 0, name, namelen);
 		}
 
 		b->pos += size;

fs/reiserfs/xattr_security.c

@@ -9,8 +9,8 @@
 #include <linux/uaccess.h>
 
 static int
-security_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
-		int handler_flags)
+security_get(const struct xattr_handler *handler, struct dentry *dentry,
+	     const char *name, void *buffer, size_t size)
 {
 	if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
 		return -EINVAL;
@@ -22,8 +22,8 @@ security_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
 }
 
 static int
-security_set(struct dentry *dentry, const char *name, const void *buffer,
-	     size_t size, int flags, int handler_flags)
+security_set(const struct xattr_handler *handler, struct dentry *dentry,
+	     const char *name, const void *buffer, size_t size, int flags)
 {
 	if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
 		return -EINVAL;
@@ -34,8 +34,9 @@ security_set(struct dentry *dentry, const char *name, const void *buffer,
 	return reiserfs_xattr_set(d_inode(dentry), name, buffer, size, flags);
 }
 
-static size_t security_list(struct dentry *dentry, char *list, size_t list_len,
-			    const char *name, size_t namelen, int handler_flags)
+static size_t security_list(const struct xattr_handler *handler,
+			    struct dentry *dentry, char *list, size_t list_len,
+			    const char *name, size_t namelen)
 {
 	const size_t len = namelen + 1;
 

fs/reiserfs/xattr_trusted.c

@@ -8,8 +8,8 @@
 #include <linux/uaccess.h>
 
 static int
-trusted_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
-	    int handler_flags)
+trusted_get(const struct xattr_handler *handler, struct dentry *dentry,
+	    const char *name, void *buffer, size_t size)
 {
 	if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX))
 		return -EINVAL;
@@ -21,8 +21,8 @@ trusted_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
 }
 
 static int
-trusted_set(struct dentry *dentry, const char *name, const void *buffer,
-	    size_t size, int flags, int handler_flags)
+trusted_set(const struct xattr_handler *handler, struct dentry *dentry,
+	    const char *name, const void *buffer, size_t size, int flags)
 {
 	if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX))
 		return -EINVAL;
@@ -33,8 +33,9 @@ trusted_set(struct dentry *dentry, const char *name, const void *buffer,
 	return reiserfs_xattr_set(d_inode(dentry), name, buffer, size, flags);
 }
 
-static size_t trusted_list(struct dentry *dentry, char *list, size_t list_size,
-			   const char *name, size_t name_len, int handler_flags)
+static size_t trusted_list(const struct xattr_handler *handler,
+			   struct dentry *dentry, char *list, size_t list_size,
+			   const char *name, size_t name_len)
 {
 	const size_t len = name_len + 1;
 

fs/reiserfs/xattr_user.c

@@ -7,8 +7,8 @@
 #include <linux/uaccess.h>
 
 static int
-user_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
-	 int handler_flags)
+user_get(const struct xattr_handler *handler, struct dentry *dentry,
+	 const char *name, void *buffer, size_t size)
 {
 
 	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
@@ -19,8 +19,8 @@ user_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
 }
 
 static int
-user_set(struct dentry *dentry, const char *name, const void *buffer,
-	 size_t size, int flags, int handler_flags)
+user_set(const struct xattr_handler *handler, struct dentry *dentry,
+	 const char *name, const void *buffer, size_t size, int flags)
 {
 	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
 		return -EINVAL;
@@ -30,8 +30,9 @@ user_set(struct dentry *dentry, const char *name, const void *buffer,
 	return reiserfs_xattr_set(d_inode(dentry), name, buffer, size, flags);
 }
 
-static size_t user_list(struct dentry *dentry, char *list, size_t list_size,
-			const char *name, size_t name_len, int handler_flags)
+static size_t user_list(const struct xattr_handler *handler,
+			struct dentry *dentry, char *list, size_t list_size,
+			const char *name, size_t name_len)
 {
 	const size_t len = name_len + 1;
 

fs/squashfs/xattr.c

@@ -68,8 +68,8 @@ ssize_t squashfs_listxattr(struct dentry *d, char *buffer,
 		name_size = le16_to_cpu(entry.size);
 		handler = squashfs_xattr_handler(le16_to_cpu(entry.type));
 		if (handler)
-			prefix_size = handler->list(d, buffer, rest, NULL,
-				name_size, handler->flags);
+			prefix_size = handler->list(handler, d, buffer, rest,
+						    NULL, name_size);
 		if (prefix_size) {
 			if (buffer) {
 				if (prefix_size + name_size + 1 > rest) {
@@ -212,88 +212,68 @@ failed:
 }
 
