OpenSolaris_b135/lib/libnsl/rpc/clnt_generic.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley
* 4.3 BSD under license from the Regents of the University of
* California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "mt.h"
#include "rpc_mt.h"
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <rpc/rpc.h>
#include <rpc/nettype.h>
#include <netdir.h>
#include <string.h>
#include <syslog.h>
extern int __td_setnodelay(int);
extern bool_t __rpc_is_local_host(const char *);
extern bool_t __rpc_try_doors(const char *, bool_t *);
extern CLIENT *_clnt_vc_create_timed(int, struct netbuf *, rpcprog_t,
rpcvers_t, uint_t, uint_t, const struct timeval *);
CLIENT *_clnt_tli_create_timed(int, const struct netconfig *, struct netbuf *,
rpcprog_t, rpcvers_t, uint_t, uint_t, const struct timeval *);
#ifndef NETIDLEN
#define NETIDLEN 32
#endif
/*
* Generic client creation with version checking the value of
* vers_out is set to the highest server supported value
* vers_low <= vers_out <= vers_high AND an error results
* if this can not be done.
*
* It calls clnt_create_vers_timed() with a NULL value for the timeout
* pointer, which indicates that the default timeout should be used.
*/
CLIENT *
clnt_create_vers(const char *hostname, const rpcprog_t prog,
rpcvers_t *vers_out, const rpcvers_t vers_low,
const rpcvers_t vers_high, const char *nettype)
{
return (clnt_create_vers_timed(hostname, prog, vers_out, vers_low,
vers_high, nettype, NULL));
}
/*
* This routine has the same definition as clnt_create_vers(),
* except it takes an additional timeout parameter - a pointer to
* a timeval structure. A NULL value for the pointer indicates
* that the default timeout value should be used.
*/
CLIENT *
clnt_create_vers_timed(const char *hostname, const rpcprog_t prog,
rpcvers_t *vers_out, const rpcvers_t vers_low, const rpcvers_t vers_high,
const char *nettype, const struct timeval *tp)
{
CLIENT *clnt;
struct timeval to;
enum clnt_stat rpc_stat;
struct rpc_err rpcerr;
rpcvers_t v_low, v_high;
clnt = clnt_create_timed(hostname, prog, vers_high, nettype, tp);
if (clnt == NULL)
return (NULL);
if (tp == NULL) {
to.tv_sec = 10;
to.tv_usec = 0;
} else
to = *tp;
rpc_stat = clnt_call(clnt, NULLPROC, (xdrproc_t)xdr_void,
NULL, (xdrproc_t)xdr_void, NULL, to);
if (rpc_stat == RPC_SUCCESS) {
*vers_out = vers_high;
return (clnt);
}
v_low = vers_low;
v_high = vers_high;
while (rpc_stat == RPC_PROGVERSMISMATCH && v_high > v_low) {
unsigned int minvers, maxvers;
clnt_geterr(clnt, &rpcerr);
minvers = rpcerr.re_vers.low;
maxvers = rpcerr.re_vers.high;
if (maxvers < v_high)
v_high = maxvers;
else
v_high--;
if (minvers > v_low)
v_low = minvers;
if (v_low > v_high) {
goto error;
}
CLNT_CONTROL(clnt, CLSET_VERS, (char *)&v_high);
rpc_stat = clnt_call(clnt, NULLPROC, (xdrproc_t)xdr_void,
NULL, (xdrproc_t)xdr_void,
NULL, to);
if (rpc_stat == RPC_SUCCESS) {
*vers_out = v_high;
return (clnt);
}
}
clnt_geterr(clnt, &rpcerr);
error:
rpc_createerr.cf_stat = rpc_stat;
rpc_createerr.cf_error = rpcerr;
clnt_destroy(clnt);
return (NULL);
}
/*
* Top level client creation routine.
* Generic client creation: takes (servers name, program-number, nettype) and
* returns client handle. Default options are set, which the user can
* change using the rpc equivalent of ioctl()'s.
*
* It tries for all the netids in that particular class of netid until
* it succeeds.
* XXX The error message in the case of failure will be the one
* pertaining to the last create error.
*
* It calls clnt_create_timed() with the default timeout.
*/
CLIENT *
clnt_create(const char *hostname, const rpcprog_t prog, const rpcvers_t vers,
const char *nettype)
{
return (clnt_create_timed(hostname, prog, vers, nettype, NULL));
}
/*
* This the routine has the same definition as clnt_create(),
* except it takes an additional timeout parameter - a pointer to
* a timeval structure. A NULL value for the pointer indicates
* that the default timeout value should be used.
