-/* @(#)clnt_udp.c 2.2 88/08/01 4.0 RPCSRC */
/*
- * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
- * unrestricted use provided that this legend is included on all tape
- * media and as a part of the software program in whole or part. Users
- * may copy or modify Sun RPC without charge, but are not authorized
- * to license or distribute it to anyone else except as part of a product or
- * program developed by the user.
- *
- * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
- * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun RPC is provided with no support and without any obligation on the
- * part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
+ * clnt_udp.c, Implements a UDP/IP based, client side RPC.
*
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
- * OR ANY PART THEREOF.
+ * Copyright (c) 2010, Oracle America, Inc.
*
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
*
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-#if !defined(lint) && defined(SCCSIDS)
-static char sccsid[] = "@(#)clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro";
-#endif
-
-/*
- * clnt_udp.c, Implements a UDP/IP based, client side RPC.
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of the "Oracle America, Inc." nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
*
- * Copyright (C) 1984, Sun Microsystems, Inc.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDER 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 <stdio.h>
#include <sys/ioctl.h>
#include <netdb.h>
#include <errno.h>
+#include <stdint.h>
#include <rpc/pmap_clnt.h>
#include <net/if.h>
-#ifdef USE_IN_LIBIO
-# include <wchar.h>
-#endif
+#include <ifaddrs.h>
+#include <wchar.h>
+#include <fcntl.h>
#ifdef IP_RECVERR
#include <errqueue.h>
#include <sys/uio.h>
#endif
-extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *);
+#include <kernel-features.h>
+#include <inet/net-internal.h>
+#include <shlib-compat.h>
+
extern u_long _create_xid (void);
/*
static bool_t clntudp_control (CLIENT *, int, char *);
static void clntudp_destroy (CLIENT *);
-static struct clnt_ops udp_ops =
+static const struct clnt_ops udp_ops =
{
clntudp_call,
clntudp_abort,
};
/*
- * Private data kept per client handle
+ * Private data kept per client handle. This private struct is
+ * unfortunately part of the ABI; ypbind contains a copy of it and
+ * accesses it through CLIENT::cl_private field.
*/
struct cu_data
{
* sent and received.
*/
CLIENT *
-clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
- struct timeval wait, int *sockp, u_int sendsz,
- u_int recvsz)
+__libc_clntudp_bufcreate (struct sockaddr_in *raddr, u_long program,
+ u_long version, struct timeval wait, int *sockp,
+ u_int sendsz, u_int recvsz, int flags)
{
CLIENT *cl;
struct cu_data *cu = NULL;
if (cl == NULL || cu == NULL)
{
struct rpc_createerr *ce = &get_rpc_createerr ();
-#ifdef USE_IN_LIBIO
- if (_IO_fwide (stderr, 0) > 0)
- (void) __fwprintf (stderr, L"%s",
- _("clntudp_create: out of memory\n"));
- else
-#endif
- (void) fputs (_("clntudp_create: out of memory\n"), stderr);
+ (void) __fxprintf (NULL, "%s: %s",
+ "clntudp_create", _("out of memory\n"));
ce->cf_stat = RPC_SYSTEMERROR;
ce->cf_error.re_errno = ENOMEM;
goto fooy;
}
raddr->sin_port = htons (port);
}
- cl->cl_ops = &udp_ops;
+ cl->cl_ops = (struct clnt_ops *) &udp_ops;
cl->cl_private = (caddr_t) cu;
cu->cu_raddr = *raddr;
cu->cu_rlen = sizeof (cu->cu_raddr);
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
call_msg.rm_call.cb_prog = program;
call_msg.rm_call.cb_vers = version;
- INTUSE(xdrmem_create) (&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE);
- if (!INTUSE(xdr_callhdr) (&(cu->cu_outxdrs), &call_msg))
