Merge branch 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs xattr updates from Al Viro:
 "xattr stuff from Andreas

  This completes the switch to xattr_handler ->get()/->set() from
  ->getxattr/->setxattr/->removexattr"

* 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: Remove {get,set,remove}xattr inode operations
  xattr: Stop calling {get,set,remove}xattr inode operations
  vfs: Check for the IOP_XATTR flag in listxattr
  xattr: Add __vfs_{get,set,remove}xattr helpers
  libfs: Use IOP_XATTR flag for empty directory handling
  vfs: Use IOP_XATTR flag for bad-inode handling
  vfs: Add IOP_XATTR inode operations flag
  vfs: Move xattr_resolve_name to the front of fs/xattr.c
  ecryptfs: Switch to generic xattr handlers
  sockfs: Get rid of getxattr iop
  sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names
  kernfs: Switch to generic xattr handlers
  hfs: Switch to generic xattr handlers
  jffs2: Remove jffs2_{get,set,remove}xattr macros
  xattr: Remove unnecessary NULL attribute name check

Documentation/filesystems/Locking

@@ -61,10 +61,7 @@ prototypes:
 	int (*get_acl)(struct inode *, int);
 	int (*setattr) (struct dentry *, struct iattr *);
 	int (*getattr) (struct vfsmount *, struct dentry *, struct kstat *);
-	int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
-	ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
 	ssize_t (*listxattr) (struct dentry *, char *, size_t);
-	int (*removexattr) (struct dentry *, const char *);
 	int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len);
 	void (*update_time)(struct inode *, struct timespec *, int);
 	int (*atomic_open)(struct inode *, struct dentry *,
@@ -91,15 +88,13 @@ setattr:	yes
 permission:	no (may not block if called in rcu-walk mode)
 get_acl:	no
 getattr:	no
-setxattr:	yes
-getxattr:	no
 listxattr:	no
-removexattr:	yes
 fiemap:		no
 update_time:	no
 atomic_open:	yes
 tmpfile:	no
 
+
 	Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
 victim.
 	cross-directory ->rename() and rename2() has (per-superblock)
@@ -108,6 +103,23 @@ victim.
 See Documentation/filesystems/directory-locking for more detailed discussion
 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);
+
+locking rules:
+	all may block
+		i_mutex(inode)
+list:		no
+get:		no
+set:		yes
+
 --------------------------- super_operations ---------------------------
 prototypes:
 	struct inode *(*alloc_inode)(struct super_block *sb);

Documentation/filesystems/vfs.txt

@@ -323,6 +323,35 @@ Whoever sets up the inode is responsible for filling in the "i_op" field. This
 is a pointer to a "struct inode_operations" which describes the methods that
 can be performed on individual inodes.
 
+struct xattr_handlers
+---------------------
+
+On filesystems that support extended attributes (xattrs), the s_xattr
+superblock field points to a NULL-terminated array of xattr handlers.  Extended
+attributes are name:value pairs.
+
+  name: Indicates that the handler matches attributes with the specified name
+	(such as "system.posix_acl_access"); the prefix field must be NULL.
+
+  prefix: Indicates that the handler matches all attributes with the specified
+	name prefix (such as "user."); the name field must be NULL.
+
+  list: Determine if attributes matching this xattr handler should be listed
+	for a particular dentry.  Used by some listxattr implementations like
+	generic_listxattr.
+
+  get: Called by the VFS to get the value of a particular extended attribute.
+	This method is called by the getxattr(2) system call.
+
+  set: Called by the VFS to set the value of a particular extended attribute.
+	When the new value is NULL, called to remove a particular extended
+	attribute.  This method is called by the the setxattr(2) and
+	removexattr(2) system calls.
+
+When none of the xattr handlers of a filesystem match the specified attribute
+name or when a filesystem doesn't support extended attributes, the various
+*xattr(2) system calls return -EOPNOTSUPP.
+
 
 The Inode Object
 ================
@@ -356,10 +385,7 @@ struct inode_operations {
 	int (*get_acl)(struct inode *, int);
 	int (*setattr) (struct dentry *, struct iattr *);
 	int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
-	int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
-	ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
 	ssize_t (*listxattr) (struct dentry *, char *, size_t);
-	int (*removexattr) (struct dentry *, const char *);
 	void (*update_time)(struct inode *, struct timespec *, int);
 	int (*atomic_open)(struct inode *, struct dentry *, struct file *,
 			unsigned open_flag, umode_t create_mode, int *opened);
@@ -463,19 +489,8 @@ otherwise noted.
   getattr: called by the VFS to get attributes of a file. This method
   	is called by stat(2) and related system calls.
 
-  setxattr: called by the VFS to set an extended attribute for a file.
-  	Extended attribute is a name:value pair associated with an
-  	inode. This method is called by setxattr(2) system call.
-
-  getxattr: called by the VFS to retrieve the value of an extended
-  	attribute name. This method is called by getxattr(2) function
-  	call.
-
   listxattr: called by the VFS to list all extended attributes for a
-  	given file. This method is called by listxattr(2) system call.
+	given file. This method is called by the listxattr(2) system call.
-
-  removexattr: called by the VFS to remove an extended attribute from
-  	a file. This method is called by removexattr(2) system call.
 
   update_time: called by the VFS to update a specific time or the i_version of
   	an inode.  If this is not defined the VFS will update the inode itself

drivers/staging/lustre/lustre/llite/file.c

@@ -3268,10 +3268,7 @@ const struct inode_operations ll_file_inode_operations = {
 	.setattr	= ll_setattr,
 	.getattr	= ll_getattr,
 	.permission	= ll_inode_permission,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ll_listxattr,
-	.removexattr	= generic_removexattr,
 	.fiemap		= ll_fiemap,
 	.get_acl	= ll_get_acl,
 };

drivers/staging/lustre/lustre/llite/namei.c

@@ -1152,10 +1152,7 @@ const struct inode_operations ll_dir_inode_operations = {
 	.setattr	    = ll_setattr,
 	.getattr	    = ll_getattr,
 	.permission	 = ll_inode_permission,
-	.setxattr	   = generic_setxattr,
-	.getxattr	   = generic_getxattr,
 	.listxattr	  = ll_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	    = ll_get_acl,
 };
 
@@ -1163,9 +1160,6 @@ const struct inode_operations ll_special_inode_operations = {
 	.setattr	= ll_setattr,
 	.getattr	= ll_getattr,
 	.permission     = ll_inode_permission,
-	.setxattr       = generic_setxattr,
-	.getxattr       = generic_getxattr,
 	.listxattr      = ll_listxattr,
-	.removexattr    = generic_removexattr,
 	.get_acl	    = ll_get_acl,
 };

drivers/staging/lustre/lustre/llite/symlink.c

@@ -154,8 +154,5 @@ const struct inode_operations ll_fast_symlink_inode_operations = {
 	.get_link	= ll_get_link,
 	.getattr	= ll_getattr,
 	.permission	= ll_inode_permission,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ll_listxattr,
-	.removexattr	= generic_removexattr,
 };

fs/9p/vfs_inode_dotl.c

@@ -967,9 +967,6 @@ const struct inode_operations v9fs_dir_inode_operations_dotl = {
 	.rename = v9fs_vfs_rename,
 	.getattr = v9fs_vfs_getattr_dotl,
 	.setattr = v9fs_vfs_setattr_dotl,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
-	.removexattr = generic_removexattr,
 	.listxattr = v9fs_listxattr,
 	.get_acl = v9fs_iop_get_acl,
 };
@@ -977,9 +974,6 @@ const struct inode_operations v9fs_dir_inode_operations_dotl = {
 const struct inode_operations v9fs_file_inode_operations_dotl = {
 	.getattr = v9fs_vfs_getattr_dotl,
 	.setattr = v9fs_vfs_setattr_dotl,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
-	.removexattr = generic_removexattr,
 	.listxattr = v9fs_listxattr,
 	.get_acl = v9fs_iop_get_acl,
 };
@@ -989,8 +983,5 @@ const struct inode_operations v9fs_symlink_inode_operations_dotl = {
 	.get_link = v9fs_vfs_get_link_dotl,
 	.getattr = v9fs_vfs_getattr_dotl,
 	.setattr = v9fs_vfs_setattr_dotl,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
-	.removexattr = generic_removexattr,
 	.listxattr = v9fs_listxattr,
 };

fs/bad_inode.c

@@ -100,29 +100,12 @@ static int bad_inode_setattr(struct dentry *direntry, struct iattr *attrs)
 	return -EIO;
 }
 
-static int bad_inode_setxattr(struct dentry *dentry, struct inode *inode,
-		const char *name, const void *value, size_t size, int flags)
-{
-	return -EIO;
-}
-
-static ssize_t bad_inode_getxattr(struct dentry *dentry, struct inode *inode,
-			const char *name, void *buffer, size_t size)
-{
-	return -EIO;
-}
-
 static ssize_t bad_inode_listxattr(struct dentry *dentry, char *buffer,
 			size_t buffer_size)
 {
 	return -EIO;
 }
 
-static int bad_inode_removexattr(struct dentry *dentry, const char *name)
-{
-	return -EIO;
-}
-
 static const struct inode_operations bad_inode_ops =
 {
 	.create		= bad_inode_create,
@@ -142,10 +125,7 @@ static const struct inode_operations bad_inode_ops =
 	.permission	= bad_inode_permission,
 	.getattr	= bad_inode_getattr,
 	.setattr	= bad_inode_setattr,
-	.setxattr	= bad_inode_setxattr,
-	.getxattr	= bad_inode_getxattr,
 	.listxattr	= bad_inode_listxattr,
-	.removexattr	= bad_inode_removexattr,
 };
 
 
@@ -175,6 +155,7 @@ void make_bad_inode(struct inode *inode)
 	inode->i_atime = inode->i_mtime = inode->i_ctime =
 		current_fs_time(inode->i_sb);
 	inode->i_op = &bad_inode_ops;	
+	inode->i_opflags &= ~IOP_XATTR;
 	inode->i_fop = &bad_file_ops;	
 }
 EXPORT_SYMBOL(make_bad_inode);

fs/btrfs/inode.c

@@ -10556,10 +10556,7 @@ static const struct inode_operations btrfs_dir_inode_operations = {
 	.symlink	= btrfs_symlink,
 	.setattr	= btrfs_setattr,
 	.mknod		= btrfs_mknod,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= btrfs_listxattr,
-	.removexattr	= generic_removexattr,
 	.permission	= btrfs_permission,
 	.get_acl	= btrfs_get_acl,
 	.set_acl	= btrfs_set_acl,
@@ -10633,10 +10630,7 @@ static const struct address_space_operations btrfs_symlink_aops = {
 static const struct inode_operations btrfs_file_inode_operations = {
 	.getattr	= btrfs_getattr,
 	.setattr	= btrfs_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr      = btrfs_listxattr,
-	.removexattr	= generic_removexattr,
 	.permission	= btrfs_permission,
 	.fiemap		= btrfs_fiemap,
 	.get_acl	= btrfs_get_acl,
@@ -10647,10 +10641,7 @@ static const struct inode_operations btrfs_special_inode_operations = {
 	.getattr	= btrfs_getattr,
 	.setattr	= btrfs_setattr,
 	.permission	= btrfs_permission,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= btrfs_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= btrfs_get_acl,
 	.set_acl	= btrfs_set_acl,
 	.update_time	= btrfs_update_time,
@@ -10661,10 +10652,7 @@ static const struct inode_operations btrfs_symlink_inode_operations = {
 	.getattr	= btrfs_getattr,
 	.setattr	= btrfs_setattr,
 	.permission	= btrfs_permission,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= btrfs_listxattr,
-	.removexattr	= generic_removexattr,
 	.update_time	= btrfs_update_time,
 };
 

fs/cachefiles/bind.c

@@ -20,6 +20,7 @@
 #include <linux/mount.h>
 #include <linux/statfs.h>
 #include <linux/ctype.h>
+#include <linux/xattr.h>
 #include "internal.h"
 
 static int cachefiles_daemon_add_cache(struct cachefiles_cache *caches);
@@ -126,8 +127,7 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache)
 	if (d_is_negative(root) ||
 	    !d_backing_inode(root)->i_op->lookup ||
 	    !d_backing_inode(root)->i_op->mkdir ||
-	    !d_backing_inode(root)->i_op->setxattr ||
+	    !(d_backing_inode(root)->i_opflags & IOP_XATTR) ||
-	    !d_backing_inode(root)->i_op->getxattr ||
 	    !root->d_sb->s_op->statfs ||
 	    !root->d_sb->s_op->sync_fs)
 		goto error_unsupported;

fs/cachefiles/namei.c

@@ -20,6 +20,7 @@
 #include <linux/namei.h>
 #include <linux/security.h>
 #include <linux/slab.h>
+#include <linux/xattr.h>
 #include "internal.h"
 
