예제 #1
0
int
xfs_ioctl(
	bhv_desc_t		*bdp,
	struct inode		*inode,
	struct file		*filp,
	int			ioflags,
	unsigned int		cmd,
	unsigned long		arg)
{
	int			error;
	vnode_t			*vp;
	xfs_inode_t		*ip;
	xfs_mount_t		*mp;

	vp = LINVFS_GET_VP(inode);

	vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address);

	ip = XFS_BHVTOI(bdp);
	mp = ip->i_mount;

	switch (cmd) {

	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:
		/*
		 * Only allow the sys admin to reserve space unless
		 * unwritten extents are enabled.
		 */
		if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) &&
		    !capable(CAP_SYS_ADMIN))
			return -EPERM;

		return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg);

	case XFS_IOC_DIOINFO: {
		struct dioattr	da;

		da.d_miniosz = mp->m_sb.sb_blocksize;
		da.d_mem = mp->m_sb.sb_blocksize;

		/*
		 * this only really needs to be BBSIZE.
		 * it is set to the file system block size to
		 * avoid having to do block zeroing on short writes.
		 */
		da.d_maxiosz = XFS_FSB_TO_B(mp,
				XFS_B_TO_FSBT(mp, KIO_MAX_ATOMIC_IO << 10));

		if (copy_to_user((struct dioattr *)arg, &da, sizeof(da)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_FSBULKSTAT_SINGLE:
	case XFS_IOC_FSBULKSTAT:
	case XFS_IOC_FSINUMBERS:
		return xfs_ioc_bulkstat(mp, cmd, arg);

	case XFS_IOC_FSGEOMETRY_V1:
		return xfs_ioc_fsgeometry_v1(mp, arg);

	case XFS_IOC_FSGEOMETRY:
		return xfs_ioc_fsgeometry(mp, arg);

	case XFS_IOC_GETVERSION:
	case XFS_IOC_GETXFLAGS:
	case XFS_IOC_SETXFLAGS:
	case XFS_IOC_FSGETXATTR:
	case XFS_IOC_FSSETXATTR:
	case XFS_IOC_FSGETXATTRA:
		return xfs_ioc_xattr(vp, ip, filp, cmd, arg);

	case XFS_IOC_FSSETDM: {
		struct fsdmidata	dmi;

		if (copy_from_user(&dmi, (struct fsdmidata *)arg, sizeof(dmi)))
			return -XFS_ERROR(EFAULT);

		error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate,
							NULL);
		return -error;
	}

	case XFS_IOC_GETBMAP:
	case XFS_IOC_GETBMAPA:
		return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg);

	case XFS_IOC_GETBMAPX:
		return xfs_ioc_getbmapx(bdp, arg);

	case XFS_IOC_FD_TO_HANDLE:
	case XFS_IOC_PATH_TO_HANDLE:
	case XFS_IOC_PATH_TO_FSHANDLE:
		return xfs_find_handle(cmd, arg);

	case XFS_IOC_OPEN_BY_HANDLE:
		return xfs_open_by_handle(mp, arg, filp, inode);

	case XFS_IOC_FSSETDM_BY_HANDLE:
		return xfs_fssetdm_by_handle(mp, arg, filp, inode);

	case XFS_IOC_READLINK_BY_HANDLE:
		return xfs_readlink_by_handle(mp, arg, filp, inode);

	case XFS_IOC_ATTRLIST_BY_HANDLE:
		return xfs_attrlist_by_handle(mp, arg, filp, inode);

	case XFS_IOC_ATTRMULTI_BY_HANDLE:
		return xfs_attrmulti_by_handle(mp, arg, filp, inode);

	case XFS_IOC_SWAPEXT: {
		error = xfs_swapext((struct xfs_swapext *)arg);
		return -error;
	}

	case XFS_IOC_FSCOUNTS: {
		xfs_fsop_counts_t out;

		error = xfs_fs_counts(mp, &out);
		if (error)
			return -error;

		if (copy_to_user((char *)arg, &out, sizeof(out)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_SET_RESBLKS: {
		xfs_fsop_resblks_t inout;
		__uint64_t	   in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&inout, (char *)arg, sizeof(inout)))
			return -XFS_ERROR(EFAULT);

