[openssl/openssl] 1b025e: Allow `getentropy` for Emscripten

  Branch: refs/heads/openssl-3.5
  Home:   https://github.com/openssl/openssl
  Commit: 1b025efdcb76643323e9efb347896d12dfdc6291
      https://github.com/openssl/openssl/commit/1b025efdcb76643323e9efb347896d12dfdc6291
  Author: Steven WdV <[email protected]>
  Date:   2026-07-08 (Wed, 08 Jul 2026)

  Changed paths:
    M providers/implementations/rands/seeding/rand_unix.c

  Log Message:
  -----------
  Allow `getentropy` for Emscripten

Usually Emscripten emulates `/dev/urandom`, but in some cases,
like with `-sNODERAWFS`, it doesn't. This means that on non-Unix platforms,
where `/dev/urandom` does not exist on the host, OpenSSL will fail to seed
its PRNG. This fixes that by instead using the POSIX function it
implements, like which was already done for WASI.

See https://github.com/emscripten-core/emscripten/issues/9628#issuecomment-4892658766 for more context.

CLA: trivial

Reviewed-by: Kurt Roeckx <[email protected]>
Reviewed-by: Daniel Kubec <[email protected]>
Reviewed-by: Paul Dale <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Wed Jul  8 17:50:39 2026
(Merged from https://github.com/openssl/openssl/pull/31882)

(cherry picked from commit dc219a04088d08de7df5afdb14263b3e9a4c7915)



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