text: /*
   * Copyright (c) 2004-2005 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 <linux/compat.h>
  #include <linux/ioctl.h>
  #include <linux/mount.h>
  #include <linux/slab.h>
  #include <linux/uaccess.h>
  #include <linux/fsmap.h>
  #include "xfs.h"
  #include "xfs_fs.h"
  #include "xfs_format.h"
  #include "xfs_log_format.h"
  #include "xfs_trans_resv.h"
  #include "xfs_mount.h"
  #include "xfs_inode.h"
  #include "xfs_itable.h"
  #include "xfs_error.h"
  #include "xfs_fsops.h"
  #include "xfs_alloc.h"
  #include "xfs_rtalloc.h"
  #include "xfs_attr.h"
  #include "xfs_ioctl.h"
  #include "xfs_ioctl32.h"
  #include "xfs_trace.h"
  
  #define  _NATIVE_IOC(cmd, type) \
  	  _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
  
  #ifdef BROKEN_X86_ALIGNMENT
  STATIC int
  xfs_compat_flock64_copyin(
  	xfs_flock64_t		*bf,
  	compat_xfs_flock64_t	__user *arg32)
  {
  	if (get_user(bf->l_type,	&arg32->l_type) ||
  	    get_user(bf->l_whence,	&arg32->l_whence) ||
  	    get_user(bf->l_start,	&arg32->l_start) ||
  	    get_user(bf->l_len,		&arg32->l_len) ||
  	    get_user(bf->l_sysid,	&arg32->l_sysid) ||
  	    get_user(bf->l_pid,		&arg32->l_pid) ||
  	    copy_from_user(bf->l_pad,	&arg32->l_pad,	4*sizeof(u32)))
  		return -EFAULT;
  	return 0;
  }
  
  STATIC int
  xfs_compat_ioc_fsgeometry_v1(
  	struct xfs_mount	  *mp,
  	compat_xfs_fsop_geom_v1_t __user *arg32)
  {
  	xfs_fsop_geom_t		  fsgeo;
  	int			  error;
  
  	error = xfs_fs_geometry(mp, &fsgeo, 3);
  	if (error)
  		return error;
  	/* The 32-bit variant simply has some padding at the end */
  	if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
  		return -EFAULT;
  	return 0;
  }
  
  STATIC int
  xfs_compat_growfs_data_copyin(
  	struct xfs_growfs_data	 *in,
  	compat_xfs_growfs_data_t __user *arg32)
  {
  	if (get_user(in->newblocks, &arg32->newblocks) ||
  	    get_user(in->imaxpct,   &arg32->imaxpct))
  		return -EFAULT;
  	return 0;
  }
  
  STATIC int
  xfs_compat_growfs_rt_copyin(
  	struct xfs_growfs_rt	 *in,
  	compat_xfs_growfs_rt_t	__user *arg32)
  {
  	if (get_user(in->newblocks, &arg32->newblocks) ||
  	    get_user(in->extsize,   &arg32->extsize))
  		return -EFAULT;
  	return 0;
  }
  
  STATIC int
  xfs_inumbers_fmt_compat(
  	void			__user *ubuffer,
  	const struct xfs_inogrp	*buffer,
  	long			count,
  	long			*written)
  {
  	compat_xfs_inogrp_t	__user *p32 = ubuffer;
  	long			i;
  
  	for (i = 0; i < count; i++) {
  		if (put_user(buffer[i].xi_startino,   &p32[i].xi_startino) ||
  		    put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
  		    put_user(buffer[i].xi_allocmask,  &p32[i].xi_allocmask))
  			return -EFAULT;
  	}
  	*written = count * sizeof(*p32);
  	return 0;
  }
  
  #else
  #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
  #endif	/* BROKEN_X86_ALIGNMENT */
  
  STATIC int
  xfs_ioctl32_bstime_copyin(
  	xfs_bstime_t		*bstime,
  	compat_xfs_bstime_t	__user *bstime32)
  {
  	compat_time_t		sec32;	/* tv_sec differs on 64 vs. 32 */
  
  	if (get_user(sec32,		&bstime32->tv_sec)	||
  	    get_user(bstime->tv_nsec,	&bstime32->tv_nsec))
  		return -EFAULT;
  	bstime->tv_sec = sec32;
  	return 0;
  }
  
