From: Andrei Vagin <avagin@openvz.org>
To: David Howells <dhowells@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, Andrei Vagin <avagin@openvz.org>,
Andrei Vagin <avagin@gmail.com>
Subject: [PATCH dhowells/mount-api] proc: set a proper user namespace for fs_context
Date: Thu, 16 Aug 2018 00:34:07 -0700 [thread overview]
Message-ID: <20180816073407.12567-1-avagin@openvz.org> (raw)
A user namespace should be taken from a pidns for which a procfs is created.
Signed-off-by: Andrei Vagin <avagin@gmail.com>
---
fs/proc/root.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 1d6e5bfa30cc..1419b48a89ab 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -315,6 +315,11 @@ int pid_ns_prepare_proc(struct pid_namespace *ns)
if (IS_ERR(fc))
return PTR_ERR(fc);
+ if (fc->user_ns != ns->user_ns) {
+ put_user_ns(fc->user_ns);
+ fc->user_ns = get_user_ns(ns->user_ns);
+ }
+
ctx = fc->fs_private;
if (ctx->pid_ns != ns) {
put_pid_ns(ctx->pid_ns);
--
2.17.1
next reply other threads:[~2018-08-16 10:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-16 7:34 Andrei Vagin [this message]
2018-08-16 22:16 ` [PATCH dhowells/mount-api] proc: set a proper user namespace for fs_context Andrei Vagin
2018-08-21 7:33 ` David Howells
2018-08-21 7:39 ` David Howells
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