net/sunrpc/sunrpc_syms.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

/*
 * linux/net/sunrpc/sunrpc_syms.c
 *
 * Symbols exported by the sunrpc module.
 *
 * Copyright (C) 1997 Olaf Kirch <okir@monad.swb.de>
 */

#include <linux/module.h>

#include <linux/types.h>
#include <linux/uio.h>
#include <linux/unistd.h>
#include <linux/init.h>

#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/sunrpc/auth.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/sunrpc/xprtsock.h>

#include "netns.h"

int sunrpc_net_id;
EXPORT_SYMBOL_GPL(sunrpc_net_id);

static __net_init int sunrpc_init_net(struct net *net)
{
	int err;
	struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);

	err = rpc_proc_init(net);
	if (err)
		goto err_proc;

	err = ip_map_cache_create(net);
	if (err)
		goto err_ipmap;

	err = unix_gid_cache_create(net);
	if (err)
		goto err_unixgid;

	err = rpc_pipefs_init_net(net);
	if (err)
		goto err_pipefs;

	INIT_LIST_HEAD(&sn->all_clients);
	spin_lock_init(&sn->rpc_client_lock);
	spin_lock_init(&sn->rpcb_clnt_lock);
	return 0;

err_pipefs:
	unix_gid_cache_destroy(net);
err_unixgid:
	ip_map_cache_destroy(net);
err_ipmap:
	rpc_proc_exit(net);
err_proc:
	return err;
}

static __net_exit void sunrpc_exit_net(struct net *net)
{
	rpc_pipefs_exit_net(net);
	unix_gid_cache_destroy(net);
	ip_map_cache_destroy(net);
	rpc_proc_exit(net);
}

static struct pernet_operations sunrpc_net_ops = {
	.init = sunrpc_init_net,
	.exit = sunrpc_exit_net,
	.id = &sunrpc_net_id,
	.size = sizeof(struct sunrpc_net),
};

static int __init
init_sunrpc(void)
{
	int err = rpc_init_mempool();
	if (err)
		goto out;
	err = rpcauth_init_module();
	if (err)
		goto out2;

	cache_initialize();

	err = register_pernet_subsys(&sunrpc_net_ops);
	if (err)
		goto out3;

	err = register_rpc_pipefs();
	if (err)
		goto out4;

	err = sunrpc_debugfs_init();
	if (err)
		goto out5;

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
	rpc_register_sysctl();
#endif
	svc_init_xprt_sock();	/* svc sock transport */
	init_socket_xprt();	/* clnt sock transport */
	return 0;

out5:
	unregister_rpc_pipefs();
out4:
	unregister_pernet_subsys(&sunrpc_net_ops);
out3:
	rpcauth_remove_module();
out2:
	rpc_destroy_mempool();
out:
	return err;
}

static void __exit
cleanup_sunrpc(void)
{
	rpcauth_remove_module();
	cleanup_socket_xprt();
	svc_cleanup_xprt_sock();
	sunrpc_debugfs_exit();
	unregister_rpc_pipefs();
	rpc_destroy_mempool();
	unregister_pernet_subsys(&sunrpc_net_ops);
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
	rpc_unregister_sysctl();
#endif
	rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
MODULE_LICENSE("GPL");
fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
module_exit(cleanup_sunrpc);