  /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
  STATIC int
  xfs_ioctl32_bstat_copyin(
  	xfs_bstat_t		*bstat,
  	compat_xfs_bstat_t	__user *bstat32)
  {
  	if (get_user(bstat->bs_ino,	&bstat32->bs_ino)	||
  	    get_user(bstat->bs_mode,	&bstat32->bs_mode)	||
  	    get_user(bstat->bs_nlink,	&bstat32->bs_nlink)	||
  	    get_user(bstat->bs_uid,	&bstat32->bs_uid)	||
  	    get_user(bstat->bs_gid,	&bstat32->bs_gid)	||
  	    get_user(bstat->bs_rdev,	&bstat32->bs_rdev)	||
  	    get_user(bstat->bs_blksize,	&bstat32->bs_blksize)	||
  	    get_user(bstat->bs_size,	&bstat32->bs_size)	||
  	    xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
  	    xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
  	    xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
  	    get_user(bstat->bs_blocks,	&bstat32->bs_size)	||
  	    get_user(bstat->bs_xflags,	&bstat32->bs_size)	||
  	    get_user(bstat->bs_extsize,	&bstat32->bs_extsize)	||
  	    get_user(bstat->bs_extents,	&bstat32->bs_extents)	||
  	    get_user(bstat->bs_gen,	&bstat32->bs_gen)	||
  	    get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
  	    get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
  	    get_user(bstat->bs_forkoff,	&bstat32->bs_forkoff)	||
  	    get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask)	||
  	    get_user(bstat->bs_dmstate,	&bstat32->bs_dmstate)	||
  	    get_user(bstat->bs_aextents, &bstat32->bs_aextents))
  		return -EFAULT;
  	return 0;
  }
  
  /* XFS_IOC_FSBULKSTAT and friends */
  
  STATIC int
  xfs_bstime_store_compat(
  	compat_xfs_bstime_t	__user *p32,
  	const xfs_bstime_t	*p)
  {
  	__s32			sec32;
  
  	sec32 = p->tv_sec;
  	if (put_user(sec32, &p32->tv_sec) ||
  	    put_user(p->tv_nsec, &p32->tv_nsec))
  		return -EFAULT;
  	return 0;
  }
  
  /* Return 0 on success or positive error (to xfs_bulkstat()) */
  STATIC int
  xfs_bulkstat_one_fmt_compat(
  	void			__user *ubuffer,
  	int			ubsize,
  	int			*ubused,
  	const xfs_bstat_t	*buffer)
  {
  	compat_xfs_bstat_t	__user *p32 = ubuffer;
  
  	if (ubsize < sizeof(*p32))
  		return -ENOMEM;
  
  	if (put_user(buffer->bs_ino,	  &p32->bs_ino)		||
  	    put_user(buffer->bs_mode,	  &p32->bs_mode)	||
  	    put_user(buffer->bs_nlink,	  &p32->bs_nlink)	||
  	    put_user(buffer->bs_uid,	  &p32->bs_uid)		||
  	    put_user(buffer->bs_gid,	  &p32->bs_gid)		||
  	    put_user(buffer->bs_rdev,	  &p32->bs_rdev)	||
  	    put_user(buffer->bs_blksize,  &p32->bs_blksize)	||
  	    put_user(buffer->bs_size,	  &p32->bs_size)	||
  	    xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
  	    xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
  	    xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
  	    put_user(buffer->bs_blocks,	  &p32->bs_blocks)	||
  	    put_user(buffer->bs_xflags,	  &p32->bs_xflags)	||
  	    put_user(buffer->bs_extsize,  &p32->bs_extsize)	||
  	    put_user(buffer->bs_extents,  &p32->bs_extents)	||
  	    put_user(buffer->bs_gen,	  &p32->bs_gen)		||
  	    put_user(buffer->bs_projid,	  &p32->bs_projid)	||
  	    put_user(buffer->bs_projid_hi,	&p32->bs_projid_hi)	||
  	    put_user(buffer->bs_forkoff,  &p32->bs_forkoff)	||
  	    put_user(buffer->bs_dmevmask, &p32->bs_dmevmask)	||
  	    put_user(buffer->bs_dmstate,  &p32->bs_dmstate)	||
  	    put_user(buffer->bs_aextents, &p32->bs_aextents))
  		return -EFAULT;
  	if (ubused)
  		*ubused = sizeof(*p32);
  	return 0;
  }
  
