sunrpc_syms.c

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/*
 * linux/net/sunrpc/sunrpc_syms.c
 *
 * Symbols exported by the sunrpc module.
 *
 * Copyright (C) 1997 Olaf Kirch <[email protected]>
 */

#include <linux/module.h>

#include <linux/types.h>
#include <linux/uio.h>
#include <linux/unistd.h>
#include <linux/init.h>

#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/sunrpc/auth.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/sunrpc/xprtsock.h>

#include "netns.h"

int sunrpc_net_id;
EXPORT_SYMBOL_GPL(sunrpc_net_id);

static __net_init int sunrpc_init_net(struct net *net)
{
    int err;
    struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);

    err = rpc_proc_init(net);
    if (err)
        goto err_proc;

    err = ip_map_cache_create(net);
    if (err)
        goto err_ipmap;

    err = unix_gid_cache_create(net);
    if (err)
        goto err_unixgid;

    rpc_pipefs_init_net(net);
    INIT_LIST_HEAD(&sn->all_clients);
    spin_lock_init(&sn->rpc_client_lock);
    spin_lock_init(&sn->rpcb_clnt_lock);
    return 0;

err_unixgid:
    ip_map_cache_destroy(net);
err_ipmap:
    rpc_proc_exit(net);
err_proc:
    return err;
}

static __net_exit void sunrpc_exit_net(struct net *net)
{
    unix_gid_cache_destroy(net);
    ip_map_cache_destroy(net);
    rpc_proc_exit(net);
}

static struct pernet_operations sunrpc_net_ops = {
    .init = sunrpc_init_net,
    .exit = sunrpc_exit_net,
    .id = &sunrpc_net_id,
    .size = sizeof(struct sunrpc_net),
};

static int __init
init_sunrpc(void)
{
    int err = rpc_init_mempool();
    if (err)
        goto out;
    err = rpcauth_init_module();
    if (err)
        goto out2;

    cache_initialize();

    err = register_pernet_subsys(&sunrpc_net_ops);
    if (err)
        goto out3;

    err = register_rpc_pipefs();
    if (err)
        goto out4;
#ifdef RPC_DEBUG
    rpc_register_sysctl();
#endif
    svc_init_xprt_sock();   /* svc sock transport */
    init_socket_xprt(); /* clnt sock transport */
    return 0;

out4:
    unregister_pernet_subsys(&sunrpc_net_ops);
out3:
    rpcauth_remove_module();
out2:
    rpc_destroy_mempool();
out:
    return err;
}

static void __exit
cleanup_sunrpc(void)
{
    rpcauth_remove_module();
    cleanup_socket_xprt();
    svc_cleanup_xprt_sock();
    unregister_rpc_pipefs();
    rpc_destroy_mempool();
    unregister_pernet_subsys(&sunrpc_net_ops);
#ifdef RPC_DEBUG
    rpc_unregister_sysctl();
#endif
    rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
MODULE_LICENSE("GPL");
fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
module_exit(cleanup_sunrpc);