		/* input parameter is passed in resblks field of structure */
		in = inout.resblks;
		error = xfs_reserve_blocks(mp, &in, &inout);
		if (error)
			return -error;

		if (copy_to_user((char *)arg, &inout, sizeof(inout)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_GET_RESBLKS: {
		xfs_fsop_resblks_t out;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		error = xfs_reserve_blocks(mp, NULL, &out);
		if (error)
			return -error;

		if (copy_to_user((char *)arg, &out, sizeof(out)))
			return -XFS_ERROR(EFAULT);

		return 0;
	}

	case XFS_IOC_FSGROWFSDATA: {
		xfs_growfs_data_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, (char *)arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_growfs_data(mp, &in);
		return -error;
	}

	case XFS_IOC_FSGROWFSLOG: {
		xfs_growfs_log_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, (char *)arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_growfs_log(mp, &in);
		return -error;
	}

	case XFS_IOC_FSGROWFSRT: {
		xfs_growfs_rt_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, (char *)arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_growfs_rt(mp, &in);
		return -error;
	}

	case XFS_IOC_FREEZE:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (vp->v_vfsp->vfs_frozen == SB_UNFROZEN) {
			freeze_bdev(mp->m_ddev_targp->pbr_bdev);
			if (mp->m_rtdev_targp)
				freeze_bdev(mp->m_rtdev_targp->pbr_bdev);
		}
		return 0;

	case XFS_IOC_THAW:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (vp->v_vfsp->vfs_frozen != SB_UNFROZEN) {
			thaw_bdev(mp->m_ddev_targp->pbr_bdev, inode->i_sb);
			if (mp->m_rtdev_targp)
				thaw_bdev(mp->m_ddev_targp->pbr_bdev, NULL);
		}
		return 0;

	case XFS_IOC_GOINGDOWN: {
		__uint32_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (get_user(in, (__uint32_t *)arg))
			return -XFS_ERROR(EFAULT);

		error = xfs_fs_goingdown(mp, in);
		return -error;
	}

	case XFS_IOC_ERROR_INJECTION: {
		xfs_error_injection_t in;

		if (!capable(CAP_SYS_ADMIN))
			return EPERM;

		if (copy_from_user(&in, (char *)arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_errortag_add(in.errtag, mp);
		return -error;
	}

	case XFS_IOC_ERROR_CLEARALL:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		error = xfs_errortag_clearall(mp);
		return -error;

	default:
		return -ENOTTY;
	}
}
예제 #2
0
파일: xfs_ioctl.c 프로젝트: AiWinters/linux
/*
 * Note: some of the ioctl's return positive numbers as a
 * byte count indicating success, such as readlink_by_handle.
 * So we don't "sign flip" like most other routines.  This means
 * true errors need to be returned as a negative value.
 */
long
xfs_file_ioctl(
	struct file		*filp,
	unsigned int		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			ioflags = 0;
	int			error;

	if (filp->f_mode & FMODE_NOCMTIME)
		ioflags |= IO_INVIS;

	trace_xfs_file_ioctl(ip);

	switch (cmd) {
	case FITRIM:
		return xfs_ioc_trim(mp, arg);
	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_ZERO_RANGE: {
		xfs_flock64_t		bf;

		if (copy_from_user(&bf, arg, sizeof(bf)))
			return -XFS_ERROR(EFAULT);
		return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
	}
	case XFS_IOC_DIOINFO: {
		struct dioattr	da;
		xfs_buftarg_t	*target =
			XFS_IS_REALTIME_INODE(ip) ?
			mp->m_rtdev_targp : mp->m_ddev_targp;

		da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
		da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);

		if (copy_to_user(arg, &da, sizeof(da)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_FSBULKSTAT_SINGLE:
	case XFS_IOC_FSBULKSTAT:
	case XFS_IOC_FSINUMBERS:
		return xfs_ioc_bulkstat(mp, cmd, arg);

	case XFS_IOC_FSGEOMETRY_V1:
		return xfs_ioc_fsgeometry_v1(mp, arg);

	case XFS_IOC_FSGEOMETRY:
		return xfs_ioc_fsgeometry(mp, arg);

