2019-05-19 15:08:20 +03:00
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// SPDX-License-Identifier: GPL-2.0-only
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2005-04-17 02:20:36 +04:00
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/*
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* linux/fs/lockd/svc.c
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*
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* This is the central lockd service.
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*
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* FIXME: Separate the lockd NFS server functionality from the lockd NFS
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* client functionality. Oh why didn't Sun create two separate
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* services in the first place?
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*
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* Authors: Olaf Kirch (okir@monad.swb.de)
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sysctl.h>
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#include <linux/moduleparam.h>
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2017-02-08 20:51:30 +03:00
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#include <linux/sched/signal.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/errno.h>
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#include <linux/in.h>
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#include <linux/uio.h>
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#include <linux/smp.h>
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2006-03-26 13:37:12 +04:00
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#include <linux/mutex.h>
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2008-02-08 00:34:55 +03:00
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#include <linux/kthread.h>
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2007-07-17 15:03:35 +04:00
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#include <linux/freezer.h>
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2015-12-12 00:46:00 +03:00
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#include <linux/inetdevice.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/sunrpc/types.h>
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#include <linux/sunrpc/stats.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/svcsock.h>
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2015-12-12 00:46:00 +03:00
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#include <linux/sunrpc/svc_xprt.h>
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2006-10-02 13:17:45 +04:00
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#include <net/ip.h>
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2015-12-12 00:46:00 +03:00
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#include <net/addrconf.h>
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#include <net/ipv6.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/lockd/lockd.h>
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#include <linux/nfs.h>
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2012-01-31 15:07:57 +04:00
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#include "netns.h"
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2014-09-13 00:40:20 +04:00
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#include "procfs.h"
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2012-01-31 15:07:57 +04:00
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2005-04-17 02:20:36 +04:00
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#define NLMDBG_FACILITY NLMDBG_SVC
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#define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE)
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#define ALLOWED_SIGS (sigmask(SIGKILL))
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static struct svc_program nlmsvc_program;
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2015-12-24 00:25:13 +03:00
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const struct nlmsvc_binding *nlmsvc_ops;
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2008-12-23 23:21:33 +03:00
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EXPORT_SYMBOL_GPL(nlmsvc_ops);
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2005-04-17 02:20:36 +04:00
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2006-03-26 13:37:12 +04:00
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static DEFINE_MUTEX(nlmsvc_mutex);
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2005-04-17 02:20:36 +04:00
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static unsigned int nlmsvc_users;
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2008-02-08 00:34:55 +03:00
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static struct task_struct *nlmsvc_task;
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2008-06-11 18:03:12 +04:00
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static struct svc_rqst *nlmsvc_rqst;
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2005-04-17 02:20:36 +04:00
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unsigned long nlmsvc_timeout;
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2018-02-07 13:29:47 +03:00
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static atomic_t nlm_ntf_refcnt = ATOMIC_INIT(0);
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static DECLARE_WAIT_QUEUE_HEAD(nlm_ntf_wq);
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2017-11-10 10:19:26 +03:00
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netns: make struct pernet_operations::id unsigned int
Make struct pernet_operations::id unsigned.
There are 2 reasons to do so:
1)
This field is really an index into an zero based array and
thus is unsigned entity. Using negative value is out-of-bound
access by definition.
2)
On x86_64 unsigned 32-bit data which are mixed with pointers
via array indexing or offsets added or subtracted to pointers
are preffered to signed 32-bit data.
"int" being used as an array index needs to be sign-extended
to 64-bit before being used.
void f(long *p, int i)
{
g(p[i]);
}
roughly translates to
movsx rsi, esi
mov rdi, [rsi+...]
call g
MOVSX is 3 byte instruction which isn't necessary if the variable is
unsigned because x86_64 is zero extending by default.
Now, there is net_generic() function which, you guessed it right, uses
"int" as an array index:
static inline void *net_generic(const struct net *net, int id)
{
...
ptr = ng->ptr[id - 1];
...
}
And this function is used a lot, so those sign extensions add up.
Patch snipes ~1730 bytes on allyesconfig kernel (without all junk
messing with code generation):
add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730)
Unfortunately some functions actually grow bigger.
This is a semmingly random artefact of code generation with register
allocator being used differently. gcc decides that some variable
needs to live in new r8+ registers and every access now requires REX
prefix. Or it is shifted into r12, so [r12+0] addressing mode has to be
used which is longer than [r8]
However, overall balance is in negative direction:
add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730)
function old new delta
nfsd4_lock 3886 3959 +73
tipc_link_build_proto_msg 1096 1140 +44
mac80211_hwsim_new_radio 2776 2808 +32
tipc_mon_rcv 1032 1058 +26
svcauth_gss_legacy_init 1413 1429 +16
tipc_bcbase_select_primary 379 392 +13
nfsd4_exchange_id 1247 1260 +13
nfsd4_setclientid_confirm 782 793 +11
...
put_client_renew_locked 494 480 -14
ip_set_sockfn_get 730 716 -14
geneve_sock_add 829 813 -16
nfsd4_sequence_done 721 703 -18
nlmclnt_lookup_host 708 686 -22
nfsd4_lockt 1085 1063 -22
nfs_get_client 1077 1050 -27
tcf_bpf_init 1106 1076 -30
nfsd4_encode_fattr 5997 5930 -67
Total: Before=154856051, After=154854321, chg -0.00%
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-17 04:58:21 +03:00
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unsigned int lockd_net_id;
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2012-01-31 15:07:57 +04:00
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2005-04-17 02:20:36 +04:00
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/*
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* These can be set at insmod time (useful for NFS as root filesystem),
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* and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003
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*/
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static unsigned long nlm_grace_period;
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static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO;
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static int nlm_udpport, nlm_tcpport;
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2008-10-20 19:51:58 +04:00
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/* RLIM_NOFILE defaults to 1024. That seems like a reasonable default here. */
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static unsigned int nlm_max_connections = 1024;
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2005-04-17 02:20:36 +04:00
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/*
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* Constants needed for the sysctl interface.
