net/sunrpc/sunrpc_syms.c

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