	case XFS_IOC_GETVERSION:
		return put_user(inode->i_generation, (int __user *)arg);

	case XFS_IOC_FSGETXATTR:
		return xfs_ioc_fsgetxattr(ip, 0, arg);
	case XFS_IOC_FSGETXATTRA:
		return xfs_ioc_fsgetxattr(ip, 1, arg);
	case XFS_IOC_FSSETXATTR:
		return xfs_ioc_fssetxattr(ip, filp, arg);
	case XFS_IOC_GETXFLAGS:
		return xfs_ioc_getxflags(ip, arg);
	case XFS_IOC_SETXFLAGS:
		return xfs_ioc_setxflags(ip, filp, arg);

	case XFS_IOC_FSSETDM: {
		struct fsdmidata	dmi;

		if (copy_from_user(&dmi, arg, sizeof(dmi)))
			return -XFS_ERROR(EFAULT);

		error = mnt_want_write_file(filp);
		if (error)
			return error;

		error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
				dmi.fsd_dmstate);
		mnt_drop_write_file(filp);
		return -error;
	}

	case XFS_IOC_GETBMAP:
	case XFS_IOC_GETBMAPA:
		return xfs_ioc_getbmap(ip, ioflags, cmd, arg);

	case XFS_IOC_GETBMAPX:
		return xfs_ioc_getbmapx(ip, arg);

	case XFS_IOC_FD_TO_HANDLE:
	case XFS_IOC_PATH_TO_HANDLE:
	case XFS_IOC_PATH_TO_FSHANDLE: {
		xfs_fsop_handlereq_t	hreq;

		if (copy_from_user(&hreq, arg, sizeof(hreq)))
			return -XFS_ERROR(EFAULT);
		return xfs_find_handle(cmd, &hreq);
	}
	case XFS_IOC_OPEN_BY_HANDLE: {
		xfs_fsop_handlereq_t	hreq;

		if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
			return -XFS_ERROR(EFAULT);
		return xfs_open_by_handle(filp, &hreq);
	}
	case XFS_IOC_FSSETDM_BY_HANDLE:
		return xfs_fssetdm_by_handle(filp, arg);

	case XFS_IOC_READLINK_BY_HANDLE: {
		xfs_fsop_handlereq_t	hreq;

		if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
			return -XFS_ERROR(EFAULT);
		return xfs_readlink_by_handle(filp, &hreq);
	}
	case XFS_IOC_ATTRLIST_BY_HANDLE:
		return xfs_attrlist_by_handle(filp, arg);

	case XFS_IOC_ATTRMULTI_BY_HANDLE:
		return xfs_attrmulti_by_handle(filp, arg);

	case XFS_IOC_SWAPEXT: {
		struct xfs_swapext	sxp;

		if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
			return -XFS_ERROR(EFAULT);
		error = mnt_want_write_file(filp);
		if (error)
			return error;
		error = xfs_swapext(&sxp);
		mnt_drop_write_file(filp);
		return -error;
	}

	case XFS_IOC_FSCOUNTS: {
		xfs_fsop_counts_t out;

		error = xfs_fs_counts(mp, &out);
		if (error)
			return -error;

		if (copy_to_user(arg, &out, sizeof(out)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_SET_RESBLKS: {
		xfs_fsop_resblks_t inout;
		__uint64_t	   in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (mp->m_flags & XFS_MOUNT_RDONLY)
			return -XFS_ERROR(EROFS);

		if (copy_from_user(&inout, arg, sizeof(inout)))
			return -XFS_ERROR(EFAULT);

		error = mnt_want_write_file(filp);
		if (error)
			return error;

		/* input parameter is passed in resblks field of structure */
		in = inout.resblks;
		error = xfs_reserve_blocks(mp, &in, &inout);
		mnt_drop_write_file(filp);
		if (error)
			return -error;

		if (copy_to_user(arg, &inout, sizeof(inout)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_GET_RESBLKS: {
		xfs_fsop_resblks_t out;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		error = xfs_reserve_blocks(mp, NULL, &out);
		if (error)
			return -error;

		if (copy_to_user(arg, &out, sizeof(out)))
			return -XFS_ERROR(EFAULT);