+ xdrmem_create (&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE);
+ if (!xdr_callhdr (&(cu->cu_outxdrs), &call_msg))
{
goto fooy;
}
cu->cu_xdrpos = XDR_GETPOS (&(cu->cu_outxdrs));
if (*sockp < 0)
{
- int dontblock = 1;
-
- *sockp = __socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
- if (*sockp < 0)
+ *sockp = __socket (AF_INET, SOCK_DGRAM|SOCK_NONBLOCK|flags, IPPROTO_UDP);
+ if (__glibc_unlikely (*sockp < 0))
{
struct rpc_createerr *ce = &get_rpc_createerr ();
ce->cf_stat = RPC_SYSTEMERROR;
goto fooy;
}
/* attempt to bind to prov port */
- (void) INTUSE(bindresvport) (*sockp, (struct sockaddr_in *) 0);
- /* the sockets rpc controls are non-blocking */
- (void) __ioctl (*sockp, FIONBIO, (char *) &dontblock);
+ (void) bindresvport (*sockp, (struct sockaddr_in *) 0);
#ifdef IP_RECVERR
{
int on = 1;
cu->cu_closeit = FALSE;
}
cu->cu_sock = *sockp;
- cl->cl_auth = INTUSE(authnone_create) ();
+ cl->cl_auth = authnone_create ();
return cl;
fooy:
if (cu)
mem_free ((caddr_t) cl, sizeof (CLIENT));
return (CLIENT *) NULL;
}
-INTDEF (clntudp_bufcreate)
+#ifdef EXPORT_RPC_SYMBOLS
+libc_hidden_def (__libc_clntudp_bufcreate)
+#else
+libc_hidden_nolink_sunrpc (__libc_clntudp_bufcreate, GLIBC_PRIVATE)
+#endif
CLIENT *
-clntudp_create (raddr, program, version, wait, sockp)
- struct sockaddr_in *raddr;
- u_long program;
- u_long version;
- struct timeval wait;
- int *sockp;
+clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
+ struct timeval wait, int *sockp, u_int sendsz,
+ u_int recvsz)
{
- return INTUSE(clntudp_bufcreate) (raddr, program, version, wait, sockp,
- UDPMSGSIZE, UDPMSGSIZE);
+ return __libc_clntudp_bufcreate (raddr, program, version, wait,
+ sockp, sendsz, recvsz, 0);
}
-INTDEF (clntudp_create)
+libc_hidden_nolink_sunrpc (clntudp_bufcreate, GLIBC_2_0)
+
+CLIENT *
+clntudp_create (struct sockaddr_in *raddr, u_long program, u_long version,
+ struct timeval wait, int *sockp)
+{
+ return __libc_clntudp_bufcreate (raddr, program, version, wait,
+ sockp, UDPMSGSIZE, UDPMSGSIZE, 0);
+}
+#ifdef EXPORT_RPC_SYMBOLS
+libc_hidden_def (clntudp_create)
+#else
+libc_hidden_nolink_sunrpc (clntudp_create, GLIBC_2_0)
+#endif
static int
is_network_up (int sock)
{
- struct ifconf ifc;
- char buf[UDPMSGSIZE];
- struct ifreq ifreq, *ifr;
- int n;
-
- ifc.ifc_len = sizeof (buf);
- ifc.ifc_buf = buf;
- if (__ioctl(sock, SIOCGIFCONF, (char *) &ifc) == 0)
+ struct ifaddrs *ifa;
+
+ if (getifaddrs (&ifa) != 0)
+ return 0;
+
+ struct ifaddrs *run = ifa;
+ while (run != NULL)
{
- ifr = ifc.ifc_req;
- for (n = ifc.ifc_len / sizeof (struct ifreq); n > 0; n--, ifr++)
- {
- ifreq = *ifr;
- if (__ioctl (sock, SIOCGIFFLAGS, (char *) &ifreq) < 0)
- break;
+ if ((run->ifa_flags & IFF_UP) != 0
+ && run->ifa_addr != NULL
+ && run->ifa_addr->sa_family == AF_INET)
+ break;
- if ((ifreq.ifr_flags & IFF_UP)
- && ifr->ifr_addr.sa_family == AF_INET)
- return 1;
- }
+ run = run->ifa_next;
}
- return 0;
+
+ freeifaddrs (ifa);
+
+ return run != NULL;
}
static enum clnt_stat
-clntudp_call (cl, proc, xargs, argsp, xresults, resultsp, utimeout)
- CLIENT *cl; /* client handle */
- u_long proc; /* procedure number */
- xdrproc_t xargs; /* xdr routine for args */
- caddr_t argsp; /* pointer to args */
- xdrproc_t xresults; /* xdr routine for results */
- caddr_t resultsp; /* pointer to results */
- struct timeval utimeout; /* seconds to wait before giving up */
+clntudp_call (/* client handle */
+ CLIENT *cl,
+ /* procedure number */
+ u_long proc,
+ /* xdr routine for args */
+ xdrproc_t xargs,
+ /* pointer to args */
+ caddr_t argsp,
+ /* xdr routine for results */
+ xdrproc_t xresults,
+ /* pointer to results */
+ caddr_t resultsp,
