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qemu / qemu / 75d4680c55498d6cf4f89b31e52d97f90d7fc46e / . / qga / commands-win32.c
blob: d4482538ec545a1fcaaf5abbe552a22d8c7dc795 [file] [log] [blame]
/*
* QEMU Guest Agent win32-specific command implementations
*
* Copyright IBM Corp. 2012
*
* Authors:
* Michael Roth <mdroth@linux.vnet.ibm.com>
* Gal Hammer <ghammer@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include <wtypes.h>
#include <powrprof.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iptypes.h>
#include <iphlpapi.h>
#include <winioctl.h>
#include <ntddscsi.h>
#include <setupapi.h>
#include <cfgmgr32.h>
#include <initguid.h>
#include <devpropdef.h>
#include <lm.h>
#include <wtsapi32.h>
#include <wininet.h>
#include "guest-agent-core.h"
#include "vss-win32.h"
#include "qga-qapi-commands.h"
#include "qapi/error.h"
#include "qapi/qmp/qerror.h"
#include "qemu/queue.h"
#include "qemu/host-utils.h"
#include "qemu/base64.h"
#include "commands-common.h"
/*
* The following should be in devpkey.h, but it isn't. The key names were
* prefixed to avoid (future) name clashes. Once the definitions get into
* mingw the following lines can be removed.
*/
DEFINE_DEVPROPKEY(qga_DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5,
0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10);
/* DEVPROP_TYPE_STRING */
DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c,
0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3);
/* DEVPROP_TYPE_STRING_LIST */
DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverDate, 0xa8b865dd, 0x2e3d,
0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 2);
/* DEVPROP_TYPE_FILETIME */
DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverVersion, 0xa8b865dd, 0x2e3d,
0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 3);
/* DEVPROP_TYPE_STRING */
/* The CM_Get_DevNode_PropertyW prototype is only sometimes in cfgmgr32.h */
#ifndef CM_Get_DevNode_Property
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wredundant-decls"
CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW(
DEVINST dnDevInst,
CONST DEVPROPKEY * PropertyKey,
DEVPROPTYPE * PropertyType,
PBYTE PropertyBuffer,
PULONG PropertyBufferSize,
ULONG ulFlags
);
#define CM_Get_DevNode_Property CM_Get_DevNode_PropertyW
#pragma GCC diagnostic pop
#endif
#ifndef SHTDN_REASON_FLAG_PLANNED
#define SHTDN_REASON_FLAG_PLANNED 0x80000000
#endif
/* multiple of 100 nanoseconds elapsed between windows baseline
* (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
#define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
(365 * (1970 - 1601) + \
(1970 - 1601) / 4 - 3))
#define INVALID_SET_FILE_POINTER ((DWORD)-1)
struct GuestFileHandle {
int64_t id;
HANDLE fh;
QTAILQ_ENTRY(GuestFileHandle) next;
};
static struct {
QTAILQ_HEAD(, GuestFileHandle) filehandles;
} guest_file_state = {
.filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
};
#define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
typedef struct OpenFlags {
const char *forms;
DWORD desired_access;
DWORD creation_disposition;
} OpenFlags;
static OpenFlags guest_file_open_modes[] = {
{"r", GENERIC_READ, OPEN_EXISTING},
{"rb", GENERIC_READ, OPEN_EXISTING},
{"w", GENERIC_WRITE, CREATE_ALWAYS},
{"wb", GENERIC_WRITE, CREATE_ALWAYS},
{"a", FILE_GENERIC_APPEND, OPEN_ALWAYS },
{"r+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING},
{"rb+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING},
{"r+b", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING},
{"w+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS},
{"wb+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS},
{"w+b", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS},
{"a+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS },
{"ab+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS },
{"a+b", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS }
};
#define debug_error(msg) do { \
char *suffix = g_win32_error_message(GetLastError()); \
g_debug("%s: %s", (msg), suffix); \
g_free(suffix); \
} while (0)
static OpenFlags *find_open_flag(const char *mode_str)
{
int mode;
Error **errp = NULL;
for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
OpenFlags *flags = guest_file_open_modes + mode;
if (strcmp(flags->forms, mode_str) == 0) {
return flags;
}
}
error_setg(errp, "invalid file open mode '%s'", mode_str);
return NULL;
}
static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
{
GuestFileHandle *gfh;
int64_t handle;
handle = ga_get_fd_handle(ga_state, errp);
if (handle < 0) {
return -1;
}
gfh = g_new0(GuestFileHandle, 1);
gfh->id = handle;
gfh->fh = fh;
QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
return handle;
}
GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
{
GuestFileHandle *gfh;
QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
if (gfh->id == id) {
return gfh;
}
}
error_setg(errp, "handle '%" PRId64 "' has not been found", id);
return NULL;
}
static void handle_set_nonblocking(HANDLE fh)
{
DWORD file_type, pipe_state;
file_type = GetFileType(fh);
if (file_type != FILE_TYPE_PIPE) {
return;
}
/* If file_type == FILE_TYPE_PIPE, according to MSDN
* the specified file is socket or named pipe */
if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
NULL, NULL, NULL, 0)) {
return;
}
/* The fd is named pipe fd */
if (pipe_state & PIPE_NOWAIT) {
return;
}
pipe_state |= PIPE_NOWAIT;
SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
}
int64_t qmp_guest_file_open(const char *path, const char *mode, Error **errp)
{
int64_t fd = -1;
HANDLE fh;
HANDLE templ_file = NULL;
DWORD share_mode = FILE_SHARE_READ;
DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
LPSECURITY_ATTRIBUTES sa_attr = NULL;
OpenFlags *guest_flags;
GError *gerr = NULL;
wchar_t *w_path = NULL;
if (!mode) {
mode = "r";
}
slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
guest_flags = find_open_flag(mode);
if (guest_flags == NULL) {
error_setg(errp, "invalid file open mode");
goto done;
}
w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr);
if (!w_path) {
error_setg(errp, "can't convert 'path' to UTF-16: %s",
gerr->message);
g_error_free(gerr);
goto done;
}
fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr,
guest_flags->creation_disposition, flags_and_attr,
templ_file);
if (fh == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
path);
goto done;
}
/* set fd non-blocking to avoid common use cases (like reading from a
* named pipe) from hanging the agent
*/
handle_set_nonblocking(fh);
fd = guest_file_handle_add(fh, errp);
if (fd < 0) {
CloseHandle(fh);
error_setg(errp, "failed to add handle to qmp handle table");
goto done;
}
slog("guest-file-open, handle: % " PRId64, fd);
done:
g_free(w_path);
return fd;
}
void qmp_guest_file_close(int64_t handle, Error **errp)
{
bool ret;
GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
slog("guest-file-close called, handle: %" PRId64, handle);
if (gfh == NULL) {
return;
}
ret = CloseHandle(gfh->fh);
if (!ret) {
error_setg_win32(errp, GetLastError(), "failed close handle");
return;
}
QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
g_free(gfh);
}
static void acquire_privilege(const char *name, Error **errp)
{
HANDLE token = NULL;
TOKEN_PRIVILEGES priv;
if (OpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token))
{
if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
error_setg(errp, "no luid for requested privilege");
goto out;
}
priv.PrivilegeCount = 1;
priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
error_setg(errp, "unable to acquire requested privilege");
goto out;
}
} else {
error_setg(errp, "failed to open privilege token");
}
out:
if (token) {
CloseHandle(token);
}
}
static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
Error **errp)
{
HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
if (!thread) {
error_setg(errp, "failed to dispatch asynchronous command");
}
}
void qmp_guest_shutdown(const char *mode, Error **errp)
{
Error *local_err = NULL;
UINT shutdown_flag = EWX_FORCE;
slog("guest-shutdown called, mode: %s", mode);
if (!mode || strcmp(mode, "powerdown") == 0) {
shutdown_flag |= EWX_POWEROFF;
} else if (strcmp(mode, "halt") == 0) {
shutdown_flag |= EWX_SHUTDOWN;
} else if (strcmp(mode, "reboot") == 0) {
shutdown_flag |= EWX_REBOOT;
} else {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
"'halt', 'powerdown', or 'reboot'");
return;
}
/* Request a shutdown privilege, but try to shut down the system
anyway. */
acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
g_autofree gchar *emsg = g_win32_error_message(GetLastError());
slog("guest-shutdown failed: %s", emsg);
error_setg_win32(errp, GetLastError(), "guest-shutdown failed");
