text: /*
   * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   * All Rights Reserved.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU 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.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write the Free Software Foundation,
   * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   */
  #include "xfs.h"
  #include "xfs_fs.h"
  #include "xfs_acl.h"
  #include "xfs_bit.h"
  #include "xfs_log.h"
  #include "xfs_inum.h"
  #include "xfs_trans.h"
  #include "xfs_sb.h"
  #include "xfs_ag.h"
  #include "xfs_dir2.h"
  #include "xfs_alloc.h"
  #include "xfs_dmapi.h"
  #include "xfs_quota.h"
  #include "xfs_mount.h"
  #include "xfs_bmap_btree.h"
  #include "xfs_alloc_btree.h"
  #include "xfs_ialloc_btree.h"
  #include "xfs_dir2_sf.h"
  #include "xfs_attr_sf.h"
  #include "xfs_dinode.h"
  #include "xfs_inode.h"
  #include "xfs_bmap.h"
  #include "xfs_btree.h"
  #include "xfs_ialloc.h"
  #include "xfs_rtalloc.h"
  #include "xfs_error.h"
  #include "xfs_itable.h"
  #include "xfs_rw.h"
  #include "xfs_attr.h"
  #include "xfs_buf_item.h"
  #include "xfs_utils.h"
  #include "xfs_vnodeops.h"
  #include "xfs_trace.h"
  
  #include <linux/capability.h>
  #include <linux/xattr.h>
  #include <linux/namei.h>
  #include <linux/posix_acl.h>
  #include <linux/security.h>
  #include <linux/falloc.h>
  #include <linux/fiemap.h>
  #include <linux/slab.h>
  
  /*
   * Bring the timestamps in the XFS inode uptodate.
   *
   * Used before writing the inode to disk.
   */
  void
  xfs_synchronize_times(
  	xfs_inode_t	*ip)
  {
  	struct inode	*inode = VFS_I(ip);
  
  	ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
  	ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
  	ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec;
  	ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec;
  	ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec;
  	ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
  }
  
  /*
   * If the linux inode is valid, mark it dirty.
   * Used when commiting a dirty inode into a transaction so that
   * the inode will get written back by the linux code
   */
  void
  xfs_mark_inode_dirty_sync(
  	xfs_inode_t	*ip)
  {
  	struct inode	*inode = VFS_I(ip);
  
  	if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR)))
  		mark_inode_dirty_sync(inode);
  }
  
  void
  xfs_mark_inode_dirty(
  	xfs_inode_t	*ip)
  {
  	struct inode	*inode = VFS_I(ip);
  
  	if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR)))
  		mark_inode_dirty(inode);
  }
  
  /*
   * Change the requested timestamp in the given inode.
   * We don't lock across timestamp updates, and we don't log them but
   * we do record the fact that there is dirty information in core.
   */
  void
  xfs_ichgtime(
  	xfs_inode_t	*ip,
  	int		flags)
  {
  	struct inode	*inode = VFS_I(ip);
  	timespec_t	tv;
  	int		sync_it = 0;
  
  	tv = current_fs_time(inode->i_sb);
  
  	if ((flags & XFS_ICHGTIME_MOD) &&
  	    !timespec_equal(&inode->i_mtime, &tv)) {
  		inode->i_mtime = tv;
  		sync_it = 1;
  	}
  	if ((flags & XFS_ICHGTIME_CHG) &&
  	    !timespec_equal(&inode->i_ctime, &tv)) {
  		inode->i_ctime = tv;
  		sync_it = 1;
  	}
  
  	/*
  	 * Update complete - now make sure everyone knows that the inode
  	 * is dirty.
  	 */
  	if (sync_it)
  		xfs_mark_inode_dirty_sync(ip);
  }
  
  /*
   * Hook in SELinux.  This is not quite correct yet, what we really need
   * here (as we do for default ACLs) is a mechanism by which creation of
   * these attrs can be journalled at inode creation time (along with the
   * inode, of course, such that log replay can't cause these to be lost).
   */
  STATIC int
  xfs_init_security(
  	struct inode	*inode,
  	struct inode	*dir)
  {
  	struct xfs_inode *ip = XFS_I(inode);
  	size_t		length;
  	void		*value;
  	unsigned char	*name;
  	int		error;
  
  	error = security_inode_init_security(inode, dir, (char **)&name,
  					     &value, &length);
  	if (error) {
  		if (error == -EOPNOTSUPP)
  			return 0;
  		return -error;
  	}
  
  	error = xfs_attr_set(ip, name, value, length, ATTR_SECURE);
  
  	kfree(name);
  	kfree(value);
  	return error;
  }
  
  static void
  xfs_dentry_to_name(
  	struct xfs_name	*namep,
  	struct dentry	*dentry)
  {
  	namep->name = dentry->d_name.name;
  	namep->len = dentry->d_name.len;
  }
  
