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