}
}
GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh,
int64_t count, Error **errp)
{
GuestFileRead *read_data = NULL;
guchar *buf;
HANDLE fh = gfh->fh;
bool is_ok;
DWORD read_count;
buf = g_malloc0(count + 1);
is_ok = ReadFile(fh, buf, count, &read_count, NULL);
if (!is_ok) {
error_setg_win32(errp, GetLastError(), "failed to read file");
} else {
buf[read_count] = 0;
read_data = g_new0(GuestFileRead, 1);
read_data->count = (size_t)read_count;
read_data->eof = read_count == 0;
if (read_count != 0) {
read_data->buf_b64 = g_base64_encode(buf, read_count);
}
}
g_free(buf);
return read_data;
}
GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
bool has_count, int64_t count,
Error **errp)
{
GuestFileWrite *write_data = NULL;
guchar *buf;
gsize buf_len;
bool is_ok;
DWORD write_count;
GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
HANDLE fh;
if (!gfh) {
return NULL;
}
fh = gfh->fh;
buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
if (!buf) {
return NULL;
}
if (!has_count) {
count = buf_len;
} else if (count < 0 || count > buf_len) {
error_setg(errp, "value '%" PRId64
"' is invalid for argument count", count);
goto done;
}
is_ok = WriteFile(fh, buf, count, &write_count, NULL);
if (!is_ok) {
error_setg_win32(errp, GetLastError(), "failed to write to file");
slog("guest-file-write-failed, handle: %" PRId64, handle);
} else {
write_data = g_new0(GuestFileWrite, 1);
write_data->count = (size_t) write_count;
}
done:
g_free(buf);
return write_data;
}
GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
GuestFileWhence *whence_code,
Error **errp)
{
GuestFileHandle *gfh;
GuestFileSeek *seek_data;
HANDLE fh;
LARGE_INTEGER new_pos, off_pos;
off_pos.QuadPart = offset;
BOOL res;
int whence;
Error *err = NULL;
gfh = guest_file_handle_find(handle, errp);
if (!gfh) {
return NULL;
}
/* We stupidly exposed 'whence':'int' in our qapi */
whence = ga_parse_whence(whence_code, &err);
if (err) {
error_propagate(errp, err);
return NULL;
}
fh = gfh->fh;
res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
if (!res) {
error_setg_win32(errp, GetLastError(), "failed to seek file");
return NULL;
}
seek_data = g_new0(GuestFileSeek, 1);
seek_data->position = new_pos.QuadPart;
return seek_data;
}
void qmp_guest_file_flush(int64_t handle, Error **errp)
{
HANDLE fh;
GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
if (!gfh) {
return;
}
fh = gfh->fh;
if (!FlushFileBuffers(fh)) {
error_setg_win32(errp, GetLastError(), "failed to flush file");
}
}
static GuestDiskBusType win2qemu[] = {
[BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
[BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
[BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
[BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
[BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
[BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
[BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
[BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
[BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
[BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
[BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
[BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
[BusTypeSd] = GUEST_DISK_BUS_TYPE_SD,
[BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
[BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
[BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
/*
* BusTypeSpaces currently is not supported
*/
[BusTypeSpaces] = GUEST_DISK_BUS_TYPE_UNKNOWN,
[BusTypeNvme] = GUEST_DISK_BUS_TYPE_NVME,
};
static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
{
if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) {
return GUEST_DISK_BUS_TYPE_UNKNOWN;
}
return win2qemu[(int)bus];
}
static void get_pci_address_for_device(GuestPCIAddress *pci,
HDEVINFO dev_info)
{
SP_DEVINFO_DATA dev_info_data;
DWORD j;
DWORD size;
bool partial_pci = false;
dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
for (j = 0;
SetupDiEnumDeviceInfo(dev_info, j, &dev_info_data);
j++) {
DWORD addr, bus, ui_slot, type;
int func, slot;
size = sizeof(DWORD);
/*
* There is no need to allocate buffer in the next functions. The
* size is known and ULONG according to
* https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
*/
if (!SetupDiGetDeviceRegistryProperty(
dev_info, &dev_info_data, SPDRP_BUSNUMBER,
&type, (PBYTE)&bus, size, NULL)) {
debug_error("failed to get PCI bus");
bus = -1;
partial_pci = true;
}
/*
* The function retrieves the device's address. This value will be
* transformed into device function and number
*/
if (!SetupDiGetDeviceRegistryProperty(
dev_info, &dev_info_data, SPDRP_ADDRESS,
&type, (PBYTE)&addr, size, NULL)) {
debug_error("failed to get PCI address");
addr = -1;
partial_pci = true;
}
/*
* This call returns UINumber of DEVICE_CAPABILITIES structure.
* This number is typically a user-perceived slot number.
*/
if (!SetupDiGetDeviceRegistryProperty(
dev_info, &dev_info_data, SPDRP_UI_NUMBER,
&type, (PBYTE)&ui_slot, size, NULL)) {
debug_error("failed to get PCI slot");
ui_slot = -1;
partial_pci = true;
}
/*
* SetupApi gives us the same information as driver with
* IoGetDeviceProperty. According to Microsoft:
*
* FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF)
* DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF)
* SPDRP_ADDRESS is propertyAddress, so we do the same.
*
* https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya
*/
if (partial_pci) {
pci->domain = -1;
pci->slot = -1;
pci->function = -1;
pci->bus = -1;
continue;
} else {
func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF;
slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF;
if ((int)ui_slot != slot) {
g_debug("mismatch with reported slot values: %d vs %d",
(int)ui_slot, slot);
}
pci->domain = 0;
pci->slot = (int)ui_slot;
pci->function = func;
pci->bus = (int)bus;
return;
}
}
}
static GuestPCIAddress *get_empty_pci_address(void)
{
GuestPCIAddress *pci = NULL;
pci = g_malloc0(sizeof(*pci));
pci->domain = -1;
pci->slot = -1;
pci->function = -1;
pci->bus = -1;
return pci;
}
static GuestPCIAddress *get_pci_info(int number, Error **errp)
{
HDEVINFO dev_info = INVALID_HANDLE_VALUE;
HDEVINFO parent_dev_info = INVALID_HANDLE_VALUE;
SP_DEVINFO_DATA dev_info_data;
SP_DEVICE_INTERFACE_DATA dev_iface_data;
HANDLE dev_file;
int i;
GuestPCIAddress *pci = get_empty_pci_address();
dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (dev_info == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to get devices tree");
goto end;
}
g_debug("enumerating devices");
dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL;
STORAGE_DEVICE_NUMBER sdn;
g_autofree char *parent_dev_id = NULL;
SP_DEVINFO_DATA parent_dev_info_data;
DWORD size = 0;
g_debug("getting device path");
if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data,
&GUID_DEVINTERFACE_DISK, 0,
&dev_iface_data)) {
if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
pdev_iface_detail_data,
size, &size,
&dev_info_data)) {
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
pdev_iface_detail_data = g_malloc(size);
pdev_iface_detail_data->cbSize =
sizeof(*pdev_iface_detail_data);
} else {
error_setg_win32(errp, GetLastError(),
"failed to get device interfaces");
goto end;
}
}
if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
pdev_iface_detail_data,
size, &size,
&dev_info_data)) {
// pdev_iface_detail_data already is allocated
error_setg_win32(errp, GetLastError(),
"failed to get device interfaces");
goto end;
}
dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
FILE_SHARE_READ, NULL, OPEN_EXISTING, 0,
NULL);
if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
CloseHandle(dev_file);
error_setg_win32(errp, GetLastError(),
"failed to get device slot number");
goto end;
}
CloseHandle(dev_file);
if (sdn.DeviceNumber != number) {
continue;
}
} else {
error_setg_win32(errp, GetLastError(),
"failed to get device interfaces");
goto end;
}
g_debug("found device slot %d. Getting storage controller", number);
{
CONFIGRET cr;
DEVINST dev_inst, parent_dev_inst;
ULONG dev_id_size = 0;
size = 0;
if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
parent_dev_id, size, &size)) {
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
parent_dev_id = g_malloc(size);
} else {
error_setg_win32(errp, GetLastError(),
"failed to get device instance ID");
goto end;
}
}
if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
parent_dev_id, size, &size)) {
// parent_dev_id already is allocated
error_setg_win32(errp, GetLastError(),
"failed to get device instance ID");
goto end;
}
/*
* CM API used here as opposed to
* SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...)
