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xsrc/xfree/xc/lib/dps/csconndi.c
Lionel Sambuc 055d5fa67c xsrc as of '2013/12/1 12:00:00 UTC'
2014-11-06 13:19:51 +01:00

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/*
* csconndi.c -- low level connection maker for CSDPS
*
* (c) Copyright 1990-1994 Adobe Systems Incorporated.
* All rights reserved.
*
* Permission to use, copy, modify, distribute, and sublicense this software
* and its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notices appear in all copies and that
* both those copyright notices and this permission notice appear in
* supporting documentation and that the name of Adobe Systems Incorporated
* not be used in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. No trademark license
* to use the Adobe trademarks is hereby granted. If the Adobe trademark
* "Display PostScript"(tm) is used to describe this software, its
* functionality or for any other purpose, such use shall be limited to a
* statement that this software works in conjunction with the Display
* PostScript system. Proper trademark attribution to reflect Adobe's
* ownership of the trademark shall be given whenever any such reference to
* the Display PostScript system is made.
*
* ADOBE MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THE SOFTWARE FOR
* ANY PURPOSE. IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
* ADOBE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON- INFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL ADOBE BE LIABLE
* TO YOU OR ANY OTHER PARTY FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE, STRICT LIABILITY OR ANY OTHER ACTION ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ADOBE WILL NOT
* PROVIDE ANY TRAINING OR OTHER SUPPORT FOR THE SOFTWARE.
*
* Adobe, PostScript, and Display PostScript are trademarks of Adobe Systems
* Incorporated which may be registered in certain jurisdictions
*
* Portions Copyright 1989 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. M.I.T. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* Author: Adobe Systems Incorporated and MIT X Consortium
*/
/* $XFree86: xc/lib/dps/csconndi.c,v 1.13 2004/07/25 20:17:02 dawes Exp $ */
#if defined(sun) && !defined(SVR4)
#define memmove(t,f,c) bcopy(f,t,c)
#endif
#define NEED_EVENTS
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xos.h>
/* Include this first so that Xasync.h, included from Xlibint.h, can find
the definition of NOFILE */
#include <sys/param.h>
#include <X11/Xlibint.h>
#include "Xlibnet.h" /* New for R5, delete for R4 */
#include <arpa/inet.h>
#ifndef hpux /* HP doesn't include Xauth.h :-( */
#include <X11/Xauth.h>
#else
#define FamilyLocal (256)
#endif
#include <ctype.h>
#ifdef DNETCONN
#include <netdnet/dn.h>
#include <netdnet/dnetdb.h>
#endif
#include <netdb.h>
#include "DPSCAPproto.h"
#include "cslibint.h"
#include "dpsassert.h"
#if defined(hpux) || defined(AIXV3)
#define SELECT_TYPE int *
#else
#define SELECT_TYPE fd_set *
#endif
#ifndef _XANYSET
#define _XANYSET N_XANYSET
#endif /* _XANYSET */
#ifndef X_CONNECTION_RETRIES /* number retries on ECONNREFUSED */
#define X_CONNECTION_RETRIES 5
#endif
#define CONN_PARAMS char *, int , int , int *, int *, char **
#ifdef DNETCONN
static int MakeDECnetConnection(CONN_PARAMS);
#endif
#ifdef UNIXCONN
static int MakeUNIXSocketConnection(CONN_PARAMS);
#endif
#ifdef TCPCONN
static int MakeTCPConnection(CONN_PARAMS);
#endif
#ifdef STREAMSCONN
extern int _XMakeStreamsConnection(CONN_PARAMS);
#endif
/* This global controls the size of the output socket buffer. Zero
means to use the system default size. */
int gNXSndBufSize = 0;
static char *copystring (char *src, int len)
{
char *dst = Xmalloc (len + 1);
if (dst) {
strncpy (dst, src, len);
dst[len] = '\0';
}
return dst;
}
/*
* Attempts to connect to agent, given name. Returns file descriptor
* (network socket) or -1 if connection fails. Names may be of the
* following format:
*
* [hostname] : [:] agentnumber
*
* The second colon indicates a DECnet style name. No hostname is interpretted
* as the most efficient local connection to a server on the same machine.
