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qemu-ga patch queue for soft-freeze 

* support for --retry-path option for recovering from communication
   path failures
 * support for serial/device name in guest-get-fsinfo for linux/w32
 * support for freezing individual mount points in guest-fsfreeze-*
 * fixes for unicode paths on w32, not-present vcpus in guest-get-vcpus,
   buffer overflow in guest-get-fsinfo for w32, and other minor fixes
 
 v3:
 * remove redundant check for --static in configure
 * correct authorship on "qga-win: add debugging information"
 
 v2:
 * set libudev=off in configure for static builds
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Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2018-10-30-v3-tag' into staging

qemu-ga patch queue for soft-freeze

* support for --retry-path option for recovering from communication
  path failures
* support for serial/device name in guest-get-fsinfo for linux/w32
* support for freezing individual mount points in guest-fsfreeze-*
* fixes for unicode paths on w32, not-present vcpus in guest-get-vcpus,
  buffer overflow in guest-get-fsinfo for w32, and other minor fixes

v3:
* remove redundant check for --static in configure
* correct authorship on "qga-win: add debugging information"

v2:
* set libudev=off in configure for static builds

# gpg: Signature made Wed 31 Oct 2018 14:13:58 GMT
# gpg:                using RSA key 3353C9CEF108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>"
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2018-10-30-v3-tag: (24 commits)
  qga-win: changing --retry-path option behavior
  qga-win: report specific error when failing to open channel
  qga-win: install service with --retry-path set by default
  qga: add --retry-path option for re-initializing channel on failure
  qga: move w32 service handling out of run_agent()
  qga: hang GAConfig/socket_activation off of GAState global
  qga: group agent init/cleanup init separate routines
  qga: fix an off-by-one issue
  qga-win: demystify namespace stripping
  qga-win: return disk device in guest-get-fsinfo
  qga-win: handle multi-disk volumes
  qga-win: refactor disk info
  qga-win: report disk serial number
  qga-win: refactor disk properties (bus)
  qga-win: add debugging information
  build: rename CONFIG_QGA_NTDDDISK to CONFIG_QGA_NTDDSCSI
  qga-win: fsinfo: pci-info: allow partial info
  qga-win: prevent crash when executing fsinfo command
  qga: linux: return disk device in guest-get-fsinfo
  qga: linux: report disk serial number
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2018-11-01 17:26:16 +00:00
parent 00878c9516 b70d6afe4d
commit f96a3165ab
13 changed files with 699 additions and 223 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
configure vendored
View File

@ -474,6 +474,7 @@ libxml2=""
docker="no"
debug_mutex="no"
libpmem=""
libudev="no"
# cross compilers defaults, can be overridden with --cross-cc-ARCH
cross_cc_aarch64="aarch64-linux-gnu-gcc"
@ -870,6 +871,7 @@ Linux)
vhost_vsock="yes"
QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers $QEMU_INCLUDES"
supported_os="yes"
libudev="yes"
;;
esac
@ -5609,6 +5611,17 @@ if test "$libnfs" != "no" ; then
fi
fi
##########################################
# Do we have libudev
if test "$libudev" != "no" ; then
if $pkg_config libudev && test "$static" != "yes"; then
libudev="yes"
libudev_libs=$($pkg_config --libs libudev)
else
libudev="no"
fi
fi
# Now we've finished running tests it's OK to add -Werror to the compiler flags
if test "$werror" = "yes"; then
QEMU_CFLAGS="-Werror $QEMU_CFLAGS"
@ -6033,6 +6046,7 @@ echo "VxHS block device $vxhs"
echo "capstone $capstone"
echo "docker $docker"
echo "libpmem support $libpmem"
echo "libudev $libudev"
if test "$sdl_too_old" = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have SDL support"
@ -6128,7 +6142,7 @@ if test "$mingw32" = "yes" ; then
echo "WIN_SDK=\"$win_sdk\"" >> $config_host_mak
fi
if test "$guest_agent_ntddscsi" = "yes" ; then
echo "CONFIG_QGA_NTDDDISK=y" >> $config_host_mak
echo "CONFIG_QGA_NTDDSCSI=y" >> $config_host_mak
fi
if test "$guest_agent_msi" = "yes"; then
echo "QEMU_GA_MSI_ENABLED=yes" >> $config_host_mak
@ -6868,6 +6882,11 @@ if test "$docker" != "no"; then
echo "HAVE_USER_DOCKER=y" >> $config_host_mak
fi
if test "$libudev" != "no"; then
echo "CONFIG_LIBUDEV=y" >> $config_host_mak
echo "LIBUDEV_LIBS=$libudev_libs" >> $config_host_mak
fi
# use included Linux headers
if test "$linux" = "yes" ; then
mkdir -p linux-headers

1
qga/Makefile.objs
View File

@ -1,3 +1,4 @@
commands-posix.o-libs := $(LIBUDEV_LIBS)
qga-obj-y = commands.o guest-agent-command-state.o main.o
qga-obj-$(CONFIG_POSIX) += commands-posix.o channel-posix.o
qga-obj-$(CONFIG_WIN32) += commands-win32.o channel-win32.o service-win32.o

3
qga/channel-win32.c
View File

@ -302,7 +302,8 @@ static gboolean ga_channel_open(GAChannel *c, GAChannelMethod method,
OPEN_EXISTING,
FILE_FLAG_NO_BUFFERING | FILE_FLAG_OVERLAPPED, NULL);
if (c->handle == INVALID_HANDLE_VALUE) {
g_critical("error opening path %s", newpath);
g_critical("error opening path %s: %s", newpath,
g_win32_error_message(GetLastError()));
return false;
}

