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Choose any three.
#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_CREATE 0x00000004 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */ #define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */ #define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */ #define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_MEMORY 0x00000080 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */ #define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */ #define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */ #define SQLITE_OPEN_MAIN_JOURNAL 0x00000800 /* VFS only */ #define SQLITE_OPEN_TEMP_JOURNAL 0x00001000 /* VFS only */ #define SQLITE_OPEN_SUBJOURNAL 0x00002000 /* VFS only */ #define SQLITE_OPEN_SUPER_JOURNAL 0x00004000 /* VFS only */ #define SQLITE_OPEN_NOMUTEX 0x00008000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_FULLMUTEX 0x00010000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_SHAREDCACHE 0x00020000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_WAL 0x00080000 /* VFS only */ #define SQLITE_OPEN_NOFOLLOW 0x01000000 /* Ok for sqlite3_open_v2() */ #define SQLITE_OPEN_EXRESCODE 0x02000000 /* Extended result codes */
These bit values are intended for use in the 3rd parameter to the sqlite3_open_v2() interface and in the 4th parameter to the sqlite3_vfs.xOpen method.
Only those flags marked as "Ok for sqlite3_open_v2()" may be used as the third argument to the sqlite3_open_v2() interface. The other flags have historically been ignored by sqlite3_open_v2(), though future versions of SQLite might change so that an error is raised if any of the disallowed bits are passed into sqlite3_open_v2(). Applications should not depend on the historical behavior.
Note in particular that passing the SQLITE_OPEN_EXCLUSIVE flag into sqlite3_open_v2() does *not* cause the underlying database file to be opened using O_EXCL. Passing SQLITE_OPEN_EXCLUSIVE into sqlite3_open_v2() has historically be a no-op and might become an error in future versions of SQLite.