* This is usually:
*
* o shared memory
* o local stream
* o UNIX domain socket
* o TCP to local host
*/
int
DPSCAPConnect(
char *display_name,
char **fullnamep, /* RETURN */
int *dpynump, /* RETURN */
int *familyp, /* RETURN */
int *saddrlenp, /* RETURN */
char **saddrp) /* RETURN, freed by caller */
{
char *lastp, *p; /* char pointers */
char *phostname = NULL; /* start of host of display */
char *pdpynum = NULL; /* start of dpynum of display */
char *pscrnum = NULL; /* start of screen of display */
Bool dnet = False; /* if true, then DECnet format */
int iagent; /* required display number */
int (*connfunc)(CONN_PARAMS); /* method to create connection */
int fd = -1; /* file descriptor to return */
int len; /* length tmp variable */
p = display_name;
*saddrlenp = 0; /* set so that we can clear later */
*saddrp = NULL;
/*
* Step 1, find the hostname. This is delimited by the required
* first colon.
*/
for (lastp = p; *p && *p != ':'; p++) ;
if (!*p) return -1; /* must have a colon */
if (p != lastp) { /* no hostname given */
phostname = copystring (lastp, p - lastp);
if (!phostname) goto bad; /* no memory */
}
/*
* Step 2, see if this is a DECnet address by looking for the optional
* second colon.
*/
if (p[1] == ':') { /* then DECnet format */
dnet = True;
p++;
}
/*
* see if we're allowed to have a DECnet address
*/
#ifndef DNETCONN
if (dnet) goto bad;
#endif
/*
* Step 3, find the port number. This field is required.
* Zero is acceptable as a port number, meaning use the default.
*/
for (lastp = ++p; *p && isascii(*p) && isdigit(*p); p++) ;
if ((p == lastp) || /* required field */
(*p != '\0' && *p != '.') || /* invalid non-digit terminator */
!(pdpynum = copystring (lastp, p - lastp))) /* no memory */
goto bad;
iagent = atoi (pdpynum);
/*
* At this point, we know the following information:
*
* phostname hostname string or NULL
* iagent agent port number
* dnet DECnet boolean
*
* We can now decide which transport to use based on the ConnectionFlags
* build parameter the hostname string. If phostname is NULL or equals
* the string "local", then choose the best transport. If phostname
* is "unix", then choose BSD UNIX domain sockets (if configured).
*
* First, choose default transports: DECnet else (TCP or STREAMS)
*/
#ifdef DNETCONN
if (dnet)
connfunc = MakeDECnetConnection;
else
#endif
#ifdef TCPCONN
connfunc = MakeTCPConnection;
#else
#ifdef STREAMSCONN
connfunc = _XMakeStreamsConnection;
#else
connfunc = NULL;
#endif
#endif
#ifdef UNIXCONN
/*
* Now that the defaults have been established, see if we have any
* special names that we have to override:
*
* :N => if UNIXCONN then unix-domain-socket
* ::N => if UNIXCONN then unix-domain-socket
* unix:N => if UNIXCONN then unix-domain-socket
*
* Note that if UNIXCONN isn't defined, then we can use the default
* transport connection function set above.
*/
if (!phostname) {
connfunc = MakeUNIXSocketConnection;
}
else if (strcmp (phostname, "unix") == 0) {
connfunc = MakeUNIXSocketConnection;
}
#endif
if (!connfunc)
goto bad;
#ifdef UNIXCONN
#define LOCALCONNECTION (!phostname || connfunc == MakeUNIXSocketConnection)
#else
#define LOCALCONNECTION (!phostname)
#endif
if (LOCALCONNECTION) {
/*
* Get the auth info for local hosts so that it doesn't have to be
* repeated everywhere; the particular values in these fields are
* not part of the protocol.
