dbg

Xext/shm.c

@@ -920,6 +920,8 @@ ProcPanoramiXShmGetImage(ClientPtr client)
 static int
 ProcPanoramiXShmCreatePixmap(ClientPtr client)
 {
+    fprintf(stderr, "ProcPanoramiXShmCreatePixmap\n");
+
     ScreenPtr pScreen = NULL;
     PixmapPtr pMap = NULL;
     DrawablePtr pDraw;
@@ -1065,10 +1067,17 @@ ProcShmCreatePixmap(ClientPtr client)
     unsigned int width, height, depth;
     unsigned long size;
 
+    fprintf(stderr, "ProcShmCreatePixmap\n");
+
     REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
     client->errorValue = stuff->pid;
-    if (!sharedPixmaps)
+    if (!sharedPixmaps) {
+        fprintf(stderr, "ProcShmCreatePixmap: no shared pixmaps\n");
         return BadImplementation;
+    }
+
+    fprintf(stderr, "ProcShmCreatePixmap: supporting shared pixmaps\n");
+
     LEGAL_NEW_RESOURCE(stuff->pid, client);
     rc = dixLookupDrawable(&pDraw, stuff->drawable, client, M_ANY,
                            DixGetAttrAccess);
@@ -1077,34 +1086,48 @@ ProcShmCreatePixmap(ClientPtr client)
 
     VERIFY_SHMPTR(stuff->shmseg, stuff->offset, TRUE, shmdesc, client);
 
+    fprintf(stderr, "ProcShmCreatePixmap: 3\n");
+
     width = stuff->width;
     height = stuff->height;
     depth = stuff->depth;
     if (!width || !height || !depth) {
         client->errorValue = 0;
+        fprintf(stderr, "ProcShmCreatePixmap: broken dims %d %d %d\n", width, height, depth);
         return BadValue;
     }
-    if (width > 32767 || height > 32767)
+    if (width > 32767 || height > 32767) {
+        fprintf(stderr, "ProcShmCreatePixmap: out of memory %d %d %d\n", width, height, depth);
         return BadAlloc;
+    }
 
     if (stuff->depth != 1) {
         pDepth = pDraw->pScreen->allowedDepths;
-        for (i = 0; i < pDraw->pScreen->numDepths; i++, pDepth++)
+        for (i = 0; i < pDraw->pScreen->numDepths; i++, pDepth++) {
+            fprintf(stderr, "ProcShmCreatePixmap() trying depth: have=%d want=%d\n", pDepth->depth, stuff->depth);
             if (pDepth->depth == stuff->depth)
                 goto CreatePmap;
+        }
         client->errorValue = stuff->depth;
+        fprintf(stderr, "ProcShmCreatePixmap: not allowed screen depth %d %d %d\n", width, height, depth);
         return BadValue;
     }
 
  CreatePmap:
     size = PixmapBytePad(width, depth) * height;
     if (sizeof(size) == 4 && BitsPerPixel(depth) > 8) {
-        if (size < width * height)
+        if (size < width * height) {
+            fprintf(stderr, "shm stoo small\n");
             return BadAlloc;
         }
+    }
     /* thankfully, offset is unsigned */
-    if (stuff->offset + size < size)
+    if (stuff->offset + size < size) {
+        fprintf(stderr, "out of segment\n");
         return BadAlloc;
+    }
+
+    fprintf(stderr, "4\n");
 
     VERIFY_SHMSIZE(shmdesc, stuff->offset, size, client);
     screen_priv = ShmGetScreenPriv(pDraw->pScreen);
@@ -1112,10 +1135,13 @@ ProcShmCreatePixmap(ClientPtr client)
                                                    stuff->height, stuff->depth,
                                                    shmdesc->addr +
                                                    stuff->offset);
+    fprintf(stderr, "called shmfuncs->CreatePixmap\n");
     if (pMap) {
+        fprintf(stderr, "got pMap\n");
         rc = XaceHookResourceAccess(client, stuff->pid, X11_RESTYPE_PIXMAP,
                       pMap, X11_RESTYPE_NONE, NULL, DixCreateAccess);
         if (rc != Success) {
+            fprintf(stderr, "xace denied\n");
             dixDestroyPixmap(pMap, 0);
             return rc;
         }
@@ -1124,9 +1150,12 @@ ProcShmCreatePixmap(ClientPtr client)
         pMap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
         pMap->drawable.id = stuff->pid;
         if (AddResource(stuff->pid, X11_RESTYPE_PIXMAP, (void *) pMap)) {
+            fprintf(stderr, "CreatePixmap() Success\n");
             return Success;
         }
+        fprintf(stderr, "failed adding resource\n");
     }
+    fprintf(stderr, "shmfuncs->CreatePixmap() failed\n");
     return BadAlloc;
 }
 
