[sql] Move time-machine support from third_party/sqlite to sql/

third_party/sqlite/src/src/pager.c

 /*
 ** 2001 September 15
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
@@ skipping 5479 matching lines @@
     pagerReleaseMapPage(pPg);
   }else{
     sqlite3PcacheRelease(pPg);
   }
   pagerUnlockIfUnused(pPager);
 }
 void sqlite3PagerUnref(DbPage *pPg){
   if( pPg ) sqlite3PagerUnrefNotNull(pPg);
 }
 
-#if defined(__APPLE__)
-/*
-** Create and return a CFURLRef given a cstring containing the path to a file.
-*/
-static CFURLRef create_cfurl_from_cstring(const char* filePath){
-  CFStringRef urlString = CFStringCreateWithFileSystemRepresentation(
-      kCFAllocatorDefault, filePath);
-  CFURLRef urlRef = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
-      urlString, kCFURLPOSIXPathStyle, FALSE);
-  CFRelease(urlString);
-  return urlRef;
-}
-#endif
-
 /*
 ** This function is called at the start of every write transaction.
 ** There must already be a RESERVED or EXCLUSIVE lock on the database 
 ** file when this routine is called.
 **
 ** Open the journal file for pager pPager and write a journal header
 ** to the start of it. If there are active savepoints, open the sub-journal
 ** as well. This function is only used when the journal file is being 
 ** opened to write a rollback log for a transaction. It is not used 
 ** when opening a hot journal file to roll it back.
@@ skipping 44 matching lines @@
         ** it was originally opened. */
         rc = databaseIsUnmoved(pPager);
         if( rc==SQLITE_OK ){
 #ifdef SQLITE_ENABLE_ATOMIC_WRITE
           rc = sqlite3JournalOpen(
               pVfs, pPager->zJournal, pPager->jfd, flags, jrnlBufferSize(pPager)
           );
 #else
           rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0);
 #endif
-#if defined(__APPLE__)
-          /* Set the TimeMachine exclusion metadata for the journal if it has
-          ** been set for the database. Only do this for unix-type vfs
-          ** implementations. */
-          if( rc==SQLITE_OK && pPager->zFilename!=NULL
-           && strlen(pPager->zFilename)>0
-           && strncmp(pVfs->zName, "unix", 4)==0
-           && ( pVfs->zName[4]=='-' || pVfs->zName[4]=='\0' ) ){
-            CFURLRef database = create_cfurl_from_cstring(pPager->zFilename);
-            if( CSBackupIsItemExcluded(database, NULL) ){
-              CFURLRef journal = create_cfurl_from_cstring(pPager->zJournal);
-              /* Ignore errors from the following exclusion call. */
-              CSBackupSetItemExcluded(journal, TRUE, FALSE);
-              CFRelease(journal);
-            }
-            CFRelease(database);
-          }
-#endif
         }
       }
       assert( rc!=SQLITE_OK || isOpen(pPager->jfd) );
     }
   
   
     /* Write the first journal header to the journal file and open 
     ** the sub-journal if necessary.
     */
     if( rc==SQLITE_OK ){
@@ skipping 1778 matching lines @@
 ** is empty, return 0.
 */
 int sqlite3PagerWalFramesize(Pager *pPager){
   assert( pPager->eState>=PAGER_READER );
   return sqlite3WalFramesize(pPager->pWal);
 }
 #endif
 
 
 #endif /* SQLITE_OMIT_DISKIO */