*/
char hostnamebuf[256];
int len = N_XGetHostname (hostnamebuf, sizeof hostnamebuf);
*familyp = FamilyLocal;
if (len > 0) {
*saddrp = Xmalloc (len + 1);
if (*saddrp) {
strcpy (*saddrp, hostnamebuf);
*saddrlenp = len;
} else {
*saddrlenp = 0;
}
}
}
#undef LOCALCONNECTION
#ifndef ultrix
/* Ultrix has a nasty bug in getservbyname(); if the name passed to
it is not in the services list it seg faults! *sigh* So, we
don't ever look in the services info for ultrix... */
if (iagent == 0) { /* find service default, if one's defined */
struct servent *serventInfo;
if ((serventInfo = getservbyname(DPS_NX_SERV_NAME,
(char *) NULL)) != NULL) {
if (strcmp("tcp", serventInfo->s_proto) != 0) {
DPSWarnProc(NULL, "Services database specifies a protocol other than tcp. Using default port.\n");
} else /* extract the port number */
iagent = ntohs(serventInfo->s_port);
}
}
#endif /* ultrix */
/*
* Make the connection, also need to get the auth address info for
* non-local connections. Do retries in case server host has hit its
* backlog (which, unfortunately, isn't distinguishable from there not
* being a server listening at all, which is why we have to not retry
* too many times).
*/
if ((fd = (*connfunc) (phostname, iagent, X_CONNECTION_RETRIES,
familyp, saddrlenp, saddrp)) < 0)
goto bad;
/*
* Set the connection non-blocking since we use select() to block; also
* set close-on-exec so that programs that fork() doesn't get confused.
*/
#ifdef FIOSNBIO
{
int arg = 1;
ioctl (fd, FIOSNBIO, &arg);
}
#else
#if defined(O_NONBLOCK)
(void) fcntl (fd, F_SETFL, O_NONBLOCK);
#elif defined(FNDELAY)
(void) fcntl (fd, F_SETFL, FNDELAY);
#else
(void) fcntl (fd, F_SETFL, O_NDELAY);
#endif /* O_NONBLOCK/FNDELAY */
#endif /* FIOSNBIO */
(void) fcntl (fd, F_SETFD, 1);
/*
* Build the expanded display name:
*
* [host] : [:] agent \0
*/
len = ((phostname ? strlen(phostname) : 0) + 1 + (dnet ? 1 : 0) +
strlen(pdpynum) + 1);
*fullnamep = (char *) Xmalloc (len);
if (!*fullnamep) goto bad;
sprintf (*fullnamep, "%s%s%d",
(phostname ? phostname : ""), (dnet ? "::" : ":"),
iagent);
*dpynump = iagent;
if (phostname) Xfree (phostname);
if (pdpynum) Xfree (pdpynum);
if (pscrnum) Xfree (pscrnum);
return fd;
/*
* error return; make sure everything is cleaned up.
*/
bad:
if (fd >= 0) (void) close (fd);
if (*saddrp) {
Xfree (*saddrp);
*saddrp = NULL;
}
*saddrlenp = 0;
if (phostname) Xfree (phostname);
if (pdpynum) Xfree (pdpynum);
return -1;
}
/*****************************************************************************
* *
* Make Connection Routines *
* *
*****************************************************************************/
#ifdef DNETCONN /* stupid makedepend */
#define NEED_BSDISH
#endif
#ifdef UNIXCONN
#define NEED_BSDISH
#endif
#ifdef TCPCONN
#define NEED_BSDISH
#endif
#ifdef NEED_BSDISH /* makedepend can't handle #if */
/*
* 4.2bsd-based systems
*/
#include <sys/socket.h>
#ifndef hpux
#ifdef apollo /* nest if(n)defs because makedepend is broken */
#ifndef NO_TCP_H
#include <netinet/tcp.h>
#endif /* NO_TCP_H */
#else /* apollo */
#include <netinet/tcp.h>
#endif /* apollo */
#endif
#endif /* NEED_BSDISH */
#ifdef DNETCONN
static int MakeDECnetConnection (phostname, iagent, retries,
familyp, saddrlenp, saddrp)
char *phostname;
int iagent;
int retries;
int *familyp; /* RETURN */
int *saddrlenp; /* RETURN */
char **saddrp; /* RETURN */
{
int fd;
char objname[20];
extern int dnet_conn();
struct dn_naddr *dnaddrp, dnaddr;
struct nodeent *np;
if (!phostname) phostname = "0";
/*
* build the target object name.
