1322 lines
37 KiB
C
1322 lines
37 KiB
C
/* $NetBSD: lock_proc.c,v 1.7 2000/10/11 20:23:56 is Exp $ */
|
|
/* $FreeBSD$ */
|
|
/*
|
|
* Copyright (c) 1995
|
|
* A.R. Gordon (andrew.gordon@net-tel.co.uk). All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the FreeBSD project
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ANDREW GORDON AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: lock_proc.c,v 1.7 2000/10/11 20:23:56 is Exp $");
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
#include <unistd.h>
|
|
#include <netconfig.h>
|
|
|
|
#include <rpc/rpc.h>
|
|
#include <rpcsvc/sm_inter.h>
|
|
|
|
#include "lockd.h"
|
|
#include <rpcsvc/nlm_prot.h>
|
|
#include "lockd_lock.h"
|
|
|
|
|
|
#define CLIENT_CACHE_SIZE 64 /* No. of client sockets cached */
|
|
#define CLIENT_CACHE_LIFETIME 120 /* In seconds */
|
|
|
|
#define getrpcaddr(rqstp) (struct sockaddr *)(svc_getrpccaller((rqstp)->rq_xprt)->buf)
|
|
|
|
static void log_from_addr(const char *, struct svc_req *);
|
|
static void log_netobj(netobj *obj);
|
|
static int addrcmp(struct sockaddr *, struct sockaddr *);
|
|
|
|
/* log_from_addr ----------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Log name of function called and source address
|
|
* Returns: Nothing
|
|
* Notes: Extracts the source address from the transport handle
|
|
* passed in as part of the called procedure specification
|
|
*/
|
|
static void
|
|
log_from_addr(const char *fun_name, struct svc_req *req)
|
|
{
|
|
struct sockaddr *addr;
|
|
char hostname_buf[NI_MAXHOST];
|
|
|
|
addr = svc_getrpccaller(req->rq_xprt)->buf;
|
|
if (getnameinfo(addr , addr->sa_len, hostname_buf, sizeof hostname_buf,
|
|
NULL, 0, 0) != 0)
|
|
return;
|
|
|
|
syslog(LOG_DEBUG, "%s from %s", fun_name, hostname_buf);
|
|
}
|
|
|
|
/* log_netobj ----------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Log a netobj
|
|
* Returns: Nothing
|
|
* Notes: This function should only really be called as part of
|
|
* a debug subsystem.
|
|
*/
|
|
static void
|
|
log_netobj(netobj *obj)
|
|
{
|
|
char objvalbuffer[(sizeof(char)*2)*MAX_NETOBJ_SZ+2];
|
|
char objascbuffer[sizeof(char)*MAX_NETOBJ_SZ+1];
|
|
unsigned int i, maxlen;
|
|
char *tmp1, *tmp2;
|
|
|
|
/* Notify of potential security attacks */
|
|
if (obj->n_len > MAX_NETOBJ_SZ) {
|
|
syslog(LOG_DEBUG, "SOMEONE IS TRYING TO DO SOMETHING NASTY!\n");
|
|
syslog(LOG_DEBUG, "netobj too large! Should be %d was %d\n",
|
|
MAX_NETOBJ_SZ, obj->n_len);
|
|
}
|
|
/* Prevent the security hazard from the buffer overflow */
|
|
maxlen = (obj->n_len < MAX_NETOBJ_SZ ? obj->n_len : MAX_NETOBJ_SZ);
|
|
for (i=0, tmp1 = objvalbuffer, tmp2 = objascbuffer; i < obj->n_len;
|
|
i++, tmp1 +=2, tmp2 +=1) {
|
|
sprintf(tmp1,"%02X",*(obj->n_bytes+i));
|
|
sprintf(tmp2,"%c",*(obj->n_bytes+i));
|
|
}
|
|
*tmp1 = '\0';
|
|
*tmp2 = '\0';
|
|
syslog(LOG_DEBUG,"netobjvals: %s\n",objvalbuffer);
|
|
syslog(LOG_DEBUG,"netobjascs: %s\n",objascbuffer);
|
|
}
|
|
/* get_client -------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Get a CLIENT* for making RPC calls to lockd on given host
|
|
* Returns: CLIENT* pointer, from clnt_udp_create, or NULL if error
|
|
* Notes: Creating a CLIENT* is quite expensive, involving a
|
|
* conversation with the remote portmapper to get the
|
|
* port number. Since a given client is quite likely
|
|
* to make several locking requests in succession, it is
|
|
* desirable to cache the created CLIENT*.
|
|
*
|
|
* Since we are using UDP rather than TCP, there is no cost
|
|
* to the remote system in keeping these cached indefinitely.
|
|
* Unfortunately there is a snag: if the remote system
|
|
* reboots, the cached portmapper results will be invalid,
|
|
* and we will never detect this since all of the xxx_msg()
|
|
* calls return no result - we just fire off a udp packet
|
|
* and hope for the best.
|
|
*
|
|
* We solve this by discarding cached values after two
|
|
* minutes, regardless of whether they have been used
|
|
* in the meanwhile (since a bad one might have been used
|
|
* plenty of times, as the host keeps retrying the request
|
|
* and we keep sending the reply back to the wrong port).
|
|
*
|
|
* Given that the entries will always expire in the order
|
|
* that they were created, there is no point in a LRU
|
|
* algorithm for when the cache gets full - entries are
|
|
* always re-used in sequence.
