diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/main.c | 5 | ||||
| -rw-r--r-- | src/sqlite.h.in | 10 |
2 files changed, 13 insertions, 2 deletions
diff --git a/src/main.c b/src/main.c index 25216070d..f9e1a1c13 100644 --- a/src/main.c +++ b/src/main.c @@ -2356,7 +2356,10 @@ int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, void *pArg){ assert( pPager!=0 ); fd = sqlite3PagerFile(pPager); assert( fd!=0 ); - if( fd->pMethods ){ + if( op==SQLITE_FCNTL_FILE_POINTER ){ + *(sqlite3_file**)pArg = fd; + rc = SQLITE_OK; + }else if( fd->pMethods ){ rc = sqlite3OsFileControl(fd, op, pArg); } sqlite3BtreeLeave(pBtree); diff --git a/src/sqlite.h.in b/src/sqlite.h.in index 1138cb2a5..95c381274 100644 --- a/src/sqlite.h.in +++ b/src/sqlite.h.in @@ -705,6 +705,8 @@ struct sqlite3_io_methods { #define SQLITE_LAST_ERRNO 4 #define SQLITE_FCNTL_SIZE_HINT 5 #define SQLITE_FCNTL_CHUNK_SIZE 6 +#define SQLITE_FCNTL_FILE_POINTER 7 + /* ** CAPI3REF: Mutex Handle @@ -5234,7 +5236,7 @@ sqlite3_mutex *sqlite3_db_mutex(sqlite3*); ** ^The [sqlite3_file_control()] interface makes a direct call to the ** xFileControl method for the [sqlite3_io_methods] object associated ** with a particular database identified by the second argument. ^The -** name of the database "main" for the main database or "temp" for the +** name of the database is "main" for the main database or "temp" for the ** TEMP database, or the name that appears after the AS keyword for ** databases that are added using the [ATTACH] SQL command. ** ^A NULL pointer can be used in place of "main" to refer to the @@ -5244,6 +5246,12 @@ sqlite3_mutex *sqlite3_db_mutex(sqlite3*); ** the xFileControl method. ^The return value of the xFileControl ** method becomes the return value of this routine. ** +** ^The SQLITE_FCNTL_FILE_POINTER value for the op parameter causes +** a pointer to the underlying [sqlite3_file] object to be written into +** the space pointed to by the 4th parameter. ^The SQLITE_FCNTL_FILE_POINTER +** case is a short-circuit path which does not actually invoke the +** underlying sqlite3_io_methods.xFileControl method. +** ** ^If the second parameter (zDbName) does not match the name of any ** open database file, then SQLITE_ERROR is returned. ^This error ** code is not remembered and will not be recalled by [sqlite3_errcode()] |