  STATIC int
  xfs_bulkstat_one_compat(
  	xfs_mount_t	*mp,		/* mount point for filesystem */
  	xfs_ino_t	ino,		/* inode number to get data for */
  	void		__user *buffer,	/* buffer to place output in */
  	int		ubsize,		/* size of buffer */
  	int		*ubused,	/* bytes used by me */
  	int		*stat)		/* BULKSTAT_RV_... */
  {
  	return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
  				    xfs_bulkstat_one_fmt_compat,
  				    ubused, stat);
  }
  
  /* copied from xfs_ioctl.c */
  STATIC int
  xfs_compat_ioc_bulkstat(
  	xfs_mount_t		  *mp,
  	unsigned int		  cmd,
  	compat_xfs_fsop_bulkreq_t __user *p32)
  {
  	u32			addr;
  	xfs_fsop_bulkreq_t	bulkreq;
  	int			count;	/* # of records returned */
  	xfs_ino_t		inlast;	/* last inode number */
  	int			done;
  	int			error;
  
  	/* done = 1 if there are more stats to get and if bulkstat */
  	/* should be called again (unused here, but used in dmapi) */
  
  	if (!capable(CAP_SYS_ADMIN))
  		return -EPERM;
  
  	if (XFS_FORCED_SHUTDOWN(mp))
  		return -EIO;
  
  	if (get_user(addr, &p32->lastip))
  		return -EFAULT;
  	bulkreq.lastip = compat_ptr(addr);
  	if (get_user(bulkreq.icount, &p32->icount) ||
  	    get_user(addr, &p32->ubuffer))
  		return -EFAULT;
  	bulkreq.ubuffer = compat_ptr(addr);
  	if (get_user(addr, &p32->ocount))
  		return -EFAULT;
  	bulkreq.ocount = compat_ptr(addr);
  
  	if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
  		return -EFAULT;
  
  	if ((count = bulkreq.icount) <= 0)
  		return -EINVAL;
  
  	if (bulkreq.ubuffer == NULL)
  		return -EINVAL;
  
  	if (cmd == XFS_IOC_FSINUMBERS_32) {
  		error = xfs_inumbers(mp, &inlast, &count,
  				bulkreq.ubuffer, xfs_inumbers_fmt_compat);
  	} else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
  		int res;
  
  		error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
  				sizeof(compat_xfs_bstat_t), NULL, &res);
  	} else if (cmd == XFS_IOC_FSBULKSTAT_32) {
  		error = xfs_bulkstat(mp, &inlast, &count,
  			xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
  			bulkreq.ubuffer, &done);
  	} else
  		error = -EINVAL;
  	if (error)
  		return error;
  
  	if (bulkreq.ocount != NULL) {
  		if (copy_to_user(bulkreq.lastip, &inlast,
  						sizeof(xfs_ino_t)))
  			return -EFAULT;
  
  		if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
  			return -EFAULT;
  	}
  
  	return 0;
  }
  
  STATIC int
  xfs_compat_handlereq_copyin(
  	xfs_fsop_handlereq_t		*hreq,
  	compat_xfs_fsop_handlereq_t	__user *arg32)
  {
  	compat_xfs_fsop_handlereq_t	hreq32;
  
  	if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
  		return -EFAULT;
  
  	hreq->fd = hreq32.fd;
  	hreq->path = compat_ptr(hreq32.path);
  	hreq->oflags = hreq32.oflags;
  	hreq->ihandle = compat_ptr(hreq32.ihandle);
  	hreq->ihandlen = hreq32.ihandlen;
  	hreq->ohandle = compat_ptr(hreq32.ohandle);
  	hreq->ohandlen = compat_ptr(hreq32.ohandlen);
  
  	return 0;
  }
  
  STATIC struct dentry *
  xfs_compat_handlereq_to_dentry(
  	struct file		*parfilp,
  	compat_xfs_fsop_handlereq_t *hreq)
  {
  	return xfs_handle_to_dentry(parfilp,
  			compat_ptr(hreq->ihandle), hreq->ihandlen);
  }
  
