diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2022-05-20 07:42:15 +0300 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2022-05-20 07:42:15 +0300 |
| commit | 85d76aec6bbb3dd0131511e73d48b2816e7ab8de (patch) | |
| tree | 4266f400b5d9a8a381aa9a85fcbf4ae22c9f06e8 /fs/xfs/xfs_attr_item.c | |
| parent | 356cb708ea1886d1f7734cc1a8c4708b35ce5d77 (diff) | |
| download | linux-85d76aec6bbb3dd0131511e73d48b2816e7ab8de.tar.xz | |
xfs: reject unknown xattri log item filter flags during recovery
Make sure we screen the "attr flags" field of recovered xattr intent log
items to reject flag bits that we don't know about. This is really the
attr *filter* field from xfs_da_args, so rename the field and create
a mask to make checking for invalid bits easier.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_attr_item.c')
| -rw-r--r-- | fs/xfs/xfs_attr_item.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c index ae227a56bbed..fd0a74f3ef45 100644 --- a/fs/xfs/xfs_attr_item.c +++ b/fs/xfs/xfs_attr_item.c @@ -353,7 +353,8 @@ xfs_attr_log_item( attrp->alfi_op_flags = attr->xattri_op_flags; attrp->alfi_value_len = attr->xattri_da_args->valuelen; attrp->alfi_name_len = attr->xattri_da_args->namelen; - attrp->alfi_attr_flags = attr->xattri_da_args->attr_filter; + ASSERT(!(attr->xattri_da_args->attr_filter & ~XFS_ATTRI_FILTER_MASK)); + attrp->alfi_attr_filter = attr->xattri_da_args->attr_filter; memcpy(attrip->attri_name, attr->xattri_da_args->name, attr->xattri_da_args->namelen); @@ -500,6 +501,9 @@ xfs_attri_validate( if (attrp->alfi_op_flags & ~XFS_ATTR_OP_FLAGS_TYPE_MASK) return false; + if (attrp->alfi_attr_filter & ~XFS_ATTRI_FILTER_MASK) + return false; + /* alfi_op_flags should be either a set or remove */ switch (op) { case XFS_ATTR_OP_FLAGS_SET: @@ -569,7 +573,7 @@ xfs_attri_item_recover( args->name = attrip->attri_name; args->namelen = attrp->alfi_name_len; args->hashval = xfs_da_hashname(args->name, args->namelen); - args->attr_filter = attrp->alfi_attr_flags; + args->attr_filter = attrp->alfi_attr_filter & XFS_ATTRI_FILTER_MASK; args->op_flags = XFS_DA_OP_RECOVERY | XFS_DA_OP_OKNOENT; switch (attr->xattri_op_flags) { @@ -658,7 +662,7 @@ xfs_attri_item_relog( new_attrp->alfi_op_flags = old_attrp->alfi_op_flags; new_attrp->alfi_value_len = old_attrp->alfi_value_len; new_attrp->alfi_name_len = old_attrp->alfi_name_len; - new_attrp->alfi_attr_flags = old_attrp->alfi_attr_flags; + new_attrp->alfi_attr_filter = old_attrp->alfi_attr_filter; memcpy(new_attrip->attri_name, old_attrip->attri_name, new_attrip->attri_name_len); |