 #define CACHEFILES_KEYBUF_SIZE 512
@@ -799,8 +800,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
 	}
 
 	ret = -EPERM;
-	if (!d_backing_inode(subdir)->i_op->setxattr ||
+	if (!(d_backing_inode(subdir)->i_opflags & IOP_XATTR) ||
-	    !d_backing_inode(subdir)->i_op->getxattr ||
 	    !d_backing_inode(subdir)->i_op->lookup ||
 	    !d_backing_inode(subdir)->i_op->mkdir ||
 	    !d_backing_inode(subdir)->i_op->create ||

fs/ceph/dir.c

@@ -1486,10 +1486,7 @@ const struct inode_operations ceph_dir_iops = {
 	.permission = ceph_permission,
 	.getattr = ceph_getattr,
 	.setattr = ceph_setattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = ceph_listxattr,
-	.removexattr = generic_removexattr,
 	.get_acl = ceph_get_acl,
 	.set_acl = ceph_set_acl,
 	.mknod = ceph_mknod,

fs/ceph/inode.c

@@ -94,10 +94,7 @@ const struct inode_operations ceph_file_iops = {
 	.permission = ceph_permission,
 	.setattr = ceph_setattr,
 	.getattr = ceph_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = ceph_listxattr,
-	.removexattr = generic_removexattr,
 	.get_acl = ceph_get_acl,
 	.set_acl = ceph_set_acl,
 };
@@ -1885,10 +1882,7 @@ static const struct inode_operations ceph_symlink_iops = {
 	.get_link = simple_get_link,
 	.setattr = ceph_setattr,
 	.getattr = ceph_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = ceph_listxattr,
-	.removexattr = generic_removexattr,
 };
 
 int __ceph_setattr(struct inode *inode, struct iattr *attr)

fs/cifs/cifsfs.c

@@ -901,30 +901,21 @@ const struct inode_operations cifs_dir_inode_ops = {
 	.setattr = cifs_setattr,
 	.symlink = cifs_symlink,
 	.mknod   = cifs_mknod,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = cifs_listxattr,
-	.removexattr = generic_removexattr,
 };
 
 const struct inode_operations cifs_file_inode_ops = {
 	.setattr = cifs_setattr,
 	.getattr = cifs_getattr,
 	.permission = cifs_permission,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = cifs_listxattr,
-	.removexattr = generic_removexattr,
 };
 
 const struct inode_operations cifs_symlink_inode_ops = {
 	.readlink = generic_readlink,
 	.get_link = cifs_get_link,
 	.permission = cifs_permission,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = cifs_listxattr,
-	.removexattr = generic_removexattr,
 };
 
 static int cifs_clone_file_range(struct file *src_file, loff_t off,

fs/ecryptfs/ecryptfs_kernel.h

@@ -715,4 +715,6 @@ int ecryptfs_set_f_namelen(long *namelen, long lower_namelen,
 int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
 		       loff_t offset);
 
+extern const struct xattr_handler *ecryptfs_xattr_handlers[];
+
 #endif /* #ifndef ECRYPTFS_KERNEL_H */

fs/ecryptfs/inode.c

@@ -1005,15 +1005,14 @@ ecryptfs_setxattr(struct dentry *dentry, struct inode *inode,
 		  const char *name, const void *value,
 		  size_t size, int flags)
 {
-	int rc = 0;
+	int rc;
 	struct dentry *lower_dentry;
 
 	lower_dentry = ecryptfs_dentry_to_lower(dentry);
-	if (!d_inode(lower_dentry)->i_op->setxattr) {
+	if (!(d_inode(lower_dentry)->i_opflags & IOP_XATTR)) {
 		rc = -EOPNOTSUPP;
 		goto out;
 	}
-
 	rc = vfs_setxattr(lower_dentry, name, value, size, flags);
 	if (!rc && inode)
 		fsstack_copy_attr_all(inode, d_inode(lower_dentry));
@@ -1025,15 +1024,14 @@ ssize_t
 ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode,
 			const char *name, void *value, size_t size)
 {
-	int rc = 0;
+	int rc;
 
-	if (!lower_inode->i_op->getxattr) {
+	if (!(lower_inode->i_opflags & IOP_XATTR)) {
 		rc = -EOPNOTSUPP;
 		goto out;
 	}
 	inode_lock(lower_inode);
-	rc = lower_inode->i_op->getxattr(lower_dentry, lower_inode,
+	rc = __vfs_getxattr(lower_dentry, lower_inode, name, value, size);
-					 name, value, size);
 	inode_unlock(lower_inode);
 out:
 	return rc;
@@ -1066,19 +1064,22 @@ out:
 	return rc;
 }
 
-static int ecryptfs_removexattr(struct dentry *dentry, const char *name)
+static int ecryptfs_removexattr(struct dentry *dentry, struct inode *inode,
+				const char *name)
 {
-	int rc = 0;
+	int rc;
 	struct dentry *lower_dentry;
+	struct inode *lower_inode;
 
 	lower_dentry = ecryptfs_dentry_to_lower(dentry);
-	if (!d_inode(lower_dentry)->i_op->removexattr) {
+	lower_inode = ecryptfs_inode_to_lower(inode);
+	if (!(lower_inode->i_opflags & IOP_XATTR)) {
 		rc = -EOPNOTSUPP;
 		goto out;
 	}
-	inode_lock(d_inode(lower_dentry));
+	inode_lock(lower_inode);
-	rc = d_inode(lower_dentry)->i_op->removexattr(lower_dentry, name);
+	rc = __vfs_removexattr(lower_dentry, name);
-	inode_unlock(d_inode(lower_dentry));
+	inode_unlock(lower_inode);
 out:
 	return rc;
 }
@@ -1089,10 +1090,7 @@ const struct inode_operations ecryptfs_symlink_iops = {
 	.permission = ecryptfs_permission,
 	.setattr = ecryptfs_setattr,
 	.getattr = ecryptfs_getattr_link,
-	.setxattr = ecryptfs_setxattr,
-	.getxattr = ecryptfs_getxattr,
 	.listxattr = ecryptfs_listxattr,
-	.removexattr = ecryptfs_removexattr
 };
 
 const struct inode_operations ecryptfs_dir_iops = {
@@ -1107,18 +1105,43 @@ const struct inode_operations ecryptfs_dir_iops = {
 	.rename = ecryptfs_rename,
 	.permission = ecryptfs_permission,
 	.setattr = ecryptfs_setattr,
-	.setxattr = ecryptfs_setxattr,
-	.getxattr = ecryptfs_getxattr,
 	.listxattr = ecryptfs_listxattr,
-	.removexattr = ecryptfs_removexattr
 };
 
 const struct inode_operations ecryptfs_main_iops = {
 	.permission = ecryptfs_permission,
 	.setattr = ecryptfs_setattr,
 	.getattr = ecryptfs_getattr,
-	.setxattr = ecryptfs_setxattr,
-	.getxattr = ecryptfs_getxattr,
 	.listxattr = ecryptfs_listxattr,
-	.removexattr = ecryptfs_removexattr
+};
+
+static int ecryptfs_xattr_get(const struct xattr_handler *handler,
+			      struct dentry *dentry, struct inode *inode,
+			      const char *name, void *buffer, size_t size)
+{
+	return ecryptfs_getxattr(dentry, inode, name, buffer, 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)
+{
+	if (value)
+		return ecryptfs_setxattr(dentry, inode, name, value, size, flags);
+	else {
+		BUG_ON(flags != XATTR_REPLACE);
+		return ecryptfs_removexattr(dentry, inode, name);
+	}
+}
+
+const struct xattr_handler ecryptfs_xattr_handler = {
+	.prefix = "",  /* match anything */
+	.get = ecryptfs_xattr_get,
+	.set = ecryptfs_xattr_set,
+};
+
+const struct xattr_handler *ecryptfs_xattr_handlers[] = {
+	&ecryptfs_xattr_handler,
+	NULL
 };

fs/ecryptfs/main.c

@@ -529,6 +529,7 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
 	/* ->kill_sb() will take care of sbi after that point */
 	sbi = NULL;
 	s->s_op = &ecryptfs_sops;
+	s->s_xattr = ecryptfs_xattr_handlers;
 	s->s_d_op = &ecryptfs_dops;
 
 	err = "Reading sb failed";

fs/ecryptfs/mmap.c

@@ -32,6 +32,7 @@
 #include <linux/file.h>
 #include <linux/scatterlist.h>
 #include <linux/slab.h>
+#include <linux/xattr.h>
 #include <asm/unaligned.h>
 #include "ecryptfs_kernel.h"
 
@@ -422,7 +423,7 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
 	struct inode *lower_inode = d_inode(lower_dentry);
 	int rc;
 
-	if (!lower_inode->i_op->getxattr || !lower_inode->i_op->setxattr) {
+	if (!(lower_inode->i_opflags & IOP_XATTR)) {
 		printk(KERN_WARNING
 		       "No support for setting xattr in lower filesystem\n");
 		rc = -ENOSYS;
@@ -436,14 +437,12 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
 		goto out;
 	}
 	inode_lock(lower_inode);
-	size = lower_inode->i_op->getxattr(lower_dentry, lower_inode,
+	size = __vfs_getxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
-					   ECRYPTFS_XATTR_NAME,
 			      xattr_virt, PAGE_SIZE);
 	if (size < 0)
 		size = 8;
 	put_unaligned_be64(i_size_read(ecryptfs_inode), xattr_virt);
-	rc = lower_inode->i_op->setxattr(lower_dentry, lower_inode,
+	rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
-					 ECRYPTFS_XATTR_NAME,
 			    xattr_virt, size, 0);
 	inode_unlock(lower_inode);
 	if (rc)

fs/ext2/file.c

@@ -241,10 +241,7 @@ const struct file_operations ext2_file_operations = {
 
 const struct inode_operations ext2_file_inode_operations = {
 #ifdef CONFIG_EXT2_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext2_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 	.setattr	= ext2_setattr,
 	.get_acl	= ext2_get_acl,

fs/ext2/namei.c

@@ -428,10 +428,7 @@ const struct inode_operations ext2_dir_inode_operations = {
 	.mknod		= ext2_mknod,
 	.rename		= ext2_rename,
 #ifdef CONFIG_EXT2_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext2_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 	.setattr	= ext2_setattr,
 	.get_acl	= ext2_get_acl,
@@ -441,10 +438,7 @@ const struct inode_operations ext2_dir_inode_operations = {
 
 const struct inode_operations ext2_special_inode_operations = {
 #ifdef CONFIG_EXT2_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext2_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 	.setattr	= ext2_setattr,
 	.get_acl	= ext2_get_acl,

fs/ext2/symlink.c

@@ -25,10 +25,7 @@ const struct inode_operations ext2_symlink_inode_operations = {
 	.get_link	= page_get_link,
 	.setattr	= ext2_setattr,
 #ifdef CONFIG_EXT2_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext2_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };
  
