BIO: Allow third parties to use integers instead of pointers for poll descriptors

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21905)

1 files changed, 4 insertions, 3 deletions

diff --git a/include/openssl/bio.h.in b/include/openssl/bio.h.in
index aa05d7d9cf..735361b17b 100644
--- a/include/openssl/bio.h.in
+++ b/include/openssl/bio.h.in
@@ -387,10 +387,11 @@ typedef struct bio_mmsg_cb_args_st {
 #define BIO_POLL_DESCRIPTOR_CUSTOM_START    8192
 
 typedef struct bio_poll_descriptor_st {
-    int type;
+    uint32_t type;
     union {
-        int     fd;
-        void    *custom;
+        int         fd;
+        void        *custom;
+        uintptr_t   custom_ui;
     } value;
 } BIO_POLL_DESCRIPTOR;