@@ -1335,6 +1364,8 @@ ProcShmCreateSegment(ClientPtr client)
 static int
 ProcShmDispatch(ClientPtr client)
 {
+    fprintf(stderr, "ProcShmDispatch\n");
+
     REQUEST(xReq);
 
     if (stuff->data == X_ShmQueryVersion)

hw/xnest/Display.c

@@ -91,6 +91,8 @@ xnestOpenDisplay(int argc, char *argv[])
     if (xnestNumVisuals == 0 || xnestVisuals == NULL)
         FatalError("Unable to find any visuals.\n");
 
+    fprintf(stderr, "got %d visuals\n", xnestNumVisuals);
+
     if (xnestUserDefaultClass || xnestUserDefaultDepth) {
         xnestDefaultVisualIndex = UNDEFINED;
         for (i = 0; i < xnestNumVisuals; i++)
@@ -143,14 +145,15 @@ xnestOpenDisplay(int argc, char *argv[])
         xnestDefaultDrawables[i] = None;
 
     for (i = 0; i < xnestNumPixmapFormats; i++)
-        for (j = 0; j < xnestNumDepths; j++)
+        for (j = 0; j < xnestNumDepths; j++) {
+            fprintf(stderr, "pixfmt #%d depth #%d: xnestDepth=%d\n", i, j, xnestDepths[j]);
             if (xnestPixmapFormats[i].depth == 1 ||
                 xnestPixmapFormats[i].depth == xnestDepths[j]) {
                 xnestDefaultDrawables[xnestPixmapFormats[i].depth] =
                     XCreatePixmap(xnestDisplay, DefaultRootWindow(xnestDisplay),
                                   1, 1, xnestPixmapFormats[i].depth);
             }
-
+        }
     xnestBitmapGC = XCreateGC(xnestDisplay, xnestDefaultDrawables[1], 0L, NULL);
 
     if (!(xnestUserGeometry & XValue))

hw/xnest/Screen.c

@@ -173,7 +173,10 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
     depths[0].vids = (VisualID *) malloc(MAXVISUALSPERDEPTH * sizeof(VisualID));
     numDepths = 1;
 
+    fprintf(stderr, "xnestNumVisuals=%d\n", xnestNumVisuals);
+
     for (i = 0; i < xnestNumVisuals; i++) {
+        fprintf(stderr, "visual #%d planes=%d\n", i, xnestVisuals[i].depth);
         visuals[numVisuals].class = xnestVisuals[i].class;
         visuals[numVisuals].bitsPerRGBValue = xnestVisuals[i].bits_per_rgb;
         visuals[numVisuals].ColormapEntries = xnestVisuals[i].colormap_size;
@@ -207,6 +210,7 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
         visuals[numVisuals].vid = FakeClientID(0);
 
         depthIndex = UNDEFINED;
+        fprintf(stderr, "OpenScreen: numDepths=%d\n", numDepths);
         for (j = 0; j < numDepths; j++)
             if (depths[j].depth == xnestVisuals[i].depth) {
                 depthIndex = j;
@@ -219,6 +223,7 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
             depths[depthIndex].numVids = 0;
             depths[depthIndex].vids =
                 (VisualID *) malloc(MAXVISUALSPERDEPTH * sizeof(VisualID));
+            fprintf(stderr, "added depth: %d\n", depths[depthIndex].depth);
             numDepths++;
         }
         if (depths[depthIndex].numVids >= MAXVISUALSPERDEPTH) {

hw/xnest/meson.build

@@ -33,7 +33,7 @@ executable(
         libxserver_xi_stubs,
         libxserver_xkb_stubs,
     ],
-    c_args: [ '-DHAVE_XNEST_CONFIG_H', '-DDISABLE_EXT_COMPOSITE', '-DDISABLE_EXT_DPMS', '-DISABLE_EXT_MITSHM' ],
+    c_args: [ '-DHAVE_XNEST_CONFIG_H', '-DDISABLE_EXT_COMPOSITE', '-DDISABLE_EXT_DPMS' ],
     install: true,
 )