@@ -37,9 +34,6 @@ const struct inode_operations ext2_fast_symlink_inode_operations = {
 	.get_link	= simple_get_link,
 	.setattr	= ext2_setattr,
 #ifdef CONFIG_EXT2_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext2_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };

fs/ext4/file.c

@@ -706,10 +706,7 @@ const struct file_operations ext4_file_operations = {
 const struct inode_operations ext4_file_inode_operations = {
 	.setattr	= ext4_setattr,
 	.getattr	= ext4_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext4_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= ext4_get_acl,
 	.set_acl	= ext4_set_acl,
 	.fiemap		= ext4_fiemap,

fs/ext4/namei.c

@@ -3880,10 +3880,7 @@ const struct inode_operations ext4_dir_inode_operations = {
 	.tmpfile	= ext4_tmpfile,
 	.rename2	= ext4_rename2,
 	.setattr	= ext4_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext4_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= ext4_get_acl,
 	.set_acl	= ext4_set_acl,
 	.fiemap         = ext4_fiemap,
@@ -3891,10 +3888,7 @@ const struct inode_operations ext4_dir_inode_operations = {
 
 const struct inode_operations ext4_special_inode_operations = {
 	.setattr	= ext4_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext4_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= ext4_get_acl,
 	.set_acl	= ext4_set_acl,
 };

fs/ext4/symlink.c

@@ -86,28 +86,19 @@ const struct inode_operations ext4_encrypted_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= ext4_encrypted_get_link,
 	.setattr	= ext4_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext4_listxattr,
-	.removexattr	= generic_removexattr,
 };
 
 const struct inode_operations ext4_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= page_get_link,
 	.setattr	= ext4_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext4_listxattr,
-	.removexattr	= generic_removexattr,
 };
 
 const struct inode_operations ext4_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= simple_get_link,
 	.setattr	= ext4_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ext4_listxattr,
-	.removexattr	= generic_removexattr,
 };

fs/f2fs/file.c

@@ -732,10 +732,7 @@ const struct inode_operations f2fs_file_inode_operations = {
 	.get_acl	= f2fs_get_acl,
 	.set_acl	= f2fs_set_acl,
 #ifdef CONFIG_F2FS_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= f2fs_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 	.fiemap		= f2fs_fiemap,
 };

fs/f2fs/namei.c

@@ -1080,10 +1080,7 @@ const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
 	.getattr	= f2fs_getattr,
 	.setattr	= f2fs_setattr,
 #ifdef CONFIG_F2FS_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= f2fs_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };
 
@@ -1103,10 +1100,7 @@ const struct inode_operations f2fs_dir_inode_operations = {
 	.get_acl	= f2fs_get_acl,
 	.set_acl	= f2fs_set_acl,
 #ifdef CONFIG_F2FS_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= f2fs_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };
 
@@ -1116,10 +1110,7 @@ const struct inode_operations f2fs_symlink_inode_operations = {
 	.getattr	= f2fs_getattr,
 	.setattr	= f2fs_setattr,
 #ifdef CONFIG_F2FS_FS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= f2fs_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };
 
@@ -1129,9 +1120,6 @@ const struct inode_operations f2fs_special_inode_operations = {
 	.get_acl	= f2fs_get_acl,
 	.set_acl	= f2fs_set_acl,
 #ifdef CONFIG_F2FS_FS_XATTR
-	.setxattr       = generic_setxattr,
-	.getxattr       = generic_getxattr,
 	.listxattr	= f2fs_listxattr,
-	.removexattr    = generic_removexattr,
 #endif
 };

fs/fuse/dir.c

@@ -1801,10 +1801,7 @@ static const struct inode_operations fuse_dir_inode_operations = {
 	.mknod		= fuse_mknod,
 	.permission	= fuse_permission,
 	.getattr	= fuse_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= fuse_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= fuse_get_acl,
 	.set_acl	= fuse_set_acl,
 };
@@ -1824,10 +1821,7 @@ static const struct inode_operations fuse_common_inode_operations = {
 	.setattr	= fuse_setattr,
 	.permission	= fuse_permission,
 	.getattr	= fuse_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= fuse_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= fuse_get_acl,
 	.set_acl	= fuse_set_acl,
 };
@@ -1837,10 +1831,7 @@ static const struct inode_operations fuse_symlink_inode_operations = {
 	.get_link	= fuse_get_link,
 	.readlink	= generic_readlink,
 	.getattr	= fuse_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= fuse_listxattr,
-	.removexattr	= generic_removexattr,
 };
 
 void fuse_init_common(struct inode *inode)

fs/gfs2/inode.c

@@ -2040,10 +2040,7 @@ const struct inode_operations gfs2_file_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = gfs2_listxattr,
-	.removexattr = generic_removexattr,
 	.fiemap = gfs2_fiemap,
 	.get_acl = gfs2_get_acl,
 	.set_acl = gfs2_set_acl,
@@ -2062,10 +2059,7 @@ const struct inode_operations gfs2_dir_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = gfs2_listxattr,
-	.removexattr = generic_removexattr,
 	.fiemap = gfs2_fiemap,
 	.get_acl = gfs2_get_acl,
 	.set_acl = gfs2_set_acl,
@@ -2078,10 +2072,7 @@ const struct inode_operations gfs2_symlink_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = gfs2_listxattr,
-	.removexattr = generic_removexattr,
 	.fiemap = gfs2_fiemap,
 };
 

fs/hfs/attr.c

@@ -13,9 +13,13 @@
 #include "hfs_fs.h"
 #include "btree.h"
 
-int hfs_setxattr(struct dentry *unused, struct inode *inode,
+enum hfs_xattr_type {
-		 const char *name, const void *value,
+	HFS_TYPE,
-		 size_t size, int flags)
+	HFS_CREATOR,
+};
+
+static int __hfs_setxattr(struct inode *inode, enum hfs_xattr_type type,
+			  const void *value, size_t size, int flags)
 {
 	struct hfs_find_data fd;
 	hfs_cat_rec rec;
@@ -36,18 +40,22 @@ int hfs_setxattr(struct dentry *unused, struct inode *inode,
 			sizeof(struct hfs_cat_file));
 	file = &rec.file;
 
-	if (!strcmp(name, "hfs.type")) {
+	switch (type) {
+	case HFS_TYPE:
 		if (size == 4)
 			memcpy(&file->UsrWds.fdType, value, 4);
 		else
 			res = -ERANGE;
-	} else if (!strcmp(name, "hfs.creator")) {
+		break;
+
+	case HFS_CREATOR:
 		if (size == 4)
 			memcpy(&file->UsrWds.fdCreator, value, 4);
 		else
 			res = -ERANGE;
-	} else
+		break;
-		res = -EOPNOTSUPP;
+	}
+
 	if (!res)
 		hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
 				sizeof(struct hfs_cat_file));
@@ -56,8 +64,8 @@ out:
 	return res;
 }
 
-ssize_t hfs_getxattr(struct dentry *unused, struct inode *inode,
+static ssize_t __hfs_getxattr(struct inode *inode, enum hfs_xattr_type type,
-		     const char *name, void *value, size_t size)
+			      void *value, size_t size)
 {
 	struct hfs_find_data fd;
 	hfs_cat_rec rec;
@@ -80,41 +88,64 @@ ssize_t hfs_getxattr(struct dentry *unused, struct inode *inode,
 	}
 	file = &rec.file;
 
-	if (!strcmp(name, "hfs.type")) {
+	switch (type) {
+	case HFS_TYPE:
 		if (size >= 4) {
 			memcpy(value, &file->UsrWds.fdType, 4);
 			res = 4;
 		} else
 			res = size ? -ERANGE : 4;
-	} else if (!strcmp(name, "hfs.creator")) {
+		break;
+
+	case HFS_CREATOR:
 		if (size >= 4) {
 			memcpy(value, &file->UsrWds.fdCreator, 4);
 			res = 4;
 		} else
 			res = size ? -ERANGE : 4;
-	} else
+		break;
-		res = -ENODATA;
+	}
+
 out:
 	if (size)
 		hfs_find_exit(&fd);
 	return res;
 }
 
-#define HFS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type"))
+static int hfs_xattr_get(const struct xattr_handler *handler,
-
+			 struct dentry *unused, struct inode *inode,
-ssize_t hfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
+			 const char *name, void *value, size_t size)
 {
-	struct inode *inode = d_inode(dentry);
+	return __hfs_getxattr(inode, handler->flags, value, size);
+}
 
-	if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
+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)
+{
+	if (!value)
 		return -EOPNOTSUPP;
 
-	if (!buffer || !size)
+	return __hfs_setxattr(inode, handler->flags, value, size, flags);
-		return HFS_ATTRLIST_SIZE;
-	if (size < HFS_ATTRLIST_SIZE)
-		return -ERANGE;
-	strcpy(buffer, "hfs.type");
-	strcpy(buffer + sizeof("hfs.type"), "hfs.creator");
-
-	return HFS_ATTRLIST_SIZE;
 }
+
+static const struct xattr_handler hfs_creator_handler = {
+	.name = "hfs.creator",
+	.flags = HFS_CREATOR,
+	.get = hfs_xattr_get,
+	.set = hfs_xattr_set,
+};
+
+static const struct xattr_handler hfs_type_handler = {
+	.name = "hfs.type",
+	.flags = HFS_TYPE,
+	.get = hfs_xattr_get,
+	.set = hfs_xattr_set,
+};
+
+const struct xattr_handler *hfs_xattr_handlers[] = {
+	&hfs_creator_handler,
+	&hfs_type_handler,
+	NULL
+};

fs/hfs/hfs_fs.h

@@ -212,11 +212,7 @@ extern void hfs_evict_inode(struct inode *);
 extern void hfs_delete_inode(struct inode *);
 
 /* attr.c */
-extern int hfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
+extern const struct xattr_handler *hfs_xattr_handlers[];
-			const void *value, size_t size, int flags);
-extern ssize_t hfs_getxattr(struct dentry *dentry, struct inode *inode,
-			    const char *name, void *value, size_t size);
-extern ssize_t hfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
 
 /* mdb.c */
 extern int hfs_mdb_get(struct super_block *);

fs/hfs/inode.c

@@ -15,6 +15,7 @@
 #include <linux/mpage.h>
 #include <linux/sched.h>
 #include <linux/uio.h>
+#include <linux/xattr.h>
 
