+++ /dev/null
-/************************************************************
-
-Copyright (c) 1989 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-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
-X CONSORTIUM 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 X Consortium 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 X Consortium.
-
-********************************************************/
-
-/* THIS IS NOT AN X CONSORTIUM STANDARD */
-
-/* $XConsortium: shm.c,v 1.25 95/04/06 16:00:55 dpw Exp $ */
-/* $XFree86: xc/programs/Xserver/Xext/shm.c,v 3.8 1997/01/18 06:52:59 dawes Exp $ */
-
-#include <sys/types.h>
-#ifndef Lynx
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#else
-#include <ipc.h>
-#include <shm.h>
-#endif
-#define NEED_REPLIES
-#define NEED_EVENTS
-#include "X.h"
-#include "Xproto.h"
-#include "misc.h"
-#include "os.h"
-#include "dixstruct.h"
-#include "resource.h"
-#include "scrnintstr.h"
-#include "windowstr.h"
-#include "pixmapstr.h"
-#include "gcstruct.h"
-#include "extnsionst.h"
-#include "servermd.h"
-#define _XSHM_SERVER_
-#include "shmstr.h"
-#include "Xfuncproto.h"
-
-typedef struct _ShmDesc {
- struct _ShmDesc *next;
- int shmid;
- int refcnt;
- char *addr;
- Bool writable;
- unsigned long size;
-} ShmDescRec, *ShmDescPtr;
-
-static void miShmPutImage(XSHM_PUT_IMAGE_ARGS);
-static void fbShmPutImage(XSHM_PUT_IMAGE_ARGS);
-static PixmapPtr fbShmCreatePixmap(XSHM_CREATE_PIXMAP_ARGS);
-static int ShmDetachSegment(
-#if NeedFunctionPrototypes
- pointer /* value */,
- XID /* shmseg */
-#endif
- );
-static void ShmResetProc(
-#if NeedFunctionPrototypes
- ExtensionEntry * /* extEntry */
-#endif
- );
-static void SShmCompletionEvent(
-#if NeedFunctionPrototypes
- xShmCompletionEvent * /* from */,
- xShmCompletionEvent * /* to */
-#endif
- );
-
-static DISPATCH_PROC(ProcShmAttach);
-static DISPATCH_PROC(ProcShmCreatePixmap);
-static DISPATCH_PROC(ProcShmDetach);
-static DISPATCH_PROC(ProcShmDispatch);
-static DISPATCH_PROC(ProcShmGetImage);
-static DISPATCH_PROC(ProcShmGetImage);
-static DISPATCH_PROC(ProcShmGetImage);
-static DISPATCH_PROC(ProcShmPutImage);
-static DISPATCH_PROC(ProcShmQueryVersion);
-static DISPATCH_PROC(SProcShmAttach);
-static DISPATCH_PROC(SProcShmCreatePixmap);
-static DISPATCH_PROC(SProcShmDetach);
-static DISPATCH_PROC(SProcShmDispatch);
-static DISPATCH_PROC(SProcShmGetImage);
-static DISPATCH_PROC(SProcShmPutImage);
-static DISPATCH_PROC(SProcShmQueryVersion);
-
-static unsigned char ShmReqCode;
-static int ShmCompletionCode;
-static int BadShmSegCode;
-static RESTYPE ShmSegType, ShmPixType;
-static ShmDescPtr Shmsegs;
-static Bool sharedPixmaps;
-static int pixmapFormat;
-static int shmPixFormat[MAXSCREENS];
-static ShmFuncsPtr shmFuncs[MAXSCREENS];
-static ShmFuncs miFuncs = {NULL, miShmPutImage};
-static ShmFuncs fbFuncs = {fbShmCreatePixmap, fbShmPutImage};
-
-#define VERIFY_SHMSEG(shmseg,shmdesc,client) \
-{ \
- shmdesc = (ShmDescPtr)LookupIDByType(shmseg, ShmSegType); \
- if (!shmdesc) \
- { \
- client->errorValue = shmseg; \
- return BadShmSegCode; \
- } \
-}
-
-#define VERIFY_SHMPTR(shmseg,offset,needwrite,shmdesc,client) \
-{ \
- VERIFY_SHMSEG(shmseg, shmdesc, client); \
