ia64/linux-2.6.18-xen.hg

view net/sunrpc/auth_null.c @ 871:9cbcc9008446

xen/x86: don't initialize cpu_data[]'s apicid field on generic code

Afaict, this is not only redundant with the intialization done in
drivers/xen/core/smpboot.c, but actually results - at least for
secondary CPUs - in the Xen-specific value written to be later
overwritten with whatever the generic code determines (with no
guarantee that the two values are identical).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu May 14 10:09:15 2009 +0100 (2009-05-14)
parents 831230e53067
children
line source
1 /*
2 * linux/net/sunrpc/auth_null.c
3 *
4 * AUTH_NULL authentication. Really :-)
5 *
6 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
7 */
9 #include <linux/types.h>
10 #include <linux/module.h>
11 #include <linux/utsname.h>
12 #include <linux/sunrpc/clnt.h>
13 #include <linux/sched.h>
15 #ifdef RPC_DEBUG
16 # define RPCDBG_FACILITY RPCDBG_AUTH
17 #endif
19 static struct rpc_auth null_auth;
20 static struct rpc_cred null_cred;
22 static struct rpc_auth *
23 nul_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
24 {
25 atomic_inc(&null_auth.au_count);
26 return &null_auth;
27 }
29 static void
30 nul_destroy(struct rpc_auth *auth)
31 {
32 }
34 /*
35 * Lookup NULL creds for current process
36 */
37 static struct rpc_cred *
38 nul_lookup_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
39 {
40 return get_rpccred(&null_cred);
41 }
43 /*
44 * Destroy cred handle.
45 */
46 static void
47 nul_destroy_cred(struct rpc_cred *cred)
48 {
49 }
51 /*
52 * Match cred handle against current process
53 */
54 static int
55 nul_match(struct auth_cred *acred, struct rpc_cred *cred, int taskflags)
56 {
57 return 1;
58 }
60 /*
61 * Marshal credential.
62 */
63 static u32 *
64 nul_marshal(struct rpc_task *task, u32 *p)
65 {
66 *p++ = htonl(RPC_AUTH_NULL);
67 *p++ = 0;
68 *p++ = htonl(RPC_AUTH_NULL);
69 *p++ = 0;
71 return p;
72 }
74 /*
75 * Refresh credential. This is a no-op for AUTH_NULL
76 */
77 static int
78 nul_refresh(struct rpc_task *task)
79 {
80 task->tk_msg.rpc_cred->cr_flags |= RPCAUTH_CRED_UPTODATE;
81 return 0;
82 }
84 static u32 *
85 nul_validate(struct rpc_task *task, u32 *p)
86 {
87 rpc_authflavor_t flavor;
88 u32 size;
90 flavor = ntohl(*p++);
91 if (flavor != RPC_AUTH_NULL) {
92 printk("RPC: bad verf flavor: %u\n", flavor);
93 return NULL;
94 }
96 size = ntohl(*p++);
97 if (size != 0) {
98 printk("RPC: bad verf size: %u\n", size);
99 return NULL;
100 }
102 return p;
103 }
105 struct rpc_authops authnull_ops = {
106 .owner = THIS_MODULE,
107 .au_flavor = RPC_AUTH_NULL,
108 #ifdef RPC_DEBUG
109 .au_name = "NULL",
110 #endif
111 .create = nul_create,
112 .destroy = nul_destroy,
113 .lookup_cred = nul_lookup_cred,
114 };
116 static
117 struct rpc_auth null_auth = {
118 .au_cslack = 4,
119 .au_rslack = 2,
120 .au_ops = &authnull_ops,
121 .au_flavor = RPC_AUTH_NULL,
122 .au_count = ATOMIC_INIT(0),
123 };
125 static
126 struct rpc_credops null_credops = {
127 .cr_name = "AUTH_NULL",
128 .crdestroy = nul_destroy_cred,
129 .crmatch = nul_match,
130 .crmarshal = nul_marshal,
131 .crrefresh = nul_refresh,
132 .crvalidate = nul_validate,
133 };
135 static
136 struct rpc_cred null_cred = {
137 .cr_ops = &null_credops,
138 .cr_count = ATOMIC_INIT(1),
139 .cr_flags = RPCAUTH_CRED_UPTODATE,
140 #ifdef RPC_DEBUG
141 .cr_magic = RPCAUTH_CRED_MAGIC,
142 #endif
143 };