[Qemu-devel] [PATCH 3/5] gtk: Fix -serial vc

[Cole Robinson]

Try kicking off a rhel5 text install over serial, the text menu navigation
is all messed up, and some of the kernel boot messages are randomly
corrupted.

Drop use of a pty and just use vte infrastructure for reading and writing.
This fixes the above corruption, and is simpler to boot.

(I don't know what was wrong with the original code though. FWIW this is
what virt-manager has done for years).

Signed-off-by: Cole Robinson <address@hidden>
---
 ui/gtk.c | 41 +++++++++--------------------------------
 1 file changed, 9 insertions(+), 32 deletions(-)

diff --git a/ui/gtk.c b/ui/gtk.c
index 816ef15..117b0eb 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -115,7 +115,6 @@ typedef struct VirtualConsole
     GtkWidget *scrolled_window;
     CharDriverState *chr;
 #endif
-    int fd;
 } VirtualConsole;
 
 typedef struct GtkDisplayState
@@ -1166,9 +1165,12 @@ static gboolean gd_focus_out_event(GtkWidget *widget,
 
 static int gd_vc_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
 {
+#if defined(CONFIG_VTE)
     VirtualConsole *vc = chr->opaque;
 
-    return vc ? write(vc->fd, buf, len) : len;
+    vte_terminal_feed(VTE_TERMINAL(vc->terminal), (const char *)buf, len);
+#endif
+    return len;
 }
 
 static int nb_vcs;
@@ -1194,18 +1196,11 @@ void early_gtk_display_init(void)
 }
 
 #if defined(CONFIG_VTE)
-static gboolean gd_vc_in(GIOChannel *chan, GIOCondition cond, void *opaque)
+static gboolean gd_vc_in(VteTerminal *terminal, gchar *text, guint size,
+                         gpointer user_data)
 {
-    VirtualConsole *vc = opaque;
-    uint8_t buffer[1024];
-    ssize_t len;
-
-    len = read(vc->fd, buffer, sizeof(buffer));
-    if (len <= 0) {
-        return FALSE;
-    }
-
-    qemu_chr_be_write(vc->chr, buffer, len);
+    VirtualConsole *vc = user_data;
+    qemu_chr_be_write(vc->chr, (uint8_t  *)text, (unsigned int)size);
 
     return TRUE;
 }
@@ -1218,13 +1213,8 @@ static GSList *gd_vc_init(GtkDisplayState *s, 
VirtualConsole *vc, int index, GSL
     const char *label;
     char buffer[32];
     char path[32];
-#if VTE_CHECK_VERSION(0, 26, 0)
-    VtePty *pty;
-#endif
-    GIOChannel *chan;
     GtkWidget *scrolled_window;
     GtkAdjustment *vadjustment;
-    int master_fd, slave_fd;
     int width, height;
 
     snprintf(buffer, sizeof(buffer), "vc%d", index);
@@ -1244,16 +1234,7 @@ static GSList *gd_vc_init(GtkDisplayState *s, 
VirtualConsole *vc, int index, GSL
     gtk_accel_map_add_entry(path, GDK_KEY_2 + index, HOTKEY_MODIFIERS);
 
     vc->terminal = vte_terminal_new();
-
-    master_fd = qemu_openpty_raw(&slave_fd, NULL);
-    g_assert(master_fd != -1);
-
-#if VTE_CHECK_VERSION(0, 26, 0)
-    pty = vte_pty_new_foreign(master_fd, NULL);
-    vte_terminal_set_pty_object(VTE_TERMINAL(vc->terminal), pty);
-#else
-    vte_terminal_set_pty(VTE_TERMINAL(vc->terminal), master_fd);
-#endif
+    g_signal_connect(vc->terminal, "commit", G_CALLBACK(gd_vc_in), vc);
 
     vte_terminal_set_scrollback_lines(VTE_TERMINAL(vc->terminal), -1);
 
@@ -1277,7 +1258,6 @@ static GSList *gd_vc_init(GtkDisplayState *s, 
VirtualConsole *vc, int index, GSL
     gtk_widget_set_size_request(vc->terminal, width, height);
 #endif
 
-    vc->fd = slave_fd;
     vc->chr->opaque = vc;
     vc->scrolled_window = scrolled_window;
 
@@ -1295,9 +1275,6 @@ static GSList *gd_vc_init(GtkDisplayState *s, 
VirtualConsole *vc, int index, GSL
         vc->chr->init(vc->chr);
     }
 
-    chan = g_io_channel_unix_new(vc->fd);
-    g_io_add_watch(chan, G_IO_IN, gd_vc_in, vc);
-
 #endif /* CONFIG_VTE */
     return group;
 }
-- 
1.9.0