  STATIC void
  xfs_cleanup_inode(
  	struct inode	*dir,
  	struct inode	*inode,
  	struct dentry	*dentry)
  {
  	struct xfs_name	teardown;
  
  	/* Oh, the horror.
  	 * If we can't add the ACL or we fail in
  	 * xfs_init_security we must back out.
  	 * ENOSPC can hit here, among other things.
  	 */
  	xfs_dentry_to_name(&teardown, dentry);
  
  	xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
  	iput(inode);
  }
  
  STATIC int
  xfs_vn_mknod(
  	struct inode	*dir,
  	struct dentry	*dentry,
  	int		mode,
  	dev_t		rdev)
  {
  	struct inode	*inode;
  	struct xfs_inode *ip = NULL;
  	struct posix_acl *default_acl = NULL;
  	struct xfs_name	name;
  	int		error;
  
  	/*
  	 * Irix uses Missed'em'V split, but doesn't want to see
  	 * the upper 5 bits of (14bit) major.
  	 */
  	if (S_ISCHR(mode) || S_ISBLK(mode)) {
  		if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
  			return -EINVAL;
  		rdev = sysv_encode_dev(rdev);
  	} else {
  		rdev = 0;
  	}
  
  	if (IS_POSIXACL(dir)) {
  		default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
  		if (IS_ERR(default_acl))
  			return -PTR_ERR(default_acl);
  
  		if (!default_acl)
  			mode &= ~current_umask();
  	}
  
  	xfs_dentry_to_name(&name, dentry);
  	error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL);
  	if (unlikely(error))
  		goto out_free_acl;
  
  	inode = VFS_I(ip);
  
  	error = xfs_init_security(inode, dir);
  	if (unlikely(error))
  		goto out_cleanup_inode;
  
  	if (default_acl) {
  		error = -xfs_inherit_acl(inode, default_acl);
  		if (unlikely(error))
  			goto out_cleanup_inode;
  		posix_acl_release(default_acl);
  	}
  
  
  	d_instantiate(dentry, inode);
  	return -error;
  
   out_cleanup_inode:
  	xfs_cleanup_inode(dir, inode, dentry);
   out_free_acl:
  	posix_acl_release(default_acl);
  	return -error;
  }
  
  STATIC int
  xfs_vn_create(
  	struct inode	*dir,
  	struct dentry	*dentry,
  	int		mode,
  	struct nameidata *nd)
  {
  	return xfs_vn_mknod(dir, dentry, mode, 0);
  }
  
  STATIC int
  xfs_vn_mkdir(
  	struct inode	*dir,
  	struct dentry	*dentry,
  	int		mode)
  {
  	return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
  }
  
  STATIC struct dentry *
  xfs_vn_lookup(
  	struct inode	*dir,
  	struct dentry	*dentry,
  	struct nameidata *nd)
  {
  	struct xfs_inode *cip;
  	struct xfs_name	name;
  	int		error;
  
  	if (dentry->d_name.len >= MAXNAMELEN)
  		return ERR_PTR(-ENAMETOOLONG);
  
  	xfs_dentry_to_name(&name, dentry);
  	error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
  	if (unlikely(error)) {
  		if (unlikely(error != ENOENT))
  			return ERR_PTR(-error);
  		d_add(dentry, NULL);
  		return NULL;
  	}
  
  	return d_splice_alias(VFS_I(cip), dentry);
  }
  
  STATIC struct dentry *
  xfs_vn_ci_lookup(
  	struct inode	*dir,
  	struct dentry	*dentry,
  	struct nameidata *nd)
  {
  	struct xfs_inode *ip;
  	struct xfs_name	xname;
  	struct xfs_name ci_name;
  	struct qstr	dname;
  	int		error;
  
  	if (dentry->d_name.len >= MAXNAMELEN)
  		return ERR_PTR(-ENAMETOOLONG);
  
  	xfs_dentry_to_name(&xname, dentry);
  	error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
  	if (unlikely(error)) {
  		if (unlikely(error != ENOENT))
  			return ERR_PTR(-error);
  		/*
  		 * call d_add(dentry, NULL) here when d_drop_negative_children
  		 * is called in xfs_vn_mknod (ie. allow negative dentries
  		 * with CI filesystems).
  		 */
  		return NULL;
  	}
  