 #include "hfs_fs.h"
 #include "btree.h"
@@ -687,7 +688,5 @@ static const struct file_operations hfs_file_operations = {
 static const struct inode_operations hfs_file_inode_operations = {
 	.lookup		= hfs_file_lookup,
 	.setattr	= hfs_inode_setattr,
-	.setxattr	= hfs_setxattr,
+	.listxattr	= generic_listxattr,
-	.getxattr	= hfs_getxattr,
-	.listxattr	= hfs_listxattr,
 };

fs/hfs/super.c

@@ -406,6 +406,7 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
 	}
 
 	sb->s_op = &hfs_super_operations;
+	sb->s_xattr = hfs_xattr_handlers;
 	sb->s_flags |= MS_NODIRATIME;
 	mutex_init(&sbi->bitmap_lock);
 

fs/hfsplus/dir.c

@@ -562,10 +562,7 @@ const struct inode_operations hfsplus_dir_inode_operations = {
 	.symlink		= hfsplus_symlink,
 	.mknod			= hfsplus_mknod,
 	.rename			= hfsplus_rename,
-	.setxattr		= generic_setxattr,
-	.getxattr		= generic_getxattr,
 	.listxattr		= hfsplus_listxattr,
-	.removexattr		= generic_removexattr,
 #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
 	.get_acl		= hfsplus_get_posix_acl,
 	.set_acl		= hfsplus_set_posix_acl,

fs/hfsplus/inode.c

@@ -333,10 +333,7 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
 
 static const struct inode_operations hfsplus_file_inode_operations = {
 	.setattr	= hfsplus_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= hfsplus_listxattr,
-	.removexattr	= generic_removexattr,
 #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
 	.get_acl	= hfsplus_get_posix_acl,
 	.set_acl	= hfsplus_set_posix_acl,

fs/inode.c

@@ -140,6 +140,8 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
 	inode->i_fop = &no_open_fops;
 	inode->__i_nlink = 1;
 	inode->i_opflags = 0;
+	if (sb->s_xattr)
+		inode->i_opflags |= IOP_XATTR;
 	i_uid_write(inode, 0);
 	i_gid_write(inode, 0);
 	atomic_set(&inode->i_writecount, 0);

fs/jffs2/dir.c

@@ -61,10 +61,7 @@ const struct inode_operations jffs2_dir_inode_operations =
 	.get_acl =	jffs2_get_acl,
 	.set_acl =	jffs2_set_acl,
 	.setattr =	jffs2_setattr,
-	.setxattr =	jffs2_setxattr,
-	.getxattr =	jffs2_getxattr,
 	.listxattr =	jffs2_listxattr,
-	.removexattr =	jffs2_removexattr
 };
 
 /***********************************************************************/

fs/jffs2/file.c

@@ -66,10 +66,7 @@ const struct inode_operations jffs2_file_inode_operations =
 	.get_acl =	jffs2_get_acl,
 	.set_acl =	jffs2_set_acl,
 	.setattr =	jffs2_setattr,
-	.setxattr =	jffs2_setxattr,
-	.getxattr =	jffs2_getxattr,
 	.listxattr =	jffs2_listxattr,
-	.removexattr =	jffs2_removexattr
 };
 
 const struct address_space_operations jffs2_file_address_operations =

fs/jffs2/symlink.c

@@ -16,8 +16,5 @@ const struct inode_operations jffs2_symlink_inode_operations =
 	.readlink =	generic_readlink,
 	.get_link =	simple_get_link,
 	.setattr =	jffs2_setattr,
-	.setxattr =	jffs2_setxattr,
-	.getxattr =	jffs2_getxattr,
 	.listxattr =	jffs2_listxattr,
-	.removexattr =	jffs2_removexattr
 };

fs/jffs2/xattr.h

@@ -99,9 +99,6 @@ extern const struct xattr_handler jffs2_user_xattr_handler;
 extern const struct xattr_handler jffs2_trusted_xattr_handler;
 
 extern ssize_t jffs2_listxattr(struct dentry *, char *, size_t);
-#define jffs2_getxattr		generic_getxattr
-#define jffs2_setxattr		generic_setxattr
-#define jffs2_removexattr	generic_removexattr
 
 #else
 
@@ -116,9 +113,6 @@ extern ssize_t jffs2_listxattr(struct dentry *, char *, size_t);
 
 #define jffs2_xattr_handlers	NULL
 #define jffs2_listxattr		NULL
-#define jffs2_getxattr		NULL
-#define jffs2_setxattr		NULL
-#define jffs2_removexattr	NULL
 
 #endif /* CONFIG_JFFS2_FS_XATTR */
 

fs/jfs/file.c

@@ -140,10 +140,7 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
 }
 
 const struct inode_operations jfs_file_inode_operations = {
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= jfs_listxattr,
-	.removexattr	= generic_removexattr,
 	.setattr	= jfs_setattr,
 #ifdef CONFIG_JFS_POSIX_ACL
 	.get_acl	= jfs_get_acl,

fs/jfs/namei.c

@@ -1537,10 +1537,7 @@ const struct inode_operations jfs_dir_inode_operations = {
 	.rmdir		= jfs_rmdir,
 	.mknod		= jfs_mknod,
 	.rename		= jfs_rename,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= jfs_listxattr,
-	.removexattr	= generic_removexattr,
 	.setattr	= jfs_setattr,
 #ifdef CONFIG_JFS_POSIX_ACL
 	.get_acl	= jfs_get_acl,

fs/jfs/symlink.c

@@ -25,19 +25,13 @@ const struct inode_operations jfs_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= simple_get_link,
 	.setattr	= jfs_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= jfs_listxattr,
-	.removexattr	= generic_removexattr,
 };
 
 const struct inode_operations jfs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= page_get_link,
 	.setattr	= jfs_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= jfs_listxattr,
-	.removexattr	= generic_removexattr,
 };
 

fs/kernfs/dir.c

@@ -1126,9 +1126,6 @@ const struct inode_operations kernfs_dir_iops = {
 	.permission	= kernfs_iop_permission,
 	.setattr	= kernfs_iop_setattr,
 	.getattr	= kernfs_iop_getattr,
-	.setxattr	= kernfs_iop_setxattr,
-	.removexattr	= kernfs_iop_removexattr,
-	.getxattr	= kernfs_iop_getxattr,
 	.listxattr	= kernfs_iop_listxattr,
 
 	.mkdir		= kernfs_iop_mkdir,

fs/kernfs/inode.c

@@ -28,9 +28,6 @@ static const struct inode_operations kernfs_iops = {
 	.permission	= kernfs_iop_permission,
 	.setattr	= kernfs_iop_setattr,
 	.getattr	= kernfs_iop_getattr,
-	.setxattr	= kernfs_iop_setxattr,
-	.removexattr	= kernfs_iop_removexattr,
-	.getxattr	= kernfs_iop_getxattr,
 	.listxattr	= kernfs_iop_listxattr,
 };
 
@@ -138,17 +135,12 @@ out:
 	return error;
 }
 
-static int kernfs_node_setsecdata(struct kernfs_node *kn, void **secdata,
+static int kernfs_node_setsecdata(struct kernfs_iattrs *attrs, void **secdata,
 				  u32 *secdata_len)
 {
-	struct kernfs_iattrs *attrs;
 	void *old_secdata;
 	size_t old_secdata_len;
 
-	attrs = kernfs_iattrs(kn);
-	if (!attrs)
-		return -ENOMEM;
-
 	old_secdata = attrs->ia_secdata;
 	old_secdata_len = attrs->ia_secdata_len;
 
@@ -160,71 +152,6 @@ static int kernfs_node_setsecdata(struct kernfs_node *kn, void **secdata,
 	return 0;
 }
 
-int kernfs_iop_setxattr(struct dentry *unused, struct inode *inode,
-			const char *name, const void *value,
-			size_t size, int flags)
-{
-	struct kernfs_node *kn = inode->i_private;
-	struct kernfs_iattrs *attrs;
-	void *secdata;
-	int error;
-	u32 secdata_len = 0;
-
-	attrs = kernfs_iattrs(kn);
-	if (!attrs)
-		return -ENOMEM;
-
-	if (!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN)) {
-		const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
-		error = security_inode_setsecurity(inode, suffix,
-						value, size, flags);
-		if (error)
-			return error;
-		error = security_inode_getsecctx(inode,
-						&secdata, &secdata_len);
-		if (error)
-			return error;
-
-		mutex_lock(&kernfs_mutex);
-		error = kernfs_node_setsecdata(kn, &secdata, &secdata_len);
-		mutex_unlock(&kernfs_mutex);
-
-		if (secdata)
-			security_release_secctx(secdata, secdata_len);
-		return error;
-	} else if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) {
-		return simple_xattr_set(&attrs->xattrs, name, value, size,
-					flags);
-	}
-
-	return -EINVAL;
-}
-
-int kernfs_iop_removexattr(struct dentry *dentry, const char *name)
-{
-	struct kernfs_node *kn = dentry->d_fsdata;
-	struct kernfs_iattrs *attrs;
-
-	attrs = kernfs_iattrs(kn);
-	if (!attrs)
-		return -ENOMEM;
-
-	return simple_xattr_set(&attrs->xattrs, name, NULL, 0, XATTR_REPLACE);
-}
-
-ssize_t kernfs_iop_getxattr(struct dentry *unused, struct inode *inode,
-			    const char *name, void *buf, size_t size)
-{
-	struct kernfs_node *kn = inode->i_private;
-	struct kernfs_iattrs *attrs;
-
-	attrs = kernfs_iattrs(kn);
-	if (!attrs)
-		return -ENOMEM;
-
-	return simple_xattr_get(&attrs->xattrs, name, buf, size);
-}
-
 ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size)
 {
 	struct kernfs_node *kn = dentry->d_fsdata;
@@ -376,3 +303,83 @@ int kernfs_iop_permission(struct inode *inode, int mask)
 
 	return generic_permission(inode, mask);
 }
+
+static int kernfs_xattr_get(const struct xattr_handler *handler,
+			    struct dentry *unused, struct inode *inode,
+			    const char *suffix, void *value, size_t size)
+{
+	const char *name = xattr_full_name(handler, suffix);
+	struct kernfs_node *kn = inode->i_private;
+	struct kernfs_iattrs *attrs;
+
+	attrs = kernfs_iattrs(kn);
+	if (!attrs)
+		return -ENOMEM;
+
+	return simple_xattr_get(&attrs->xattrs, name, value, size);
+}
+
+static int kernfs_xattr_set(const struct xattr_handler *handler,
+			    struct dentry *unused, struct inode *inode,
+			    const char *suffix, const void *value,
+			    size_t size, int flags)
+{
+	const char *name = xattr_full_name(handler, suffix);
+	struct kernfs_node *kn = inode->i_private;
+	struct kernfs_iattrs *attrs;
+
+	attrs = kernfs_iattrs(kn);
+	if (!attrs)
+		return -ENOMEM;
+
+	return simple_xattr_set(&attrs->xattrs, name, value, size, flags);
+}
+
+const struct xattr_handler kernfs_trusted_xattr_handler = {
+	.prefix = XATTR_TRUSTED_PREFIX,
+	.get = kernfs_xattr_get,
+	.set = kernfs_xattr_set,
+};
+
+static int kernfs_security_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 kernfs_node *kn = inode->i_private;
+	struct kernfs_iattrs *attrs;
+	void *secdata;
+	u32 secdata_len = 0;
+	int error;
+
+	attrs = kernfs_iattrs(kn);
+	if (!attrs)
+		return -ENOMEM;
+
+	error = security_inode_setsecurity(inode, suffix, value, size, flags);
+	if (error)
+		return error;
+	error = security_inode_getsecctx(inode, &secdata, &secdata_len);
+	if (error)
+		return error;
+
+	mutex_lock(&kernfs_mutex);
+	error = kernfs_node_setsecdata(attrs, &secdata, &secdata_len);
+	mutex_unlock(&kernfs_mutex);
+
+	if (secdata)
+		security_release_secctx(secdata, secdata_len);
+	return error;
+}
+
+const struct xattr_handler kernfs_security_xattr_handler = {
+	.prefix = XATTR_SECURITY_PREFIX,
+	.get = kernfs_xattr_get,
+	.set = kernfs_security_xattr_set,
+};
+
+const struct xattr_handler *kernfs_xattr_handlers[] = {
+	&kernfs_trusted_xattr_handler,
+	&kernfs_security_xattr_handler,
+	NULL
+};

fs/kernfs/kernfs-internal.h

@@ -76,17 +76,12 @@ extern struct kmem_cache *kernfs_node_cache;
 /*
  * inode.c
  */
+extern const struct xattr_handler *kernfs_xattr_handlers[];
 void kernfs_evict_inode(struct inode *inode);
 int kernfs_iop_permission(struct inode *inode, int mask);
 int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr);
 int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry,
 		       struct kstat *stat);
-int kernfs_iop_setxattr(struct dentry *dentry, struct inode *inode,
-			const char *name, const void *value,
-			size_t size, int flags);
-int kernfs_iop_removexattr(struct dentry *dentry, const char *name);
-ssize_t kernfs_iop_getxattr(struct dentry *dentry, struct inode *inode,
-			    const char *name, void *buf, size_t size);
 ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size);
 
