Commit fba9760a authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: wire up the v5 inumbers ioctl 



Wire up the v5 INUMBERS ioctl.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
parent 0448b6f4

fs/xfs/libxfs/xfs_fs.h

+8 −0
Original line number Diff line number Diff line
@@ -478,6 +478,13 @@ struct xfs_bulkstat_req { 
#define XFS_BULKSTAT_REQ_SIZE(nr)	(sizeof(struct xfs_bulkstat_req) + \

					 (nr) * sizeof(struct xfs_bulkstat))



struct xfs_inumbers_req {

	struct xfs_bulk_ireq	hdr;

	struct xfs_inumbers	inumbers[];

};

#define XFS_INUMBERS_REQ_SIZE(nr)	(sizeof(struct xfs_inumbers_req) + \

					 (nr) * sizeof(struct xfs_inumbers))



/*

 * Error injection.

 */
@@ -780,6 +787,7 @@ struct xfs_scrub_metadata { 
#define XFS_IOC_GOINGDOWN	     _IOR ('X', 125, uint32_t)

#define XFS_IOC_FSGEOMETRY	     _IOR ('X', 126, struct xfs_fsop_geom)

#define XFS_IOC_BULKSTAT	     _IOR ('X', 127, struct xfs_bulkstat_req)

#define XFS_IOC_INUMBERS	     _IOR ('X', 128, struct xfs_inumbers_req)

/*	XFS_IOC_GETFSUUID ---------- deprecated 140	 */

fs/xfs/xfs_ioctl.c

+52 −0
Original line number Diff line number Diff line
@@ -913,6 +913,56 @@ xfs_ioc_bulkstat( 
	return 0;

}



STATIC int

xfs_inumbers_fmt(

	struct xfs_ibulk		*breq,

	const struct xfs_inumbers	*igrp)

{

	if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers)))

		return -EFAULT;

	return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers));

}



/* Handle the v5 inumbers ioctl. */

STATIC int

xfs_ioc_inumbers(

	struct xfs_mount		*mp,

	unsigned int			cmd,

	struct xfs_inumbers_req __user	*arg)

{

	struct xfs_bulk_ireq		hdr;

	struct xfs_ibulk		breq = {

		.mp			= mp,

	};

	int				error;



	if (!capable(CAP_SYS_ADMIN))

		return -EPERM;



	if (XFS_FORCED_SHUTDOWN(mp))

		return -EIO;



	if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))

		return -EFAULT;



	error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers);

	if (error == XFS_ITER_ABORT)

		goto out_teardown;

	if (error < 0)

		return error;



	error = xfs_inumbers(&breq, xfs_inumbers_fmt);

	if (error)

		return error;



out_teardown:

	xfs_bulk_ireq_teardown(&hdr, &breq);

	if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))

		return -EFAULT;



	return 0;

}



STATIC int

xfs_ioc_fsgeometry(

	struct xfs_mount	*mp,
@@ -2079,6 +2129,8 @@ xfs_file_ioctl( 


	case XFS_IOC_BULKSTAT:

		return xfs_ioc_bulkstat(mp, cmd, arg);

	case XFS_IOC_INUMBERS:

		return xfs_ioc_inumbers(mp, cmd, arg);



	case XFS_IOC_FSGEOMETRY_V1:

		return xfs_ioc_fsgeometry(mp, arg, 3);

fs/xfs/xfs_ioctl32.c

+1 −0
Original line number Diff line number Diff line
@@ -575,6 +575,7 @@ xfs_file_compat_ioctl( 
	case FS_IOC_GETFSMAP:

	case XFS_IOC_SCRUB_METADATA:

	case XFS_IOC_BULKSTAT:

	case XFS_IOC_INUMBERS:

		return xfs_file_ioctl(filp, cmd, p);

#if !defined(BROKEN_X86_ALIGNMENT) || defined(CONFIG_X86_X32)

	/*

fs/xfs/xfs_ondisk.h

+1 −0
Original line number Diff line number Diff line
@@ -150,6 +150,7 @@ xfs_check_ondisk_structs(void) 
	XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat,		192);

	XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers,		24);

	XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat_req,		64);

	XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers_req,		64);

}



#endif /* __XFS_ONDISK_H */