e7188e211a
Unfortunately, io_uring is totally opaque to seccomp, and while currently there are no dangerous operations implemented, there is no guarantee that it remains this way. This means that io_uring should be blocked entirely to ensure that the sandbox is future-proof. This has not been observed to cause issues in practice. Change-Id: I45d3895f95abe1bc103a63969f444c334dbbf50d
19 lines
400 B
Nix
19 lines
400 B
Nix
{ runCommandCC }:
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runCommandCC "io_uring-is-blocked" { } ''
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cat > test.c <<EOF
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#include <errno.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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int main() {
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int res = syscall(SYS_io_uring_setup, 0, NULL);
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return res == -1 && errno == ENOSYS ? 0 : 1;
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}
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EOF
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"$CC" -o test test.c
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if ! ./test; then
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echo "Oh no! io_uring is available!"
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exit 1
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fi
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touch "$out"
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''
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