 
-/*
- * User namespace support
- */
-static size_t squashfs_user_list(struct dentry *d, char *list, size_t list_size,
-	const char *name, size_t name_len, int type)
+static size_t squashfs_xattr_handler_list(const struct xattr_handler *handler,
+					  struct dentry *d, char *list,
+					  size_t list_size, const char *name,
+					  size_t name_len)
 {
-	if (list && XATTR_USER_PREFIX_LEN <= list_size)
-		memcpy(list, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
-	return XATTR_USER_PREFIX_LEN;
+	int len = strlen(handler->prefix);
+
+	if (list && len <= list_size)
+		memcpy(list, handler->prefix, len);
+	return len;
 }
 
-static int squashfs_user_get(struct dentry *d, const char *name, void *buffer,
-	size_t size, int type)
+static int squashfs_xattr_handler_get(const struct xattr_handler *handler,
+				      struct dentry *d, const char *name,
+				      void *buffer, size_t size)
 {
 	if (name[0] == '\0')
 		return  -EINVAL;
 
-	return squashfs_xattr_get(d_inode(d), SQUASHFS_XATTR_USER, name,
+	return squashfs_xattr_get(d_inode(d), handler->flags, name,
 		buffer, size);
 }
 
+/*
+ * User namespace support
+ */
 static const struct xattr_handler squashfs_xattr_user_handler = {
 	.prefix	= XATTR_USER_PREFIX,
-	.list	= squashfs_user_list,
-	.get	= squashfs_user_get
+	.flags	= SQUASHFS_XATTR_USER,
+	.list	= squashfs_xattr_handler_list,
+	.get	= squashfs_xattr_handler_get
 };
 
 /*
  * Trusted namespace support
  */
-static size_t squashfs_trusted_list(struct dentry *d, char *list,
-	size_t list_size, const char *name, size_t name_len, int type)
+static size_t squashfs_trusted_xattr_handler_list(const struct xattr_handler *handler,
+						  struct dentry *d, char *list,
+						  size_t list_size, const char *name,
+						  size_t name_len)
 {
 	if (!capable(CAP_SYS_ADMIN))
 		return 0;
-
-	if (list && XATTR_TRUSTED_PREFIX_LEN <= list_size)
-		memcpy(list, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
-	return XATTR_TRUSTED_PREFIX_LEN;
-}
-
-static int squashfs_trusted_get(struct dentry *d, const char *name,
-	void *buffer, size_t size, int type)
-{
-	if (name[0] == '\0')
-		return  -EINVAL;
-
-	return squashfs_xattr_get(d_inode(d), SQUASHFS_XATTR_TRUSTED, name,
-		buffer, size);
+	return squashfs_xattr_handler_list(handler, d, list, list_size, name,
+					   name_len);
 }
 
 static const struct xattr_handler squashfs_xattr_trusted_handler = {
 	.prefix	= XATTR_TRUSTED_PREFIX,
-	.list	= squashfs_trusted_list,
-	.get	= squashfs_trusted_get
+	.flags	= SQUASHFS_XATTR_TRUSTED,
+	.list	= squashfs_trusted_xattr_handler_list,
+	.get	= squashfs_xattr_handler_get
 };
 
