From: Kirill Tkhai <ktkhai@virtuozzo.com>
To: viro@zeniv.linux.org.uk, adobriyan@gmail.com,
davem@davemloft.net, ebiederm@xmission.com,
akpm@linux-foundation.org, christian.brauner@ubuntu.com,
areber@redhat.com, serge@hallyn.com,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
ktkhai@virtuozzo.com
Subject: [PATCH 20/23] ipc: Add ipc namespaces into ns_idr
Date: Thu, 30 Jul 2020 15:01:08 +0300 [thread overview]
Message-ID: <159611046802.535980.15486117399701470621.stgit@localhost.localdomain> (raw)
In-Reply-To: <159611007271.535980.15362304262237658692.stgit@localhost.localdomain>
Now they are exposed in /proc/namespace/ directory.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
---
ipc/namespace.c | 13 ++++++++++++-
ipc/shm.c | 1 +
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/ipc/namespace.c b/ipc/namespace.c
index 7bd0766ddc3b..ce6f87dd6d08 100644
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -63,8 +63,17 @@ static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns,
msg_init_ns(ns);
shm_init_ns(ns);
+ err = ns_idr_register(&ns->ns);
+ if (err)
+ goto fail_exit;
+
return ns;
+fail_exit:
+ mq_put_mnt(ns);
+ sem_exit_ns(ns);
+ msg_exit_ns(ns);
+ shm_exit_ns(ns);
fail_put:
put_user_ns(ns->user_ns);
ns_free_inum(&ns->ns);
@@ -117,6 +126,8 @@ void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids,
static void free_ipc_ns(struct ipc_namespace *ns)
{
+ ns_idr_unregister(&ns->ns);
+
/* mq_put_mnt() waits for a grace period as kern_unmount()
* uses synchronize_rcu().
*/
@@ -128,7 +139,7 @@ static void free_ipc_ns(struct ipc_namespace *ns)
dec_ipc_namespaces(ns->ucounts);
put_user_ns(ns->user_ns);
ns_free_inum(&ns->ns);
- kfree(ns);
+ kfree(ns); /* RCU grace period wait is done in mq_put_mnt */
}
static LLIST_HEAD(free_ipc_list);
diff --git a/ipc/shm.c b/ipc/shm.c
index 6cf24a5994ec..9e83556d9dcb 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -137,6 +137,7 @@ void shm_exit_ns(struct ipc_namespace *ns)
static int __init ipc_ns_init(void)
{
shm_init_ns(&init_ipc_ns);
+ WARN_ON(ns_idr_register(&init_ipc_ns.ns) < 0);
return 0;
}
next prev parent reply other threads:[~2020-07-30 12:01 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 11:59 [PATCH 00/23] proc: Introduce /proc/namespaces/ directory to expose namespaces lineary Kirill Tkhai
2020-07-30 11:59 ` [PATCH 01/23] ns: Add common refcount into ns_common add use it as counter for net_ns Kirill Tkhai
2020-07-30 13:35 ` Christian Brauner
2020-07-30 14:07 ` Kirill Tkhai
2020-07-30 15:59 ` Christian Brauner
2020-07-30 14:30 ` Christian Brauner
2020-07-30 14:34 ` Kirill Tkhai
2020-07-30 14:39 ` Christian Brauner
2020-07-30 11:59 ` [PATCH 02/23] uts: Use generic ns_common::count Kirill Tkhai
2020-07-30 14:30 ` Christian Brauner
2020-07-30 11:59 ` [PATCH 03/23] ipc: " Kirill Tkhai
2020-07-30 14:32 ` Christian Brauner
2020-07-30 11:59 ` [PATCH 04/23] pid: " Kirill Tkhai
2020-07-30 14:37 ` Christian Brauner
2020-07-30 11:59 ` [PATCH 05/23] user: " Kirill Tkhai
2020-07-30 14:46 ` Christian Brauner
2020-07-30 11:59 ` [PATCH 06/23] mnt: " Kirill Tkhai
2020-07-30 14:49 ` Christian Brauner
2020-07-30 11:59 ` [PATCH 07/23] cgroup: " Kirill Tkhai
2020-07-30 14:50 ` Christian Brauner
2020-07-30 12:00 ` [PATCH 08/23] time: " Kirill Tkhai