|
|
*/
|
|
static CLIENT *clnt_cache_ptr[CLIENT_CACHE_SIZE];
|
|
static long clnt_cache_time[CLIENT_CACHE_SIZE]; /* time entry created */
|
|
static struct sockaddr_storage clnt_cache_addr[CLIENT_CACHE_SIZE];
|
|
static rpcvers_t clnt_cache_vers[CLIENT_CACHE_SIZE];
|
|
static int clnt_cache_next_to_use = 0;
|
|
|
|
static int
|
|
addrcmp(struct sockaddr *sa1, struct sockaddr *sa2)
|
|
{
|
|
int len;
|
|
void *p1, *p2;
|
|
|
|
if (sa1->sa_family != sa2->sa_family)
|
|
return -1;
|
|
|
|
switch (sa1->sa_family) {
|
|
case AF_INET:
|
|
p1 = &((struct sockaddr_in *)sa1)->sin_addr;
|
|
p2 = &((struct sockaddr_in *)sa2)->sin_addr;
|
|
len = 4;
|
|
break;
|
|
case AF_INET6:
|
|
p1 = &((struct sockaddr_in6 *)sa1)->sin6_addr;
|
|
p2 = &((struct sockaddr_in6 *)sa2)->sin6_addr;
|
|
len = 16;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return memcmp(p1, p2, len);
|
|
}
|
|
|
|
CLIENT *
|
|
get_client(struct sockaddr *host_addr, rpcvers_t vers)
|
|
{
|
|
CLIENT *client;
|
|
struct timeval retry_time, time_now;
|
|
int error, i;
|
|
const char *netid;
|
|
struct netconfig *nconf;
|
|
char host[NI_MAXHOST];
|
|
uid_t old_euid;
|
|
int clnt_fd;
|
|
|
|
gettimeofday(&time_now, NULL);
|
|
|
|
/*
|
|
* Search for the given client in the cache, zapping any expired
|
|
* entries that we happen to notice in passing.
|
|
*/
|
|
for (i = 0; i < CLIENT_CACHE_SIZE; i++) {
|
|
client = clnt_cache_ptr[i];
|
|
if (client && ((clnt_cache_time[i] + CLIENT_CACHE_LIFETIME)
|
|
< time_now.tv_sec)) {
|
|
/* Cache entry has expired. */
|
|
if (debug_level > 3)
|
|
syslog(LOG_DEBUG, "Expired CLIENT* in cache");
|
|
clnt_cache_time[i] = 0L;
|
|
clnt_destroy(client);
|
|
clnt_cache_ptr[i] = NULL;
|
|
client = NULL;
|
|
}
|
|
if (client && !addrcmp((struct sockaddr *)&clnt_cache_addr[i],
|
|
host_addr) && clnt_cache_vers[i] == vers) {
|
|
/* Found it! */
|
|
if (debug_level > 3)
|
|
syslog(LOG_DEBUG, "Found CLIENT* in cache");
|
|
return (client);
|
|
}
|
|
}
|
|
|
|
if (debug_level > 3)
|
|
syslog(LOG_DEBUG, "CLIENT* not found in cache, creating");
|
|
|
|
/* Not found in cache. Free the next entry if it is in use. */
|
|
if (clnt_cache_ptr[clnt_cache_next_to_use]) {
|
|
clnt_destroy(clnt_cache_ptr[clnt_cache_next_to_use]);
|
|
clnt_cache_ptr[clnt_cache_next_to_use] = NULL;
|
|
}
|
|
|
|
/*
|
|
* Need a host string for clnt_tp_create. Use NI_NUMERICHOST
|
|
* to avoid DNS lookups.
|
|
*/
|
|
error = getnameinfo(host_addr, host_addr->sa_len, host, sizeof host,
|
|
NULL, 0, NI_NUMERICHOST);
|
|
if (error != 0) {
|
|
syslog(LOG_ERR, "unable to get name string for caller: %s",
|
|
gai_strerror(error));
|
|
return NULL;
|
|
}
|
|
|
|
#if 1
|
|
if (host_addr->sa_family == AF_INET6)
|
|
netid = "udp6";
|
|
else
|
|
netid = "udp";
|
|
#else
|
|
if (host_addr->sa_family == AF_INET6)
|
|
netid = "tcp6";
|
|
else
|
|
netid = "tcp";
|
|
#endif
|
|
nconf = getnetconfigent(netid);
|
|
if (nconf == NULL) {
|
|
syslog(LOG_ERR, "could not get netconfig info for '%s': "
|
|
"no /etc/netconfig file?", netid);
|
|
return NULL;
|
|
}
|
|
|
|
client = clnt_tp_create(host, NLM_PROG, vers, nconf);
|
|
freenetconfigent(nconf);
|
|
|
|
if (!client) {
|
|
syslog(LOG_ERR, "%s", clnt_spcreateerror("clntudp_create"));
|
|
syslog(LOG_ERR, "Unable to return result to %s", host);
|
|
return NULL;
|
|
}
|
|
|
|
/* Get the FD of the client, for bindresvport. */
|
|
clnt_control(client, CLGET_FD, &clnt_fd);
|
|
|
|
/* Regain root privileges, for bindresvport. */
|
|
old_euid = geteuid();
|
|
seteuid(0);
|
|
|
|
/*
|
|
* Bind the client FD to a reserved port.