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*/
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static const unsigned long nlm_grace_period_min = 0;
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static const unsigned long nlm_grace_period_max = 240;
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static const unsigned long nlm_timeout_min = 3;
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static const unsigned long nlm_timeout_max = 20;
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static const int nlm_port_min = 0, nlm_port_max = 65535;
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2008-03-14 21:18:30 +03:00
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#ifdef CONFIG_SYSCTL
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2005-04-17 02:20:36 +04:00
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static struct ctl_table_header * nlm_sysctl_table;
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2008-03-14 21:18:30 +03:00
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#endif
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2005-04-17 02:20:36 +04:00
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2007-07-17 15:04:35 +04:00
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static unsigned long get_lockd_grace_period(void)
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2005-04-17 02:20:36 +04:00
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{
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/* Note: nlm_timeout should always be nonzero */
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if (nlm_grace_period)
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2007-07-17 15:04:35 +04:00
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return roundup(nlm_grace_period, nlm_timeout) * HZ;
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2005-04-17 02:20:36 +04:00
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else
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2007-07-17 15:04:35 +04:00
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return nlm_timeout * 5 * HZ;
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}
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2012-07-25 16:56:50 +04:00
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static void grace_ender(struct work_struct *grace)
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2007-07-17 15:04:35 +04:00
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{
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2016-01-01 17:06:29 +03:00
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struct delayed_work *dwork = to_delayed_work(grace);
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2012-07-25 16:56:50 +04:00
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struct lockd_net *ln = container_of(dwork, struct lockd_net,
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grace_period_end);
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locks_end_grace(&ln->lockd_manager);
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2005-04-17 02:20:36 +04:00
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}
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2012-07-25 16:57:22 +04:00
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static void set_grace_period(struct net *net)
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2005-04-17 02:20:36 +04:00
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{
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2007-09-06 20:34:25 +04:00
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unsigned long grace_period = get_lockd_grace_period();
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2012-07-25 16:57:22 +04:00
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struct lockd_net *ln = net_generic(net, lockd_net_id);
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2008-03-19 02:00:19 +03:00
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2012-07-25 16:57:22 +04:00
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locks_start_grace(net, &ln->lockd_manager);
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2012-07-25 16:56:43 +04:00
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cancel_delayed_work_sync(&ln->grace_period_end);
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schedule_delayed_work(&ln->grace_period_end, grace_period);
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2005-04-17 02:20:36 +04:00
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}
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2009-05-07 00:32:54 +04:00
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static void restart_grace(void)
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{
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if (nlmsvc_ops) {
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2012-07-25 16:57:22 +04:00
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struct net *net = &init_net;
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struct lockd_net *ln = net_generic(net, lockd_net_id);
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2012-07-25 16:56:43 +04:00
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cancel_delayed_work_sync(&ln->grace_period_end);
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2012-07-25 16:56:50 +04:00
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locks_end_grace(&ln->lockd_manager);
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2009-05-07 00:32:54 +04:00
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nlmsvc_invalidate_all();
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2012-07-25 16:57:22 +04:00
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set_grace_period(net);
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2009-05-07 00:32:54 +04:00
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}
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}
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2005-04-17 02:20:36 +04:00
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/*
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* This is the lockd kernel thread
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*/
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2008-02-08 00:34:55 +03:00
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static int
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lockd(void *vrqstp)
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2005-04-17 02:20:36 +04:00
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{
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2012-08-18 05:47:53 +04:00
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int err = 0;
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2008-02-08 00:34:55 +03:00
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struct svc_rqst *rqstp = vrqstp;
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2017-03-29 04:25:08 +03:00
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struct net *net = &init_net;
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struct lockd_net *ln = net_generic(net, lockd_net_id);
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2005-04-17 02:20:36 +04:00
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2008-02-08 00:34:55 +03:00
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/* try_to_freeze() is called from svc_recv() */
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2007-07-17 15:03:35 +04:00
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set_freezable();
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2005-04-17 02:20:36 +04:00
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2008-02-08 00:34:55 +03:00
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/* Allow SIGKILL to tell lockd to drop all of its locks */
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2005-04-17 02:20:36 +04:00
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allow_signal(SIGKILL);
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dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n");
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/*
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* The main request loop. We don't terminate until the last
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2008-02-08 00:34:55 +03:00
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* NFS mount or NFS daemon has gone away.
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2005-04-17 02:20:36 +04:00
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*/
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2008-02-08 00:34:55 +03:00
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while (!kthread_should_stop()) {
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2005-04-17 02:20:36 +04:00
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long timeout = MAX_SCHEDULE_TIMEOUT;
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2008-02-21 10:57:45 +03:00
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RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
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2005-04-17 02:20:36 +04:00
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2008-10-20 19:51:58 +04:00
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/* update sv_maxconn if it has changed */
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rqstp->rq_server->sv_maxconn = nlm_max_connections;
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2005-04-17 02:20:36 +04:00
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if (signalled()) {
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flush_signals(current);
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2009-05-07 00:32:54 +04:00
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restart_grace();
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2008-02-08 00:34:55 +03:00
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continue;
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2005-04-17 02:20:36 +04:00
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}
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2008-01-24 19:11:34 +03:00
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timeout = nlmsvc_retry_blocked();
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2005-04-17 02:20:36 +04:00
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/*
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* Find a socket with data available and call its
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* recvfrom routine.
