qemu-ga patch queue for 2.11

* support for network interface stats
 * w32: improvements for guest-set-time
 * w32: fix a hang with guest-fsfreeze-freeze when timeout occurs
   during heavy I/O
 * w32: fix faulty error-handling in VSS/fsfreeze COM registration
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Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2017-10-26-tag' into staging

qemu-ga patch queue for 2.11

* support for network interface stats
* w32: improvements for guest-set-time
* w32: fix a hang with guest-fsfreeze-freeze when timeout occurs
  during heavy I/O
* w32: fix faulty error-handling in VSS/fsfreeze COM registration

# gpg: Signature made Fri 27 Oct 2017 02:11:53 BST
# gpg:                using RSA key 0x3353C9CEF108B584
# 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-2017-10-26-tag:
  qga-win: fix error-handling in getNameByStringSID()
  qga: add network stats to guest-network-get-interfaces
  qga-win: Updating guest_set_time action
  qga-win: don't hang if vss hold writes timeout

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

configure

@@ -828,7 +828,7 @@ if test "$mingw32" = "yes" ; then
   sysconfdir="\${prefix}"
   local_statedir=
   confsuffix=""
-  libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -liphlpapi -lnetapi32 $libs_qga"
+  libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -lwininet -liphlpapi -lnetapi32 $libs_qga"
 fi
 
 werror=""

qga/commands-posix.c

@@ -1643,6 +1643,67 @@ guest_find_interface(GuestNetworkInterfaceList *head,
     return head;
 }
 
+static int guest_get_network_stats(const char *name,
+                       GuestNetworkInterfaceStat *stats)
+{
+    int name_len;
+    char const *devinfo = "/proc/net/dev";
+    FILE *fp;
+    char *line = NULL, *colon;
+    size_t n = 0;
+    fp = fopen(devinfo, "r");
+    if (!fp) {
+        return -1;
+    }
+    name_len = strlen(name);
+    while (getline(&line, &n, fp) != -1) {
+        long long dummy;
+        long long rx_bytes;
+        long long rx_packets;
+        long long rx_errs;
+        long long rx_dropped;
+        long long tx_bytes;
+        long long tx_packets;
+        long long tx_errs;
+        long long tx_dropped;
+        char *trim_line;
+        trim_line = g_strchug(line);
+        if (trim_line[0] == '\0') {
+            continue;
+        }
+        colon = strchr(trim_line, ':');
+        if (!colon) {
+            continue;
+        }
+        if (colon - name_len  == trim_line &&
+           strncmp(trim_line, name, name_len) == 0) {
+            if (sscanf(colon + 1,
+                "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld",
+                  &rx_bytes, &rx_packets, &rx_errs, &rx_dropped,
+                  &dummy, &dummy, &dummy, &dummy,
+                  &tx_bytes, &tx_packets, &tx_errs, &tx_dropped,
+                  &dummy, &dummy, &dummy, &dummy) != 16) {
+                continue;
+            }
+            stats->rx_bytes = rx_bytes;
+            stats->rx_packets = rx_packets;
+            stats->rx_errs = rx_errs;
+            stats->rx_dropped = rx_dropped;
+            stats->tx_bytes = tx_bytes;
+            stats->tx_packets = tx_packets;
+            stats->tx_errs = tx_errs;
+            stats->tx_dropped = tx_dropped;
+            fclose(fp);
+            g_free(line);
+            return 0;
+        }
+    }
+    fclose(fp);
+    g_free(line);
+    g_debug("/proc/net/dev: Interface '%s' not found", name);
+    return -1;
+}
+
 /*
  * Build information about guest interfaces
  */
@@ -1659,6 +1720,7 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
     for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
         GuestNetworkInterfaceList *info;
         GuestIpAddressList **address_list = NULL, *address_item = NULL;
+        GuestNetworkInterfaceStat  *interface_stat = NULL;
         char addr4[INET_ADDRSTRLEN];
         char addr6[INET6_ADDRSTRLEN];
         int sock;
@@ -1778,7 +1840,17 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
 
         info->value->has_ip_addresses = true;
 
-
+        if (!info->value->has_statistics) {
+            interface_stat = g_malloc0(sizeof(*interface_stat));
+            if (guest_get_network_stats(info->value->name,
+                interface_stat) == -1) {
+                info->value->has_statistics = false;
+                g_free(interface_stat);
+            } else {
+                info->value->statistics = interface_stat;
+                info->value->has_statistics = true;
+            }
+        }
     }
 
     freeifaddrs(ifap);

qga/commands-win32.c

@@ -29,6 +29,7 @@
 #endif
 #include <lm.h>
 #include <wtsapi32.h>
+#include <wininet.h>
 
 #include "qga/guest-agent-core.h"
 #include "qga/vss-win32.h"
@@ -1152,6 +1153,44 @@ out:
 }
 #endif
 