  STATIC int
  xfs_compat_attrlist_by_handle(
  	struct file		*parfilp,
  	void			__user *arg)
  {
  	int			error;
  	attrlist_cursor_kern_t	*cursor;
  	compat_xfs_fsop_attrlist_handlereq_t al_hreq;
  	struct dentry		*dentry;
  	char			*kbuf;
  
  	if (!capable(CAP_SYS_ADMIN))
  		return -EPERM;
  	if (copy_from_user(&al_hreq, arg,
  			   sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
  		return -EFAULT;
  	if (al_hreq.buflen < sizeof(struct attrlist) ||
  	    al_hreq.buflen > XFS_XATTR_LIST_MAX)
  		return -EINVAL;
  
  	/*
  	 * Reject flags, only allow namespaces.
  	 */
  	if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
  		return -EINVAL;
  
  	dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
  	if (IS_ERR(dentry))
  		return PTR_ERR(dentry);
  
  	error = -ENOMEM;
  	kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
  	if (!kbuf)
  		goto out_dput;
  
  	cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
  	error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
  					al_hreq.flags, cursor);
  	if (error)
  		goto out_kfree;
  
  	if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
  		error = -EFAULT;
  
  out_kfree:
  	kmem_free(kbuf);
  out_dput:
  	dput(dentry);
  	return error;
  }
  
  STATIC int
  xfs_compat_attrmulti_by_handle(
  	struct file				*parfilp,
  	void					__user *arg)
  {
  	int					error;
  	compat_xfs_attr_multiop_t		*ops;
  	compat_xfs_fsop_attrmulti_handlereq_t	am_hreq;
  	struct dentry				*dentry;
  	unsigned int				i, size;
  	unsigned char				*attr_name;
  
  	if (!capable(CAP_SYS_ADMIN))
  		return -EPERM;
  	if (copy_from_user(&am_hreq, arg,
  			   sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
  		return -EFAULT;
  
  	/* overflow check */
  	if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
  		return -E2BIG;
  
  	dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
  	if (IS_ERR(dentry))
  		return PTR_ERR(dentry);
  
  	error = -E2BIG;
  	size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
  	if (!size || size > 16 * PAGE_SIZE)
  		goto out_dput;
  
  	ops = memdup_user(compat_ptr(am_hreq.ops), size);
  	if (IS_ERR(ops)) {
  		error = PTR_ERR(ops);
  		goto out_dput;
  	}
  
  	error = -ENOMEM;
  	attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
  	if (!attr_name)
  		goto out_kfree_ops;
  
  	error = 0;
  	for (i = 0; i < am_hreq.opcount; i++) {
  		ops[i].am_error = strncpy_from_user((char *)attr_name,
  				compat_ptr(ops[i].am_attrname),
  				MAXNAMELEN);
  		if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
  			error = -ERANGE;
  		if (ops[i].am_error < 0)
  			break;
  
  		switch (ops[i].am_opcode) {
  		case ATTR_OP_GET:
  			ops[i].am_error = xfs_attrmulti_attr_get(
  					d_inode(dentry), attr_name,
  					compat_ptr(ops[i].am_attrvalue),
  					&ops[i].am_length, ops[i].am_flags);
  			break;
  		case ATTR_OP_SET:
  			ops[i].am_error = mnt_want_write_file(parfilp);
  			if (ops[i].am_error)
  				break;
  			ops[i].am_error = xfs_attrmulti_attr_set(
  					d_inode(dentry), attr_name,
  					compat_ptr(ops[i].am_attrvalue),
  					ops[i].am_length, ops[i].am_flags);
  			mnt_drop_write_file(parfilp);
  			break;
  		case ATTR_OP_REMOVE:
  			ops[i].am_error = mnt_want_write_file(parfilp);
  			if (ops[i].am_error)
  				break;
  			ops[i].am_error = xfs_attrmulti_attr_remove(
  					d_inode(dentry), attr_name,
  					ops[i].am_flags);
  			mnt_drop_write_file(parfilp);
  			break;
  		default:
  			ops[i].am_error = -EINVAL;
  		}
  	}
  
  	if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
  		error = -EFAULT;
  
  	kfree(attr_name);
   out_kfree_ops:
  	kfree(ops);
   out_dput:
  	dput(dentry);
  	return error;
  }
  
