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authorEric W. Biederman <ebiederm@xmission.com>2012-07-26 04:02:49 -0700
committerEric W. Biederman <ebiederm@xmission.com>2012-11-20 04:17:43 -0800
commitbcf58e725ddc45d31addbc6627d4f0edccc824c1 (patch)
treee6dff2fbed40f26d8c45f78e23a7476527573bf1 /ipc
parent142e1d1d5f088e7a38659daca6e84a730967774a (diff)
downloadlinux-bcf58e725ddc45d31addbc6627d4f0edccc824c1.tar.gz
userns: Make create_new_namespaces take a user_ns parameter
Modify create_new_namespaces to explicitly take a user namespace parameter, instead of implicitly through the task_struct. This allows an implementation of unshare(CLONE_NEWUSER) where the new user namespace is not stored onto the current task_struct until after all of the namespaces are created. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/namespace.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/ipc/namespace.c b/ipc/namespace.c
index 6ed33c05cb6..72c86827779 100644
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -16,7 +16,7 @@
#include "util.h"
-static struct ipc_namespace *create_ipc_ns(struct task_struct *tsk,
+static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns,
struct ipc_namespace *old_ns)
{
struct ipc_namespace *ns;
@@ -46,19 +46,17 @@ static struct ipc_namespace *create_ipc_ns(struct task_struct *tsk,
ipcns_notify(IPCNS_CREATED);
register_ipcns_notifier(ns);
- ns->user_ns = get_user_ns(task_cred_xxx(tsk, user_ns));
+ ns->user_ns = get_user_ns(user_ns);
return ns;
}
struct ipc_namespace *copy_ipcs(unsigned long flags,
- struct task_struct *tsk)
+ struct user_namespace *user_ns, struct ipc_namespace *ns)
{
- struct ipc_namespace *ns = tsk->nsproxy->ipc_ns;
-
if (!(flags & CLONE_NEWIPC))
return get_ipc_ns(ns);
- return create_ipc_ns(tsk, ns);
+ return create_ipc_ns(user_ns, ns);
}
/*