1146 |
|
|
1147 |
Fix 2008/02/05 |
Fix 2008/02/05 |
1148 |
|
|
1149 |
@ Use find_task_by_vpid() instead of find_task_pid(). |
@ Use find_task_by_vpid() instead of find_task_by_pid(). |
1150 |
|
|
1151 |
Kernel 2.6.24 introduced PID namespace. |
Kernel 2.6.24 introduced PID namespace. |
1152 |
To search PID given from userland, the kernel needs to use |
To search PID given from userland, the kernel needs to use |
1153 |
find_task_by_vpid() instead of find_task_pid(). |
find_task_by_vpid() instead of find_task_by_pid(). |
1154 |
|
|
1155 |
Fix 2008/02/14 |
Fix 2008/02/14 |
1156 |
|
|
1320 |
invoked only when execve() request was rejected. In other words, |
invoked only when execve() request was rejected. In other words, |
1321 |
this program is invoked only when the following conditions are met. |
this program is invoked only when the following conditions are met. |
1322 |
|
|
1323 |
(1) None of "allow_execute" keywords in the domain didn't match. |
(1) None of "allow_execute" keywords in the domain matched. |
1324 |
(2) The execve() request was rejected in enforcing mode. |
(2) The execve() request was rejected in enforcing mode. |
1325 |
(3) "execute_handler" keyword is not used by the domain. |
(3) "execute_handler" keyword is not used by the domain. |
1326 |
|
|
1353 |
But the original execute request is handled by the same execute handler |
But the original execute request is handled by the same execute handler |
1354 |
unless the execute handler ignores "execute_handler". |
unless the execute handler ignores "execute_handler". |
1355 |
|
|
1356 |
Version 1.6.0 2008/??/?? Feature enhancement release. |
@ Update coding style. |
1357 |
|
|
1358 |
|
I rewrote the code to pass scripts/checkpatch.pl as much as possible. |
1359 |
|
Function names were changed to use only lower letters. |
1360 |
|
|
1361 |
|
Version 1.6.0 2008/04/01 Feature enhancement release. |
1362 |
|
|
1363 |
|
Fix 2008/04/14 |
1364 |
|
|
1365 |
|
@ Fix "Compilation failures" and "Initialization ordering bugs" |
1366 |
|
with kernels before 2.4.30/2.6.11 . |
1367 |
|
|
1368 |
|
2.6 kernels before 2.6.9 didn't have include/linux/hardirq.h , |
1369 |
|
resulting compilation error at #include <linux/hardirq.h> . |
1370 |
|
I added #elif condition. |
1371 |
|
|
1372 |
|
CentOS 4.6's 2.6.9 kernel calls do_execve() before initialization of |
1373 |
|
ccs_alloc(), resulting NULL pointer dereference. |
1374 |
|
I changed __initcall to core_initcall. |
1375 |
|
|
1376 |
|
CentOS 4.6's 2.6.9 kernel backported kzalloc() from 2.6.14 , |
1377 |
|
resulting compilation error at kzalloc(). |
1378 |
|
I modified prototype of kzalloc(). |
1379 |
|
|
1380 |
|
Fix 2008/04/20 |
1381 |
|
|
1382 |
|
@ Fix "Compilation failures" with kernels before 2.4.30/2.6.11 . |
1383 |
|
|
1384 |
|
Turbolinux 10 Server's 2.6.8 kernel backported kzalloc() as an inlined |
1385 |
|
function, resulting compilation error at kzalloc(). |
1386 |
|
I converted kzalloc() from an inlined function into a macro. |
1387 |
|
|
1388 |
|
Fix 2008/04/21 |
1389 |
|
|
1390 |
|
@ Add workaround for gcc 3.2.2's inline bug. |
1391 |
|
|
1392 |
|
RedHat Linux 9's gcc 3.2.2 generated a bad code |
1393 |
|
if ((var_of_u8 & 0x000000BF) & 0x80000000) { } |
1394 |
|
where the expected code is |
1395 |
|
if ((var_of_u8 & 0xBF) & 0x80) { } |
1396 |
|
when embedding ccs_acl_type2() into print_entry(), |
