The patch titled
Subject: /proc/PID/status: show all sets of pid according to ns
has been added to the -mm tree. Its filename is
proc-pid-status-show-all-sets-of-pid-according-to-ns.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/proc-pid-status-show-all-sets-of-pid-according-to-ns.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/proc-pid-status-show-all-sets-of-pid-according-to-ns.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>
Subject: /proc/PID/status: show all sets of pid according to ns
If some issues occurred inside a container guest, host user could not know
which process is in trouble just by guest pid: the users of container
guest only knew the pid inside containers. This will bring obstacle for
trouble shooting.
This patch adds four fields: NStgid, NSpid, NSpgid and NSsid:
a) In init_pid_ns, nothing changed;
b) In one pidns, will tell the pid inside containers:
NStgid: 21776 5 1
NSpid: 21776 5 1
NSpgid: 21776 5 1
NSsid: 21729 1 0
** Process id is 21776 in level 0, 5 in level 1, 1 in level 2.
c) If pidns is nested, it depends on which pidns are you in.
NStgid: 5 1
NSpid: 5 1
NSpgid: 5 1
NSsid: 1 0
** Views from level 1
Signed-off-by: Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>
Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Acked-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Tested-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Tested-by: Nathan Scott <nathans@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/array.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff -puN fs/proc/array.c~proc-pid-status-show-all-sets-of-pid-according-to-ns fs/proc/array.c
--- a/fs/proc/array.c~proc-pid-status-show-all-sets-of-pid-according-to-ns
+++ a/fs/proc/array.c
@@ -188,6 +188,22 @@ static inline void task_state(struct seq
from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
put_cred(cred);
+ seq_puts(m, "\nNStgid:");
+ for (g = ns->level; g <= pid->level; g++)
+ seq_printf(m, "\t%d",
+ task_tgid_nr_ns(p, pid->numbers[g].ns));
+ seq_puts(m, "\nNSpid:");
+ for (g = ns->level; g <= pid->level; g++)
+ seq_printf(m, "\t%d",
+ task_pid_nr_ns(p, pid->numbers[g].ns));
+ seq_puts(m, "\nNSpgid:");
+ for (g = ns->level; g <= pid->level; g++)
+ seq_printf(m, "\t%d",
+ task_pgrp_nr_ns(p, pid->numbers[g].ns));
+ seq_puts(m, "\nNSsid:");
+ for (g = ns->level; g <= pid->level; g++)
+ seq_printf(m, "\t%d",
+ task_session_nr_ns(p, pid->numbers[g].ns));
seq_putc(m, '\n');
}
_
Patches currently in -mm which might be from chenhanxiao@xxxxxxxxxxxxxx are
proc-pid-status-show-all-sets-of-pid-according-to-ns.patch
docs-add-missing-and-new-proc-pid-status-file-entries-fix-typos.patch
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