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 "sunrpc.h"
  27 #include "sysfs.h"
  28 #include "netns.h"
  29
  30 unsigned int sunrpc_net_id;
  31 EXPORT_SYMBOL_GPL(sunrpc_net_id);
  32
  33 static __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
  59 err_pipefs:
  60         unix_gid_cache_destroy(net);
  61 err_unixgid:
  62         ip_map_cache_destroy(net);
  63 err_ipmap:
  64         rpc_proc_exit(net);
  65 err_proc:
  66         return err;
  67 }
  68
  69 static __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
  80 static 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
  87 static int __init
  88 init_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
 119 out5:
 120         unregister_rpc_pipefs();
 121 out4:
 122         unregister_pernet_subsys(&sunrpc_net_ops);
 123 out3:
 124         rpcauth_remove_module();
 125 out2:
 126         rpc_destroy_mempool();
 127 out:
 128         return err;
 129 }
 130
 131 static void __exit
 132 cleanup_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 }
 151 MODULE_DESCRIPTION("Sun RPC core");
 152 MODULE_LICENSE("GPL");
 153 fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
 154 module_exit(cleanup_sunrpc);