path: root/Documentation/sysctl
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authorSt├ęphane Graber <stgraber@ubuntu.com>2013-09-11 14:24:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:59:01 -0700
commit65aafb1e7484b7434a0c1d4c593191ebe5776a2f (patch)
tree163b908974a487e6e8bdfd893d20fb28234255d2 /Documentation/sysctl
parent73af963f9f3036dffed55c3a2898598186db1045 (diff)
coredump: add new %P variable in core_pattern
Add a new %P variable to be used in core_pattern. This variable contains the global PID (PID in the init namespace) as %p contains the PID in the current namespace which isn't always what we want. The main use for this is to make it easier to handle crashes that happened within a container. With that new variables it's possible to have the crashes dumped into the container or forwarded to the host with the right PID (from the host's point of view). Signed-off-by: St├ęphane Graber <stgraber@ubuntu.com> Reported-by: Hans Feldt <hans.feldt@ericsson.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Andy Whitcroft <apw@canonical.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/sysctl')
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index ab7d16efa96b..9d4c1d18ad44 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -182,6 +182,7 @@ core_pattern is used to specify a core dumpfile pattern name.
%<NUL> '%' is dropped
%% output one '%'
%p pid
+ %P global pid (init PID namespace)
%u uid
%g gid
%d dump mode, matches PR_SET_DUMPABLE and