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Overview
| Comment: | Fix a crash that can follow an OOM when "all tables" are registered with a session module. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | sessions |
| Files: | files | file ages | folders |
| SHA1: |
183c236e991faaabdc768e52e926c52c |
| User & Date: | dan 2011-03-22 16:54:12 |
Context
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2011-03-22
| ||
| 18:45 | Add API function sqlite3_preupdate_depth(), for determining the depth of the trigger stack from within a pre-update callback. check-in: bdea7089 user: dan tags: sessions | |
| 16:54 | Fix a crash that can follow an OOM when "all tables" are registered with a session module. check-in: 183c236e user: dan tags: sessions | |
| 15:21 | If a NULL pointer is passed to sqlite3session_attach() in place of a table name, attach all database tables to the session object. check-in: e9037e4e user: dan tags: sessions | |
Changes
Changes to ext/session/sessionfault.test.
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faultsim_save_and_close
db2 close
#-------------------------------------------------------------------------
# Test OOM error handling when collecting and applying a simple changeset.
#
do_faultsim_test pagerfault-1 -faults oom-* -prep {
catch {db2 close}
catch {db close}
faultsim_restore_and_reopen
sqlite3 db2 test.db2
} -body {
do_then_apply_sql {
INSERT INTO t1 VALUES(7, 8, 9);
................................................................................
DELETE FROM t1 WHERE a = 4;
}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
faultsim_integrity_check
if {$testrc==0} { compare_db db db2 }
}
#-------------------------------------------------------------------------
# The following block of tests - pagerfault-2.* - are designed to check
# the handling of faults in the sqlite3changeset_apply() function.
#
catch {db close}
catch {db2 close}
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faultsim_save_and_close db2 close #------------------------------------------------------------------------- # Test OOM error handling when collecting and applying a simple changeset. # # Test 1.1 attaches tables individually by name to the session object. # Whereas test 1.2 passes NULL to sqlite3session_attach() to attach all # tables. # do_faultsim_test pagerfault-1.1 -faults oom-* -prep { catch {db2 close} catch {db close} faultsim_restore_and_reopen sqlite3 db2 test.db2 } -body { do_then_apply_sql { INSERT INTO t1 VALUES(7, 8, 9); ................................................................................ DELETE FROM t1 WHERE a = 4; } } -test { faultsim_test_result {0 {}} {1 SQLITE_NOMEM} faultsim_integrity_check if {$testrc==0} { compare_db db db2 } } do_faultsim_test pagerfault-1.2 -faults oom-* -prep { catch {db2 close} catch {db close} faultsim_restore_and_reopen } -body { sqlite3session S db main S attach * execsql { INSERT INTO t1 VALUES(7, 8, 9); UPDATE t1 SET c = 10 WHERE a = 1; DELETE FROM t1 WHERE a = 4; } set ::changeset [S changeset] set {} {} } -test { catch { S delete } faultsim_test_result {0 {}} {1 SQLITE_NOMEM} faultsim_integrity_check if {$testrc==0} { proc xConflict {args} { return "OMIT" } sqlite3 db2 test.db2 sqlite3changeset_apply db2 $::changeset xConflict compare_db db db2 } } #------------------------------------------------------------------------- # The following block of tests - pagerfault-2.* - are designed to check # the handling of faults in the sqlite3changeset_apply() function. # catch {db close} catch {db2 close} |
Changes to ext/session/sqlite3session.c.
777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 |
if( sqlite3_strnicmp(zDb, pSession->zDb, nDb+1) ) continue;
for(pTab=pSession->pTable; pTab || pSession->bAutoAttach; pTab=pTab->pNext){
if( !pTab ){
/* This branch is taken if table zName has not yet been attached to
** this session and the auto-attach flag is set. */
pSession->rc = sqlite3session_attach(pSession,zName);
if( pSession->rc ) continue;
pTab = pSession->pTable;
assert( 0==sqlite3_strnicmp(pTab->zName, zName, nName+1) );
}
if( 0==sqlite3_strnicmp(pTab->zName, zName, nName+1) ){
sessionPreupdateOneChange(op, pSession, pTab);
if( op==SQLITE_UPDATE ){
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777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 |
if( sqlite3_strnicmp(zDb, pSession->zDb, nDb+1) ) continue;
for(pTab=pSession->pTable; pTab || pSession->bAutoAttach; pTab=pTab->pNext){
if( !pTab ){
/* This branch is taken if table zName has not yet been attached to
** this session and the auto-attach flag is set. */
pSession->rc = sqlite3session_attach(pSession,zName);
if( pSession->rc ) break;
pTab = pSession->pTable;
assert( 0==sqlite3_strnicmp(pTab->zName, zName, nName+1) );
}
if( 0==sqlite3_strnicmp(pTab->zName, zName, nName+1) ){
sessionPreupdateOneChange(op, pSession, pTab);
if( op==SQLITE_UPDATE ){
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