diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/nxagent/X/NXshm.c.X.original')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/nxagent/X/NXshm.c.X.original | 1310 |
1 files changed, 0 insertions, 1310 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/X/NXshm.c.X.original b/nx-X11/programs/Xserver/hw/nxagent/X/NXshm.c.X.original deleted file mode 100644 index f25bb9b5d..000000000 --- a/nx-X11/programs/Xserver/hw/nxagent/X/NXshm.c.X.original +++ /dev/null @@ -1,1310 +0,0 @@ -/* $XFree86: xc/programs/Xserver/Xext/shm.c,v 3.41 2003/12/17 23:28:56 alanh Exp $ */ -/************************************************************ - -Copyright 1989, 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. - -********************************************************/ - -/* THIS IS NOT AN X CONSORTIUM STANDARD OR AN X PROJECT TEAM SPECIFICATION */ - -/* $Xorg: shm.c,v 1.4 2001/02/09 02:04:33 xorgcvs Exp $ */ - -#define SHM - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <sys/types.h> -#ifndef Lynx -#include <sys/ipc.h> -#include <sys/shm.h> -#else -#include <ipc.h> -#include <shm.h> -#endif -#include <unistd.h> -#include <sys/stat.h> -#define NEED_REPLIES -#define NEED_EVENTS -#include <X11/X.h> -#include <X11/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 <X11/extensions/shmstr.h> -#include <X11/Xfuncproto.h> -#ifdef EXTMODULE -#include "xf86_ansic.h" -#endif - -#ifdef PANORAMIX -#include "panoramiX.h" -#include "panoramiXsrv.h" -#endif - -#include "modinit.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( - pointer /* value */, - XID /* shmseg */ - ); -static void ShmResetProc( - ExtensionEntry * /* extEntry */ - ); -static void SShmCompletionEvent( - xShmCompletionEvent * /* from */, - xShmCompletionEvent * /* to */ - ); - -static Bool ShmDestroyPixmap (PixmapPtr pPixmap); - -static DISPATCH_PROC(ProcShmAttach); -static DISPATCH_PROC(ProcShmCreatePixmap); -static DISPATCH_PROC(ProcShmDetach); -static DISPATCH_PROC(ProcShmDispatch); -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; -int ShmCompletionCode; -int BadShmSegCode; -RESTYPE ShmSegType; -static ShmDescPtr Shmsegs; -static Bool sharedPixmaps; -static int pixmapFormat; -static int shmPixFormat[MAXSCREENS]; -static ShmFuncsPtr shmFuncs[MAXSCREENS]; -static DestroyPixmapProcPtr destroyPixmap[MAXSCREENS]; -#ifdef PIXPRIV -static int shmPixmapPrivate; -#endif -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__) || defined(__CYGWIN__) -#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); - - if (shmid != -1) - { - /* Successful allocation - clean up */ - shmctl(shmid, IPC_RMID, (struct shmid_ds *)NULL); - } - else - { - /* Allocation failed */ - badSysCall = TRUE; - } - signal(SIGSYS, oldHandler); - return(!badSysCall); -} - -#define MUST_CHECK_FOR_SHM_SYSCALL - -#endif - -void -ShmExtensionInit(INITARGS) -{ - ExtensionEntry *extEntry; - int i; - -#ifdef MUST_CHECK_FOR_SHM_SYSCALL - if (!CheckForShmSyscall()) - { - ErrorF("MIT-SHM extension disabled due to lack of kernel support\n"); - return; - } -#endif - - sharedPixmaps = xFalse; - pixmapFormat = 0; - { - 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; - if (sharedPixmaps) - { - for (i = 0; i < screenInfo.numScreens; i++) - { - destroyPixmap[i] = screenInfo.screens[i]->DestroyPixmap; - screenInfo.screens[i]->DestroyPixmap = ShmDestroyPixmap; - } -#ifdef