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libc: INTERPOS_SYS macro for interposed syscalls
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Authored by brooks on Mar 15 2024, 10:49 PM.
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Details

Summary

This macro makes uses the __sys_<foo>_t typedefs from libsys.h to
greatly simplify calling functions in the interposing table.

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rG FreeBSD src repository
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lib/libc/include/libc_private.h
256
257

Did you considered adding vararg args to the INTERPOS_SYS() so that it provides complete syntax for the call, instead of requiring (args) after as independent tokens?

brooks marked 2 inline comments as done.EditedMar 18 2024, 7:42 PM

Technically the var args change requires C23/C++20 for __VA_OPT__, but all the compiler we care about support it regardless of compilation mode (gcc 8+ and clang 12+).

This revision is now accepted and ready to land.Mar 18 2024, 7:54 PM