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vfs: teach vfs_ioc_fssetxattr_check to check project id info

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Standardize the project id checks for FSSETXATTR.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Darrick J. Wong
2019-07-01 08:25:35 -07:00
parent 7b0e492e6b
commit f991492ed1
3 changed files with 13 additions and 42 deletions
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15
fs/xfs/xfs_ioctl.c
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@@ -1298,21 +1298,6 @@ xfs_ioctl_setattr_check_projid(
if (fa->fsx_projid > (uint16_t)-1 &&
!xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
return -EINVAL;
/*
* Project Quota ID state is only allowed to change from within the init
* namespace. Enforce that restriction only if we are trying to change
* the quota ID state. Everything else is allowed in user namespaces.
*/
if (current_user_ns() == &init_user_ns)
return 0;
if (xfs_get_projid(ip) != fa->fsx_projid)
return -EINVAL;
if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
return -EINVAL;
return 0;
}