From e5941b2ce963a9175e918029cb6973a7265976e2 Mon Sep 17 00:00:00 2001
From: Azat Khuzhin <azat@libevent.org>
Date: Tue, 16 May 2023 21:16:33 +0200
Subject: [PATCH] Drop unused le_ssl_ops::err_is_ok

It is not used anymore since errors are ignored if some progress had
been done.
---
 bufferevent_mbedtls.c | 6 ------
 bufferevent_openssl.c | 8 --------
 ssl-compat.h          | 1 -
 3 files changed, 15 deletions(-)

diff --git a/bufferevent_mbedtls.c b/bufferevent_mbedtls.c
index 765d00be..b0e960fa 100644
--- a/bufferevent_mbedtls.c
+++ b/bufferevent_mbedtls.c
@@ -136,11 +136,6 @@ mbedtls_is_want_write(int err)
 {
 	return err == MBEDTLS_ERR_SSL_WANT_WRITE;
 }
-static int mbedtls_err_is_ok(int err)
-{
-	/* What mbedtls_ssl_read() returns when the we can proceed existing data */
-	return err == 0;
-}
 
 static evutil_socket_t
 be_mbedtls_get_fd(void *ssl)
@@ -329,7 +324,6 @@ static struct le_ssl_ops le_mbedtls_ops = {
 	mbedtls_handshake_is_ok,
 	mbedtls_is_want_read,
 	mbedtls_is_want_write,
-	mbedtls_err_is_ok,
 	be_mbedtls_get_fd,
 	be_mbedtls_bio_set_fd,
 	(void (*)(struct bufferevent_ssl *))mbedtls_set_ssl_noops,
diff --git a/bufferevent_openssl.c b/bufferevent_openssl.c
index 4ef3925a..f5d0808c 100644
--- a/bufferevent_openssl.c
+++ b/bufferevent_openssl.c
@@ -345,13 +345,6 @@ SSL_handshake_is_ok(int err)
 	return err == 1;
 }
 
-static int
-SSL_err_is_ok(int err)
-{
-	/* What SSL_read() returns when the we can proceed existing data */
-	return err == SSL_ERROR_ZERO_RETURN;
-}
-
 static int
 SSL_is_want_read(int err)
 {
@@ -424,7 +417,6 @@ static struct le_ssl_ops le_openssl_ops = {
 	SSL_handshake_is_ok,
 	SSL_is_want_read,
 	SSL_is_want_write,
-	SSL_err_is_ok,
 	(int (*)(void *))be_openssl_get_fd,
 	be_openssl_bio_set_fd,
 	init_bio_counts,
diff --git a/ssl-compat.h b/ssl-compat.h
index 146fdaf3..a556f4c0 100644
--- a/ssl-compat.h
+++ b/ssl-compat.h
@@ -23,7 +23,6 @@ struct le_ssl_ops {
 	int (*handshake_is_ok)(int err);
 	int (*err_is_want_read)(int err);
 	int (*err_is_want_write)(int err);
-	int (*err_is_ok)(int err);
 	evutil_socket_t (*get_fd)(void *ssl);
 	int (*bio_set_fd)(struct bufferevent_ssl *ssl, evutil_socket_t fd);
 	void (*init_bio_counts)(struct bufferevent_ssl *bev);