+#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;
+    }
+}
+static int guest_get_network_stats(const char *name,
+                       GuestNetworkInterfaceStat *stats)
+{
+    DWORD if_index = 0;
+    MIB_IFROW a_mid_ifrow;
+    memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
+    if_index = get_interface_index(name);
+    a_mid_ifrow.dwIndex = if_index;
+    if (NO_ERROR == GetIfEntry(&a_mid_ifrow)) {
+        stats->rx_bytes = a_mid_ifrow.dwInOctets;
+        stats->rx_packets = a_mid_ifrow.dwInUcastPkts;
+        stats->rx_errs = a_mid_ifrow.dwInErrors;
+        stats->rx_dropped = a_mid_ifrow.dwInDiscards;
+        stats->tx_bytes = a_mid_ifrow.dwOutOctets;
+        stats->tx_packets = a_mid_ifrow.dwOutUcastPkts;
+        stats->tx_errs = a_mid_ifrow.dwOutErrors;
+        stats->tx_dropped = a_mid_ifrow.dwOutDiscards;
+        return 0;
+    }
+    return -1;
+}
+
 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
 {
     IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
@@ -1159,6 +1198,7 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
     GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
     GuestIpAddressList *head_addr, *cur_addr;
     GuestNetworkInterfaceList *info;
+    GuestNetworkInterfaceStat *interface_stat = NULL;
     GuestIpAddressList *address_item = NULL;
     unsigned char *mac_addr;
     char *addr_str;
@@ -1238,6 +1278,17 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
             info->value->has_ip_addresses = true;
             info->value->ip_addresses = head_addr;
         }
+        if (!info->value->has_statistics) {
+            interface_stat = g_malloc0(sizeof(*interface_stat));
+            if (guest_get_network_stats(addr->AdapterName,
+                interface_stat) == -1) {
+                info->value->has_statistics = false;
+                g_free(interface_stat);
+            } else {
+                info->value->statistics = interface_stat;
+                info->value->has_statistics = true;
+            }
+        }
     }
     WSACleanup();
 out:
@@ -1277,8 +1328,41 @@ void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
          * 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.
          */
-        error_setg(errp, "Time argument is required on this platform");
+        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;
     }
 

qga/qapi-schema.json

@@ -642,6 +642,38 @@
            'ip-address-type': 'GuestIpAddressType',
            'prefix': 'int'} }
 
+##
+# @GuestNetworkInterfaceStat:
+#
+# @rx-bytes: total bytes received
+#
+# @rx-packets: total packets received
+#
+# @rx-errs: bad packets received
+#
+# @rx-dropped: receiver dropped packets
+#
+# @tx-bytes: total bytes transmitted
+#
+# @tx-packets: total packets transmitted
+#
+# @tx-errs: packet transmit problems
+#
+# @tx-dropped: dropped packets transmitted
+#
+# Since: 2.11
+##
+{ 'struct': 'GuestNetworkInterfaceStat',
+  'data': {'rx-bytes': 'uint64',
+            'rx-packets': 'uint64',
+            'rx-errs': 'uint64',
+            'rx-dropped': 'uint64',
+            'tx-bytes': 'uint64',
+            'tx-packets': 'uint64',
+            'tx-errs': 'uint64',
+            'tx-dropped': 'uint64'
+           } }
+
 ##
 # @GuestNetworkInterface:
 #
@@ -651,12 +683,16 @@
 #
 # @ip-addresses: List of addresses assigned to @name
 #
+# @statistics: various statistic counters related to @name
+# (since 2.11)
+#
 # Since: 1.1
 ##
 { 'struct': 'GuestNetworkInterface',
   'data': {'name': 'str',
            '*hardware-address': 'str',
-           '*ip-addresses': ['GuestIpAddress'] } }
+           '*ip-addresses': ['GuestIpAddress'],
+           '*statistics': 'GuestNetworkInterfaceStat' } }
 
 ##
 # @guest-network-get-interfaces:

qga/vss-win32/install.cpp

@@ -148,10 +148,15 @@ static HRESULT getNameByStringSID(
     DWORD domainNameLen = BUFFER_SIZE;
     wchar_t domainName[BUFFER_SIZE];
 
-    chk(ConvertStringSidToSidW(sid, &psid));
-    LookupAccountSidW(NULL, psid, buffer, bufferLen,
-                domainName, &domainNameLen, &groupType);
-    hr = HRESULT_FROM_WIN32(GetLastError());
+    if (!ConvertStringSidToSidW(sid, &psid)) {
+        hr = HRESULT_FROM_WIN32(GetLastError());
+        goto out;
+    }
+    if (!LookupAccountSidW(NULL, psid, buffer, bufferLen,
+                           domainName, &domainNameLen, &groupType)) {
+        hr = HRESULT_FROM_WIN32(GetLastError());
+        /* Fall through and free psid */
+    }
 
     LocalFree(psid);
 

qga/vss-win32/requester.cpp

@@ -419,6 +419,16 @@ void requester_freeze(int *num_vols, ErrorSet *errset)
             break;
         }
     }
+
+    if (wait_status == WAIT_TIMEOUT) {
+        err_set(errset, E_FAIL,
+                "timeout when try to receive Frozen event from VSS provider");
+        /* If we are here, VSS had timeout.
+         * Don't call AbortBackup, just return directly.
+         */
+        goto out1;
+    }
+
     if (wait_status != WAIT_OBJECT_0) {
         err_set(errset, E_FAIL,
                 "couldn't receive Frozen event from VSS provider");
@@ -432,6 +442,8 @@ out:
     if (vss_ctx.pVssbc) {
         vss_ctx.pVssbc->AbortBackup();
     }
+
+out1:
     requester_cleanup();
     CoUninitialize();
 }