handle eof request of stdin

Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>

src/event.c

@@ -188,7 +188,7 @@ int hyper_event_read(struct hyper_event *de, int efd)
 	return 0;
 }
 
-int hyper_event_write(struct hyper_event *de)
+int hyper_event_write(struct hyper_event *de, int efd)
 {
 	struct hyper_buf *buf = &de->wbuf;
 	uint32_t len = 0;
@@ -246,7 +246,7 @@ int hyper_handle_event(int efd, struct epoll_event *event)
 	if (event->events & EPOLLOUT) {
 		fprintf(stdout, "%s event EPOLLOUT, de %p, fd %d, %p\n",
 			__func__, de, de->fd, de->ops);
-		if (de->ops->write && de->ops->write(de) < 0)
+		if (de->ops->write && de->ops->write(de, efd) < 0)
 			return -1;
 	}
 

src/event.h

@@ -8,7 +8,7 @@ struct hyper_event;
 
 struct hyper_event_ops {
 	int		(*read)(struct hyper_event *e, int efd);
-	int		(*write)(struct hyper_event *e);
+	int		(*write)(struct hyper_event *e, int efd);
 	int		(*handle)(struct hyper_event *e, uint32_t len);
 	void		(*hup)(struct hyper_event *e, int efd);
 	int		rbuf_size;
@@ -40,5 +40,5 @@ int hyper_handle_event(int efd, struct epoll_event *event);
 void hyper_reset_event(struct hyper_event *de);
 void hyper_event_hup(struct hyper_event *de, int efd);
 int hyper_event_read(struct hyper_event *dei, int efd);
-int hyper_event_write(struct hyper_event *de);
+int hyper_event_write(struct hyper_event *de, int efd);
 #endif

src/exec.c

@@ -136,9 +136,22 @@ static int pts_loop(struct hyper_event *de, uint64_t seq, int efd, struct hyper_
 	return 0;
 }
 
+static int write_to_stdin(struct hyper_event *de, int efd)
+{
+	struct hyper_exec *exec = container_of(de, struct hyper_exec, stdinev);
+	fprintf(stdout, "%s, seq %" PRIu64"\n", __func__, exec->seq);
+
+	int ret = hyper_event_write(de, efd);
+
+	if (ret >= 0 && de->wbuf.get == 0 && exec->close_stdin_request)
+		pts_hup(de, efd, exec);
+
+	return ret;
+}
+
 struct hyper_event_ops in_ops = {
 	.hup		= stdin_hup,
-	.write		= hyper_event_write,
+	.write		= write_to_stdin,
 	.wbuf_size	= 512,
 };
 

src/exec.h

@@ -22,6 +22,7 @@ struct hyper_exec {
 	int			stdinfd;
 	int			stdoutfd;
 	int			stderrfd;
+	uint8_t			close_stdin_request;
 	uint8_t			code;
 	uint8_t			exit;
 	uint8_t			ref;

src/init.c

@@ -1054,7 +1054,7 @@ static int hyper_ttyfd_handle(struct hyper_event *de, uint32_t len)
 	dprintf(stdout, "find exec %s pid %d, seq is %" PRIu64 "\n",
 		exec->id ? exec->id : "pod", exec->pid, exec->seq);
 	// if exec is exited, the event fd of exec is invalid. don't accept any input.
-	if (exec->exit) {
+	if (exec->exit || exec->close_stdin_request) {
 		fprintf(stdout, "exec seq %" PRIu64 " exited, don't accept any input\n", exec->seq);
 		return 0;
 	}
@@ -1070,6 +1070,16 @@ static int hyper_ttyfd_handle(struct hyper_event *de, uint32_t len)
 	if (size > (len - 12))
 		size = (len - 12);
 
+	/* size == 0 means we had received eof */
+	if (size == 0 && !exec->tty) {
+		exec->close_stdin_request = 1;
+		/* we can't hup the stdinev here, force hup on next write */
+		if (hyper_modify_event(ctl.efd, &exec->stdinev, EPOLLOUT) < 0) {
+			fprintf(stderr, "modify exec pts event to in & out failed\n");
+			return -1;
+		}
+	}
+
 	if (size > 0) {
 		memcpy(wbuf->data + wbuf->get, rbuf->data + 12, size);
 		wbuf->get += size;