Add limited support for WebAssembly WASI target

CLA: trivial Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from #21344)
openssl · Jul 6, 2023 · d88a0f5 · d88a0f5
1 parent 3e76b38
commit d88a0f5
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diff --git a/crypto/bio/bss_log.c b/crypto/bio/bss_log.c
@@ -24,6 +24,8 @@
 
 #if defined(OPENSSL_SYS_WINCE)
 #elif defined(OPENSSL_SYS_WIN32)
+#elif defined(__wasi__)
+# define NO_SYSLOG
 #elif defined(OPENSSL_SYS_VMS)
 # include <opcdef.h>
 # include <descrip.h>

diff --git a/providers/implementations/rands/seeding/rand_unix.c b/providers/implementations/rands/seeding/rand_unix.c
@@ -395,6 +395,10 @@ static ssize_t syscall_random(void *buf, size_t buflen)
 #  elif (defined(__DragonFly__)  && __DragonFly_version >= 500700) \
      || (defined(__NetBSD__) && __NetBSD_Version >= 1000000000)
     return getrandom(buf, buflen, 0);
+#  elif defined(__wasi__)
+    if (getentropy(buf, buflen) == 0)
+      return (ssize_t)buflen;
+    return -1;
 #  else
     errno = ENOSYS;
     return -1;