*/
sprintf (objname, "DPS$EXECUTIVE_%d", iagent);
/*
* Attempt to open the DECnet connection, return -1 if fails; ought to
* do some retries here....
*/
if ((fd = dnet_conn (phostname, objname, SOCK_STREAM, 0, 0, 0, 0)) < 0) {
return -1;
}
*familyp = FamilyDECnet;
if (dnaddrp = dnet_addr (phostname)) { /* stolen from xhost */
dnaddr = *dnaddrp;
} else {
if ((np = getnodebyname (phostname)) == NULL) {
(void) close (fd);
return -1;
}
dnaddr.a_len = np->n_length;
memmove(dnaddr.a_addr, np->n_addr, np->n_length);
}
*saddrlenp = sizeof (struct dn_naddr);
*saddrp = Xmalloc (*saddrlenp);
if (!*saddrp) {
(void) close (fd);
return -1;
}
memmove (*saddrp, (char *)&dnaddr, *saddrlenp);
return fd;
}
#endif /* DNETCONN */
#ifdef UNIXCONN
#ifndef X_NO_SYS_UN
#include <sys/un.h>
#endif
#ifndef CSDPS_UNIX_PATH
#ifdef hpux
#define CSDPS_UNIX_DIR "/usr/spool/sockets/DPSNX"
#define CSDPS_UNIX_PATH "/usr/spool/sockets/DPSNX/"
#else
#define CSDPS_UNIX_DIR "/tmp/.DPSNX-unix"
#define CSDPS_UNIX_PATH "/tmp/.DPSNX-unix/AGENT"
#endif
#endif
static int MakeUNIXSocketConnection (
char *phostname,
int iagent,
int retries,
int *familyp, /* RETURN */
int *saddrlenp, /* RETURN */
char **saddrp) /* RETURN */
{
struct sockaddr_un unaddr; /* UNIX socket data block */
struct sockaddr *addr; /* generic socket pointer */
int addrlen; /* length of addr */
int fd; /* socket file descriptor */
int port = (iagent == 0) ? CSDPSPORT : iagent;
unaddr.sun_family = AF_UNIX;
sprintf (unaddr.sun_path, "%s_%d", CSDPS_UNIX_PATH, port);
addr = (struct sockaddr *) &unaddr;
addrlen = strlen(unaddr.sun_path) + sizeof(unaddr.sun_family);
/*
* Open the network connection.
*/
do {
if ((fd = socket ((int) addr->sa_family, SOCK_STREAM, 0)) < 0) {
return -1;
}
if (gNXSndBufSize > 0)
setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char *) &gNXSndBufSize, sizeof(gNXSndBufSize));
if (connect (fd, addr, addrlen) < 0) {
int olderrno = errno;
(void) close (fd);
if (olderrno != ENOENT || retries <= 0) {
errno = olderrno;
return -1;
}
sleep (1);
} else {
break;
}
} while (retries-- > 0);
/*
* Don't need to get auth info since we're local
*/
return fd;
}
#endif /* UNIXCONN */
#ifdef TCPCONN
static int MakeTCPConnection (
char *phostname,
int iagent,
int retries,
int *familyp, /* RETURN */
int *saddrlenp, /* RETURN */
char **saddrp) /* RETURN */
{
char hostnamebuf[256]; /* tmp space */
unsigned long hostinetaddr; /* result of inet_addr of arpa addr */
struct sockaddr_in inaddr; /* IP socket */
struct sockaddr *addr; /* generic socket pointer */
int addrlen; /* length of addr */
struct hostent *hp; /* entry in hosts table */
char *cp; /* character pointer iterator */
int fd; /* file descriptor to return */
int len; /* length tmp variable */
#define INVALID_INETADDR ((unsigned long) -1)
if (!phostname) {
hostnamebuf[0] = '\0';
(void) N_XGetHostname (hostnamebuf, sizeof hostnamebuf);
phostname = hostnamebuf;
}
/*
* if numeric host name then try to parse it as such; do the number
* first because some systems return garbage instead of INVALID_INETADDR
