On 32-bit x86, add more strategies for the syscall mechanism. #979
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By default, rustix uses `libc` to read aux records, to get the sysinfo information needed to locate the vsyscall function. If that's disabled, add more fallback paths: Add a way to use `PR_GET_AUXV` even when "alloc" is not available, by using a statically-sized buffer and being prepared to proceed to the next fallback if the buffer isn't big enough. And, if `PR_GET_AUXV` and /proc/self/auxv both fail, fall back to using `int 0x80`.
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This is released in rustix 0.38.29. |
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By default, rustix uses
libcto read aux records, to get the sysinfo information needed to locate the vsyscall function. If that's disabled, add more fallback paths:Add a way to use
PR_GET_AUXVeven when "alloc" is not available, by using a statically-sized buffer and being prepared to proceed to the next fallback if the buffer isn't big enough.And, if
PR_GET_AUXVand /proc/self/auxv both fail, fall back to usingint 0x80.