*
* This function calls clnt_tp_create_timed().
*/
CLIENT *
clnt_create_timed(const char *hostname, const rpcprog_t prog,
const rpcvers_t vers, const char *netclass, const struct timeval *tp)
{
struct netconfig *nconf;
CLIENT *clnt = NULL;
void *handle;
enum clnt_stat save_cf_stat = RPC_SUCCESS;
struct rpc_err save_cf_error;
char nettype_array[NETIDLEN];
char *nettype = &nettype_array[0];
bool_t try_others;
if (netclass == NULL)
nettype = NULL;
else {
size_t len = strlen(netclass);
if (len >= sizeof (nettype_array)) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return (NULL);
}
(void) strcpy(nettype, netclass);
}
/*
* Check to see if a rendezvous over doors should be attempted.
*/
if (__rpc_try_doors(nettype, &try_others)) {
/*
* Make sure this is the local host.
*/
if (__rpc_is_local_host(hostname)) {
if ((clnt = clnt_door_create(prog, vers, 0)) != NULL)
return (clnt);
else {
if (rpc_createerr.cf_stat == RPC_SYSTEMERROR)
return (NULL);
save_cf_stat = rpc_createerr.cf_stat;
save_cf_error = rpc_createerr.cf_error;
}
} else {
save_cf_stat = rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
}
}
if (!try_others)
return (NULL);
if ((handle = __rpc_setconf((char *)nettype)) == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return (NULL);
}
rpc_createerr.cf_stat = RPC_SUCCESS;
while (clnt == NULL) {
if ((nconf = __rpc_getconf(handle)) == NULL) {
if (rpc_createerr.cf_stat == RPC_SUCCESS)
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
break;
}
clnt = clnt_tp_create_timed(hostname, prog, vers, nconf, tp);
if (clnt)
break;
else {
/*
* Since we didn't get a name-to-address
* translation failure here, we remember
* this particular error. The object of
* this is to enable us to return to the
* caller a more-specific error than the
* unhelpful ``Name to address translation
* failed'' which might well occur if we
* merely returned the last error (because
* the local loopbacks are typically the
* last ones in /etc/netconfig and the most
* likely to be unable to translate a host
* name). We also check for a more
* meaningful error than ``unknown host
* name'' for the same reasons.
*/
if (rpc_createerr.cf_stat == RPC_SYSTEMERROR) {
syslog(LOG_ERR, "clnt_create_timed: "
"RPC_SYSTEMERROR.");
break;
}
if (rpc_createerr.cf_stat != RPC_N2AXLATEFAILURE &&
rpc_createerr.cf_stat != RPC_UNKNOWNHOST) {
save_cf_stat = rpc_createerr.cf_stat;
save_cf_error = rpc_createerr.cf_error;
}
}
}
/*
* Attempt to return an error more specific than ``Name to address
* translation failed'' or ``unknown host name''
*/
if ((rpc_createerr.cf_stat == RPC_N2AXLATEFAILURE ||
rpc_createerr.cf_stat == RPC_UNKNOWNHOST) &&
(save_cf_stat != RPC_SUCCESS)) {
rpc_createerr.cf_stat = save_cf_stat;
rpc_createerr.cf_error = save_cf_error;
}
__rpc_endconf(handle);
return (clnt);
}
/*
* Create a client handle for a well known service or a specific port on
* host. This routine bypasses rpcbind and can be use to construct a client
* handle to services that are not registered with rpcbind or where the remote
* rpcbind is not available, e.g., the remote rpcbind port is blocked by a
* firewall. We construct a client handle and then ping the service's NULL
* proc to see that the service is really available. If the caller supplies
* a non zero port number, the service name is ignored and the port will be
* used. A non-zero port number limits the protocol family to inet or inet6.