PIXPRIV - shmPixmapPrivate = AllocatePixmapPrivateIndex(); - for (i = 0; i < screenInfo.numScreens; i++) - { - if (!AllocatePixmapPrivate(screenInfo.screens[i], - shmPixmapPrivate, 0)) - return; - } -#endif - } - } - ShmSegType = CreateNewResourceType(ShmDetachSegment); - if (ShmSegType && - (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( - ScreenPtr pScreen, - ShmFuncsPtr funcs) -{ - shmFuncs[pScreen->myNum] = funcs; -} - -void -ShmSetPixmapFormat( - ScreenPtr pScreen, - int format) -{ - shmPixFormat[pScreen->myNum] = format; -} - -static Bool -ShmDestroyPixmap (PixmapPtr pPixmap) -{ - ScreenPtr pScreen = pPixmap->drawable.pScreen; - Bool ret; - if (pPixmap->refcnt == 1) - { - ShmDescPtr shmdesc; -#ifdef PIXPRIV - shmdesc = (ShmDescPtr) pPixmap->devPrivates[shmPixmapPrivate].ptr; -#else - char *base = (char *) pPixmap->devPrivate.ptr; - - if (base != (pointer) (pPixmap + 1)) - { - for (shmdesc = Shmsegs; shmdesc; shmdesc = shmdesc->next) - { - if (shmdesc->addr <= base && base <= shmdesc->addr + shmdesc->size) - break; - } - } - else - shmdesc = 0; -#endif - if (shmdesc) - ShmDetachSegment ((pointer) shmdesc, pPixmap->drawable.id); - } - - pScreen->DestroyPixmap = destroyPixmap[pScreen->myNum]; - ret = (*pScreen->DestroyPixmap) (pPixmap); - destroyPixmap[pScreen->myNum] = pScreen->DestroyPixmap; - pScreen->DestroyPixmap = ShmDestroyPixmap; - return ret; -} - -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); -} - -/* - * Simulate the access() system call for a shared memory segement, - * using the credentials from the client if available - */ -static int -shm_access(ClientPtr client, struct ipc_perm *perm, int readonly) -{ - int uid, gid; - mode_t mask; - - if (LocalClientCred(client, &uid, &gid) != -1) { - - /* User id 0 always gets access */ - if (uid == 0) { - return 0; - } - /* Check the owner */ - if (perm->uid == uid || perm->cuid == uid) { - mask = S_IRUSR; - if (!readonly) { - mask |= S_IWUSR; - } - return (perm->mode & mask) == mask ? 0 : -1; - } - /* Check the group */ - if (perm->gid == gid || perm->cgid == gid) { - mask = S_IRGRP; - if (!readonly) { - mask |= S_IWGRP; - } - return (perm->mode & mask) == mask ? 0 : -1; - } - } - /* Otherwise, check everyone else */ - mask = S_IROTH; - if (!readonly) { - mask |= S_IWOTH; - } - return (perm->mode & mask) == mask ? 0 : -1; -} - -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; - } - - /* The attach was performed with root privs. We must - * do manual checking of access rights for the credentials - * of the client */ - - if (shm_access(client, &(buf.shm_perm), stuff->readOnly) == -1) { - shmdt(shmdesc->addr); - 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, - BitsPerPixel(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); -} - - -#ifdef PANORAMIX -static int -ProcPanoramiXShmPutImage(register ClientPtr client) -{ - int j, result = 0, orig_x, orig_y; - PanoramiXRes *draw, *gc; - Bool sendEvent, isRoot; - - REQUEST(xShmPutImageReq); - REQUEST_SIZE_MATCH(xShmPutImageReq); - - if(!(draw = (PanoramiXRes *)SecurityLookupIDByClass( - client, stuff->drawable, XRC_DRAWABLE, SecurityWriteAccess))) - return BadDrawable; - - if(!