diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-01-07 15:25:38 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-09 10:55:18 -0800 |
| commit | 84fd081f8ae92e05ace47d24e58f26f7af2994c7 (patch) | |
| tree | 4d8e0e911e49fbaaa2d3db20e4ab4f5337e3d379 /fs/xfs | |
| parent | 953aa9d136f53e226448dbd801a905c28f8071bf (diff) | |
| download | linux-84fd081f8ae92e05ace47d24e58f26f7af2994c7.tar.bz2 | |
xfs: reject invalid flags combinations in XFS_IOC_ATTRMULTI_BY_HANDLE
While the flags field in the ABI and the on-disk format allows for
multiple namespace flags, that is a logically invalid combination that
scrub complains about. Reject it at the ioctl level, as all other
interface already get this right at higher levels.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 5 | ||||
| -rw-r--r-- | fs/xfs/xfs_ioctl32.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index edfbdb8f85e2..17b4a981be4d 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -462,6 +462,11 @@ xfs_attrmulti_by_handle( error = 0; for (i = 0; i < am_hreq.opcount; i++) { + if ((ops[i].am_flags & ATTR_ROOT) && + (ops[i].am_flags & ATTR_SECURE)) { + ops[i].am_error = -EINVAL; + continue; + } ops[i].am_flags &= ~ATTR_KERNEL_FLAGS; ops[i].am_error = strncpy_from_user((char *)attr_name, diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index 20b3edc10f48..769581a79c58 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -450,6 +450,11 @@ xfs_compat_attrmulti_by_handle( error = 0; for (i = 0; i < am_hreq.opcount; i++) { + if ((ops[i].am_flags & ATTR_ROOT) && + (ops[i].am_flags & ATTR_SECURE)) { + ops[i].am_error = -EINVAL; + continue; + } ops[i].am_flags &= ~ATTR_KERNEL_FLAGS; ops[i].am_error = strncpy_from_user((char *)attr_name, |