*/
if (isascii(phostname[0]) && isdigit(phostname[0])) {
hostinetaddr = inet_addr (phostname);
} else {
hostinetaddr = INVALID_INETADDR;
}
/*
* try numeric
*/
if (hostinetaddr == INVALID_INETADDR) {
if ((hp = gethostbyname(phostname)) == NULL) {
/* No such host! */
return -1;
}
if (hp->h_addrtype != AF_INET) { /* is IP host? */
/* Not an Internet host! */
return -1;
}
/* Set up the socket data. */
inaddr.sin_family = hp->h_addrtype;
#if defined(CRAY) && defined(OLDTCP)
/* Only Cray UNICOS3 and UNICOS4 will define this */
{
long t;
memmove ((char *)&t, (char *)hp->h_addr, sizeof(t));
inaddr.sin_addr = t;
}
#else
memmove ((char *)&inaddr.sin_addr, (char *)hp->h_addr,
sizeof(inaddr.sin_addr));
#endif /* CRAY and OLDTCP */
} else {
#if defined(CRAY) && defined(OLDTCP)
/* Only Cray UNICOS3 and UNICOS4 will define this */
inaddr.sin_addr = hostinetaddr;
#else
inaddr.sin_addr.s_addr = hostinetaddr;
#endif /* CRAY and OLDTCP */
inaddr.sin_family = AF_INET;
}
addr = (struct sockaddr *) &inaddr;
addrlen = sizeof (struct sockaddr_in);
inaddr.sin_port = (iagent == 0) ? CSDPSPORT : iagent;
inaddr.sin_port = htons (inaddr.sin_port); /* may be funky macro */
/*
* Open the network connection.
*/
do {
if ((fd = socket ((int) addr->sa_family, SOCK_STREAM, 0)) < 0) {
return -1;
}
/*
* turn off TCP coalescence
*/
#ifdef TCP_NODELAY
{
int tmp = 1;
setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, (char *)&tmp, sizeof (int));
}
#endif
if (gNXSndBufSize > 0)
len = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char *) &gNXSndBufSize, sizeof(gNXSndBufSize));
/*
* connect to the socket; if there is no X server or if the backlog has
* been reached, then ECONNREFUSED will be returned.
*/
if (connect (fd, addr, addrlen) < 0) {
int olderrno = errno;
(void) close (fd);
if (olderrno != ECONNREFUSED || retries <= 0) {
errno = olderrno;
return -1;
}
sleep (1);
} else {
break;
}
} while (retries-- > 0);
/*
* Success! So, save the auth information
*/
#ifdef CRAY
#ifdef OLDTCP
len = sizeof(inaddr.sin_addr);
#else
len = SIZEOF_in_addr;
#endif /* OLDTCP */
cp = (char *) &inaddr.sin_addr;
#else /* else not CRAY */
len = sizeof(inaddr.sin_addr.s_addr);
cp = (char *) &inaddr.sin_addr.s_addr;
#endif /* CRAY */
/*
* We are special casing the BSD hack localhost address
* 127.0.0.1, since this address shouldn't be copied to
* other machines. So, we simply omit generating the auth info
* since we set it to the local machine before calling this routine!
*/
if (!((len == 4) && (cp[0] == 127) && (cp[1] == 0) &&
(cp[2] == 0) && (cp[3] == 1))) {
*saddrp = Xmalloc (len);
if (*saddrp) {
*saddrlenp = len;
memmove (*saddrp, cp, len);
*familyp = FamilyInternet;
} else {
*saddrlenp = 0;
}
}
return fd;
}
#undef INVALID_INETADDR
#endif /* TCPCONN */
/*****************************************************************************
* *
* Connection Utility Routines *
* *
*****************************************************************************/
/*
* Disconnect from server.