  	/* if exact match, just splice and exit */
  	if (!ci_name.name)
  		return d_splice_alias(VFS_I(ip), dentry);
  
  	/* else case-insensitive match... */
  	dname.name = ci_name.name;
  	dname.len = ci_name.len;
  	dentry = d_add_ci(dentry, VFS_I(ip), &dname);
  	kmem_free(ci_name.name);
  	return dentry;
  }
  
  STATIC int
  xfs_vn_link(
  	struct dentry	*old_dentry,
  	struct inode	*dir,
  	struct dentry	*dentry)
  {
  	struct inode	*inode = old_dentry->d_inode;
  	struct xfs_name	name;
  	int		error;
  
  	xfs_dentry_to_name(&name, dentry);
  
  	error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
  	if (unlikely(error))
  		return -error;
  
  	atomic_inc(&inode->i_count);
  	d_instantiate(dentry, inode);
  	return 0;
  }
  
  STATIC int
  xfs_vn_unlink(
  	struct inode	*dir,
  	struct dentry	*dentry)
  {
  	struct xfs_name	name;
  	int		error;
  
  	xfs_dentry_to_name(&name, dentry);
  
  	error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
  	if (error)
  		return error;
  
  	/*
  	 * With unlink, the VFS makes the dentry "negative": no inode,
  	 * but still hashed. This is incompatible with case-insensitive
  	 * mode, so invalidate (unhash) the dentry in CI-mode.
  	 */
  	if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
  		d_invalidate(dentry);
  	return 0;
  }
  
  STATIC int
  xfs_vn_symlink(
  	struct inode	*dir,
  	struct dentry	*dentry,
  	const char	*symname)
  {
  	struct inode	*inode;
  	struct xfs_inode *cip = NULL;
  	struct xfs_name	name;
  	int		error;
  	mode_t		mode;
  
  	mode = S_IFLNK |
  		(irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
  	xfs_dentry_to_name(&name, dentry);
  
  	error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL);
  	if (unlikely(error))
  		goto out;
  
  	inode = VFS_I(cip);
  
  	error = xfs_init_security(inode, dir);
  	if (unlikely(error))
  		goto out_cleanup_inode;
  
  	d_instantiate(dentry, inode);
  	return 0;
  
   out_cleanup_inode:
  	xfs_cleanup_inode(dir, inode, dentry);
   out:
  	return -error;
  }
  
  STATIC int
  xfs_vn_rename(
  	struct inode	*odir,
  	struct dentry	*odentry,
  	struct inode	*ndir,
  	struct dentry	*ndentry)
  {
  	struct inode	*new_inode = ndentry->d_inode;
  	struct xfs_name	oname;
  	struct xfs_name	nname;
  
  	xfs_dentry_to_name(&oname, odentry);
  	xfs_dentry_to_name(&nname, ndentry);
  
  	return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
  			   XFS_I(ndir), &nname, new_inode ?
  			   			XFS_I(new_inode) : NULL);
  }
  
  /*
   * careful here - this function can get called recursively, so
   * we need to be very careful about how much stack we use.
   * uio is kmalloced for this reason...
   */
  STATIC void *
  xfs_vn_follow_link(
  	struct dentry		*dentry,
  	struct nameidata	*nd)
  {
  	char			*link;
  	int			error = -ENOMEM;
  
  	link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
  	if (!link)
  		goto out_err;
  
  	error = -xfs_readlink(XFS_I(dentry->d_inode), link);
  	if (unlikely(error))
  		goto out_kfree;
  
  	nd_set_link(nd, link);
  	return NULL;
  
   out_kfree:
  	kfree(link);
   out_err:
  	nd_set_link(nd, ERR_PTR(error));
  	return NULL;
  }
  
