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(parent: 4a3eb72) | patch
pid: get pid_t ppid of task in init_pid_ns
authorRichard Guy Briggs <rgb@redhat.com>
Thu, 15 Aug 2013 22:05:12 +0000 (18:05 -0400)
committerEric Paris <eparis@redhat.com>
Thu, 20 Mar 2014 14:11:54 +0000 (10:11 -0400)
commitad36d28293936b03d6b7996e9d6aadfd73c0eb08
tree695d01a5792f57356ed7c1b759ff781dabda5c22tree | snapshot (tar.gz zip)
parent4a3eb726d1543c4b616b9a0a4d4c53ddd276f5f4commit | diff
pid: get pid_t ppid of task in init_pid_ns

Added the functions task_ppid_nr_ns() and task_ppid_nr() to abstract the lookup
of the PPID (real_parent's pid_t) of a process, including rcu locking, in the
arbitrary and init_pid_ns.
This provides an alternative to sys_getppid(), which is relative to the child
process' pid namespace.

(informed by ebiederman's 6c621b7e)
Cc: stable@vger.kernel.org
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
include/linux/sched.h diff | blob | blame | history