# 2011 May 09 # # 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. # #*********************************************************************** # # This file contains tests for using WAL databases in read-only mode. # set testdir [file dirname $argv0] source $testdir/tester.tcl source $testdir/lock_common.tcl set ::testprefix walro # These tests are only going to work on unix. # if {$::tcl_platform(platform) != "unix"} { finish_test return } # And only if the build is WAL-capable. # ifcapable !wal { finish_test return } if ![wal_is_ok] { finish_test; return } set shmpath test.db-shm if {[forced_proxy_locking]} { sqlite3 db test.db set shmpath [execsql { pragma lock_proxy_file }]-shm db close } do_multiclient_test tn { # Do not run tests with the connections in the same process. # if {$tn==2} continue # Close all connections and delete the database. # code1 { db close } code2 { db2 close } code3 { db3 close } forcedelete test.db forcedelete walro foreach c {code1 code2 code3} { $c { sqlite3_shutdown sqlite3_config_uri 1 } } file mkdir walro do_test 1.1.1 { code2 { sqlite3 db2 test.db } sql2 { PRAGMA journal_mode = WAL; CREATE TABLE t1(x, y); INSERT INTO t1 VALUES('a', 'b'); } file exists $shmpath } {1} do_test 1.1.2 { file attributes $shmpath -permissions r--r--r-- code1 { sqlite3 db file:test.db?readonly_shm=1 } } {} do_test 1.1.3 { sql1 "SELECT * FROM t1" } {a b} do_test 1.1.4 { sql2 "INSERT INTO t1 VALUES('c', 'd')" } {} do_test 1.1.5 { sql1 "SELECT * FROM t1" } {a b c d} # Check that the read-only connection cannot write or checkpoint the db. # do_test 1.1.6 { csql1 "INSERT INTO t1 VALUES('e', 'f')" } {1 {attempt to write a readonly database}} do_test 1.1.7 { csql1 "PRAGMA wal_checkpoint" } {1 {attempt to write a readonly database}} do_test 1.1.9 { sql2 "INSERT INTO t1 VALUES('e', 'f')" } {} do_test 1.1.10 { sql1 "SELECT * FROM t1" } {a b c d e f} do_test 1.1.11 { sql2 { INSERT INTO t1 VALUES('g', 'h'); PRAGMA wal_checkpoint; } set {} {} } {} do_test 1.1.12 { sql1 "SELECT * FROM t1" } {a b c d e f g h} do_test 1.1.13 { sql2 "INSERT INTO t1 VALUES('i', 'j')" } {} do_test 1.2.1 { code2 { db2 close } code1 { db close } list [file exists test.db-wal] [file exists $shmpath] } {1 1} do_test 1.2.2 { code1 { sqlite3 db file:test.db?readonly_shm=1 } sql1 { SELECT * FROM t1 } } {a b c d e f g h i j} do_test 1.2.3 { code1 { db close } file attributes $shmpath -permissions rw-r--r-- hexio_write $shmpath 0 01020304 file attributes $shmpath -permissions r--r--r-- code1 { sqlite3 db file:test.db?readonly_shm=1 } csql1 { SELECT * FROM t1 } } {1 {attempt to write a readonly database}} do_test 1.2.4 { code1 { sqlite3_extended_errcode db } } {SQLITE_READONLY_RECOVERY} do_test 1.2.5 { file attributes $shmpath -permissions rw-r--r-- code2 { sqlite3 db2 test.db } sql2 "SELECT * FROM t1" } {a b c d e f g h i j} file attributes $shmpath -permissions r--r--r-- do_test 1.2.6 { sql1 "SELECT * FROM t1" } {a b c d e f g h i j} do_test 1.2.7 { sql2 { PRAGMA wal_checkpoint; INSERT INTO t1 VALUES('k', 'l'); } set {} {} } {} do_test 1.2.8 { sql1 "SELECT * FROM t1" } {a b c d e f g h i j k l} # Now check that if the readonly_shm option is not supplied, or if it # is set to zero, it is not possible to connect to the database without # read-write access to the shm. do_test 1.3.1 { code1 { db close } code1 { sqlite3 db test.db } csql1 { SELECT * FROM t1 } } {1 {unable to open database file}} # Also test that if the -shm file can be opened for read/write access, # it is not if readonly_shm=1 is present in the URI. do_test 1.3.2.1 { code1 { db close } code2 { db2 close } file exists $shmpath } {0} do_test 1.3.2.2 { code1 { sqlite3 db file:test.db?readonly_shm=1 } csql1 { SELECT * FROM sqlite_master } } {1 {unable to open database file}} do_test 1.3.2.3 { code1 { db close } close [open $shmpath w] file attributes $shmpath -permissions r--r--r-- code1 { sqlite3 db file:test.db?readonly_shm=1 } csql1 { SELECT * FROM t1 } } {1 {attempt to write a readonly database}} do_test 1.3.2.4 { code1 { sqlite3_extended_errcode db } } {SQLITE_READONLY_RECOVERY} } forcedelete $shmpath finish_test