 /*
  * Security namespace support
  */
-static size_t squashfs_security_list(struct dentry *d, char *list,
-	size_t list_size, const char *name, size_t name_len, int type)
-{
-	if (list && XATTR_SECURITY_PREFIX_LEN <= list_size)
-		memcpy(list, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN);
-	return XATTR_SECURITY_PREFIX_LEN;
-}
-
-static int squashfs_security_get(struct dentry *d, const char *name,
-	void *buffer, size_t size, int type)
-{
-	if (name[0] == '\0')
-		return  -EINVAL;
-
-	return squashfs_xattr_get(d_inode(d), SQUASHFS_XATTR_SECURITY, name,
-		buffer, size);
-}
-
 static const struct xattr_handler squashfs_xattr_security_handler = {
 	.prefix	= XATTR_SECURITY_PREFIX,
-	.list	= squashfs_security_list,
-	.get	= squashfs_security_get
+	.flags	= SQUASHFS_XATTR_SECURITY,
+	.list	= squashfs_xattr_handler_list,
+	.get	= squashfs_xattr_handler_get
 };
 
 static const struct xattr_handler *squashfs_xattr_handler(int type)

fs/ubifs/super.c

@@ -2040,7 +2040,6 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
 	if (c->max_inode_sz > MAX_LFS_FILESIZE)
 		sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;
 	sb->s_op = &ubifs_super_operations;
-	sb->s_xattr = ubifs_xattr_handlers;
 
 	mutex_lock(&c->umount_mutex);
 	err = mount_ubifs(c);

fs/ubifs/ubifs.h

@@ -1470,7 +1470,6 @@ extern spinlock_t ubifs_infos_lock;
 extern atomic_long_t ubifs_clean_zn_cnt;
 extern struct kmem_cache *ubifs_inode_slab;
 extern const struct super_operations ubifs_super_operations;
-extern const struct xattr_handler *ubifs_xattr_handlers[];
 extern const struct address_space_operations ubifs_file_address_operations;
 extern const struct file_operations ubifs_file_operations;
 extern const struct inode_operations ubifs_file_inode_operations;

fs/ubifs/xattr.c

@@ -588,46 +588,6 @@ out_free:
 	return err;
 }
 
-static size_t security_listxattr(struct dentry *d, char *list, size_t list_size,
-				 const char *name, size_t name_len, int flags)
-{
-	const int prefix_len = XATTR_SECURITY_PREFIX_LEN;
-	const size_t total_len = prefix_len + name_len + 1;
-
-	if (list && total_len <= list_size) {
-		memcpy(list, XATTR_SECURITY_PREFIX, prefix_len);
-		memcpy(list + prefix_len, name, name_len);
-		list[prefix_len + name_len] = '\0';
-	}
-
-	return total_len;
-}
-
-static int security_getxattr(struct dentry *d, const char *name, void *buffer,
-		      size_t size, int flags)
-{
-	return ubifs_getxattr(d, name, buffer, size);
-}
-
-static int security_setxattr(struct dentry *d, const char *name,
-			     const void *value, size_t size, int flags,
-			     int handler_flags)
-{
-	return ubifs_setxattr(d, name, value, size, flags);
-}
-
-static const struct xattr_handler ubifs_xattr_security_handler = {
-	.prefix = XATTR_SECURITY_PREFIX,
-	.list   = security_listxattr,
-	.get    = security_getxattr,
-	.set    = security_setxattr,
-};
-
-const struct xattr_handler *ubifs_xattr_handlers[] = {
-	&ubifs_xattr_security_handler,
-	NULL,
-};
-
 static int init_xattrs(struct inode *inode, const struct xattr *xattr_array,
 		      void *fs_info)
 {

fs/xattr.c

@@ -720,7 +720,7 @@ generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t s
 	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
 	if (!handler)
 		return -EOPNOTSUPP;
-	return handler->get(dentry, name, buffer, size, handler->flags);
+	return handler->get(handler, dentry, name, buffer, size);
 }
 
 /*
@@ -735,15 +735,15 @@ generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 
 	if (!buffer) {
 		for_each_xattr_handler(handlers, handler) {
-			size += handler->list(dentry, NULL, 0, NULL, 0,
-					      handler->flags);
+			size += handler->list(handler, dentry, NULL, 0,
+					      NULL, 0);
 		}
 	} else {
 		char *buf = buffer;
 
 		for_each_xattr_handler(handlers, handler) {
-			size = handler->list(dentry, buf, buffer_size,
-					     NULL, 0, handler->flags);
+			size = handler->list(handler, dentry, buf, buffer_size,
+					     NULL, 0);
 			if (size > buffer_size)
 				return -ERANGE;
 			buf += size;
@@ -767,7 +767,7 @@ generic_setxattr(struct dentry *dentry, const char *name, const void *value, siz
 	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
 	if (!handler)
 		return -EOPNOTSUPP;
-	return handler->set(dentry, name, value, size, flags, handler->flags);
+	return handler->set(handler, dentry, name, value, size, flags);
 }
 