(gc = (PanoramiXRes *)SecurityLookupIDByType( - client, stuff->gc, XRT_GC, SecurityReadAccess))) - return BadGC; - - isRoot = (draw->type == XRT_WINDOW) && draw->u.win.root; - - orig_x = stuff->dstX; - orig_y = stuff->dstY; - sendEvent = stuff->sendEvent; - stuff->sendEvent = 0; - FOR_NSCREENS(j) { - if(!j) stuff->sendEvent = sendEvent; - stuff->drawable = draw->info[j].id; - stuff->gc = gc->info[j].id; - if (isRoot) { - stuff->dstX = orig_x - panoramiXdataPtr[j].x; - stuff->dstY = orig_y - panoramiXdataPtr[j].y; - } - result = ProcShmPutImage(client); - if(result != client->noClientException) break; - } - return(result); -} - -static int -ProcPanoramiXShmGetImage(ClientPtr client) -{ - PanoramiXRes *draw; - DrawablePtr drawables[MAXSCREENS]; - DrawablePtr pDraw; - xShmGetImageReply xgi; - ShmDescPtr shmdesc; - int i, x, y, w, h, format; - Mask plane = 0, planemask; - long lenPer = 0, length, widthBytesLine; - Bool isRoot; - - REQUEST(xShmGetImageReq); - - REQUEST_SIZE_MATCH(xShmGetImageReq); - - if ((stuff->format != XYPixmap) && (stuff->format != ZPixmap)) { - client->errorValue = stuff->format; - return(BadValue); - } - - if(!(draw = (PanoramiXRes *)SecurityLookupIDByClass( - client, stuff->drawable, XRC_DRAWABLE, SecurityWriteAccess))) - return BadDrawable; - - if (draw->type == XRT_PIXMAP) - return ProcShmGetImage(client); - - VERIFY_DRAWABLE(pDraw, stuff->drawable, client); - - VERIFY_SHMPTR(stuff->shmseg, stuff->offset, TRUE, shmdesc, client); - - x = stuff->x; - y = stuff->y; - w = stuff->width; - h = stuff->height; - format = stuff->format; - planemask = stuff->planeMask; - - isRoot = (draw->type == XRT_WINDOW) && draw->u.win.root; - - if(isRoot) { - if( /* check for being onscreen */ - x < 0 || x + w > PanoramiXPixWidth || - y < 0 || y + h > PanoramiXPixHeight ) - return(BadMatch); - } else { - if( /* check for being onscreen */ - panoramiXdataPtr[0].x + pDraw->x + x < 0 || - panoramiXdataPtr[0].x + pDraw->x + x + w > PanoramiXPixWidth || - panoramiXdataPtr[0].y + pDraw->y + y < 0 || - panoramiXdataPtr[0].y + pDraw->y + y + h > PanoramiXPixHeight || - /* check for being inside of border */ - x < - wBorderWidth((WindowPtr)pDraw) || - x + w > wBorderWidth((WindowPtr)pDraw) + (int)pDraw->width || - y < -wBorderWidth((WindowPtr)pDraw) || - y + h > wBorderWidth ((WindowPtr)pDraw) + (int)pDraw->height) - return(BadMatch); - } - - drawables[0] = pDraw; - for(i = 1; i < PanoramiXNumScreens; i++) - VERIFY_DRAWABLE(drawables[i], draw->info[i].id, client); - - xgi.visual = wVisual(((WindowPtr)pDraw)); - xgi.type = X_Reply; - xgi.length = 0; - xgi.sequenceNumber = client->sequence; - xgi.depth = pDraw->depth; - - if(format == ZPixmap) { - widthBytesLine = PixmapBytePad(w, pDraw->depth); - length = widthBytesLine * h; - } else { - widthBytesLine = PixmapBytePad(w, 1); - lenPer = widthBytesLine * h; - plane = ((Mask)1) << (pDraw->depth - 1); - length = lenPer * Ones(planemask & (plane | (plane - 1))); - } - - VERIFY_SHMSIZE(shmdesc, stuff->offset, length, client); - xgi.size = length; - - if (length == 0) {/* nothing to do */ } - else if (format == ZPixmap) { - XineramaGetImageData(drawables, x, y, w, h, format, planemask, - shmdesc->addr + stuff->offset, - widthBytesLine, isRoot); - } else { - - length = stuff->offset; - for (; plane; plane >>= 1) { - if (planemask & plane) { - XineramaGetImageData(drawables, x, y, w, h, - format, plane, shmdesc->addr + length, - widthBytesLine, isRoot); - length += lenPer; - } - } - } - - if (client->swapped) { - register int