Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright (C) 2017 Hari Bathini, IBM Corporation
5 */
6
7#ifndef __PERF_NAMESPACES_H
8#define __PERF_NAMESPACES_H
9
10#include <sys/types.h>
11#include <linux/stddef.h>
12#include <linux/perf_event.h>
13#include <linux/refcount.h>
14#include <linux/types.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 char *oldcwd;
40};
41
42int nsinfo__init(struct nsinfo *nsi);
43struct nsinfo *nsinfo__new(pid_t pid);
44struct nsinfo *nsinfo__copy(struct nsinfo *nsi);
45void nsinfo__delete(struct nsinfo *nsi);
46
47struct nsinfo *nsinfo__get(struct nsinfo *nsi);
48void nsinfo__put(struct nsinfo *nsi);
49
50void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
51void nsinfo__mountns_exit(struct nscookie *nc);
52
53char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
54
55static inline void __nsinfo__zput(struct nsinfo **nsip)
56{
57 if (nsip) {
58 nsinfo__put(*nsip);
59 *nsip = NULL;
60 }
61}
62
63#define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
64
65#endif /* __PERF_NAMESPACES_H */