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Commit ca29be75 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

vfs: teach vfs_ioc_fssetxattr_check to check extent size hints 



Move the extent size hint checks that aren't xfs-specific to the vfs.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
parent f991492e

fs/inode.c

+18 −0
Original line number Diff line number Diff line
@@ -2227,6 +2227,24 @@ int vfs_ioc_fssetxattr_check(struct inode *inode, const struct fsxattr *old_fa, 
			return -EINVAL;

	}



	/* Check extent size hints. */

	if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(inode->i_mode))

		return -EINVAL;



	if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&

			!S_ISDIR(inode->i_mode))

		return -EINVAL;



	if ((fa->fsx_xflags & FS_XFLAG_COWEXTSIZE) &&

	    !S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))

		return -EINVAL;



	/* Extent size hints of zero turn off the flags. */

	if (fa->fsx_extsize == 0)

		fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);

	if (fa->fsx_cowextsize == 0)

		fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;



	return 0;

}

EXPORT_SYMBOL(vfs_ioc_fssetxattr_check);

fs/xfs/xfs_ioctl.c

+29 −41
Original line number Diff line number Diff line
@@ -1200,21 +1200,15 @@ xfs_ioctl_setattr_check_extsize( 
	struct fsxattr		*fa)

{

	struct xfs_mount	*mp = ip->i_mount;



	if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))

		return -EINVAL;



	if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&

	    !S_ISDIR(VFS_I(ip)->i_mode))

		return -EINVAL;

	xfs_extlen_t		size;

	xfs_fsblock_t		extsize_fsb;



	if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&

	    ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))

		return -EINVAL;



	if (fa->fsx_extsize != 0) {

		xfs_extlen_t    size;

		xfs_fsblock_t   extsize_fsb;

	if (fa->fsx_extsize == 0)

		return 0;



	extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);

	if (extsize_fsb > MAXEXTLEN)
@@ -1231,8 +1225,6 @@ xfs_ioctl_setattr_check_extsize( 


	if (fa->fsx_extsize % size)

		return -EINVAL;

	} else

		fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);



	return 0;

}
@@ -1258,6 +1250,8 @@ xfs_ioctl_setattr_check_cowextsize( 
	struct fsxattr		*fa)

{

	struct xfs_mount	*mp = ip->i_mount;

	xfs_extlen_t		size;

	xfs_fsblock_t		cowextsize_fsb;



	if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))

		return 0;
@@ -1266,12 +1260,8 @@ xfs_ioctl_setattr_check_cowextsize( 
	    ip->i_d.di_version != 3)

		return -EINVAL;



	if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))

		return -EINVAL;



	if (fa->fsx_cowextsize != 0) {

		xfs_extlen_t    size;

		xfs_fsblock_t   cowextsize_fsb;

	if (fa->fsx_cowextsize == 0)

		return 0;



	cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);

	if (cowextsize_fsb > MAXEXTLEN)
@@ -1283,8 +1273,6 @@ xfs_ioctl_setattr_check_cowextsize( 


	if (fa->fsx_cowextsize % size)

		return -EINVAL;

	} else

		fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;



	return 0;

}