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*/
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2006-10-02 13:17:50 +04:00
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err = svc_recv(rqstp, timeout);
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2012-08-18 05:47:53 +04:00
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if (err == -EAGAIN || err == -EINTR)
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2005-04-17 02:20:36 +04:00
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continue;
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2007-02-12 11:53:32 +03:00
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dprintk("lockd: request from %s\n",
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svc_print_addr(rqstp, buf, sizeof(buf)));
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2005-04-17 02:20:36 +04:00
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2006-10-02 13:17:50 +04:00
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svc_process(rqstp);
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2005-04-17 02:20:36 +04:00
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}
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2006-01-03 11:55:19 +03:00
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flush_signals(current);
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2008-02-08 00:34:55 +03:00
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if (nlmsvc_ops)
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nlmsvc_invalidate_all();
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nlm_shutdown_hosts();
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2017-03-29 04:25:08 +03:00
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cancel_delayed_work_sync(&ln->grace_period_end);
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locks_end_grace(&ln->lockd_manager);
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2008-02-08 00:34:55 +03:00
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return 0;
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2005-04-17 02:20:36 +04:00
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}
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2009-03-19 03:47:59 +03:00
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static int create_lockd_listener(struct svc_serv *serv, const char *name,
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2012-01-31 15:07:48 +04:00
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struct net *net, const int family,
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2019-04-09 19:13:39 +03:00
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const unsigned short port,
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const struct cred *cred)
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2009-01-01 00:06:04 +03:00
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{
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struct svc_xprt *xprt;
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2012-01-31 15:07:48 +04:00
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xprt = svc_find_xprt(serv, name, net, family, 0);
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2009-01-01 00:06:04 +03:00
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if (xprt == NULL)
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2012-01-31 15:07:48 +04:00
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return svc_create_xprt(serv, name, net, family, port,
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2019-04-09 19:13:37 +03:00
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SVC_SOCK_DEFAULTS, cred);
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2009-01-01 00:06:04 +03:00
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svc_xprt_put(xprt);
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return 0;
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}
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2012-01-31 15:07:48 +04:00
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static int create_lockd_family(struct svc_serv *serv, struct net *net,
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2019-04-09 19:13:39 +03:00
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const int family, const struct cred *cred)
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2009-03-19 03:47:59 +03:00
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{
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int err;
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2019-04-09 19:13:39 +03:00
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err = create_lockd_listener(serv, "udp", net, family, nlm_udpport,
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cred);
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2009-03-19 03:47:59 +03:00
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if (err < 0)
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return err;
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2019-04-09 19:13:39 +03:00
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return create_lockd_listener(serv, "tcp", net, family, nlm_tcpport,
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cred);
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2009-03-19 03:47:59 +03:00
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}
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2007-02-12 11:53:29 +03:00
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/*
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2008-10-04 01:15:23 +04:00
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* Ensure there are active UDP and TCP listeners for lockd.
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*
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* Even if we have only TCP NFS mounts and/or TCP NFSDs, some
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* local services (such as rpc.statd) still require UDP, and
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* some NFS servers do not yet support NLM over TCP.
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*
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* Returns zero if all listeners are available; otherwise a
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* negative errno value is returned.
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2007-02-12 11:53:29 +03:00
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*/
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2019-04-09 19:13:39 +03:00
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static int make_socks(struct svc_serv *serv, struct net *net,
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const struct cred *cred)
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2006-10-02 13:17:45 +04:00
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{