*/
CLIENT *
clnt_create_service_timed(const char *host, const char *service,
const rpcprog_t prog, const rpcvers_t vers,
const ushort_t port, const char *netclass,
const struct timeval *tmout)
{
int fd;
void *handle;
CLIENT *clnt = NULL;
struct netconfig *nconf;
struct nd_hostserv hs;
struct nd_addrlist *raddrs;
struct t_bind *tbind = NULL;
struct timeval to;
char nettype_array[NETIDLEN];
char *nettype = &nettype_array[0];
char *hostname, *serv;
bool_t try_others;
/*
* handle const of netclass
*/
if (netclass == NULL)
nettype = NULL;
else {
size_t len = strlen(netclass);
if (len >= sizeof (nettype_array)) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return (NULL);
}
(void) strcpy(nettype, netclass);
}
if (tmout == NULL) {
to.tv_sec = 10;
to.tv_usec = 0;
} else
to = *tmout;
if ((handle = __rpc_setconf(nettype)) == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return (NULL);
}
/*
* Sinct host, and service are const
*/
if (host == NULL || (hostname = strdup(host)) == NULL) {
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = (host ? errno : EINVAL);
rpc_createerr.cf_error.re_terrno = 0;
return (NULL);
}
if (service == NULL)
serv = NULL;
else if ((serv = strdup(service ? service : "")) == NULL) {
free(hostname);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = 0;
return (NULL);
}
hs.h_host = hostname;
hs.h_serv = port ? NULL : serv;
/*
* Check to see if a rendezvous over doors should be attempted.
*/
if (__rpc_try_doors(nettype, &try_others)) {
/*
* Make sure this is the local host.
*/
if (__rpc_is_local_host(hostname)) {
if ((clnt = clnt_door_create(prog, vers, 0)) != NULL)
goto done;
else if (rpc_createerr.cf_stat == RPC_SYSTEMERROR)
goto done;
} else {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
}
}
if (!try_others)
goto done;
rpc_createerr.cf_stat = RPC_SUCCESS;
while (clnt == NULL) {
tbind = NULL;
if ((nconf = __rpc_getconf(handle)) == NULL) {
if (rpc_createerr.cf_stat == RPC_SUCCESS)
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
break;
}
if (port) {
if (strcmp(nconf->nc_protofmly, NC_INET) != 0 &&
strcmp(nconf->nc_protofmly, NC_INET6) != 0)
continue;
}
if ((fd = t_open(nconf->nc_device, O_RDWR, NULL)) < 0) {
rpc_createerr.cf_stat = RPC_TLIERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = t_errno;
continue;
}
RPC_RAISEFD(fd);
__rpc_set_mac_options(fd, nconf, prog);
/* LINTED pointer cast */
if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR))
== NULL) {
(void) t_close(fd);
rpc_createerr.cf_stat = RPC_TLIERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = t_errno;
continue;
}
if (netdir_getbyname(nconf, &hs, &raddrs) != ND_OK) {
if (rpc_createerr.cf_stat == RPC_SUCCESS)
rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
if (tbind)
(void) t_free((char *)tbind, T_BIND);
(void) t_close(fd);
continue;
}
(void) memcpy(tbind->addr.buf, raddrs->n_addrs->buf,
raddrs->n_addrs->len);
tbind->addr.len = raddrs->n_addrs->len;
netdir_free((void *)raddrs, ND_ADDRLIST);
if (port) {
if (strcmp(nconf->nc_protofmly, NC_INET) == NULL)
/* LINTED pointer alignment */
((struct sockaddr_in *)
tbind->addr.buf)->sin_port = htons(port);
else if (strcmp(nconf->nc_protofmly, NC_INET6) == NULL)
/* LINTED pointer alignment */
((struct sockaddr_in6 *)
tbind->addr.buf)->sin6_port = htons(port);
}
clnt = _clnt_tli_create_timed(fd, nconf, &tbind->addr,
prog, vers, 0, 0, &to);
if (clnt == NULL) {
if (tbind)
(void) t_free((char *)tbind, T_BIND);
(void) t_close(fd);
continue;
}
(void) CLNT_CONTROL(clnt, CLSET_FD_CLOSE, NULL);
/*
* Check if we can reach the server with this clnt handle
* Other clnt_create calls do a ping by contacting the
* remote rpcbind, here will just try to execute the service's
* NULL proc.
*/
rpc_createerr.cf_stat = clnt_call(clnt, NULLPROC,
xdr_void, 0, xdr_void, 0, to);
rpc_createerr.cf_error.re_errno = rpc_callerr.re_status;
rpc_createerr.cf_error.re_terrno = 0;
if (rpc_createerr.cf_stat != RPC_SUCCESS) {
clnt_destroy(clnt);
clnt = NULL;
if (tbind)
(void) t_free((char *)tbind, T_BIND);
continue;
} else
break;
}
__rpc_endconf(handle);
if (tbind)
(void) t_free((char *)tbind, T_BIND);
done:
if (hostname)
free(hostname);
if (serv)
free(serv);
return (clnt);
}
/*
* Generic client creation: takes (servers name, program-number, netconf) and
* returns client handle. Default options are set, which the user can
* change using the rpc equivalent of ioctl()'s : clnt_control()
* It finds out the server address from rpcbind and calls clnt_tli_create().