|
|
* Some NFS servers reject any NLM request from a non-reserved port.
|
|
*/
|
|
bindresvport(clnt_fd, NULL);
|
|
|
|
/* Drop root privileges again. */
|
|
seteuid(old_euid);
|
|
|
|
/* Success - update the cache entry */
|
|
clnt_cache_ptr[clnt_cache_next_to_use] = client;
|
|
memcpy(&clnt_cache_addr[clnt_cache_next_to_use], host_addr,
|
|
host_addr->sa_len);
|
|
clnt_cache_vers[clnt_cache_next_to_use] = vers;
|
|
clnt_cache_time[clnt_cache_next_to_use] = time_now.tv_sec;
|
|
if (++clnt_cache_next_to_use >= CLIENT_CACHE_SIZE)
|
|
clnt_cache_next_to_use = 0;
|
|
|
|
/*
|
|
* Disable the default timeout, so we can specify our own in calls
|
|
* to clnt_call(). (Note that the timeout is a different concept
|
|
* from the retry period set in clnt_udp_create() above.)
|
|
*/
|
|
retry_time.tv_sec = -1;
|
|
retry_time.tv_usec = -1;
|
|
clnt_control(client, CLSET_TIMEOUT, (char *)&retry_time);
|
|
|
|
if (debug_level > 3)
|
|
syslog(LOG_DEBUG, "Created CLIENT* for %s", host);
|
|
return client;
|
|
}
|
|
|
|
|
|
/* transmit_result --------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Transmit result for nlm_xxx_msg pseudo-RPCs
|
|
* Returns: Nothing - we have no idea if the datagram got there
|
|
* Notes: clnt_call() will always fail (with timeout) as we are
|
|
* calling it with timeout 0 as a hack to just issue a datagram
|
|
* without expecting a result
|
|
*/
|
|
void
|
|
transmit_result(int opcode, nlm_res *result, struct sockaddr *addr)
|
|
{
|
|
static char dummy;
|
|
CLIENT *cli;
|
|
struct timeval timeo;
|
|
int success;
|
|
|
|
if ((cli = get_client(addr, NLM_VERS)) != NULL) {
|
|
timeo.tv_sec = 0; /* No timeout - not expecting response */
|
|
timeo.tv_usec = 0;
|
|
|
|
success = clnt_call(cli, opcode, (xdrproc_t)xdr_nlm_res, result,
|
|
(xdrproc_t)xdr_void, &dummy, timeo);
|
|
|
|
if (debug_level > 2)
|
|
syslog(LOG_DEBUG, "clnt_call returns %d(%s)",
|
|
success, clnt_sperrno(success));
|
|
}
|
|
}
|
|
/* transmit4_result --------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Transmit result for nlm4_xxx_msg pseudo-RPCs
|
|
* Returns: Nothing - we have no idea if the datagram got there
|
|
* Notes: clnt_call() will always fail (with timeout) as we are
|
|
* calling it with timeout 0 as a hack to just issue a datagram
|
|
* without expecting a result
|
|
*/
|
|
void
|
|
transmit4_result(int opcode, nlm4_res *result, struct sockaddr *addr)
|
|
{
|
|
static char dummy;
|
|
CLIENT *cli;
|
|
struct timeval timeo;
|
|
int success;
|
|
|
|
if ((cli = get_client(addr, NLM_VERS4)) != NULL) {
|
|
timeo.tv_sec = 0; /* No timeout - not expecting response */
|
|
timeo.tv_usec = 0;
|
|
|
|
success = clnt_call(cli, opcode,
|
|
(xdrproc_t)xdr_nlm4_res, result,
|
|
(xdrproc_t)xdr_void, &dummy, timeo);
|
|
|
|
if (debug_level > 2)
|
|
syslog(LOG_DEBUG, "clnt_call returns %d(%s)",
|
|
success, clnt_sperrno(success));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* converts a struct nlm_lock to struct nlm4_lock
|
|
*/
|
|
static void
|
|
nlmtonlm4(struct nlm_lock *arg, struct nlm4_lock *arg4)
|
|
{
|
|
arg4->caller_name = arg->caller_name;
|
|
arg4->fh = arg->fh;
|
|
arg4->oh = arg->oh;
|
|
arg4->svid = arg->svid;
|
|
arg4->l_offset = arg->l_offset;
|
|
arg4->l_len = arg->l_len;
|
|
}
|
|
/* ------------------------------------------------------------------------- */
|
|
/*
|
|
* Functions for Unix<->Unix locking (ie. monitored locking, with rpc.statd
|
|
* involved to ensure reclaim of locks after a crash of the "stateless"
|
|
* server.
|
|
*
|
|
* These all come in two flavours - nlm_xxx() and nlm_xxx_msg().
|
|
* The first are standard RPCs with argument and result.
|
|
* The nlm_xxx_msg() calls implement exactly the same functions, but
|
|
* use two pseudo-RPCs (one in each direction). These calls are NOT
|
|
* standard use of the RPC protocol in that they do not return a result
|
|
* at all (NB. this is quite different from returning a void result).
|
|
* The effect of this is to make the nlm_xxx_msg() calls simple unacknowledged
|
|
* datagrams, requiring higher-level code to perform retries.