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2007-02-12 11:53:29 +03:00
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static int warned;
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2009-01-01 00:06:11 +03:00
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int err;
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2007-02-12 11:53:29 +03:00
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2019-04-09 19:13:39 +03:00
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err = create_lockd_family(serv, net, PF_INET, cred);
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2009-01-01 00:06:11 +03:00
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if (err < 0)
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goto out_err;
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2019-04-09 19:13:39 +03:00
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err = create_lockd_family(serv, net, PF_INET6, cred);
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2009-03-19 03:47:59 +03:00
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|
|
if (err < 0 && err != -EAFNOSUPPORT)
|
2009-01-01 00:06:11 +03:00
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
warned = 0;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_err:
|
|
|
|
if (warned++ == 0)
|
2006-10-02 13:17:52 +04:00
|
|
|
printk(KERN_WARNING
|
2009-01-01 00:06:11 +03:00
|
|
|
"lockd_up: makesock failed, error=%d\n", err);
|
2014-03-25 22:55:26 +04:00
|
|
|
svc_shutdown_net(serv, net);
|
2006-10-02 13:17:45 +04:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2019-04-09 19:13:39 +03:00
|
|
|
static int lockd_up_net(struct svc_serv *serv, struct net *net,
|
|
|
|
const struct cred *cred)
|
2012-01-31 15:08:05 +04:00
|
|
|
{
|
|
|
|
struct lockd_net *ln = net_generic(net, lockd_net_id);
|
|
|
|
int error;
|
|
|
|
|
2012-05-04 12:49:41 +04:00
|
|
|
if (ln->nlmsvc_users++)
|
2012-01-31 15:08:05 +04:00
|
|
|
return 0;
|
|
|
|
|
2012-04-25 18:22:47 +04:00
|
|
|
error = svc_bind(serv, net);
|
2012-01-31 15:08:05 +04:00
|
|
|
if (error)
|
2012-04-25 18:22:47 +04:00
|
|
|
goto err_bind;
|
2012-01-31 15:08:05 +04:00
|
|
|
|
2019-04-09 19:13:39 +03:00
|
|
|
error = make_socks(serv, net, cred);
|
2012-01-31 15:08:05 +04:00
|
|
|
if (error < 0)
|
2014-08-30 00:25:50 +04:00
|
|
|
goto err_bind;
|
2012-07-25 16:57:29 +04:00
|
|
|
set_grace_period(net);
|
2017-11-08 08:55:55 +03:00
|
|
|
dprintk("%s: per-net data created; net=%x\n", __func__, net->ns.inum);
|
2012-01-31 15:08:05 +04:00
|
|
|
return 0;
|
|
|
|
|
2012-04-25 18:22:47 +04:00
|
|
|
err_bind:
|
2012-05-04 12:49:41 +04:00
|
|
|
ln->nlmsvc_users--;
|
2012-01-31 15:08:05 +04:00
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2012-04-25 18:22:40 +04:00
|
|
|
static void lockd_down_net(struct svc_serv *serv, struct net *net)
|
2012-01-31 15:08:05 +04:00
|
|
|
{
|
|
|
|
struct lockd_net *ln = net_generic(net, lockd_net_id);
|
|
|
|
|
|
|
|
if (ln->nlmsvc_users) {
|
2012-01-31 15:08:29 +04:00
|
|
|
if (--ln->nlmsvc_users == 0) {
|
|
|
|
nlm_shutdown_hosts_net(net);
|
2017-11-02 13:03:42 +03:00
|
|
|
cancel_delayed_work_sync(&ln->grace_period_end);
|
|
|
|
locks_end_grace(&ln->lockd_manager);
|
2012-01-31 15:08:05 +04:00
|
|
|
svc_shutdown_net(serv, net);
|
2017-11-08 08:55:55 +03:00
|
|
|
dprintk("%s: per-net data destroyed; net=%x\n",
|
|
|
|
__func__, net->ns.inum);
|
2012-01-31 15:08:29 +04:00
|
|
|
}
|
2012-01-31 15:08:05 +04:00
|
|
|
} else {
|
2017-11-08 08:55:55 +03:00
|
|
|
pr_err("%s: no users! task=%p, net=%x\n",
|
|
|
|
__func__, nlmsvc_task, net->ns.inum);
|
2012-01-31 15:08:05 +04:00
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-12-12 00:46:00 +03:00
|
|
|
static int lockd_inetaddr_event(struct notifier_block *this,
|
|
|
|
unsigned long event, void *ptr)
|
|
|
|
{
|
|
|
|
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
|
|
|
|
struct sockaddr_in sin;
|
|
|
|
|
2017-11-10 10:19:26 +03:00
|
|
|
if ((event != NETDEV_DOWN) ||
|
|
|
|
!atomic_inc_not_zero(&nlm_ntf_refcnt))
|
2015-12-12 00:46:00 +03:00
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (nlmsvc_rqst) {
|
|
|
|
dprintk("lockd_inetaddr_event: removed %pI4\n",
|
|
|
|
&ifa->ifa_local);
|
|
|
|
sin.sin_family = AF_INET;
|
|
|
|
sin.sin_addr.s_addr = ifa->ifa_local;
|
|
|
|
svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,
|
|
|
|
(struct sockaddr *)&sin);
|
|
|
|
}
|
2017-11-10 10:19:26 +03:00
|
|
|
atomic_dec(&nlm_ntf_refcnt);
|
|
|
|
wake_up(&nlm_ntf_wq);
|
2015-12-12 00:46:00 +03:00
|
|
|
|
|
|
|
out:
|
|
|
|
return NOTIFY_DONE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block lockd_inetaddr_notifier = {
|
|
|
|
.notifier_call = lockd_inetaddr_event,
|
|
|
|
};
|
|
|
|
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
static int lockd_inet6addr_event(struct notifier_block *this,
|
|
|
|
unsigned long event, void *ptr)
|
|
|
|
{
|
|
|
|
struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
|
|
|
|
struct sockaddr_in6 sin6;
|
|
|
|
|
2017-11-10 10:19:26 +03:00
|
|
|
if ((event != NETDEV_DOWN) ||
|
|
|
|
!atomic_inc_not_zero(&nlm_ntf_refcnt))
|
2015-12-12 00:46:00 +03:00
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (nlmsvc_rqst) {
|
|
|
|
dprintk("lockd_inet6addr_event: removed %pI6\n", &ifa->addr);
|
|
|
|
sin6.sin6_family = AF_INET6;
|
|
|
|
sin6.sin6_addr = ifa->addr;
|
2017-01-06 00:34:50 +03:00
|
|
|
if (ipv6_addr_type(&sin6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
|
|
|
|
sin6.sin6_scope_id = ifa->idev->dev->ifindex;
|
2015-12-12 00:46:00 +03:00
|
|
|
svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,
|
|
|
|
(struct sockaddr *)&sin6);
|
|
|
|
}
|
2017-11-10 10:19:26 +03:00
|
|
|
atomic_dec(&nlm_ntf_refcnt);
|
|
|
|
wake_up(&nlm_ntf_wq);
|
2015-12-12 00:46:00 +03:00
|
|
|
|
|
|
|
out:
|
|
|
|
return NOTIFY_DONE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block lockd_inet6addr_notifier = {
|
|
|
|
.notifier_call = lockd_inet6addr_event,
|
|
|
|
};
|
|
|
|
#endif
|
|
|
|
|
2016-06-30 17:39:32 +03:00
|
|
|
static void lockd_unregister_notifiers(void)
|
2015-12-12 00:46:00 +03:00
|
|
|
{
|
|
|
|
unregister_inetaddr_notifier(&lockd_inetaddr_notifier);
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
unregister_inet6addr_notifier(&lockd_inet6addr_notifier);
|
|
|
|
#endif
|
2017-11-10 10:19:26 +03:00
|
|
|
wait_event(nlm_ntf_wq, atomic_read(&nlm_ntf_refcnt) == 0);
|
2016-06-30 17:39:32 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static void lockd_svc_exit_thread(void)
|
|
|
|
{
|
2017-11-10 10:19:26 +03:00
|
|
|
atomic_dec(&nlm_ntf_refcnt);
|
2016-06-30 17:39:32 +03:00
|
|
|
lockd_unregister_notifiers();
|
2015-12-12 00:46:00 +03:00
|
|
|
svc_exit_thread(nlmsvc_rqst);
|
|
|
|
}
|
|
|
|
|
2012-04-25 18:23:09 +04:00
|
|
|
static int lockd_start_svc(struct svc_serv *serv)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (nlmsvc_rqst)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the kernel thread and wait for it to start.