148
qga/commands-posix.c
View File

@ -48,6 +48,10 @@ extern char **environ;
#include <net/if.h>
#include <sys/statvfs.h>
#ifdef CONFIG_LIBUDEV
#include <libudev.h>
#endif
#ifdef FIFREEZE
#define CONFIG_FSFREEZE
#endif
@ -872,6 +876,10 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
GuestDiskAddressList *list = NULL;
bool has_ata = false, has_host = false, has_tgt = false;
char *p, *q, *driver = NULL;
#ifdef CONFIG_LIBUDEV
struct udev *udev = NULL;
struct udev_device *udevice = NULL;
#endif
p = strstr(syspath, "/devices/pci");
if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n",
@ -936,6 +944,26 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
list = g_malloc0(sizeof(*list));
list->value = disk;
#ifdef CONFIG_LIBUDEV
udev = udev_new();
udevice = udev_device_new_from_syspath(udev, syspath);
if (udev == NULL || udevice == NULL) {
g_debug("failed to query udev");
} else {
const char *devnode, *serial;
devnode = udev_device_get_devnode(udevice);
if (devnode != NULL) {
disk->dev = g_strdup(devnode);
disk->has_dev = true;
}
serial = udev_device_get_property_value(udevice, "ID_SERIAL");
if (serial != NULL && *serial != 0) {
disk->serial = g_strdup(serial);
disk->has_serial = true;
}
}
#endif
if (strcmp(driver, "ata_piix") == 0) {
/* a host per ide bus, target*:0:<unit>:0 */
if (!has_host || !has_tgt) {
@ -995,14 +1023,19 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
list->next = fs->disk;
fs->disk = list;
g_free(driver);
return;
goto out;
cleanup:
if (list) {
qapi_free_GuestDiskAddressList(list);
}
out:
g_free(driver);
#ifdef CONFIG_LIBUDEV
udev_unref(udev);
udev_device_unref(udevice);
#endif
return;
}
static void build_guest_fsinfo_for_device(char const *devpath,
@ -2035,61 +2068,56 @@ static long sysconf_exact(int name, const char *name_str, Error **errp)
* Written members remain unmodified on error.
*/
static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu,
Error **errp)
char *dirpath, Error **errp)
{
char *dirpath;
int fd;
int res;
int dirfd;
static const char fn[] = "online";
dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
vcpu->logical_id);
dirfd = open(dirpath, O_RDONLY | O_DIRECTORY);
if (dirfd == -1) {
error_setg_errno(errp, errno, "open(\"%s\")", dirpath);
return;
}
fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR);
if (fd == -1) {
if (errno != ENOENT) {
error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn);
} else if (sys2vcpu) {
vcpu->online = true;
vcpu->can_offline = false;
} else if (!vcpu->online) {
error_setg(errp, "logical processor #%" PRId64 " can't be "
"offlined", vcpu->logical_id);
} /* otherwise pretend successful re-onlining */
} else {
static const char fn[] = "online";
int fd;
int res;
unsigned char status;
fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR);
if (fd == -1) {
if (errno != ENOENT) {
error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn);
} else if (sys2vcpu) {
vcpu->online = true;
vcpu->can_offline = false;
} else if (!vcpu->online) {
error_setg(errp, "logical processor #%" PRId64 " can't be "
"offlined", vcpu->logical_id);
} /* otherwise pretend successful re-onlining */
} else {
unsigned char status;
res = pread(fd, &status, 1, 0);
if (res == -1) {
error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn);
} else if (res == 0) {
error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath,
fn);
} else if (sys2vcpu) {
vcpu->online = (status != '0');
vcpu->can_offline = true;
} else if (vcpu->online != (status != '0')) {
status = '0' + vcpu->online;
if (pwrite(fd, &status, 1, 0) == -1) {
error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath,
fn);
}
} /* otherwise pretend successful re-(on|off)-lining */
res = pread(fd, &status, 1, 0);
if (res == -1) {
error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn);
} else if (res == 0) {
error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath,
fn);
} else if (sys2vcpu) {
vcpu->online = (status != '0');
vcpu->can_offline = true;
} else if (vcpu->online != (status != '0')) {
status = '0' + vcpu->online;
if (pwrite(fd, &status, 1, 0) == -1) {
error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath,
fn);
}
} /* otherwise pretend successful re-(on|off)-lining */
res = close(fd);
g_assert(res == 0);
}
res = close(dirfd);
res = close(fd);
g_assert(res == 0);
}
g_free(dirpath);
res = close(dirfd);
g_assert(res == 0);
}
GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
@ -2107,17 +2135,21 @@ GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
while (local_err == NULL && current < sc_max) {
GuestLogicalProcessor *vcpu;
GuestLogicalProcessorList *entry;
int64_t id = current++;
char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
id);
vcpu = g_malloc0(sizeof *vcpu);
vcpu->logical_id = current++;
vcpu->has_can_offline = true; /* lolspeak ftw */
transfer_vcpu(vcpu, true, &local_err);
entry = g_malloc0(sizeof *entry);
entry->value = vcpu;
*link = entry;
link = &entry->next;
if (g_file_test(path, G_FILE_TEST_EXISTS)) {
vcpu = g_malloc0(sizeof *vcpu);
vcpu->logical_id = id;
vcpu->has_can_offline = true; /* lolspeak ftw */
transfer_vcpu(vcpu, true, path, &local_err);
entry = g_malloc0(sizeof *entry);
entry->value = vcpu;
*link = entry;
link = &entry->next;
}
g_free(path);
}
if (local_err == NULL) {
@ -2138,7 +2170,11 @@ int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
processed = 0;
while (vcpus != NULL) {
transfer_vcpu(vcpus->value, false, &local_err);
char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
vcpus->value->logical_id);
transfer_vcpu(vcpus->value, false, path, &local_err);
g_free(path);
if (local_err != NULL) {
break;
}

