linux/net/sunrpc/sunrpc_syms.c
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   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_LICENSE("GPL");
 152fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
 153module_exit(cleanup_sunrpc);
 154