| # 2008 July 9 |
| # |
| # 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 implements regression tests for SQLite library. |
| # |
| # This file implements tests to make sure SQLite does not crash or |
| # segfault if it sees a corrupt database file. It specifically focuses |
| # on corrupt pointer map pages. |
| # |
| # $Id: corrupt8.test,v 1.2 2008/07/11 03:34:10 drh Exp $ |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| # Do not use a codec for tests in this file, as the database file is |
| # manipulated directly using tcl scripts (using the [hexio_write] command). |
| # |
| do_not_use_codec |
| |
| # We must have the page_size pragma for these tests to work. |
| # |
| ifcapable !pager_pragmas||!autovacuum { |
| finish_test |
| return |
| } |
| |
| # Create a database to work with. |
| # |
| do_test corrupt8-1.1 { |
| execsql { |
| PRAGMA auto_vacuum=1; |
| PRAGMA page_size=1024; |
| CREATE TABLE t1(x); |
| INSERT INTO t1(x) VALUES(1); |
| INSERT INTO t1(x) VALUES(2); |
| INSERT INTO t1(x) SELECT x+2 FROM t1; |
| INSERT INTO t1(x) SELECT x+4 FROM t1; |
| INSERT INTO t1(x) SELECT x+8 FROM t1; |
| INSERT INTO t1(x) SELECT x+16 FROM t1; |
| INSERT INTO t1(x) SELECT x+32 FROM t1; |
| INSERT INTO t1(x) SELECT x+64 FROM t1; |
| INSERT INTO t1(x) SELECT x+128 FROM t1; |
| INSERT INTO t1(x) SELECT x+256 FROM t1; |
| CREATE TABLE t2(a,b); |
| INSERT INTO t2 SELECT x, x*x FROM t1; |
| } |
| expr {[file size test.db]>1024*12} |
| } {1} |
| integrity_check corrupt8-1.2 |
| |
| # Loop through each ptrmap entry. Corrupt the entry and make sure the |
| # corruption is detected by the integrity_check. |
| # |
| for {set i 1024} {$i<2048} {incr i 5} { |
| set oldval [hexio_read test.db $i 1] |
| if {$oldval==0} break |
| hexio_write test.db $i 00 |
| do_test corrupt8-2.$i.0 { |
| db close |
| sqlite3 db test.db |
| set x [db eval {PRAGMA integrity_check}] |
| expr {$x!="ok"} |
| } {1} |
| for {set k 1} {$k<=5} {incr k} { |
| if {$k==$oldval} continue |
| hexio_write test.db $i 0$k |
| do_test corrupt8-2.$i.$k { |
| db close |
| sqlite3 db test.db |
| set x [db eval {PRAGMA integrity_check}] |
| expr {$x!="ok"} |
| } {1} |
| } |
| hexio_write test.db $i 06 |
| do_test corrupt8-2.$i.6 { |
| db close |
| sqlite3 db test.db |
| set x [db eval {PRAGMA integrity_check}] |
| expr {$x!="ok"} |
| } {1} |
| hexio_write test.db $i $oldval |
| if {$oldval>2} { |
| set i2 [expr {$i+1+$i%4}] |
| set oldval [hexio_read test.db $i2 1] |
| hexio_write test.db $i2 [format %02x [expr {($oldval+1)&0xff}]] |
| do_test corrupt8-2.$i.7 { |
| db close |
| sqlite3 db test.db |
| set x [db eval {PRAGMA integrity_check}] |
| expr {$x!="ok"} |
| } {1} |
| hexio_write test.db $i2 $oldval |
| } |
| } |
| |
| |
| finish_test |