*
* It calls clnt_tp_create_timed() with the default timeout.
*/
CLIENT *
clnt_tp_create(const char *hostname, const rpcprog_t prog, const rpcvers_t vers,
const struct netconfig *nconf)
{
return (clnt_tp_create_timed(hostname, prog, vers, nconf, NULL));
}
/*
* This has the same definition as clnt_tp_create(), except it
* takes an additional parameter - a pointer to a timeval structure.
* A NULL value for the timeout pointer indicates that the default
* value for the timeout should be used.
*/
CLIENT *
clnt_tp_create_timed(const char *hostname, const rpcprog_t prog,
const rpcvers_t vers, const struct netconfig *nconf,
const struct timeval *tp)
{
struct netbuf *svcaddr; /* servers address */
CLIENT *cl = NULL; /* client handle */
extern struct netbuf *__rpcb_findaddr_timed(rpcprog_t, rpcvers_t,
struct netconfig *, char *, CLIENT **, struct timeval *);
if (nconf == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return (NULL);
}
/*
* Get the address of the server
*/
if ((svcaddr = __rpcb_findaddr_timed(prog, vers,
(struct netconfig *)nconf, (char *)hostname,
&cl, (struct timeval *)tp)) == NULL) {
/* appropriate error number is set by rpcbind libraries */
return (NULL);
}
if (cl == NULL) {
cl = _clnt_tli_create_timed(RPC_ANYFD, nconf, svcaddr,
prog, vers, 0, 0, tp);
} else {
/* Reuse the CLIENT handle and change the appropriate fields */
if (CLNT_CONTROL(cl, CLSET_SVC_ADDR, (void *)svcaddr) == TRUE) {
if (cl->cl_netid == NULL) {
cl->cl_netid = strdup(nconf->nc_netid);
if (cl->cl_netid == NULL) {
netdir_free((char *)svcaddr, ND_ADDR);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
syslog(LOG_ERR,
"clnt_tp_create_timed: "
"strdup failed.");
return (NULL);
}
}
if (cl->cl_tp == NULL) {
cl->cl_tp = strdup(nconf->nc_device);
if (cl->cl_tp == NULL) {
netdir_free((char *)svcaddr, ND_ADDR);
if (cl->cl_netid)
free(cl->cl_netid);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
syslog(LOG_ERR,
"clnt_tp_create_timed: "
"strdup failed.");
return (NULL);
}
}
(void) CLNT_CONTROL(cl, CLSET_PROG, (void *)&prog);
(void) CLNT_CONTROL(cl, CLSET_VERS, (void *)&vers);
} else {
CLNT_DESTROY(cl);
cl = _clnt_tli_create_timed(RPC_ANYFD, nconf, svcaddr,
prog, vers, 0, 0, tp);
}
}
netdir_free((char *)svcaddr, ND_ADDR);
return (cl);
}
/*
* Generic client creation: returns client handle.
* Default options are set, which the user can
* change using the rpc equivalent of ioctl()'s : clnt_control().
* If fd is RPC_ANYFD, it will be opened using nconf.
* It will be bound if not so.
* If sizes are 0; appropriate defaults will be chosen.
*/
CLIENT *
clnt_tli_create(const int fd, const struct netconfig *nconf,
struct netbuf *svcaddr, const rpcprog_t prog, const rpcvers_t vers,
const uint_t sendsz, const uint_t recvsz)
{
return (_clnt_tli_create_timed(fd, nconf, svcaddr, prog, vers, sendsz,
recvsz, NULL));
}
/*
* This has the same definition as clnt_tli_create(), except it
* takes an additional parameter - a pointer to a timeval structure.
*
* Not a public interface. This is for clnt_create_timed,
* clnt_create_vers_times, clnt_tp_create_timed to pass down the
* timeout value to COTS creation routine.