- if ((offset & 3) || (offset > shmdesc->size)) \
- { \
- client->errorValue = offset; \
- return BadValue; \
- } \
- if (needwrite && !shmdesc->writable) \
- return BadAccess; \
-}
-
-#define VERIFY_SHMSIZE(shmdesc,offset,len,client) \
-{ \
- if ((offset + len) > shmdesc->size) \
- { \
- return BadAccess; \
- } \
-}
-
-
-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
-#include <sys/signal.h>
-
-static Bool badSysCall = FALSE;
-
-static void
-SigSysHandler(signo)
-int signo;
-{
- badSysCall = TRUE;
-}
-
-static Bool CheckForShmSyscall()
-{
- void (*oldHandler)();
- int shmid = -1;
-
- /* If no SHM support in the kernel, the bad syscall will generate SIGSYS */
- oldHandler = signal(SIGSYS, SigSysHandler);
-
- badSysCall = FALSE;
- shmid = shmget(IPC_PRIVATE, 4096, IPC_CREAT);
- /* Clean up */
- if (shmid != -1)
- {
- shmctl(shmid, IPC_RMID, (struct shmid_ds *)NULL);
- }
- signal(SIGSYS, oldHandler);
- return(!badSysCall);
-}
-#endif
-
-void
-ShmExtensionInit()
-{
- ExtensionEntry *extEntry;
- int i;
-
-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
- if (!CheckForShmSyscall())
- {
- ErrorF("MIT-SHM extension disabled due to lack of kernel support\n");
- return;
- }
-#endif
-
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- sharedPixmaps = xFalse;
- pixmapFormat = 0;
-#else
- sharedPixmaps = xTrue;
- pixmapFormat = shmPixFormat[0];
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- if (!shmFuncs[i])
- shmFuncs[i] = &miFuncs;
- if (!shmFuncs[i]->CreatePixmap)
- sharedPixmaps = xFalse;
- if (shmPixFormat[i] && (shmPixFormat[i] != pixmapFormat))
- {
- sharedPixmaps = xFalse;
- pixmapFormat = 0;
- }
- }
- if (!pixmapFormat)
- pixmapFormat = ZPixmap;
-#endif
- ShmSegType = CreateNewResourceType(ShmDetachSegment);
- ShmPixType = CreateNewResourceType(ShmDetachSegment);
- if (ShmSegType && ShmPixType &&
- (extEntry = AddExtension(SHMNAME, ShmNumberEvents, ShmNumberErrors,
- ProcShmDispatch, SProcShmDispatch,
- ShmResetProc, StandardMinorOpcode)))
- {
- ShmReqCode = (unsigned char)extEntry->base;
- ShmCompletionCode = extEntry->eventBase;
- BadShmSegCode = extEntry->errorBase;
- EventSwapVector[ShmCompletionCode] = (EventSwapPtr) SShmCompletionEvent;
- }
-}
-
-/*ARGSUSED*/
-static void
-ShmResetProc (extEntry)
-ExtensionEntry *extEntry;
-{
- int i;
-
- for (i = 0; i < MAXSCREENS; i++)
- {
- shmFuncs[i] = (ShmFuncsPtr)NULL;
- shmPixFormat[i] = 0;
- }
-}
-
-void
-ShmRegisterFuncs(pScreen, funcs)
- ScreenPtr pScreen;
- ShmFuncsPtr funcs;
-{
- shmFuncs[pScreen->myNum] = funcs;
-}
-
-void
-ShmSetPixmapFormat(pScreen, format)
- ScreenPtr pScreen;
- int format;
-{
- shmPixFormat[pScreen->myNum] = format;
-}
-
-void
-ShmRegisterFbFuncs(pScreen)
- ScreenPtr pScreen;
-{
- shmFuncs[pScreen->myNum] = &fbFuncs;
-}
-
-static int
-ProcShmQueryVersion(client)
- register ClientPtr client;
-{
- xShmQueryVersionReply rep;
- register int n;
-
- REQUEST_SIZE_MATCH(xShmQueryVersionReq);
- rep.type = X_Reply;
- rep.length = 0;
- rep.sequenceNumber = client->sequence;
- rep.sharedPixmaps = sharedPixmaps;
- rep.pixmapFormat = pixmapFormat;
- rep.majorVersion = SHM_MAJOR_VERSION;
- rep.minorVersion = SHM_MINOR_VERSION;
- rep.uid = geteuid();
- rep.gid = getegid();
