# 2011 March 30
#
# 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 the "unix-excl" VFS module (part of
# os_unix.c).
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl
if {$::tcl_platform(platform)!="unix" || [info commands test_syscall]==""} {
finish_test
return
}
set testprefix unixexcl
# Test that when using VFS "unix-excl", the first time the database is read
# a process-wide exclusive lock is taken on it. This means other connections
# within the process may still access the db normally, but connections from
# outside the process cannot.
#
do_multiclient_test tn {
do_test unixexcl-1.$tn.1 {
sql1 {
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES('hello', 'world');
}
} {}
do_test unixexcl-1.$tn.2 { sql2 { SELECT * FROM t1 } } {hello world}
do_test unixexcl-1.$tn.3 {
code1 {
db close
sqlite3 db test.db -vfs unix-excl
db eval { SELECT * FROM t1 }
}
} {hello world}
if {$tn==1} {
do_test unixexcl-1.$tn.4.multiproc {
csql2 { SELECT * FROM t1 }
} {1 {database is locked}}
} else {
do_test unixexcl-1.$tn.4.singleproc {
csql2 { SELECT * FROM t1 }
} {0 {hello world}}
}
}
# Test that when using VFS "unix-excl", if a file is opened in read-only mode
# the behaviour is the same as if VFS "unix" were used.
#
do_multiclient_test tn {
do_test unixexcl-2.$tn.1 {
sql1 {
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES('hello', 'world');
}
} {}
do_test unixexcl-2.$tn.2 { sql2 { SELECT * FROM t1 } } {hello world}
do_test unixexcl-2.$tn.3 {
code1 {
db close
sqlite3 db test.db -readonly yes -vfs unix-excl
db eval { SELECT * FROM t1 }
}
} {hello world}
do_test unixexcl-2.$tn.4 {
csql2 { SELECT * FROM t1 }
} {0 {hello world}}
}
do_multiclient_test tn {
do_test unixexcl-3.$tn.1 {
code1 { db close; sqlite3 db file:test.db?psow=0 -vfs unix-excl -uri 1 }
code2 { db2 close; sqlite3 db2 file:test.db?psow=0 -vfs unix-excl -uri 1 }
sql1 {
PRAGMA auto_vacuum = 0;
PRAGMA journal_mode = WAL;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
}
} {wal}
if {$tn==1} {
do_test unixexcl-3.$tn.1.multiproc {
csql2 { SELECT * FROM t1; }
} {1 {database is locked}}
} else {
do_test unixexcl-3.$tn.1.singleproc {
sql2 { SELECT * FROM t1; }
} {1 2}
do_test unixexcl-3.$tn.2 {
sql2 {
BEGIN;
SELECT * FROM t1;
}
} {1 2}
do_test unixexcl-3.$tn.3 {
sql1 { PRAGMA wal_checkpoint; INSERT INTO t1 VALUES(3, 4); }
} {0 3 3}
do_test unixexcl-3.$tn.4 {
sql2 { SELECT * FROM t1; }
} {1 2}
do_test unixexcl-3.$tn.5 {
sql1 { SELECT * FROM t1; }
} {1 2 3 4}
do_test unixexcl-3.$tn.6 {
sql2 { COMMIT; SELECT * FROM t1; }
} {1 2 3 4}
do_test unixexcl-3.$tn.7 {
sql1 { PRAGMA wal_checkpoint; }
} {0 4 4}
}
}
finish_test