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-/* $Xorg: FSlibInt.c,v 1.5 2001/02/09 02:03:25 xorgcvs Exp $ */
-
-/*
- * Copyright 1990 Network Computing Devices;
- * Portions Copyright 1987 by Digital Equipment Corporation
- *
- * 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 names of Network Computing
- * Devices or Digital not be used in advertising or publicity pertaining
- * to distribution of the software without specific, written prior
- * permission. Network Computing Devices or Digital make no representations
- * about the suitability of this software for any purpose. It is provided
- * "as is" without express or implied warranty.
- *
- * NETWORK COMPUTING DEVICES AND DIGITAL DISCLAIM ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES
- * OR DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
- * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-/*
-
-Copyright 1987, 1994, 1998 The Open Group
-
-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.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-/* $XFree86: xc/lib/FS/FSlibInt.c,v 3.10tsi Exp $ */
-
-/*
- * FSlibInt.c - Internal support routines for the C subroutine
- * interface library (FSlib).
- */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include "FSlibint.h"
-#include <X11/Xos.h>
-
-static void _EatData32 ( FSServer *svr, unsigned long n );
-static char * _SysErrorMsg ( int n );
-
-/* check for both EAGAIN and EWOULDBLOCK, because some supposedly POSIX
- * systems are broken and return EWOULDBLOCK when they should return EAGAIN
- */
-#ifdef WIN32
-#define ETEST() (WSAGetLastError() == WSAEWOULDBLOCK)
-#else
-#if defined(EAGAIN) && defined(EWOULDBLOCK)
-#define ETEST() (errno == EAGAIN || errno == EWOULDBLOCK)
-#else
-#ifdef EAGAIN
-#define ETEST() (errno == EAGAIN)
-#else
-#define ETEST() (errno == EWOULDBLOCK)
-#endif
-#endif
-#endif
-#ifdef WIN32
-#define ECHECK(err) (WSAGetLastError() == err)
-#define ESET(val) WSASetLastError(val)
-#else
-#ifdef ISC
-#define ECHECK(err) ((errno == err) || ETEST())
-#else
-#define ECHECK(err) (errno == err)
-#endif
-#define ESET(val) errno = val
-#endif
-
-/*
- * The following routines are internal routines used by FSlib for protocol
- * packet transmission and reception.
- *
- * FSIOError(FSServer *) will be called if any sort of system call error occurs.
- * This is assumed to be a fatal condition, i.e., FSIOError should not return.
- *
- * FSError(FSServer *, FSErrorEvent *) will be called whenever an FS_Error event is
- * received. This is not assumed to be a fatal condition, i.e., it is
- * acceptable for this procedure to return. However, FSError should NOT
- * perform any operations (directly or indirectly) on the DISPLAY.
- *
- * Routines declared with a return type of 'Status' return 0 on failure,
- * and non 0 on success. Routines with no declared return type don't
- * return anything. Whenever possible routines that create objects return
- * the object they have created.
- */
-
-_FSQEvent *_FSqfree = NULL; /* NULL _FSQEvent. */
-
-static int padlength[4] = {0, 3, 2, 1};
-
- /*
- * lookup table for adding padding bytes to data that is read from or written
- * to the FS socket.
- */
-
-static fsReq _dummy_request = {
- 0, 0, 0
-};
-
-/*
- * _FSFlush - Flush the FS request buffer. If the buffer is empty, no
- * action is taken. This routine correctly handles incremental writes.
- * This routine may have to be reworked if int < long.
- */
-void
-_FSFlush(svr)
- register FSServer *svr;
-{
- register long size,
- todo;
- register int write_stat;
- register char *bufindex;
-
- size = todo = svr->bufptr - svr->buffer;
- bufindex = svr->bufptr = svr->buffer;
- /*
- * While write has not written the entire buffer, keep looping until the
- * entire buffer is written. bufindex will be incremented and size
- * decremented as buffer is written out.