|
|
*
|
|
* Despite the disadvantages of the nlm_xxx_msg() approach (some of which
|
|
* are documented in the comments to get_client() above), this is the
|
|
* interface used by all current commercial NFS implementations
|
|
* [Solaris, SCO, AIX etc.]. This is presumed to be because these allow
|
|
* implementations to continue using the standard RPC libraries, while
|
|
* avoiding the block-until-result nature of the library interface.
|
|
*
|
|
* No client implementations have been identified so far that make use
|
|
* of the true RPC version (early SunOS releases would be a likely candidate
|
|
* for testing).
|
|
*/
|
|
|
|
/* nlm_test ---------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Test whether a specified lock would be granted if requested
|
|
* Returns: nlm_granted (or error code)
|
|
* Notes:
|
|
*/
|
|
nlm_testres *
|
|
nlm_test_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_testres res;
|
|
struct nlm4_lock arg4;
|
|
struct nlm4_holder *holder;
|
|
nlmtonlm4(&arg->alock, &arg4);
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_test", rqstp);
|
|
|
|
holder = testlock(&arg4, arg->exclusive, 0);
|
|
/*
|
|
* Copy the cookie from the argument into the result. Note that this
|
|
* is slightly hazardous, as the structure contains a pointer to a
|
|
* malloc()ed buffer that will get freed by the caller. However, the
|
|
* main function transmits the result before freeing the argument
|
|
* so it is in fact safe.
|
|
*/
|
|
res.cookie = arg->cookie;
|
|
if (holder == NULL) {
|
|
res.stat.stat = nlm_granted;
|
|
} else {
|
|
res.stat.stat = nlm_denied;
|
|
memcpy(&res.stat.nlm_testrply_u.holder, holder,
|
|
sizeof(struct nlm_holder));
|
|
res.stat.nlm_testrply_u.holder.l_offset = holder->l_offset;
|
|
res.stat.nlm_testrply_u.holder.l_len = holder->l_len;
|
|
}
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm_test_msg_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
nlm_testres res;
|
|
static char dummy;
|
|
struct sockaddr *addr;
|
|
CLIENT *cli;
|
|
int success;
|
|
struct timeval timeo;
|
|
struct nlm4_lock arg4;
|
|
struct nlm4_holder *holder;
|
|
|
|
nlmtonlm4(&arg->alock, &arg4);
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_test_msg", rqstp);
|
|
|
|
holder = testlock(&arg4, arg->exclusive, 0);
|
|
|
|
res.cookie = arg->cookie;
|
|
if (holder == NULL) {
|
|
res.stat.stat = nlm_granted;
|
|
} else {
|
|
res.stat.stat = nlm_denied;
|
|
memcpy(&res.stat.nlm_testrply_u.holder, holder,
|
|
sizeof(struct nlm_holder));
|
|
res.stat.nlm_testrply_u.holder.l_offset = holder->l_offset;
|
|
res.stat.nlm_testrply_u.holder.l_len = holder->l_len;
|
|
}
|
|
|
|
/*
|
|
* nlm_test has different result type to the other operations, so
|
|
* can't use transmit_result() in this case
|
|
*/
|
|
addr = svc_getrpccaller(rqstp->rq_xprt)->buf;
|
|
if ((cli = get_client(addr, NLM_VERS)) != NULL) {
|
|
timeo.tv_sec = 0; /* No timeout - not expecting response */
|
|
timeo.tv_usec = 0;
|
|
|
|
success = clnt_call(cli, NLM_TEST_RES,
|
|
(xdrproc_t)xdr_nlm_testres, &res,
|
|
(xdrproc_t)xdr_void, &dummy, timeo);
|
|
|
|
if (debug_level > 2)
|
|
syslog(LOG_DEBUG, "clnt_call returns %d", success);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_lock ---------------------------------------------------------------- */
|
|
/*
|
|
* Purposes: Establish a lock
|
|
* Returns: granted, denied or blocked
|
|
* Notes: *** grace period support missing
|
|
*/
|
|
nlm_res *
|
|
nlm_lock_1_svc(nlm_lockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
struct nlm4_lockargs arg4;
|
|
nlmtonlm4(&arg->alock, &arg4.alock);
|
|
arg4.cookie = arg->cookie;
|
|
arg4.block = arg->block;
|
|
arg4.exclusive = arg->exclusive;
|
|
arg4.reclaim = arg->reclaim;
|
|
arg4.state = arg->state;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_lock", rqstp);
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_1() */
|
|
res.cookie = arg->cookie;
|
|
|
|
res.stat.stat = getlock(&arg4, rqstp, LOCK_MON);
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm_lock_msg_1_svc(nlm_lockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
struct nlm4_lockargs arg4;
|
|
|
|
nlmtonlm4(&arg->alock, &arg4.alock);
|
|
arg4.cookie = arg->cookie;
|
|
arg4.block = arg->block;
|
|
arg4.exclusive = arg->exclusive;
|
|
arg4.reclaim = arg->reclaim;
|
|
arg4.state = arg->state;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_lock_msg", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat.stat = getlock(&arg4, rqstp, LOCK_ASYNC | LOCK_MON);
|
|
transmit_result(NLM_LOCK_RES, &res, getrpcaddr(rqstp));
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_cancel -------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Cancel a blocked lock request
|
|
* Returns: granted or denied
|
|
* Notes:
|
|
*/
|
|
nlm_res *
|
|
nlm_cancel_1_svc(nlm_cancargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
struct nlm4_lock arg4;
|
|
|
|
nlmtonlm4(&arg->alock, &arg4);
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_cancel", rqstp);
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_1() */
|
|
res.cookie = arg->cookie;
|
|
|
|
/*
|
|
* Since at present we never return 'nlm_blocked', there can never be
|
|
* a lock to cancel, so this call always fails.