|
|
|
|
*/
|
|
|
|
nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
|
|
|
|
if (IS_ERR(nlmsvc_rqst)) {
|
|
|
|
error = PTR_ERR(nlmsvc_rqst);
|
|
|
|
printk(KERN_WARNING
|
|
|
|
"lockd_up: svc_rqst allocation failed, error=%d\n",
|
|
|
|
error);
|
2017-10-20 17:33:18 +03:00
|
|
|
lockd_unregister_notifiers();
|
2012-04-25 18:23:09 +04:00
|
|
|
goto out_rqst;
|
|
|
|
}
|
|
|
|
|
2017-11-10 10:19:26 +03:00
|
|
|
atomic_inc(&nlm_ntf_refcnt);
|
2012-04-25 18:23:09 +04:00
|
|
|
svc_sock_update_bufs(serv);
|
|
|
|
serv->sv_maxconn = nlm_max_connections;
|
|
|
|
|
2014-09-02 21:58:57 +04:00
|
|
|
nlmsvc_task = kthread_create(lockd, nlmsvc_rqst, "%s", serv->sv_name);
|
2012-04-25 18:23:09 +04:00
|
|
|
if (IS_ERR(nlmsvc_task)) {
|
|
|
|
error = PTR_ERR(nlmsvc_task);
|
|
|
|
printk(KERN_WARNING
|
|
|
|
"lockd_up: kthread_run failed, error=%d\n", error);
|
|
|
|
goto out_task;
|
|
|
|
}
|
2014-08-03 21:03:07 +04:00
|
|
|
nlmsvc_rqst->rq_task = nlmsvc_task;
|
2014-09-02 21:58:57 +04:00
|
|
|
wake_up_process(nlmsvc_task);
|
2014-08-03 21:03:07 +04:00
|
|
|
|
2012-04-25 18:23:09 +04:00
|
|
|
dprintk("lockd_up: service started\n");
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_task:
|
2015-12-12 00:46:00 +03:00
|
|
|
lockd_svc_exit_thread();
|
2012-04-25 18:23:09 +04:00
|
|
|
nlmsvc_task = NULL;
|
|
|
|
out_rqst:
|
|
|
|
nlmsvc_rqst = NULL;
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2017-08-01 19:00:06 +03:00
|
|
|
static const struct svc_serv_ops lockd_sv_ops = {
|
2015-06-08 22:06:51 +03:00
|
|
|
.svo_shutdown = svc_rpcb_cleanup,
|
|
|
|
.svo_enqueue_xprt = svc_xprt_do_enqueue,
|
2015-06-08 22:03:32 +03:00
|
|
|
};
|
|
|
|
|
2012-04-25 18:22:54 +04:00
|
|
|
static struct svc_serv *lockd_create_svc(void)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2008-02-08 00:34:55 +03:00
|
|
|
struct svc_serv *serv;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Check whether we're already up and running.
|
|
|
|
*/
|
2012-01-31 15:08:05 +04:00
|
|
|
if (nlmsvc_rqst) {
|
2012-04-25 18:22:54 +04:00
|
|
|
/*
|
|
|
|
* Note: increase service usage, because later in case of error
|
|
|
|
* svc_destroy() will be called.
|
|
|
|
*/
|
|
|
|
svc_get(nlmsvc_rqst->rq_server);
|
|
|
|
return nlmsvc_rqst->rq_server;
|
2012-01-31 15:08:05 +04:00
|
|
|
}
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Sanity check: if there's no pid,
|
|
|
|
* we should be the first user ...
|
|
|
|
*/
|
2006-10-02 13:17:53 +04:00
|
|
|
if (nlmsvc_users)
|
2005-04-17 02:20:36 +04:00
|
|
|
printk(KERN_WARNING
|
|
|
|
"lockd_up: no pid, %d users??\n", nlmsvc_users);
|
|
|
|
|
2015-01-02 23:05:25 +03:00
|
|
|
if (!nlm_timeout)
|
|
|
|
nlm_timeout = LOCKD_DFLT_TIMEO;
|
|
|
|
nlmsvc_timeout = nlm_timeout * HZ;
|
|
|
|
|
2015-06-08 22:03:32 +03:00
|
|
|
serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, &lockd_sv_ops);
|
2005-04-17 02:20:36 +04:00
|
|
|
if (!serv) {
|
|
|
|
printk(KERN_WARNING "lockd_up: create service failed\n");
|
2012-04-25 18:22:54 +04:00
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
2015-12-12 00:46:00 +03:00
|
|
|
register_inetaddr_notifier(&lockd_inetaddr_notifier);
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
register_inet6addr_notifier(&lockd_inet6addr_notifier);
|
|
|
|
#endif
|
2012-04-25 18:23:16 +04:00
|
|
|
dprintk("lockd_up: service created\n");
|
2012-04-25 18:22:54 +04:00
|
|
|
return serv;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Bring up the lockd process if it's not already up.
|
|
|
|
*/
|
2019-04-09 19:13:39 +03:00
|
|
|
int lockd_up(struct net *net, const struct cred *cred)
|
2012-04-25 18:22:54 +04:00
|
|
|
{
|
|
|
|
struct svc_serv *serv;
|
2012-04-25 18:23:02 +04:00
|
|
|
int error;
|
2012-04-25 18:22:54 +04:00
|
|
|
|
|
|
|
mutex_lock(&nlmsvc_mutex);
|
|
|
|
|
|
|
|
serv = lockd_create_svc();
|
|
|
|
if (IS_ERR(serv)) {
|
|
|
|
error = PTR_ERR(serv);
|
|
|
|
goto err_create;
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2019-04-09 19:13:39 +03:00
|
|
|
error = lockd_up_net(serv, net, cred);
|
2017-10-20 17:33:18 +03:00
|
|
|
if (error < 0) {
|
|
|
|
lockd_unregister_notifiers();
|
|
|
|
goto err_put;
|
|
|
|
}
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2012-04-25 18:23:09 +04:00
|
|
|
error = lockd_start_svc(serv);
|
2017-10-20 17:33:18 +03:00
|
|
|
if (error < 0) {
|
|
|
|
lockd_down_net(serv, net);
|
|
|
|
goto err_put;
|
|
|
|
}
|
2012-04-25 18:23:02 +04:00
|
|
|
nlmsvc_users++;
|
2005-04-17 02:20:36 +04:00
|
|
|
/*
|
|
|
|
* Note: svc_serv structures have an initial use count of 1,
|
|
|
|
* so we exit through here on both success and failure.
|
|
|
|
*/
|
2016-06-30 17:39:32 +03:00
|
|
|
err_put:
|
2005-04-17 02:20:36 +04:00
|
|
|
svc_destroy(serv);
|
2012-04-25 18:22:54 +04:00
|
|
|
err_create:
|
2006-03-26 13:37:12 +04:00
|
|
|
mutex_unlock(&nlmsvc_mutex);
|
2005-04-17 02:20:36 +04:00
|
|
|
return error;
|
|
|
|
}
|
2008-12-23 23:21:33 +03:00
|
|
|
EXPORT_SYMBOL_GPL(lockd_up);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Decrement the user count and bring down lockd if we're the last.
