From patchwork Mon Jul 10 09:14:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konstantin Kostiuk X-Patchwork-Id: 1805607 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Et8P8DWi; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Qzyz35sThz20Ph for ; Mon, 10 Jul 2023 19:15:43 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qImzS-0000jr-H7; 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Mon, 10 Jul 2023 05:14:49 -0400 X-MC-Unique: DHDzV0KLMGWuAiQ53Ymi0A-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B9D49185A791; Mon, 10 Jul 2023 09:14:48 +0000 (UTC) Received: from kostyanf14nb.redhat.com (unknown [10.45.225.233]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A40F9200A7CA; Mon, 10 Jul 2023 09:14:47 +0000 (UTC) From: Konstantin Kostiuk To: qemu-devel@nongnu.org Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Michael Roth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Thomas Huth Subject: [PATCH v5 1/4] QGA VSS: Add wrapper to send log to debugger and stderr Date: Mon, 10 Jul 2023 12:14:36 +0300 Message-Id: <20230710091439.1010553-2-kkostiuk@redhat.com> In-Reply-To: <20230710091439.1010553-1-kkostiuk@redhat.com> References: <20230710091439.1010553-1-kkostiuk@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=kkostiuk@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Konstantin Kostiuk Reviewed-by: Thomas Huth --- qga/vss-win32/meson.build | 2 +- qga/vss-win32/vss-debug.cpp | 39 +++++++++++++++++++++++++++++++++++++ qga/vss-win32/vss-debug.h | 25 ++++++++++++++++++++++++ 3 files changed, 65 insertions(+), 1 deletion(-) create mode 100644 qga/vss-win32/vss-debug.cpp create mode 100644 qga/vss-win32/vss-debug.h diff --git a/qga/vss-win32/meson.build b/qga/vss-win32/meson.build index 9483ccd3b8..0ac918910b 100644 --- a/qga/vss-win32/meson.build +++ b/qga/vss-win32/meson.build @@ -7,7 +7,7 @@ link_args = cc.get_supported_link_arguments([ qga_vss = shared_module( 'qga-vss', - ['requester.cpp', 'provider.cpp', 'install.cpp', genh], + ['requester.cpp', 'provider.cpp', 'install.cpp', 'vss-debug.cpp', genh], name_prefix: '', cpp_args: ['-Wno-unknown-pragmas', '-Wno-delete-non-virtual-dtor', '-Wno-non-virtual-dtor'], link_args: link_args, diff --git a/qga/vss-win32/vss-debug.cpp b/qga/vss-win32/vss-debug.cpp new file mode 100644 index 0000000000..820b1c6667 --- /dev/null +++ b/qga/vss-win32/vss-debug.cpp @@ -0,0 +1,39 @@ +/* + * QEMU Guest Agent VSS debug declarations + * + * Copyright (C) 2023 Red Hat Inc + * + * Authors: + * Konstantin Kostiuk + * + * 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 "vss-debug.h" +#include "vss-common.h" + +void qga_debug_internal(const char *funcname, const char *fmt, ...) +{ + char user_string[512] = {0}; + char full_string[640] = {0}; + + va_list args; + va_start(args, fmt); + if (vsnprintf(user_string, _countof(user_string), fmt, args) <= 0) { + va_end(args); + return; + } + + va_end(args); + + if (snprintf(full_string, _countof(full_string), + QGA_PROVIDER_NAME "[%lu]: %s %s\n", + GetCurrentThreadId(), funcname, user_string) <= 0) { + return; + } + + OutputDebugString(full_string); + fputs(full_string, stderr); +} diff --git a/qga/vss-win32/vss-debug.h b/qga/vss-win32/vss-debug.h new file mode 100644 index 0000000000..7800457392 --- /dev/null +++ b/qga/vss-win32/vss-debug.h @@ -0,0 +1,25 @@ +/* + * QEMU Guest