|
|
*/
|
|
res.stat.stat = unlock(&arg4, LOCK_CANCEL);
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm_cancel_msg_1_svc(nlm_cancargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
struct nlm4_lock arg4;
|
|
|
|
nlmtonlm4(&arg->alock, &arg4);
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_cancel_msg", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
/*
|
|
* Since at present we never return 'nlm_blocked', there can never be
|
|
* a lock to cancel, so this call always fails.
|
|
*/
|
|
res.stat.stat = unlock(&arg4, LOCK_CANCEL);
|
|
transmit_result(NLM_CANCEL_RES, &res, getrpcaddr(rqstp));
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_unlock -------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Release an existing lock
|
|
* Returns: Always granted, unless during grace period
|
|
* Notes: "no such lock" error condition is ignored, as the
|
|
* protocol uses unreliable UDP datagrams, and may well
|
|
* re-try an unlock that has already succeeded.
|
|
*/
|
|
nlm_res *
|
|
nlm_unlock_1_svc(nlm_unlockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
struct nlm4_lock arg4;
|
|
|
|
nlmtonlm4(&arg->alock, &arg4);
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_unlock", rqstp);
|
|
|
|
res.stat.stat = unlock(&arg4, 0);
|
|
res.cookie = arg->cookie;
|
|
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm_unlock_msg_1_svc(nlm_unlockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
struct nlm4_lock arg4;
|
|
|
|
nlmtonlm4(&arg->alock, &arg4);
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_unlock_msg", rqstp);
|
|
|
|
res.stat.stat = unlock(&arg4, 0);
|
|
res.cookie = arg->cookie;
|
|
|
|
transmit_result(NLM_UNLOCK_RES, &res, getrpcaddr(rqstp));
|
|
return (NULL);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/*
|
|
* Client-side pseudo-RPCs for results. Note that for the client there
|
|
* are only nlm_xxx_msg() versions of each call, since the 'real RPC'
|
|
* version returns the results in the RPC result, and so the client
|
|
* does not normally receive incoming RPCs.
|
|
*
|
|
* The exception to this is nlm_granted(), which is genuinely an RPC
|
|
* call from the server to the client - a 'call-back' in normal procedure
|
|
* call terms.
|
|
*/
|
|
|
|
/* nlm_granted ------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Receive notification that formerly blocked lock now granted
|
|
* Returns: always success ('granted')
|
|
* Notes:
|
|
*/
|
|
nlm_res *
|
|
nlm_granted_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_granted", rqstp);
|
|
|
|
res.stat.stat = lock_answer(arg->alock.svid, &arg->cookie,
|
|
nlm_granted, NULL, NLM_VERS) == 0 ?
|
|
nlm_granted : nlm_denied;
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_1() */
|
|
res.cookie = arg->cookie;
|
|
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm_granted_msg_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_granted_msg", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat.stat = lock_answer(arg->alock.svid, &arg->cookie,
|
|
nlm_granted, NULL, NLM_VERS) == 0 ?
|
|
nlm_granted : nlm_denied;
|
|
|
|
transmit_result(NLM_GRANTED_RES, &res, getrpcaddr(rqstp));
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_test_res ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_test_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm_test_res_1_svc(nlm_testres *arg, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm_test_res", rqstp);
|
|
(void)lock_answer(-1, &arg->cookie, arg->stat.stat,
|
|
&arg->stat.nlm_testrply_u.holder.svid, NLM_VERS);
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_lock_res ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_lock_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm_lock_res_1_svc(nlm_res *arg, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm_lock_res", rqstp);
|
|
|
|
(void)lock_answer(-1, &arg->cookie, arg->stat.stat, NULL, NLM_VERS);
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_cancel_res ---------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_cancel_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm_cancel_res_1_svc(nlm_res *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm_cancel_res", rqstp);
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_unlock_res ---------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_unlock_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm_unlock_res_1_svc(nlm_res *arg, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm_unlock_res", rqstp);
|
|
|
|
lock_answer(-1, &arg->cookie, arg->stat.stat, NULL, NLM_VERS);
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_granted_res --------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_granted_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm_granted_res_1_svc(nlm_res *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm_granted_res", rqstp);
|
|
return (NULL);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/*
|
|
* Calls for PCNFS locking (aka non-monitored locking, no involvement
|
|
* of rpc.statd).
|
|
*
|
|
* These are all genuine RPCs - no nlm_xxx_msg() nonsense here.
|
|
*/
|
|
|
|
/* nlm_share --------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Establish a DOS-style lock
|
|
* Returns: success or failure
|
|
* Notes: Blocking locks are not supported - client is expected
|
|
* to retry if required.