 /*
@@ -782,8 +782,7 @@ generic_removexattr(struct dentry *dentry, const char *name)
 	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
 	if (!handler)
 		return -EOPNOTSUPP;
-	return handler->set(dentry, name, NULL, 0,
-			    XATTR_REPLACE, handler->flags);
+	return handler->set(handler, dentry, name, NULL, 0, XATTR_REPLACE);
 }
 
 EXPORT_SYMBOL(generic_getxattr);
@@ -791,6 +790,30 @@ EXPORT_SYMBOL(generic_listxattr);
 EXPORT_SYMBOL(generic_setxattr);
 EXPORT_SYMBOL(generic_removexattr);
 
+/**
+ * xattr_full_name  -  Compute full attribute name from suffix
+ *
+ * @handler:	handler of the xattr_handler operation
+ * @name:	name passed to the xattr_handler operation
+ *
+ * The get and set xattr handler operations are called with the remainder of
+ * the attribute name after skipping the handler's prefix: for example, "foo"
+ * is passed to the get operation of a handler with prefix "user." to get
+ * attribute "user.foo".  The full name is still "there" in the name though.
+ *
+ * Note: the list xattr handler operation when called from the vfs is passed a
+ * NULL name; some file systems use this operation internally, with varying
+ * semantics.
+ */
+const char *xattr_full_name(const struct xattr_handler *handler,
+			    const char *name)
+{
+	size_t prefix_len = strlen(handler->prefix);
+
+	return name - prefix_len;
+}
+EXPORT_SYMBOL(xattr_full_name);
+
 /*
  * Allocate new xattr and copy in the value; but leave the name to callers.
  */

fs/xfs/xfs_xattr.c

@@ -32,9 +32,10 @@
 
 
 static int
-xfs_xattr_get(struct dentry *dentry, const char *name,
-		void *value, size_t size, int xflags)
+xfs_xattr_get(const struct xattr_handler *handler, struct dentry *dentry,
+		const char *name, void *value, size_t size)
 {
+	int xflags = handler->flags;
 	struct xfs_inode *ip = XFS_I(d_inode(dentry));
 	int error, asize = size;
 
@@ -76,9 +77,10 @@ xfs_forget_acl(
 }
 
 static int
-xfs_xattr_set(struct dentry *dentry, const char *name, const void *value,
-		size_t size, int flags, int xflags)
+xfs_xattr_set(const struct xattr_handler *handler, struct dentry *dentry,
+		const char *name, const void *value, size_t size, int flags)
 {
+	int			xflags = handler->flags;
 	struct xfs_inode	*ip = XFS_I(d_inode(dentry));
 	int			error;
 

include/linux/xattr.h

@@ -21,15 +21,19 @@ struct dentry;
 
 struct xattr_handler {
 	const char *prefix;
-	int flags;	/* fs private flags passed back to the handlers */
-	size_t (*list)(struct dentry *dentry, char *list, size_t list_size,
-		       const char *name, size_t name_len, int handler_flags);
-	int (*get)(struct dentry *dentry, const char *name, void *buffer,
-		   size_t size, int handler_flags);
-	int (*set)(struct dentry *dentry, const char *name, const void *buffer,
-		   size_t size, int flags, int handler_flags);
+	int flags;      /* fs private flags */
+	size_t (*list)(const struct xattr_handler *, struct dentry *dentry,
+		       char *list, size_t list_size, const char *name,
+		       size_t name_len);
+	int (*get)(const struct xattr_handler *, struct dentry *dentry,
+		   const char *name, void *buffer, size_t size);
+	int (*set)(const struct xattr_handler *, struct dentry *dentry,
+		   const char *name, const void *buffer, size_t size,
+		   int flags);
 };
 
+const char *xattr_full_name(const struct xattr_handler *, const char *);
+
 struct xattr {
 	const char *name;
 	void *value;