- if (client->swapped) {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swaps(&rep.majorVersion, n);
- swaps(&rep.minorVersion, n);
- swaps(&rep.uid, n);
- swaps(&rep.gid, n);
- }
- WriteToClient(client, sizeof(xShmQueryVersionReply), (char *)&rep);
- return (client->noClientException);
-}
-
-static int
-ProcShmAttach(client)
- register ClientPtr client;
-{
- struct shmid_ds buf;
- ShmDescPtr shmdesc;
- REQUEST(xShmAttachReq);
-
- REQUEST_SIZE_MATCH(xShmAttachReq);
- LEGAL_NEW_RESOURCE(stuff->shmseg, client);
- if ((stuff->readOnly != xTrue) && (stuff->readOnly != xFalse))
- {
- client->errorValue = stuff->readOnly;
- return(BadValue);
- }
- for (shmdesc = Shmsegs;
- shmdesc && (shmdesc->shmid != stuff->shmid);
- shmdesc = shmdesc->next)
- ;
- if (shmdesc)
- {
- if (!stuff->readOnly && !shmdesc->writable)
- return BadAccess;
- shmdesc->refcnt++;
- }
- else
- {
- shmdesc = (ShmDescPtr) xalloc(sizeof(ShmDescRec));
- if (!shmdesc)
- return BadAlloc;
- shmdesc->addr = shmat(stuff->shmid, 0,
- stuff->readOnly ? SHM_RDONLY : 0);
- if ((shmdesc->addr == ((char *)-1)) ||
- shmctl(stuff->shmid, IPC_STAT, &buf))
- {
- xfree(shmdesc);
- return BadAccess;
- }
- shmdesc->shmid = stuff->shmid;
- shmdesc->refcnt = 1;
- shmdesc->writable = !stuff->readOnly;
- shmdesc->size = buf.shm_segsz;
- shmdesc->next = Shmsegs;
- Shmsegs = shmdesc;
- }
- if (!AddResource(stuff->shmseg, ShmSegType, (pointer)shmdesc))
- return BadAlloc;
- return(client->noClientException);
-}
-
-/*ARGSUSED*/
-static int
-ShmDetachSegment(value, shmseg)
- pointer value; /* must conform to DeleteType */
- XID shmseg;
-{
- ShmDescPtr shmdesc = (ShmDescPtr)value;
- ShmDescPtr *prev;
-
- if (--shmdesc->refcnt)
- return TRUE;
- shmdt(shmdesc->addr);
- for (prev = &Shmsegs; *prev != shmdesc; prev = &(*prev)->next)
- ;
- *prev = shmdesc->next;
- xfree(shmdesc);
- return Success;
-}
-
-static int
-ProcShmDetach(client)
- register ClientPtr client;
-{
- ShmDescPtr shmdesc;
- REQUEST(xShmDetachReq);
-
- REQUEST_SIZE_MATCH(xShmDetachReq);
- VERIFY_SHMSEG(stuff->shmseg, shmdesc, client);
- FreeResource(stuff->shmseg, RT_NONE);
- return(client->noClientException);
-}
-
-static void
-miShmPutImage(dst, pGC, depth, format, w, h, sx, sy, sw, sh, dx, dy, data)
- DrawablePtr dst;
- GCPtr pGC;
- int depth, w, h, sx, sy, sw, sh, dx, dy;
- unsigned int format;
- char *data;
-{
- PixmapPtr pmap;
- GCPtr putGC;
-
- putGC = GetScratchGC(depth, dst->pScreen);
- if (!putGC)
- return;
- pmap = (*dst->pScreen->CreatePixmap)(dst->pScreen, sw, sh, depth);
- if (!pmap)
- {
- FreeScratchGC(putGC);
- return;
- }
- ValidateGC((DrawablePtr)pmap, putGC);
- (*putGC->ops->PutImage)((DrawablePtr)pmap, putGC, depth, -sx, -sy, w, h, 0,
- (format == XYPixmap) ? XYPixmap : ZPixmap, data);
- FreeScratchGC(putGC);
- if (format == XYBitmap)
- (void)(*pGC->ops->CopyPlane)((DrawablePtr)pmap, dst, pGC, 0, 0, sw, sh,
- dx, dy, 1L);
- else
- (void)(*pGC->ops->CopyArea)((DrawablePtr)pmap, dst, pGC, 0, 0, sw, sh,
- dx, dy);
- (*pmap->drawable.pScreen->DestroyPixmap)(pmap);
-}
-
-static void
-fbShmPutImage(dst, pGC, depth, format, w, h, sx, sy, sw, sh, dx, dy, data)
- DrawablePtr dst;
- GCPtr pGC;
- int depth, w, h, sx, sy, sw, sh, dx, dy;
