atmapi.h 952 B

123456789101112131415161718192021222324252627282930
  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. /* atmapi.h - ATM API user space/kernel compatibility */
  3. /* Written 1999,2000 by Werner Almesberger, EPFL ICA */
  4. #ifndef _LINUX_ATMAPI_H
  5. #define _LINUX_ATMAPI_H
  6. #if defined(__sparc__) || defined(__ia64__)
  7. /* such alignment is not required on 32 bit sparcs, but we can't
  8. figure that we are on a sparc64 while compiling user-space programs. */
  9. #define __ATM_API_ALIGN __attribute__((aligned(8)))
  10. #else
  11. #define __ATM_API_ALIGN
  12. #endif
  13. /*
  14. * Opaque type for kernel pointers. Note that _ is never accessed. We need
  15. * the struct in order hide the array, so that we can make simple assignments
  16. * instead of being forced to use memcpy. It also improves error reporting for
  17. * code that still assumes that we're passing unsigned longs.
  18. *
  19. * Convention: NULL pointers are passed as a field of all zeroes.
  20. */
  21. typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t;
  22. #endif