1 #ifndef _LINUX_NSPROXY_H
2 #define _LINUX_NSPROXY_H
4 #include <linux/spinlock.h>
5 #include <linux/sched.h>
12 * A structure to contain pointers to all per-process
13 * namespaces - fs (mount), uts, network, sysvipc, etc.
15 * 'count' is the number of tasks holding a reference.
16 * The count for each namespace, then, will be the number
17 * of nsproxies pointing to it, not the number of tasks.
19 * The nsproxy is shared by tasks which share all namespaces.
20 * As soon as a single namespace is cloned or unshared, the
27 struct uts_namespace *uts_ns;
28 struct ipc_namespace *ipc_ns;
29 struct mnt_namespace *mnt_ns;
31 extern struct nsproxy init_nsproxy;
33 struct nsproxy *dup_namespaces(struct nsproxy *orig);
34 int copy_namespaces(int flags, struct task_struct *tsk);
35 void get_task_namespaces(struct task_struct *tsk);
36 void free_nsproxy(struct nsproxy *ns);
38 static inline void put_nsproxy(struct nsproxy *ns)
40 if (atomic_dec_and_test(&ns->count)) {
45 static inline void exit_task_namespaces(struct task_struct *p)
47 struct nsproxy *ns = p->nsproxy;