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revision 1319 by kumaneko, Sun Jun 22 03:31:36 2008 UTC revision 1609 by kumaneko, Fri Sep 19 09:15:43 2008 UTC
# Line 1469  Fix 2008/06/10 Line 1469  Fix 2008/06/10
1469        To allow users specify locale specific files to globally readable files,        To allow users specify locale specific files to globally readable files,
1470        I relaxed checking in update_globally_readable_entry().        I relaxed checking in update_globally_readable_entry().
1471    
     @ Move ALLOW_ENFORCE_GRACE=enabled checking to write_answer().  
   
       To allow users use ccs-notifyd without turning ALLOW_ENFORCE_GRACE on,  
       I moved it from ccs_check_supervisor() to write_answer().  
   
1472  Fix 2008/06/11  Fix 2008/06/11
1473    
1474      @ Remove ALLOW_ENFORCE_GRACE parameter.      @ Remove ALLOW_ENFORCE_GRACE parameter.
# Line 1501  Fix 2008/06/22 Line 1496  Fix 2008/06/22
1496        which causes /proc/ccs/grant_log contain whitespace characters        which causes /proc/ccs/grant_log contain whitespace characters
1497        if execute handler's pathname contains whitespace characters.        if execute handler's pathname contains whitespace characters.
1498    
1499  Version 1.6.2 2008/??/??   Usability enhancement release.  Fix 2008/06/25
1500    
1501        @ Return 0 when ccs_may_umount() succeeds.
1502    
1503          I forgot to clear error value in ccs_may_umount() when the requested
1504          directory didn't match "deny_unmount" keyword. As a result, any umount()
1505          request with RESTRICT_UNMOUNT=enforcing returned -EPERM error.
1506    
1507    Version 1.6.2 2008/06/25   Usability enhancement release.
1508    
1509    Fix 2008/07/01
1510    
1511        @ Fix "Compilation failure" with 2.4.20 kernel.
1512    
1513          RedHat Linux 9's 2.4.20 kernel backported O(1) scheduler patch,
1514          resulting compilation error at ccs_load_policy().
1515          I added defined(TASK_DEAD) check.
1516    
1517    Fix 2008/07/08
1518    
1519        @ Don't check permissions if vfsmount is NULL.
1520    
1521          Some filesystems (e.g. unionfs) pass NULL vfsmount.
1522          I changed fs/tomoyo_file.c not to try to calculate pathnames
1523          if vfsmount is NULL.
1524    
1525    Version 1.6.3 2008/07/15   Bug fix release.
1526    
1527    Fix 2008/08/21
1528    
1529        @ Add workaround for gcc 4.3's bug.
1530    
1531          In some environments, fs/tomoyo_network.c could not be compiled
1532          because of gcc 4.3's bug.
1533          I modified save_ipv6_address() to use "integer literal" value
1534          instead for "static const u8" variable.
1535    
1536        @ Change prototypes of some functions.
1537    
1538          To support 2.6.27 kernels, I replaced "struct nameidata" with
1539          "struct path" for some functions.
1540    
1541        @ Detect distributor specific patches automatically.
1542    
1543          Since kernels with AppArmor patch applied is increasing,
1544          I introduced a mechanism which determines whether specific patches
1545          are applied or not, based on "#define" directives in the patches.
1546    
1547    Fix 2008/08/29
1548    
1549        @ Remove "-ccs" suffix from Makefile's EXTRAVERSION.
1550    
1551          To reduce conflicts on Makefile's EXTRAVERSION,
1552          I removed "-ccs" suffix from ccs-patch-2.\*.diff .
1553          Those who build kernels without using specs/build-\*.sh ,
1554          please edit EXTRAVERSION tag manually so that original kernels
1555          will not be overwritten by TOMOYO Linux kernels.
1556    
1557    Version 1.6.4 2008/09/03   Minor update release.
1558    
1559    Fix 2008/09/09
1560    
1561        @ Add "try again" response to "delayed enforcing" mode.
1562    
1563          To be able to handle pathname changes caused by software updates,
1564          "delayed enforcing" mode was introduced. It allows administrator to
1565          grant access requests which are about to be rejected by the kernel.
1566    
1567          To be able to handle pathname changes caused by software updates better,
1568          I introduced "try again" response. As "delayed enforcing" mode sleeps
1569          a process which violated policy, administrator can update policy while
1570          the process is sleeping. This "try again" response allows administrator
1571          to restart policy checks from the beginning after updating policy.
1572    
1573    Fix 2008/09/11
1574    
1575        @ Remember whether the process is allowed to write to /proc/ccs/ interface.
1576    
1577          Since programs for manipulating policy (e.g. ccs-queryd ) are installed
1578          in the form of RPM/DEB packages, these programs lose the original
1579          pathnames when they are updated by the package manager. The package
1580          manager renames these programs before deleting these programs so that
1581          the package manager can rollback the operation.
1582          This causes a problem when the programs are listed into /proc/ccs/manager
1583          using pathnames, as the programs will no longer be allowed to write to
1584          /proc/ccs/ interface while the process of old version of the program is
1585          alive.
1586    
1587          To solve this problem, I modified to remember the fact that the process
1588          is once allowed to write to /proc/ccs/ interface until the process
1589          attempts to execute a different program.
1590          This change makes it impossible to revoke permission to write to
1591          /proc/ccs/ interface without killing the process, but it will be better
1592          than nonfunctioning ccs-queryd program.
1593    
1594    Fix 2008/09/19
1595    
1596        @ Allow selecting a domain by PID.
1597    
1598          Sometimes we want to know what ACLs are given to specific PID, but
1599          finding a domainname for that PID from /proc/ccs/.process_status and
1600          reading ACLs from /proc/ccs/domain_policy by the domainname is very slow.
1601          Thus, I modified /proc/ccs/domain_policy to allow selecting a domain by
1602          PID. For example, to read domain ACL of current process from bash,
1603          run as follows.
1604    
1605          # exec 100<>/proc/ccs/domain_policy
1606          # echo select pid=$$ >&100
1607          # while read -u 100; do echo $REPLY; done
1608    
1609          If a domain is once selected by PID, reading /proc/ccs/domain_policy will
1610          print only that domain if that PID exists or print nothing otherwise.
1611    
1612        @ Disallow concurrent /proc/ccs/ access using the same file descriptor.
1613    
1614          Until now, one process can read() from /proc/ccs/ while other process
1615          that shares the file descriptor can write() to /proc/ccs/ .
1616          But to implement "Allow selecting a domain by PID" feature, I disabled
1617          concurrent read()/write() because the feature need to modify read buffer
1618          while writing.

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