357
qga/commands-win32.c
View File

@ -89,6 +89,12 @@ static OpenFlags guest_file_open_modes[] = {
{"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;
@ -160,13 +166,15 @@ static void handle_set_nonblocking(HANDLE fh)
int64_t qmp_guest_file_open(const char *path, bool has_mode,
const char *mode, Error **errp)
{
int64_t fd;
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 (!has_mode) {
mode = "r";
@ -175,16 +183,21 @@ int64_t qmp_guest_file_open(const char *path, bool has_mode,
guest_flags = find_open_flag(mode);
if (guest_flags == NULL) {
error_setg(errp, "invalid file open mode");
return -1;
goto done;
}
fh = CreateFile(path, guest_flags->desired_access, share_mode, sa_attr,
w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr);
if (!w_path) {
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);
return -1;
goto done;
}
/* set fd non-blocking to avoid common use cases (like reading from a
@ -196,10 +209,17 @@ int64_t qmp_guest_file_open(const char *path, bool has_mode,
if (fd < 0) {
CloseHandle(fh);
error_setg(errp, "failed to add handle to qmp handle table");
return -1;
goto done;
}
slog("guest-file-open, handle: % " PRId64, fd);
done:
if (gerr) {
error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
g_error_free(gerr);
}
g_free(w_path);
return fd;
}
@ -465,15 +485,32 @@ static STORAGE_BUS_TYPE win2qemu[] = {
static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
{
if (bus > ARRAY_SIZE(win2qemu) || (int)bus < 0) {
if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) {
return GUEST_DISK_BUS_TYPE_UNKNOWN;
}
return win2qemu[(int)bus];
}
/* XXX: The following function is BROKEN!
*
* It does not work and probably has never worked. When we query for list of
* disks we get cryptic names like "\Device\0000001d" instead of
* "\PhysicalDriveX" or "\HarddiskX". Whether the names can be translated one
* way or the other for comparison is an open question.
*
* When we query volume names (the original version) we are able to match those
* but then the property queries report error "Invalid function". (duh!)
*/
/*
DEFINE_GUID(GUID_DEVINTERFACE_VOLUME,
0x53f5630dL, 0xb6bf, 0x11d0, 0x94, 0xf2,
0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
*/
DEFINE_GUID(GUID_DEVINTERFACE_DISK,
0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2,
0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
{
@ -484,23 +521,38 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
char dev_name[MAX_PATH];
char *buffer = NULL;
GuestPCIAddress *pci = NULL;
char *name = g_strdup(&guid[4]);
char *name = NULL;
bool partial_pci = false;
pci = g_malloc0(sizeof(*pci));
pci->domain = -1;
pci->slot = -1;
pci->function = -1;
pci->bus = -1;
if (g_str_has_prefix(guid, "\\\\.\\") ||
g_str_has_prefix(guid, "\\\\?\\")) {
name = g_strdup(guid + 4);
} else {
name = g_strdup(guid);
}
if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) {
error_setg_win32(errp, GetLastError(), "failed to get dos device name");
goto out;
}
dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_VOLUME, 0, 0,
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 out;
}
g_debug("enumerating devices");
dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
DWORD addr, bus, slot, func, dev, data, size2;
DWORD addr, bus, slot, data, size2;
int func, dev;
while (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
SPDRP_PHYSICAL_DEVICE_OBJECT_NAME,
&data, (PBYTE)buffer, size,
@ -522,6 +574,7 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
if (g_strcmp0(buffer, dev_name)) {
continue;
}
g_debug("found device %s", dev_name);
/* There is no need to allocate buffer in the next functions. The size
* is known and ULONG according to
@ -530,21 +583,27 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
*/
if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
SPDRP_BUSNUMBER, &data, (PBYTE)&bus, size, NULL)) {
break;
debug_error("failed to get 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, &data, (PBYTE)&addr, size, NULL)) {
break;
debug_error("failed to get 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, &data, (PBYTE)&slot, size, NULL)) {
break;
debug_error("failed to get slot");
slot = -1;
partial_pci = true;
}
/* SetupApi gives us the same information as driver with
@ -554,13 +613,19 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
* DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF);
* SPDRP_ADDRESS is propertyAddress, so we do the same.*/
func = addr & 0x0000FFFF;
dev = (addr >> 16) & 0x0000FFFF;
pci = g_malloc0(sizeof(*pci));
pci->domain = dev;
pci->slot = slot;
pci->function = func;
pci->bus = bus;
if (partial_pci) {
pci->domain = -1;
pci->slot = -1;
pci->function = -1;
pci->bus = -1;
} else {
func = ((int) addr == -1) ? -1 : addr & 0x0000FFFF;
dev = ((int) addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF;
pci->domain = dev;
pci->slot = (int) slot;
pci->function = func;
pci->bus = (int) bus;
}
break;
}
@ -572,25 +637,119 @@ out:
return pci;
}
static int get_disk_bus_type(HANDLE vol_h, Error **errp)
