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Re: [Qemu-devel] [PULL 7/8] gtk: Fix -serial vc
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PULL 7/8] gtk: Fix -serial vc |
Date: |
Sun, 04 May 2014 20:25:18 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2014-05-04 19:07, Cole Robinson wrote:
> On 05/04/2014 04:35 AM, Jan Kiszka wrote:
>> On 2014-04-29 11:46, Gerd Hoffmann wrote:
>>> From: Cole Robinson <address@hidden>
>>>
>>> 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>
>>> Signed-off-by: Gerd Hoffmann <address@hidden>
>>> ---
>>> ui/gtk.c | 41 +++++++++--------------------------------
>>> 1 file changed, 9 insertions(+), 32 deletions(-)
>>>
>>> diff --git a/ui/gtk.c b/ui/gtk.c
>>> index c85aea3..1465a38 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
>>> @@ -1162,9 +1161,12 @@ 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;
>>> @@ -1190,19 +1192,12 @@ 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;
>>> }
>>> #endif
>>> @@ -1214,13 +1209,8 @@ 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;
>>>
>>> snprintf(buffer, sizeof(buffer), "vc%d", index);
>>> snprintf(path, sizeof(path), "<QEMU>/View/VC%d", index);
>>> @@ -1239,16 +1229,7 @@ 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);
>>>
>>> @@ -1263,7 +1244,6 @@ static GSList *gd_vc_init(GtkDisplayState *s,
>>> VirtualConsole *vc, int index, GSL
>>>
>>> vte_terminal_set_size(VTE_TERMINAL(vc->terminal), 80, 25);
>>>
>>> - vc->fd = slave_fd;
>>> vc->chr->opaque = vc;
>>> vc->scrolled_window = scrolled_window;
>>>
>>> @@ -1281,9 +1261,6 @@ 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;
>>> }
>>>
>>
>> This commit somehow messes up the monitor vc: Fire up qemu-system-x86_64
>> and switch to console 2 (monitor). You'll find it formatted as if the
>> console was only ~10 chars wide during printout of the monitor
>> greetings. When typing, everything is fine again. Maybe an ordering
>> issue that was only revealed by this commit, dunno yet.
>>
>
> Check out gerd's ui-gtk-next branch, there's a few extra patches related to
> vte sizing that might fix it.
Looks better thanks to "gtk: zap scrolled_window" (monitor is properly
formatted again). But the whole queue spits this out on the terminal:
(<unknown>:13169): Gtk-CRITICAL **: IA__gtk_window_resize: assertion `width >
0' failed
(<unknown>:13169): Gdk-CRITICAL **: IA__gdk_window_set_cursor: assertion
`GDK_IS_WINDOW (window)' failed
The last two patches seem to be responsible for this.
Jan
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