- unsigned int format;
- char *data;
-{
- if ((format == ZPixmap) || (depth == 1))
- {
- PixmapPtr pPixmap;
-
- pPixmap = GetScratchPixmapHeader(dst->pScreen, w, h, depth,
- /*XXX*/depth, PixmapBytePad(w, depth), (pointer)data);
- if (!pPixmap)
- return;
- if (format == XYBitmap)
- (void)(*pGC->ops->CopyPlane)((DrawablePtr)pPixmap, dst, pGC,
- sx, sy, sw, sh, dx, dy, 1L);
- else
- (void)(*pGC->ops->CopyArea)((DrawablePtr)pPixmap, dst, pGC,
- sx, sy, sw, sh, dx, dy);
- FreeScratchPixmapHeader(pPixmap);
- }
- else
- miShmPutImage(dst, pGC, depth, format, w, h, sx, sy, sw, sh, dx, dy,
- data);
-}
-
-static int
-ProcShmPutImage(client)
- register ClientPtr client;
-{
- register GCPtr pGC;
- register DrawablePtr pDraw;
- long length;
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- long lengthProto;
- char *tmpImage;
- int tmpAlloced = 0;
-#endif
- ShmDescPtr shmdesc;
- REQUEST(xShmPutImageReq);
-
- REQUEST_SIZE_MATCH(xShmPutImageReq);
- VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, pGC, client);
- VERIFY_SHMPTR(stuff->shmseg, stuff->offset, FALSE, shmdesc, client);
- if ((stuff->sendEvent != xTrue) && (stuff->sendEvent != xFalse))
- return BadValue;
- if (stuff->format == XYBitmap)
- {
- if (stuff->depth != 1)
- return BadMatch;
- length = PixmapBytePad(stuff->totalWidth, 1);
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- lengthProto = PixmapBytePadProto(stuff->totalWidth, 1);
-#endif
- }
- else if (stuff->format == XYPixmap)
- {
- if (pDraw->depth != stuff->depth)
- return BadMatch;
- length = PixmapBytePad(stuff->totalWidth, 1);
- length *= stuff->depth;
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- lengthProto = PixmapBytePadProto(stuff->totalWidth, 1);
- lengthProto *= stuff->depth;
-#endif
- }
- else if (stuff->format == ZPixmap)
- {
- if (pDraw->depth != stuff->depth)
- return BadMatch;
- length = PixmapBytePad(stuff->totalWidth, stuff->depth);
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- lengthProto = PixmapBytePadProto(stuff->totalWidth, stuff->depth);
-#endif
- }
- else
- {
- client->errorValue = stuff->format;
- return BadValue;
- }
-
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- VERIFY_SHMSIZE(shmdesc, stuff->offset, lengthProto * stuff->totalHeight,
- client);
-#else
- VERIFY_SHMSIZE(shmdesc, stuff->offset, length * stuff->totalHeight,
- client);
-#endif
- if (stuff->srcX > stuff->totalWidth)
- {
- client->errorValue = stuff->srcX;
- return BadValue;
- }
- if (stuff->srcY > stuff->totalHeight)
- {
- client->errorValue = stuff->srcY;
- return BadValue;
- }
- if ((stuff->srcX + stuff->srcWidth) > stuff->totalWidth)
- {
- client->errorValue = stuff->srcWidth;
- return BadValue;
- }
- if ((stuff->srcY + stuff->srcHeight) > stuff->totalHeight)
- {
- client->errorValue = stuff->srcHeight;
- return BadValue;
- }
-
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- /* handle 64 bit case where protocol may pad to 32 and we want 64
- * In this case, length is what the server wants and lengthProto is
- * what the protocol thinks it is. If the the two are different,
- * copy the protocol version (i.e. the memory shared between the
- * server and the client) to a version with a scanline pad of 64.