  STATIC void
  xfs_vn_put_link(
  	struct dentry	*dentry,
  	struct nameidata *nd,
  	void		*p)
  {
  	char		*s = nd_get_link(nd);
  
  	if (!IS_ERR(s))
  		kfree(s);
  }
  
  STATIC int
  xfs_vn_getattr(
  	struct vfsmount		*mnt,
  	struct dentry		*dentry,
  	struct kstat		*stat)
  {
  	struct inode		*inode = dentry->d_inode;
  	struct xfs_inode	*ip = XFS_I(inode);
  	struct xfs_mount	*mp = ip->i_mount;
  
  	xfs_itrace_entry(ip);
  
  	if (XFS_FORCED_SHUTDOWN(mp))
  		return XFS_ERROR(EIO);
  
  	stat->size = XFS_ISIZE(ip);
  	stat->dev = inode->i_sb->s_dev;
  	stat->mode = ip->i_d.di_mode;
  	stat->nlink = ip->i_d.di_nlink;
  	stat->uid = ip->i_d.di_uid;
  	stat->gid = ip->i_d.di_gid;
  	stat->ino = ip->i_ino;
  	stat->atime = inode->i_atime;
  	stat->mtime = inode->i_mtime;
  	stat->ctime = inode->i_ctime;
  	stat->blocks =
  		XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
  
  
  	switch (inode->i_mode & S_IFMT) {
  	case S_IFBLK:
  	case S_IFCHR:
  		stat->blksize = BLKDEV_IOSIZE;
  		stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
  				   sysv_minor(ip->i_df.if_u2.if_rdev));
  		break;
  	default:
  		if (XFS_IS_REALTIME_INODE(ip)) {
  			/*
  			 * If the file blocks are being allocated from a
  			 * realtime volume, then return the inode's realtime
  			 * extent size or the realtime volume's extent size.
  			 */
  			stat->blksize =
  				xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
  		} else
  			stat->blksize = xfs_preferred_iosize(mp);
  		stat->rdev = 0;
  		break;
  	}
  
  	return 0;
  }
  
  STATIC int
  xfs_vn_setattr(
  	struct dentry	*dentry,
  	struct iattr	*iattr)
  {
  	return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0);
  }
  
  /*
   * block_truncate_page can return an error, but we can't propagate it
   * at all here. Leave a complaint + stack trace in the syslog because
   * this could be bad. If it is bad, we need to propagate the error further.
   */
  STATIC void
  xfs_vn_truncate(
  	struct inode	*inode)
  {
  	int	error;
  	error = block_truncate_page(inode->i_mapping, inode->i_size,
  							xfs_get_blocks);
  	WARN_ON(error);
  }
  
  STATIC long
  xfs_vn_fallocate(
  	struct inode	*inode,
  	int		mode,
  	loff_t		offset,
  	loff_t		len)
  {
  	long		error;
  	loff_t		new_size = 0;
  	xfs_flock64_t	bf;
  	xfs_inode_t	*ip = XFS_I(inode);
  
  	/* preallocation on directories not yet supported */
  	error = -ENODEV;
  	if (S_ISDIR(inode->i_mode))
  		goto out_error;
  
  	bf.l_whence = 0;
  	bf.l_start = offset;
  	bf.l_len = len;
  
  	xfs_ilock(ip, XFS_IOLOCK_EXCL);
  
  	/* check the new inode size is valid before allocating */
  	if (!(mode & FALLOC_FL_KEEP_SIZE) &&
  	    offset + len > i_size_read(inode)) {
  		new_size = offset + len;
  		error = inode_newsize_ok(inode, new_size);
  		if (error)
  			goto out_unlock;
  	}
  
  	error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf,
  				       0, XFS_ATTR_NOLOCK);
  	if (error)
  		goto out_unlock;
  
  	/* Change file size if needed */
  	if (new_size) {
  		struct iattr iattr;
  
  		iattr.ia_valid = ATTR_SIZE;
  		iattr.ia_size = new_size;
  		error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK);
  	}
  
  out_unlock:
  	xfs_iunlock(ip, XFS_IOLOCK_EXCL);
  out_error:
  	return error;
  }
  
  #define XFS_FIEMAP_FLAGS	(FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
  
  /*
   * Call fiemap helper to fill in user data.
   * Returns positive errors to xfs_getbmap.
   */
  STATIC int
  xfs_fiemap_format(
  	void			**arg,
  	struct getbmapx		*bmv,
  	int			*full)
  {
  	int			error;
  	struct fiemap_extent_info *fieinfo = *arg;
  	u32			fiemap_flags = 0;
  	u64			logical, physical, length;
  