+ /* seconds to wait before giving up */
+ struct timeval utimeout)
{
struct cu_data *cu = (struct cu_data *) cl->cl_private;
XDR *xdrs;
int inlen;
socklen_t fromlen;
struct pollfd fd;
- int milliseconds = (cu->cu_wait.tv_sec * 1000) +
- (cu->cu_wait.tv_usec / 1000);
struct sockaddr_in from;
struct rpc_msg reply_msg;
XDR reply_xdrs;
- struct timeval time_waited;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
- struct timeval timeout;
int anyup; /* any network interface up */
- if (cu->cu_total.tv_usec == -1)
- {
- timeout = utimeout; /* use supplied timeout */
- }
- else
+ struct deadline_current_time current_time = __deadline_current_time ();
+ struct deadline total_deadline; /* Determined once by overall timeout. */
+ struct deadline response_deadline; /* Determined anew for each query. */
+
+ /* Choose the timeout value. For non-sending usage (xargs == NULL),
+ the total deadline does not matter, only cu->cu_wait is used
+ below. */
+ if (xargs != NULL)
{
- timeout = cu->cu_total; /* use default timeout */
+ struct timeval tv;
+ if (cu->cu_total.tv_usec == -1)
+ /* Use supplied timeout. */
+ tv = utimeout;
+ else
+ /* Use default timeout. */
+ tv = cu->cu_total;
+ if (!__is_timeval_valid_timeout (tv))
+ return (cu->cu_error.re_status = RPC_TIMEDOUT);
+ total_deadline = __deadline_from_timeval (current_time, tv);
}
- time_waited.tv_sec = 0;
- time_waited.tv_usec = 0;
+ /* Guard against bad timeout specification. */
+ if (!__is_timeval_valid_timeout (cu->cu_wait))
+ return (cu->cu_error.re_status = RPC_TIMEDOUT);
+
call_again:
xdrs = &(cu->cu_outxdrs);
if (xargs == NULL)
return (cu->cu_error.re_status = RPC_CANTSEND);
}
- /*
- * Hack to provide rpc-based message passing
- */
- if (timeout.tv_sec == 0 && timeout.tv_usec == 0)
- {
- return (cu->cu_error.re_status = RPC_TIMEDOUT);
- }
+ /* sendto may have blocked, so recompute the current time. */
+ current_time = __deadline_current_time ();
get_reply:
- /*
- * sub-optimal code appears here because we have
- * some clock time to spare while the packets are in flight.
- * (We assume that this is actually only executed once.)
- */
+ response_deadline = __deadline_from_timeval (current_time, cu->cu_wait);
+
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
fd.fd = cu->cu_sock;
fd.events = POLLIN;
anyup = 0;
+
+ /* Per-response retry loop. current_time must be up-to-date at the
+ top of the loop. */
for (;;)
{
+ int milliseconds;
+ if (xargs != NULL)
+ {
+ if (__deadline_elapsed (current_time, total_deadline))
+ /* Overall timeout expired. */
+ return (cu->cu_error.re_status = RPC_TIMEDOUT);
+ milliseconds = __deadline_to_ms
+ (current_time, __deadline_first (total_deadline,
+ response_deadline));
+ if (milliseconds == 0)
+ /* Per-query timeout expired. */
+ goto send_again;
+ }
+ else
+ {
+ /* xatgs == NULL. Collect a response without sending a
+ query. In this mode, we need to ignore the total
+ deadline. */
+ milliseconds = __deadline_to_ms (current_time, response_deadline);
+ if (milliseconds == 0)
+ /* Cannot send again, so bail out. */
+ return (cu->cu_error.re_status = RPC_CANTSEND);
+ }
+
switch (__poll (&fd, 1, milliseconds))
{
if (!anyup)
return (cu->cu_error.re_status = RPC_CANTRECV);
}
-
- time_waited.tv_sec += cu->cu_wait.tv_sec;
- time_waited.tv_usec += cu->cu_wait.tv_usec;
- while (time_waited.tv_usec >= 1000000)
- {
- time_waited.tv_sec++;
- time_waited.tv_usec -= 1000000;
- }
- if ((time_waited.tv_sec < timeout.tv_sec) ||
- ((time_waited.tv_sec == timeout.tv_sec) &&
- (time_waited.tv_usec < timeout.tv_usec)))
- goto send_again;
- return (cu->cu_error.re_status = RPC_TIMEDOUT);
-
- /*
- * buggy in other cases because time_waited is not being
- * updated.
