On Mon, 2023-09-18 at 23:30 -0700, Dai Ngo wrote:
> The Linux NFS server strips the SUID and SGID from the file mode
> on ALLOCATE op.
>
> Modify _nfs42_proc_fallocate to add NFS_INO_REVAL_FORCED to
> nfs_set_cache_invalid's argument to force update of the file
> mode suid/sgid bit.
>
> Suggested-by: Trond Myklebust <trondmy@xxxxxxxxxxxxxxx>
> Signed-off-by: Dai Ngo <dai.ngo@xxxxxxxxxx>
> Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
> v3 -> v4: add Suggested-by and Reviewed-by tag.
>
> fs/nfs/nfs42proc.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
> index 63802d195556..9d2f07feeb29 100644
> --- a/fs/nfs/nfs42proc.c
> +++ b/fs/nfs/nfs42proc.c
> @@ -81,7 +81,8 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
> if (status == 0) {
> if (nfs_should_remove_suid(inode)) {
> spin_lock(&inode->i_lock);
> - nfs_set_cache_invalid(inode, NFS_INO_INVALID_MODE);
> + nfs_set_cache_invalid(inode,
> + NFS_INO_REVAL_FORCED | NFS_INO_INVALID_MODE);
> spin_unlock(&inode->i_lock);
> }
> status = nfs_post_op_update_inode_force_wcc(inode,
This fixes generic/683 and generic/684 for me, when nfsd has issued a
write delegation. This was posted some time ago. Is there some reason
this hasn't been merged yet?
Tested-by: Jeff Layton <jlayton@xxxxxxxxxx>