  	/* Do nothing for a hole */
  	if (bmv->bmv_block == -1LL)
  		return 0;
  
  	logical = BBTOB(bmv->bmv_offset);
  	physical = BBTOB(bmv->bmv_block);
  	length = BBTOB(bmv->bmv_length);
  
  	if (bmv->bmv_oflags & BMV_OF_PREALLOC)
  		fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
  	else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
  		fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
  		physical = 0;   /* no block yet */
  	}
  	if (bmv->bmv_oflags & BMV_OF_LAST)
  		fiemap_flags |= FIEMAP_EXTENT_LAST;
  
  	error = fiemap_fill_next_extent(fieinfo, logical, physical,
  					length, fiemap_flags);
  	if (error > 0) {
  		error = 0;
  		*full = 1;	/* user array now full */
  	}
  
  	return -error;
  }
  
  STATIC int
  xfs_vn_fiemap(
  	struct inode		*inode,
  	struct fiemap_extent_info *fieinfo,
  	u64			start,
  	u64			length)
  {
  	xfs_inode_t		*ip = XFS_I(inode);
  	struct getbmapx		bm;
  	int			error;
  
  	error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
  	if (error)
  		return error;
  
  	/* Set up bmap header for xfs internal routine */
  	bm.bmv_offset = BTOBB(start);
  	/* Special case for whole file */
  	if (length == FIEMAP_MAX_OFFSET)
  		bm.bmv_length = -1LL;
  	else
  		bm.bmv_length = BTOBB(length);
  
  	/* We add one because in getbmap world count includes the header */
  	bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
  					fieinfo->fi_extents_max + 1;
  	bm.bmv_count = min_t(__s32, bm.bmv_count,
  			     (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
  	bm.bmv_iflags = BMV_IF_PREALLOC;
  	if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
  		bm.bmv_iflags |= BMV_IF_ATTRFORK;
  	if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
  		bm.bmv_iflags |= BMV_IF_DELALLOC;
  
  	error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
  	if (error)
  		return -error;
  
  	return 0;
  }
  
  static const struct inode_operations xfs_inode_operations = {
  	.check_acl		= xfs_check_acl,
  	.truncate		= xfs_vn_truncate,
  	.getattr		= xfs_vn_getattr,
  	.setattr		= xfs_vn_setattr,
  	.setxattr		= generic_setxattr,
  	.getxattr		= generic_getxattr,
  	.removexattr		= generic_removexattr,
  	.listxattr		= xfs_vn_listxattr,
  	.fallocate		= xfs_vn_fallocate,
  	.fiemap			= xfs_vn_fiemap,
  };
  
  static const struct inode_operations xfs_dir_inode_operations = {
  	.create			= xfs_vn_create,
  	.lookup			= xfs_vn_lookup,
  	.link			= xfs_vn_link,
  	.unlink			= xfs_vn_unlink,
  	.symlink		= xfs_vn_symlink,
  	.mkdir			= xfs_vn_mkdir,
  	/*
  	 * Yes, XFS uses the same method for rmdir and unlink.
  	 *
  	 * There are some subtile differences deeper in the code,
  	 * but we use S_ISDIR to check for those.
  	 */
  	.rmdir			= xfs_vn_unlink,
  	.mknod			= xfs_vn_mknod,
  	.rename			= xfs_vn_rename,
  	.check_acl		= xfs_check_acl,
  	.getattr		= xfs_vn_getattr,
  	.setattr		= xfs_vn_setattr,
  	.setxattr		= generic_setxattr,
  	.getxattr		= generic_getxattr,
  	.removexattr		= generic_removexattr,
  	.listxattr		= xfs_vn_listxattr,
  };
  
  static const struct inode_operations xfs_dir_ci_inode_operations = {
  	.create			= xfs_vn_create,
  	.lookup			= xfs_vn_ci_lookup,
  	.link			= xfs_vn_link,
  	.unlink			= xfs_vn_unlink,
  	.symlink		= xfs_vn_symlink,
  	.mkdir			= xfs_vn_mkdir,
  	/*
  	 * Yes, XFS uses the same method for rmdir and unlink.
  	 *
  	 * There are some subtile differences deeper in the code,
  	 * but we use S_ISDIR to check for those.
  	 */
  	.rmdir			= xfs_vn_unlink,
  	.mknod			= xfs_vn_mknod,
  	.rename			= xfs_vn_rename,
  	.check_acl		= xfs_check_acl,
  	.getattr		= xfs_vn_getattr,
  	.setattr		= xfs_vn_setattr,
  	.setxattr		= generic_setxattr,
  	.getxattr		= generic_getxattr,
  	.removexattr		= generic_removexattr,
  	.listxattr		= xfs_vn_listxattr,
  };
  
