mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 19:53:59 +08:00
adae0fe0ea
PipeFS superblock creation routine relays on SUNRPC pernet data presense, which is created on register_pernet_subsys() call in SUNRPC module init function. Registering of PipeFS filesystem prior to registering of per-net subsystem leads to races (mount of PipeFS can dereference uninitialized data). Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
128 lines
2.4 KiB
C
128 lines
2.4 KiB
C
/*
|
|
* 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 "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);
|