- */
- while (size) {
- ESET(0);
- write_stat = _FSTransWrite(svr->trans_conn, bufindex, (int) todo);
- if (write_stat >= 0) {
- size -= write_stat;
- todo = size;
- bufindex += write_stat;
- } else if (ETEST()) {
- _FSWaitForWritable(svr);
-#ifdef SUNSYSV
- } else if (ECHECK(0)) {
- _FSWaitForWritable(svr);
-#endif
-
-#ifdef EMSGSIZE
- } else if (ECHECK(EMSGSIZE)) {
- if (todo > 1)
- todo >>= 1;
- else
- _FSWaitForWritable(svr);
-#endif
- } else {
- /* Write failed! */
- /* errno set by write system call. */
- (*_FSIOErrorFunction) (svr);
- }
- }
- svr->last_req = (char *) &_dummy_request;
-}
-
-int
-_FSEventsQueued(svr, mode)
- register FSServer *svr;
- int mode;
-{
- register BytesReadable_t len;
- BytesReadable_t pend;
- char buf[BUFSIZE];
- register fsReply *rep;
-
- if (mode == QueuedAfterFlush) {
- _FSFlush(svr);
- if (svr->qlen)
- return (svr->qlen);
- }
- if (_FSTransBytesReadable(svr->trans_conn, &pend) < 0)
- (*_FSIOErrorFunction) (svr);
- if ((len = pend) < SIZEOF(fsReply))
- return (svr->qlen); /* _FSFlush can enqueue events */
- else if (len > BUFSIZE)
- len = BUFSIZE;
- len /= SIZEOF(fsReply);
- pend = len * SIZEOF(fsReply);
- _FSRead(svr, buf, (long) pend);
-
- /* no space between comma and type or else macro will die */
- STARTITERATE(rep, fsReply, buf, (len > 0), len--) {
- if (rep->generic.type == FS_Error)
- _FSError(svr, (fsError *) rep);
- else /* must be an event packet */
- _FSEnq(svr, (fsEvent *) rep);
- }
- ENDITERATE
- return (svr->qlen);
-}
-
-/* _FSReadEvents - Flush the output queue,
- * then read as many events as possible (but at least 1) and enqueue them
- */
-void
-_FSReadEvents(svr)
- register FSServer *svr;
-{
- char buf[BUFSIZE];
- BytesReadable_t pend_not_register; /* because can't "&" a register
- * variable */
- register BytesReadable_t pend;
- register fsEvent *ev;
- Bool not_yet_flushed = True;
-
- do {
- /* find out how much data can be read */
- if (_FSTransBytesReadable(svr->trans_conn, &pend_not_register) < 0)
- (*_FSIOErrorFunction) (svr);
- pend = pend_not_register;
-
- /*
- * must read at least one fsEvent; if none is pending, then we'll just
- * flush and block waiting for it
- */
- if (pend < SIZEOF(fsEvent)) {
- pend = SIZEOF(fsEvent);
- /* don't flush until we block the first time */
- if (not_yet_flushed) {
- int qlen = svr->qlen;
-
- _FSFlush(svr);
- if (qlen != svr->qlen)
- return;
- not_yet_flushed = False;
- }
- }
- /* 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(fsEvent)) * SIZEOF(fsEvent);
-
- _FSRead(svr, buf, (long)pend);
-
- /* no space between comma and type or else macro will die */
- STARTITERATE(ev, fsEvent, buf, (pend > 0),
- pend -= SIZEOF(fsEvent)) {
- if (ev->type == FS_Error)
- _FSError(svr, (fsError *) ev);
- else /* it's an event packet; enqueue it */
- _FSEnq(svr, ev);
- }
- ENDITERATE
- } while (svr->head == NULL);
-}
-
-/*
- * _FSRead - Read bytes from the socket taking into account incomplete
- * reads. This routine may have to be reworked if int < long.
- */
-void
-_FSRead(svr, data, size)
- register FSServer *svr;
- register char *data;
- register long size;
-{
- register long bytes_read;
-#if defined(SVR4) && defined(i386)
- int num_failed_reads = 0;
-#endif
-
- if (size == 0)
- return;
- ESET(0);
- /*
- * For SVR4 with a unix-domain connection, ETEST() after selecting
- * readable means the server has died. To do this here, we look for
- * two consecutive reads returning ETEST().
- */
- while ((bytes_read = _FSTransRead(svr->trans_conn, data, (int) size))
- != size) {
-
- if (bytes_read > 0) {
- size -= bytes_read;
- data += bytes_read;
-#if defined(SVR4) && defined(i386)
- num_failed_reads = 0;
-#endif
- }
- else if (ETEST()) {
- _FSWaitForReadable(svr);
-#if defined(SVR4) && defined(i386)
- num_failed_reads++;
- if (num_failed_reads > 1) {
- ESET(EPIPE);
- (*_FSIOErrorFunction) (svr);
- }
-#endif
- ESET(0);
- }
-#ifdef SUNSYSV
- else if (ECHECK(0)) {
- _FSWaitForReadable(svr);
- }
-#endif
-
- else if (bytes_read == 0) {
- /* Read failed because of end of file! */
- ESET(EPIPE);
- (*_FSIOErrorFunction) (svr);
- } else { /* bytes_read is less than 0; presumably -1 */
- /* If it's a system call interrupt, it's not an error. */
- if (!ECHECK(EINTR))
- (*_FSIOErrorFunction) (svr);
-#if defined(SVR4) && defined(i386)
- else
- num_failed_reads = 0;
-#endif
- }
- }
-}
-
-#ifdef WORD64
-/*
- * XXX This is a *really* stupid way of doing this....