- */
- if (length != lengthProto)
- {
- register int i;
- char * stuffptr, /* pointer into protocol data */
- * tmpptr; /* new location to copy to */
-
- if(!(tmpImage = (char *) ALLOCATE_LOCAL(length*stuff->totalHeight)))
- return (BadAlloc);
- tmpAlloced = 1;
-
- bzero(tmpImage,length*stuff->totalHeight);
-
- if (stuff->format == XYPixmap)
- {
- int lineBytes = PixmapBytePad(stuff->totalWidth, 1);
- int lineBytesProto = PixmapBytePadProto(stuff->totalWidth, 1);
- int depth = stuff->depth;
-
- stuffptr = shmdesc->addr + stuff->offset ;
- tmpptr = tmpImage;
- for (i = 0; i < stuff->totalHeight*stuff->depth;
- stuffptr += lineBytesProto,tmpptr += lineBytes, i++)
- bcopy(stuffptr,tmpptr,lineBytesProto);
- }
- else
- {
- for (i = 0,
- stuffptr = shmdesc->addr + stuff->offset,
- tmpptr=tmpImage;
- i < stuff->totalHeight;
- stuffptr += lengthProto,tmpptr += length, i++)
- bcopy(stuffptr,tmpptr,lengthProto);
- }
- }
- /* handle 64-bit case where stuff is not 64-bit aligned
- */
- else if ((unsigned long)(shmdesc->addr+stuff->offset) &
- (sizeof(long)-1))
- {
- if(!(tmpImage = (char *) ALLOCATE_LOCAL(length*stuff->totalHeight)))
- return (BadAlloc);
- tmpAlloced = 1;
- bcopy((char *)(shmdesc->addr+stuff->offset),
- tmpImage,
- length*stuff->totalHeight);
- }
- else
- tmpImage = (char *)(shmdesc->addr+stuff->offset);
-#endif
-
- if ((((stuff->format == ZPixmap) && (stuff->srcX == 0)) ||
- ((stuff->format != ZPixmap) &&
- (stuff->srcX < screenInfo.bitmapScanlinePad) &&
- ((stuff->format == XYBitmap) ||
- ((stuff->srcY == 0) &&
- (stuff->srcHeight == stuff->totalHeight))))) &&
- ((stuff->srcX + stuff->srcWidth) == stuff->totalWidth))
- (*pGC->ops->PutImage) (pDraw, pGC, stuff->depth,
- stuff->dstX, stuff->dstY,
- stuff->totalWidth, stuff->srcHeight,
- stuff->srcX, stuff->format,
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- tmpImage +
-#else
- shmdesc->addr + stuff->offset +
-#endif
- (stuff->srcY * length));
- else
- (*shmFuncs[pDraw->pScreen->myNum]->PutImage)(
- pDraw, pGC, stuff->depth, stuff->format,
- stuff->totalWidth, stuff->totalHeight,
- stuff->srcX, stuff->srcY,
- stuff->srcWidth, stuff->srcHeight,
- stuff->dstX, stuff->dstY,
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- tmpImage);
-
-#else
- shmdesc->addr + stuff->offset);
-#endif
-
- if (stuff->sendEvent)
- {
- xShmCompletionEvent ev;
-
- ev.type = ShmCompletionCode;
- ev.drawable = stuff->drawable;
- ev.sequenceNumber = client->sequence;
- ev.minorEvent = X_ShmPutImage;
- ev.majorEvent = ShmReqCode;
- ev.shmseg = stuff->shmseg;
- ev.offset = stuff->offset;
- WriteEventsToClient(client, 1, (xEvent *) &ev);
- }
-
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- if (tmpAlloced)
- DEALLOCATE_LOCAL(tmpImage);
-#endif
-
- return (client->noClientException);
-}
-
-
-
-static int
-ProcShmGetImage(client)
- register ClientPtr client;
-{
- register DrawablePtr pDraw;
- long lenPer, length;
- Mask plane;
- xShmGetImageReply xgi;
- ShmDescPtr shmdesc;
- int n;
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- long widthBytesLine,widthBytesLineProto;
- long lenPerProto,lengthProto;
- char *tmpImage;
- int tmpAlloced = 0;
-#endif
-
- REQUEST(xShmGetImageReq);
-
- REQUEST_SIZE_MATCH(xShmGetImageReq);
- if ((stuff->format != XYPixmap) && (stuff->format != ZPixmap))
- {
- client->errorValue = stuff->format;
- return(BadValue);
- }
- VERIFY_DRAWABLE(pDraw, stuff->drawable, client);
- VERIFY_SHMPTR(stuff->shmseg, stuff->offset, TRUE, shmdesc, client);
- if (pDraw->type == DRAWABLE_WINDOW)
- {
- if( /* check for being viewable */
- !((WindowPtr) pDraw)->realized ||
- /* check for being on screen */
- pDraw->x + stuff->x < 0 ||
