30 lines
1.5 KiB
C
30 lines
1.5 KiB
C
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/* SPDX-License-Identifier: MIT */
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#ifndef __NVIF_UNPACK_H__
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#define __NVIF_UNPACK_H__
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#define nvif_unvers(r,d,s,m) ({ \
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void **_data = (d); __u32 *_size = (s); int _ret = (r); \
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if (_ret == -ENOSYS && *_size == sizeof(m)) { \
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*_data = NULL; \
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*_size = _ret = 0; \
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} \
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_ret; \
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})
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#define nvif_unpack(r,d,s,m,vl,vh,x) ({ \
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void **_data = (d); __u32 *_size = (s); \
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int _ret = (r), _vl = (vl), _vh = (vh); \
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if (_ret == -ENOSYS && *_size >= sizeof(m) && \
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(m).version >= _vl && (m).version <= _vh) { \
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*_data = (__u8 *)*_data + sizeof(m); \
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*_size = *_size - sizeof(m); \
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if (_ret = 0, !(x)) { \
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_ret = *_size ? -E2BIG : 0; \
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*_data = NULL; \
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*_size = 0; \
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} \
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} \
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_ret; \
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})
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#endif
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