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| author | Cyrill Gorcunov <gorcunov@openvz.org> | 2012-05-31 16:26:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-31 17:49:32 -0700 |
| commit | fe8c7f5cbf91124987106faa3bdf0c8b955c4cf7 (patch) | |
| tree | 3ddb0013465d7cd09ef6bc2fab18cb59055a309b /include/linux | |
| parent | 5b172087f99189416d5f47fd7ab5e6fb762a9ba3 (diff) | |
| download | linux-stable-fe8c7f5cbf91124987106faa3bdf0c8b955c4cf7.tar.gz linux-stable-fe8c7f5cbf91124987106faa3bdf0c8b955c4cf7.tar.bz2 linux-stable-fe8c7f5cbf91124987106faa3bdf0c8b955c4cf7.zip | |
c/r: prctl: extend PR_SET_MM to set up more mm_struct entries
During checkpoint we dump whole process memory to a file and the dump
includes process stack memory. But among stack data itself, the stack
carries additional parameters such as command line arguments, environment
data and auxiliary vector.
So when we do restore procedure and once we've restored stack data itself
we need to setup mm_struct::arg_start/end, env_start/end, so restored
process would be able to find command line arguments and environment data
it had at checkpoint time. The same applies to auxiliary vector.
For this reason additional PR_SET_MM_(ARG_START | ARG_END | ENV_START |
ENV_END | AUXV) codes are introduced.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Vagin <avagin@openvz.org>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Vasiliy Kulikov <segoon@openwall.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/prctl.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/prctl.h b/include/linux/prctl.h index 78b76e24cc7e..18d84c4b42d8 100644 --- a/include/linux/prctl.h +++ b/include/linux/prctl.h @@ -113,6 +113,11 @@ # define PR_SET_MM_START_STACK 5 # define PR_SET_MM_START_BRK 6 # define PR_SET_MM_BRK 7 +# define PR_SET_MM_ARG_START 8 +# define PR_SET_MM_ARG_END 9 +# define PR_SET_MM_ENV_START 10 +# define PR_SET_MM_ENV_END 11 +# define PR_SET_MM_AUXV 12 /* * Set specific pid that is allowed to ptrace the current task. |