- pDraw->x + stuff->x + (int)stuff->width > pDraw->pScreen->width ||
- pDraw->y + stuff->y < 0 ||
- pDraw->y + stuff->y + (int)stuff->height > pDraw->pScreen->height ||
- /* check for being inside of border */
- stuff->x < - wBorderWidth((WindowPtr)pDraw) ||
- stuff->x + (int)stuff->width >
- wBorderWidth((WindowPtr)pDraw) + (int)pDraw->width ||
- stuff->y < -wBorderWidth((WindowPtr)pDraw) ||
- stuff->y + (int)stuff->height >
- wBorderWidth((WindowPtr)pDraw) + (int)pDraw->height
- )
- return(BadMatch);
- xgi.visual = wVisual(((WindowPtr)pDraw));
- }
- else
- {
- if (stuff->x < 0 ||
- stuff->x+(int)stuff->width > pDraw->width ||
- stuff->y < 0 ||
- stuff->y+(int)stuff->height > pDraw->height
- )
- return(BadMatch);
- xgi.visual = None;
- }
- xgi.type = X_Reply;
- xgi.length = 0;
- xgi.sequenceNumber = client->sequence;
- xgi.depth = pDraw->depth;
- if(stuff->format == ZPixmap)
- {
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- widthBytesLine = PixmapBytePad(stuff->width, pDraw->depth);
- length = widthBytesLine * stuff->height;
- widthBytesLineProto = PixmapBytePadProto(stuff->width, pDraw->depth);
- lengthProto = widthBytesLineProto * stuff->height;
-#else
- length = PixmapBytePad(stuff->width, pDraw->depth) * stuff->height;
-#endif
- }
- else
- {
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- widthBytesLine = PixmapBytePad(stuff->width, 1);
- lenPer = widthBytesLine * stuff->height;
- plane = ((Mask)1) << (pDraw->depth - 1);
- /* only planes asked for */
- length = lenPer * Ones(stuff->planeMask & (plane | (plane - 1)));
-
- widthBytesLineProto = PixmapBytePadProto(stuff->width, 1);
- lenPerProto = widthBytesLineProto * stuff->height;
- lengthProto = lenPerProto * Ones(stuff->planeMask &
- (plane | (plane - 1)));
-#else
- lenPer = PixmapBytePad(stuff->width, 1) * stuff->height;
- plane = ((Mask)1) << (pDraw->depth - 1);
- /* only planes asked for */
- length = lenPer * Ones(stuff->planeMask & (plane | (plane - 1)));
-#endif
- }
-
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- VERIFY_SHMSIZE(shmdesc, stuff->offset, lengthProto, client);
- xgi.size = lengthProto;
-#else
- VERIFY_SHMSIZE(shmdesc, stuff->offset, length, client);
- xgi.size = length;
-#endif
-
- if (length == 0)
- {
- /* nothing to do */
- }
- else if (stuff->format == ZPixmap)
- {
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- /* check for protocol/server padding differences.
- */
- if ((widthBytesLine != widthBytesLineProto) ||
- ((unsigned long)shmdesc->addr + stuff->offset & (sizeof(long)-1)))
- {
- /* temp stuff for 64 bit alignment stuff */
- register char * bufPtr, * protoPtr;
- register int i;
-
- if(!(tmpImage = (char *) ALLOCATE_LOCAL(length)))
- return (BadAlloc);
- tmpAlloced = 1;
-
- (*pDraw->pScreen->GetImage)(pDraw, stuff->x, stuff->y,
- stuff->width, stuff->height,
- stuff->format, stuff->planeMask,
- tmpImage);
-
- /* for 64-bit server, convert image to pad to 32 bits
- */
- bzero(shmdesc->addr + stuff->offset,lengthProto);
-
- for (i=0,bufPtr=tmpImage,protoPtr=shmdesc->addr + stuff->offset;
- i < stuff->height;
- bufPtr += widthBytesLine,protoPtr += widthBytesLineProto,
- i++)
- bcopy(bufPtr,protoPtr,widthBytesLineProto);
- }
- else
- {
- (*pDraw->pScreen->GetImage)(pDraw, stuff->x, stuff->y,
- stuff->width, stuff->height,
- stuff->format, stuff->planeMask,
- shmdesc->addr + stuff->offset);
- }
-#else
- (*pDraw->pScreen->GetImage)(pDraw, stuff->x, stuff->y,
- stuff->width, stuff->height,
- stuff->format, stuff->planeMask,
- shmdesc->addr + stuff->offset);
-#endif
- }
- else
- {
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- /* check for protocol/server padding differences.
