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