diff options
Diffstat (limited to 'kernel/nsproxy.c')
| -rw-r--r-- | kernel/nsproxy.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c index a3612f82f187..e10385c17f73 100644 --- a/kernel/nsproxy.c +++ b/kernel/nsproxy.c @@ -13,6 +13,7 @@ #include <linux/version.h> #include <linux/nsproxy.h> #include <linux/init_task.h> +#include <linux/namespace.h> struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy); @@ -55,6 +56,11 @@ struct nsproxy *dup_namespaces(struct nsproxy *orig) { struct nsproxy *ns = clone_namespaces(orig); + if (ns) { + if (ns->namespace) + get_namespace(ns->namespace); + } + return ns; } @@ -65,16 +71,40 @@ struct nsproxy *dup_namespaces(struct nsproxy *orig) int copy_namespaces(int flags, struct task_struct *tsk) { struct nsproxy *old_ns = tsk->nsproxy; + struct nsproxy *new_ns; + int err = 0; if (!old_ns) return 0; get_nsproxy(old_ns); - return 0; + if (!(flags & CLONE_NEWNS)) + return 0; + + new_ns = clone_namespaces(old_ns); + if (!new_ns) { + err = -ENOMEM; + goto out; + } + + tsk->nsproxy = new_ns; + + err = copy_namespace(flags, tsk); + if (err) { + tsk->nsproxy = old_ns; + put_nsproxy(new_ns); + goto out; + } + +out: + put_nsproxy(old_ns); + return err; } void free_nsproxy(struct nsproxy *ns) { + if (ns->namespace) + put_namespace(ns->namespace); kfree(ns); } |