mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-07-11 12:25:52 +00:00
b79abf9c3c
By using the new qemu monitor functions to handle passing and removing file descriptors, we can support hotplug of vdpa devices. Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2019 IBM Corporation
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "qemu/qemu_hotplug.h"
|
|
#include "qemu/qemu_interface.h"
|
|
#include "qemu/qemu_process.h"
|
|
#include "conf/domain_conf.h"
|
|
#include "virdevmapper.h"
|
|
#include "virutil.h"
|
|
#include "virmock.h"
|
|
#include <fcntl.h>
|
|
|
|
static int (*real_virGetDeviceID)(const char *path, int *maj, int *min);
|
|
static bool (*real_virFileExists)(const char *path);
|
|
|
|
static void
|
|
init_syms(void)
|
|
{
|
|
if (real_virFileExists)
|
|
return;
|
|
|
|
VIR_MOCK_REAL_INIT(virGetDeviceID);
|
|
VIR_MOCK_REAL_INIT(virFileExists);
|
|
}
|
|
|
|
unsigned long long
|
|
qemuDomainGetUnplugTimeout(virDomainObjPtr vm)
|
|
{
|
|
/* Wait only 100ms for DEVICE_DELETED event. Give a greater
|
|
* timeout in case of PSeries guest to be consistent with the
|
|
* original logic. */
|
|
if (qemuDomainIsPSeries(vm->def))
|
|
return 20;
|
|
return 10;
|
|
}
|
|
|
|
|
|
int
|
|
virDevMapperGetTargets(const char *path,
|
|
char ***devPaths)
|
|
{
|
|
*devPaths = NULL;
|
|
|
|
if (STREQ(path, "/dev/mapper/virt")) {
|
|
*devPaths = g_new0(char *, 4);
|
|
(*devPaths)[0] = g_strdup("/dev/block/8:0"); /* /dev/sda */
|
|
(*devPaths)[1] = g_strdup("/dev/block/8:16"); /* /dev/sdb */
|
|
(*devPaths)[2] = g_strdup("/dev/block/8:32"); /* /dev/sdc */
|
|
(*devPaths)[3] = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
virGetDeviceID(const char *path, int *maj, int *min)
|
|
{
|
|
init_syms();
|
|
|
|
if (STREQ(path, "/dev/mapper/virt")) {
|
|
*maj = 254;
|
|
*min = 0;
|
|
return 0;
|
|
}
|
|
|
|
return real_virGetDeviceID(path, maj, min);
|
|
}
|
|
|
|
|
|
bool
|
|
virFileExists(const char *path)
|
|
{
|
|
init_syms();
|
|
|
|
if (STREQ(path, "/dev/mapper/virt"))
|
|
return true;
|
|
|
|
return real_virFileExists(path);
|
|
}
|
|
|
|
|
|
int
|
|
qemuProcessStartManagedPRDaemon(virDomainObjPtr vm G_GNUC_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
qemuProcessKillManagedPRDaemon(virDomainObjPtr vm G_GNUC_UNUSED)
|
|
{
|
|
}
|
|
|
|
int
|
|
qemuInterfaceVDPAConnect(virDomainNetDefPtr net G_GNUC_UNUSED)
|
|
{
|
|
/* need a valid fd or sendmsg won't work. Just open /dev/null */
|
|
return open("/dev/null", O_RDONLY);
|
|
}
|