- */
- if ((widthBytesLine != widthBytesLineProto) ||
- ((unsigned long)shmdesc->addr + stuff->offset &
- (sizeof(long)-1)))
- {
- if(!(tmpImage = (char *) ALLOCATE_LOCAL(length)))
- return (BadAlloc);
- tmpAlloced = 1;
- }
-#endif
-
- length = stuff->offset;
- for (; plane; plane >>= 1)
- {
- if (stuff->planeMask & plane)
- {
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- if ((widthBytesLine != widthBytesLineProto) ||
- ((unsigned long)shmdesc->addr + stuff->offset &
- (sizeof(long)-1)))
- {
- /* get image for each plane.
- */
- (*pDraw->pScreen->GetImage)(pDraw,
- stuff->x, stuff->y,
- stuff->width, stuff->height,
- stuff->format, plane,
- tmpImage);
-
- /* for 64-bit server, convert image to pad to 32 bits */
- bzero(shmdesc->addr+length, widthBytesLine);
- bcopy(tmpImage, shmdesc->addr+length, widthBytesLineProto);
- /* increment length */
- length += lenPerProto;
- }
- else /* no diff between protocol and server */
- {
- (*pDraw->pScreen->GetImage)(pDraw,
- stuff->x, stuff->y,
- stuff->width, stuff->height,
- stuff->format, plane,
- shmdesc->addr + length);
- length += lenPer;
- }
-#else
- (*pDraw->pScreen->GetImage)(pDraw,
- stuff->x, stuff->y,
- stuff->width, stuff->height,
- stuff->format, plane,
- shmdesc->addr + length);
- length += lenPer;
-#endif
- }
- }
- }
-
- if (client->swapped) {
- swaps(&xgi.sequenceNumber, n);
- swapl(&xgi.length, n);
- swapl(&xgi.visual, n);
- swapl(&xgi.size, n);
- }
- WriteToClient(client, sizeof(xShmGetImageReply), (char *)&xgi);
-
-#ifdef INTERNAL_VS_EXTERNAL_PADDING
- if (tmpAlloced)
- DEALLOCATE_LOCAL(tmpImage);
-#endif
-
- return(client->noClientException);
-}
-
-static PixmapPtr
-fbShmCreatePixmap (pScreen, width, height, depth, addr)
- ScreenPtr pScreen;
- int width;
- int height;
- int depth;
- char *addr;
-{
- register PixmapPtr pPixmap;
-
- pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, pScreen->rootDepth);
- if (!pPixmap)
- return NullPixmap;
-
- if (!(*pScreen->ModifyPixmapHeader)(pPixmap, width, height, depth,
- /*XXX*/depth, PixmapBytePad(width, depth), (pointer)addr))
- return NullPixmap;
- return pPixmap;
-}
-
-static int
-ProcShmCreatePixmap(client)
- register ClientPtr client;
-{
- PixmapPtr pMap;
- register DrawablePtr pDraw;
- DepthPtr pDepth;
- register int i;
- ShmDescPtr shmdesc;
- REQUEST(xShmCreatePixmapReq);
-
- REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
- client->errorValue = stuff->pid;
- if (!sharedPixmaps)
- return BadImplementation;
- LEGAL_NEW_RESOURCE(stuff->pid, client);
- VERIFY_GEOMETRABLE(pDraw, stuff->drawable, client);
- VERIFY_SHMPTR(stuff->shmseg, stuff->offset, TRUE, shmdesc, client);
- if (!stuff->width || !stuff->height)
- {
- client->errorValue = 0;
- return BadValue;
- }
- if (stuff->depth != 1)
- {
- pDepth = pDraw->pScreen->allowedDepths;
- for (i=0; i<pDraw->pScreen->numDepths; i++, pDepth++)
- if (pDepth->depth == stuff->depth)
- goto CreatePmap;
- client->errorValue = stuff->depth;
- return BadValue;
- }
-CreatePmap:
- VERIFY_SHMSIZE(shmdesc, stuff->offset,
- PixmapBytePad(stuff->width, stuff->depth) * stuff->height,
- client);
- pMap = (*shmFuncs[pDraw->pScreen->myNum]->CreatePixmap)(
- pDraw->pScreen, stuff->width,
- stuff->height, stuff->depth,
- shmdesc->addr + stuff->offset);
- if (pMap)
- {
- pMap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
- pMap->drawable.id = stuff->pid;
- if (AddResource(stuff->pid, RT_PIXMAP, (pointer)pMap))
- {
- shmdesc->refcnt++;
- if (AddResource(stuff->pid, ShmPixType, (pointer)shmdesc))
