142 lines
2.4 KiB
C
142 lines
2.4 KiB
C
/*
|
|
* linux/net/sunrpc/auth_null.c
|
|
*
|
|
* AUTH_NULL authentication. Really :-)
|
|
*
|
|
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/utsname.h>
|
|
#include <linux/sunrpc/clnt.h>
|
|
#include <linux/sched.h>
|
|
|
|
#ifdef RPC_DEBUG
|
|
# define RPCDBG_FACILITY RPCDBG_AUTH
|
|
#endif
|
|
|
|
static struct rpc_auth null_auth;
|
|
static struct rpc_cred null_cred;
|
|
|
|
static struct rpc_auth *
|
|
nul_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
|
|
{
|
|
atomic_inc(&null_auth.au_count);
|
|
return &null_auth;
|
|
}
|
|
|
|
static void
|
|
nul_destroy(struct rpc_auth *auth)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Lookup NULL creds for current process
|
|
*/
|
|
static struct rpc_cred *
|
|
nul_lookup_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
|
|
{
|
|
return get_rpccred(&null_cred);
|
|
}
|
|
|
|
/*
|
|
* Destroy cred handle.
|
|
*/
|
|
static void
|
|
nul_destroy_cred(struct rpc_cred *cred)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Match cred handle against current process
|
|
*/
|
|
static int
|
|
nul_match(struct auth_cred *acred, struct rpc_cred *cred, int taskflags)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Marshal credential.
|
|
*/
|
|
static u32 *
|
|
nul_marshal(struct rpc_task *task, u32 *p)
|
|
{
|
|
*p++ = htonl(RPC_AUTH_NULL);
|
|
*p++ = 0;
|
|
*p++ = htonl(RPC_AUTH_NULL);
|
|
*p++ = 0;
|
|
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* Refresh credential. This is a no-op for AUTH_NULL
|
|
*/
|
|
static int
|
|
nul_refresh(struct rpc_task *task)
|
|
{
|
|
task->tk_msg.rpc_cred->cr_flags |= RPCAUTH_CRED_UPTODATE;
|
|
return 0;
|
|
}
|
|
|
|
static u32 *
|
|
nul_validate(struct rpc_task *task, u32 *p)
|
|
{
|
|
rpc_authflavor_t flavor;
|
|
u32 size;
|
|
|
|
flavor = ntohl(*p++);
|
|
if (flavor != RPC_AUTH_NULL) {
|
|
printk("RPC: bad verf flavor: %u\n", flavor);
|
|
return NULL;
|
|
}
|
|
|
|
size = ntohl(*p++);
|
|
if (size != 0) {
|
|
printk("RPC: bad verf size: %u\n", size);
|
|
return NULL;
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
struct rpc_authops authnull_ops = {
|
|
.owner = THIS_MODULE,
|
|
.au_flavor = RPC_AUTH_NULL,
|
|
#ifdef RPC_DEBUG
|
|
.au_name = "NULL",
|
|
#endif
|
|
.create = nul_create,
|
|
.destroy = nul_destroy,
|
|
.lookup_cred = nul_lookup_cred,
|
|
};
|
|
|
|
static
|
|
struct rpc_auth null_auth = {
|
|
.au_cslack = 4,
|
|
.au_rslack = 2,
|
|
.au_ops = &authnull_ops,
|
|
};
|
|
|
|
static
|
|
struct rpc_credops null_credops = {
|
|
.cr_name = "AUTH_NULL",
|
|
.crdestroy = nul_destroy_cred,
|
|
.crmatch = nul_match,
|
|
.crmarshal = nul_marshal,
|
|
.crrefresh = nul_refresh,
|
|
.crvalidate = nul_validate,
|
|
};
|
|
|
|
static
|
|
struct rpc_cred null_cred = {
|
|
.cr_ops = &null_credops,
|
|
.cr_count = ATOMIC_INIT(1),
|
|
.cr_flags = RPCAUTH_CRED_UPTODATE,
|
|
#ifdef RPC_DEBUG
|
|
.cr_magic = RPCAUTH_CRED_MAGIC,
|
|
#endif
|
|
};
|