* which exports are only available in mingw-w64 6+
*/
cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0);
if (cr != CR_SUCCESS) {
g_error("CM_Locate_DevInst failed with code %lx", cr);
error_setg_win32(errp, GetLastError(),
"failed to get device instance");
goto end;
}
cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0);
if (cr != CR_SUCCESS) {
g_error("CM_Get_Parent failed with code %lx", cr);
error_setg_win32(errp, GetLastError(),
"failed to get parent device instance");
goto end;
}
cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0);
if (cr != CR_SUCCESS) {
g_error("CM_Get_Device_ID_Size failed with code %lx", cr);
error_setg_win32(errp, GetLastError(),
"failed to get parent device ID length");
goto end;
}
++dev_id_size;
if (dev_id_size > size) {
g_free(parent_dev_id);
parent_dev_id = g_malloc(dev_id_size);
}
cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size,
0);
if (cr != CR_SUCCESS) {
g_error("CM_Get_Device_ID failed with code %lx", cr);
error_setg_win32(errp, GetLastError(),
"failed to get parent device ID");
goto end;
}
}
g_debug("querying storage controller %s for PCI information",
parent_dev_id);
parent_dev_info =
SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id,
NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (parent_dev_info == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(),
"failed to get parent device");
goto end;
}
parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) {
error_setg_win32(errp, GetLastError(),
"failed to get parent device data");
goto end;
}
get_pci_address_for_device(pci, parent_dev_info);
break;
}
end:
if (parent_dev_info != INVALID_HANDLE_VALUE) {
SetupDiDestroyDeviceInfoList(parent_dev_info);
}
if (dev_info != INVALID_HANDLE_VALUE) {
SetupDiDestroyDeviceInfoList(dev_info);
}
return pci;
}
static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk,
Error **errp)
{
STORAGE_PROPERTY_QUERY query;
STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
DWORD received;
ULONG size = sizeof(buf);
dev_desc = &buf;
query.PropertyId = StorageDeviceProperty;
query.QueryType = PropertyStandardQuery;
if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
size, &received, NULL)) {
error_setg_win32(errp, GetLastError(), "failed to get bus type");
return;
}
disk->bus_type = find_bus_type(dev_desc->BusType);
g_debug("bus type %d", disk->bus_type);
/* Query once more. Now with long enough buffer. */
size = dev_desc->Size;
dev_desc = g_malloc0(size);
if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
size, &received, NULL)) {
error_setg_win32(errp, GetLastError(), "failed to get serial number");
g_debug("failed to get serial number");
goto out_free;
}
if (dev_desc->SerialNumberOffset > 0) {
const char *serial;
size_t len;
if (dev_desc->SerialNumberOffset >= received) {
error_setg(errp, "failed to get serial number: offset outside the buffer");
g_debug("serial number offset outside the buffer");
goto out_free;
}
serial = (char *)dev_desc + dev_desc->SerialNumberOffset;
len = received - dev_desc->SerialNumberOffset;
g_debug("serial number \"%s\"", serial);
if (*serial != 0) {
disk->serial = g_strndup(serial, len);
}
}
out_free:
g_free(dev_desc);
}
static void get_single_disk_info(int disk_number,
GuestDiskAddress *disk, Error **errp)
{
SCSI_ADDRESS addr, *scsi_ad;
DWORD len;
HANDLE disk_h;
Error *local_err = NULL;
scsi_ad = &addr;
g_debug("getting disk info for: %s", disk->dev);
disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
0, NULL);
if (disk_h == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to open disk");
return;
}
get_disk_properties(disk_h, disk, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto err_close;
}
g_debug("bus type %d", disk->bus_type);
/* always set pci_controller as required by schema. get_pci_info() should
* report -1 values for non-PCI buses rather than fail. fail the command
* if that doesn't hold since that suggests some other unexpected
* breakage
*/
if (disk->bus_type == GUEST_DISK_BUS_TYPE_USB) {
disk->pci_controller = get_empty_pci_address();
} else {
disk->pci_controller = get_pci_info(disk_number, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto err_close;
}
}
if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI
|| disk->bus_type == GUEST_DISK_BUS_TYPE_IDE
|| disk->bus_type == GUEST_DISK_BUS_TYPE_RAID
/* This bus type is not supported before Windows Server 2003 SP1 */
|| disk->bus_type == GUEST_DISK_BUS_TYPE_SAS
) {
/* We are able to use the same ioctls for different bus types
* according to Microsoft docs
* https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
g_debug("getting SCSI info");
if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
sizeof(SCSI_ADDRESS), &len, NULL)) {
disk->unit = addr.Lun;
disk->target = addr.TargetId;
disk->bus = addr.PathId;
}
/* We do not set error in this case, because we still have enough
* information about volume. */
}
err_close:
CloseHandle(disk_h);
}
/* VSS provider works with volumes, thus there is no difference if
* the volume consist of spanned disks. Info about the first disk in the
* volume is returned for the spanned disk group (LVM) */
static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
{
Error *local_err = NULL;
GuestDiskAddressList *list = NULL;
GuestDiskAddress *disk = NULL;
int i;
HANDLE vol_h;
DWORD size;
PVOLUME_DISK_EXTENTS extents = NULL;
/* strip final backslash */
char *name = g_strdup(guid);
if (g_str_has_suffix(name, "\\")) {
name[strlen(name) - 1] = 0;
}
g_debug("opening %s", name);
vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
0, NULL);
if (vol_h == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to open volume");
goto out;
}
/* Get list of extents */
g_debug("getting disk extents");
size = sizeof(VOLUME_DISK_EXTENTS);
extents = g_malloc0(size);
if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
0, extents, size, &size, NULL)) {
DWORD last_err = GetLastError();
if (last_err == ERROR_MORE_DATA) {
/* Try once more with big enough buffer */
size = sizeof(VOLUME_DISK_EXTENTS) +
(sizeof(DISK_EXTENT) * (extents->NumberOfDiskExtents - 1));
g_free(extents);
extents = g_malloc0(size);
if (!DeviceIoControl(
vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
0, extents, size, NULL, NULL)) {
error_setg_win32(errp, GetLastError(),
"failed to get disk extents");
goto out;
}
} else if (last_err == ERROR_INVALID_FUNCTION) {
/* Possibly CD-ROM or a shared drive. Try to pass the volume */
g_debug("volume not on disk");
disk = g_new0(GuestDiskAddress, 1);
disk->dev = g_strdup(name);
get_single_disk_info(0xffffffff, disk, &local_err);
if (local_err) {
g_debug("failed to get disk info, ignoring error: %s",
error_get_pretty(local_err));
error_free(local_err);
goto out;
}
QAPI_LIST_PREPEND(list, disk);
disk = NULL;
goto out;
} else {
error_setg_win32(errp, GetLastError(),
"failed to get disk extents");
goto out;
}
}
g_debug("Number of extents: %lu", extents->NumberOfDiskExtents);
/* Go through each extent */