|
|
*/
|
|
nlm_shareres *
|
|
nlm_share_3_svc(nlm_shareargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_shareres res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_share", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat = nlm_granted;
|
|
res.sequence = 1234356; /* X/Open says this field is ignored? */
|
|
return (&res);
|
|
}
|
|
|
|
/* nlm_unshare ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Release a DOS-style lock
|
|
* Returns: nlm_granted, unless in grace period
|
|
* Notes:
|
|
*/
|
|
nlm_shareres *
|
|
nlm_unshare_3_svc(nlm_shareargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_shareres res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_unshare", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat = nlm_granted;
|
|
res.sequence = 1234356; /* X/Open says this field is ignored? */
|
|
return (&res);
|
|
}
|
|
|
|
/* nlm_nm_lock ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: non-monitored version of nlm_lock()
|
|
* Returns: as for nlm_lock()
|
|
* Notes: These locks are in the same style as the standard nlm_lock,
|
|
* but the rpc.statd should not be called to establish a
|
|
* monitor for the client machine, since that machine is
|
|
* declared not to be running a rpc.statd, and so would not
|
|
* respond to the statd protocol.
|
|
*/
|
|
nlm_res *
|
|
nlm_nm_lock_3_svc(nlm_lockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_nm_lock", rqstp);
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_1() */
|
|
res.cookie = arg->cookie;
|
|
res.stat.stat = nlm_granted;
|
|
return (&res);
|
|
}
|
|
|
|
/* nlm_free_all ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Release all locks held by a named client
|
|
* Returns: Nothing
|
|
* Notes: Potential denial of service security problem here - the
|
|
* locks to be released are specified by a host name, independent
|
|
* of the address from which the request has arrived.
|
|
* Should probably be rejected if the named host has been
|
|
* using monitored locks.
|
|
*/
|
|
void *
|
|
nlm_free_all_3_svc(nlm_notify *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
static char dummy;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_free_all", rqstp);
|
|
return (&dummy);
|
|
}
|
|
|
|
/* calls for nlm version 4 (NFSv3) */
|
|
/* nlm_test ---------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Test whether a specified lock would be granted if requested
|
|
* Returns: nlm_granted (or error code)
|
|
* Notes:
|
|
*/
|
|
nlm4_testres *
|
|
nlm4_test_4_svc(nlm4_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_testres res;
|
|
struct nlm4_holder *holder;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_test", rqstp);
|
|
if (debug_level > 5) {
|
|
syslog(LOG_DEBUG, "Locking arguments:\n");
|
|
log_netobj(&(arg->cookie));
|
|
syslog(LOG_DEBUG, "Alock arguments:\n");
|
|
syslog(LOG_DEBUG, "Caller Name: %s\n",arg->alock.caller_name);
|
|
syslog(LOG_DEBUG, "File Handle:\n");
|
|
log_netobj(&(arg->alock.fh));
|
|
syslog(LOG_DEBUG, "Owner Handle:\n");
|
|
log_netobj(&(arg->alock.oh));
|
|
syslog(LOG_DEBUG, "SVID: %d\n", arg->alock.svid);
|
|
syslog(LOG_DEBUG, "Lock Offset: %llu\n",
|
|
(unsigned long long)arg->alock.l_offset);
|
|
syslog(LOG_DEBUG, "Lock Length: %llu\n",
|
|
(unsigned long long)arg->alock.l_len);
|
|
syslog(LOG_DEBUG, "Exclusive: %s\n",
|
|
(arg->exclusive ? "true" : "false"));
|
|
}
|
|
|
|
holder = testlock(&arg->alock, arg->exclusive, LOCK_V4);
|
|
|
|
/*
|
|
* Copy the cookie from the argument into the result. Note that this
|
|
* is slightly hazardous, as the structure contains a pointer to a
|
|
* malloc()ed buffer that will get freed by the caller. However, the
|
|
* main function transmits the result before freeing the argument
|
|
* so it is in fact safe.
|
|
*/
|
|
res.cookie = arg->cookie;
|
|
if (holder == NULL) {
|
|
res.stat.stat = nlm4_granted;
|
|
} else {
|
|
res.stat.stat = nlm4_denied;
|
|
memcpy(&res.stat.nlm4_testrply_u.holder, holder,
|
|
sizeof(struct nlm4_holder));
|
|
}
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm4_test_msg_4_svc(nlm4_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
nlm4_testres res;
|
|
static char dummy;
|
|
struct sockaddr *addr;
|
|
CLIENT *cli;
|
|
int success;
|
|
struct timeval timeo;
|
|
struct nlm4_holder *holder;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_test_msg", rqstp);
|
|
|
|
holder = testlock(&arg->alock, arg->exclusive, LOCK_V4);
|
|
|
|
res.cookie = arg->cookie;
|
|
if (holder == NULL) {
|
|
res.stat.stat = nlm4_granted;
|
|
} else {
|
|
res.stat.stat = nlm4_denied;
|
|
memcpy(&res.stat.nlm4_testrply_u.holder, holder,
|
|
sizeof(struct nlm4_holder));
|
|
}
|
|
|
|
/*
|
|
* nlm_test has different result type to the other operations, so
|
|
* can't use transmit4_result() in this case
|
|
*/
|
|
addr = svc_getrpccaller(rqstp->rq_xprt)->buf;
|
|
if ((cli = get_client(addr, NLM_VERS4)) != NULL) {
|
|