Agent VSS debug declarations + * + * Copyright (C) 2023 Red Hat Inc + * + * Authors: + * Konstantin Kostiuk + * + * 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 + +#ifndef VSS_DEBUG_H +#define VSS_DEBUG_H + +void qga_debug_internal(const char *funcname, const char *fmt, ...) G_GNUC_PRINTF(2, 3); + +#define qga_debug(fmt, ...) qga_debug_internal(__func__, fmt, ## __VA_ARGS__) +#define qga_debug_begin qga_debug("begin") +#define qga_debug_end qga_debug("end") + +#endif From patchwork Mon Jul 10 09:14:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Konstantin Kostiuk X-Patchwork-Id: 1805605 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=afY5BDJi; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Qzyyk2dTxz20Ph for ; 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envelope-from=kkostiuk@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Konstantin Kostiuk Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Thomas Huth --- qga/vss-win32/install.cpp | 12 ++++++------ qga/vss-win32/requester.cpp | 9 +++++---- 2 files changed, 11 insertions(+), 10 deletions(-) diff --git a/qga/vss-win32/install.cpp b/qga/vss-win32/install.cpp index ff93b08a9e..e03473d1a8 100644 --- a/qga/vss-win32/install.cpp +++ b/qga/vss-win32/install.cpp @@ -13,6 +13,7 @@ #include "qemu/osdep.h" #include "vss-common.h" +#include "vss-debug.h" #ifdef HAVE_VSS_SDK #include #else @@ -54,7 +55,7 @@ void errmsg(DWORD err, const char *text) FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (char *)&msg, 0, NULL); - fprintf(stderr, "%.*s. (Error: %lx) %s\n", len, text, err, msg); + qga_debug("%.*s. (Error: %lx) %s", len, text, err, msg); LocalFree(msg); } @@ -219,7 +220,7 @@ static HRESULT QGAProviderRemove(ICatalogCollection *coll, int i, void *arg) { HRESULT hr; - fprintf(stderr, "Removing COM+ Application: %s\n", QGA_PROVIDER_NAME); + qga_debug("Removing COM+ Application: %s", QGA_PROVIDER_NAME); chk(coll->Remove(i)); out: return hr; @@ -304,9 +305,8 @@ STDAPI COMRegister(void) } strcpy(tlbPath, dllPath); strcpy(tlbPath+n-3, "tlb"); - fprintf(stderr, "Registering " QGA_PROVIDER_NAME ":\n"); - fprintf(stderr, " %s\n", dllPath); - fprintf(stderr, " %s\n", tlbPath); + qga_debug("Registering " QGA_PROVIDER_NAME ": %s %s", + dllPath, tlbPath); if (!PathFileExists(tlbPath)) { hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND); errmsg(hr, "Failed to lookup tlb"); @@ -517,7 +517,7 @@ namespace _com_util } if (mbstowcs(bstr, ascii, len) == (size_t)-1) { - fprintf(stderr, "Failed to convert string '%s' into BSTR", ascii); + qga_debug("Failed to convert string '%s' into BSTR", ascii); bstr[0] = 0; } return bstr; diff --git a/qga/vss-win32/requester.cpp b/qga/vss-win32/requester.cpp index 3e998af4a8..e85b9bc633 100644 --- a/qga/vss-win32/requester.cpp +++ b/qga/vss-win32/requester.cpp @@ -12,6 +12,7 @@ #include "qemu/osdep.h" #include "vss-common.h" +#include "vss-debug.h" #include "requester.h" #include "install.h" #include @@ -59,13 +60,13 @@ STDAPI requester_init(void) NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_PKT_PRIVACY, RPC_C_IMP_LEVEL_IDENTIFY, NULL, EOAC_NONE, NULL); if (FAILED(hr)) { - fprintf(stderr, "failed to CoInitializeSecurity (error %lx)\n", hr); + qga_debug("failed to CoInitializeSecurity (error %lx)", hr); return hr; } hLib = LoadLibraryA("VSSAPI.DLL"); if (!hLib) { - fprintf(stderr, "failed to load VSSAPI.DLL\n"); + qga_debug("failed to load VSSAPI.DLL"); return HRESULT_FROM_WIN32(GetLastError()); } @@ -78,14 +79,14 @@ STDAPI requester_init(void) #endif ); if (!pCreateVssBackupComponents) { - fprintf(stderr, "failed to get proc address from VSSAPI.DLL\n"); + qga_debug("failed to get proc address from VSSAPI.DLL"); return HRESULT_FROM_WIN32(GetLastError()); } pVssFreeSnapshotProperties = (t_VssFreeSnapshotProperties) GetProcAddress(hLib, "VssFreeSnapshotProperties"); if (!pVssFreeSnapshotProperties) { - fprintf(stderr, "failed to get proc address from VSSAPI.DLL\n"); + qga_debug("failed to get proc address from VSSAPI.DLL"); return HRESULT_FROM_WIN32(GetLastError()); } From patchwork Mon Jul 10 09:14:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Konstantin Kostiuk X-Patchwork-Id: 1805606 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=IEUvAGoc; 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envelope-from=kkostiuk@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add several qga_debug() statements in functions. Signed-off-by: Konstantin Kostiuk Reviewed-by: Thomas Huth --- qga/vss-win32/install.cpp | 35 +++++++++++++++++++++++++++++++++++ qga/vss-win32/provider.cpp | 3 +++ qga/vss-win32/requester.cpp | 34 ++++++++++++++++++++++++++++++++++ 3 files changed, 72 insertions(+) diff --git a/qga/vss-win32/install.cpp b/qga/vss-win32/install.cpp index e03473d1a8..ae38662a62 100644 --- a/qga/vss-win32/install.cpp +++ b/qga/vss-win32/install.cpp @@ -100,6 +100,8 @@ HRESULT put_Value(ICatalogObject *pObj, LPCWSTR name, T val) /* Lookup Administrators group name from winmgmt */ static HRESULT GetAdminName(_bstr_t *name) { + qga_debug_begin; + HRESULT hr; COMPointer pLoc; COMPointer pSvc; @@ -142,6 +144,7 @@ static HRESULT GetAdminName(_bstr_t *name) } out: + qga_debug_end; return hr; } @@ -149,6 +152,8 @@ out: static HRESULT getNameByStringSID( const wchar_t *sid, LPWSTR buffer, LPDWORD bufferLen) { + qga_debug_begin; + HRESULT hr = S_OK; PSID psid = NULL; SID_NAME_USE groupType; @@ -168,6 +173,7 @@ static HRESULT getNameByStringSID( LocalFree(psid); out: + qga_debug_end; return hr; } @@ -175,6 +181,8 @@ out: static HRESULT QGAProviderFind( HRESULT (*found)(ICatalogCollection *, int, void *), void *arg) { + qga_debug_begin; + HRESULT hr; COMInitializer initializer; COMPointer pUnknown; @@ -205,41 +213,53 @@ static HRESULT QGAProviderFind( chk(pColl->SaveChanges(&n)); out: + qga_debug_end; return hr; } /* Count QGA VSS provider in COM+ Application Catalog */ static HRESULT QGAProviderCount(ICatalogCollection *coll, int i, void *arg) { + qga_debug_begin; + (*(int *)arg)++; + + qga_debug_end; return S_OK; } /* Remove QGA VSS provider from COM+ Application Catalog Collection */ static HRESULT QGAProviderRemove(ICatalogCollection *coll, int i, void *arg) { + qga_debug_begin; HRESULT hr; qga_debug("Removing COM+ Application: %s", QGA_PROVIDER_NAME); chk(coll->Remove(i)); out: + qga_debug_end; return hr; } /* Unregister this module from COM+ Applications Catalog */ STDAPI COMUnregister(void) { + qga_debug_begin; + HRESULT hr; DllUnregisterServer(); chk(QGAProviderFind(QGAProviderRemove, NULL)); out: + qga_debug_end; return hr; } /* Register this module to COM+ Applications Catalog */ STDAPI COMRegister(void) { + qga_debug_begin; + HRESULT hr; COMInitializer