- */
-
-#define PACKBUFFERSIZE 4096
-
-
-/*
- * _FSRead32 - Read bytes from the socket unpacking each 32 bits
- * into a long (64 bits on a CRAY computer).
- *
- */
-static void
-_doFSRead32(svr, data, size, packbuffer)
- register FSServer *svr;
- register long *data;
- register long size;
- register char *packbuffer;
-{
- long *lpack,
- *lp;
- long mask32 = 0x00000000ffffffff;
- long maskw,
- nwords,
- i,
- bits;
-
- _FSReadPad(svr, packbuffer, size);
-
- lp = data;
- lpack = (long *) packbuffer;
- nwords = size >> 2;
- bits = 32;
-
- for (i = 0; i < nwords; i++) {
- maskw = mask32 << bits;
- *lp++ = (*lpack & maskw) >> bits;
- bits = bits ^ 32;
- if (bits) {
- lpack++;
- }
- }
-}
-
-void
-_FSRead32(svr, data, len)
- FSServer *svr;
- long *data;
- long len;
-{
- char packbuffer[PACKBUFFERSIZE];
- unsigned nwords = (PACKBUFFERSIZE >> 2); /* bytes to CARD32 */
-
- for (; len > nwords; len -= nwords, data += nwords) {
- _doFSRead32(svr, data, nwords, packbuffer);
- }
- _doFSRead32(svr, data, len, packbuffer);
-}
-
-
-
-/*
- * _FSRead16 - Read bytes from the socket unpacking each 16 bits
- * into a long (64 bits on a CRAY computer).
- *
- */
-static void
-_doFSRead16(svr, data, size, packbuffer)
- register FSServer *svr;
- register short *data;
- register long size;
- char *packbuffer;
-{
- long *lpack,
- *lp;
- long mask16 = 0x000000000000ffff;
- long maskw,
- nwords,
- i,
- bits;
-
- _FSRead(svr, packbuffer, size); /* don't do a padded read... */
-
- lp = (long *) data;
- lpack = (long *) packbuffer;
- nwords = size >> 1; /* number of 16 bit words to be unpacked */
- bits = 48;
- for (i = 0; i < nwords; i++) {
- maskw = mask16 << bits;
- *lp++ = (*lpack & maskw) >> bits;
- bits -= 16;
- if (bits < 0) {
- lpack++;
- bits = 48;
- }
- }
-}
-
-void
-_FSRead16(svr, data, len)
- FSServer *svr;
- short *data;
- long len;
-{
- char packbuffer[PACKBUFFERSIZE];
- unsigned nwords = (PACKBUFFERSIZE >> 1); /* bytes to CARD16 */
-
- for (; len > nwords; len -= nwords, data += nwords) {
- _doFSRead16(svr, data, nwords, packbuffer);
- }
- _doFSRead16(svr, data, len, packbuffer);
-}
-
-void
-_FSRead16Pad(svr, data, size)
- FSServer *svr;
- short *data;
- long size;
-{
- int slop = (size & 3);
- short slopbuf[3];
-
- _FSRead16(svr, data, size);
- if (slop > 0) {
- _FSRead16(svr, slopbuf, 4 - slop);
- }
-}
-
-#endif /* WORD64 */
-
-
-/*
- * _FSReadPad - Read bytes from the socket taking into account incomplete
- * reads. If the number of bytes is not 0 mod 32, read additional pad
- * bytes. This routine may have to be reworked if int < long.
- */
-void
-_FSReadPad(svr, data, size)
- register FSServer *svr;
- register char *data;
- register long size;
-{
- register long bytes_read;
- struct iovec iov[2];
- char pad[3];
-
- if (size == 0)
- return;
- iov[0].iov_len = (int) size;
- iov[0].iov_base = data;
- /*
- * The following hack is used to provide 32 bit long-word aligned padding.
- * The [1] vector is of length 0, 1, 2, or 3, whatever is needed.
- */
-
- iov[1].iov_len = padlength[size & 3];
- iov[1].iov_base = pad;
- size += iov[1].iov_len;
-
- ESET(0);
- while ((bytes_read = _FSTransReadv(svr->trans_conn, iov, 2)) != size) {
-
- if (bytes_read > 0) {
- size -= bytes_read;
- if (iov[0].iov_len < bytes_read) {
- int pad_bytes_read = bytes_read - iov[0].iov_len;
- iov[1].iov_len -= pad_bytes_read;
- iov[1].iov_base =
- (char *)iov[1].iov_base + pad_bytes_read;
- iov[0].iov_len = 0;
- } else {
- iov[0].iov_len -= bytes_read;
- iov[0].iov_base = (char *)iov[0].iov_base + bytes_read;
- }
- }
- else if (ETEST()) {
- _FSWaitForReadable(svr);
- ESET(0);
- }
-#ifdef SUNSYSV
- else if (ECHECK(0)) {
- _FSWaitForReadable(svr);
- }
-#endif
-
- else if (bytes_read == 0) {
- /* Read failed because of end of file! */
- ESET(EPIPE);
- (*_FSIOErrorFunction) (svr);
- } else { /* bytes_read is less than 0; presumably -1 */
- /* If it's a system call interrupt, it's not an error. */
- if (!ECHECK(EINTR))
- (*_FSIOErrorFunction) (svr);
- }
- }
-}
-
-/*
- * _FSSend - Flush the buffer and send the client data. 32 bit word aligned
- * transmission is used, if size is not 0 mod 4, extra bytes are transmitted.
