xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NFSv4.1: Clean up create_session

Browse Source 
Don't decode directly into the shared struct session

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2015-02-18 11:30:18 -08:00
parent 65d2918e71
commit 79969dd12e
4 changed files with 49 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
fs/nfs/nfs4proc.c
View File

@@ -7166,10 +7166,11 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
args->bc_attrs.max_reqs);
}
static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args,
struct nfs41_create_session_res *res)
{
struct nfs4_channel_attrs *sent = &args->fc_attrs;
struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
struct nfs4_channel_attrs *rcvd = &res->fc_attrs;
if (rcvd->max_resp_sz > sent->max_resp_sz)
return -EINVAL;
@@ -7188,10 +7189,11 @@ static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args
return 0;
}
static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args,
struct nfs41_create_session_res *res)
{
struct nfs4_channel_attrs *sent = &args->bc_attrs;
struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
struct nfs4_channel_attrs *rcvd = &res->bc_attrs;
if (rcvd->max_rqst_sz > sent->max_rqst_sz)
return -EINVAL;
@@ -7208,14 +7210,23 @@ static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args
}
static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
struct nfs4_session *session)
struct nfs41_create_session_res *res)
{
int ret;
ret = nfs4_verify_fore_channel_attrs(args, session);
ret = nfs4_verify_fore_channel_attrs(args, res);
if (ret)
return ret;
return nfs4_verify_back_channel_attrs(args, session);
return nfs4_verify_back_channel_attrs(args, res);
}
static void nfs4_update_session(struct nfs4_session *session,
struct nfs41_create_session_res *res)
{
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));
}
static int _nfs4_proc_create_session(struct nfs_client *clp,
@@ -7224,11 +7235,12 @@ static int _nfs4_proc_create_session(struct nfs_client *clp,
struct nfs4_session *session = clp->cl_session;
struct nfs41_create_session_args args = {
.client = clp,
.clientid = clp->cl_clientid,
.seqid = clp->cl_seqid,
.cb_program = NFS4_CALLBACK,
};
struct nfs41_create_session_res res = {
.client = clp,
};
struct nfs41_create_session_res res;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
.rpc_argp = &args,
@@ -7245,11 +7257,15 @@ static int _nfs4_proc_create_session(struct nfs_client *clp,
if (!status) {
/* Verify the session's negotiated channel_attrs values */
status = nfs4_verify_channel_attrs(&args, session);
status = nfs4_verify_channel_attrs(&args, &res);
/* Increment the clientid slot sequence id */
clp->cl_seqid++;
if (clp->cl_seqid == res.seqid)
clp->cl_seqid++;
if (status)
goto out;
nfs4_update_session(session, &res);
}
out:
return status;
}