- return(client->noClientException);
- FreeResource(stuff->pid, RT_NONE);
- }
- }
- return (BadAlloc);
-}
-
-static int
-ProcShmDispatch (client)
- register ClientPtr client;
-{
- REQUEST(xReq);
- switch (stuff->data)
- {
- case X_ShmQueryVersion:
- return ProcShmQueryVersion(client);
- case X_ShmAttach:
- return ProcShmAttach(client);
- case X_ShmDetach:
- return ProcShmDetach(client);
- case X_ShmPutImage:
- return ProcShmPutImage(client);
- case X_ShmGetImage:
- return ProcShmGetImage(client);
- case X_ShmCreatePixmap:
- return ProcShmCreatePixmap(client);
- default:
- return BadRequest;
- }
-}
-
-static void
-SShmCompletionEvent(from, to)
- xShmCompletionEvent *from, *to;
-{
- to->type = from->type;
- cpswaps(from->sequenceNumber, to->sequenceNumber);
- cpswapl(from->drawable, to->drawable);
- cpswaps(from->minorEvent, to->minorEvent);
- to->majorEvent = from->majorEvent;
- cpswapl(from->shmseg, to->shmseg);
- cpswapl(from->offset, to->offset);
-}
-
-static int
-SProcShmQueryVersion(client)
- register ClientPtr client;
-{
- register int n;
- REQUEST(xShmQueryVersionReq);
-
- swaps(&stuff->length, n);
- return ProcShmQueryVersion(client);
-}
-
-static int
-SProcShmAttach(client)
- ClientPtr client;
-{
- register int n;
- REQUEST(xShmAttachReq);
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xShmAttachReq);
- swapl(&stuff->shmseg, n);
- swapl(&stuff->shmid, n);
- return ProcShmAttach(client);
-}
-
-static int
-SProcShmDetach(client)
- ClientPtr client;
-{
- register int n;
- REQUEST(xShmDetachReq);
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xShmDetachReq);
- swapl(&stuff->shmseg, n);
- return ProcShmDetach(client);
-}
-
-static int
-SProcShmPutImage(client)
- ClientPtr client;
-{
- register int n;
- REQUEST(xShmPutImageReq);
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xShmPutImageReq);
- swapl(&stuff->drawable, n);
- swapl(&stuff->gc, n);
- swaps(&stuff->totalWidth, n);
- swaps(&stuff->totalHeight, n);
- swaps(&stuff->srcX, n);
- swaps(&stuff->srcY, n);
- swaps(&stuff->srcWidth, n);
- swaps(&stuff->srcHeight, n);
- swaps(&stuff->dstX, n);
- swaps(&stuff->dstY, n);
- swapl(&stuff->shmseg, n);
- swapl(&stuff->offset, n);
- return ProcShmPutImage(client);
-}
-
-static int
-SProcShmGetImage(client)
- ClientPtr client;
-{
- register int n;
- REQUEST(xShmGetImageReq);
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xShmGetImageReq);
- swapl(&stuff->drawable, n);
- swaps(&stuff->x, n);
- swaps(&stuff->y, n);
- swaps(&stuff->width, n);
- swaps(&stuff->height, n);
- swapl(&stuff->planeMask, n);
- swapl(&stuff->shmseg, n);
- swapl(&stuff->offset, n);
- return ProcShmGetImage(client);
-}
-
-static int
-SProcShmCreatePixmap(client)
- ClientPtr client;
-{
- register int n;
- REQUEST(xShmCreatePixmapReq);
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
- swapl(&stuff->drawable, n);
- swaps(&stuff->width, n);
- swaps(&stuff->height, n);
- swapl(&stuff->shmseg, n);
- swapl(&stuff->offset, n);
- return ProcShmCreatePixmap(client);
-}
-
-static int
-SProcShmDispatch (client)
- register ClientPtr client;
-{
- REQUEST(xReq);
- switch (stuff->data)
- {
- case X_ShmQueryVersion:
- return SProcShmQueryVersion(client);
- case X_ShmAttach:
- return SProcShmAttach(client);
- case X_ShmDetach:
- return SProcShmDetach(client);
- case X_ShmPutImage:
- return SProcShmPutImage(client);
- case X_ShmGetImage:
- return SProcShmGetImage(client);
- case X_ShmCreatePixmap:
- return SProcShmCreatePixmap(client);
- default:
- return BadRequest;
- }
-}
projects / rdpsrv / blobdiff