Merge selectable descriptor casting from PHP_4_3 branch.

ext/standard/streamsfuncs.c

@@ -422,7 +422,7 @@ static int stream_array_to_fd_set(zval *stream_array, fd_set *fds, php_socket_t
 		 * when casting.  It is only used here so that the buffered data warning
 		 * is not displayed.
 		 * */
-		if (SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD | PHP_STREAM_CAST_INTERNAL, (void*)&this_fd, 1)) {
+		if (SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD_FOR_SELECT | PHP_STREAM_CAST_INTERNAL, (void*)&this_fd, 1)) {
 			FD_SET(this_fd, fds);
 			if (this_fd > *max_fd) {
 				*max_fd = this_fd;
@@ -458,7 +458,7 @@ static int stream_array_from_fd_set(zval *stream_array, fd_set *fds TSRMLS_DC)
 		 * when casting.  It is only used here so that the buffered data warning
 		 * is not displayed.
 		 */
-		if (SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD | PHP_STREAM_CAST_INTERNAL, (void*)&this_fd, 1)) {
+		if (SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD_FOR_SELECT | PHP_STREAM_CAST_INTERNAL, (void*)&this_fd, 1)) {
 			if (FD_ISSET(this_fd, fds)) {
 				zend_hash_next_index_insert(new_hash, (void *)elem, sizeof(zval *), (void **)&dest_elem);
 				if (dest_elem) {

main/php_streams.h

@@ -388,6 +388,8 @@ PHPAPI size_t _php_stream_passthru(php_stream * src STREAMS_DC TSRMLS_DC);
 #define PHP_STREAM_AS_FD		1
 /* cast as a socketd */
 #define PHP_STREAM_AS_SOCKETD	2
+/* cast as fd/socket for select purposes */
+#define PHP_STREAM_AS_FD_FOR_SELECT 3
 
 /* try really, really hard to make sure the cast happens (avoid using this flag if possible) */
 #define PHP_STREAM_CAST_TRY_HARD	0x80000000

main/streams/cast.c

@@ -137,10 +137,6 @@ static COOKIE_IO_FUNCTIONS_T stream_cookie_functions =
 #endif
 /* }}} */
 
-
-
-
-
 /* {{{ php_stream_cast */
 PHPAPI int _php_stream_cast(php_stream *stream, int castas, void **ret, int show_err TSRMLS_DC)
 {
@@ -148,7 +144,7 @@ PHPAPI int _php_stream_cast(php_stream *stream, int castas, void **ret, int show
 	castas &= ~PHP_STREAM_CAST_MASK;
 
 	/* synchronize our buffer (if possible) */
-	if (ret) {
+	if (ret && castas != PHP_STREAM_AS_FD_FOR_SELECT) {
 		php_stream_flush(stream);
 		if (stream->ops->seek && (stream->flags & PHP_STREAM_FLAG_NO_SEEK) == 0) {
 			off_t dummy;
@@ -248,8 +244,8 @@ PHPAPI int _php_stream_cast(php_stream *stream, int castas, void **ret, int show
 
 	if (show_err) {
 		/* these names depend on the values of the PHP_STREAM_AS_XXX defines in php_streams.h */
-		static const char *cast_names[3] = {
-			"STDIO FILE*", "File Descriptor", "Socket Descriptor"
+		static const char *cast_names[4] = {
+			"STDIO FILE*", "File Descriptor", "Socket Descriptor", "select()able descriptor"
 		};
 
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "cannot represent a stream of type %s as a %s",

main/streams/plain_wrapper.c

@@ -523,6 +523,16 @@ static int php_stdiop_cast(php_stream *stream, int castas, void **ret TSRMLS_DC)
 			}
 			return SUCCESS;
 
+		case PHP_STREAM_AS_FD_FOR_SELECT:
+			PHP_STDIOP_GET_FD(fd, data);
+			if (fd < 0) {
+				return FAILURE;
+			}
+			if (ret) {
+				*(int*)ret = fd;
+			}
+			return SUCCESS;
+
 		case PHP_STREAM_AS_FD:
 			PHP_STDIOP_GET_FD(fd, data);
 

main/streams/xp_socket.c

@@ -282,6 +282,7 @@ static int php_sockop_cast(php_stream *stream, int castas, void **ret TSRMLS_DC)
 				return FAILURE;
 			}
 			return SUCCESS;
+		case PHP_STREAM_AS_FD_FOR_SELECT:
 		case PHP_STREAM_AS_FD:
 		case PHP_STREAM_AS_SOCKETD:
 			if (ret)