 /*

fs/kernfs/mount.c

@@ -158,6 +158,7 @@ static int kernfs_fill_super(struct super_block *sb, unsigned long magic)
 	sb->s_blocksize_bits = PAGE_SHIFT;
 	sb->s_magic = magic;
 	sb->s_op = &kernfs_sops;
+	sb->s_xattr = kernfs_xattr_handlers;
 	sb->s_time_gran = 1;
 
 	/* get root inode, initialize and unlock it */

fs/kernfs/symlink.c

@@ -134,9 +134,6 @@ static const char *kernfs_iop_get_link(struct dentry *dentry,
 }
 
 const struct inode_operations kernfs_symlink_iops = {
-	.setxattr	= kernfs_iop_setxattr,
-	.removexattr	= kernfs_iop_removexattr,
-	.getxattr	= kernfs_iop_getxattr,
 	.listxattr	= kernfs_iop_listxattr,
 	.readlink	= generic_readlink,
 	.get_link	= kernfs_iop_get_link,

fs/libfs.c

@@ -236,8 +236,8 @@ static const struct super_operations simple_super_operations = {
  * Common helper for pseudo-filesystems (sockfs, pipefs, bdev - stuff that
  * will never be mountable)
  */
-struct dentry *mount_pseudo(struct file_system_type *fs_type, char *name,
+struct dentry *mount_pseudo_xattr(struct file_system_type *fs_type, char *name,
-	const struct super_operations *ops,
+	const struct super_operations *ops, const struct xattr_handler **xattr,
 	const struct dentry_operations *dops, unsigned long magic)
 {
 	struct super_block *s;
@@ -254,6 +254,7 @@ struct dentry *mount_pseudo(struct file_system_type *fs_type, char *name,
 	s->s_blocksize_bits = PAGE_SHIFT;
 	s->s_magic = magic;
 	s->s_op = ops ? ops : &simple_super_operations;
+	s->s_xattr = xattr;
 	s->s_time_gran = 1;
 	root = new_inode(s);
 	if (!root)
@@ -281,7 +282,7 @@ Enomem:
 	deactivate_locked_super(s);
 	return ERR_PTR(-ENOMEM);
 }
-EXPORT_SYMBOL(mount_pseudo);
+EXPORT_SYMBOL(mount_pseudo_xattr);
 
 int simple_open(struct inode *inode, struct file *file)
 {
@@ -1149,24 +1150,6 @@ static int empty_dir_setattr(struct dentry *dentry, struct iattr *attr)
 	return -EPERM;
 }
 
-static int empty_dir_setxattr(struct dentry *dentry, struct inode *inode,
-			      const char *name, const void *value,
-			      size_t size, int flags)
-{
-	return -EOPNOTSUPP;
-}
-
-static ssize_t empty_dir_getxattr(struct dentry *dentry, struct inode *inode,
-				  const char *name, void *value, size_t size)
-{
-	return -EOPNOTSUPP;
-}
-
-static int empty_dir_removexattr(struct dentry *dentry, const char *name)
-{
-	return -EOPNOTSUPP;
-}
-
 static ssize_t empty_dir_listxattr(struct dentry *dentry, char *list, size_t size)
 {
 	return -EOPNOTSUPP;
@@ -1177,9 +1160,6 @@ static const struct inode_operations empty_dir_inode_operations = {
 	.permission	= generic_permission,
 	.setattr	= empty_dir_setattr,
 	.getattr	= empty_dir_getattr,
-	.setxattr	= empty_dir_setxattr,
-	.getxattr	= empty_dir_getxattr,
-	.removexattr	= empty_dir_removexattr,
 	.listxattr	= empty_dir_listxattr,
 };
 
@@ -1215,6 +1195,7 @@ void make_empty_dir_inode(struct inode *inode)
 	inode->i_blocks = 0;
 
 	inode->i_op = &empty_dir_inode_operations;
+	inode->i_opflags &= ~IOP_XATTR;
 	inode->i_fop = &empty_dir_operations;
 }
 

fs/nfs/nfs3proc.c

@@ -899,9 +899,6 @@ static const struct inode_operations nfs3_dir_inode_operations = {
 	.setattr	= nfs_setattr,
 #ifdef CONFIG_NFS_V3_ACL
 	.listxattr	= nfs3_listxattr,
-	.getxattr	= generic_getxattr,
-	.setxattr	= generic_setxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= nfs3_get_acl,
 	.set_acl	= nfs3_set_acl,
 #endif
@@ -913,9 +910,6 @@ static const struct inode_operations nfs3_file_inode_operations = {
 	.setattr	= nfs_setattr,
 #ifdef CONFIG_NFS_V3_ACL
 	.listxattr	= nfs3_listxattr,
-	.getxattr	= generic_getxattr,
-	.setxattr	= generic_setxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= nfs3_get_acl,
 	.set_acl	= nfs3_set_acl,
 #endif

fs/nfs/nfs4proc.c

@@ -8941,20 +8941,14 @@ static const struct inode_operations nfs4_dir_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
-	.getxattr	= generic_getxattr,
-	.setxattr	= generic_setxattr,
 	.listxattr	= nfs4_listxattr,
-	.removexattr	= generic_removexattr,
 };
 
 static const struct inode_operations nfs4_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
-	.getxattr	= generic_getxattr,
-	.setxattr	= generic_setxattr,
 	.listxattr	= nfs4_listxattr,
-	.removexattr	= generic_removexattr,
 };
 
 const struct nfs_rpc_ops nfs_v4_clientops = {

fs/ocfs2/file.c

@@ -2444,10 +2444,7 @@ const struct inode_operations ocfs2_file_iops = {
 	.setattr	= ocfs2_setattr,
 	.getattr	= ocfs2_getattr,
 	.permission	= ocfs2_permission,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ocfs2_listxattr,
-	.removexattr	= generic_removexattr,
 	.fiemap		= ocfs2_fiemap,
 	.get_acl	= ocfs2_iop_get_acl,
 	.set_acl	= ocfs2_iop_set_acl,

fs/ocfs2/namei.c

@@ -2913,10 +2913,7 @@ const struct inode_operations ocfs2_dir_iops = {
 	.setattr	= ocfs2_setattr,
 	.getattr	= ocfs2_getattr,
 	.permission	= ocfs2_permission,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ocfs2_listxattr,
-	.removexattr	= generic_removexattr,
 	.fiemap         = ocfs2_fiemap,
 	.get_acl	= ocfs2_iop_get_acl,
 	.set_acl	= ocfs2_iop_set_acl,

fs/ocfs2/symlink.c

@@ -91,9 +91,6 @@ const struct inode_operations ocfs2_symlink_inode_operations = {
 	.get_link	= page_get_link,
 	.getattr	= ocfs2_getattr,
 	.setattr	= ocfs2_setattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ocfs2_listxattr,
-	.removexattr	= generic_removexattr,
 	.fiemap		= ocfs2_fiemap,
 };

fs/orangefs/inode.c

@@ -296,10 +296,7 @@ const struct inode_operations orangefs_file_inode_operations = {
 	.set_acl = orangefs_set_acl,
 	.setattr = orangefs_setattr,
 	.getattr = orangefs_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = orangefs_listxattr,
-	.removexattr = generic_removexattr,
 	.permission = orangefs_permission,
 };
 

fs/orangefs/namei.c

@@ -462,9 +462,6 @@ const struct inode_operations orangefs_dir_inode_operations = {
 	.rename = orangefs_rename,
 	.setattr = orangefs_setattr,
 	.getattr = orangefs_getattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
-	.removexattr = generic_removexattr,
 	.listxattr = orangefs_listxattr,
 	.permission = orangefs_permission,
 };

fs/orangefs/symlink.c

@@ -14,6 +14,5 @@ const struct inode_operations orangefs_symlink_inode_operations = {
 	.setattr = orangefs_setattr,
 	.getattr = orangefs_getattr,
 	.listxattr = orangefs_listxattr,
-	.setxattr = generic_setxattr,
 	.permission = orangefs_permission,
 };

fs/orangefs/xattr.c

@@ -73,6 +73,9 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name,
 		     "%s: name %s, buffer_size %zd\n",
 		     __func__, name, size);
 
+	if (S_ISLNK(inode->i_mode))
+		return -EOPNOTSUPP;
+
 	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) {
 		gossip_err("Invalid key length (%d)\n",
 			   (int)strlen(name));

fs/overlayfs/copy_up.c

@@ -58,8 +58,8 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
 	char *buf, *name, *value = NULL;
 	int uninitialized_var(error);
 
-	if (!old->d_inode->i_op->getxattr ||
+	if (!(old->d_inode->i_opflags & IOP_XATTR) ||
-	    !new->d_inode->i_op->getxattr)
+	    !(new->d_inode->i_opflags & IOP_XATTR))
 		return 0;
 
 	list_size = vfs_listxattr(old, NULL, 0);

fs/overlayfs/dir.c

@@ -1013,10 +1013,7 @@ const struct inode_operations ovl_dir_inode_operations = {
 	.mknod		= ovl_mknod,
 	.permission	= ovl_permission,
 	.getattr	= ovl_dir_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ovl_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= ovl_get_acl,
 	.update_time	= ovl_update_time,
 };

fs/overlayfs/inode.c

@@ -367,10 +367,7 @@ static const struct inode_operations ovl_file_inode_operations = {
 	.setattr	= ovl_setattr,
 	.permission	= ovl_permission,
 	.getattr	= ovl_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ovl_listxattr,
-	.removexattr	= generic_removexattr,
 	.get_acl	= ovl_get_acl,
 	.update_time	= ovl_update_time,
 };
@@ -380,10 +377,7 @@ static const struct inode_operations ovl_symlink_inode_operations = {
 	.get_link	= ovl_get_link,
 	.readlink	= ovl_readlink,
 	.getattr	= ovl_getattr,
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= ovl_listxattr,
-	.removexattr	= generic_removexattr,
 	.update_time	= ovl_update_time,
 };
 

fs/overlayfs/super.c

@@ -275,10 +275,10 @@ static bool ovl_is_opaquedir(struct dentry *dentry)
 	char val;
 	struct inode *inode = dentry->d_inode;
 
-	if (!S_ISDIR(inode->i_mode) || !inode->i_op->getxattr)
+	if (!S_ISDIR(inode->i_mode) || !(inode->i_opflags & IOP_XATTR))
 		return false;
 