for (i = 0; i < extents->NumberOfDiskExtents; i++) {
disk = g_new0(GuestDiskAddress, 1);
/* Disk numbers directly correspond to numbers used in UNCs
*
* See documentation for DISK_EXTENT:
* https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent
*
* See also Naming Files, Paths and Namespaces:
* https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces
*/
disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
extents->Extents[i].DiskNumber);
get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
}
QAPI_LIST_PREPEND(list, disk);
disk = NULL;
}
out:
if (vol_h != INVALID_HANDLE_VALUE) {
CloseHandle(vol_h);
}
qapi_free_GuestDiskAddress(disk);
g_free(extents);
g_free(name);
return list;
}
GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
{
GuestDiskInfoList *ret = NULL;
HDEVINFO dev_info;
SP_DEVICE_INTERFACE_DATA dev_iface_data;
int i;
dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (dev_info == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to get device tree");
return NULL;
}
g_debug("enumerating devices");
dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
for (i = 0;
SetupDiEnumDeviceInterfaces(dev_info, NULL, &GUID_DEVINTERFACE_DISK,
i, &dev_iface_data);
i++) {
GuestDiskAddress *address = NULL;
GuestDiskInfo *disk = NULL;
Error *local_err = NULL;
g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA
pdev_iface_detail_data = NULL;
STORAGE_DEVICE_NUMBER sdn;
HANDLE dev_file;
DWORD size = 0;
BOOL result;
int attempt;
g_debug(" getting device path");
for (attempt = 0, result = FALSE; attempt < 2 && !result; attempt++) {
result = SetupDiGetDeviceInterfaceDetail(dev_info,
&dev_iface_data, pdev_iface_detail_data, size, &size, NULL);
if (result) {
break;
}
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
pdev_iface_detail_data = g_realloc(pdev_iface_detail_data,
size);
pdev_iface_detail_data->cbSize =
sizeof(*pdev_iface_detail_data);
} else {
g_debug("failed to get device interface details");
break;
}
}
if (!result) {
g_debug("skipping device");
continue;
}
g_debug(" device: %s", pdev_iface_detail_data->DevicePath);
dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
CloseHandle(dev_file);
debug_error("failed to get storage device number");
continue;
}
CloseHandle(dev_file);
disk = g_new0(GuestDiskInfo, 1);
disk->name = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
sdn.DeviceNumber);
g_debug(" number: %lu", sdn.DeviceNumber);
address = g_new0(GuestDiskAddress, 1);
address->dev = g_strdup(disk->name);
get_single_disk_info(sdn.DeviceNumber, address, &local_err);
if (local_err) {
g_debug("failed to get disk info: %s",
error_get_pretty(local_err));
error_free(local_err);
qapi_free_GuestDiskAddress(address);
address = NULL;
} else {
disk->address = address;
}
QAPI_LIST_PREPEND(ret, disk);
}
SetupDiDestroyDeviceInfoList(dev_info);
return ret;
}
static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
{
DWORD info_size;
char mnt, *mnt_point;
wchar_t wfs_name[32];
char fs_name[32];
wchar_t vol_info[MAX_PATH + 1];
size_t len;
uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
GuestFilesystemInfo *fs = NULL;
HANDLE hLocalDiskHandle = INVALID_HANDLE_VALUE;
GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
if (GetLastError() != ERROR_MORE_DATA) {
error_setg_win32(errp, GetLastError(), "failed to get volume name");
return NULL;
}
mnt_point = g_malloc(info_size + 1);
if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
&info_size)) {
error_setg_win32(errp, GetLastError(), "failed to get volume name");
goto free;
}
hLocalDiskHandle = CreateFile(guid, 0 , 0, NULL, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL |
FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (INVALID_HANDLE_VALUE == hLocalDiskHandle) {
error_setg_win32(errp, GetLastError(), "failed to get handle for volume");
goto free;
}
len = strlen(mnt_point);
mnt_point[len] = '\\';
mnt_point[len + 1] = 0;
if (!GetVolumeInformationByHandleW(hLocalDiskHandle, vol_info,
sizeof(vol_info), NULL, NULL, NULL,
(LPWSTR) & wfs_name, sizeof(wfs_name))) {
if (GetLastError() != ERROR_NOT_READY) {
error_setg_win32(errp, GetLastError(), "failed to get volume info");
}
goto free;
}
fs = g_malloc(sizeof(*fs));
fs->name = g_strdup(guid);
fs->has_total_bytes = false;
fs->has_total_bytes_privileged = false;
fs->has_used_bytes = false;
if (len == 0) {
fs->mountpoint = g_strdup("System Reserved");
} else {
fs->mountpoint = g_strndup(mnt_point, len);
if (GetDiskFreeSpaceEx(fs->mountpoint,
(PULARGE_INTEGER) & i64FreeBytesToCaller,
(PULARGE_INTEGER) & i64TotalBytes,
(PULARGE_INTEGER) & i64FreeBytes)) {
fs->used_bytes = i64TotalBytes - i64FreeBytes;
fs->total_bytes = i64TotalBytes;
fs->has_total_bytes = true;
fs->has_used_bytes = true;
}
}
wcstombs(fs_name, wfs_name, sizeof(wfs_name));
fs->type = g_strdup(fs_name);
fs->disk = build_guest_disk_info(guid, errp);
free:
if (hLocalDiskHandle != INVALID_HANDLE_VALUE) {
CloseHandle(hLocalDiskHandle);
}
g_free(mnt_point);
return fs;
}
GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
{
HANDLE vol_h;
GuestFilesystemInfoList *ret = NULL;
char guid[256];
vol_h = FindFirstVolume(guid, sizeof(guid));
if (vol_h == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to find any volume");
return NULL;
}
do {
Error *local_err = NULL;
GuestFilesystemInfo *info = build_guest_fsinfo(guid, &local_err);
if (local_err) {
g_debug("failed to get filesystem info, ignoring error: %s",
error_get_pretty(local_err));
error_free(local_err);
continue;
}
QAPI_LIST_PREPEND(ret, info);
} while (FindNextVolume(vol_h, guid, sizeof(guid)));
if (GetLastError() != ERROR_NO_MORE_FILES) {
error_setg_win32(errp, GetLastError(), "failed to find next volume");
}
FindVolumeClose(vol_h);
return ret;
}
/*
* Return status of freeze/thaw
*/
GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
{
if (!vss_initialized()) {
error_setg(errp, "fsfreeze not possible as VSS failed to initialize");
return 0;
}
if (ga_is_frozen(ga_state)) {
return GUEST_FSFREEZE_STATUS_FROZEN;
}
return GUEST_FSFREEZE_STATUS_THAWED;
}
/*
* Freeze local file systems using Volume Shadow-copy Service.
* The frozen state is limited for up to 10 seconds by VSS.
*/
int64_t qmp_guest_fsfreeze_freeze(Error **errp)
{
return qmp_guest_fsfreeze_freeze_list(false, NULL, errp);
}
int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
strList *mountpoints,
Error **errp)
{
int i;
Error *local_err = NULL;
if (!vss_initialized()) {
error_setg(errp, "fsfreeze not possible as VSS failed to initialize");
return 0;
}
slog("guest-fsfreeze called");
/* cannot risk guest agent blocking itself on a write in this state */
ga_set_frozen(ga_state);
qga_vss_fsfreeze(&i, true, mountpoints, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto error;
}
return i;
error:
local_err = NULL;
qmp_guest_fsfreeze_thaw(&local_err);
if (local_err) {
g_debug("cleanup thaw: %s", error_get_pretty(local_err));
error_free(local_err);
}
return 0;
}
/*
* Thaw local file systems using Volume Shadow-copy Service.