- */
+ goto next_response;
case -1:
if (errno == EINTR)
- continue;
+ goto next_response;
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
struct sock_extended_err *e;
struct sockaddr_in err_addr;
struct iovec iov;
- char *cbuf = (char *) alloca (outlen + 256);
+ char *cbuf = malloc (outlen + 256);
int ret;
+ if (cbuf == NULL)
+ {
+ cu->cu_error.re_errno = errno;
+ return (cu->cu_error.re_status = RPC_CANTRECV);
+ }
+
iov.iov_base = cbuf + 256;
iov.iov_len = outlen;
msg.msg_name = (void *) &err_addr;
{
e = (struct sock_extended_err *) CMSG_DATA(cmsg);
cu->cu_error.re_errno = e->ee_errno;
+ free (cbuf);
return (cu->cu_error.re_status = RPC_CANTRECV);
}
+ free (cbuf);
}
#endif
do
{
fromlen = sizeof (struct sockaddr);
inlen = __recvfrom (cu->cu_sock, cu->cu_inbuf,
- (int) cu->cu_recvsz, 0,
+ (int) cu->cu_recvsz, MSG_DONTWAIT,
(struct sockaddr *) &from, &fromlen);
}
while (inlen < 0 && errno == EINTR);
if (inlen < 0)
{
if (errno == EWOULDBLOCK)
- continue;
+ goto next_response;
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
- if (inlen < 4)
- continue;
-
- /* see if reply transaction id matches sent id.
- Don't do this if we only wait for a replay */
- if (xargs != NULL
- && (*((u_int32_t *) (cu->cu_inbuf))
- != *((u_int32_t *) (cu->cu_outbuf))))
- continue;
- /* we now assume we have the proper reply */
- break;
+ /* Accept the response if the packet is sufficiently long and
+ the transaction ID matches the query (if available). */
+ if (inlen >= 4
+ && (xargs == NULL
+ || memcmp (cu->cu_inbuf, cu->cu_outbuf,
+ sizeof (uint32_t)) == 0))
+ break;
+
+ next_response:
+ /* Update the current time because poll and recvmsg waited for
+ an unknown time. */
+ current_time = __deadline_current_time ();
}
/*
* now decode and validate the response
*/
- INTUSE(xdrmem_create) (&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE);
- ok = INTUSE(xdr_replymsg) (&reply_xdrs, &reply_msg);
+ xdrmem_create (&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE);
+ ok = xdr_replymsg (&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok)
{
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
{
xdrs->x_op = XDR_FREE;
- (void) INTUSE(xdr_opaque_auth) (xdrs,
- &(reply_msg.acpted_rply.ar_verf));
+ (void) xdr_opaque_auth (xdrs, &(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else
clntudp_control (CLIENT *cl, int request, char *info)
{
struct cu_data *cu = (struct cu_data *) cl->cl_private;
+ u_long ul;
+ uint32_t ui32;
switch (request)
{
* first element in the call structure *.
* This will get the xid of the PREVIOUS call
*/
- *(u_long *)info = ntohl(*(u_long *)cu->cu_outbuf);
+ memcpy (&ui32, cu->cu_outbuf, sizeof (ui32));
+ ul = ntohl (ui32);
+ memcpy (info, &ul, sizeof (ul));
break;
case CLSET_XID:
/* This will set the xid of the NEXT call */
- *(u_long *)cu->cu_outbuf = htonl(*(u_long *)info - 1);
+ memcpy (&ul, info, sizeof (ul));
+ ui32 = htonl (ul - 1);
+ memcpy (cu->cu_outbuf, &ui32, sizeof (ui32));
/* decrement by 1 as clntudp_call() increments once */
+ break;
case CLGET_VERS:
/*
* This RELIES on the information that, in the call body,
* the version number field is the fifth field from the
- * begining of the RPC header. MUST be changed if the
+ * beginning of the RPC header. MUST be changed if the
* call_struct is changed
*/
- *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf +
- 4 * BYTES_PER_XDR_UNIT));
+ memcpy (&ui32, cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT, sizeof (ui32));
+ ul = ntohl (ui32);
+ memcpy (info, &ul, sizeof (ul));
break;
case CLSET_VERS:
- *(u_long *)(cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT)
- = htonl(*(u_long *)info);
+ memcpy (&ul, info, sizeof (ul));
+ ui32 = htonl (ul);
+ memcpy (cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32));
break;
case CLGET_PROG:
/*
* This RELIES on the information that, in the call body,
* the program number field is the field from the
- * begining of the RPC header. MUST be changed if the
+ * beginning of the RPC header. MUST be changed if the
* call_struct is changed
*/
- *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf +
- 3 * BYTES_PER_XDR_UNIT));
+ memcpy (&ui32, cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT, sizeof (ui32));
+ ul = ntohl (ui32);
+ memcpy (info, &ul, sizeof (ul));
break;
case CLSET_PROG:
- *(u_long *)(cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT)
- = htonl(*(u_long *)info);
+ memcpy (&ul, info, sizeof (ul));
+ ui32 = htonl (ul);
+ memcpy (cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32));
break;
/* The following are only possible with TI-RPC */
case CLGET_SVC_ADDR:
projects / thirdparty / glibc.git / blobdiff