net/sunrpc/sunrpc_syms.c

   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 "netns.h"
  27
  28 unsigned int sunrpc_net_id;
  29 EXPORT_SYMBOL_GPL(sunrpc_net_id);
  30
  31 static __net_init int sunrpc_init_net(struct net *net)
  32 {
  33         int err;
  34         struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
  35
  36         err = rpc_proc_init(net);
  37         if (err)
  38                 goto err_proc;
  39
  40         err = ip_map_cache_create(net);
  41         if (err)
  42                 goto err_ipmap;
  43
  44         err = unix_gid_cache_create(net);
  45         if (err)
  46                 goto err_unixgid;
  47
  48         err = rpc_pipefs_init_net(net);
  49         if (err)
  50                 goto err_pipefs;
  51
  52         INIT_LIST_HEAD(&sn->all_clients);
  53         spin_lock_init(&sn->rpc_client_lock);
  54         spin_lock_init(&sn->rpcb_clnt_lock);
  55         return 0;
  56
  57 err_pipefs:
  58         unix_gid_cache_destroy(net);
  59 err_unixgid:
  60         ip_map_cache_destroy(net);
  61 err_ipmap:
  62         rpc_proc_exit(net);
  63 err_proc:
  64         return err;
  65 }
  66
  67 static __net_exit void sunrpc_exit_net(struct net *net)
  68 {
  69         struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
  70
  71         rpc_pipefs_exit_net(net);
  72         unix_gid_cache_destroy(net);
  73         ip_map_cache_destroy(net);
  74         rpc_proc_exit(net);
  75         WARN_ON_ONCE(!list_empty(&sn->all_clients));
  76 }
  77
  78 static struct pernet_operations sunrpc_net_ops = {
  79         .init = sunrpc_init_net,
  80         .exit = sunrpc_exit_net,
  81         .id = &sunrpc_net_id,
  82         .size = sizeof(struct sunrpc_net),
  83 };
  84
  85 static int __init
  86 init_sunrpc(void)
  87 {
  88         int err = rpc_init_mempool();
  89         if (err)
  90                 goto out;
  91         err = rpcauth_init_module();
  92         if (err)
  93                 goto out2;
  94
  95         cache_initialize();
  96
  97         err = register_pernet_subsys(&sunrpc_net_ops);
  98         if (err)
  99                 goto out3;
 100
 101         err = register_rpc_pipefs();
 102         if (err)
 103                 goto out4;
 104
 105         sunrpc_debugfs_init();
 106 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
 107         rpc_register_sysctl();
 108 #endif
 109         svc_init_xprt_sock();   /* svc sock transport */
 110         init_socket_xprt();     /* clnt sock transport */
 111         return 0;
 112
 113 out4:
 114         unregister_pernet_subsys(&sunrpc_net_ops);
 115 out3:
 116         rpcauth_remove_module();
 117 out2:
 118         rpc_destroy_mempool();
 119 out:
 120         return err;
 121 }
 122
 123 static void __exit
 124 cleanup_sunrpc(void)
 125 {
 126         rpc_cleanup_clids();
 127         rpcauth_remove_module();
 128         cleanup_socket_xprt();
 129         svc_cleanup_xprt_sock();
 130         sunrpc_debugfs_exit();
 131         unregister_rpc_pipefs();
 132         rpc_destroy_mempool();
 133         unregister_pernet_subsys(&sunrpc_net_ops);
 134 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
 135         rpc_unregister_sysctl();
 136 #endif
 137         rcu_barrier(); /* Wait for completion of call_rcu()'s */
 138 }
 139 MODULE_LICENSE("GPL");
 140 fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
 141 module_exit(cleanup_sunrpc);