*/
int64_t qmp_guest_fsfreeze_thaw(Error **errp)
{
int i;
if (!vss_initialized()) {
error_setg(errp, "fsfreeze not possible as VSS failed to initialize");
return 0;
}
qga_vss_fsfreeze(&i, false, NULL, errp);
ga_unset_frozen(ga_state);
slog("guest-fsthaw called");
return i;
}
static void guest_fsfreeze_cleanup(void)
{
Error *err = NULL;
if (!vss_initialized()) {
return;
}
if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
qmp_guest_fsfreeze_thaw(&err);
if (err) {
slog("failed to clean up frozen filesystems: %s",
error_get_pretty(err));
error_free(err);
}
}
vss_deinit(true);
}
/*
* Walk list of mounted file systems in the guest, and discard unused
* areas.
*/
GuestFilesystemTrimResponse *
qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
{
GuestFilesystemTrimResponse *resp;
HANDLE handle;
WCHAR guid[MAX_PATH] = L"";
OSVERSIONINFO osvi;
BOOL win8_or_later;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
win8_or_later = (osvi.dwMajorVersion > 6 ||
((osvi.dwMajorVersion == 6) &&
(osvi.dwMinorVersion >= 2)));
if (!win8_or_later) {
error_setg(errp, "fstrim is only supported for Win8+");
return NULL;
}
handle = FindFirstVolumeW(guid, ARRAYSIZE(guid));
if (handle == INVALID_HANDLE_VALUE) {
error_setg_win32(errp, GetLastError(), "failed to find any volume");
return NULL;
}
resp = g_new0(GuestFilesystemTrimResponse, 1);
do {
GuestFilesystemTrimResult *res;
PWCHAR uc_path;
DWORD char_count = 0;
char *path, *out;
GError *gerr = NULL;
gchar *argv[4];
GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count);
if (GetLastError() != ERROR_MORE_DATA) {
continue;
}
if (GetDriveTypeW(guid) != DRIVE_FIXED) {
continue;
}
uc_path = g_new(WCHAR, char_count);
if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count,
&char_count) || !*uc_path) {
/* strange, but this condition could be faced even with size == 2 */
g_free(uc_path);
continue;
}
res = g_new0(GuestFilesystemTrimResult, 1);
path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr);
g_free(uc_path);
if (!path) {
res->error = g_strdup(gerr->message);
g_error_free(gerr);
break;
}
res->path = path;
QAPI_LIST_PREPEND(resp->paths, res);
memset(argv, 0, sizeof(argv));
argv[0] = (gchar *)"defrag.exe";
argv[1] = (gchar *)"/L";
argv[2] = path;
if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
&out /* stdout */, NULL /* stdin */,
NULL, &gerr)) {
res->error = g_strdup(gerr->message);
g_error_free(gerr);
} else {
/* defrag.exe is UGLY. Exit code is ALWAYS zero.
Error is reported in the output with something like
(x89000020) etc code in the stdout */
int i;
gchar **lines = g_strsplit(out, "\r\n", 0);
g_free(out);
for (i = 0; lines[i] != NULL; i++) {
if (g_strstr_len(lines[i], -1, "(0x") == NULL) {
continue;
}
res->error = g_strdup(lines[i]);
break;
}
g_strfreev(lines);
}
} while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid)));
FindVolumeClose(handle);
return resp;
}
typedef enum {
GUEST_SUSPEND_MODE_DISK,
GUEST_SUSPEND_MODE_RAM
} GuestSuspendMode;
static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
{
SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
if (!GetPwrCapabilities(&sys_pwr_caps)) {
error_setg(errp, "failed to determine guest suspend capabilities");
return;
}
switch (mode) {
case GUEST_SUSPEND_MODE_DISK:
if (!sys_pwr_caps.SystemS4) {
error_setg(errp, "suspend-to-disk not supported by OS");
}
break;
case GUEST_SUSPEND_MODE_RAM:
if (!sys_pwr_caps.SystemS3) {
error_setg(errp, "suspend-to-ram not supported by OS");
}
break;
default:
abort();
}
}
static DWORD WINAPI do_suspend(LPVOID opaque)
{
GuestSuspendMode *mode = opaque;
DWORD ret = 0;
if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
g_autofree gchar *emsg = g_win32_error_message(GetLastError());
slog("failed to suspend guest: %s", emsg);
ret = -1;
}
g_free(mode);
return ret;
}
void qmp_guest_suspend_disk(Error **errp)
{
Error *local_err = NULL;
GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
*mode = GUEST_SUSPEND_MODE_DISK;
check_suspend_mode(*mode, &local_err);
if (local_err) {
goto out;
}
acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
if (local_err) {
goto out;
}
execute_async(do_suspend, mode, &local_err);
out:
if (local_err) {
error_propagate(errp, local_err);
g_free(mode);
}
}
void qmp_guest_suspend_ram(Error **errp)
{
Error *local_err = NULL;
GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
*mode = GUEST_SUSPEND_MODE_RAM;
check_suspend_mode(*mode, &local_err);
if (local_err) {
goto out;
}
acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
if (local_err) {
goto out;
}
execute_async(do_suspend, mode, &local_err);
out:
if (local_err) {
error_propagate(errp, local_err);
g_free(mode);
}
}
static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
{
IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
ULONG adptr_addrs_len = 0;
DWORD ret;
/* Call the first time to get the adptr_addrs_len. */
GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
NULL, adptr_addrs, &adptr_addrs_len);
adptr_addrs = g_malloc(adptr_addrs_len);
ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
NULL, adptr_addrs, &adptr_addrs_len);
if (ret != ERROR_SUCCESS) {
error_setg_win32(errp, ret, "failed to get adapters addresses");
g_free(adptr_addrs);
adptr_addrs = NULL;
}
return adptr_addrs;
}
static char *guest_wctomb_dup(WCHAR *wstr)
{
char *str;
size_t str_size;
str_size = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);
/* add 1 to str_size for NULL terminator */
str = g_malloc(str_size + 1);
WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, str_size, NULL, NULL);
return str;
}
static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
Error **errp)
{
char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
DWORD len;
int ret;
if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
len = sizeof(addr_str);
ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
ip_addr->Address.iSockaddrLength,
NULL,
addr_str,
&len);
if (ret != 0) {
error_setg_win32(errp, WSAGetLastError(),
"failed address presentation form conversion");
return NULL;
}
return g_strdup(addr_str);
}
return NULL;
}
static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
{
/* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
* field to obtain the prefix.