|
|
|
|
*/
|
|
|
|
void
|
2012-03-29 18:54:33 +04:00
|
|
|
lockd_down(struct net *net)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2006-03-26 13:37:12 +04:00
|
|
|
mutex_lock(&nlmsvc_mutex);
|
2012-04-25 18:22:40 +04:00
|
|
|
lockd_down_net(nlmsvc_rqst->rq_server, net);
|
2005-04-17 02:20:36 +04:00
|
|
|
if (nlmsvc_users) {
|
2012-05-04 12:49:41 +04:00
|
|
|
if (--nlmsvc_users)
|
2005-04-17 02:20:36 +04:00
|
|
|
goto out;
|
2008-02-08 00:34:55 +03:00
|
|
|
} else {
|
|
|
|
printk(KERN_ERR "lockd_down: no users! task=%p\n",
|
|
|
|
nlmsvc_task);
|
|
|
|
BUG();
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2008-02-08 00:34:55 +03:00
|
|
|
if (!nlmsvc_task) {
|
|
|
|
printk(KERN_ERR "lockd_down: no lockd running.\n");
|
|
|
|
BUG();
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
2008-02-08 00:34:55 +03:00
|
|
|
kthread_stop(nlmsvc_task);
|
2012-04-25 18:23:16 +04:00
|
|
|
dprintk("lockd_down: service stopped\n");
|
2015-12-12 00:46:00 +03:00
|
|
|
lockd_svc_exit_thread();
|
2012-04-25 18:23:16 +04:00
|
|
|
dprintk("lockd_down: service destroyed\n");
|
2008-06-11 18:03:12 +04:00
|
|
|
nlmsvc_task = NULL;
|
|
|
|
nlmsvc_rqst = NULL;
|
2005-04-17 02:20:36 +04:00
|
|
|
out:
|
2006-03-26 13:37:12 +04:00
|
|
|
mutex_unlock(&nlmsvc_mutex);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
2008-12-23 23:21:33 +03:00
|
|
|
EXPORT_SYMBOL_GPL(lockd_down);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2008-03-14 21:18:30 +03:00
|
|
|
#ifdef CONFIG_SYSCTL
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
/*
|
|
|
|
* Sysctl parameters (same as module parameters, different interface).
|
|
|
|
*/
|
|
|
|
|
2014-06-07 01:38:02 +04:00
|
|
|
static struct ctl_table nlm_sysctls[] = {
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
|
|
|
.procname = "nlm_grace_period",
|
|
|
|
.data = &nlm_grace_period,
|
2005-07-13 12:10:47 +04:00
|
|
|
.maxlen = sizeof(unsigned long),
|
2005-04-17 02:20:36 +04:00
|
|
|
.mode = 0644,
|
2009-11-16 14:11:48 +03:00
|
|
|
.proc_handler = proc_doulongvec_minmax,
|
2005-04-17 02:20:36 +04:00
|
|
|
.extra1 = (unsigned long *) &nlm_grace_period_min,
|
|
|
|
.extra2 = (unsigned long *) &nlm_grace_period_max,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.procname = "nlm_timeout",
|
|
|
|
.data = &nlm_timeout,
|
2005-07-13 12:10:47 +04:00
|
|
|
.maxlen = sizeof(unsigned long),
|
2005-04-17 02:20:36 +04:00
|
|
|
.mode = 0644,
|
2009-11-16 14:11:48 +03:00
|
|
|
.proc_handler = proc_doulongvec_minmax,
|
2005-04-17 02:20:36 +04:00
|
|
|
.extra1 = (unsigned long *) &nlm_timeout_min,
|
|
|
|
.extra2 = (unsigned long *) &nlm_timeout_max,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.procname = "nlm_udpport",
|
|
|
|
.data = &nlm_udpport,
|
|
|
|
.maxlen = sizeof(int),
|
|
|
|
.mode = 0644,
|
2009-11-16 14:11:48 +03:00
|
|
|
.proc_handler = proc_dointvec_minmax,
|
2005-04-17 02:20:36 +04:00
|
|
|
.extra1 = (int *) &nlm_port_min,
|
|
|
|
.extra2 = (int *) &nlm_port_max,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.procname = "nlm_tcpport",
|
|
|
|
.data = &nlm_tcpport,
|
|
|
|
.maxlen = sizeof(int),
|
|
|
|
.mode = 0644,
|
2009-11-16 14:11:48 +03:00
|
|
|
.proc_handler = proc_dointvec_minmax,
|
2005-04-17 02:20:36 +04:00
|
|
|
.extra1 = (int *) &nlm_port_min,
|
|
|
|
.extra2 = (int *) &nlm_port_max,
|
|
|
|
},
|
2006-10-04 13:16:01 +04:00
|
|
|
{
|
|
|
|
.procname = "nsm_use_hostnames",
|
|
|
|
.data = &nsm_use_hostnames,
|
|
|
|
.maxlen = sizeof(int),
|
|
|
|
.mode = 0644,
|
2009-11-16 14:11:48 +03:00
|
|
|
.proc_handler = proc_dointvec,
|
2006-10-04 13:16:01 +04:00
|
|
|
},
|
2006-10-04 13:16:03 +04:00
|
|
|
{
|
|
|
|
.procname = "nsm_local_state",
|
|
|
|
.data = &nsm_local_state,
|
|
|
|
.maxlen = sizeof(int),
|
|
|
|
.mode = 0644,
|
2009-11-16 14:11:48 +03:00
|
|
|
.proc_handler = proc_dointvec,
|
2006-10-04 13:16:03 +04:00
|
|
|
},
|
2009-11-06 01:25:10 +03:00
|
|
|
{ }
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|
|
|
|
|
2014-06-07 01:38:02 +04:00
|
|
|
static struct ctl_table nlm_sysctl_dir[] = {
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
|
|
|
.procname = "nfs",
|
|
|
|
.mode = 0555,
|
|
|
|
.child = nlm_sysctls,
|
|
|
|
},
|
2009-11-06 01:25:10 +03:00
|
|
|
{ }
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|
|
|
|
|
2014-06-07 01:38:02 +04:00
|
|
|
static struct ctl_table nlm_sysctl_root[] = {
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
|
|
|
.procname = "fs",
|
|
|
|
.mode = 0555,
|
|
|
|
.child = nlm_sysctl_dir,
|
|
|
|
},
|
2009-11-06 01:25:10 +03:00
|
|
|
{ }
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|
|
|
|
|
2008-03-14 21:18:30 +03:00
|
|
|
#endif /* CONFIG_SYSCTL */
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
/*
|
2007-02-17 21:13:42 +03:00
|
|
|
* Module (and sysfs) parameters.
