Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
samples: seccomp: Use __BYTE_ORDER__
Use the compiler-defined __BYTE_ORDER__ instead of the libc-defined
__BYTE_ORDER for consistency.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211026010831.748682-5-iii@linux.ibm.com
authored by
Ilya Leoshkevich
and committed by
Andrii Nakryiko
14e6cac7
06fca841
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samples/seccomp/bpf-helper.h
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samples/seccomp/bpf-helper.h
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#define EXPAND(...) __VA_ARGS__
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/* Ensure that we load the logically correct offset. */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define LO_ARG(idx) offsetof(struct seccomp_data, args[(idx)])
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define LO_ARG(idx) offsetof(struct seccomp_data, args[(idx)]) + sizeof(__u32)
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#else
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#error "Unknown endianness"
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#elif __BITS_PER_LONG == 64
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/* Ensure that we load the logically correct offset. */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define ENDIAN(_lo, _hi) _lo, _hi
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#define HI_ARG(idx) offsetof(struct seccomp_data, args[(idx)]) + sizeof(__u32)
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define ENDIAN(_lo, _hi) _hi, _lo
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#define HI_ARG(idx) offsetof(struct seccomp_data, args[(idx)])
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#endif