$ head -1 /etc/release
  OmniOS v11 r151038q

$ cargo run --example probe
    Finished dev [unoptimized + debuginfo] target(s) in 0.04s
     Running `target/debug/examples/probe`
cert_dir: Some("/usr/ssl/certs")
cert_file: Some("/etc/ssl/cacert.pem")

$ head -1 /etc/release
             OpenIndiana Hipster 2021.04 (powered by illumos)

$ cargo run --example probe
    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
     Running `target/debug/examples/probe`
cert_dir: Some("/etc/openssl/certs")
cert_file: Some("/etc/certs/ca-certificates.crt")