  STATIC int
  xfs_compat_fssetdm_by_handle(
  	struct file		*parfilp,
  	void			__user *arg)
  {
  	int			error;
  	struct fsdmidata	fsd;
  	compat_xfs_fsop_setdm_handlereq_t dmhreq;
  	struct dentry		*dentry;
  
  	if (!capable(CAP_MKNOD))
  		return -EPERM;
  	if (copy_from_user(&dmhreq, arg,
  			   sizeof(compat_xfs_fsop_setdm_handlereq_t)))
  		return -EFAULT;
  
  	dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
  	if (IS_ERR(dentry))
  		return PTR_ERR(dentry);
  
  	if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
  		error = -EPERM;
  		goto out;
  	}
  
  	if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
  		error = -EFAULT;
  		goto out;
  	}
  
  	error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
  				 fsd.fsd_dmstate);
  
  out:
  	dput(dentry);
  	return error;
  }
  
  long
  xfs_file_compat_ioctl(
  	struct file		*filp,
  	unsigned		cmd,
  	unsigned long		p)
  {
  	struct inode		*inode = file_inode(filp);
  	struct xfs_inode	*ip = XFS_I(inode);
  	struct xfs_mount	*mp = ip->i_mount;
  	void			__user *arg = (void __user *)p;
  	int			error;
  
  	trace_xfs_file_compat_ioctl(ip);
  
  	switch (cmd) {
  	/* No size or alignment issues on any arch */
  	case XFS_IOC_DIOINFO:
  	case XFS_IOC_FSGEOMETRY:
  	case XFS_IOC_FSGETXATTR:
  	case XFS_IOC_FSSETXATTR:
  	case XFS_IOC_FSGETXATTRA:
  	case XFS_IOC_FSSETDM:
  	case XFS_IOC_GETBMAP:
  	case XFS_IOC_GETBMAPA:
  	case XFS_IOC_GETBMAPX:
  	case XFS_IOC_FSCOUNTS:
  	case XFS_IOC_SET_RESBLKS:
  	case XFS_IOC_GET_RESBLKS:
  	case XFS_IOC_FSGROWFSLOG:
  	case XFS_IOC_GOINGDOWN:
  	case XFS_IOC_ERROR_INJECTION:
  	case XFS_IOC_ERROR_CLEARALL:
  	case FS_IOC_GETFSMAP:
  	case XFS_IOC_SCRUB_METADATA:
  		return xfs_file_ioctl(filp, cmd, p);
  #ifndef BROKEN_X86_ALIGNMENT
  	/* These are handled fine if no alignment issues */
  	case XFS_IOC_ALLOCSP:
  	case XFS_IOC_FREESP:
  	case XFS_IOC_RESVSP:
  	case XFS_IOC_UNRESVSP:
  	case XFS_IOC_ALLOCSP64:
  	case XFS_IOC_FREESP64:
  	case XFS_IOC_RESVSP64:
  	case XFS_IOC_UNRESVSP64:
  	case XFS_IOC_FSGEOMETRY_V1:
  	case XFS_IOC_FSGROWFSDATA:
  	case XFS_IOC_FSGROWFSRT:
  	case XFS_IOC_ZERO_RANGE:
  		return xfs_file_ioctl(filp, cmd, p);
  #else
  	case XFS_IOC_ALLOCSP_32:
  	case XFS_IOC_FREESP_32:
  	case XFS_IOC_ALLOCSP64_32:
  	case XFS_IOC_FREESP64_32:
  	case XFS_IOC_RESVSP_32:
  	case XFS_IOC_UNRESVSP_32:
  	case XFS_IOC_RESVSP64_32:
  	case XFS_IOC_UNRESVSP64_32:
  	case XFS_IOC_ZERO_RANGE_32: {
  		struct xfs_flock64	bf;
  
