pid-sandbox: execute pid-ns-init as pid 1 (bug 675312)
Execute pid-ns-init as the first fork after unshare, as
required for it to have pid 1 and become the default reaper
of orphaned descendant processes. In _exec, exec a separate
pid-ns-init process to behave as a supervisor which will
forward signals to init and forward exit status to the parent
process.
Fixes: a75d5546e3a4 ("Introduce a tiny init replacement for inside pid namespace")
Bug: https://bugs.gentoo.org/675312
Reviewed-by: Brian Dolbec <dolsen@gentoo.org>
Signed-off-by: Zac Medico <zmedico@gentoo.org>
2 files changed
