1. 02 Aug, 2010 1 commit
  2. 16 May, 2010 1 commit
  3. 10 May, 2010 1 commit
  4. 06 May, 2010 1 commit
  5. 05 May, 2010 1 commit
  6. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      The script does the followings.
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
      The conversion was done in the following steps.
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
      6. percpu.h was updated not to include slab.h.
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
  7. 17 Feb, 2010 1 commit
  8. 16 Feb, 2010 2 commits
  9. 14 Feb, 2010 3 commits
  10. 11 Feb, 2010 1 commit
  11. 08 Feb, 2010 1 commit
  12. 26 Jan, 2010 1 commit
  13. 10 Jan, 2010 2 commits
  14. 22 Dec, 2009 1 commit
  15. 15 Dec, 2009 1 commit
  16. 08 Dec, 2009 1 commit
  17. 20 Nov, 2009 1 commit
  18. 08 Jun, 2009 1 commit
  19. 04 Jun, 2009 1 commit
  20. 02 Jun, 2009 2 commits
  21. 13 Apr, 2009 1 commit
  22. 12 Feb, 2009 1 commit
    • Kentaro Takeda's avatar
      File operation restriction part. · b69a54ee
      Kentaro Takeda authored
      This file controls file related operations of TOMOYO Linux.
      tomoyo/tomoyo.c calls the following six functions in this file.
      Each function handles the following access types.
       * tomoyo_check_file_perm
      sysctl()'s "read" and "write".
       * tomoyo_check_exec_perm
       * tomoyo_check_open_permission
      open(2) for "read" and "write".
       * tomoyo_check_1path_perm
      "create", "unlink", "mkdir", "rmdir", "mkfifo",
      "mksock", "mkblock", "mkchar", "truncate" and "symlink".
       * tomoyo_check_2path_perm
      "rename" and "unlink".
       * tomoyo_check_rewrite_permission
      ("rewrite" are operations which may lose already recorded data of a file,
      i.e. open(!O_APPEND) || open(O_TRUNC) || truncate() || ftruncate())
      The functions which actually checks ACLs are the following three functions.
      Each function handles the following access types.
      ACL directive is expressed by "allow_<access type>".
       * tomoyo_check_file_acl
      Open() operation and execve() operation.
      ("read", "write", "read/write" and "execute")
       * tomoyo_check_single_write_acl
      Directory modification operations with 1 pathname.
      ("create", "unlink", "mkdir", "rmdir", "mkfifo", "mksock",
       "mkblock", "mkchar", "truncate", "symlink" and "rewrite")
       * tomoyo_check_double_write_acl
      Directory modification operations with 2 pathname.
      ("link" and "rename")
      Also, this file contains handlers of some utility directives
      for file related operations.
       * "allow_read":   specifies globally (for all domains) readable files.
       * "path_group":   specifies pathname macro.
       * "deny_rewrite": restricts rewrite operation.
      Signed-off-by: default avatarKentaro Takeda <takedakn@nttdata.co.jp>
      Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
      Signed-off-by: default avatarToshiharu Harada <haradats@nttdata.co.jp>
      Signed-off-by: default avatarJames Morris <jmorris@namei.org>