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| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-07-26 04:02:49 -0700 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-11-20 04:17:43 -0800 |
| commit | bcf58e725ddc45d31addbc6627d4f0edccc824c1 (patch) | |
| tree | e6dff2fbed40f26d8c45f78e23a7476527573bf1 /ipc | |
| parent | 142e1d1d5f088e7a38659daca6e84a730967774a (diff) | |
| download | lwn-bcf58e725ddc45d31addbc6627d4f0edccc824c1.tar.gz lwn-bcf58e725ddc45d31addbc6627d4f0edccc824c1.zip | |
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.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/ipc/namespace.c b/ipc/namespace.c index 6ed33c05cb66..72c868277793 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); } /* |