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;
dev_desc->Size = sizeof(buf);
query.PropertyId = StorageDeviceProperty;
query.QueryType = PropertyStandardQuery;
if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
dev_desc->Size, &received, NULL)) {
size, &received, NULL)) {
error_setg_win32(errp, GetLastError(), "failed to get bus type");
return -1;
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);
disk->has_serial = true;
}
}
out_free:
g_free(dev_desc);
return;
}
static void get_single_disk_info(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;
}
return dev_desc->BusType;
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
*/
disk->pci_controller = get_pci_info(disk->dev, &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
#if (_WIN32_WINNT >= 0x0600)
/* This bus type is not supported before Windows Server 2003 SP1 */
|| disk->bus_type == GUEST_DISK_BUS_TYPE_SAS
#endif
) {
/* 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 pci-controller 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);
return;
}
/* VSS provider works with volumes, thus there is no difference if
@ -598,59 +757,108 @@ static int get_disk_bus_type(HANDLE vol_h, Error **errp)
* volume is returned for the spanned disk group (LVM) */
static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
{
GuestDiskAddressList *list = NULL;
GuestDiskAddress *disk;
SCSI_ADDRESS addr, *scsi_ad;
DWORD len;
int bus;
Error *local_err = NULL;
GuestDiskAddressList *list = NULL, *cur_item = NULL;
GuestDiskAddress *disk = NULL;
int i;
HANDLE vol_h;
DWORD size;
PVOLUME_DISK_EXTENTS extents = NULL;
scsi_ad = &addr;
char *name = g_strndup(guid, strlen(guid)-1);
/* 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_free;
goto out;
}
bus = get_disk_bus_type(vol_h, errp);
if (bus < 0) {
goto out_close;
}
disk = g_malloc0(sizeof(*disk));
disk->bus_type = find_bus_type(bus);
if (bus == BusTypeScsi || bus == BusTypeAta || bus == BusTypeRAID
#if (_WIN32_WINNT >= 0x0600)
/* This bus type is not supported before Windows Server 2003 SP1 */
|| bus == BusTypeSas
#endif
) {
/* 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 */
if (DeviceIoControl(vol_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;
disk->pci_controller = get_pci_info(name, errp);
/* 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, NULL, NULL)) {
DWORD last_err = GetLastError();
if (last_err == ERROR_MORE_DATA) {
/* Try once more with big enough buffer */
size = sizeof(VOLUME_DISK_EXTENTS)
+ extents->NumberOfDiskExtents*sizeof(DISK_EXTENT);
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");
return NULL;
}
} 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_malloc0(sizeof(GuestDiskAddress));
disk->has_dev = true;
disk->dev = g_strdup(name);
get_single_disk_info(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;
}
list = g_malloc0(sizeof(*list));
list->value = disk;
disk = NULL;
list->next = NULL;
goto out;
} else {
error_setg_win32(errp, GetLastError(),
"failed to get disk extents");
goto out;
}
/* We do not set error in this case, because we still have enough
* information about volume. */
} else {
disk->pci_controller = NULL;
}
g_debug("Number of extents: %lu", extents->NumberOfDiskExtents);
/* Go through each extent */
for (i = 0; i < extents->NumberOfDiskExtents; i++) {
disk = g_malloc0(sizeof(GuestDiskAddress));
/* 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->has_dev = true;
disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
extents->Extents[i].DiskNumber);
get_single_disk_info(disk, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
}
cur_item = g_malloc0(sizeof(*list));
cur_item->value = disk;
disk = NULL;
cur_item->next = list;
list = cur_item;
}
list = g_malloc0(sizeof(*list));
list->value = disk;
list->next = NULL;
out_close:
CloseHandle(vol_h);
out_free:
out:
qapi_free_GuestDiskAddress(disk);
g_free(extents);
g_free(name);
return list;
}
@ -776,6 +984,13 @@ GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
* 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;
@ -790,7 +1005,7 @@ int64_t qmp_guest_fsfreeze_freeze(Error **errp)
/* cannot risk guest agent blocking itself on a write in this state */
ga_set_frozen(ga_state);
qga_vss_fsfreeze(&i, true, &local_err);
qga_vss_fsfreeze(&i, true, mountpoints, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto error;
@ -808,15 +1023,6 @@ error:
return 0;
}
int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
strList *mountpoints,
Error **errp)
{
error_setg(errp, QERR_UNSUPPORTED);
return 0;
}
/*
* Thaw local file systems using Volume Shadow-copy Service.
*/
@ -829,7 +1035,7 @@ int64_t qmp_guest_fsfreeze_thaw(Error **errp)
return 0;
}
qga_vss_fsfreeze(&i, false, errp);
qga_vss_fsfreeze(&i, false, NULL, errp);
ga_unset_frozen(ga_state);
return i;
@ -1646,7 +1852,6 @@ GList *ga_command_blacklist_init(GList *blacklist)
"guest-set-vcpus",
"guest-get-memory-blocks", "guest-set-memory-blocks",
"guest-get-memory-block-size",
"guest-fsfreeze-freeze-list",
NULL};
char **p = (char **)list_unsupported;

