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Add do-while loops to DIX macros 

This ensures they will behave properly in conditionals and always
require a trailing semicolon.
This commit is contained in:
Demi Marie Obenour 2021-07-20 22:37:26 -04:00
parent d83c84bd9d
commit 5c2592cbb1
1 changed files with 61 additions and 44 deletions
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105
include/dix.h
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@ -54,6 +54,7 @@ SOFTWARE.
#include "cursor.h"
#include "geext.h"
#include "events.h"
#include <dix-config.h>
#include <X11/extensions/XI.h>
#define EARLIER -1
@ -61,60 +62,76 @@ SOFTWARE.
#define LATER 1
#define NullClient ((ClientPtr) 0)
#define REQUEST(type) \
type *stuff = (type *)client->requestBuffer
#define REQUEST(type) \
type * stuff = (type *)client->requestBuffer;
#define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))
#define REQUEST_SIZE_MATCH(req)\
if ((sizeof(req) >> 2) != client->req_len)\
return(BadLength)
#define REQUEST_SIZE_MATCH(req) \
do { \
if ((sizeof(req) >> 2) != client->req_len) \
return(BadLength); \
} while (0)
#define REQUEST_AT_LEAST_SIZE(req) \
if ((sizeof(req) >> 2) > client->req_len )\
return(BadLength)
#define REQUEST_AT_LEAST_SIZE(req) \
do { \
if ((sizeof(req) >> 2) > client->req_len) \
return(BadLength); \
} while (0)
#define REQUEST_AT_LEAST_EXTRA_SIZE(req, extra) \
if (((sizeof(req) + ((uint64_t) extra)) >> 2) > client->req_len ) \
return(BadLength)
#define REQUEST_AT_LEAST_EXTRA_SIZE(req, extra) \
do { \
if (((sizeof(req) + ((uint64_t) (extra))) >> 2) > client->req_len) \
return(BadLength); \
} while (0)
#define REQUEST_FIXED_SIZE(req, n)\
if (((sizeof(req) >> 2) > client->req_len) || \
(((n) >> 2) >= client->req_len) || \
((((uint64_t) sizeof(req) + (n) + 3) >> 2) != (uint64_t) client->req_len)) \
return(BadLength)
#define REQUEST_FIXED_SIZE(req, n) \
do { \
if ((((sizeof(req)) >> 2) > client->req_len) || \
(((n) >> 2) >= client->req_len) || \
((((uint64_t) sizeof(req) + (n) + 3) >> 2) != (uint64_t) client->req_len)) \
return(BadLength); \
} while (0)
#define LEGAL_NEW_RESOURCE(id,client)\
if (!LegalNewID(id,client)) \
{\
client->errorValue = id;\
return BadIDChoice;\
}
#define LEGAL_NEW_RESOURCE(id,client) \
do { \
if (!LegalNewID((id), (client))) { \
(client)->errorValue = (id); \
return BadIDChoice; \
} \
} while (0)
#define VALIDATE_DRAWABLE_AND_GC(drawID, pDraw, mode)\
{\
int tmprc = dixLookupDrawable(&(pDraw), drawID, client, M_ANY, mode);\
if (tmprc != Success)\
return tmprc;\
tmprc = dixLookupGC(&(pGC), stuff->gc, client, DixUseAccess);\
if (tmprc != Success)\
return tmprc;\
if ((pGC->depth != pDraw->depth) || (pGC->pScreen != pDraw->pScreen))\
return BadMatch;\
}\
if (pGC->serialNumber != pDraw->serialNumber)\
ValidateGC(pDraw, pGC);
#define VALIDATE_DRAWABLE_AND_GC(drawID, pDraw, mode) \
do { \
int tmprc = dixLookupDrawable(&(pDraw), drawID, client, M_ANY, mode); \
if (tmprc != Success) \
return tmprc; \
tmprc = dixLookupGC(&(pGC), stuff->gc, client, DixUseAccess); \
if (tmprc != Success) \
return tmprc; \
if ((pGC->depth != pDraw->depth) || (pGC->pScreen != pDraw->pScreen)) \
return BadMatch; \
if (pGC->serialNumber != pDraw->serialNumber) \
ValidateGC(pDraw, pGC); \
} while (0)
#define WriteReplyToClient(pClient, size, pReply) { \
if ((pClient)->swapped) \
(*ReplySwapVector[((xReq *)(pClient)->requestBuffer)->reqType]) \
(pClient, (int)(size), pReply); \
else WriteToClient(pClient, (int)(size), (pReply)); }
#define WriteReplyToClient(pClient, size, pReply) \
do { \
if ((pClient)->swapped) \
(*ReplySwapVector[((xReq *)(pClient)->requestBuffer)->reqType]) \
(pClient, (int)(size), pReply); \
else \
WriteToClient(pClient, (int)(size), (pReply)); \
} while (0)
#define WriteSwappedDataToClient(pClient, size, pbuf) \
if ((pClient)->swapped) \
(*(pClient)->pSwapReplyFunc)(pClient, (int)(size), pbuf); \
else WriteToClient(pClient, (int)(size), (pbuf));
#define WriteSwappedDataToClient(pClient, size, pbuf) \
do { \
if ((pClient)->swapped) \
(*(pClient)->pSwapReplyFunc)(pClient, (int)(size), pbuf); \
else \
WriteToClient(pClient, (int)(size), (pbuf)); \
} while (0)
typedef struct _TimeStamp *TimeStampPtr;