initializer; COMPointer pUnknown; @@ -259,12 +279,14 @@ STDAPI COMRegister(void) if (!g_hinstDll) { errmsg(E_FAIL, "Failed to initialize DLL"); + qga_debug_end; return E_FAIL; } chk(QGAProviderFind(QGAProviderCount, (void *)&count)); if (count) { errmsg(E_ABORT, "QGA VSS Provider is already installed"); + qga_debug_end; return E_ABORT; } @@ -354,6 +376,7 @@ out: COMUnregister(); } + qga_debug_end; return hr; } @@ -369,6 +392,8 @@ STDAPI_(void) CALLBACK DLLCOMUnregister(HWND, HINSTANCE, LPSTR, int) static BOOL CreateRegistryKey(LPCTSTR key, LPCTSTR value, LPCTSTR data) { + qga_debug_begin; + HKEY hKey; LONG ret; DWORD size; @@ -389,6 +414,7 @@ static BOOL CreateRegistryKey(LPCTSTR key, LPCTSTR value, LPCTSTR data) RegCloseKey(hKey); out: + qga_debug_end; if (ret != ERROR_SUCCESS) { /* As we cannot printf within DllRegisterServer(), show a dialog. */ errmsg_dialog(ret, "Cannot add registry", key); @@ -400,6 +426,8 @@ out: /* Register this dll as a VSS provider */ STDAPI DllRegisterServer(void) { + qga_debug_begin; + COMInitializer initializer; COMPointer pVssAdmin; HRESULT hr = E_FAIL; @@ -478,12 +506,15 @@ out: DllUnregisterServer(); } + qga_debug_end; return hr; } /* Unregister this VSS hardware provider from the system */ STDAPI DllUnregisterServer(void) { + qga_debug_begin; + TCHAR key[256]; COMInitializer initializer; COMPointer pVssAdmin; @@ -501,6 +532,7 @@ STDAPI DllUnregisterServer(void) SHDeleteKey(HKEY_CLASSES_ROOT, key); SHDeleteKey(HKEY_CLASSES_ROOT, g_szProgid); + qga_debug_end; return S_OK; /* Uninstall should never fail */ } @@ -527,6 +559,8 @@ namespace _com_util /* Stop QGA VSS provider service using Winsvc API */ STDAPI StopService(void) { + qga_debug_begin; + HRESULT hr = S_OK; SC_HANDLE manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); SC_HANDLE service = NULL; @@ -551,5 +585,6 @@ STDAPI StopService(void) out: CloseServiceHandle(service); CloseServiceHandle(manager); + qga_debug_end; return hr; } diff --git a/qga/vss-win32/provider.cpp b/qga/vss-win32/provider.cpp index 1b885e24ee..cc72e5ef1b 100644 --- a/qga/vss-win32/provider.cpp +++ b/qga/vss-win32/provider.cpp @@ -12,6 +12,7 @@ #include "qemu/osdep.h" #include "vss-common.h" +#include "vss-debug.h" #ifdef HAVE_VSS_SDK #include #else @@ -529,9 +530,11 @@ STDAPI DllCanUnloadNow() EXTERN_C BOOL WINAPI DllMain(HINSTANCE hinstDll, DWORD dwReason, LPVOID lpReserved) { + qga_debug("begin, reason = %lu", dwReason); if (dwReason == DLL_PROCESS_ATTACH) { g_hinstDll = hinstDll; DisableThreadLibraryCalls(hinstDll); } + qga_debug_end; return TRUE; } diff --git a/qga/vss-win32/requester.cpp b/qga/vss-win32/requester.cpp index f3eafacfc1..9884c65e70 100644 --- a/qga/vss-win32/requester.cpp +++ b/qga/vss-win32/requester.cpp @@ -57,6 +57,8 @@ static struct QGAVSSContext { STDAPI requester_init(void) { + qga_debug_begin; + COMInitializer initializer; /* to call CoInitializeSecurity */ HRESULT hr = CoInitializeSecurity( NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_PKT_PRIVACY, @@ -92,11 +94,14 @@ STDAPI requester_init(void) return HRESULT_FROM_WIN32(GetLastError()); } + qga_debug_end; return S_OK; } static void requester_cleanup(void) { + qga_debug_begin; + if (vss_ctx.hEventFrozen) { CloseHandle(vss_ctx.hEventFrozen); vss_ctx.hEventFrozen = NULL; @@ -118,10 +123,13 @@ static void requester_cleanup(void) vss_ctx.pVssbc = NULL; } vss_ctx.cFrozenVols = 0; + qga_debug_end; } STDAPI requester_deinit(void) { + qga_debug_begin; + requester_cleanup(); pCreateVssBackupComponents = NULL; @@ -131,11 +139,14 @@ STDAPI requester_deinit(void) hLib = NULL; } + qga_debug_end; return S_OK; } static HRESULT WaitForAsync(IVssAsync *pAsync) { + qga_debug_begin; + HRESULT ret, hr; do { @@ -151,11 +162,14 @@ static HRESULT WaitForAsync(IVssAsync *pAsync) } } while (ret == VSS_S_ASYNC_PENDING); + qga_debug_end; return ret; } static void AddComponents(ErrorSet *errset) { + qga_debug_begin; + unsigned int cWriters, i; VSS_ID id, idInstance, idWriter; BSTR bstrWriterName = NULL; @@ -237,17 +251,21 @@ out: if (pComponent && info) { pComponent->FreeComponentInfo(info); } + qga_debug_end; } DWORD get_reg_dword_value(HKEY baseKey, LPCSTR subKey, LPCSTR valueName, DWORD defaultData) { + qga_debug_begin; + DWORD regGetValueError; DWORD dwordData; DWORD dataSize = sizeof(DWORD); regGetValueError = RegGetValue(baseKey, subKey, valueName, RRF_RT_DWORD, NULL, &dwordData, &dataSize); + qga_debug_end; if (regGetValueError != ERROR_SUCCESS) { return defaultData; } @@ -262,6 +280,8 @@ bool is_valid_vss_backup_type(VSS_BACKUP_TYPE vssBT) VSS_BACKUP_TYPE get_vss_backup_type( VSS_BACKUP_TYPE defaultVssBT = DEFAULT_VSS_BACKUP_TYPE) { + qga_debug_begin; + VSS_BACKUP_TYPE vssBackupType; vssBackupType = static_cast( @@ -269,6 +289,7 @@ VSS_BACKUP_TYPE get_vss_backup_type( QGA_PROVIDER_REGISTRY_ADDRESS, "VssOption", defaultVssBT)); + qga_debug_end; if (!is_valid_vss_backup_type(vssBackupType)) { return defaultVssBT; } @@ -277,6 +298,8 @@ VSS_BACKUP_TYPE get_vss_backup_type( void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset) { + qga_debug_begin; + COMPointer pAsync; HANDLE volume; HRESULT hr; @@ -292,6 +315,7 @@ void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset) if (vss_ctx.pVssbc) { /* already frozen */ *num_vols = 0; + qga_debug("finished, already frozen"); return; } @@ -449,6 +473,7 @@ void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset) } } + qga_debug("preparing for backup"); hr = vss_ctx.pVssbc->PrepareForBackup(pAsync.replace()); if (SUCCEEDED(hr)) { hr = WaitForAsync(pAsync); @@ -472,6 +497,7 @@ void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset) * CQGAVssProvider::CommitSnapshots will kick vss_ctx.hEventFrozen * after the applications and filesystems are frozen. */ + qga_debug("do snapshot set"); hr = vss_ctx.pVssbc->DoSnapshotSet(&vss_ctx.pAsyncSnapshot); if (FAILED(hr)) { err_set(errset, hr, "failed to do snapshot set"); @@ -518,6 +544,7 @@ void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset) *num_vols = vss_ctx.cFrozenVols = num_fixed_drives; } + qga_debug("end successful"); return; out: @@ -528,11 +555,14 @@ out: out1: requester_cleanup(); CoUninitialize(); + + qga_debug_end; } void requester_thaw(int *num_vols, void *mountpints, ErrorSet *errset) { + qga_debug_begin; COMPointer pAsync; if (!vss_ctx.hEventThaw) { @@ -541,6 +571,8 @@ void requester_thaw(int *num_vols, void *mountpints, ErrorSet *errset) * and no volumes must be frozen. We return without an error. */ *num_vols = 0; + qga_debug("finished, no volumes were frozen"); + return; } @@ -597,4 +629,6 @@ void requester_thaw(int *num_vols, void *mountpints, ErrorSet *errset) CoUninitialize(); StopService(); + + qga_debug_end; }