mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Paul Chaignon
0c7ae13069
With commitdacbfc1678("crypto: af_alg - Annotate struct af_alg_iv with __counted_by"), two selftests, test_tag and crypto_sanity, now indirectly rely on the __counted_by macro. On systems with commitdacbfc1678in the installed UAPI headers, the selftests build fails with: In file included from tools/testing/selftests/bpf/prog_tests/crypto_sanity.c:7: /usr/include/linux/if_alg.h:45:22: error: expected ‘:’, ‘,’, ‘;’, ‘}’ or ‘__attribute__’ before ‘__counted_by’ 45 | __u8 iv[] __counted_by(ivlen); | ^~~~~~~~~~~~ This patch fixes it by regenerating stddef.h in tools/include using the instructions from commita778f5d46b("tools/headers: Pull in stddef.h to uapi to fix BPF selftests build in CI"). Fixes:dacbfc1678("crypto: af_alg - Annotate struct af_alg_iv with __counted_by") Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com> Reviewed-by: Alan Maguire <alan.maguire@oracle.com> Tested-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/8da8ef16055aa452d940668ed5359ce54adc6b0b.1777715500.git.paul.chaignon@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _LINUX_STDDEF_H
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#define _LINUX_STDDEF_H
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#ifndef __always_inline
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#define __always_inline __inline__
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#endif
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/* Not all C++ standards support type declarations inside an anonymous union */
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#ifndef __cplusplus
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#define __struct_group_tag(TAG) TAG
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#else
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#define __struct_group_tag(TAG)
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#endif
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/**
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* __struct_group() - Create a mirrored named and anonyomous struct
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*
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* @TAG: The tag name for the named sub-struct (usually empty)
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* @NAME: The identifier name of the mirrored sub-struct
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* @ATTRS: Any struct attributes (usually empty)
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* @MEMBERS: The member declarations for the mirrored structs
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*
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* Used to create an anonymous union of two structs with identical layout
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* and size: one anonymous and one named. The former's members can be used
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* normally without sub-struct naming, and the latter can be used to
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* reason about the start, end, and size of the group of struct members.
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* The named struct can also be explicitly tagged for layer reuse (C only),
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* as well as both having struct attributes appended.
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*/
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#define __struct_group(TAG, NAME, ATTRS, MEMBERS...) \
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union { \
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struct { MEMBERS } ATTRS; \
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struct __struct_group_tag(TAG) { MEMBERS } ATTRS NAME; \
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} ATTRS
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#ifdef __cplusplus
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/* sizeof(struct{}) is 1 in C++, not 0, can't use C version of the macro. */
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#define __DECLARE_FLEX_ARRAY(T, member) \
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T member[0]
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#else
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/**
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* __DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union
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*
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* @TYPE: The type of each flexible array element
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* @NAME: The name of the flexible array member
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*
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* In order to have a flexible array member in a union or alone in a
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* struct, it needs to be wrapped in an anonymous struct with at least 1
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* named member, but that member can be empty.
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*/
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#define __DECLARE_FLEX_ARRAY(TYPE, NAME) \
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struct { \
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struct { } __empty_ ## NAME; \
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TYPE NAME[]; \
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}
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#endif
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#ifndef __counted_by
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#define __counted_by(m)
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#endif
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#ifndef __counted_by_le
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#define __counted_by_le(m)
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#endif
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#ifndef __counted_by_be
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#define __counted_by_be(m)
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#endif
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#ifndef __counted_by_ptr
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#define __counted_by_ptr(m)
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#endif
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#define __kernel_nonstring
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#endif /* _LINUX_STDDEF_H */
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