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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-05-09 16:24:59 -0400
committerJ. Bruce Fields <bfields@redhat.com>2017-05-10 14:30:10 -0400
commitb26b78cb726007533d81fdf90a62e915002ef5c8 (patch)
tree0cf6c70af53aae987475f4723f6f47fdc5506a5d /fs/nfsd
parentf961e3f2acae94b727380c0b74e2d3954d0edf79 (diff)
downloadlinux-b26b78cb726007533d81fdf90a62e915002ef5c8.tar.bz2
nfsd: Fix up the "supattr_exclcreat" attributes
If an NFSv4 client asks us for the supattr_exclcreat, then we must not return attributes that are unsupported by this minor version. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Fixes: 75976de6556f ("NFSD: Return word2 bitmask if setting security..,") Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4xdr.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 8e9652f37f1f..26780d53a6f9 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2831,9 +2831,14 @@ out_acl:
}
#endif /* CONFIG_NFSD_PNFS */
if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
- status = nfsd4_encode_bitmap(xdr, NFSD_SUPPATTR_EXCLCREAT_WORD0,
- NFSD_SUPPATTR_EXCLCREAT_WORD1,
- NFSD_SUPPATTR_EXCLCREAT_WORD2);
+ u32 supp[3];
+
+ memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp));
+ supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0;
+ supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1;
+ supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2;
+
+ status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]);
if (status)
goto out;
}