On Thu, Jan 06, 2022 at 02:19:22PM +0000, Ondrej Valousek wrote:
> > You also need to update the value of NFSD4_SUPPORTED_ATTRS_WORD1 to reflect the new support for FATTR4_WORD1_TIME_CREATE.
>
> Yes, I realized that one shortly after I sent the mail.
> Just going to try this patch:
Thanks!
Don't we want to vary support depending on the filesystem, though? Is
there a way to query that?
--b.
>
> [ondrejv@skynet19 /opt/kernel/linux-git/fs/nfsd]$ git diff
> diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
> index 5a93a5db4fb0..be47e1dd6da5 100644
> --- a/fs/nfsd/nfs4xdr.c
> +++ b/fs/nfsd/nfs4xdr.c
> @@ -3265,6 +3265,14 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
> p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec);
> *p++ = cpu_to_be32(stat.mtime.tv_nsec);
> }
> + /* support for btime here */
> + if (bmval1 & FATTR4_WORD1_TIME_CREATE) {
> + p = xdr_reserve_space(xdr, 12);
> + if (!p)
> + goto out_resource;
> + p = xdr_encode_hyper(p, (s64)stat.btime.tv_sec);
> + *p++ = cpu_to_be32(stat.btime.tv_nsec);
> + }
> if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
> struct kstat parent_stat;
> u64 ino = stat.ino;
> diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
> index 498e5a489826..5ef056ce7591 100644
> --- a/fs/nfsd/nfsd.h
> +++ b/fs/nfsd/nfsd.h
> @@ -364,7 +364,7 @@ void nfsd_lockd_shutdown(void);
> | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
> | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
> | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
> - | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
> + | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \
> | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
>
> #define NFSD4_SUPPORTED_ATTRS_WORD2 0
>
>
> ... will see
>
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