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 #ifdef __sparc__
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_kptr_t;
28
29 #endif
30
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