n; - swaps(&xgi.sequenceNumber, n); - swapl(&xgi.length, n); - swapl(&xgi.visual, n); - swapl(&xgi.size, n); - } - WriteToClient(client, sizeof(xShmGetImageReply), (char *)&xgi); - - return(client->noClientException); -} - -static int -ProcPanoramiXShmCreatePixmap( - register ClientPtr client) -{ - ScreenPtr pScreen = NULL; - PixmapPtr pMap = NULL; - DrawablePtr pDraw; - DepthPtr pDepth; - int i, j, result; - ShmDescPtr shmdesc; - REQUEST(xShmCreatePixmapReq); - unsigned int width, height, depth; - unsigned long size; - PanoramiXRes *newPix; - - 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); - - width = stuff->width; - height = stuff->height; - depth = stuff->depth; - if (!width || !height || !depth) - { - client->errorValue = 0; - return BadValue; - } - if (width > 32767 || height > 32767) - return BadAlloc; - - 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: - size = PixmapBytePad(width, depth) * height; - if (sizeof(size) == 4 && BitsPerPixel(depth) > 8) { - if (size < width * height) - return BadAlloc; - /* thankfully, offset is unsigned */ - if (stuff->offset + size < size) - return BadAlloc; - } - - VERIFY_SHMSIZE(shmdesc, stuff->offset, size, client); - - if(!(newPix = (PanoramiXRes *) xalloc(sizeof(PanoramiXRes)))) - return BadAlloc; - - newPix->type = XRT_PIXMAP; - newPix->u.pix.shared = TRUE; - newPix->info[0].id = stuff->pid; - for(j = 1; j < PanoramiXNumScreens; j++) - newPix->info[j].id = FakeClientID(client->index); - - result = (client->noClientException); - - FOR_NSCREENS(j) { - pScreen = screenInfo.screens[j]; - - pMap = (*shmFuncs[j]->CreatePixmap)(pScreen, - stuff->width, stuff->height, stuff->depth, - shmdesc->addr + stuff->offset); - - if (pMap) { -#ifdef PIXPRIV - pMap->devPrivates[shmPixmapPrivate].ptr = (pointer) shmdesc; -#endif - shmdesc->refcnt++; - pMap->drawable.serialNumber = NEXT_SERIAL_NUMBER; - pMap->drawable.id = newPix->info[j].id; - if (!AddResource(newPix->info[j].id, RT_PIXMAP, (pointer)pMap)) { - (*pScreen->DestroyPixmap)(pMap); - result = BadAlloc; - break; - } - } else { - result = BadAlloc; - break; - } - } - - if(result == BadAlloc) { - while(j--) { - (*pScreen->DestroyPixmap)(pMap); - FreeResource(newPix->info[j].id, RT_NONE); - } - xfree(newPix); - } else - AddResource(stuff->pid, XRT_PIXMAP, newPix); - - return result; -} - -#endif - -static int -ProcShmPutImage(client) - register ClientPtr client; -{ - register GCPtr pGC; - register DrawablePtr pDraw; - long length; - 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); - } - else if (stuff->format == XYPixmap) - { - if (pDraw->depth != stuff->depth) - return BadMatch; - length = PixmapBytePad(stuff->totalWidth, 1); - length *= stuff->depth; - } - else if (stuff->format == ZPixmap) - { - if (pDraw->depth != stuff->depth) - return BadMatch; - length = PixmapBytePad(stuff->totalWidth, stuff->depth); - } - else - { - client->errorValue = stuff->format; - return BadValue; - } - - /* - * There's a potential integer overflow in this check: - * VERIFY_SHMSIZE(shmdesc, stuff->offset, length * stuff->totalHeight, - * client); - * the version below ought to avoid it - */ - if (stuff->totalHeight != 0 && - length > (shmdesc->size - stuff->offset)/stuff->totalHeight) { - client->errorValue = stuff->totalWidth; - return BadValue; - } - 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; - } - - 