*/
return ip_addr->OnLinkPrefixLength;
}
#define INTERFACE_PATH_BUF_SZ 512
static DWORD get_interface_index(const char *guid)
{
ULONG index;
DWORD status;
wchar_t wbuf[INTERFACE_PATH_BUF_SZ];
snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid);
wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0;
status = GetAdapterIndex (wbuf, &index);
if (status != NO_ERROR) {
return (DWORD)~0;
} else {
return index;
}
}
typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row);
static int guest_get_network_stats(const char *name,
GuestNetworkInterfaceStat *stats)
{
OSVERSIONINFO os_ver;
os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&os_ver);
if (os_ver.dwMajorVersion >= 6) {
MIB_IF_ROW2 a_mid_ifrow;
GetIfEntry2Func getifentry2_ex;
DWORD if_index = 0;
HMODULE module = GetModuleHandle("iphlpapi");
PVOID func = GetProcAddress(module, "GetIfEntry2");
if (func == NULL) {
return -1;
}
getifentry2_ex = (GetIfEntry2Func)func;
if_index = get_interface_index(name);
if (if_index == (DWORD)~0) {
return -1;
}
memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
a_mid_ifrow.InterfaceIndex = if_index;
if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) {
stats->rx_bytes = a_mid_ifrow.InOctets;
stats->rx_packets = a_mid_ifrow.InUcastPkts;
stats->rx_errs = a_mid_ifrow.InErrors;
stats->rx_dropped = a_mid_ifrow.InDiscards;
stats->tx_bytes = a_mid_ifrow.OutOctets;
stats->tx_packets = a_mid_ifrow.OutUcastPkts;
stats->tx_errs = a_mid_ifrow.OutErrors;
stats->tx_dropped = a_mid_ifrow.OutDiscards;
return 0;
}
}
return -1;
}
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
{
IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
GuestNetworkInterfaceList *head = NULL, **tail = &head;
GuestIpAddressList *head_addr, **tail_addr;
GuestNetworkInterface *info;
GuestNetworkInterfaceStat *interface_stat = NULL;
GuestIpAddress *address_item = NULL;
unsigned char *mac_addr;
char *addr_str;
WORD wsa_version;
WSADATA wsa_data;
int ret;
adptr_addrs = guest_get_adapters_addresses(errp);
if (adptr_addrs == NULL) {
return NULL;
}
/* Make WSA APIs available. */
wsa_version = MAKEWORD(2, 2);
ret = WSAStartup(wsa_version, &wsa_data);
if (ret != 0) {
error_setg_win32(errp, ret, "failed socket startup");
goto out;
}
for (addr = adptr_addrs; addr; addr = addr->Next) {
info = g_malloc0(sizeof(*info));
QAPI_LIST_APPEND(tail, info);
info->name = guest_wctomb_dup(addr->FriendlyName);
if (addr->PhysicalAddressLength != 0) {
mac_addr = addr->PhysicalAddress;
info->hardware_address =
g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
(int) mac_addr[0], (int) mac_addr[1],
(int) mac_addr[2], (int) mac_addr[3],
(int) mac_addr[4], (int) mac_addr[5]);
}
head_addr = NULL;
tail_addr = &head_addr;
for (ip_addr = addr->FirstUnicastAddress;
ip_addr;
ip_addr = ip_addr->Next) {
addr_str = guest_addr_to_str(ip_addr, errp);
if (addr_str == NULL) {
continue;
}
address_item = g_malloc0(sizeof(*address_item));
QAPI_LIST_APPEND(tail_addr, address_item);
address_item->ip_address = addr_str;
address_item->prefix = guest_ip_prefix(ip_addr);
if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4;
} else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6;
}
}
if (head_addr) {
info->has_ip_addresses = true;
info->ip_addresses = head_addr;
}
if (!info->statistics) {
interface_stat = g_malloc0(sizeof(*interface_stat));
if (guest_get_network_stats(addr->AdapterName, interface_stat)
== -1) {
g_free(interface_stat);
} else {
info->statistics = interface_stat;
}
}
}
WSACleanup();
out:
g_free(adptr_addrs);
return head;
}
static int64_t filetime_to_ns(const FILETIME *tf)
{
return ((((int64_t)tf->dwHighDateTime << 32) | tf->dwLowDateTime)
- W32_FT_OFFSET) * 100;
}
void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
{
Error *local_err = NULL;
SYSTEMTIME ts;
FILETIME tf;
LONGLONG time;
if (!has_time) {
/* Unfortunately, Windows libraries don't provide an easy way to access
* RTC yet:
*
* https://msdn.microsoft.com/en-us/library/aa908981.aspx
*
* Instead, a workaround is to use the Windows win32tm command to
* resync the time using the Windows Time service.
*/
LPVOID msg_buffer;
DWORD ret_flags;
HRESULT hr = system("w32tm /resync /nowait");
if (GetLastError() != 0) {
strerror_s((LPTSTR) & msg_buffer, 0, errno);
error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer);
} else if (hr != 0) {
if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) {
error_setg(errp, "Windows Time service not running on the "
"guest");
} else {
if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
(DWORD)hr, MAKELANGID(LANG_NEUTRAL,
SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0,
NULL)) {
error_setg(errp, "w32tm failed with error (0x%lx), couldn'"
"t retrieve error message", hr);
} else {
error_setg(errp, "w32tm failed with error (0x%lx): %s", hr,
(LPCTSTR)msg_buffer);
LocalFree(msg_buffer);
}
}
} else if (!InternetGetConnectedState(&ret_flags, 0)) {
error_setg(errp, "No internet connection on guest, sync not "
"accurate");
}
return;
}
/* Validate time passed by user. */
if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
return;
}
time = time_ns / 100 + W32_FT_OFFSET;
tf.dwLowDateTime = (DWORD) time;
tf.dwHighDateTime = (DWORD) (time >> 32);
if (!FileTimeToSystemTime(&tf, &ts)) {
error_setg(errp, "Failed to convert system time %d",
(int)GetLastError());
return;
}
acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (!SetSystemTime(&ts)) {
error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
return;
}
}
GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
{
PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr;
DWORD length;
GuestLogicalProcessorList *head, **tail;
Error *local_err = NULL;
int64_t current;
ptr = pslpi = NULL;
length = 0;
current = 0;
head = NULL;
tail = &head;
if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) &&
(GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
(length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) {
ptr = pslpi = g_malloc0(length);
if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) {
error_setg(&local_err, "Failed to get processor information: %d",
(int)GetLastError());
}
} else {
error_setg(&local_err,
"Failed to get processor information buffer length: %d",
(int)GetLastError());
}
while ((local_err == NULL) && (length > 0)) {
if (pslpi->Relationship == RelationProcessorCore) {
ULONG_PTR cpu_bits = pslpi->ProcessorMask;
while (cpu_bits > 0) {
if (!!(cpu_bits & 1)) {
GuestLogicalProcessor *vcpu;
vcpu = g_malloc0(sizeof *vcpu);
vcpu->logical_id = current++;
vcpu->online = true;
vcpu->has_can_offline = true;