-	res = inode->i_op->getxattr(dentry, inode, OVL_XATTR_OPAQUE, &val, 1);
+	res = __vfs_getxattr(dentry, inode, OVL_XATTR_OPAQUE, &val, 1);
 	if (res == 1 && val == 'y')
 		return true;
 

fs/reiserfs/file.c

@@ -260,10 +260,7 @@ const struct file_operations reiserfs_file_operations = {
 
 const struct inode_operations reiserfs_file_inode_operations = {
 	.setattr = reiserfs_setattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = reiserfs_listxattr,
-	.removexattr = generic_removexattr,
 	.permission = reiserfs_permission,
 	.get_acl = reiserfs_get_acl,
 	.set_acl = reiserfs_set_acl,

fs/reiserfs/namei.c

@@ -1650,10 +1650,7 @@ const struct inode_operations reiserfs_dir_inode_operations = {
 	.mknod = reiserfs_mknod,
 	.rename = reiserfs_rename,
 	.setattr = reiserfs_setattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = reiserfs_listxattr,
-	.removexattr = generic_removexattr,
 	.permission = reiserfs_permission,
 	.get_acl = reiserfs_get_acl,
 	.set_acl = reiserfs_set_acl,
@@ -1667,10 +1664,7 @@ const struct inode_operations reiserfs_symlink_inode_operations = {
 	.readlink = generic_readlink,
 	.get_link	= page_get_link,
 	.setattr = reiserfs_setattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = reiserfs_listxattr,
-	.removexattr = generic_removexattr,
 	.permission = reiserfs_permission,
 };
 
@@ -1679,10 +1673,7 @@ const struct inode_operations reiserfs_symlink_inode_operations = {
  */
 const struct inode_operations reiserfs_special_inode_operations = {
 	.setattr = reiserfs_setattr,
-	.setxattr = generic_setxattr,
-	.getxattr = generic_getxattr,
 	.listxattr = reiserfs_listxattr,
-	.removexattr = generic_removexattr,
 	.permission = reiserfs_permission,
 	.get_acl = reiserfs_get_acl,
 	.set_acl = reiserfs_set_acl,

fs/squashfs/inode.c

@@ -425,7 +425,6 @@ failed_read:
 
 
 const struct inode_operations squashfs_inode_ops = {
-	.getxattr = generic_getxattr,
 	.listxattr = squashfs_listxattr
 };
 

fs/squashfs/namei.c

@@ -247,6 +247,5 @@ failed:
 
 const struct inode_operations squashfs_dir_inode_ops = {
 	.lookup = squashfs_lookup,
-	.getxattr = generic_getxattr,
 	.listxattr = squashfs_listxattr
 };

fs/squashfs/symlink.c

@@ -120,7 +120,6 @@ const struct address_space_operations squashfs_symlink_aops = {
 const struct inode_operations squashfs_symlink_inode_ops = {
 	.readlink = generic_readlink,
 	.get_link = page_get_link,
-	.getxattr = generic_getxattr,
 	.listxattr = squashfs_listxattr
 };
 

fs/squashfs/xattr.h

@@ -42,6 +42,5 @@ static inline int squashfs_xattr_lookup(struct super_block *sb,
 	return 0;
 }
 #define squashfs_listxattr NULL
-#define generic_getxattr NULL
 #define squashfs_xattr_handlers NULL
 #endif

fs/ubifs/dir.c

@@ -1182,10 +1182,7 @@ const struct inode_operations ubifs_dir_inode_operations = {
 	.rename      = ubifs_rename,
 	.setattr     = ubifs_setattr,
 	.getattr     = ubifs_getattr,
-	.setxattr    = generic_setxattr,
-	.getxattr    = generic_getxattr,
 	.listxattr   = ubifs_listxattr,
-	.removexattr = generic_removexattr,
 #ifdef CONFIG_UBIFS_ATIME_SUPPORT
 	.update_time = ubifs_update_time,
 #endif

fs/ubifs/file.c

@@ -1621,10 +1621,7 @@ const struct address_space_operations ubifs_file_address_operations = {
 const struct inode_operations ubifs_file_inode_operations = {
 	.setattr     = ubifs_setattr,
 	.getattr     = ubifs_getattr,
-	.setxattr    = generic_setxattr,
-	.getxattr    = generic_getxattr,
 	.listxattr   = ubifs_listxattr,
-	.removexattr = generic_removexattr,
 #ifdef CONFIG_UBIFS_ATIME_SUPPORT
 	.update_time = ubifs_update_time,
 #endif
@@ -1635,10 +1632,7 @@ const struct inode_operations ubifs_symlink_inode_operations = {
 	.get_link    = simple_get_link,
 	.setattr     = ubifs_setattr,
 	.getattr     = ubifs_getattr,
-	.setxattr    = generic_setxattr,
-	.getxattr    = generic_getxattr,
 	.listxattr   = ubifs_listxattr,
-	.removexattr = generic_removexattr,
 #ifdef CONFIG_UBIFS_ATIME_SUPPORT
 	.update_time = ubifs_update_time,
 #endif

fs/xattr.c

@@ -24,6 +24,59 @@
 
 #include <asm/uaccess.h>
 
+static const char *
+strcmp_prefix(const char *a, const char *a_prefix)
+{
+	while (*a_prefix && *a == *a_prefix) {
+		a++;
+		a_prefix++;
+	}
+	return *a_prefix ? NULL : a;
+}
+
+/*
+ * In order to implement different sets of xattr operations for each xattr
+ * prefix, a filesystem should create a null-terminated array of struct
+ * xattr_handler (one for each prefix) and hang a pointer to it off of the
+ * s_xattr field of the superblock.
+ */
+#define for_each_xattr_handler(handlers, handler)		\
+	if (handlers)						\
+		for ((handler) = *(handlers)++;			\
+			(handler) != NULL;			\
+			(handler) = *(handlers)++)
+
+/*
+ * Find the xattr_handler with the matching prefix.
+ */
+static const struct xattr_handler *
+xattr_resolve_name(struct inode *inode, const char **name)
+{
+	const struct xattr_handler **handlers = inode->i_sb->s_xattr;
+	const struct xattr_handler *handler;
+
+	if (!(inode->i_opflags & IOP_XATTR)) {
+		if (unlikely(is_bad_inode(inode)))
+			return ERR_PTR(-EIO);
+		return ERR_PTR(-EOPNOTSUPP);
+	}
+	for_each_xattr_handler(handlers, handler) {
+		const char *n;
+
+		n = strcmp_prefix(*name, xattr_prefix(handler));
+		if (n) {
+			if (!handler->prefix ^ !*n) {
+				if (*n)
+					continue;
+				return ERR_PTR(-EINVAL);
+			}
+			*name = n;
+			return handler;
+		}
+	}
+	return ERR_PTR(-EOPNOTSUPP);
+}
+
 /*
  * Check permissions for extended attribute access.  This is a bit complicated
  * because different namespaces have very different rules.
@@ -80,6 +133,23 @@ xattr_permission(struct inode *inode, const char *name, int mask)
 	return inode_permission(inode, mask);
 }
 
+int
+__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
+	       const void *value, size_t size, int flags)
+{
+	const struct xattr_handler *handler;
+
+	handler = xattr_resolve_name(inode, &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);
+}
+EXPORT_SYMBOL(__vfs_setxattr);
+
 /**
  *  __vfs_setxattr_noperm - perform setxattr operation without performing
  *  permission checks.
@@ -106,8 +176,8 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
 
 	if (issec)
 		inode->i_flags &= ~S_NOSEC;
-	if (inode->i_op->setxattr) {
+	if (inode->i_opflags & IOP_XATTR) {
-		error = inode->i_op->setxattr(dentry, inode, name, value, size, flags);
+		error = __vfs_setxattr(dentry, inode, name, value, size, flags);
 		if (!error) {
 			fsnotify_xattr(dentry);
 			security_inode_post_setxattr(dentry, name, value,
@@ -115,6 +185,9 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
 		}
 	} else if (issec) {
 		const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
+
+		if (unlikely(is_bad_inode(inode)))
+			return -EIO;
 		error = security_inode_setsecurity(inode, suffix, value,
 						   size, flags);
 		if (!error)
@@ -188,6 +261,7 @@ ssize_t
 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;
 	int error;
@@ -196,10 +270,12 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
 	if (error)
 		return error;
 
-	if (!inode->i_op->getxattr)
+	handler = xattr_resolve_name(inode, &name);
+	if (IS_ERR(handler))
+		return PTR_ERR(handler);
+	if (!handler->get)
 		return -EOPNOTSUPP;
-
+	error = handler->get(handler, dentry, inode, name, NULL, 0);
-	error = inode->i_op->getxattr(dentry, inode, name, NULL, 0);
 	if (error < 0)
 		return error;
 
@@ -210,11 +286,26 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
 		memset(value, 0, error + 1);
 	}
 
-	error = inode->i_op->getxattr(dentry, inode, name, value, error);
+	error = handler->get(handler, dentry, inode, name, value, error);
 	*xattr_value = value;
 	return error;
 }
 
+ssize_t
+__vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
+	       void *value, size_t size)
+{
+	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)
 {
@@ -242,28 +333,24 @@ vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
 		return ret;
 	}
 nolsm:
-	if (inode->i_op->getxattr)
+	return __vfs_getxattr(dentry, inode, name, value, size);
-		error = inode->i_op->getxattr(dentry, inode, name, value, size);
-	else
-		error = -EOPNOTSUPP;
-
-	return error;
 }
 EXPORT_SYMBOL_GPL(vfs_getxattr);
 
 ssize_t
-vfs_listxattr(struct dentry *d, char *list, size_t size)
+vfs_listxattr(struct dentry *dentry, char *list, size_t size)
 {
+	struct inode *inode = d_inode(dentry);
 	ssize_t error;
 
-	error = security_inode_listxattr(d);
+	error = security_inode_listxattr(dentry);
 	if (error)
 		return error;
+	if (inode->i_op->listxattr && (inode->i_opflags & IOP_XATTR)) {
 		error = -EOPNOTSUPP;
-	if (d->d_inode->i_op->listxattr) {
+		error = inode->i_op->listxattr(dentry, list, size);
-		error = d->d_inode->i_op->listxattr(d, list, size);
 	} else {
-		error = security_inode_listsecurity(d->d_inode, list, size);
+		error = security_inode_listsecurity(inode, list, size);
 		if (size && error > size)
 			error = -ERANGE;
 	}
@@ -271,15 +358,27 @@ vfs_listxattr(struct dentry *d, char *list, size_t size)
 }
 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;
+
+	handler = xattr_resolve_name(inode, &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);
+}
+EXPORT_SYMBOL(__vfs_removexattr);
+
 int
 vfs_removexattr(struct dentry *dentry, const char *name)
 {
 	struct inode *inode = dentry->d_inode;
 	int error;
 
-	if (!inode->i_op->removexattr)
-		return -EOPNOTSUPP;
-
 	error = xattr_permission(inode, name, MAY_WRITE);
 	if (error)
 		return error;
@@ -289,7 +388,7 @@ vfs_removexattr(struct dentry *dentry, const char *name)
 	if (error)
 		goto out;
 
-	error = inode->i_op->removexattr(dentry, name);
+	error = __vfs_removexattr(dentry, name);
 
 	if (!error) {
 		fsnotify_xattr(dentry);
@@ -641,76 +740,6 @@ SYSCALL_DEFINE2(fremovexattr, int, fd, const char __user *, name)
 	return error;
 }
 