- * This routine may have to be reworked if int < long;
- */
-void
-_FSSend(svr, data, size)
- register FSServer *svr;
- char *data;
- register long size;
-{
- struct iovec iov[3];
- static char pad[3] = {0, 0, 0};
-
- long skip = 0;
- long svrbufsize = (svr->bufptr - svr->buffer);
- long padsize = padlength[size & 3];
- long total = svrbufsize + size + padsize;
- long todo = total;
-
- /*
- * There are 3 pieces that may need to be written out:
- *
- * o whatever is in the display buffer o the data passed in by the user o
- * any padding needed to 32bit align the whole mess
- *
- * This loop looks at all 3 pieces each time through. It uses skip to figure
- * out whether or not a given piece is needed.
- */
- while (total) {
- long before = skip; /* amount of whole thing written */
- long remain = todo; /* amount to try this time, <= total */
- int i = 0;
- long len;
-
- /*
- * You could be very general here and have "in" and "out" iovecs and
- * write a loop without using a macro, but what the heck. This
- * translates to:
- *
- * how much of this piece is new? if more new then we are trying this
- * time, clamp if nothing new then bump down amount already written,
- * for next piece else put new stuff in iovec, will need all of next
- * piece
- *
- * Note that todo had better be at least 1 or else we'll end up writing 0
- * iovecs.
- */
-#define InsertIOV(pointer, length) \
- len = (length) - before; \
- if (len > remain) \
- len = remain; \
- if (len <= 0) { \
- before = (-len); \
- } else { \
- iov[i].iov_len = len; \
- iov[i].iov_base = (pointer) + before; \
- i++; \
- remain -= len; \
- before = 0; \
- }
-
- InsertIOV(svr->buffer, svrbufsize)
- InsertIOV(data, size)
- InsertIOV(pad, padsize)
-
- ESET(0);
- if ((len = _FSTransWritev(svr->trans_conn, iov, i)) >= 0) {
- skip += len;
- total -= len;
- todo = total;
- } else if (ETEST()) {
- _FSWaitForWritable(svr);
-#ifdef SUNSYSV
- } else if (ECHECK(0)) {
- _FSWaitForWritable(svr);
-#endif
-
-#ifdef EMSGSIZE
- } else if (ECHECK(EMSGSIZE)) {
- if (todo > 1)
- todo >>= 1;
- else
- _FSWaitForWritable(svr);
-#endif
- } else {
- (*_FSIOErrorFunction) (svr);
- }
- }
-
- svr->bufptr = svr->buffer;
- svr->last_req = (char *) &_dummy_request;
-}
-
-#ifdef undef
-/*
- * _FSAllocID - normal resource ID allocation routine. A client
- * can roll his own and instatantiate it if he wants, but must
- * follow the rules.
- */
-FSID
-_FSAllocID(svr)
- register FSServer *svr;
-{
- return (svr->resource_base + (svr->resource_id++ << svr->resource_shift));
-}
-
-#endif
-
-/*
- * The hard part about this is that we only get 16 bits from a reply. Well,
- * then, we have three values that will march along, with the following
- * invariant:
- * svr->last_request_read <= rep->sequenceNumber <= svr->request
- * The right choice for rep->sequenceNumber is the largest that
- * still meets these constraints.
- */
-
-unsigned long
-_FSSetLastRequestRead(svr, rep)
- register FSServer *svr;
- register fsGenericReply *rep;
-{
- register unsigned long newseq,
- lastseq;
-
- newseq = (svr->last_request_read & ~((unsigned long) 0xffff)) |
- rep->sequenceNumber;
- lastseq = svr->last_request_read;
- while (newseq < lastseq) {
- newseq += 0x10000;
- if (newseq > svr->request) {
- (void) fprintf(stderr,
- "FSlib: sequence lost (0x%lx > 0x%lx) in reply type 0x%x!\n",
- newseq, svr->request,
- (unsigned int) rep->type);
- newseq -= 0x10000;
- break;
- }
- }
-
- svr->last_request_read = newseq;
- return (newseq);
-}
-
-/*
- * _FSReply - Wait for a reply packet and copy its contents into the
- * specified rep. Mean while we must handle error and event packets that
- * we may encounter.