2020-07-30 14:52 ` Christian Brauner
2020-07-30 12:00 ` [PATCH 09/23] ns: Introduce ns_idr to be able to iterate all allocated namespaces in the system Kirill Tkhai
2020-07-30 12:23 ` Matthew Wilcox
2020-07-30 13:32 ` Kirill Tkhai
2020-07-30 13:56 ` Matthew Wilcox
2020-07-30 14:12 ` Kirill Tkhai
2020-07-30 14:15 ` Matthew Wilcox
2020-07-30 14:20 ` Kirill Tkhai
2020-07-30 12:00 ` [PATCH 10/23] fs: Rename fs/proc/namespaces.c into fs/proc/task_namespaces.c Kirill Tkhai
2020-07-30 12:00 ` [PATCH 11/23] fs: Add /proc/namespaces/ directory Kirill Tkhai
2020-07-30 12:18 ` Alexey Dobriyan
2020-07-30 13:22 ` Kirill Tkhai
2020-07-30 13:26 ` Christian Brauner
2020-07-30 14:30 ` Kirill Tkhai
2020-07-30 20:47 ` kernel test robot
2020-07-30 22:20 ` kernel test robot
2020-08-05 8:17 ` kernel test robot
2020-08-05 8:17 ` [RFC PATCH] fs: namespaces_dentry_operations can be static kernel test robot
2020-07-30 12:00 ` [PATCH 12/23] user: Free user_ns one RCU grace period after final counter put Kirill Tkhai
2020-07-30 12:00 ` [PATCH 13/23] user: Add user namespaces into ns_idr Kirill Tkhai
2020-07-30 12:00 ` [PATCH 14/23] net: Add net " Kirill Tkhai
2020-07-30 12:00 ` [PATCH 15/23] pid: Eextract child_reaper check from pidns_for_children_get() Kirill Tkhai
2020-07-30 12:00 ` [PATCH 16/23] proc_ns_operations: Add can_get method Kirill Tkhai
2020-07-30 12:00 ` [PATCH 17/23] pid: Add pid namespaces into ns_idr Kirill Tkhai
2020-07-30 12:00 ` [PATCH 18/23] uts: Free uts namespace one RCU grace period after final counter put Kirill Tkhai
2020-07-30 12:01 ` [PATCH 19/23] uts: Add uts namespaces into ns_idr Kirill Tkhai
2020-07-30 12:01 ` Kirill Tkhai [this message]
2020-07-30 12:01 ` [PATCH 21/23] mnt: Add mount " Kirill Tkhai
2020-07-30 12:01 ` [PATCH 22/23] cgroup: Add cgroup " Kirill Tkhai
2020-07-30 12:01 ` [PATCH 23/23] time: Add time " Kirill Tkhai
2020-07-30 13:08 ` [PATCH 00/23] proc: Introduce /proc/namespaces/ directory to expose namespaces lineary Christian Brauner
2020-07-30 13:38 ` Christian Brauner
2020-07-30 14:34 ` Eric W. Biederman
2020-07-30 14:42 ` Christian Brauner
2020-07-30 15:01 ` Kirill Tkhai
2020-07-30 22:13 ` Eric W. Biederman
2020-07-31 8:48 ` Pavel Tikhomirov
2020-08-03 10:03 ` Kirill Tkhai
2020-08-03 10:51 ` Alexey Dobriyan
2020-08-06 8:05 ` Andrei Vagin
2020-08-07 8:47 ` Kirill Tkhai
2020-08-10 17:34 ` Andrei Vagin
2020-08-11 10:23 ` Kirill Tkhai
2020-08-12 17:53 ` Andrei Vagin
2020-08-13 8:12 ` Kirill Tkhai
2020-08-14 1:16 ` Andrei Vagin
2020-08-14 15:11 ` Kirill Tkhai
2020-08-14 19:21 ` Andrei Vagin
2020-08-17 14:05 ` Kirill Tkhai
2020-08-17 15:48 ` Eric W. Biederman
2020-08-17 17:47 ` Christian Brauner
2020-08-17 18:53 ` Eric W. Biederman
2020-08-04 5:43 ` Andrei Vagin
2020-08-04 12:11 ` Pavel Tikhomirov
2020-08-04 14:47 ` Kirill Tkhai
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=159611046802.535980.15486117399701470621.stgit@localhost.localdomain \
--to=ktkhai@virtuozzo.com \
--cc=adobriyan@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=areber@redhat.com \
--cc=christian.brauner@ubuntu.com \
--cc=davem@davemloft.net \
--cc=ebiederm@xmission.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=serge@hallyn.com \
--cc=viro@zeniv.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).