		return 0;
	}

	case XFS_IOC_FSGROWFSDATA: {
		xfs_growfs_data_t in;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(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_FSGROWFSLOG: {
		xfs_growfs_log_t in;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = mnt_want_write_file(filp);
		if (error)
			return error;
		error = xfs_growfs_log(mp, &in);
		mnt_drop_write_file(filp);
		return -error;
	}

	case XFS_IOC_FSGROWFSRT: {
		xfs_growfs_rt_t in;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = mnt_want_write_file(filp);
		if (error)
			return error;
		error = xfs_growfs_rt(mp, &in);
		mnt_drop_write_file(filp);
		return -error;
	}

	case XFS_IOC_GOINGDOWN: {
		__uint32_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (get_user(in, (__uint32_t __user *)arg))
			return -XFS_ERROR(EFAULT);

		error = xfs_fs_goingdown(mp, in);
		return -error;
	}

	case XFS_IOC_ERROR_INJECTION: {
		xfs_error_injection_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_errortag_add(in.errtag, mp);
		return -error;
	}

	case XFS_IOC_ERROR_CLEARALL:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		error = xfs_errortag_clearall(mp, 1);
		return -error;

	case XFS_IOC_FREE_EOFBLOCKS: {
		struct xfs_eofblocks eofb;

		if (copy_from_user(&eofb, arg, sizeof(eofb)))
			return -XFS_ERROR(EFAULT);

		if (eofb.eof_version != XFS_EOFBLOCKS_VERSION)
			return -XFS_ERROR(EINVAL);

		if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID)
			return -XFS_ERROR(EINVAL);

		if (memchr_inv(&eofb.pad32, 0, sizeof(eofb.pad32)) ||
		    memchr_inv(eofb.pad64, 0, sizeof(eofb.pad64)))
			return -XFS_ERROR(EINVAL);

		error = xfs_icache_free_eofblocks(mp, &eofb);
		return -error;
	}

	default:
		return -ENOTTY;
	}
}
예제 #3
0
파일: xfs_ioctl.c 프로젝트: Mr-Aloof/wl500g
int
xfs_ioctl(
	xfs_inode_t		*ip,
	struct file		*filp,
	int			ioflags,
	unsigned int		cmd,
	void			__user *arg)
{
	struct inode		*inode = filp->f_path.dentry->d_inode;
	xfs_mount_t		*mp = ip->i_mount;
	int			error;

	xfs_itrace_entry(XFS_I(inode));
	switch (cmd) {

	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:
		/*
		 * Only allow the sys admin to reserve space unless
		 * unwritten extents are enabled.
		 */
		if (!xfs_sb_version_hasextflgbit(&mp->m_sb) &&
		    !capable(CAP_SYS_ADMIN))
			return -EPERM;

		return xfs_ioc_space(ip, inode, filp, ioflags, cmd, arg);

	case XFS_IOC_DIOINFO: {
		struct dioattr	da;
		xfs_buftarg_t	*target =
			XFS_IS_REALTIME_INODE(ip) ?
			mp->m_rtdev_targp : mp->m_ddev_targp;

		da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
		da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);

		if (copy_to_user(arg, &da, sizeof(da)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_FSBULKSTAT_SINGLE:
	case XFS_IOC_FSBULKSTAT:
	case XFS_IOC_FSINUMBERS:
		return xfs_ioc_bulkstat(mp, cmd, arg);

	case XFS_IOC_FSGEOMETRY_V1:
		return xfs_ioc_fsgeometry_v1(mp, arg);

	case XFS_IOC_FSGEOMETRY:
		return xfs_ioc_fsgeometry(mp, arg);

	case XFS_IOC_GETVERSION:
		return put_user(inode->i_generation, (int __user *)arg);

	case XFS_IOC_FSGETXATTR:
		return xfs_ioc_fsgetxattr(ip, 0, arg);
	case XFS_IOC_FSGETXATTRA:
		return xfs_ioc_fsgetxattr(ip, 1, arg);
	case XFS_IOC_FSSETXATTR:
		return xfs_ioc_fssetxattr(ip, filp, arg);
	case XFS_IOC_GETXFLAGS:
		return xfs_ioc_getxflags(ip, arg);
	case XFS_IOC_SETXFLAGS:
		return xfs_ioc_setxflags(ip, filp, arg);