*/
int N_XDisconnectDisplay (int server)
{
(void) close(server);
return 0;
}
#include <stddef.h>
/*
* This is an OS dependent routine which:
* 1) returns as soon as the connection can be written on....
* 2) if the connection can be read, must enqueue events and handle errors,
* until the connection is writable.
*/
void N_XWaitForWritable(Display *dpy)
{
unsigned long r_mask[MSKCNT];
unsigned long w_mask[MSKCNT];
int nfound;
CLEARBITS(r_mask);
CLEARBITS(w_mask);
while (1) {
BITSET(r_mask, dpy->fd);
BITSET(w_mask, dpy->fd);
do {
nfound = select (dpy->fd + 1, (SELECT_TYPE) r_mask,
(SELECT_TYPE) w_mask, (SELECT_TYPE) NULL,
(struct timeval *) NULL);
if (nfound < 0 && errno != EINTR)
_XIOError(dpy);
} while (nfound <= 0);
if (_XANYSET(r_mask)) {
char buf[BUFSIZE];
int pend_not_register;
register int pend;
register xEvent *ev;
/* find out how much data can be read */
if (BytesReadable(dpy->fd, (char *) &pend_not_register) < 0)
_XIOError(dpy);
pend = pend_not_register;
/* must read at least one xEvent; if none is pending, then
we'll just block waiting for it */
if (pend < SIZEOF(xEvent)) pend = SIZEOF(xEvent);
/* but we won't read more than the max buffer size */
if (pend > BUFSIZE) pend = BUFSIZE;
/* round down to an integral number of XReps */
pend = (pend / SIZEOF(xEvent)) * SIZEOF(xEvent);
N_XRead (dpy, buf, pend);
/* no space between comma and type or else macro will die */
STARTITERATE (ev,xEvent, buf, (pend > 0),
(pend -= SIZEOF(xEvent))) {
if (ev->u.u.type == X_Error)
_XError (dpy, (xError *) ev);
else /* it's an event packet; die */
DPSFatalProc((DPSContext)0, "N_XWaitForWritable read bogus X event");
}
ENDITERATE
}
if (_XANYSET(w_mask))
return;
}
}
void N_XWaitForReadable(Display *dpy)
{
unsigned long r_mask[MSKCNT];
int result;
CLEARBITS(r_mask);
do {
BITSET(r_mask, dpy->fd);
result = select(dpy->fd + 1, (SELECT_TYPE) r_mask, (SELECT_TYPE) NULL,
(SELECT_TYPE) NULL, (struct timeval *) NULL);
if (result == -1 && errno != EINTR) _XIOError(dpy);
} while (result <= 0);
}
#ifdef XXX
static int padlength[4] = {0, 3, 2, 1}; /* make sure auth is multiple of 4 */
_XSendClientPrefix (
Display *dpy,
xConnClientPrefix *client, /* contains count for auth_* */
char *auth_proto, /* NOT null-terminated */
char char *auth_string) /* NOT null-terminated */
{
int auth_length = client->nbytesAuthProto;
int auth_strlen = client->nbytesAuthString;
char padbuf[3]; /* for padding to 4x bytes */
int pad;
struct iovec iovarray[5], *iov = iovarray;
int niov = 0;
#define add_to_iov(b,l) \
{ iov->iov_base = (b); iov->iov_len = (l); iov++, niov++; }
add_to_iov ((caddr_t) client, SIZEOF(xConnClientPrefix));
/*
* write authorization protocol name and data
*/
if (auth_length > 0) {
add_to_iov (auth_proto, auth_length);
pad = padlength [auth_length & 3];
if (pad) add_to_iov (padbuf, pad);
}
if (auth_strlen > 0) {
add_to_iov (auth_string, auth_strlen);
pad = padlength [auth_strlen & 3];
if (pad) add_to_iov (padbuf, pad);
}
#undef add_to_iov
(void) WritevToServer (dpy->fd, iovarray, niov);
return;
}
#endif /* XXX */
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