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/*
* Copyright © 2003 Keith Packard
*
* 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, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _SHMINT_H_
#define _SHMINT_H_
#define _XSHM_SERVER_
#include <X11/extensions/shmstr.h>
#include "screenint.h"
#include "pixmap.h"
#include "gc.h"
#ifndef ShmNumberRequests
#define ShmNumberRequests (X_ShmCreatePixmap + 1)
#endif
typedef struct _ShmDesc {
struct _ShmDesc *next;
int shmid;
int refcnt;
char *addr;
Bool writable;
unsigned long size;
} ShmDescRec, *ShmDescPtr;
extern unsigned char ShmReqCode;
extern int ShmCompletionCode;
extern int BadShmSegCode;
extern RESTYPE ShmSegType;
#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; \
} \
}
void
ShmRegisterFuncs(ScreenPtr pScreen, ShmFuncsPtr funcs);
void
ShmRegisterFbFuncs(ScreenPtr pScreen);
#ifdef PANORAMIX
void PanoramiXShmInit (void);
void PanoramiXShmReset (void);
#endif
#endif /* _SHMINT_H_ */
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