|
2005-04-17 02:20:36 +04:00
|
|
|
*/
|
|
|
|
|
|
|
|
#define param_set_min_max(name, type, which_strtol, min, max) \
|
treewide: Fix function prototypes for module_param_call()
Several function prototypes for the set/get functions defined by
module_param_call() have a slightly wrong argument types. This fixes
those in an effort to clean up the calls when running under type-enforced
compiler instrumentation for CFI. This is the result of running the
following semantic patch:
@match_module_param_call_function@
declarer name module_param_call;
identifier _name, _set_func, _get_func;
expression _arg, _mode;
@@
module_param_call(_name, _set_func, _get_func, _arg, _mode);
@fix_set_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._set_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _set_func(
-_val_type _val
+const char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
@fix_get_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._get_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _get_func(
-_val_type _val
+char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
Two additional by-hand changes are included for places where the above
Coccinelle script didn't notice them:
drivers/platform/x86/thinkpad_acpi.c
fs/lockd/svc.c
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-10-18 05:04:42 +03:00
|
|
|
static int param_set_##name(const char *val, const struct kernel_param *kp) \
|
2005-04-17 02:20:36 +04:00
|
|
|
{ \
|
|
|
|
char *endp; \
|
|
|
|
__typeof__(type) num = which_strtol(val, &endp, 0); \
|
|
|
|
if (endp == val || *endp || num < (min) || num > (max)) \
|
|
|
|
return -EINVAL; \
|
2012-02-07 08:35:42 +04:00
|
|
|
*((type *) kp->arg) = num; \
|
2005-04-17 02:20:36 +04:00
|
|
|
return 0; \
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int is_callback(u32 proc)
|
|
|
|
{
|
|
|
|
return proc == NLMPROC_GRANTED
|
|
|
|
|| proc == NLMPROC_GRANTED_MSG
|
|
|
|
|| proc == NLMPROC_TEST_RES
|
|
|
|
|| proc == NLMPROC_LOCK_RES
|
|
|
|
|| proc == NLMPROC_CANCEL_RES
|
|
|
|
|| proc == NLMPROC_UNLOCK_RES
|
|
|
|
|| proc == NLMPROC_NSM_NOTIFY;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int lockd_authenticate(struct svc_rqst *rqstp)
|
|
|
|
{
|
|
|
|
rqstp->rq_client = NULL;
|
|
|
|
switch (rqstp->rq_authop->flavour) {
|
|
|
|
case RPC_AUTH_NULL:
|
|
|
|
case RPC_AUTH_UNIX:
|
|
|
|
if (rqstp->rq_proc == 0)
|
|
|
|
return SVC_OK;
|
|
|
|
if (is_callback(rqstp->rq_proc)) {
|
|
|
|
/* Leave it to individual procedures to
|
|
|
|
* call nlmsvc_lookup_host(rqstp)
|
|
|
|
*/
|
|
|
|
return SVC_OK;
|
|
|
|
}
|
|
|
|
return svc_set_client(rqstp);
|
|
|
|
}
|
|
|
|
return SVC_DENIED;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
param_set_min_max(port, int, simple_strtol, 0, 65535)
|
|
|
|
param_set_min_max(grace_period, unsigned long, simple_strtoul,
|
|
|
|
nlm_grace_period_min, nlm_grace_period_max)
|
|
|
|
param_set_min_max(timeout, unsigned long, simple_strtoul,
|
|
|
|
nlm_timeout_min, nlm_timeout_max)
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
|
|
|
|
MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION ".");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong,
|
|
|
|
&nlm_grace_period, 0644);
|
|
|
|
module_param_call(nlm_timeout, param_set_timeout, param_get_ulong,
|
|
|
|
&nlm_timeout, 0644);
|
|
|
|
module_param_call(nlm_udpport, param_set_port, param_get_int,
|
|
|
|
&nlm_udpport, 0644);
|
|
|
|
module_param_call(nlm_tcpport, param_set_port, param_get_int,
|
|
|
|
&nlm_tcpport, 0644);
|
2006-10-04 13:16:01 +04:00
|
|
|
module_param(nsm_use_hostnames, bool, 0644);
|
2008-10-20 19:51:58 +04:00
|
|
|
module_param(nlm_max_connections, uint, 0644);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2012-01-31 15:07:57 +04:00
|
|
|
static int lockd_init_net(struct net *net)
|
|
|
|
{
|
2012-07-25 16:56:43 +04:00
|
|
|
struct lockd_net *ln = net_generic(net, lockd_net_id);
|
|
|
|
|
|
|
|
INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender);
|
2014-09-13 00:40:20 +04:00
|
|
|
INIT_LIST_HEAD(&ln->lockd_manager.list);
|
2015-08-06 19:47:02 +03:00
|
|
|
ln->lockd_manager.block_opens = false;
|
2015-09-23 15:49:29 +03:00
|
|
|
INIT_LIST_HEAD(&ln->nsm_handles);
|
2012-01-31 15:07:57 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void lockd_exit_net(struct net *net)
|
|
|
|
{
|
2017-11-06 16:23:24 +03:00
|
|
|
struct lockd_net *ln = net_generic(net, lockd_net_id);
|
|
|
|
|
|
|
|
WARN_ONCE(!list_empty(&ln->lockd_manager.list),
|
|
|
|
"net %x %s: lockd_manager.list is not empty\n",
|
|
|
|
net->ns.inum, __func__);
|
|
|
|
WARN_ONCE(!list_empty(&ln->nsm_handles),
|
|
|
|
"net %x %s: nsm_handles list is not empty\n",