- */
-Status
-_FSReply(svr, rep, extra, discard)
- register FSServer *svr;
- register fsReply *rep;
- int extra; /* number of 32-bit words expected after the
- * reply */
- Bool discard; /* should I discard data followind "extra"
- * words? */
-{
- /*
- * Pull out the serial number now, so that (currently illegal) requests
- * generated by an error handler don't confuse us.
- */
- unsigned long cur_request = svr->request;
- long rem_length;
-
- _FSFlush(svr);
- while (1) {
- _FSRead(svr, (char *) rep, (long) SIZEOF(fsReply));
- switch ((int) rep->generic.type) {
-
- case FS_Reply:
- /*
- * Reply received. Fast update for synchronous replies, but deal
- * with multiple outstanding replies.
- */
- if (rep->generic.sequenceNumber == (cur_request & 0xffff))
- svr->last_request_read = cur_request;
- else
- (void) _FSSetLastRequestRead(svr, &rep->generic);
- rem_length = rep->generic.length - (SIZEOF(fsReply) >> 2);
- if (rem_length < 0) rem_length = 0;
- if (extra == 0) {
- if (discard && rem_length)
- /* unexpectedly long reply! */
- _EatData32(svr, rem_length);
- return (1);
- }
- if (extra == rem_length) {
- /*
- * Read the extra data into storage immediately following the
- * GenericReply structure.
- */
- _FSRead(svr, (char *) NEXTPTR(rep, fsReply), ((long) extra) << 2);
- return (1);
- }
- if (extra < rem_length) {
- /* Actual reply is longer than "extra" */
- _FSRead(svr, (char *) NEXTPTR(rep, fsReply), ((long) extra) << 2);
- if (discard)
- _EatData32(svr, rem_length - extra);
- return (1);
- }
- /*
- * if we get here, then extra > rem_length -- meaning we
- * read a reply that's shorter than we expected. This is an
- * error, but we still need to figure out how to handle it...
- */
- _FSRead(svr, (char *) NEXTPTR(rep, fsReply), rem_length << 2);
- (*_FSIOErrorFunction) (svr);
- return (0);
-
- case FS_Error:
- {
- register _FSExtension *ext;
- register Bool ret = False;
- int ret_code;
- fsError err;
- unsigned long serial;
- long err_data;
-
- err = *(fsError *) rep;
- /* read the rest of the error */
- _FSRead(svr, (char *) &err + SIZEOF(fsReply),
- (long) (SIZEOF(fsError) - SIZEOF(fsReply)));
- serial = _FSSetLastRequestRead(svr, (fsGenericReply *) rep);
- if (serial == cur_request)
- /* do not die on certain failures */
- switch ((int) err.request) {
- /* suck in any extra error info */
- case FSBadResolution:
- case FSBadLength:
- case FSBadIDChoice:
- case FSBadRange:
- case FSBadFont:
- case FSBadFormat:
- _FSRead(svr, (char *) &err_data, 4);
- break;
- case FSBadAccessContext:
- _FSRead(svr, (char *) &err_data, 4);
- return 0;
- case FSBadAlloc:
- return (0);
- /*
- * we better see if there is an extension who may want
- * to suppress the error.
- */
- default:
- ext = svr->ext_procs;
- while (ext) {
- if (ext->error != NULL)
- ret = (*ext->error)
- (svr, &err, &ext->codes, &ret_code);
- ext = ext->next;
- }
- if (ret)
- return (ret_code);
- break;
- }
- _FSError(svr, &err);
- if (serial == cur_request)
- return (0);
- }
- break;
- default:
- _FSEnq(svr, (fsEvent *) rep);
- break;
- }
- }
-}
-
-
-/* Read and discard "n" 8-bit bytes of data */
-
-void
-_FSEatData(svr, n)
- FSServer *svr;
- register unsigned long n;
-{
-#define SCRATCHSIZE 2048
- char buf[SCRATCHSIZE];
-
- while (n > 0) {
- register long bytes_read = (n > SCRATCHSIZE) ? SCRATCHSIZE : n;
-
- _FSRead(svr, buf, bytes_read);
- n -= bytes_read;
- }
-#undef SCRATCHSIZE
-}
-
-
-/* Read and discard "n" 32-bit words. */
-
-static void
-_EatData32(svr, n)
- FSServer *svr;
- unsigned long n;
-{
- _FSEatData(svr, n << 2);
-}
-
-
-/*
- * _FSEnq - Place event packets on the display's queue.
- * note that no squishing of move events in V11, since there
- * is pointer motion hints....