timeo.tv_sec = 0; /* No timeout - not expecting response */
|
|
timeo.tv_usec = 0;
|
|
|
|
success = clnt_call(cli, NLM4_TEST_RES,
|
|
(xdrproc_t)xdr_nlm4_testres, &res,
|
|
(xdrproc_t)xdr_void, &dummy, timeo);
|
|
|
|
if (debug_level > 2)
|
|
syslog(LOG_DEBUG, "clnt_call returns %d", success);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_lock ---------------------------------------------------------------- */
|
|
/*
|
|
* Purposes: Establish a lock
|
|
* Returns: granted, denied or blocked
|
|
* Notes: *** grace period support missing
|
|
*/
|
|
nlm4_res *
|
|
nlm4_lock_4_svc(nlm4_lockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_lock", rqstp);
|
|
if (debug_level > 5) {
|
|
syslog(LOG_DEBUG, "Locking arguments:\n");
|
|
log_netobj(&(arg->cookie));
|
|
syslog(LOG_DEBUG, "Alock arguments:\n");
|
|
syslog(LOG_DEBUG, "Caller Name: %s\n",arg->alock.caller_name);
|
|
syslog(LOG_DEBUG, "File Handle:\n");
|
|
log_netobj(&(arg->alock.fh));
|
|
syslog(LOG_DEBUG, "Owner Handle:\n");
|
|
log_netobj(&(arg->alock.oh));
|
|
syslog(LOG_DEBUG, "SVID: %d\n", arg->alock.svid);
|
|
syslog(LOG_DEBUG, "Lock Offset: %llu\n",
|
|
(unsigned long long)arg->alock.l_offset);
|
|
syslog(LOG_DEBUG, "Lock Length: %llu\n",
|
|
(unsigned long long)arg->alock.l_len);
|
|
syslog(LOG_DEBUG, "Block: %s\n", (arg->block ? "true" : "false"));
|
|
syslog(LOG_DEBUG, "Exclusive: %s\n", (arg->exclusive ? "true" : "false"));
|
|
syslog(LOG_DEBUG, "Reclaim: %s\n", (arg->reclaim ? "true" : "false"));
|
|
syslog(LOG_DEBUG, "State num: %d\n", arg->state);
|
|
}
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_4() */
|
|
res.cookie = arg->cookie;
|
|
|
|
res.stat.stat = getlock(arg, rqstp, LOCK_MON | LOCK_V4);
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm4_lock_msg_4_svc(nlm4_lockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_lock_msg", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat.stat = getlock(arg, rqstp, LOCK_MON | LOCK_ASYNC | LOCK_V4);
|
|
transmit4_result(NLM4_LOCK_RES, &res, getrpcaddr(rqstp));
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_cancel -------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Cancel a blocked lock request
|
|
* Returns: granted or denied
|
|
* Notes:
|
|
*/
|
|
nlm4_res *
|
|
nlm4_cancel_4_svc(nlm4_cancargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_cancel", rqstp);
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_1() */
|
|
res.cookie = arg->cookie;
|
|
|
|
/*
|
|
* Since at present we never return 'nlm_blocked', there can never be
|
|
* a lock to cancel, so this call always fails.
|
|
*/
|
|
res.stat.stat = unlock(&arg->alock, LOCK_CANCEL);
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm4_cancel_msg_4_svc(nlm4_cancargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_cancel_msg", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
/*
|
|
* Since at present we never return 'nlm_blocked', there can never be
|
|
* a lock to cancel, so this call always fails.
|
|
*/
|
|
res.stat.stat = unlock(&arg->alock, LOCK_CANCEL | LOCK_V4);
|
|
transmit4_result(NLM4_CANCEL_RES, &res, getrpcaddr(rqstp));
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_unlock -------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Release an existing lock
|
|
* Returns: Always granted, unless during grace period
|
|
* Notes: "no such lock" error condition is ignored, as the
|
|
* protocol uses unreliable UDP datagrams, and may well
|
|
* re-try an unlock that has already succeeded.
|
|
*/
|
|
nlm4_res *
|
|
nlm4_unlock_4_svc(nlm4_unlockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_unlock", rqstp);
|
|
|
|
res.stat.stat = unlock(&arg->alock, LOCK_V4);
|
|
res.cookie = arg->cookie;
|
|
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm4_unlock_msg_4_svc(nlm4_unlockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_unlock_msg", rqstp);
|
|
|
|
res.stat.stat = unlock(&arg->alock, LOCK_V4);
|
|
res.cookie = arg->cookie;
|
|
|
|
transmit4_result(NLM4_UNLOCK_RES, &res, getrpcaddr(rqstp));
|
|
return (NULL);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/*
|
|
* Client-side pseudo-RPCs for results. Note that for the client there
|
|
* are only nlm_xxx_msg() versions of each call, since the 'real RPC'
|
|
* version returns the results in the RPC result, and so the client
|
|
* does not normally receive incoming RPCs.
|
|
*
|
|
* The exception to this is nlm_granted(), which is genuinely an RPC
|
|
* call from the server to the client - a 'call-back' in normal procedure
|
|
* call terms.
|
|
*/
|
|
|
|
/* nlm_granted ------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Receive notification that formerly blocked lock now granted
|
|
* Returns: always success ('granted')
|
|
* Notes:
|
|
*/
|
|
nlm4_res *
|
|
nlm4_granted_4_svc(nlm4_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_granted", rqstp);
|
|
|
|
res.stat.stat = lock_answer(arg->alock.svid, &arg->cookie,
|
|
nlm4_granted, NULL, NLM_VERS4) == 0 ?
