/*
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/*
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* linux/net/sunrpc/rpcauth_null.c
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* linux/net/sunrpc/rpcauth_null.c
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*
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*
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* AUTH_NULL authentication. Really :-)
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* AUTH_NULL authentication. Really :-)
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*
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*
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* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
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* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
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*/
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*/
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/socket.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in.h>
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#include <linux/utsname.h>
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#include <linux/utsname.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/sunrpc/clnt.h>
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#ifdef RPC_DEBUG
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#ifdef RPC_DEBUG
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# define RPCDBG_FACILITY RPCDBG_AUTH
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# define RPCDBG_FACILITY RPCDBG_AUTH
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#endif
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#endif
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static struct rpc_credops null_credops;
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static struct rpc_credops null_credops;
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static struct rpc_auth *
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static struct rpc_auth *
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nul_create(struct rpc_clnt *clnt)
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nul_create(struct rpc_clnt *clnt)
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{
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{
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struct rpc_auth *auth;
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struct rpc_auth *auth;
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dprintk("RPC: creating NULL authenticator for client %p\n", clnt);
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dprintk("RPC: creating NULL authenticator for client %p\n", clnt);
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if (!(auth = (struct rpc_auth *) rpc_allocate(0, sizeof(*auth))))
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if (!(auth = (struct rpc_auth *) rpc_allocate(0, sizeof(*auth))))
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return NULL;
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return NULL;
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auth->au_cslack = 4;
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auth->au_cslack = 4;
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auth->au_rslack = 2;
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auth->au_rslack = 2;
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auth->au_ops = &authnull_ops;
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auth->au_ops = &authnull_ops;
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auth->au_expire = 1800 * HZ;
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auth->au_expire = 1800 * HZ;
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rpcauth_init_credcache(auth);
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rpcauth_init_credcache(auth);
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return (struct rpc_auth *) auth;
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return (struct rpc_auth *) auth;
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}
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}
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static void
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static void
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nul_destroy(struct rpc_auth *auth)
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nul_destroy(struct rpc_auth *auth)
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{
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{
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dprintk("RPC: destroying NULL authenticator %p\n", auth);
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dprintk("RPC: destroying NULL authenticator %p\n", auth);
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rpcauth_free_credcache(auth);
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rpcauth_free_credcache(auth);
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rpc_free(auth);
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rpc_free(auth);
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}
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}
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/*
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/*
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* Create NULL creds for current process
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* Create NULL creds for current process
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*/
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*/
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static struct rpc_cred *
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static struct rpc_cred *
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nul_create_cred(int flags)
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nul_create_cred(int flags)
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{
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{
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struct rpc_cred *cred;
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struct rpc_cred *cred;
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if (!(cred = (struct rpc_cred *) rpc_allocate(flags, sizeof(*cred))))
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if (!(cred = (struct rpc_cred *) rpc_allocate(flags, sizeof(*cred))))
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return NULL;
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return NULL;
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atomic_set(&cred->cr_count, 0);
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atomic_set(&cred->cr_count, 0);
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cred->cr_flags = RPCAUTH_CRED_UPTODATE;
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cred->cr_flags = RPCAUTH_CRED_UPTODATE;
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cred->cr_uid = current->uid;
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cred->cr_uid = current->uid;
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cred->cr_ops = &null_credops;
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cred->cr_ops = &null_credops;
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return cred;
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return cred;
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}
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}
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/*
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/*
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* Destroy cred handle.
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* Destroy cred handle.
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*/
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*/
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static void
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static void
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nul_destroy_cred(struct rpc_cred *cred)
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nul_destroy_cred(struct rpc_cred *cred)
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{
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{
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rpc_free(cred);
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rpc_free(cred);
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}
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}
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/*
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/*
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* Match cred handle against current process
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* Match cred handle against current process
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*/
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*/
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static int
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static int
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nul_match(struct rpc_cred *cred, int taskflags)
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nul_match(struct rpc_cred *cred, int taskflags)
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{
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{
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return 1;
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return 1;
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}
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}
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/*
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/*
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* Marshal credential.
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* Marshal credential.
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*/
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*/
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static u32 *
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static u32 *
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nul_marshal(struct rpc_task *task, u32 *p, int ruid)
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nul_marshal(struct rpc_task *task, u32 *p, int ruid)
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{
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{
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*p++ = htonl(RPC_AUTH_NULL);
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*p++ = htonl(RPC_AUTH_NULL);
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*p++ = 0;
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*p++ = 0;
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*p++ = htonl(RPC_AUTH_NULL);
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*p++ = htonl(RPC_AUTH_NULL);
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*p++ = 0;
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*p++ = 0;
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return p;
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return p;
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}
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}
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/*
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/*
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* Refresh credential. This is a no-op for AUTH_NULL
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* Refresh credential. This is a no-op for AUTH_NULL
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*/
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*/
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static int
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static int
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nul_refresh(struct rpc_task *task)
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nul_refresh(struct rpc_task *task)
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{
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{
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return task->tk_status = -EACCES;
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return task->tk_status = -EACCES;
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}
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}
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static u32 *
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static u32 *
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nul_validate(struct rpc_task *task, u32 *p)
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nul_validate(struct rpc_task *task, u32 *p)
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{
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{
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u32 n = ntohl(*p++);
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u32 n = ntohl(*p++);
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if (n != RPC_AUTH_NULL) {
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if (n != RPC_AUTH_NULL) {
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printk("RPC: bad verf flavor: %ld\n", (unsigned long) n);
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printk("RPC: bad verf flavor: %ld\n", (unsigned long) n);
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return NULL;
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return NULL;
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}
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}
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if ((n = ntohl(*p++)) != 0) {
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if ((n = ntohl(*p++)) != 0) {
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printk("RPC: bad verf size: %ld\n", (unsigned long) n);
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printk("RPC: bad verf size: %ld\n", (unsigned long) n);
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return NULL;
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return NULL;
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}
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}
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return p;
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return p;
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}
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}
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struct rpc_authops authnull_ops = {
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struct rpc_authops authnull_ops = {
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RPC_AUTH_NULL,
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RPC_AUTH_NULL,
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#ifdef RPC_DEBUG
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#ifdef RPC_DEBUG
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"NULL",
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"NULL",
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#endif
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#endif
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nul_create,
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nul_create,
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nul_destroy,
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nul_destroy,
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nul_create_cred
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nul_create_cred
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};
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};
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static
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static
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struct rpc_credops null_credops = {
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struct rpc_credops null_credops = {
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nul_destroy_cred,
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nul_destroy_cred,
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nul_match,
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nul_match,
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nul_marshal,
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nul_marshal,
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nul_refresh,
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nul_refresh,
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nul_validate
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nul_validate
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};
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};
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