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Diffstat (limited to 'xorg-server/dbe')
-rw-r--r--xorg-server/dbe/dbe.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/xorg-server/dbe/dbe.c b/xorg-server/dbe/dbe.c
index 475ba4c18..c19f4a47f 100644
--- a/xorg-server/dbe/dbe.c
+++ b/xorg-server/dbe/dbe.c
@@ -450,18 +450,21 @@ ProcDbeSwapBuffers(ClientPtr client)
DbeSwapInfoPtr swapInfo;
xDbeSwapInfo *dbeSwapInfo;
int error;
- register int i, j;
- int nStuff;
+ unsigned int i, j;
+ unsigned int nStuff;
+ int nStuff_i; /* DDX API requires int for nStuff */
REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
nStuff = stuff->n; /* use local variable for performance. */
if (nStuff == 0) {
+ REQUEST_SIZE_MATCH(xDbeSwapBuffersReq);
return Success;
}
if (nStuff > UINT32_MAX / sizeof(DbeSwapInfoRec))
return BadAlloc;
+ REQUEST_FIXED_SIZE(xDbeSwapBuffersReq, nStuff * sizeof(xDbeSwapInfo));
/* Get to the swap info appended to the end of the request. */
dbeSwapInfo = (xDbeSwapInfo *) &stuff[1];
@@ -525,9 +528,10 @@ ProcDbeSwapBuffers(ClientPtr client)
* could deal with cross-screen synchronization.
*/
- while (nStuff > 0) {
+ nStuff_i = nStuff;
+ while (nStuff_i > 0) {
pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(swapInfo[0].pWindow);
- error = (*pDbeScreenPriv->SwapBuffers) (client, &nStuff, swapInfo);
+ error = (*pDbeScreenPriv->SwapBuffers) (client, &nStuff_i, swapInfo);
if (error != Success) {
free(swapInfo);
return error;
@@ -912,13 +916,16 @@ static int
SProcDbeSwapBuffers(ClientPtr client)
{
REQUEST(xDbeSwapBuffersReq);
- register int i;
+ unsigned int i;
xDbeSwapInfo *pSwapInfo;
swaps(&stuff->length);
REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
swapl(&stuff->n);
+ if (stuff->n > UINT32_MAX / sizeof(DbeSwapInfoRec))
+ return BadAlloc;
+ REQUEST_FIXED_SIZE(xDbeSwapBuffersReq, stuff->n * sizeof(xDbeSwapInfo));
if (stuff->n != 0) {
pSwapInfo = (xDbeSwapInfo *) stuff + 1;