72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_TIMENS_H
|
|
#define _LINUX_TIMENS_H
|
|
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/nsproxy.h>
|
|
#include <linux/ns_common.h>
|
|
#include <linux/err.h>
|
|
|
|
struct user_namespace;
|
|
extern struct user_namespace init_user_ns;
|
|
|
|
struct time_namespace {
|
|
struct kref kref;
|
|
struct user_namespace *user_ns;
|
|
struct ucounts *ucounts;
|
|
struct ns_common ns;
|
|
} __randomize_layout;
|
|
|
|
extern struct time_namespace init_time_ns;
|
|
|
|
#ifdef CONFIG_TIME_NS
|
|
static inline struct time_namespace *get_time_ns(struct time_namespace *ns)
|
|
{
|
|
kref_get(&ns->kref);
|
|
return ns;
|
|
}
|
|
|
|
struct time_namespace *copy_time_ns(unsigned long flags,
|
|
struct user_namespace *user_ns,
|
|
struct time_namespace *old_ns);
|
|
void free_time_ns(struct kref *kref);
|
|
int timens_on_fork(struct nsproxy *nsproxy, struct task_struct *tsk);
|
|
|
|
static inline void put_time_ns(struct time_namespace *ns)
|
|
{
|
|
kref_put(&ns->kref, free_time_ns);
|
|
}
|
|
|
|
#else
|
|
static inline struct time_namespace *get_time_ns(struct time_namespace *ns)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void put_time_ns(struct time_namespace *ns)
|
|
{
|
|
}
|
|
|
|
static inline
|
|
struct time_namespace *copy_time_ns(unsigned long flags,
|
|
struct user_namespace *user_ns,
|
|
struct time_namespace *old_ns)
|
|
{
|
|
if (flags & CLONE_NEWTIME)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
return old_ns;
|
|
}
|
|
|
|
static inline int timens_on_fork(struct nsproxy *nsproxy,
|
|
struct task_struct *tsk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* _LINUX_TIMENS_H */
|