merge revision(s) 63304: [Backport #14713]

io.c: workaround for EPROTOTYPE

	* io.c (internal_write_func, internal_writev_func): retry at
	  unexpected EPROTOTYPE on macOS, to get rid of a kernel bug.
	  [ruby-core:86690] [Bug #14713]

	* ext/socket/init.c (rsock_{sendto,send,write}_blocking): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@63826 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/socket/init.c

@@ -56,6 +56,12 @@ is_socket(int fd)
 }
 #endif
 
+#if defined __APPLE__
+# define do_write_retry(code) do {ret = code;} while (ret == -1 && errno == EPROTOTYPE)
+#else
+# define do_write_retry(code) ret = code
+#endif
+
 VALUE
 rsock_init_sock(VALUE sock, int fd)
 {
@@ -83,8 +89,10 @@ rsock_sendto_blocking(void *data)
 {
     struct rsock_send_arg *arg = data;
     VALUE mesg = arg->mesg;
-    return (VALUE)sendto(arg->fd, RSTRING_PTR(mesg), RSTRING_LEN(mesg),
-                         arg->flags, arg->to, arg->tolen);
+    ssize_t ret;
+    do_write_retry(sendto(arg->fd, RSTRING_PTR(mesg), RSTRING_LEN(mesg),
+			  arg->flags, arg->to, arg->tolen));
+    return (VALUE)ret;
 }
 
 VALUE
@@ -92,8 +100,10 @@ rsock_send_blocking(void *data)
 {
     struct rsock_send_arg *arg = data;
     VALUE mesg = arg->mesg;
-    return (VALUE)send(arg->fd, RSTRING_PTR(mesg), RSTRING_LEN(mesg),
-                       arg->flags);
+    ssize_t ret;
+    do_write_retry(send(arg->fd, RSTRING_PTR(mesg), RSTRING_LEN(mesg),
+			arg->flags));
+    return (VALUE)ret;
 }
 
 struct recvfrom_arg {
@@ -366,10 +376,18 @@ rsock_write_nonblock(VALUE sock, VALUE str, VALUE ex)
 	rb_io_flush(sock);
     }
 
+#ifdef __APPLE__
+  again:
+#endif
     n = (long)send(fptr->fd, RSTRING_PTR(str), RSTRING_LEN(str), MSG_DONTWAIT);
     if (n < 0) {
 	int e = errno;
 
+#ifdef __APPLE__
+	if (e == EPROTOTYPE) {
+	    goto again;
+	}
+#endif
 	if (e == EWOULDBLOCK || e == EAGAIN) {
 	    if (ex == Qfalse) return sym_wait_writable;
 	    rb_readwrite_syserr_fail(RB_IO_WAIT_WRITABLE, e,

io.c

@@ -937,11 +937,18 @@ internal_read_func(void *ptr)
     return read(iis->fd, iis->buf, iis->capa);
 }
 
+#if defined __APPLE__
+# define do_write_retry(code) do {ret = code;} while (ret == -1 && errno == EPROTOTYPE)
+#else
+# define do_write_retry(code) ret = code
+#endif
 static VALUE
 internal_write_func(void *ptr)
 {
     struct io_internal_write_struct *iis = ptr;
-    return write(iis->fd, iis->buf, iis->capa);
+    ssize_t ret;
+    do_write_retry(write(iis->fd, iis->buf, iis->capa));
+    return (VALUE)ret;
 }
 
 static void*
@@ -956,7 +963,9 @@ static VALUE
 internal_writev_func(void *ptr)
 {
     struct io_internal_writev_struct *iis = ptr;
-    return writev(iis->fd, iis->iov, iis->iovcnt);
+    ssize_t ret;
+    do_write_retry(writev(iis->fd, iis->iov, iis->iovcnt));
+    return (VALUE)ret;
 }
 #endif
 

test/net/ftp/test_ftp.rb

@@ -425,7 +425,7 @@ class FTPTest < Test::Unit::TestCase
           end
           conn.print(l, "\r\n")
         end
-      rescue Errno::EPIPE, Errno::EPROTOTYPE
+      rescue Errno::EPIPE
       ensure
         assert_nil($!)
         conn.close

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.5.2"
 #define RUBY_RELEASE_DATE "2018-07-02"
-#define RUBY_PATCHLEVEL 64
+#define RUBY_PATCHLEVEL 65
 
 #define RUBY_RELEASE_YEAR 2018
 #define RUBY_RELEASE_MONTH 7