- */
-void
-_FSEnq(svr, event)
- register FSServer *svr;
- register fsEvent *event;
-{
- register _FSQEvent *qelt;
-
-/*NOSTRICT*/
- if ((qelt = _FSqfree) != NULL) {
- /* If _FSqfree is non-NULL do this, else malloc a new one. */
- _FSqfree = qelt->next;
- } else if ((qelt =
- (_FSQEvent *) FSmalloc((unsigned) sizeof(_FSQEvent))) == NULL) {
- /* Malloc call failed! */
- ESET(ENOMEM);
- (*_FSIOErrorFunction) (svr);
- }
- qelt->next = NULL;
- /* go call through display to find proper event reformatter */
- if ((*svr->event_vec[event->type & 0177]) (svr, &qelt->event, event)) {
- if (svr->tail)
- svr->tail->next = qelt;
- else
- svr->head = qelt;
-
- svr->tail = qelt;
- svr->qlen++;
- } else {
- /* ignored, or stashed away for many-to-one compression */
- qelt->next = _FSqfree;
- _FSqfree = qelt;
- }
-}
-
-/*
- * EventToWire in seperate file in that often not needed.
- */
-
-/*ARGSUSED*/
-Bool
-_FSUnknownWireEvent(svr, re, event)
- register FSServer *svr; /* pointer to display structure */
- register FSEvent *re; /* pointer to where event should be
- * reformatted */
- register fsEvent *event; /* wire protocol event */
-{
-
-#ifdef notdef
- (void) fprintf(stderr,
- "FSlib: unhandled wire event! event number = %d, display = %x\n.",
- event->type, svr);
-#endif
-
- return (False);
-}
-
-/*ARGSUSED*/
-Status
-_FSUnknownNativeEvent(svr, re, event)
- register FSServer *svr; /* pointer to display structure */
- register FSEvent *re; /* pointer to where event should be
- * reformatted */
- register fsEvent *event; /* wire protocol event */
-{
-
-#ifdef notdef
- (void) fprintf(stderr,
- "FSlib: unhandled native event! event number = %d, display = %x\n.",
- re->type, svr);
-#endif
-
- return (0);
-}
-
-/*
- * reformat a wire event into an FSEvent structure of the right type.
- */
-Bool
-_FSWireToEvent(svr, re, event)
- register FSServer *svr; /* pointer to display structure */
- register FSEvent *re; /* pointer to where event should be
- * reformatted */
- register fsEvent *event; /* wire protocol event */
-{
-
- re->type = event->type & 0x7f;
- ((FSAnyEvent *) re)->serial = _FSSetLastRequestRead(svr,
- (fsGenericReply *) event);
- ((FSAnyEvent *) re)->send_event = ((event->type & 0x80) != 0);
- ((FSAnyEvent *) re)->server = svr;
-
- /*
- * Ignore the leading bit of the event type since it is set when a client
- * sends an event rather than the server.
- */
-
- switch (event->type & 0177) {
- default:
- return (_FSUnknownWireEvent(svr, re, event));
- }
-}
-
-
-static char *
-_SysErrorMsg(n)
- int n;
-{
- char *s = strerror(n);
-
- return (s ? s : "no such error");
-}
-
-/*
- * _FSDefaultIOError - Default fatal system error reporting routine. Called
- * when an X internal system error is encountered.
- */
-int
-_FSDefaultIOError(svr)
- FSServer *svr;
-{
- (void) fprintf(stderr,
- "FSIO: fatal IO error %d (%s) on font server \"%s\"\r\n",
-#ifdef WIN32
- WSAGetLastError(), strerror(WSAGetLastError()),
-#else
-
- errno, _SysErrorMsg(errno),
-#endif
- FSServerString(svr));
- (void) fprintf(stderr,
- " after %lu requests (%lu known processed) with %d events remaining.\r\n",
- FSNextRequest(svr) - 1, FSLastKnownRequestProcessed(svr),
- FSQLength(svr));
-
- if (ECHECK(EPIPE)) {
- (void) fprintf(stderr,
- " The connection was probably broken by a server shutdown.\r\n");
- }
- exit(1);
- /* NOTREACHED */
-}
-
-/*
- * _FSError - Default non-fatal error reporting routine. Called when an
- * FS_Error packet is encountered in the input stream.
- */
-int
-_FSError(svr, rep)
- FSServer *svr;
- fsError *rep;
-{
- FSErrorEvent event;
-
- /*
- * FS_Error packet encountered! We need to unpack the error before giving
- * it to the user.