2
qga/installer/qemu-ga.wxs
View File

@ -78,7 +78,7 @@
Account="LocalSystem"
ErrorControl="ignore"
Interactive="no"
Arguments="-d"
Arguments="-d --retry-path"
>
</ServiceInstall>
<ServiceControl Id="StartService" Start="install" Stop="both" Remove="uninstall" Name="QEMU-GA" Wait="no" />

268
qga/main.c
View File

@ -34,6 +34,7 @@
#include "qemu/systemd.h"
#include "qemu-version.h"
#ifdef _WIN32
#include <dbt.h>
#include "qga/service-win32.h"
#include "qga/vss-win32.h"
#endif
@ -58,6 +59,7 @@
#endif
#define QGA_SENTINEL_BYTE 0xFF
#define QGA_CONF_DEFAULT CONFIG_QEMU_CONFDIR G_DIR_SEPARATOR_S "qemu-ga.conf"
#define QGA_RETRY_INTERVAL 5
static struct {
const char *state_dir;
@ -69,6 +71,8 @@ typedef struct GAPersistentState {
int64_t fd_counter;
} GAPersistentState;
typedef struct GAConfig GAConfig;
struct GAState {
JSONMessageParser parser;
GMainLoop *main_loop;
@ -80,6 +84,7 @@ struct GAState {
bool logging_enabled;
#ifdef _WIN32
GAService service;
HANDLE wakeup_event;
#endif
bool delimit_response;
bool frozen;
@ -94,6 +99,9 @@ struct GAState {
#endif
gchar *pstate_filepath;
GAPersistentState pstate;
GAConfig *config;
int socket_activation;
bool force_exit;
};
struct GAState *ga_state;
@ -113,8 +121,11 @@ static const char *ga_freeze_whitelist[] = {
#ifdef _WIN32
DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data,
LPVOID ctx);
DWORD WINAPI handle_serial_device_events(DWORD type, LPVOID data);
VOID WINAPI service_main(DWORD argc, TCHAR *argv[]);
#endif
static int run_agent(GAState *s);
static void stop_agent(GAState *s, bool requested);
static void
init_dfl_pathnames(void)
@ -151,7 +162,7 @@ static void quit_handler(int sig)
WaitForSingleObject(hEventTimeout, 0);
CloseHandle(hEventTimeout);
}
qga_vss_fsfreeze(&i, false, &err);
qga_vss_fsfreeze(&i, false, NULL, &err);
if (err) {
g_debug("Error unfreezing filesystems prior to exiting: %s",
error_get_pretty(err));
@ -163,9 +174,7 @@ static void quit_handler(int sig)
}
g_debug("received signal num %d, quitting", sig);
if (g_main_loop_is_running(ga_state->main_loop)) {
g_main_loop_quit(ga_state->main_loop);
}
stop_agent(ga_state, true);
}
#ifndef _WIN32
@ -250,6 +259,10 @@ QEMU_COPYRIGHT "\n"
" to list available RPCs)\n"
" -D, --dump-conf dump a qemu-ga config file based on current config\n"
" options / command-line parameters to stdout\n"
" -r, --retry-path attempt re-opening path if it's unavailable or closed\n"
" due to an error which may be recoverable in the future\n"
" (virtio-serial driver re-install, serial device hot\n"
" plug/unplug, etc.)\n"
" -h, --help display this help and exit\n"
"\n"
QEMU_HELP_BOTTOM "\n"
@ -609,6 +622,7 @@ static gboolean channel_event_cb(GIOCondition condition, gpointer data)
switch (status) {
case G_IO_STATUS_ERROR:
g_warning("error reading channel");
stop_agent(s, false);
return false;
case G_IO_STATUS_NORMAL:
buf[count] = 0;
@ -666,6 +680,36 @@ static gboolean channel_init(GAState *s, const gchar *method, const gchar *path,
}
#ifdef _WIN32
DWORD WINAPI handle_serial_device_events(DWORD type, LPVOID data)
{
DWORD ret = NO_ERROR;
PDEV_BROADCAST_HDR broadcast_header = (PDEV_BROADCAST_HDR)data;
if (broadcast_header->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) {
switch (type) {
/* Device inserted */
case DBT_DEVICEARRIVAL:
/* Start QEMU-ga's service */
if (!SetEvent(ga_state->wakeup_event)) {
ret = GetLastError();
}
break;
/* Device removed */
case DBT_DEVICEQUERYREMOVE:
case DBT_DEVICEREMOVEPENDING:
case DBT_DEVICEREMOVECOMPLETE:
/* Stop QEMU-ga's service */
if (!ResetEvent(ga_state->wakeup_event)) {
ret = GetLastError();
}
break;
default:
ret = ERROR_CALL_NOT_IMPLEMENTED;
}
}
return ret;
}
DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data,
LPVOID ctx)
{
@ -677,9 +721,13 @@ DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data,
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
quit_handler(SIGTERM);
SetEvent(ga_state->wakeup_event);
service->status.dwCurrentState = SERVICE_STOP_PENDING;
SetServiceStatus(service->status_handle, &service->status);
break;
case SERVICE_CONTROL_DEVICEEVENT:
handle_serial_device_events(type, data);
break;
default:
ret = ERROR_CALL_NOT_IMPLEMENTED;
@ -706,10 +754,24 @@ VOID WINAPI service_main(DWORD argc, TCHAR *argv[])
service->status.dwServiceSpecificExitCode = NO_ERROR;
service->status.dwCheckPoint = 0;
service->status.dwWaitHint = 0;
DEV_BROADCAST_DEVICEINTERFACE notification_filter;
ZeroMemory(&notification_filter, sizeof(notification_filter));
notification_filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
notification_filter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);
notification_filter.dbcc_classguid = GUID_VIOSERIAL_PORT;
service->device_notification_handle =
RegisterDeviceNotification(service->status_handle,
&notification_filter, DEVICE_NOTIFY_SERVICE_HANDLE);
if (!service->device_notification_handle) {
g_critical("Failed to register device notification handle!\n");
return;
}
SetServiceStatus(service->status_handle, &service->status);
g_main_loop_run(ga_state->main_loop);
run_agent(ga_state);
UnregisterDeviceNotification(service->device_notification_handle);
service->status.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus(service->status_handle, &service->status);
}
@ -905,7 +967,7 @@ static GList *split_list(const gchar *str, const gchar *delim)
return list;
}
typedef struct GAConfig {
struct GAConfig {
char *channel_path;
char *method;
char *log_filepath;
@ -922,7 +984,8 @@ typedef struct GAConfig {
int daemonize;
GLogLevelFlags log_level;
int dumpconf;
} GAConfig;
bool retry_path;
};
static void config_load(GAConfig *config)
{
@ -971,6 +1034,10 @@ static void config_load(GAConfig *config)
/* enable all log levels */
config->log_level = G_LOG_LEVEL_MASK;
}
if (g_key_file_has_key(keyfile, "general", "retry-path", NULL)) {
config->retry_path =
g_key_file_get_boolean(keyfile, "general", "retry-path", &gerr);
}
if (g_key_file_has_key(keyfile, "general", "blacklist", NULL)) {
config->bliststr =
g_key_file_get_string(keyfile, "general", "blacklist", &gerr);
@ -1032,6 +1099,8 @@ static void config_dump(GAConfig *config)
g_key_file_set_string(keyfile, "general", "statedir", config->state_dir);
g_key_file_set_boolean(keyfile, "general", "verbose",
config->log_level == G_LOG_LEVEL_MASK);
g_key_file_set_boolean(keyfile, "general", "retry-path",
config->retry_path);
tmp = list_join(config->blacklist, ',');
g_key_file_set_string(keyfile, "general", "blacklist", tmp);