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, - shmdesc->addr + stuff->offset + - (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, - shmdesc->addr + stuff->offset); - - 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); - } - - return (client->noClientException); -} - - - -static int -ProcShmGetImage(client) - register ClientPtr client; -{ - register DrawablePtr pDraw; - long lenPer = 0, length; - Mask plane = 0; - xShmGetImageReply xgi; - ShmDescPtr shmdesc; - int n; - - 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) - { - length = PixmapBytePad(stuff->width, pDraw->depth) * stuff->height; - } - 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))); - } - - VERIFY_SHMSIZE(shmdesc, stuff->offset, length, client); - xgi.size = length; - - if (length == 0) - { - /* nothing to do */ - } - else if (stuff->format == ZPixmap) - { - (*pDraw->pScreen->GetImage)(pDraw, stuff->x, stuff->y, - stuff->width, stuff->height, - stuff->format, stuff->planeMask, - shmdesc->addr + stuff->offset); - } - else - { - - length = stuff->offset; - for (; plane; plane >>= 1) - { - if (stuff->planeMask & plane) - { - (*pDraw->pScreen->GetImage)(pDraw, - stuff->x, stuff->y, - stuff->width, stuff->height, - stuff->format, plane, - shmdesc->addr + length); - length += lenPer; - } - } - } - - 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); - - 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, - BitsPerPixel(depth), PixmapBytePad(width, depth), (pointer)addr)) { - (*pScreen->DestroyPixmap)(pPixmap); - 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); - unsigned int width, height, depth; - unsigned long size; - - 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); - - width = stuff->width; - height = stuff->height; - depth = stuff->depth; - if (!width || !height || !depth) - { - client->errorValue = 0; - return BadValue; - } - if (width > 32767 || height > 32767) - return BadAlloc; - - 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: - size = PixmapBytePad(width, depth) * height; - if (sizeof(size) == 4 && BitsPerPixel(depth) > 8) { - if (size < width * height) - return BadAlloc; - /* thankfully, offset is unsigned */ - if (stuff->offset + size < size) - return BadAlloc; - } - - VERIFY_SHMSIZE(shmdesc, stuff->offset, size, client); - pMap = (*shmFuncs[pDraw->pScreen->myNum]->CreatePixmap)( - pDraw->pScreen, stuff->width, - stuff->height, stuff->depth, - shmdesc->addr + stuff->offset); - if (pMap) - { -#ifdef PIXPRIV - pMap->devPrivates[shmPixmapPrivate].ptr = (pointer) shmdesc; -#endif - shmdesc->refcnt++; - pMap->drawable.serialNumber = NEXT_SERIAL_NUMBER; - pMap->drawable.id = stuff->pid; - if (AddResource(stuff->pid, RT_PIXMAP, (pointer)pMap)) - { - return(client->noClientException); - } - } - 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: -#ifdef PANORAMIX - if ( !noPanoramiXExtension ) - return ProcPanoramiXShmPutImage(client); -#endif - return ProcShmPutImage(client); - case X_ShmGetImage: -#ifdef PANORAMIX - if ( !noPanoramiXExtension ) - return ProcPanoramiXShmGetImage(client); -#endif - return ProcShmGetImage(client); - case X_ShmCreatePixmap: -#ifdef PANORAMIX - if ( !noPanoramiXExtension ) - return ProcPanoramiXShmCreatePixmap(client); -#endif - 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->pid, n); - 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; - } -} |