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