1397 |
|
resulting runtime BUG(). |
1398 |
|
I added the expected code explicitly as a workaround. |
1399 |
|
|
1400 |
|
Fix 2008/05/06 |
1401 |
|
|
1402 |
|
@ Add memory quota. |
1403 |
|
|
1404 |
|
1.5.x returns -ENOMEM when FindNextDomain() failed to create a new |
1405 |
|
domain, but I forgot to return -ENOMEM when find_next_domain() failed to |
1406 |
|
create a new domain. |
1407 |
|
|
1408 |
|
A domain is automatically created by find_next_domain() only if |
1409 |
|
the domain for the requested program doesn't exist. |
1410 |
|
This behavior is for the administrator's convenience. |
1411 |
|
The administrator needn't to know how many domains are needed for running |
1412 |
|
the whole programs in the system beforehand when developing the policy. |
1413 |
|
But the administrator does not want the kernel to reject execution of the |
1414 |
|
requested program when developing the policy. |
1415 |
|
|
1416 |
|
So, I think it is better to grant execution of programs even if |
1417 |
|
find_next_domain() failed to create a new domain than reject execution. |
1418 |
|
Thus, I decided not to return -ENOMEM when find_next_domain() failed to |
1419 |
|
create a new domain. This exception breaks the domain transition rules, |
1420 |
|
so I print "transition_failed" warning in /proc/ccs/domain_policy |
1421 |
|
when this exception happened. |
1422 |
|
|
1423 |
|
Also, to prevent the system from being halted by unexpectedly allocating |
1424 |
|
all kernel memory for the policy, I added memory quota. |
1425 |
|
This quota is configurable via /proc/ccs/meminfo like |
1426 |
|
|
1427 |
|
echo Shared: 1048576 > /proc/ccs/meminfo |
1428 |
|
echo Private: 1048576 > /proc/ccs/meminfo |
1429 |
|
|
1430 |
|
Version 1.6.1 2008/05/10 Bug fix release. |
1431 |
|
|
1432 |
|
Fix 2008/06/04 |
1433 |
|
|
1434 |
|
@ Check open mode of /proc/ccs/ interface. |
1435 |
|
|
1436 |
|
It turned out that I can avoid allocating memory for reading if |
1437 |
|
FMODE_READ is not set and memory for writing if FMODE_WRITE is not set. |
1438 |
|
|
1439 |
|
@ Wait for completion of /sbin/ccs-init . |
1440 |
|
|
1441 |
|
Since 2.4 kernel's call_usermodehelper() can't wait for termination of |
1442 |
|
the executed program, I was using the close() request of |
1443 |
|
/proc/ccs/meminfo to indicate that loading policy has finished. |
1444 |
|
But since /proc/ccs/meminfo could be accessed for setting memory quota |
1445 |
|
by /etc/ccs/ccs-post-init , I stopped using the close() request. |
1446 |
|
The policy loader no longer need to access /proc/ccs/meminfo to notify |
1447 |
|
the kernel that loading policy has finished. |
1448 |
|
|
1449 |
|
Fix 2008/06/05 |
1450 |
|
|
1451 |
|
@ Fix realpath for pipes and sockets. |
1452 |
|
|
1453 |
|
Kernel 2.6.22 and later use different method for calculating d_path(). |
1454 |
|
Since fs/realpath.c didn't notice the change, the realpath of pipes |
1455 |
|
appeared as "pipe:" rather than "pipe:[\$]" when they are opened via |
1456 |
|
/proc/PID/fd/ directory. |
1457 |
|
|
1458 |
|
@ Add process's information into /proc/ccs/query . |
1459 |
|
|
1460 |
|
While /proc/ccs/grant_log and /proc/ccs/reject_log contain process's |
1461 |
|
information, /proc/ccs/query doesn't contain it. |
1462 |
|
To be able to utilize ccs-queryd and ccs-notifyd more, I added it into |
1463 |
|
/proc/ccs/query . |