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xace: fix up access modes in dixLookupDrawable calls from dri2.

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Referencing a screen through a drawable only requires GetAttr access.
Treat dri2 drawables as child windows (Add/Remove access).
Treat getting buffers as intent to read/write the drawable.

Signed-off-by: Eamon Walsh <ewalsh@tycho.nsa.gov>
This commit is contained in:
Eamon Walsh 2009-08-28 22:52:48 -04:00
parent 0f3a64c3a5
commit 24716b9254
1 changed files with 16 additions and 9 deletions
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25
hw/xfree86/dri2/dri2ext.c
View File

@ -53,10 +53,10 @@ static ExtensionEntry *dri2Extension;
static RESTYPE dri2DrawableRes;
static Bool
validDrawable(ClientPtr client, XID drawable,
validDrawable(ClientPtr client, XID drawable, Mask access_mode,
DrawablePtr *pDrawable, int *status)
{
*status = dixLookupDrawable(pDrawable, drawable, client, 0, DixReadAccess);
*status = dixLookupDrawable(pDrawable, drawable, client, 0, access_mode);
if (*status != Success) {
client->errorValue = drawable;
return FALSE;
@ -105,7 +105,8 @@ ProcDRI2Connect(ClientPtr client)
const char *deviceName;
REQUEST_SIZE_MATCH(xDRI2ConnectReq);
if (!validDrawable(client, stuff->window, &pDraw, &status))
if (!validDrawable(client, stuff->window, DixGetAttrAccess,
&pDraw, &status))
return status;
rep.type = X_Reply;
@ -140,7 +141,8 @@ ProcDRI2Authenticate(ClientPtr client)
int status;
REQUEST_SIZE_MATCH(xDRI2AuthenticateReq);
if (!validDrawable(client, stuff->window, &pDraw, &status))
if (!validDrawable(client, stuff->window, DixGetAttrAccess,
&pDraw, &status))
return status;
rep.type = X_Reply;
@ -161,7 +163,8 @@ ProcDRI2CreateDrawable(ClientPtr client)
REQUEST_SIZE_MATCH(xDRI2CreateDrawableReq);
if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
if (!validDrawable(client, stuff->drawable, DixAddAccess,
&pDrawable, &status))
return status;
status = DRI2CreateDrawable(pDrawable);
@ -184,7 +187,8 @@ ProcDRI2DestroyDrawable(ClientPtr client)
int status;
REQUEST_SIZE_MATCH(xDRI2DestroyDrawableReq);
if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
if (!validDrawable(client, stuff->drawable, DixRemoveAccess,
&pDrawable, &status))
return status;
FreeResourceByType(stuff->drawable, dri2DrawableRes, FALSE);
@ -250,7 +254,8 @@ ProcDRI2GetBuffers(ClientPtr client)
unsigned int *attachments;
REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * 4);
if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
&pDrawable, &status))
return status;
attachments = (unsigned int *) &stuff[1];
@ -273,7 +278,8 @@ ProcDRI2GetBuffersWithFormat(ClientPtr client)
unsigned int *attachments;
REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * (2 * 4));
if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
&pDrawable, &status))
return status;
attachments = (unsigned int *) &stuff[1];
@ -296,7 +302,8 @@ ProcDRI2CopyRegion(ClientPtr client)
REQUEST_SIZE_MATCH(xDRI2CopyRegionReq);
if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
if (!validDrawable(client, stuff->drawable, DixWriteAccess,
&pDrawable, &status))
return status;
VERIFY_REGION(pRegion, stuff->region, client, DixReadAccess);