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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-18 22:34:58 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-18 23:30:47 +0300 |
| commit | b1c0df5fadc917ba3724ae9fdfcc6f97db34736a (patch) | |
| tree | 0f369742e4d930a2ae0de2bcd03373a47d7f0586 /fs/nfs/nfs4proc.c | |
| parent | 79969dd12e8756f64a999992c0536ccd91bf6e54 (diff) | |
| download | linux-b1c0df5fadc917ba3724ae9fdfcc6f97db34736a.tar.xz | |
NFSv4.1: Don't set up a backchannel if the server didn't agree to do so
If the server doesn't agree to out backchannel setup request, then
don't set one up.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 006bfa3da55b..59853797825c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7195,6 +7195,8 @@ static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args struct nfs4_channel_attrs *sent = &args->bc_attrs; struct nfs4_channel_attrs *rcvd = &res->bc_attrs; + if (!(res->flags & SESSION4_BACK_CHAN)) + goto out; if (rcvd->max_rqst_sz > sent->max_rqst_sz) return -EINVAL; if (rcvd->max_resp_sz < sent->max_resp_sz) @@ -7206,6 +7208,7 @@ static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args return -EINVAL; if (rcvd->max_reqs != sent->max_reqs) return -EINVAL; +out: return 0; } @@ -7226,7 +7229,9 @@ static void nfs4_update_session(struct nfs4_session *session, nfs4_copy_sessionid(&session->sess_id, &res->sessionid); session->flags = res->flags; memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); - memcpy(&session->bc_attrs, &res->bc_attrs, sizeof(session->bc_attrs)); + if (res->flags & SESSION4_BACK_CHAN) + memcpy(&session->bc_attrs, &res->bc_attrs, + sizeof(session->bc_attrs)); } static int _nfs4_proc_create_session(struct nfs_client *clp, |