- */
-
- event.server = svr;
- event.type = FS_Error;
- event.serial = _FSSetLastRequestRead(svr, (fsGenericReply *) rep);
- event.error_code = rep->request;
- event.request_code = rep->major_opcode;
- event.minor_code = rep->minor_opcode;
- if (_FSErrorFunction != NULL) {
- return ((*_FSErrorFunction) (svr, &event));
- }
- exit(1);
- /* NOTREACHED */
-}
-
-int
-_FSPrintDefaultError(svr, event, fp)
- FSServer *svr;
- FSErrorEvent *event;
- FILE *fp;
-{
- char buffer[BUFSIZ];
- char mesg[BUFSIZ];
- char number[32];
- char *mtype = "FSlibMessage";
- register _FSExtension *ext = (_FSExtension *) NULL;
-
- (void) FSGetErrorText(svr, event->error_code, buffer, BUFSIZ);
- (void) FSGetErrorDatabaseText(svr, mtype, "FSError", "FS Error", mesg,
- BUFSIZ);
- (void) fprintf(fp, "%s: %s\n ", mesg, buffer);
- (void) FSGetErrorDatabaseText(svr, mtype, "MajorCode",
- "Request Major code %d", mesg, BUFSIZ);
- (void) fprintf(fp, mesg, event->request_code);
- if (event->request_code < 128) {
- sprintf(number, "%d", event->request_code);
- (void) FSGetErrorDatabaseText(svr, "FSRequest", number, "", buffer,
- BUFSIZ);
- } else {
- for (ext = svr->ext_procs;
- ext && (ext->codes.major_opcode != event->request_code);
- ext = ext->next);
- if (ext)
- strcpy(buffer, ext->name);
- else
- buffer[0] = '\0';
- }
- (void) fprintf(fp, " (%s)\n ", buffer);
- (void) FSGetErrorDatabaseText(svr, mtype, "MinorCode",
- "Request Minor code %d", mesg, BUFSIZ);
- (void) fprintf(fp, mesg, event->minor_code);
- if (ext) {
- sprintf(mesg, "%s.%d", ext->name, event->minor_code);
- (void) FSGetErrorDatabaseText(svr, "FSRequest", mesg, "", buffer,
- BUFSIZ);
- (void) fprintf(fp, " (%s)", buffer);
- }
- fputs("\n ", fp);
- (void) FSGetErrorDatabaseText(svr, mtype, "ResourceID", "ResourceID 0x%x",
- mesg, BUFSIZ);
- (void) fprintf(fp, mesg, event->resourceid);
- fputs("\n ", fp);
- (void) FSGetErrorDatabaseText(svr, mtype, "ErrorSerial", "Error Serial #%d",
- mesg, BUFSIZ);
- (void) fprintf(fp, mesg, event->serial);
- fputs("\n ", fp);
- (void) FSGetErrorDatabaseText(svr, mtype, "CurrentSerial",
- "Current Serial #%d", mesg, BUFSIZ);
- (void) fprintf(fp, mesg, svr->request);
- fputs("\n", fp);
- return 1;
-}
-
-int
-_FSDefaultError(svr, event)
- FSServer *svr;
- FSErrorEvent *event;
-{
- if (_FSPrintDefaultError(svr, event, stderr) == 0)
- return 0;
- exit(1);
- /* NOTREACHED */
-}
-
-
-FSIOErrorHandler _FSIOErrorFunction = _FSDefaultIOError;
-FSErrorHandler _FSErrorFunction = _FSDefaultError;
-
-/*
- * This routine can be used to (cheaply) get some memory within a single
- * Xlib routine for scratch space. It is reallocated from the same place
- * each time, unless the library needs a large scratch space.
- */
-char *
-_FSAllocScratch(svr, nbytes)
- register FSServer *svr;
- unsigned long nbytes;
-{
- if (nbytes > svr->scratch_length) {
- if (svr->scratch_buffer != NULL)
- FSfree(svr->scratch_buffer);
- return (svr->scratch_length = nbytes,
- svr->scratch_buffer = FSmalloc((unsigned) nbytes));
- }
- return (svr->scratch_buffer);
-}
-
-int
-FSFree(data)
- char *data;
-{
- FSfree(data);
- return 1;
-}
-
-unsigned char *
-FSMalloc(size)
- unsigned size;
-{
- return (unsigned char *) FSmalloc(size);
-}
-
-#ifdef DataRoutineIsProcedure
-void
-Data(svr, data, len)
- FSServer *svr;
- char *data;
- long len;
-{
- if (svr->bufptr + (len) <= svr->bufmax) {
- bcopy(data, svr->bufptr, (int) len);
- svr->bufptr += ((len) + 3) & ~3;
- } else {
- _FSSend(svr, data, len);
- }
-}
-
-#endif /* DataRoutineIsProcedure */
-
-
-#ifdef WORD64
-/*
- * XXX This is a *really* stupid way of doing this. It should just use
- * svr->bufptr directly, taking into account where in the word it is.
- */
-
-/*
- * Data16 - Place 16 bit data in the buffer.
- *
- * "svr" is a pointer to a FSServer.
- * "data" is a pointer to the data.
- * "len" is the length in bytes of the data.