g_free(tmp);
@ -1050,7 +1119,7 @@ static void config_dump(GAConfig *config)
static void config_parse(GAConfig *config, int argc, char **argv)
{
const char *sopt = "hVvdm:p:l:f:F::b:s:t:D";
const char *sopt = "hVvdm:p:l:f:F::b:s:t:Dr";
int opt_ind = 0, ch;
const struct option lopt[] = {
{ "help", 0, NULL, 'h' },
@ -1070,6 +1139,7 @@ static void config_parse(GAConfig *config, int argc, char **argv)
{ "service", 1, NULL, 's' },
#endif
{ "statedir", 1, NULL, 't' },
{ "retry-path", 0, NULL, 'r' },
{ NULL, 0, NULL, 0 }
};
@ -1114,6 +1184,9 @@ static void config_parse(GAConfig *config, int argc, char **argv)
case 'D':
config->dumpconf = 1;
break;
case 'r':
config->retry_path = true;
break;
case 'b': {
if (is_help_option(optarg)) {
qmp_for_each_command(&ga_commands, ga_print_cmd, NULL);
@ -1211,9 +1284,21 @@ static bool check_is_frozen(GAState *s)
return false;
}
static int run_agent(GAState *s, GAConfig *config, int socket_activation)
static GAState *initialize_agent(GAConfig *config, int socket_activation)
{
ga_state = s;
GAState *s = g_new0(GAState, 1);
g_assert(ga_state == NULL);
s->log_level = config->log_level;
s->log_file = stderr;
#ifdef CONFIG_FSFREEZE
s->fsfreeze_hook = config->fsfreeze_hook;
#endif
s->pstate_filepath = g_strdup_printf("%s/qga.state", config->state_dir);
s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen",
config->state_dir);
s->frozen = check_is_frozen(s);
g_log_set_default_handler(ga_log, s);
g_log_set_fatal_mask(NULL, G_LOG_LEVEL_ERROR);
@ -1229,7 +1314,7 @@ static int run_agent(GAState *s, GAConfig *config, int socket_activation)
if (g_mkdir_with_parents(config->state_dir, S_IRWXU) == -1) {
g_critical("unable to create (an ancestor of) the state directory"
" '%s': %s", config->state_dir, strerror(errno));
return EXIT_FAILURE;
return NULL;
}
#endif
@ -1254,7 +1339,7 @@ static int run_agent(GAState *s, GAConfig *config, int socket_activation)
if (!log_file) {
g_critical("unable to open specified log file: %s",
strerror(errno));
return EXIT_FAILURE;
return NULL;
}
s->log_file = log_file;
}
@ -1265,7 +1350,7 @@ static int run_agent(GAState *s, GAConfig *config, int socket_activation)
s->pstate_filepath,
ga_is_frozen(s))) {
g_critical("failed to load persistent state");
return EXIT_FAILURE;
return NULL;
}
config->blacklist = ga_command_blacklist_init(config->blacklist);
@ -1286,36 +1371,116 @@ static int run_agent(GAState *s, GAConfig *config, int socket_activation)
#ifndef _WIN32
if (!register_signal_handlers()) {
g_critical("failed to register signal handlers");
return EXIT_FAILURE;
return NULL;
}
#endif
s->main_loop = g_main_loop_new(NULL, false);
if (!channel_init(ga_state, config->method, config->channel_path,
socket_activation ? FIRST_SOCKET_ACTIVATION_FD : -1)) {
g_critical("failed to initialize guest agent channel");
return EXIT_FAILURE;
}
#ifndef _WIN32
g_main_loop_run(ga_state->main_loop);
#else
if (config->daemonize) {
SERVICE_TABLE_ENTRY service_table[] = {
{ (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } };
StartServiceCtrlDispatcher(service_table);
} else {
g_main_loop_run(ga_state->main_loop);
s->config = config;
s->socket_activation = socket_activation;
#ifdef _WIN32
s->wakeup_event = CreateEvent(NULL, TRUE, FALSE, TEXT("WakeUp"));
if (s->wakeup_event == NULL) {
g_critical("CreateEvent failed");
return NULL;
}
#endif
ga_state = s;
return s;
}
static void cleanup_agent(GAState *s)
{
#ifdef _WIN32
CloseHandle(s->wakeup_event);
#endif
if (s->command_state) {
ga_command_state_cleanup_all(s->command_state);
ga_command_state_free(s->command_state);
json_message_parser_destroy(&s->parser);
}
g_free(s->pstate_filepath);
g_free(s->state_filepath_isfrozen);
if (s->main_loop) {
g_main_loop_unref(s->main_loop);
}
g_free(s);
ga_state = NULL;
}
static int run_agent_once(GAState *s)
{
if (!channel_init(s, s->config->method, s->config->channel_path,
s->socket_activation ? FIRST_SOCKET_ACTIVATION_FD : -1)) {
g_critical("failed to initialize guest agent channel");
return EXIT_FAILURE;
}
g_main_loop_run(ga_state->main_loop);
if (s->channel) {
ga_channel_free(s->channel);
}
return EXIT_SUCCESS;
}
static void wait_for_channel_availability(GAState *s)
{
g_warning("waiting for channel path...");
#ifndef _WIN32
sleep(QGA_RETRY_INTERVAL);
#else
DWORD dwWaitResult;
dwWaitResult = WaitForSingleObject(s->wakeup_event, INFINITE);
switch (dwWaitResult) {
case WAIT_OBJECT_0:
break;
case WAIT_TIMEOUT:
break;
default:
g_critical("WaitForSingleObject failed");
}
#endif
}
static int run_agent(GAState *s)
{
int ret = EXIT_SUCCESS;
s->force_exit = false;
do {
ret = run_agent_once(s);
if (s->config->retry_path && !s->force_exit) {
g_warning("agent stopped unexpectedly, restarting...");
wait_for_channel_availability(s);
}
} while (s->config->retry_path && !s->force_exit);
return ret;
}
static void stop_agent(GAState *s, bool requested)
{
if (!s->force_exit) {
s->force_exit = requested;
}
if (g_main_loop_is_running(s->main_loop)) {
g_main_loop_quit(s->main_loop);
}
}
int main(int argc, char **argv)
{
int ret = EXIT_SUCCESS;
GAState *s = g_new0(GAState, 1);
GAState *s;
GAConfig *config = g_new0(GAConfig, 1);
int socket_activation;
@ -1383,44 +1548,37 @@ int main(int argc, char **argv)
}
}
s->log_level = config->log_level;
s->log_file = stderr;
#ifdef CONFIG_FSFREEZE
s->fsfreeze_hook = config->fsfreeze_hook;
#endif
s->pstate_filepath = g_strdup_printf("%s/qga.state", config->state_dir);
s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen",
config->state_dir);
s->frozen = check_is_frozen(s);
if (config->dumpconf) {
config_dump(config);
goto end;
}
ret = run_agent(s, config, socket_activation);
s = initialize_agent(config, socket_activation);
if (!s) {
g_critical("error initializing guest agent");
goto end;
}
#ifdef _WIN32
if (config->daemonize) {
SERVICE_TABLE_ENTRY service_table[] = {
{ (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } };
StartServiceCtrlDispatcher(service_table);
} else {
ret = run_agent(s);
}
#else
ret = run_agent(s);
#endif
cleanup_agent(s);
end:
if (s->command_state) {
ga_command_state_cleanup_all(s->command_state);
ga_command_state_free(s->command_state);
json_message_parser_destroy(&s->parser);
}
if (s->channel) {
ga_channel_free(s->channel);
}
g_free(s->pstate_filepath);
g_free(s->state_filepath_isfrozen);
if (config->daemonize) {
unlink(config->pid_filepath);
}
config_free(config);
if (s->main_loop) {
g_main_loop_unref(s->main_loop);
}
g_free(s);
return ret;
}

