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    Subject[PATCH 19/23] uts: Add uts namespaces into ns_idr
    From
    Date
    Now they are exposed in /proc/namespace/ directory.

    Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
    ---
    kernel/utsname.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    diff --git a/kernel/utsname.c b/kernel/utsname.c
    index aebf4df5f592..883855ca16cd 100644
    --- a/kernel/utsname.c
    +++ b/kernel/utsname.c
    @@ -70,8 +70,16 @@ static struct uts_namespace *clone_uts_ns(struct user_namespace *user_ns,
    memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
    ns->user_ns = get_user_ns(user_ns);
    up_read(&uts_sem);
    +
    + err = ns_idr_register(&ns->ns);
    + if (err)
    + goto fail_put;
    +
    return ns;

    +fail_put:
    + put_user_ns(user_ns);
    + ns_free_inum(&ns->ns);
    fail_free:
    kmem_cache_free(uts_ns_cache, ns);
    fail_dec:
    @@ -113,6 +121,7 @@ static void free_uts_ns_rcu(struct rcu_head *head)

    void free_uts_ns(struct uts_namespace *ns)
    {
    + ns_idr_unregister(&ns->ns);
    dec_uts_namespaces(ns->ucounts);
    put_user_ns(ns->user_ns);
    ns_free_inum(&ns->ns);
    @@ -182,4 +191,5 @@ void __init uts_ns_init(void)
    offsetof(struct uts_namespace, name),
    sizeof_field(struct uts_namespace, name),
    NULL);
    + WARN_ON(ns_idr_register(&init_uts_ns.ns) < 0);
    }

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