- */
-
-static void
-doData16(svr, data, len, packbuffer)
- register FSServer *svr;
- short *data;
- unsigned len;
- char *packbuffer;
-{
- long *lp,
- *lpack;
- long i,
- nwords,
- bits;
- long mask16 = 0x000000000000ffff;
-
- lp = (long *) data;
- lpack = (long *) packbuffer;
- *lpack = 0;
-
-/* nwords is the number of 16 bit values to be packed,
- * the low order 16 bits of each word will be packed
- * into 64 bit words
- */
- nwords = len >> 1;
- bits = 48;
-
- for (i = 0; i < nwords; i++) {
- *lpack ^= (*lp & mask16) << bits;
- bits -= 16;
- lp++;
- if (bits < 0) {
- lpack++;
- *lpack = 0;
- bits = 48;
- }
- }
- Data(svr, packbuffer, len);
-}
-
-void
-Data16(svr, data, len)
- FSServer *svr;
- short *data;
- unsigned len;
-{
- char packbuffer[PACKBUFFERSIZE];
- unsigned nwords = (PACKBUFFERSIZE >> 1); /* bytes to CARD16 */
-
- for (; len > nwords; len -= nwords, data += nwords) {
- doData16(svr, data, nwords, packbuffer);
- }
- doData16(svr, data, len, packbuffer);
-}
-
-/*
- * Data32 - Place 32 bit data in the buffer.
- *
- * "svr" is a pointer to a FSServer.
- * "data" is a pointer to the data.
- * "len" is the length in bytes of the data.
- */
-
-static
-doData32(svr, data, len, packbuffer)
- register FSServer *svr;
- long *data;
- unsigned len;
- char *packbuffer;
-{
- long *lp,
- *lpack;
- long i,
- bits,
- nwords;
- long mask32 = 0x00000000ffffffff;
-
- lpack = (long *) packbuffer;
- lp = data;
-
- *lpack = 0;
-
-/* nwords is the number of 32 bit values to be packed
- * the low order 32 bits of each word will be packed
- * into 64 bit words
- */
- nwords = len >> 2;
- bits = 32;
-
- for (i = 0; i < nwords; i++) {
- *lpack ^= (*lp & mask32) << bits;
- bits = bits ^ 32;
- lp++;
- if (bits) {
- lpack++;
- *lpack = 0;
- }
- }
- Data(svr, packbuffer, len);
-}
-
-void
-Data32(svr, data, len)
- FSServer *svr;
- short *data;
- unsigned len;
-{
- char packbuffer[PACKBUFFERSIZE];
- unsigned nwords = (PACKBUFFERSIZE >> 2); /* bytes to CARD32 */
-
- for (; len > nwords; len -= nwords, data += nwords) {
- doData32(svr, data, nwords, packbuffer);
- }
- doData32(svr, data, len, packbuffer);
-}
-
-#endif /* WORD64 */
-
-
-
-/*
- * _FSFreeQ - free the queue of events, called by XCloseServer when there are
- * no more displays left on the display list
- */
-
-void
-_FSFreeQ()
-{
- register _FSQEvent *qelt = _FSqfree;
-
- while (qelt) {
- register _FSQEvent *qnext = qelt->next;
-
- FSfree(qelt);
- qelt = qnext;
- }
- _FSqfree = NULL;
- return;
-}
-
-#ifdef _POSIX_SOURCE /* stupid makedepend [need if] */
-#ifndef __QNX__ /* QNX's uname nodename entry is not same as tcpip hostname */
-#define NEED_UTSNAME
-#endif
-#endif
-#ifdef hpux
-#define NEED_UTSNAME
-#endif
-#ifdef USG
-#define NEED_UTSNAME
-#endif
-#ifdef SVR4
-#ifndef _SEQUENT_
-#define NEED_UTSNAME
-#endif
-#endif
-
-#ifdef NEED_UTSNAME
-#include <sys/utsname.h>
-#endif
-
-
-/*
- * _FSGetHostname - similar to gethostname but allows special processing.
- */
-int
-_FSGetHostname(buf, maxlen)
- char *buf;
- int maxlen;
-{
- int len;
-
-#ifdef NEED_UTSNAME
- /*
- * same host name crock as in server and xinit.
- */
- struct utsname name;
-
- uname(&name);
- len = strlen(name.nodename);
- if (len >= maxlen)
- len = maxlen - 1;
- strncpy(buf, name.nodename, len);
- buf[len] = '\0';
-#else
- buf[0] = '\0';
- (void) gethostname(buf, maxlen);
- buf[maxlen - 1] = '\0';
- len = strlen(buf);
-#endif /* NEED_UTSNAME */
-
- return len;
-}
-
-#ifndef _FSANYSET
-/*
- * This is not always a macro.
- */
-_FSANYSET(src)
- long *src;
-{
- int i;
-
- for (i=0; i<MSKCNT; i++)
- if (src[ i ])
- return (1);
- return (0);
-}
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 18:37:35 +0000