5
qga/qapi-schema.json
View File

@ -834,13 +834,16 @@
# @bus: bus id
# @target: target id
# @unit: unit id
# @serial: serial number (since: 3.1)
# @dev: device node (POSIX) or device UNC (Windows) (since: 3.1)
#
# Since: 2.2
##
{ 'struct': 'GuestDiskAddress',
'data': {'pci-controller': 'GuestPCIAddress',
'bus-type': 'GuestDiskBusType',
'bus': 'int', 'target': 'int', 'unit': 'int'} }
'bus': 'int', 'target': 'int', 'unit': 'int',
'*serial': 'str', '*dev': 'str'} }
##
# @GuestFilesystemInfo:

4
qga/service-win32.h
View File

@ -20,9 +20,13 @@
#define QGA_SERVICE_NAME "qemu-ga"
#define QGA_SERVICE_DESCRIPTION "Enables integration with QEMU machine emulator and virtualizer."
static const GUID GUID_VIOSERIAL_PORT = { 0x6fde7521, 0x1b65, 0x48ae,
{ 0xb6, 0x28, 0x80, 0xbe, 0x62, 0x1, 0x60, 0x26 } };
typedef struct GAService {
SERVICE_STATUS status;
SERVICE_STATUS_HANDLE status_handle;
HDEVNOTIFY device_notification_handle;
} GAService;
int ga_install_service(const char *path, const char *logfile,

5
qga/vss-win32.c
View File

@ -147,7 +147,8 @@ void ga_uninstall_vss_provider(void)
}
/* Call VSS requester and freeze/thaw filesystems and applications */
void qga_vss_fsfreeze(int *nr_volume, bool freeze, Error **errp)
void qga_vss_fsfreeze(int *nr_volume, bool freeze,
strList *mountpoints, Error **errp)
{
const char *func_name = freeze ? "requester_freeze" : "requester_thaw";
QGAVSSRequesterFunc func;
@ -164,5 +165,5 @@ void qga_vss_fsfreeze(int *nr_volume, bool freeze, Error **errp)
return;
}
func(nr_volume, &errset);
func(nr_volume, mountpoints, &errset);
}

