1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/net/sunrpc/sunrpc_syms.c
4 *
5 * Symbols exported by the sunrpc module.
6 *
7 * Copyright (C) 1997 Olaf Kirch <okir@monad.swb.de>
8 */
9
10#include <linux/module.h>
11
12#include <linux/types.h>
13#include <linux/uio.h>
14#include <linux/unistd.h>
15#include <linux/init.h>
16
17#include <linux/sunrpc/sched.h>
18#include <linux/sunrpc/clnt.h>
19#include <linux/sunrpc/svc.h>
20#include <linux/sunrpc/svcsock.h>
21#include <linux/sunrpc/auth.h>
22#include <linux/workqueue.h>
23#include <linux/sunrpc/rpc_pipe_fs.h>
24#include <linux/sunrpc/xprtsock.h>
25
26#include "sunrpc.h"
27#include "sysfs.h"
28#include "netns.h"
29
30unsigned int sunrpc_net_id;
31EXPORT_SYMBOL_GPL(sunrpc_net_id);
32
33static __net_init int sunrpc_init_net(struct net *net)
34{
35	int err;
36	struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
37
38	err = rpc_proc_init(net);
39	if (err)
40		goto err_proc;
41
42	err = ip_map_cache_create(net);
43	if (err)
44		goto err_ipmap;
45
46	err = unix_gid_cache_create(net);
47	if (err)
48		goto err_unixgid;
49
50	err = rpc_pipefs_init_net(net);
51	if (err)
52		goto err_pipefs;
53
54	INIT_LIST_HEAD(&sn->all_clients);
55	spin_lock_init(&sn->rpc_client_lock);
56	spin_lock_init(&sn->rpcb_clnt_lock);
57	return 0;
58
59err_pipefs:
60	unix_gid_cache_destroy(net);
61err_unixgid:
62	ip_map_cache_destroy(net);
63err_ipmap:
64	rpc_proc_exit(net);
65err_proc:
66	return err;
67}
68
69static __net_exit void sunrpc_exit_net(struct net *net)
70{
71	struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
72
73	rpc_pipefs_exit_net(net);
74	unix_gid_cache_destroy(net);
75	ip_map_cache_destroy(net);
76	rpc_proc_exit(net);
77	WARN_ON_ONCE(!list_empty(&sn->all_clients));
78}
79
80static struct pernet_operations sunrpc_net_ops = {
81	.init = sunrpc_init_net,
82	.exit = sunrpc_exit_net,
83	.id = &sunrpc_net_id,
84	.size = sizeof(struct sunrpc_net),
85};
86
87static int __init
88init_sunrpc(void)
89{
90	int err = rpc_init_mempool();
91	if (err)
92		goto out;
93	err = rpcauth_init_module();
94	if (err)
95		goto out2;
96
97	cache_initialize();
98
99	err = register_pernet_subsys(&sunrpc_net_ops);
100	if (err)
101		goto out3;
102
103	err = register_rpc_pipefs();
104	if (err)
105		goto out4;
106
107	err = rpc_sysfs_init();
108	if (err)
109		goto out5;
110
111	sunrpc_debugfs_init();
112#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
113	rpc_register_sysctl();
114#endif
115	svc_init_xprt_sock();	/* svc sock transport */
116	init_socket_xprt();	/* clnt sock transport */
117	return 0;
118
119out5:
120	unregister_rpc_pipefs();
121out4:
122	unregister_pernet_subsys(&sunrpc_net_ops);
123out3:
124	rpcauth_remove_module();
125out2:
126	rpc_destroy_mempool();
127out:
128	return err;
129}
130
131static void __exit
132cleanup_sunrpc(void)
133{
134	rpc_sysfs_exit();
135	rpc_cleanup_clids();
136	xprt_cleanup_ids();
137	xprt_multipath_cleanup_ids();
138	rpcauth_remove_module();
139	cleanup_socket_xprt();
140	svc_cleanup_xprt_sock();
141	sunrpc_debugfs_exit();
142	unregister_rpc_pipefs();
143	rpc_destroy_mempool();
144	unregister_pernet_subsys(&sunrpc_net_ops);
145	auth_domain_cleanup();
146#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
147	rpc_unregister_sysctl();
148#endif
149	rcu_barrier(); /* Wait for completion of call_rcu()'s */
150}
151MODULE_DESCRIPTION("Sun RPC core");
152MODULE_LICENSE("GPL");
153fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
154module_exit(cleanup_sunrpc);
155