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authorStéphane 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 /fs/coredump.c
parent73af963f9f3036dffed55c3a2898598186db1045 (diff)
downloadlwn-65aafb1e7484b7434a0c1d4c593191ebe5776a2f.tar.gz
lwn-65aafb1e7484b7434a0c1d4c593191ebe5776a2f.zip
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: Stéphane 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 'fs/coredump.c')
-rw-r--r--fs/coredump.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/coredump.c b/fs/coredump.c
index 72f816d6cad9..9bdeca12ae0e 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -190,6 +190,11 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
err = cn_printf(cn, "%d",
task_tgid_vnr(current));
break;
+ /* global pid */
+ case 'P':
+ err = cn_printf(cn, "%d",
+ task_tgid_nr(current));
+ break;
/* uid */
case 'u':
err = cn_printf(cn, "%d", cred->uid);