Quoting Stéphane Graber ([email protected]): > This adds 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). > > Reported-by: Hans Feldt <[email protected]> > Cc: Alexander Viro <[email protected]> > Cc: Eric W. Biederman <[email protected]> > Cc: Serge Hallyn <[email protected]>
Thanks, Stéphane. Acked-by: Serge E. Hallyn <[email protected]> > Signed-off-by: Stéphane Graber <[email protected]> > --- > Documentation/sysctl/kernel.txt | 1 + > fs/coredump.c | 5 +++++ > 2 files changed, 6 insertions(+) > > diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt > index ccd4258..833026d 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 > diff --git a/fs/coredump.c b/fs/coredump.c > index c647965..528c6fc 100644 > --- a/fs/coredump.c > +++ b/fs/coredump.c > @@ -186,6 +186,11 @@ 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); > -- > 1.8.1.2 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