-
-static const char *
-strcmp_prefix(const char *a, const char *a_prefix)
-{
-	while (*a_prefix && *a == *a_prefix) {
-		a++;
-		a_prefix++;
-	}
-	return *a_prefix ? NULL : a;
-}
-
-/*
- * In order to implement different sets of xattr operations for each xattr
- * prefix with the generic xattr API, a filesystem should create a
- * null-terminated array of struct xattr_handler (one for each prefix) and
- * hang a pointer to it off of the s_xattr field of the superblock.
- *
- * The generic_fooxattr() functions will use this list to dispatch xattr
- * operations to the correct xattr_handler.
- */
-#define for_each_xattr_handler(handlers, handler)		\
-	if (handlers)						\
-		for ((handler) = *(handlers)++;			\
-			(handler) != NULL;			\
-			(handler) = *(handlers)++)
-
-/*
- * Find the xattr_handler with the matching prefix.
- */
-static const struct xattr_handler *
-xattr_resolve_name(const struct xattr_handler **handlers, const char **name)
-{
-	const struct xattr_handler *handler;
-
-	if (!*name)
-		return ERR_PTR(-EINVAL);
-
-	for_each_xattr_handler(handlers, handler) {
-		const char *n;
-
-		n = strcmp_prefix(*name, xattr_prefix(handler));
-		if (n) {
-			if (!handler->prefix ^ !*n) {
-				if (*n)
-					continue;
-				return ERR_PTR(-EINVAL);
-			}
-			*name = n;
-			return handler;
-		}
-	}
-	return ERR_PTR(-EOPNOTSUPP);
-}
-
-/*
- * Find the handler for the prefix and dispatch its get() operation.
- */
-ssize_t
-generic_getxattr(struct dentry *dentry, struct inode *inode,
-		 const char *name, void *buffer, size_t size)
-{
-	const struct xattr_handler *handler;
-
-	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
-	if (IS_ERR(handler))
-		return PTR_ERR(handler);
-	return handler->get(handler, dentry, inode,
-			    name, buffer, size);
-}
-
 /*
  * Combine the results of the list() operation from every xattr_handler in the
  * list.
@@ -747,44 +776,7 @@ generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 	}
 	return size;
 }
-
-/*
- * Find the handler for the prefix and dispatch its set() operation.
- */
-int
-generic_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
-		 const void *value, size_t size, int flags)
-{
-	const struct xattr_handler *handler;
-
-	if (size == 0)
-		value = "";  /* empty EA, do not remove */
-	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
-	if (IS_ERR(handler))
-		return PTR_ERR(handler);
-	return handler->set(handler, dentry, inode, name, value, size, flags);
-}
-
-/*
- * Find the handler for the prefix and dispatch its set() operation to remove
- * any associated extended attribute.
- */
-int
-generic_removexattr(struct dentry *dentry, const char *name)
-{
-	const struct xattr_handler *handler;
-
-	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
-	if (IS_ERR(handler))
-		return PTR_ERR(handler);
-	return handler->set(handler, dentry, d_inode(dentry), name, NULL,
-			    0, XATTR_REPLACE);
-}
-
-EXPORT_SYMBOL(generic_getxattr);
 EXPORT_SYMBOL(generic_listxattr);
-EXPORT_SYMBOL(generic_setxattr);
-EXPORT_SYMBOL(generic_removexattr);
 
 /**
  * xattr_full_name  -  Compute full attribute name from suffix

fs/xfs/xfs_iops.c

@@ -1066,9 +1066,6 @@ static const struct inode_operations xfs_inode_operations = {
 	.set_acl		= xfs_set_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
-	.setxattr		= generic_setxattr,
-	.getxattr		= generic_getxattr,
-	.removexattr		= generic_removexattr,
 	.listxattr		= xfs_vn_listxattr,
 	.fiemap			= xfs_vn_fiemap,
 	.update_time		= xfs_vn_update_time,
@@ -1094,9 +1091,6 @@ static const struct inode_operations xfs_dir_inode_operations = {
 	.set_acl		= xfs_set_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
-	.setxattr		= generic_setxattr,
-	.getxattr		= generic_getxattr,
-	.removexattr		= generic_removexattr,
 	.listxattr		= xfs_vn_listxattr,
 	.update_time		= xfs_vn_update_time,
 	.tmpfile		= xfs_vn_tmpfile,
@@ -1122,9 +1116,6 @@ static const struct inode_operations xfs_dir_ci_inode_operations = {
 	.set_acl		= xfs_set_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
-	.setxattr		= generic_setxattr,
-	.getxattr		= generic_getxattr,
-	.removexattr		= generic_removexattr,
 	.listxattr		= xfs_vn_listxattr,
 	.update_time		= xfs_vn_update_time,
 	.tmpfile		= xfs_vn_tmpfile,
@@ -1135,9 +1126,6 @@ static const struct inode_operations xfs_symlink_inode_operations = {
 	.get_link		= xfs_vn_get_link,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
-	.setxattr		= generic_setxattr,
-	.getxattr		= generic_getxattr,
-	.removexattr		= generic_removexattr,
 	.listxattr		= xfs_vn_listxattr,
 	.update_time		= xfs_vn_update_time,
 };
@@ -1147,9 +1135,6 @@ static const struct inode_operations xfs_inline_symlink_inode_operations = {
 	.get_link		= xfs_vn_get_link_inline,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
-	.setxattr		= generic_setxattr,
-	.getxattr		= generic_getxattr,
-	.removexattr		= generic_removexattr,
 	.listxattr		= xfs_vn_listxattr,
 	.update_time		= xfs_vn_update_time,
 };

include/linux/fs.h

@@ -592,6 +592,7 @@ is_uncached_acl(struct posix_acl *acl)
 #define IOP_FASTPERM	0x0001
 #define IOP_LOOKUP	0x0002
 #define IOP_NOFOLLOW	0x0004
+#define IOP_XATTR	0x0008
 
 /*
  * Keep mostly read-only and often accessed (especially for
@@ -1751,12 +1752,7 @@ struct inode_operations {
 			struct inode *, struct dentry *, unsigned int);
 	int (*setattr) (struct dentry *, struct iattr *);
 	int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
-	int (*setxattr) (struct dentry *, struct inode *,
-			 const char *, const void *, size_t, int);
-	ssize_t (*getxattr) (struct dentry *, struct inode *,
-			     const char *, void *, size_t);
 	ssize_t (*listxattr) (struct dentry *, char *, size_t);
-	int (*removexattr) (struct dentry *, const char *);
 	int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
 		      u64 len);
 	int (*update_time)(struct inode *, struct timespec *, int);
@@ -2087,11 +2083,20 @@ struct super_block *sget(struct file_system_type *type,
 			int (*test)(struct super_block *,void *),
 			int (*set)(struct super_block *,void *),
 			int flags, void *data);
-extern struct dentry *mount_pseudo(struct file_system_type *, char *,
+extern struct dentry *mount_pseudo_xattr(struct file_system_type *, char *,
 					 const struct super_operations *ops,
+					 const struct xattr_handler **xattr,
 					 const struct dentry_operations *dops,
 					 unsigned long);
 
+static inline struct dentry *
+mount_pseudo(struct file_system_type *fs_type, char *name,
+	     const struct super_operations *ops,
+	     const struct dentry_operations *dops, unsigned long magic)
+{
+	return mount_pseudo_xattr(fs_type, name, ops, NULL, dops, magic);
+}
+
 /* Alas, no aliases. Too much hassle with bringing module.h everywhere */
 #define fops_get(fops) \
 	(((fops) && try_module_get((fops)->owner) ? (fops) : NULL))

include/linux/xattr.h

@@ -46,17 +46,16 @@ struct xattr {
 };
 
 ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
+ssize_t __vfs_getxattr(struct dentry *, struct inode *, const char *, void *, size_t);
 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_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 *);
 int vfs_removexattr(struct dentry *, const char *);
 
-ssize_t generic_getxattr(struct dentry *dentry, struct inode *inode, const char *name, void *buffer, size_t size);
 ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
-int generic_setxattr(struct dentry *dentry, struct inode *inode,
-		     const char *name, const void *value, size_t size, int flags);
-int generic_removexattr(struct dentry *dentry, const char *name);
 ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name,
 			   char **xattr_value, size_t size, gfp_t flags);
 

mm/shmem.c

@@ -3175,10 +3175,7 @@ static const struct inode_operations shmem_short_symlink_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= simple_get_link,
 #ifdef CONFIG_TMPFS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= shmem_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };
 
@@ -3186,10 +3183,7 @@ static const struct inode_operations shmem_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.get_link	= shmem_get_link,
 #ifdef CONFIG_TMPFS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= shmem_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 };
 
@@ -3683,10 +3677,7 @@ static const struct inode_operations shmem_inode_operations = {
 	.getattr	= shmem_getattr,
 	.setattr	= shmem_setattr,
 #ifdef CONFIG_TMPFS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= shmem_listxattr,
-	.removexattr	= generic_removexattr,
 	.set_acl	= simple_set_acl,
 #endif
 };
@@ -3705,10 +3696,7 @@ static const struct inode_operations shmem_dir_inode_operations = {
 	.tmpfile	= shmem_tmpfile,
 #endif
 #ifdef CONFIG_TMPFS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= shmem_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 #ifdef CONFIG_TMPFS_POSIX_ACL
 	.setattr	= shmem_setattr,
@@ -3718,10 +3706,7 @@ static const struct inode_operations shmem_dir_inode_operations = {
 
 static const struct inode_operations shmem_special_inode_operations = {
 #ifdef CONFIG_TMPFS_XATTR
-	.setxattr	= generic_setxattr,
-	.getxattr	= generic_getxattr,
 	.listxattr	= shmem_listxattr,
-	.removexattr	= generic_removexattr,
 #endif
 #ifdef CONFIG_TMPFS_POSIX_ACL
 	.setattr	= shmem_setattr,

net/socket.c

@@ -320,10 +320,37 @@ static const struct dentry_operations sockfs_dentry_operations = {
 	.d_dname  = sockfs_dname,
 };
 
+static int sockfs_xattr_get(const struct xattr_handler *handler,
+			    struct dentry *dentry, struct inode *inode,
+			    const char *suffix, void *value, size_t size)
+{
+	if (value) {
+		if (dentry->d_name.len + 1 > size)
+			return -ERANGE;
+		memcpy(value, dentry->d_name.name, dentry->d_name.len + 1);
+	}
+	return dentry->d_name.len + 1;
+}
+
+#define XATTR_SOCKPROTONAME_SUFFIX "sockprotoname"
+#define XATTR_NAME_SOCKPROTONAME (XATTR_SYSTEM_PREFIX XATTR_SOCKPROTONAME_SUFFIX)
+#define XATTR_NAME_SOCKPROTONAME_LEN (sizeof(XATTR_NAME_SOCKPROTONAME)-1)
+
+static const struct xattr_handler sockfs_xattr_handler = {
+	.name = XATTR_NAME_SOCKPROTONAME,
+	.get = sockfs_xattr_get,
+};
+
+static const struct xattr_handler *sockfs_xattr_handlers[] = {
+	&sockfs_xattr_handler,
+	NULL
+};
+
 static struct dentry *sockfs_mount(struct file_system_type *fs_type,
 			 int flags, const char *dev_name, void *data)
 {
-	return mount_pseudo(fs_type, "socket:", &sockfs_ops,
+	return mount_pseudo_xattr(fs_type, "socket:", &sockfs_ops,
+				  sockfs_xattr_handlers,
 				  &sockfs_dentry_operations, SOCKFS_MAGIC);
 }
 
@@ -463,35 +490,6 @@ static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
 	return NULL;
 }
 
