2 Bacula® - The Network Backup Solution
4 Copyright (C) 2005-2010 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version three of the GNU Affero General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Affero General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
28 // vss.cpp -- Interface to Volume Shadow Copies (VSS)
30 // Copyright transferred from MATRIX-Computer GmbH to
31 // Kern Sibbald by express permission.
33 // Author : Thorsten Engel
34 // Created On : Fri May 06 21:44:00 2005
46 VSSClient *g_pVSSClient;
48 // {b5946137-7b9f-4925-af80-51abd60b20d5}
50 static const GUID VSS_SWPRV_ProviderID =
51 { 0xb5946137, 0x7b9f, 0x4925, { 0xaf, 0x80, 0x51, 0xab, 0xd6, 0x0b, 0x20, 0xd5 } };
58 delete (g_pVSSClient);
64 /* decide which vss class to initialize */
65 if (g_MajorVersion == 5) {
66 switch (g_MinorVersion) {
68 g_pVSSClient = new VSSClientXP();
72 g_pVSSClient = new VSSClient2003();
76 /* Vista or Longhorn or later */
77 } else if (g_MajorVersion >= 6) {
78 g_pVSSClient = new VSSClientVista();
85 VSSPathConvert(const char *szFilePath, char *szShadowPath, int nBuflen)
87 return g_pVSSClient->GetShadowPath(szFilePath, szShadowPath, nBuflen);
91 VSSPathConvertW(const wchar_t *szFilePath, wchar_t *szShadowPath, int nBuflen)
93 return g_pVSSClient->GetShadowPathW(szFilePath, szShadowPath, nBuflen);
97 VSSClient::VSSClient()
99 m_bCoInitializeCalled = false;
100 m_bCoInitializeSecurityCalled = false;
101 m_dwContext = 0; // VSS_CTX_BACKUP;
102 m_bDuringRestore = false;
103 m_bBackupIsInitialized = false;
105 m_pAlistWriterState = New(alist(10, not_owned_by_alist));
106 m_pAlistWriterInfoText = New(alist(10, owned_by_alist));
107 m_uidCurrentSnapshotSet = GUID_NULL;
108 memset(m_wszUniqueVolumeName, 0, sizeof(m_wszUniqueVolumeName));
109 memset(m_szShadowCopyName, 0, sizeof(m_szShadowCopyName));
113 VSSClient::~VSSClient()
115 // Release the IVssBackupComponents interface
116 // WARNING: this must be done BEFORE calling CoUninitialize()
118 m_pVssObject->Release();
123 delete m_pAlistWriterState;
124 delete m_pAlistWriterInfoText;
126 // Call CoUninitialize if the CoInitialize was performed successfully
127 if (m_bCoInitializeCalled)
131 bool VSSClient::InitializeForBackup(JCR *jcr)
133 //return Initialize (VSS_CTX_BACKUP);
135 return Initialize(0);
139 bool VSSClient::InitializeForRestore(JCR *jcr, bool (*VssInitCallback)(JCR *, int), WCHAR *job_metadata)
141 m_metadata = job_metadata;
143 return Initialize(0, true/*=>Restore*/, VssInitCallback);
146 bool VSSClient::GetShadowPath(const char *szFilePath, char *szShadowPath, int nBuflen)
148 if (!m_bBackupIsInitialized)
151 /* check for valid pathname */
154 bIsValidName = strlen(szFilePath) > 3;
156 bIsValidName &= isalpha (szFilePath[0]) &&
157 szFilePath[1]==':' &&
158 szFilePath[2] == '\\';
161 int nDriveIndex = toupper(szFilePath[0])-'A';
162 if (m_szShadowCopyName[nDriveIndex][0] != 0) {
164 if (WideCharToMultiByte(CP_UTF8,0,m_szShadowCopyName[nDriveIndex],-1,szShadowPath,nBuflen-1,NULL,NULL)) {
165 nBuflen -= (int)strlen(szShadowPath);
166 bstrncat(szShadowPath, szFilePath+2, nBuflen);
172 bstrncpy(szShadowPath, szFilePath, nBuflen);
177 bool VSSClient::GetShadowPathW(const wchar_t *szFilePath, wchar_t *szShadowPath, int nBuflen)
179 if (!m_bBackupIsInitialized)
182 /* check for valid pathname */
185 bIsValidName = wcslen(szFilePath) > 3;
187 bIsValidName &= iswalpha (szFilePath[0]) &&
188 szFilePath[1]==':' &&
189 szFilePath[2] == '\\';
192 int nDriveIndex = towupper(szFilePath[0])-'A';
193 if (m_szShadowCopyName[nDriveIndex][0] != 0) {
194 wcsncpy(szShadowPath, m_szShadowCopyName[nDriveIndex], nBuflen);
195 nBuflen -= (int)wcslen(m_szShadowCopyName[nDriveIndex]);
196 wcsncat(szShadowPath, szFilePath+2, nBuflen);
201 wcsncpy(szShadowPath, szFilePath, nBuflen);
207 const size_t VSSClient::GetWriterCount()
209 alist* pV = m_pAlistWriterInfoText;
213 const char* VSSClient::GetWriterInfo(int nIndex)
215 alist* pV = m_pAlistWriterInfoText;
216 return (char*)pV->get(nIndex);
220 const int VSSClient::GetWriterState(int nIndex)
222 alist* pV = m_pAlistWriterState;
223 void *item = pV->get(nIndex);
224 /* Eliminate compiler warnings */
226 return (int64_t)(char *)item;
228 return (int)(char *)item;
232 void VSSClient::AppendWriterInfo(int nState, const char* pszInfo)
234 alist* pT = m_pAlistWriterInfoText;
235 alist* pS = m_pAlistWriterState;
237 pT->push(bstrdup(pszInfo));
238 pS->push((void*)nState);
241 void VSSClient::DestroyWriterInfo()
243 alist* pT = m_pAlistWriterInfoText;
244 alist* pS = m_pAlistWriterState;