|
|
nlm4_granted : nlm4_denied;
|
|
|
|
/* copy cookie from arg to result. See comment in nlm_test_1() */
|
|
res.cookie = arg->cookie;
|
|
|
|
return (&res);
|
|
}
|
|
|
|
void *
|
|
nlm4_granted_msg_4_svc(nlm4_testargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_granted_msg", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat.stat = lock_answer(arg->alock.svid, &arg->cookie,
|
|
nlm4_granted, NULL, NLM_VERS4) == 0 ?
|
|
nlm4_granted : nlm4_denied;
|
|
transmit4_result(NLM4_GRANTED_RES, &res, getrpcaddr(rqstp));
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_test_res ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_test_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm4_test_res_4_svc(nlm4_testres *arg, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm4_test_res", rqstp);
|
|
|
|
(void)lock_answer(-1, &arg->cookie, arg->stat.stat,
|
|
(int *)&arg->stat.nlm4_testrply_u.holder.svid,
|
|
NLM_VERS4);
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_lock_res ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_lock_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm4_lock_res_4_svc(nlm4_res *arg, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm4_lock_res", rqstp);
|
|
|
|
(void)lock_answer(-1, &arg->cookie, arg->stat.stat, NULL, NLM_VERS4);
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_cancel_res ---------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_cancel_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm4_cancel_res_4_svc(nlm4_res *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm4_cancel_res", rqstp);
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_unlock_res ---------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_unlock_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm4_unlock_res_4_svc(nlm4_res *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm4_unlock_res", rqstp);
|
|
return (NULL);
|
|
}
|
|
|
|
/* nlm_granted_res --------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Accept result from earlier nlm_granted_msg() call
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm4_granted_res_4_svc(nlm4_res *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
if (debug_level)
|
|
log_from_addr("nlm4_granted_res", rqstp);
|
|
return (NULL);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/*
|
|
* Calls for PCNFS locking (aka non-monitored locking, no involvement
|
|
* of rpc.statd).
|
|
*
|
|
* These are all genuine RPCs - no nlm_xxx_msg() nonsense here.
|
|
*/
|
|
|
|
/* nlm_share --------------------------------------------------------------- */
|
|
/*
|
|
* Purpose: Establish a DOS-style lock
|
|
* Returns: success or failure
|
|
* Notes: Blocking locks are not supported - client is expected
|
|
* to retry if required.
|
|
*/
|
|
nlm4_shareres *
|
|
nlm4_share_4_svc(nlm4_shareargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_shareres res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_share", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat = nlm4_granted;
|
|
res.sequence = 1234356; /* X/Open says this field is ignored? */
|
|
return (&res);
|
|
}
|
|
|
|
/* nlm4_unshare ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Release a DOS-style lock
|
|
* Returns: nlm_granted, unless in grace period
|
|
* Notes:
|
|
*/
|
|
nlm4_shareres *
|
|
nlm4_unshare_4_svc(nlm4_shareargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_shareres res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm_unshare", rqstp);
|
|
|
|
res.cookie = arg->cookie;
|
|
res.stat = nlm4_granted;
|
|
res.sequence = 1234356; /* X/Open says this field is ignored? */
|
|
return (&res);
|
|
}
|
|
|
|
/* nlm4_nm_lock ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: non-monitored version of nlm4_lock()
|
|
* Returns: as for nlm4_lock()
|
|
* Notes: These locks are in the same style as the standard nlm4_lock,
|
|
* but the rpc.statd should not be called to establish a
|
|
* monitor for the client machine, since that machine is
|
|
* declared not to be running a rpc.statd, and so would not
|
|
* respond to the statd protocol.
|
|
*/
|
|
nlm4_res *
|
|
nlm4_nm_lock_4_svc(nlm4_lockargs *arg, struct svc_req *rqstp)
|
|
{
|
|
static nlm4_res res;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_nm_lock", rqstp);
|
|
|
|
/* copy cookie from arg to result. See comment in nlm4_test_1() */
|
|
res.cookie = arg->cookie;
|
|
res.stat.stat = nlm4_granted;
|
|
return (&res);
|
|
}
|
|
|
|
/* nlm4_free_all ------------------------------------------------------------ */
|
|
/*
|
|
* Purpose: Release all locks held by a named client
|
|
* Returns: Nothing
|
|
* Notes: Potential denial of service security problem here - the
|
|
* locks to be released are specified by a host name, independent
|
|
* of the address from which the request has arrived.
|
|
* Should probably be rejected if the named host has been
|
|
* using monitored locks.
|
|
*/
|
|
void *
|
|
nlm4_free_all_4_svc(struct nlm4_notify *arg __unused, struct svc_req *rqstp)
|
|
{
|
|
static char dummy;
|
|
|
|
if (debug_level)
|
|
log_from_addr("nlm4_free_all", rqstp);
|
|
return (&dummy);
|
|
}
|
|
|
|
/* nlm_sm_notify --------------------------------------------------------- */
|
|
/*
|
|
* Purpose: called by rpc.statd when a monitored host state changes.
|
|
* Returns: Nothing
|
|
*/
|
|
void *
|
|
nlm_sm_notify_0_svc(struct nlm_sm_status *arg, struct svc_req *rqstp __unused)
|
|
{
|
|
static char dummy;
|
|
notify(arg->mon_name, arg->state);
|
|
return (&dummy);
|
|
}
|