QAPI_LIST_APPEND(tail, vcpu);
}
cpu_bits >>= 1;
}
}
length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
pslpi++; /* next entry */
}
g_free(ptr);
if (local_err == NULL) {
if (head != NULL) {
return head;
}
/* there's no guest with zero VCPUs */
error_setg(&local_err, "Guest reported zero VCPUs");
}
qapi_free_GuestLogicalProcessorList(head);
error_propagate(errp, local_err);
return NULL;
}
static gchar *
get_net_error_message(gint error)
{
HMODULE module = NULL;
gchar *retval = NULL;
wchar_t *msg = NULL;
int flags;
size_t nchars;
flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS |
FORMAT_MESSAGE_FROM_SYSTEM;
if (error >= NERR_BASE && error <= MAX_NERR) {
module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
if (module != NULL) {
flags |= FORMAT_MESSAGE_FROM_HMODULE;
}
}
FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
if (msg != NULL) {
nchars = wcslen(msg);
if (nchars >= 2 &&
msg[nchars - 1] == L'\n' &&
msg[nchars - 2] == L'\r') {
msg[nchars - 2] = L'\0';
}
retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
LocalFree(msg);
}
if (module != NULL) {
FreeLibrary(module);
}
return retval;
}
void qmp_guest_set_user_password(const char *username,
const char *password,
bool crypted,
Error **errp)
{
NET_API_STATUS nas;
char *rawpasswddata = NULL;
size_t rawpasswdlen;
wchar_t *user = NULL, *wpass = NULL;
USER_INFO_1003 pi1003 = { 0, };
GError *gerr = NULL;
if (crypted) {
error_setg(errp, "'crypted' must be off on this host");
return;
}
rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
if (!rawpasswddata) {
return;
}
rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
rawpasswddata[rawpasswdlen] = '\0';
user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr);
if (!user) {
error_setg(errp, "can't convert 'username' to UTF-16: %s",
gerr->message);
g_error_free(gerr);
goto done;
}
wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr);
if (!wpass) {
error_setg(errp, "can't convert 'password' to UTF-16: %s",
gerr->message);
g_error_free(gerr);
goto done;
}
pi1003.usri1003_password = wpass;
nas = NetUserSetInfo(NULL, user,
1003, (LPBYTE)&pi1003,
NULL);
if (nas != NERR_Success) {
gchar *msg = get_net_error_message(nas);
error_setg(errp, "failed to set password: %s", msg);
g_free(msg);
}
done:
g_free(user);
g_free(wpass);
g_free(rawpasswddata);
}
/* register init/cleanup routines for stateful command groups */
void ga_command_state_init(GAState *s, GACommandState *cs)
{
if (!vss_initialized()) {
ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
}
}
/* MINGW is missing two fields: IncomingFrames & OutgoingFrames */
typedef struct _GA_WTSINFOA {
WTS_CONNECTSTATE_CLASS State;
DWORD SessionId;
DWORD IncomingBytes;
DWORD OutgoingBytes;
DWORD IncomingFrames;
DWORD OutgoingFrames;
DWORD IncomingCompressedBytes;
DWORD OutgoingCompressedBy;
CHAR WinStationName[WINSTATIONNAME_LENGTH];
CHAR Domain[DOMAIN_LENGTH];
CHAR UserName[USERNAME_LENGTH + 1];
LARGE_INTEGER ConnectTime;
LARGE_INTEGER DisconnectTime;
LARGE_INTEGER LastInputTime;
LARGE_INTEGER LogonTime;
LARGE_INTEGER CurrentTime;
} GA_WTSINFOA;
GuestUserList *qmp_guest_get_users(Error **errp)
{
#define QGA_NANOSECONDS 10000000
GHashTable *cache = NULL;
GuestUserList *head = NULL, **tail = &head;
DWORD buffer_size = 0, count = 0, i = 0;
GA_WTSINFOA *info = NULL;
WTS_SESSION_INFOA *entries = NULL;
GuestUser *user = NULL;
gpointer value = NULL;
INT64 login = 0;
double login_time = 0;
cache = g_hash_table_new(g_str_hash, g_str_equal);
if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) {
for (i = 0; i < count; ++i) {
buffer_size = 0;
info = NULL;
if (WTSQuerySessionInformationA(
NULL,
entries[i].SessionId,
WTSSessionInfo,
(LPSTR *)&info,
&buffer_size
)) {
if (strlen(info->UserName) == 0) {
WTSFreeMemory(info);
continue;
}
login = info->LogonTime.QuadPart;
login -= W32_FT_OFFSET;
login_time = ((double)login) / QGA_NANOSECONDS;
if (g_hash_table_contains(cache, info->UserName)) {
value = g_hash_table_lookup(cache, info->UserName);
user = (GuestUser *)value;
if (user->login_time > login_time) {
user->login_time = login_time;
}
} else {
user = g_new0(GuestUser, 1);
user->user = g_strdup(info->UserName);
user->domain = g_strdup(info->Domain);
user->login_time = login_time;
g_hash_table_add(cache, user->user);
QAPI_LIST_APPEND(tail, user);
}
}
WTSFreeMemory(info);
}
WTSFreeMemory(entries);
}
g_hash_table_destroy(cache);
return head;
}
typedef struct _ga_matrix_lookup_t {
int major;
int minor;
const char *version;
const char *version_id;
} ga_matrix_lookup_t;
static const ga_matrix_lookup_t WIN_CLIENT_VERSION_MATRIX[] = {
{ 5, 0, "Microsoft Windows 2000", "2000"},
{ 5, 1, "Microsoft Windows XP", "xp"},
{ 6, 0, "Microsoft Windows Vista", "vista"},
{ 6, 1, "Microsoft Windows 7" "7"},
{ 6, 2, "Microsoft Windows 8", "8"},
{ 6, 3, "Microsoft Windows 8.1", "8.1"},
{ }
};
static const ga_matrix_lookup_t WIN_SERVER_VERSION_MATRIX[] = {
{ 5, 2, "Microsoft Windows Server 2003", "2003"},
{ 6, 0, "Microsoft Windows Server 2008", "2008"},
{ 6, 1, "Microsoft Windows Server 2008 R2", "2008r2"},
{ 6, 2, "Microsoft Windows Server 2012", "2012"},
{ 6, 3, "Microsoft Windows Server 2012 R2", "2012r2"},
{ },
};
typedef struct _ga_win_10_0_t {
int first_build;
const char *version;
const char *version_id;
} ga_win_10_0_t;
static const ga_win_10_0_t WIN_10_0_SERVER_VERSION_MATRIX[] = {
{14393, "Microsoft Windows Server 2016", "2016"},
{17763, "Microsoft Windows Server 2019", "2019"},
{20344, "Microsoft Windows Server 2022", "2022"},
{26040, "Microsoft Windows Server 2025", "2025"},
{ }
};
static const ga_win_10_0_t WIN_10_0_CLIENT_VERSION_MATRIX[] = {
{10240, "Microsoft Windows 10", "10"},
{22000, "Microsoft Windows 11", "11"},
{ }
};
static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
{
typedef NTSTATUS(WINAPI *rtl_get_version_t)(
RTL_OSVERSIONINFOEXW *os_version_info_ex);
info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
HMODULE module = GetModuleHandle("ntdll");
PVOID fun = GetProcAddress(module, "RtlGetVersion");
if (fun == NULL) {
error_setg(errp, "Failed to get address of RtlGetVersion");
return;
}
rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun;
rtl_get_version(info);
}
static char *ga_get_win_name(const OSVERSIONINFOEXW *os_version, bool id)
{
DWORD major = os_version->dwMajorVersion;
DWORD minor = os_version->dwMinorVersion;
DWORD build = os_version->dwBuildNumber;
int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
const ga_matrix_lookup_t *table = tbl_idx ?
WIN_SERVER_VERSION_MATRIX : WIN_CLIENT_VERSION_MATRIX;
const ga_win_10_0_t *win_10_0_table = tbl_idx ?
