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Add a version number to the wal-index header. If SQLite encounters a version number in either the wal or wal-index files that it does not understand, the operation is abandoned and SQLITE_CANTOPEN returned.

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FossilOrigin-Name: 8d0f8a7f70d6fb42369411a934b30f8c8ca8322f
This commit is contained in:
dan
2010-06-23 15:55:43 +00:00
parent b316cb22de
commit 10f5a50e57
13 changed files with 324 additions and 152 deletions
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65
test/wal2.test
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@ -16,12 +16,15 @@
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl
source $testdir/wal_common.tcl
ifcapable !wal {finish_test ; return }
proc set_tvfs_hdr {file args} {
# Set $nHdr to the number of bytes in the wal-index header:
set nHdr 40
set nHdr 48
set nInt [expr {$nHdr/4}]
if {[llength $args]>2} {
@ -880,7 +883,7 @@ foreach {tn hdr1 hdr2 res} [list \
5 $wih(2) $wih(1) {Barton Deakin Watson} \
6 $wih(2) $wih(2) {Barton Deakin Watson} \
7 $wih(1) $wih(1) {Barton Deakin} \
8 {0 0 0 0 0 0 0 0 0 0} {0 0 0 0 0 0 0 0 0 0} {Barton Deakin Watson} \
8 {0 0 0 0 0 0 0 0 0 0 0 0} {0 0 0 0 0 0 0 0 0 0 0 0} {Barton Deakin Watson}
] {
do_test wal2-9.$tn {
set_tvfs_hdr $::filename $hdr1 $hdr2
@ -891,4 +894,62 @@ foreach {tn hdr1 hdr2 res} [list \
db2 close
db close
#-------------------------------------------------------------------------
# This block of tests - wal2-10.* - focus on the libraries response to
# new versions of the wal or wal-index formats.
#
# wal2-10.1.*: Test that the library refuses to "recover" a new WAL
# format.
#
# wal2-10.2.*: Test that the library refuses to read or write a database
# if the wal-index version is newer than it understands.
#
# At time of writing, the only versions of the wal and wal-index formats
# that exist are versions 3007000 (corresponding to SQLite version 3.7.0,
# the first version of SQLite to feature wal mode).
#
do_test wal2-10.1.1 {
faultsim_delete_and_reopen
execsql {
PRAGMA journal_mode = WAL;
CREATE TABLE t1(a, b);
PRAGMA wal_checkpoint;
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(3, 4);
}
faultsim_save_and_close
} {}
do_test wal2-10.1.2 {
faultsim_restore_and_reopen
execsql { SELECT * FROM t1 }
} {1 2 3 4}
do_test wal2-10.1.3 {
faultsim_restore_and_reopen
set hdr [wal_set_walhdr test.db-wal]
lindex $hdr 1
} {3007000}
do_test wal2-10.1.4 {
lset hdr 1 3007001
wal_set_walhdr test.db-wal $hdr
catchsql { SELECT * FROM t1 }
} {1 {unable to open database file}}
testvfs tvfs -default 1
do_test wal2-10.2.1 {
faultsim_restore_and_reopen
execsql { SELECT * FROM t1 }
} {1 2 3 4}
do_test wal2-10.2.2 {
set hdr [set_tvfs_hdr $::filename]
lindex $hdr 0
} {3007000}
breakpoint
do_test wal2-10.2.3 {
lset hdr 0 3007001
wal_fix_walindex_cksum hdr
set_tvfs_hdr $::filename $hdr
catchsql { SELECT * FROM t1 }
} {1 {unable to open database file}}
finish_test