46 lines
953 B
C
46 lines
953 B
C
#ifndef _LINUX_PID_NS_H
|
|
#define _LINUX_PID_NS_H
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/threads.h>
|
|
#include <linux/pid.h>
|
|
#include <linux/nsproxy.h>
|
|
#include <linux/kref.h>
|
|
|
|
struct pidmap {
|
|
atomic_t nr_free;
|
|
void *page;
|
|
};
|
|
|
|
#define PIDMAP_ENTRIES ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8)
|
|
|
|
struct pid_namespace {
|
|
struct kref kref;
|
|
struct pidmap pidmap[PIDMAP_ENTRIES];
|
|
int last_pid;
|
|
struct task_struct *child_reaper;
|
|
};
|
|
|
|
extern struct pid_namespace init_pid_ns;
|
|
|
|
static inline void get_pid_ns(struct pid_namespace *ns)
|
|
{
|
|
kref_get(&ns->kref);
|
|
}
|
|
|
|
extern int copy_pid_ns(int flags, struct task_struct *tsk);
|
|
extern void free_pid_ns(struct kref *kref);
|
|
|
|
static inline void put_pid_ns(struct pid_namespace *ns)
|
|
{
|
|
kref_put(&ns->kref, free_pid_ns);
|
|
}
|
|
|
|
static inline struct task_struct *child_reaper(struct task_struct *tsk)
|
|
{
|
|
return tsk->nsproxy->pid_ns->child_reaper;
|
|
}
|
|
|
|
#endif /* _LINUX_PID_NS_H */
|