linux-kernel - [PATCH 09/19] nfsd: print 64-bit timestamps in client_info

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Date:   Mon, 11 Nov 2019 21:16:29 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     linux-nfs@...r.kernel.org,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Chuck Lever <chuck.lever@...cle.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna.schumaker@...app.com>
Cc:     y2038@...ts.linaro.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 09/19] nfsd: print 64-bit timestamps in client_info_show

The nii_time field gets truncated to 'time_t' on 32-bit architectures
before printing.

Remove the use of 'struct timespec' to product the correct output
beyond 2038.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/nfsd/nfs4state.c | 5 ++---
 fs/nfsd/state.h     | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index a20795b5053c..2333924d7c6b 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2292,7 +2292,7 @@ static int client_info_show(struct seq_file *m, void *v)
 					clp->cl_nii_domain.len);
 		seq_printf(m, "\nImplementation name: ");
 		seq_quote_mem(m, clp->cl_nii_name.data, clp->cl_nii_name.len);
-		seq_printf(m, "\nImplementation time: [%ld, %ld]\n",
+		seq_printf(m, "\nImplementation time: [%lld, %ld]\n",
 			clp->cl_nii_time.tv_sec, clp->cl_nii_time.tv_nsec);
 	}
 	drop_client(clp);
@@ -2946,8 +2946,7 @@ static __be32 copy_impl_id(struct nfs4_client *clp,
 	xdr_netobj_dup(&clp->cl_nii_name, &exid->nii_name, GFP_KERNEL);
 	if (!clp->cl_nii_name.data)
 		return nfserr_jukebox;
-	clp->cl_nii_time.tv_sec = exid->nii_time.tv_sec;
-	clp->cl_nii_time.tv_nsec = exid->nii_time.tv_nsec;
+	clp->cl_nii_time = exid->nii_time;
 	return 0;
 }
 
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 46f56afb6cb8..ce32ba445343 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -320,7 +320,7 @@ struct nfs4_client {
 	/* NFSv4.1 client implementation id: */
 	struct xdr_netobj	cl_nii_domain;
 	struct xdr_netobj	cl_nii_name;
-	struct timespec		cl_nii_time;
+	struct timespec64	cl_nii_time;
 
 	/* for v4.0 and v4.1 callbacks: */
 	struct nfs4_cb_conn	cl_cb_conn;
-- 
2.20.0