File: /usr/include/linux/atmapi.h

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