  static const struct inode_operations xfs_symlink_inode_operations = {
  	.readlink		= generic_readlink,
  	.follow_link		= xfs_vn_follow_link,
  	.put_link		= xfs_vn_put_link,
  	.check_acl		= xfs_check_acl,
  	.getattr		= xfs_vn_getattr,
  	.setattr		= xfs_vn_setattr,
  	.setxattr		= generic_setxattr,
  	.getxattr		= generic_getxattr,
  	.removexattr		= generic_removexattr,
  	.listxattr		= xfs_vn_listxattr,
  };
  
  STATIC void
  xfs_diflags_to_iflags(
  	struct inode		*inode,
  	struct xfs_inode	*ip)
  {
  	if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
  		inode->i_flags |= S_IMMUTABLE;
  	else
  		inode->i_flags &= ~S_IMMUTABLE;
  	if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
  		inode->i_flags |= S_APPEND;
  	else
  		inode->i_flags &= ~S_APPEND;
  	if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
  		inode->i_flags |= S_SYNC;
  	else
  		inode->i_flags &= ~S_SYNC;
  	if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
  		inode->i_flags |= S_NOATIME;
  	else
  		inode->i_flags &= ~S_NOATIME;
  }
  
  /*
   * Initialize the Linux inode, set up the operation vectors and
   * unlock the inode.
   *
   * When reading existing inodes from disk this is called directly
   * from xfs_iget, when creating a new inode it is called from
   * xfs_ialloc after setting up the inode.
   *
   * We are always called with an uninitialised linux inode here.
   * We need to initialise the necessary fields and take a reference
   * on it.
   */
  void
  xfs_setup_inode(
  	struct xfs_inode	*ip)
  {
  	struct inode		*inode = &ip->i_vnode;
  
  	inode->i_ino = ip->i_ino;
  	inode->i_state = I_NEW;
  	inode_add_to_lists(ip->i_mount->m_super, inode);
  
  	inode->i_mode	= ip->i_d.di_mode;
  	inode->i_nlink	= ip->i_d.di_nlink;
  	inode->i_uid	= ip->i_d.di_uid;
  	inode->i_gid	= ip->i_d.di_gid;
  
  	switch (inode->i_mode & S_IFMT) {
  	case S_IFBLK:
  	case S_IFCHR:
  		inode->i_rdev =
  			MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
  			      sysv_minor(ip->i_df.if_u2.if_rdev));
  		break;
  	default:
  		inode->i_rdev = 0;
  		break;
  	}
  
  	inode->i_generation = ip->i_d.di_gen;
  	i_size_write(inode, ip->i_d.di_size);
  	inode->i_atime.tv_sec	= ip->i_d.di_atime.t_sec;
  	inode->i_atime.tv_nsec	= ip->i_d.di_atime.t_nsec;
  	inode->i_mtime.tv_sec	= ip->i_d.di_mtime.t_sec;
  	inode->i_mtime.tv_nsec	= ip->i_d.di_mtime.t_nsec;
  	inode->i_ctime.tv_sec	= ip->i_d.di_ctime.t_sec;
  	inode->i_ctime.tv_nsec	= ip->i_d.di_ctime.t_nsec;
  	xfs_diflags_to_iflags(inode, ip);
  
  	switch (inode->i_mode & S_IFMT) {
  	case S_IFREG:
  		inode->i_op = &xfs_inode_operations;
  		inode->i_fop = &xfs_file_operations;
  		inode->i_mapping->a_ops = &xfs_address_space_operations;
  		break;
  	case S_IFDIR:
  		if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
  			inode->i_op = &xfs_dir_ci_inode_operations;
  		else
  			inode->i_op = &xfs_dir_inode_operations;
  		inode->i_fop = &xfs_dir_file_operations;
  		break;
  	case S_IFLNK:
  		inode->i_op = &xfs_symlink_inode_operations;
  		if (!(ip->i_df.if_flags & XFS_IFINLINE))
  			inode->i_mapping->a_ops = &xfs_address_space_operations;
  		break;
  	default:
  		inode->i_op = &xfs_inode_operations;
  		init_special_inode(inode, inode->i_mode, inode->i_rdev);
  		break;
  	}
  
  	xfs_iflags_clear(ip, XFS_INEW);
  	barrier();
  
  	unlock_new_inode(inode);
  }
  