net/sunrpc/auth_tls.c
Source file repositories/reference/linux-study-clean/net/sunrpc/auth_tls.c
File Facts
- System
- Linux kernel
- Corpus path
net/sunrpc/auth_tls.c- Extension
.c- Size
- 3963 bytes
- Lines
- 176
- Domain
- Networking Core
- Bucket
- Sockets, Protocols, Packet Path, And Network Policy
- Inferred role
- Networking Core: implementation source
- Status
- source implementation candidate
Why This File Exists
Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/types.hlinux/module.hlinux/sunrpc/clnt.h
Detected Declarations
function tls_encode_probefunction rpc_tls_probe_call_preparefunction rpc_tls_probe_call_donefunction tls_probefunction tls_destroyfunction tls_destroy_credfunction tls_marshalfunction tls_refreshfunction tls_validate
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2021, 2022 Oracle. All rights reserved.
*
* The AUTH_TLS credential is used only to probe a remote peer
* for RPC-over-TLS support.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/sunrpc/clnt.h>
static const char *starttls_token = "STARTTLS";
static const size_t starttls_len = 8;
static struct rpc_auth tls_auth;
static struct rpc_cred tls_cred;
static void tls_encode_probe(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
const void *obj)
{
}
static int tls_decode_probe(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
void *obj)
{
return 0;
}
static const struct rpc_procinfo rpcproc_tls_probe = {
.p_encode = tls_encode_probe,
.p_decode = tls_decode_probe,
};
static void rpc_tls_probe_call_prepare(struct rpc_task *task, void *data)
{
task->tk_flags &= ~RPC_TASK_NO_RETRANS_TIMEOUT;
rpc_call_start(task);
}
static void rpc_tls_probe_call_done(struct rpc_task *task, void *data)
{
}
static const struct rpc_call_ops rpc_tls_probe_ops = {
.rpc_call_prepare = rpc_tls_probe_call_prepare,
.rpc_call_done = rpc_tls_probe_call_done,
};
static int tls_probe(struct rpc_clnt *clnt)
{
struct rpc_message msg = {
.rpc_proc = &rpcproc_tls_probe,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = clnt,
.rpc_message = &msg,
.rpc_op_cred = &tls_cred,
.callback_ops = &rpc_tls_probe_ops,
.flags = RPC_TASK_SOFT | RPC_TASK_SOFTCONN,
};
struct rpc_task *task;
int status;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = task->tk_status;
rpc_put_task(task);
return status;
}
static struct rpc_auth *tls_create(const struct rpc_auth_create_args *args,
struct rpc_clnt *clnt)
{
refcount_inc(&tls_auth.au_count);
return &tls_auth;
}
static void tls_destroy(struct rpc_auth *auth)
{
}
static struct rpc_cred *tls_lookup_cred(struct rpc_auth *auth,
struct auth_cred *acred, int flags)
{
return get_rpccred(&tls_cred);
}
static void tls_destroy_cred(struct rpc_cred *cred)
Annotation
- Immediate include surface: `linux/types.h`, `linux/module.h`, `linux/sunrpc/clnt.h`.
- Detected declarations: `function tls_encode_probe`, `function rpc_tls_probe_call_prepare`, `function rpc_tls_probe_call_done`, `function tls_probe`, `function tls_destroy`, `function tls_destroy_cred`, `function tls_marshal`, `function tls_refresh`, `function tls_validate`.
- Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.