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Linux/net/sunrpc/sunrpc_syms.c

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  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);
141 

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