25cbe53ef1
task_child_reaper() has no callers anymore, kill it. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
91 lines
1.8 KiB
C
91 lines
1.8 KiB
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/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 bsd_acct_struct;
|
|
|
|
struct pid_namespace {
|
|
struct kref kref;
|
|
struct pidmap pidmap[PIDMAP_ENTRIES];
|
|
int last_pid;
|
|
struct task_struct *child_reaper;
|
|
struct kmem_cache *pid_cachep;
|
|
unsigned int level;
|
|
struct pid_namespace *parent;
|
|
#ifdef CONFIG_PROC_FS
|
|
struct vfsmount *proc_mnt;
|
|
#endif
|
|
#ifdef CONFIG_BSD_PROCESS_ACCT
|
|
struct bsd_acct_struct *bacct;
|
|
#endif
|
|
};
|
|
|
|
extern struct pid_namespace init_pid_ns;
|
|
|
|
#ifdef CONFIG_PID_NS
|
|
static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
|
|
{
|
|
if (ns != &init_pid_ns)
|
|
kref_get(&ns->kref);
|
|
return ns;
|
|
}
|
|
|
|
extern struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *ns);
|
|
extern void free_pid_ns(struct kref *kref);
|
|
extern void zap_pid_ns_processes(struct pid_namespace *pid_ns);
|
|
|
|
static inline void put_pid_ns(struct pid_namespace *ns)
|
|
{
|
|
if (ns != &init_pid_ns)
|
|
kref_put(&ns->kref, free_pid_ns);
|
|
}
|
|
|
|
#else /* !CONFIG_PID_NS */
|
|
#include <linux/err.h>
|
|
|
|
static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
|
|
{
|
|
return ns;
|
|
}
|
|
|
|
static inline struct pid_namespace *
|
|
copy_pid_ns(unsigned long flags, struct pid_namespace *ns)
|
|
{
|
|
if (flags & CLONE_NEWPID)
|
|
ns = ERR_PTR(-EINVAL);
|
|
return ns;
|
|
}
|
|
|
|
static inline void put_pid_ns(struct pid_namespace *ns)
|
|
{
|
|
}
|
|
|
|
|
|
static inline void zap_pid_ns_processes(struct pid_namespace *ns)
|
|
{
|
|
BUG();
|
|
}
|
|
#endif /* CONFIG_PID_NS */
|
|
|
|
static inline struct pid_namespace *task_active_pid_ns(struct task_struct *tsk)
|
|
{
|
|
return tsk->nsproxy->pid_ns;
|
|
}
|
|
|
|
void pidhash_init(void);
|
|
void pidmap_init(void);
|
|
|
|
#endif /* _LINUX_PID_NS_H */
|