  		if (xfs_compat_flock64_copyin(&bf, arg))
  			return -EFAULT;
  		cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
  		return xfs_ioc_space(filp, cmd, &bf);
  	}
  	case XFS_IOC_FSGEOMETRY_V1_32:
  		return xfs_compat_ioc_fsgeometry_v1(mp, arg);
  	case XFS_IOC_FSGROWFSDATA_32: {
  		struct xfs_growfs_data	in;
  
  		if (xfs_compat_growfs_data_copyin(&in, arg))
  			return -EFAULT;
  		error = mnt_want_write_file(filp);
  		if (error)
  			return error;
  		error = xfs_growfs_data(mp, &in);
  		mnt_drop_write_file(filp);
  		return error;
  	}
  	case XFS_IOC_FSGROWFSRT_32: {
  		struct xfs_growfs_rt	in;
  
  		if (xfs_compat_growfs_rt_copyin(&in, arg))
  			return -EFAULT;
  		error = mnt_want_write_file(filp);
  		if (error)
  			return error;
  		error = xfs_growfs_rt(mp, &in);
  		mnt_drop_write_file(filp);
  		return error;
  	}
  #endif
  	/* long changes size, but xfs only copiese out 32 bits */
  	case XFS_IOC_GETXFLAGS_32:
  	case XFS_IOC_SETXFLAGS_32:
  	case XFS_IOC_GETVERSION_32:
  		cmd = _NATIVE_IOC(cmd, long);
  		return xfs_file_ioctl(filp, cmd, p);
  	case XFS_IOC_SWAPEXT_32: {
  		struct xfs_swapext	  sxp;
  		struct compat_xfs_swapext __user *sxu = arg;
  
  		/* Bulk copy in up to the sx_stat field, then copy bstat */
  		if (copy_from_user(&sxp, sxu,
  				   offsetof(struct xfs_swapext, sx_stat)) ||
  		    xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
  			return -EFAULT;
  		error = mnt_want_write_file(filp);
  		if (error)
  			return error;
  		error = xfs_ioc_swapext(&sxp);
  		mnt_drop_write_file(filp);
  		return error;
  	}
  	case XFS_IOC_FSBULKSTAT_32:
  	case XFS_IOC_FSBULKSTAT_SINGLE_32:
  	case XFS_IOC_FSINUMBERS_32:
  		return xfs_compat_ioc_bulkstat(mp, cmd, arg);
  	case XFS_IOC_FD_TO_HANDLE_32:
  	case XFS_IOC_PATH_TO_HANDLE_32:
  	case XFS_IOC_PATH_TO_FSHANDLE_32: {
  		struct xfs_fsop_handlereq	hreq;
  
  		if (xfs_compat_handlereq_copyin(&hreq, arg))
  			return -EFAULT;
  		cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
  		return xfs_find_handle(cmd, &hreq);
  	}
  	case XFS_IOC_OPEN_BY_HANDLE_32: {
  		struct xfs_fsop_handlereq	hreq;
  
  		if (xfs_compat_handlereq_copyin(&hreq, arg))
  			return -EFAULT;
  		return xfs_open_by_handle(filp, &hreq);
  	}
  	case XFS_IOC_READLINK_BY_HANDLE_32: {
  		struct xfs_fsop_handlereq	hreq;
  
  		if (xfs_compat_handlereq_copyin(&hreq, arg))
  			return -EFAULT;
  		return xfs_readlink_by_handle(filp, &hreq);
  	}
  	case XFS_IOC_ATTRLIST_BY_HANDLE_32:
  		return xfs_compat_attrlist_by_handle(filp, arg);
  	case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
  		return xfs_compat_attrmulti_by_handle(filp, arg);
  	case XFS_IOC_FSSETDM_BY_HANDLE_32:
  		return xfs_compat_fssetdm_by_handle(filp, arg);
  	default:
  		return -ENOIOCTLCMD;
  	}
  }
  