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177 lines
4.6 KiB
Plaintext
177 lines
4.6 KiB
Plaintext
# 2014-01-20
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix corruptH
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# This module uses hard-coded offsets which do not work if the reserved_bytes
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# value is nonzero.
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if {[nonzero_reserved_bytes]} {finish_test; return;}
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database_may_be_corrupt
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# The corruption migrations tested by the code in this file are not detected
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# mmap mode.
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#
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# The reason is that in mmap mode, the different queries may use different
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# PgHdr objects for the same page (same data, but different PgHdr container
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# objects). And so the corruption is not detected.
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#
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if {[permutation]=="mmap"} {
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finish_test
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return
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}
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# Initialize the database.
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#
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do_execsql_test 1.1 {
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PRAGMA page_size=1024;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
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INSERT INTO t1 VALUES(1, 'one');
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INSERT INTO t1 VALUES(2, 'two');
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CREATE TABLE t2(x);
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INSERT INTO t2 VALUES(randomblob(200));
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INSERT INTO t2 SELECT randomblob(200) FROM t2;
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INSERT INTO t2 SELECT randomblob(200) FROM t2;
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INSERT INTO t2 SELECT randomblob(200) FROM t2;
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INSERT INTO t2 SELECT randomblob(200) FROM t2;
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INSERT INTO t2 SELECT randomblob(200) FROM t2;
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INSERT INTO t2 SELECT randomblob(200) FROM t2;
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} {}
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# Corrupt the file so that the root page of t1 is also linked into t2 as
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# a leaf page.
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#
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do_test 1.2 {
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db eval { SELECT name, rootpage FROM sqlite_master } {
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set r($name) $rootpage
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}
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db close
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hexio_write test.db [expr {($r(t2)-1)*1024 + 11}] [format %.2X $r(t1)]
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sqlite3 db test.db
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} {}
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do_test 1.3 {
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db eval { PRAGMA secure_delete=1 }
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list [catch {
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db eval { SELECT * FROM t1 WHERE a IN (1, 2) } {
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db eval { DELETE FROM t2 }
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}
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} msg] $msg
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} {1 {database disk image is malformed}}
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#-------------------------------------------------------------------------
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reset_db
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# Initialize the database.
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#
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do_execsql_test 2.1 {
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PRAGMA auto_vacuum=0;
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PRAGMA page_size=1024;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
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INSERT INTO t1 VALUES(1, 'one');
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INSERT INTO t1 VALUES(2, 'two');
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CREATE TABLE t3(x);
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CREATE TABLE t2(x PRIMARY KEY) WITHOUT ROWID;
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INSERT INTO t2 VALUES(randomblob(100));
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DROP TABLE t3;
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} {}
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do_test 2.2 {
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db eval { SELECT name, rootpage FROM sqlite_master } {
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set r($name) $rootpage
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}
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db close
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set fl [hexio_get_int [hexio_read test.db 32 4]]
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hexio_write test.db [expr {($fl-1) * 1024 + 0}] 00000000
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hexio_write test.db [expr {($fl-1) * 1024 + 4}] 00000001
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hexio_write test.db [expr {($fl-1) * 1024 + 8}] [format %.8X $r(t1)]
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hexio_write test.db 36 00000002
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sqlite3 db test.db
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} {}
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# The trick here is that the root page of the tree scanned by the outer
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# query is also currently on the free-list. So while the first seek on
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# the table (for a==1) works, by the time the second is attempted The
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# "INSERT INTO t2..." statements have recycled the root page of t1 and
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# used it as an index leaf. Normally, BtreeMovetoUnpacked() detects
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# that the PgHdr object associated with said root page does not match
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# the cursor (as it is now marked with PgHdr.intKey==0) and returns
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# SQLITE_CORRUPT.
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#
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set res23 {1 {database disk image is malformed}}
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do_test 2.3 {
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list [catch {
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set res [list]
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db eval { SELECT * FROM t1 WHERE a IN (1, 2) } {
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db eval {
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INSERT INTO t2 SELECT randomblob(100) FROM t2;
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INSERT INTO t2 SELECT randomblob(100) FROM t2;
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INSERT INTO t2 SELECT randomblob(100) FROM t2;
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INSERT INTO t2 SELECT randomblob(100) FROM t2;
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INSERT INTO t2 SELECT randomblob(100) FROM t2;
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}
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lappend res $b
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}
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set res
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} msg] $msg
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} $res23
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#-------------------------------------------------------------------------
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reset_db
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# Initialize the database.
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#
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do_execsql_test 3.1 {
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PRAGMA page_size=1024;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
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INSERT INTO t1 VALUES(1, 'one');
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INSERT INTO t1 VALUES(2, 'two');
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CREATE TABLE t2(c INTEGER PRAGMA KEY, d);
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INSERT INTO t2 VALUES(1, randomblob(1100));
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} {}
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do_test 3.2 {
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db eval { SELECT name, rootpage FROM sqlite_master } {
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set r($name) $rootpage
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}
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db close
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hexio_write test.db [expr {($r(t2)-1) * 1024 + 1020}] 00000002
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sqlite3 db test.db
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} {}
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do_test 3.3 {
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list [catch {
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db eval { SELECT * FROM t1 WHERE a IN (1, 2) } {
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db eval {
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DELETE FROM t2 WHERE c=1;
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}
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}
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} msg] $msg
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} {1 {database disk image is malformed}}
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finish_test
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