Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * Copyright (C) 2017 Hari Bathini, IBM Corporation
7 */
8
9#ifndef __PERF_NAMESPACES_H
10#define __PERF_NAMESPACES_H
11
12#include "../perf.h"
13#include <linux/list.h>
14#include <linux/refcount.h>
15
16struct namespaces_event;
17
18struct namespaces {
19 struct list_head list;
20 u64 end_time;
21 struct perf_ns_link_info link_info[];
22};
23
24struct namespaces *namespaces__new(struct namespaces_event *event);
25void namespaces__free(struct namespaces *namespaces);
26
27struct nsinfo {
28 pid_t pid;
29 pid_t tgid;
30 pid_t nstgid;
31 bool need_setns;
32 char *mntns_path;
33 refcount_t refcnt;
34};
35
36struct nscookie {
37 int oldns;
38 int newns;
39};
40
41int nsinfo__init(struct nsinfo *nsi);
42struct nsinfo *nsinfo__new(pid_t pid);
43struct nsinfo *nsinfo__copy(struct nsinfo *nsi);
44void nsinfo__delete(struct nsinfo *nsi);
45
46struct nsinfo *nsinfo__get(struct nsinfo *nsi);
47void nsinfo__put(struct nsinfo *nsi);
48
49void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
50void nsinfo__mountns_exit(struct nscookie *nc);
51
52char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
53
54static inline void __nsinfo__zput(struct nsinfo **nsip)
55{
56 if (nsip) {
57 nsinfo__put(*nsip);
58 *nsip = NULL;
59 }
60}
61
62#define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
63
64#endif /* __PERF_NAMESPACES_H */