-#define XATTR_SOCKPROTONAME_SUFFIX "sockprotoname"
-#define XATTR_NAME_SOCKPROTONAME (XATTR_SYSTEM_PREFIX XATTR_SOCKPROTONAME_SUFFIX)
-#define XATTR_NAME_SOCKPROTONAME_LEN (sizeof(XATTR_NAME_SOCKPROTONAME)-1)
-static ssize_t sockfs_getxattr(struct dentry *dentry, struct inode *inode,
-			       const char *name, void *value, size_t size)
-{
-	const char *proto_name;
-	size_t proto_size;
-	int error;
-
-	error = -ENODATA;
-	if (!strncmp(name, XATTR_NAME_SOCKPROTONAME, XATTR_NAME_SOCKPROTONAME_LEN)) {
-		proto_name = dentry->d_name.name;
-		proto_size = strlen(proto_name);
-
-		if (value) {
-			error = -ERANGE;
-			if (proto_size + 1 > size)
-				goto out;
-
-			strncpy(value, proto_name, proto_size + 1);
-		}
-		error = proto_size + 1;
-	}
-
-out:
-	return error;
-}
-
 static ssize_t sockfs_listxattr(struct dentry *dentry, char *buffer,
 				size_t size)
 {
@@ -521,7 +519,6 @@ static ssize_t sockfs_listxattr(struct dentry *dentry, char *buffer,
 }
 
 static const struct inode_operations sockfs_inode_ops = {
-	.getxattr = sockfs_getxattr,
 	.listxattr = sockfs_listxattr,
 };
 

security/commoncap.c

@@ -310,13 +310,8 @@ int cap_inode_need_killpriv(struct dentry *dentry)
 	struct inode *inode = d_backing_inode(dentry);
 	int error;
 
-	if (!inode->i_op->getxattr)
+	error = __vfs_getxattr(dentry, inode, XATTR_NAME_CAPS, NULL, 0);
-	       return 0;
+	return error > 0;
-
-	error = inode->i_op->getxattr(dentry, inode, XATTR_NAME_CAPS, NULL, 0);
-	if (error <= 0)
-		return 0;
-	return 1;
 }
 
 /**
@@ -329,12 +324,12 @@ int cap_inode_need_killpriv(struct dentry *dentry)
  */
 int cap_inode_killpriv(struct dentry *dentry)
 {
-	struct inode *inode = d_backing_inode(dentry);
+	int error;
 
-	if (!inode->i_op->removexattr)
+	error = __vfs_removexattr(dentry, XATTR_NAME_CAPS);
-	       return 0;
+	if (error == -EOPNOTSUPP)
-
+		error = 0;
-	return inode->i_op->removexattr(dentry, XATTR_NAME_CAPS);
+	return error;
 }
 
 /*
@@ -394,10 +389,10 @@ int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data
 
 	memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
 
-	if (!inode || !inode->i_op->getxattr)
+	if (!inode)
 		return -ENODATA;
 
-	size = inode->i_op->getxattr((struct dentry *)dentry, inode,
+	size = __vfs_getxattr((struct dentry *)dentry, inode,
 			      XATTR_NAME_CAPS, &caps, XATTR_CAPS_SZ);
 	if (size == -ENODATA || size == -EOPNOTSUPP)
 		/* no data, that's ok */

security/integrity/evm/evm_crypto.c

@@ -182,8 +182,9 @@ static int evm_calc_hmac_or_hash(struct dentry *dentry,
 	int error;
 	int size;
 
-	if (!inode->i_op->getxattr)
+	if (!(inode->i_opflags & IOP_XATTR))
 		return -EOPNOTSUPP;
+
 	desc = init_desc(type);
 	if (IS_ERR(desc))
 		return PTR_ERR(desc);
@@ -253,8 +254,8 @@ int evm_update_evmxattr(struct dentry *dentry, const char *xattr_name,
 		rc = __vfs_setxattr_noperm(dentry, XATTR_NAME_EVM,
 					   &xattr_data,
 					   sizeof(xattr_data), 0);
-	} else if (rc == -ENODATA && inode->i_op->removexattr) {
+	} else if (rc == -ENODATA && (inode->i_opflags & IOP_XATTR)) {
-		rc = inode->i_op->removexattr(dentry, XATTR_NAME_EVM);
+		rc = __vfs_removexattr(dentry, XATTR_NAME_EVM);
 	}
 	return rc;
 }

security/integrity/evm/evm_main.c

@@ -78,11 +78,11 @@ static int evm_find_protected_xattrs(struct dentry *dentry)
 	int error;
 	int count = 0;
 
-	if (!inode->i_op->getxattr)
+	if (!(inode->i_opflags & IOP_XATTR))
 		return -EOPNOTSUPP;
 
 	for (xattr = evm_config_xattrnames; *xattr != NULL; xattr++) {
-		error = inode->i_op->getxattr(dentry, inode, *xattr, NULL, 0);
+		error = __vfs_getxattr(dentry, inode, *xattr, NULL, 0);
 		if (error < 0) {
 			if (error == -ENODATA)
 				continue;

security/integrity/ima/ima_appraise.c

@@ -165,13 +165,13 @@ enum hash_algo ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value,
 int ima_read_xattr(struct dentry *dentry,
 		   struct evm_ima_xattr_data **xattr_value)
 {
-	struct inode *inode = d_backing_inode(dentry);
+	ssize_t ret;
 
-	if (!inode->i_op->getxattr)
+	ret = vfs_getxattr_alloc(dentry, XATTR_NAME_IMA, (char **)xattr_value,
-		return 0;
-
-	return vfs_getxattr_alloc(dentry, XATTR_NAME_IMA, (char **)xattr_value,
 				 0, GFP_NOFS);
+	if (ret == -EOPNOTSUPP)
+		ret = 0;
+	return ret;
 }
 
 /*
@@ -195,7 +195,7 @@ int ima_appraise_measurement(enum ima_hooks func,
 	enum integrity_status status = INTEGRITY_UNKNOWN;
 	int rc = xattr_len, hash_start = 0;
 
-	if (!inode->i_op->getxattr)
+	if (!(inode->i_opflags & IOP_XATTR))
 		return INTEGRITY_UNKNOWN;
 
 	if (rc <= 0) {
@@ -322,10 +322,10 @@ void ima_inode_post_setattr(struct dentry *dentry)
 {
 	struct inode *inode = d_backing_inode(dentry);
 	struct integrity_iint_cache *iint;
-	int must_appraise, rc;
+	int must_appraise;
 
 	if (!(ima_policy_flag & IMA_APPRAISE) || !S_ISREG(inode->i_mode)
-	    || !inode->i_op->removexattr)
+	    || !(inode->i_opflags & IOP_XATTR))
 		return;
 
 	must_appraise = ima_must_appraise(inode, MAY_ACCESS, POST_SETATTR);
@@ -338,8 +338,7 @@ void ima_inode_post_setattr(struct dentry *dentry)
 			iint->flags |= IMA_APPRAISE;
 	}
 	if (!must_appraise)
-		rc = inode->i_op->removexattr(dentry, XATTR_NAME_IMA);
+		__vfs_removexattr(dentry, XATTR_NAME_IMA);
-	return;
 }
 
 /*

security/selinux/hooks.c

@@ -507,14 +507,14 @@ static int sb_finish_set_opts(struct super_block *sb)
 		   the root directory.  -ENODATA is ok, as this may be
 		   the first boot of the SELinux kernel before we have
 		   assigned xattr values to the filesystem. */
-		if (!root_inode->i_op->getxattr) {
+		if (!(root_inode->i_opflags & IOP_XATTR)) {
 			printk(KERN_WARNING "SELinux: (dev %s, type %s) has no "
 			       "xattr support\n", sb->s_id, sb->s_type->name);
 			rc = -EOPNOTSUPP;
 			goto out;
 		}
-		rc = root_inode->i_op->getxattr(root, root_inode,
+
-						XATTR_NAME_SELINUX, NULL, 0);
+		rc = __vfs_getxattr(root, root_inode, XATTR_NAME_SELINUX, NULL, 0);
 		if (rc < 0 && rc != -ENODATA) {
 			if (rc == -EOPNOTSUPP)
 				printk(KERN_WARNING "SELinux: (dev %s, type "
@@ -1410,11 +1410,10 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
 	case SECURITY_FS_USE_NATIVE:
 		break;
 	case SECURITY_FS_USE_XATTR:
-		if (!inode->i_op->getxattr) {
+		if (!(inode->i_opflags & IOP_XATTR)) {
 			isec->sid = sbsec->def_sid;
 			break;
 		}
-
 		/* Need a dentry, since the xattr API requires one.
 		   Life would be simpler if we could just pass the inode. */
 		if (opt_dentry) {
@@ -1445,14 +1444,12 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
 			goto out_unlock;
 		}
 		context[len] = '\0';
-		rc = inode->i_op->getxattr(dentry, inode, XATTR_NAME_SELINUX,
+		rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, context, len);
-					   context, len);
 		if (rc == -ERANGE) {
 			kfree(context);
 
 			/* Need a larger buffer.  Query for the right size. */
-			rc = inode->i_op->getxattr(dentry, inode, XATTR_NAME_SELINUX,
+			rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, NULL, 0);
-						   NULL, 0);
 			if (rc < 0) {
 				dput(dentry);
 				goto out_unlock;
@@ -1465,9 +1462,7 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
 				goto out_unlock;
 			}
 			context[len] = '\0';
-			rc = inode->i_op->getxattr(dentry, inode,
+			rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, context, len);
-						   XATTR_NAME_SELINUX,
-						   context, len);
 		}
 		dput(dentry);
 		if (rc < 0) {

security/smack/smack_lsm.c

@@ -265,14 +265,14 @@ static struct smack_known *smk_fetch(const char *name, struct inode *ip,
 	char *buffer;
 	struct smack_known *skp = NULL;
 
-	if (ip->i_op->getxattr == NULL)
+	if (!(ip->i_opflags & IOP_XATTR))
 		return ERR_PTR(-EOPNOTSUPP);
 
 	buffer = kzalloc(SMK_LONGLABEL, GFP_KERNEL);
 	if (buffer == NULL)
 		return ERR_PTR(-ENOMEM);
 
-	rc = ip->i_op->getxattr(dp, ip, name, buffer, SMK_LONGLABEL);
+	rc = __vfs_getxattr(dp, ip, name, buffer, SMK_LONGLABEL);
 	if (rc < 0)
 		skp = ERR_PTR(rc);
 	else if (rc == 0)
@@ -3520,7 +3520,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
 		 * It would be curious if the label of the task
 		 * does not match that assigned.
 		 */
-		if (inode->i_op->getxattr == NULL)
+		if (!(inode->i_opflags & IOP_XATTR))
 		        break;
 		/*
 		 * Get the dentry for xattr.
@@ -3545,12 +3545,12 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
 			 */
 			if (isp->smk_flags & SMK_INODE_CHANGED) {
 				isp->smk_flags &= ~SMK_INODE_CHANGED;
-				rc = inode->i_op->setxattr(dp, inode,
+				rc = __vfs_setxattr(dp, inode,
 					XATTR_NAME_SMACKTRANSMUTE,
 					TRANS_TRUE, TRANS_TRUE_SIZE,
 					0);
 			} else {
-				rc = inode->i_op->getxattr(dp, inode,
+				rc = __vfs_getxattr(dp, inode,
 					XATTR_NAME_SMACKTRANSMUTE, trattr,
 					TRANS_TRUE_SIZE);
 				if (rc >= 0 && strncmp(trattr, TRANS_TRUE,