	case XFS_IOC_FSSETDM: {
		struct fsdmidata	dmi;

		if (copy_from_user(&dmi, arg, sizeof(dmi)))
			return -XFS_ERROR(EFAULT);

		error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
				dmi.fsd_dmstate);
		return -error;
	}

	case XFS_IOC_GETBMAP:
	case XFS_IOC_GETBMAPA:
		return xfs_ioc_getbmap(ip, ioflags, cmd, arg);

	case XFS_IOC_GETBMAPX:
		return xfs_ioc_getbmapx(ip, arg);

	case XFS_IOC_FD_TO_HANDLE:
	case XFS_IOC_PATH_TO_HANDLE:
	case XFS_IOC_PATH_TO_FSHANDLE:
		return xfs_find_handle(cmd, arg);

	case XFS_IOC_OPEN_BY_HANDLE:
		return xfs_open_by_handle(mp, arg, filp, inode);

	case XFS_IOC_FSSETDM_BY_HANDLE:
		return xfs_fssetdm_by_handle(mp, arg, inode);

	case XFS_IOC_READLINK_BY_HANDLE:
		return xfs_readlink_by_handle(mp, arg, inode);

	case XFS_IOC_ATTRLIST_BY_HANDLE:
		return xfs_attrlist_by_handle(mp, arg, inode);

	case XFS_IOC_ATTRMULTI_BY_HANDLE:
		return xfs_attrmulti_by_handle(mp, arg, inode);

	case XFS_IOC_SWAPEXT: {
		error = xfs_swapext((struct xfs_swapext __user *)arg);
		return -error;
	}

	case XFS_IOC_FSCOUNTS: {
		xfs_fsop_counts_t out;

		error = xfs_fs_counts(mp, &out);
		if (error)
			return -error;

		if (copy_to_user(arg, &out, sizeof(out)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_SET_RESBLKS: {
		xfs_fsop_resblks_t inout;
		__uint64_t	   in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&inout, arg, sizeof(inout)))
			return -XFS_ERROR(EFAULT);

		/* input parameter is passed in resblks field of structure */
		in = inout.resblks;
		error = xfs_reserve_blocks(mp, &in, &inout);
		if (error)
			return -error;

		if (copy_to_user(arg, &inout, sizeof(inout)))
			return -XFS_ERROR(EFAULT);
		return 0;
	}

	case XFS_IOC_GET_RESBLKS: {
		xfs_fsop_resblks_t out;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		error = xfs_reserve_blocks(mp, NULL, &out);
		if (error)
			return -error;

		if (copy_to_user(arg, &out, sizeof(out)))
			return -XFS_ERROR(EFAULT);

		return 0;
	}

	case XFS_IOC_FSGROWFSDATA: {
		xfs_growfs_data_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_growfs_data(mp, &in);
		return -error;
	}

	case XFS_IOC_FSGROWFSLOG: {
		xfs_growfs_log_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_growfs_log(mp, &in);
		return -error;
	}

	case XFS_IOC_FSGROWFSRT: {
		xfs_growfs_rt_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_growfs_rt(mp, &in);
		return -error;
	}

	case XFS_IOC_FREEZE:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (inode->i_sb->s_frozen == SB_UNFROZEN)
			freeze_bdev(inode->i_sb->s_bdev);
		return 0;

	case XFS_IOC_THAW:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;
		if (inode->i_sb->s_frozen != SB_UNFROZEN)
			thaw_bdev(inode->i_sb->s_bdev, inode->i_sb);
		return 0;

	case XFS_IOC_GOINGDOWN: {
		__uint32_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (get_user(in, (__uint32_t __user *)arg))
			return -XFS_ERROR(EFAULT);

		error = xfs_fs_goingdown(mp, in);
		return -error;
	}

	case XFS_IOC_ERROR_INJECTION: {
		xfs_error_injection_t in;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&in, arg, sizeof(in)))
			return -XFS_ERROR(EFAULT);

		error = xfs_errortag_add(in.errtag, mp);
		return -error;
	}

	case XFS_IOC_ERROR_CLEARALL:
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		error = xfs_errortag_clearall(mp, 1);
		return -error;

	default:
		return -ENOTTY;
	}
}