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92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/*
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* Copyright © 2003 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _SHMINT_H_
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#define _SHMINT_H_
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#define _XSHM_SERVER_
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#include <X11/extensions/shmstr.h>
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#include "screenint.h"
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#include "pixmap.h"
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#include "gc.h"
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#ifndef ShmNumberRequests
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#define ShmNumberRequests (X_ShmCreatePixmap + 1)
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#endif
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typedef struct _ShmDesc {
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struct _ShmDesc *next;
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int shmid;
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int refcnt;
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char *addr;
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Bool writable;
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unsigned long size;
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} ShmDescRec, *ShmDescPtr;
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extern unsigned char ShmReqCode;
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extern int ShmCompletionCode;
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extern int BadShmSegCode;
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extern RESTYPE ShmSegType;
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#define VERIFY_SHMSEG(shmseg,shmdesc,client) \
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{ \
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shmdesc = (ShmDescPtr)LookupIDByType(shmseg, ShmSegType); \
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if (!shmdesc) \
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{ \
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client->errorValue = shmseg; \
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return BadShmSegCode; \
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} \
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}
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#define VERIFY_SHMPTR(shmseg,offset,needwrite,shmdesc,client) \
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{ \
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VERIFY_SHMSEG(shmseg, shmdesc, client); \
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if ((offset & 3) || (offset > shmdesc->size)) \
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{ \
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client->errorValue = offset; \
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return BadValue; \
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} \
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if (needwrite && !shmdesc->writable) \
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return BadAccess; \
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}
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#define VERIFY_SHMSIZE(shmdesc,offset,len,client) \
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{ \
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if ((offset + len) > shmdesc->size) \
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{ \
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return BadAccess; \
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} \
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}
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void
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ShmRegisterFuncs(ScreenPtr pScreen, ShmFuncsPtr funcs);
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void
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ShmRegisterFbFuncs(ScreenPtr pScreen);
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#ifdef PANORAMIX
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void PanoramiXShmInit (void);
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void PanoramiXShmReset (void);
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#endif
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#endif /* _SHMINT_H_ */
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