WIN_10_0_SERVER_VERSION_MATRIX : WIN_10_0_CLIENT_VERSION_MATRIX;
const ga_win_10_0_t *win_10_0_version = NULL;
while (table->version != NULL) {
if (major == 10 && minor == 0) {
while (win_10_0_table->version != NULL) {
if (build >= win_10_0_table->first_build) {
win_10_0_version = win_10_0_table;
}
win_10_0_table++;
}
if (win_10_0_table) {
if (id) {
return g_strdup(win_10_0_version->version_id);
} else {
return g_strdup(win_10_0_version->version);
}
}
} else if (major == table->major && minor == table->minor) {
if (id) {
return g_strdup(table->version_id);
} else {
return g_strdup(table->version);
}
}
++table;
}
slog("failed to lookup Windows version: major=%lu, minor=%lu",
major, minor);
return g_strdup("N/A");
}
static char *ga_get_win_product_name(Error **errp)
{
HKEY key = INVALID_HANDLE_VALUE;
DWORD size = 128;
char *result = g_malloc0(size);
LONG err = ERROR_SUCCESS;
err = RegOpenKeyA(HKEY_LOCAL_MACHINE,
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
&key);
if (err != ERROR_SUCCESS) {
error_setg_win32(errp, err, "failed to open registry key");
g_free(result);
return NULL;
}
err = RegQueryValueExA(key, "ProductName", NULL, NULL,
(LPBYTE)result, &size);
if (err == ERROR_MORE_DATA) {
slog("ProductName longer than expected (%lu bytes), retrying",
size);
g_free(result);
result = NULL;
if (size > 0) {
result = g_malloc0(size);
err = RegQueryValueExA(key, "ProductName", NULL, NULL,
(LPBYTE)result, &size);
}
}
if (err != ERROR_SUCCESS) {
error_setg_win32(errp, err, "failed to retrieve ProductName");
goto fail;
}
RegCloseKey(key);
return result;
fail:
if (key != INVALID_HANDLE_VALUE) {
RegCloseKey(key);
}
g_free(result);
return NULL;
}
static char *ga_get_current_arch(void)
{
SYSTEM_INFO info;
GetNativeSystemInfo(&info);
char *result = NULL;
switch (info.wProcessorArchitecture) {
case PROCESSOR_ARCHITECTURE_AMD64:
result = g_strdup("x86_64");
break;
case PROCESSOR_ARCHITECTURE_ARM:
result = g_strdup("arm");
break;
case PROCESSOR_ARCHITECTURE_IA64:
result = g_strdup("ia64");
break;
case PROCESSOR_ARCHITECTURE_INTEL:
result = g_strdup("x86");
break;
case PROCESSOR_ARCHITECTURE_UNKNOWN:
default:
slog("unknown processor architecture 0x%0x",
info.wProcessorArchitecture);
result = g_strdup("unknown");
break;
}
return result;
}
GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
{
Error *local_err = NULL;
OSVERSIONINFOEXW os_version = {0};
bool server;
char *product_name;
GuestOSInfo *info;
ga_get_win_version(&os_version, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return NULL;
}
server = os_version.wProductType != VER_NT_WORKSTATION;
product_name = ga_get_win_product_name(errp);
if (product_name == NULL) {
return NULL;
}
info = g_new0(GuestOSInfo, 1);
info->kernel_version = g_strdup_printf("%lu.%lu",
os_version.dwMajorVersion,
os_version.dwMinorVersion);
info->kernel_release = g_strdup_printf("%lu",
os_version.dwBuildNumber);
info->machine = ga_get_current_arch();
info->id = g_strdup("mswindows");
info->name = g_strdup("Microsoft Windows");
info->pretty_name = product_name;
info->version = ga_get_win_name(&os_version, false);
info->version_id = ga_get_win_name(&os_version, true);
info->variant = g_strdup(server ? "server" : "client");
info->variant_id = g_strdup(server ? "server" : "client");
return info;
}
/*
* Safely get device property. Returned strings are using wide characters.
* Caller is responsible for freeing the buffer.
*/
static LPBYTE cm_get_property(DEVINST devInst, const DEVPROPKEY *propName,
PDEVPROPTYPE propType)
{
CONFIGRET cr;
g_autofree LPBYTE buffer = NULL;
ULONG buffer_len = 0;
/* First query for needed space */
cr = CM_Get_DevNode_PropertyW(devInst, propName, propType,
buffer, &buffer_len, 0);
if (cr != CR_SUCCESS && cr != CR_BUFFER_SMALL) {
slog("failed to get property size, error=0x%lx", cr);
return NULL;
}
buffer = g_new0(BYTE, buffer_len + 1);
cr = CM_Get_DevNode_PropertyW(devInst, propName, propType,
buffer, &buffer_len, 0);
if (cr != CR_SUCCESS) {
slog("failed to get device property, error=0x%lx", cr);
return NULL;
}
return g_steal_pointer(&buffer);
}
static GStrv ga_get_hardware_ids(DEVINST devInstance)
{
GArray *values = NULL;
DEVPROPTYPE cm_type;
LPWSTR id;
g_autofree LPWSTR property = (LPWSTR)cm_get_property(devInstance,
&qga_DEVPKEY_Device_HardwareIds, &cm_type);
if (property == NULL) {
slog("failed to get hardware IDs");
return NULL;
}
if (*property == '\0') {
/* empty list */
return NULL;
}
values = g_array_new(TRUE, TRUE, sizeof(gchar *));
for (id = property; '\0' != *id; id += lstrlenW(id) + 1) {
gchar *id8 = g_utf16_to_utf8(id, -1, NULL, NULL, NULL);
g_array_append_val(values, id8);
}
return (GStrv)g_array_free(values, FALSE);
}
/*
* https://docs.microsoft.com/en-us/windows-hardware/drivers/install/identifiers-for-pci-devices
*/
#define DEVICE_PCI_RE "PCI\\\\VEN_(1AF4|1B36)&DEV_([0-9A-B]{4})(&|$)"
GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
{
GuestDeviceInfoList *head = NULL, **tail = &head;
HDEVINFO dev_info = INVALID_HANDLE_VALUE;
SP_DEVINFO_DATA dev_info_data;
int i, j;
GError *gerr = NULL;
g_autoptr(GRegex) device_pci_re = NULL;
DEVPROPTYPE cm_type;
device_pci_re = g_regex_new(DEVICE_PCI_RE,
G_REGEX_ANCHORED | G_REGEX_OPTIMIZE, 0,
&gerr);
g_assert(device_pci_re != NULL);
dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
dev_info = SetupDiGetClassDevs(0, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES);
if (dev_info == INVALID_HANDLE_VALUE) {
error_setg(errp, "failed to get device tree");
return NULL;
}
slog("enumerating devices");
for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
bool skip = true;
g_autofree LPWSTR name = NULL;
g_autofree LPFILETIME date = NULL;
g_autofree LPWSTR version = NULL;
g_auto(GStrv) hw_ids = NULL;
g_autoptr(GuestDeviceInfo) device = g_new0(GuestDeviceInfo, 1);
g_autofree char *vendor_id = NULL;
g_autofree char *device_id = NULL;
name = (LPWSTR)cm_get_property(dev_info_data.DevInst,
&qga_DEVPKEY_NAME, &cm_type);
if (name == NULL) {
slog("failed to get device description");
continue;
}
device->driver_name = g_utf16_to_utf8(name, -1, NULL, NULL, NULL);
if (device->driver_name == NULL) {
error_setg(errp, "conversion to utf8 failed (driver name)");
return NULL;
}
slog("querying device: %s", device->driver_name);
hw_ids = ga_get_hardware_ids(dev_info_data.DevInst);
if (hw_ids == NULL) {
continue;
}
for (j = 0; hw_ids[j] != NULL; j++) {
g_autoptr(GMatchInfo) match_info;
GuestDeviceIdPCI *id;
if (!g_regex_match(device_pci_re, hw_ids[j], 0, &match_info)) {
continue;
}
skip = false;
vendor_id = g_match_info_fetch(match_info, 1);
device_id = g_match_info_fetch(match_info, 2);
device->id = g_new0(GuestDeviceId, 1);
device->id->type = GUEST_DEVICE_TYPE_PCI;
id = &device->id->u.pci;
id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16);
id->device_id = g_ascii_strtoull(device_id, NULL, 16);
break;
}
if (skip) {
continue;
}
version = (LPWSTR)cm_get_property(dev_info_data.DevInst,
&qga_DEVPKEY_Device_DriverVersion, &cm_type);
if (version == NULL) {
slog("failed to get driver version");
continue;
}
device->driver_version = g_utf16_to_utf8(version, -1, NULL,
NULL, NULL);
if (device->driver_version == NULL) {
error_setg(errp, "conversion to utf8 failed (driver version)");
return NULL;
}
date = (LPFILETIME)cm_get_property(dev_info_data.DevInst,
&qga_DEVPKEY_Device_DriverDate, &cm_type);
if (date == NULL) {
slog("failed to get driver date");
continue;
}
device->driver_date = filetime_to_ns(date);
device->has_driver_date = true;
slog("driver: %s\ndriver version: %" PRId64 ",%s\n",
device->driver_name, device->driver_date,
device->driver_version);
QAPI_LIST_APPEND(tail, g_steal_pointer(&device));
}
if (dev_info != INVALID_HANDLE_VALUE) {
SetupDiDestroyDeviceInfoList(dev_info);
}
return head;
}
char *qga_get_host_name(Error **errp)
{
wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1];
DWORD size = G_N_ELEMENTS(tmp);
if (GetComputerNameW(tmp, &size) == 0) {
error_setg_win32(errp, GetLastError(), "failed close handle");
return NULL;
}
return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL);
}