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vbox: Fix starting domains

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When starting a VirtualBox domain, we try to guess which frontend
to use. While the whole algorithm looks a bit outdated, it may
happen that we tell VirtualBox to use "gui" frontend, but not
which DISPLAY= to use.

I haven't found any documentation on the algorithm we use, but if
I make us fallback onto DISPLAY=:0 when no other configuration is
found then I'm able to start my guests just fine.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Michal Privoznik 2023-01-21 12:46:05 +01:00
parent aee2653c00
commit 3f4f0ef47d
1 changed files with 21 additions and 20 deletions
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41
src/vbox/vbox_common.c
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@ -2120,32 +2120,33 @@ vboxStartMachine(virDomainPtr dom, int maxDomID, IMachine *machine, vboxIID *iid
}
VBOX_UTF8_FREE(valueDisplayUtf8);
if (guiPresent) {
if (guiDisplay) {
if (guiPresent || sdlPresent) {
const char *display = NULL;
const char *sessType = NULL;
char *displayutf8;
displayutf8 = g_strdup_printf("DISPLAY=%s", guiDisplay);
if (guiPresent) {
sessType = "gui";
display = guiDisplay;
} else {
sessType = "sdl";
display = sdlDisplay;
}
if (!display) {
/* Provide some sane default */
display = ":0";
}
displayutf8 = g_strdup_printf("DISPLAY=%s", display);
VBOX_UTF8_TO_UTF16(displayutf8, &env);
VIR_FREE(displayutf8);
VIR_FREE(guiDisplay);
}
VBOX_UTF8_TO_UTF16("gui", &sessionType);
}
if (sdlPresent) {
if (sdlDisplay) {
char *displayutf8;
displayutf8 = g_strdup_printf("DISPLAY=%s", sdlDisplay);
VBOX_UTF8_TO_UTF16(displayutf8, &env);
VIR_FREE(displayutf8);
VIR_FREE(sdlDisplay);
}
VBOX_UTF8_TO_UTF16("sdl", &sessionType);
}
if (vrdpPresent)
VBOX_UTF8_TO_UTF16(sessType, &sessionType);
} else if (vrdpPresent) {
VBOX_UTF8_TO_UTF16("vrdp", &sessionType);
}
rc = gVBoxAPI.UIMachine.LaunchVMProcess(data, machine, iid,
sessionType, env,