|
|
|
|
net->ns.inum, __func__);
|
|
|
|
WARN_ONCE(delayed_work_pending(&ln->grace_period_end),
|
|
|
|
"net %x %s: grace_period_end was not cancelled\n",
|
|
|
|
net->ns.inum, __func__);
|
2012-01-31 15:07:57 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct pernet_operations lockd_net_ops = {
|
|
|
|
.init = lockd_init_net,
|
|
|
|
.exit = lockd_exit_net,
|
|
|
|
.id = &lockd_net_id,
|
|
|
|
.size = sizeof(struct lockd_net),
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
/*
|
|
|
|
* Initialising and terminating the module.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int __init init_nlm(void)
|
|
|
|
{
|
2012-01-31 15:07:57 +04:00
|
|
|
int err;
|
|
|
|
|
2008-03-14 21:18:30 +03:00
|
|
|
#ifdef CONFIG_SYSCTL
|
2012-01-31 15:07:57 +04:00
|
|
|
err = -ENOMEM;
|
2007-02-14 11:34:09 +03:00
|
|
|
nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root);
|
2012-01-31 15:07:57 +04:00
|
|
|
if (nlm_sysctl_table == NULL)
|
|
|
|
goto err_sysctl;
|
|
|
|
#endif
|
|
|
|
err = register_pernet_subsys(&lockd_net_ops);
|
|
|
|
if (err)
|
|
|
|
goto err_pernet;
|
2014-09-13 00:40:20 +04:00
|
|
|
|
|
|
|
err = lockd_create_procfs();
|
|
|
|
if (err)
|
|
|
|
goto err_procfs;
|
|
|
|
|
2008-03-14 21:18:30 +03:00
|
|
|
return 0;
|
2012-01-31 15:07:57 +04:00
|
|
|
|
2014-09-13 00:40:20 +04:00
|
|
|
err_procfs:
|
|
|
|
unregister_pernet_subsys(&lockd_net_ops);
|
2012-01-31 15:07:57 +04:00
|
|
|
err_pernet:
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
|
|
unregister_sysctl_table(nlm_sysctl_table);
|
|
|
|
err_sysctl:
|
2014-05-02 01:15:02 +04:00
|
|
|
#endif
|
2012-01-31 15:07:57 +04:00
|
|
|
return err;
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit exit_nlm(void)
|
|
|
|
{
|
|
|
|
/* FIXME: delete all NLM clients */
|
|
|
|
nlm_shutdown_hosts();
|
2014-09-13 00:40:20 +04:00
|
|
|
lockd_remove_procfs();
|
2012-01-31 15:07:57 +04:00
|
|
|
unregister_pernet_subsys(&lockd_net_ops);
|
2008-03-14 21:18:30 +03:00
|
|
|
#ifdef CONFIG_SYSCTL
|
2005-04-17 02:20:36 +04:00
|
|
|
unregister_sysctl_table(nlm_sysctl_table);
|
2008-03-14 21:18:30 +03:00
|
|
|
#endif
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
module_init(init_nlm);
|
|
|
|
module_exit(exit_nlm);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Define NLM program and procedures
|
|
|
|
*/
|
2017-05-09 00:40:27 +03:00
|
|
|
static unsigned int nlmsvc_version1_count[17];
|
2017-05-12 17:21:37 +03:00
|
|
|
static const struct svc_version nlmsvc_version1 = {
|
|
|
|
.vs_vers = 1,
|
|
|
|
.vs_nproc = 17,
|
|
|
|
.vs_proc = nlmsvc_procedures,
|
|
|
|
.vs_count = nlmsvc_version1_count,
|
|
|
|
.vs_xdrsize = NLMSVC_XDRSIZE,
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|
2017-05-09 00:40:27 +03:00
|
|
|
static unsigned int nlmsvc_version3_count[24];
|
2017-05-12 17:21:37 +03:00
|
|
|
static const struct svc_version nlmsvc_version3 = {
|
|
|
|
.vs_vers = 3,
|
|
|
|
.vs_nproc = 24,
|
|
|
|
.vs_proc = nlmsvc_procedures,
|
|
|
|
.vs_count = nlmsvc_version3_count,
|
|
|
|
.vs_xdrsize = NLMSVC_XDRSIZE,
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|
|
|
|
#ifdef CONFIG_LOCKD_V4
|
2017-05-09 00:40:27 +03:00
|
|
|
static unsigned int nlmsvc_version4_count[24];
|
2017-05-12 17:21:37 +03:00
|
|
|
static const struct svc_version nlmsvc_version4 = {
|
|
|
|
.vs_vers = 4,
|
|
|
|
.vs_nproc = 24,
|
|
|
|
.vs_proc = nlmsvc_procedures4,
|
|
|
|
.vs_count = nlmsvc_version4_count,
|
|
|
|
.vs_xdrsize = NLMSVC_XDRSIZE,
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|
|
|
|
#endif
|
2017-05-12 17:21:37 +03:00
|
|
|
static const struct svc_version *nlmsvc_version[] = {
|
2005-04-17 02:20:36 +04:00
|
|
|
[1] = &nlmsvc_version1,
|
|
|
|
[3] = &nlmsvc_version3,
|
|
|
|
#ifdef CONFIG_LOCKD_V4
|
|
|
|
[4] = &nlmsvc_version4,
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct svc_stat nlmsvc_stats;
|
|
|
|
|
2006-03-24 14:15:34 +03:00
|
|
|
#define NLM_NRVERS ARRAY_SIZE(nlmsvc_version)
|
2005-04-17 02:20:36 +04:00
|
|
|
static struct svc_program nlmsvc_program = {
|
|
|
|
.pg_prog = NLM_PROGRAM, /* program number */
|
|
|
|
.pg_nvers = NLM_NRVERS, /* number of entries in nlmsvc_version */
|
|
|
|
.pg_vers = nlmsvc_version, /* version table */
|
|
|
|
.pg_name = "lockd", /* service name */
|
|
|
|
.pg_class = "nfsd", /* share authentication with nfsd */
|
|
|
|
.pg_stats = &nlmsvc_stats, /* stats table */
|
2019-04-09 18:46:15 +03:00
|
|
|
.pg_authenticate = &lockd_authenticate, /* export authentication */
|
|
|
|
.pg_init_request = svc_generic_init_request,
|
2019-04-09 18:46:17 +03:00
|
|
|
.pg_rpcbind_set = svc_generic_rpcbind_set,
|
2005-04-17 02:20:36 +04:00
|
|
|
};
|