* (for bug 4049792: clnt_create_timed does not time out)
*/
CLIENT *
_clnt_tli_create_timed(int fd, const struct netconfig *nconf,
struct netbuf *svcaddr, rpcprog_t prog, rpcvers_t vers, uint_t sendsz,
uint_t recvsz, const struct timeval *tp)
{
CLIENT *cl; /* client handle */
struct t_info tinfo; /* transport info */
bool_t madefd; /* whether fd opened here */
t_scalar_t servtype;
int retval;
if (fd == RPC_ANYFD) {
if (nconf == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return (NULL);
}
fd = t_open(nconf->nc_device, O_RDWR, NULL);
if (fd == -1)
goto err;
RPC_RAISEFD(fd);
madefd = TRUE;
__rpc_set_mac_options(fd, nconf, prog);
if (t_bind(fd, NULL, NULL) == -1)
goto err;
switch (nconf->nc_semantics) {
case NC_TPI_CLTS:
servtype = T_CLTS;
break;
case NC_TPI_COTS:
servtype = T_COTS;
break;
case NC_TPI_COTS_ORD:
servtype = T_COTS_ORD;
break;
default:
if (t_getinfo(fd, &tinfo) == -1)
goto err;
servtype = tinfo.servtype;
break;
}
} else {
int state; /* Current state of provider */
/*
* Sync the opened fd.
* Check whether bound or not, else bind it
*/
if (((state = t_sync(fd)) == -1) ||
((state == T_UNBND) && (t_bind(fd, NULL, NULL) == -1)) ||
(t_getinfo(fd, &tinfo) == -1))
goto err;
servtype = tinfo.servtype;
madefd = FALSE;
}
switch (servtype) {
case T_COTS:
cl = _clnt_vc_create_timed(fd, svcaddr, prog, vers, sendsz,
recvsz, tp);
break;
case T_COTS_ORD:
if (nconf && ((strcmp(nconf->nc_protofmly, NC_INET) == 0) ||
(strcmp(nconf->nc_protofmly, NC_INET6) == 0))) {
retval = __td_setnodelay(fd);
if (retval == -1)
goto err;
}
cl = _clnt_vc_create_timed(fd, svcaddr, prog, vers, sendsz,
recvsz, tp);
break;
case T_CLTS:
cl = clnt_dg_create(fd, svcaddr, prog, vers, sendsz, recvsz);
break;
default:
goto err;
}
if (cl == NULL)
goto err1; /* borrow errors from clnt_dg/vc creates */
if (nconf) {
cl->cl_netid = strdup(nconf->nc_netid);
if (cl->cl_netid == NULL) {
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = 0;
syslog(LOG_ERR,
"clnt_tli_create: strdup failed");
goto err1;
}
cl->cl_tp = strdup(nconf->nc_device);
if (cl->cl_tp == NULL) {
if (cl->cl_netid)
free(cl->cl_netid);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = 0;
syslog(LOG_ERR,
"clnt_tli_create: strdup failed");
goto err1;
}
} else {
struct netconfig *nc;
if ((nc = __rpcfd_to_nconf(fd, servtype)) != NULL) {
if (nc->nc_netid) {
cl->cl_netid = strdup(nc->nc_netid);
if (cl->cl_netid == NULL) {
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = 0;
syslog(LOG_ERR,
"clnt_tli_create: "
"strdup failed");
goto err1;
}
}
if (nc->nc_device) {
cl->cl_tp = strdup(nc->nc_device);
if (cl->cl_tp == NULL) {
if (cl->cl_netid)
free(cl->cl_netid);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = 0;
syslog(LOG_ERR,
"clnt_tli_create: "
"strdup failed");
goto err1;
}
}
freenetconfigent(nc);
}
if (cl->cl_netid == NULL)
cl->cl_netid = "";
if (cl->cl_tp == NULL)
cl->cl_tp = "";
}
if (madefd) {
(void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL);
/* (void) CLNT_CONTROL(cl, CLSET_POP_TIMOD, NULL); */
};
return (cl);
err:
rpc_createerr.cf_stat = RPC_TLIERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = t_errno;
err1: if (madefd)
(void) t_close(fd);
return (NULL);
}
/*
* To avoid conflicts with the "magic" file descriptors (0, 1, and 2),
* we try to not use them. The __rpc_raise_fd() routine will dup
* a descriptor to a higher value. If we fail to do it, we continue
* to use the old one (and hope for the best).
*/
int
__rpc_raise_fd(int fd)
{
int nfd;
if ((nfd = fcntl(fd, F_DUPFD, RPC_MINFD)) == -1)
return (fd);
if (t_sync(nfd) == -1) {
(void) close(nfd);
return (fd);
}
if (t_close(fd) == -1) {
/* this is okay, we will syslog an error, then use the new fd */
(void) syslog(LOG_ERR,
"could not t_close() fd %d; mem & fd leak", fd);
}
return (nfd);
}