3
qga/vss-win32.h
View File

@ -22,6 +22,7 @@ bool vss_initialized(void);
int ga_install_vss_provider(void);
void ga_uninstall_vss_provider(void);
void qga_vss_fsfreeze(int *nr_volume, bool freeze, Error **errp);
void qga_vss_fsfreeze(int *nr_volume, bool freeze,
strList *mountpints, Error **errp);
#endif

92
qga/vss-win32/requester.cpp
View File

@ -234,7 +234,7 @@ out:
}
}
void requester_freeze(int *num_vols, ErrorSet *errset)
void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset)
{
COMPointer<IVssAsync> pAsync;
HANDLE volume;
@ -246,6 +246,7 @@ void requester_freeze(int *num_vols, ErrorSet *errset)
WCHAR short_volume_name[64], *display_name = short_volume_name;
DWORD wait_status;
int num_fixed_drives = 0, i;
int num_mount_points = 0;
if (vss_ctx.pVssbc) { /* already frozen */
*num_vols = 0;
@ -337,39 +338,73 @@ void requester_freeze(int *num_vols, ErrorSet *errset)
goto out;
}
volume = FindFirstVolumeW(short_volume_name, sizeof(short_volume_name));
if (volume == INVALID_HANDLE_VALUE) {
err_set(errset, hr, "failed to find first volume");
goto out;
}
for (;;) {
if (GetDriveTypeW(short_volume_name) == DRIVE_FIXED) {
if (mountpoints) {
PWCHAR volume_name_wchar;
for (volList *list = (volList *)mountpoints; list; list = list->next) {
size_t len = strlen(list->value) + 1;
size_t converted = 0;
VSS_ID pid;
hr = vss_ctx.pVssbc->AddToSnapshotSet(short_volume_name,
volume_name_wchar = new wchar_t[len];
mbstowcs_s(&converted, volume_name_wchar, len,
list->value, _TRUNCATE);
hr = vss_ctx.pVssbc->AddToSnapshotSet(volume_name_wchar,
g_gProviderId, &pid);
if (FAILED(hr)) {
WCHAR volume_path_name[PATH_MAX];
if (GetVolumePathNamesForVolumeNameW(
short_volume_name, volume_path_name,
sizeof(volume_path_name), NULL) && *volume_path_name) {
display_name = volume_path_name;
}
err_set(errset, hr, "failed to add %S to snapshot set",
display_name);
FindVolumeClose(volume);
volume_name_wchar);
delete volume_name_wchar;
goto out;
}
num_fixed_drives++;
num_mount_points++;
delete volume_name_wchar;
}
if (!FindNextVolumeW(volume, short_volume_name,
sizeof(short_volume_name))) {
FindVolumeClose(volume);
break;
if (num_mount_points == 0) {
/* If there is no valid mount points, just exit. */
goto out;
}
}
if (num_fixed_drives == 0) {
goto out; /* If there is no fixed drive, just exit. */
if (!mountpoints) {
volume = FindFirstVolumeW(short_volume_name, sizeof(short_volume_name));
if (volume == INVALID_HANDLE_VALUE) {
err_set(errset, hr, "failed to find first volume");
goto out;
}
for (;;) {
if (GetDriveTypeW(short_volume_name) == DRIVE_FIXED) {
VSS_ID pid;
hr = vss_ctx.pVssbc->AddToSnapshotSet(short_volume_name,
g_gProviderId, &pid);
if (FAILED(hr)) {
WCHAR volume_path_name[PATH_MAX];
if (GetVolumePathNamesForVolumeNameW(
short_volume_name, volume_path_name,
sizeof(volume_path_name), NULL) &&
*volume_path_name) {
display_name = volume_path_name;
}
err_set(errset, hr, "failed to add %S to snapshot set",
display_name);
FindVolumeClose(volume);
goto out;
}
num_fixed_drives++;
}
if (!FindNextVolumeW(volume, short_volume_name,
sizeof(short_volume_name))) {
FindVolumeClose(volume);
break;
}
}
if (num_fixed_drives == 0) {
goto out; /* If there is no fixed drive, just exit. */
}
}
hr = vss_ctx.pVssbc->PrepareForBackup(pAsync.replace());
@ -435,7 +470,12 @@ void requester_freeze(int *num_vols, ErrorSet *errset)
goto out;
}
*num_vols = vss_ctx.cFrozenVols = num_fixed_drives;
if (mountpoints) {
*num_vols = vss_ctx.cFrozenVols = num_mount_points;
} else {
*num_vols = vss_ctx.cFrozenVols = num_fixed_drives;
}
return;
out:
@ -449,7 +489,7 @@ out1:
}
void requester_thaw(int *num_vols, ErrorSet *errset)
void requester_thaw(int *num_vols, void *mountpints, ErrorSet *errset)
{
COMPointer<IVssAsync> pAsync;

13
qga/vss-win32/requester.h
View File

@ -34,9 +34,16 @@ typedef struct ErrorSet {
STDAPI requester_init(void);
STDAPI requester_deinit(void);
typedef void (*QGAVSSRequesterFunc)(int *, ErrorSet *);
void requester_freeze(int *num_vols, ErrorSet *errset);
void requester_thaw(int *num_vols, ErrorSet *errset);
typedef struct volList volList;
struct volList {
volList *next;
char *value;
};
typedef void (*QGAVSSRequesterFunc)(int *, void *, ErrorSet *);
void requester_freeze(int *num_vols, void *volList, ErrorSet *errset);
void requester_thaw(int *num_vols, void *volList, ErrorSet *errset);
#ifdef __cplusplus
}