// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/net/sunrpc/sunrpc_syms.c
 *
 * Symbols exported by the sunrpc module.
 *
 * Copyright (C) 1997 Olaf Kirch <okir@monad.swb.de>
 */

#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 <net/genetlink.h>

#include "sunrpc.h"
#include "sysfs.h"
#include "netns.h"
#include "netlink.h"

unsigned 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;

        err = rpc_pipefs_init_net(net);
        if (err)
                goto err_pipefs;

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

err_pipefs:
        unix_gid_cache_destroy(net);
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)
{
        struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);

        rpc_pipefs_exit_net(net);
        unix_gid_cache_destroy(net);
        ip_map_cache_destroy(net);
        rpc_proc_exit(net);
        WARN_ON_ONCE(!list_empty(&sn->all_clients));
}

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;

        err = rpc_sysfs_init();
        if (err)
                goto out5;

        err = genl_register_family(&sunrpc_nl_family);
        if (err)
                goto out6;

        sunrpc_debugfs_init();
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
        rpc_register_sysctl();
#endif
        svc_init_xprt_sock();   /* svc sock transport */
        init_socket_xprt();     /* clnt sock transport */
        return 0;

out6:
        rpc_sysfs_exit();
out5:
        unregister_rpc_pipefs();
out4:
        unregister_pernet_subsys(&sunrpc_net_ops);
out3:
        rpcauth_remove_module();
out2:
        rpc_destroy_mempool();
out:
        return err;
}

static void __exit
cleanup_sunrpc(void)
{
        genl_unregister_family(&sunrpc_nl_family);
        rpc_sysfs_exit();
        rpc_cleanup_clids();
        xprt_cleanup_ids();
        xprt_multipath_cleanup_ids();
        rpcauth_remove_module();
        cleanup_socket_xprt();
        svc_cleanup_xprt_sock();
        sunrpc_debugfs_exit();
        unregister_rpc_pipefs();
        rpc_destroy_mempool();
        unregister_pernet_subsys(&sunrpc_net_ops);
        auth_domain_cleanup();
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
        rpc_unregister_sysctl();
#endif
        rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
MODULE_DESCRIPTION("Sun RPC core");
MODULE_LICENSE("GPL");
fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
module_exit(cleanup_sunrpc);