1 /* atmapi.h - ATM API user space/kernel compatibility */
2 
3 /* Written 1999,2000 by Werner Almesberger, EPFL ICA */
4 
5 
6 #ifndef _LINUX_ATMAPI_H
7 #define _LINUX_ATMAPI_H
8 
9 #if defined(__sparc__) || defined(__ia64__)
10 /* such alignment is not required on 32 bit sparcs, but we can't
11    figure that we are on a sparc64 while compiling user-space programs. */
12 #define __ATM_API_ALIGN	__attribute__((aligned(8)))
13 #else
14 #define __ATM_API_ALIGN
15 #endif
16 
17 
18 /*
19  * Opaque type for kernel pointers. Note that _ is never accessed. We need
20  * the struct in order hide the array, so that we can make simple assignments
21  * instead of being forced to use memcpy. It also improves error reporting for
22  * code that still assumes that we're passing unsigned longs.
23  *
24  * Convention: NULL pointers are passed as a field of all zeroes.
25  */
26 
27 typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t;
28 
29 #endif
30