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 <sys/types.h>
13#include <linux/stddef.h>
14#include <linux/perf_event.h>
15#include <linux/refcount.h>
16#include <linux/types.h>
17
18struct namespaces_event;
19
20struct namespaces {
21 struct list_head list;
22 u64 end_time;
23 struct perf_ns_link_info link_info[];
24};
25
26struct namespaces *namespaces__new(struct namespaces_event *event);
27void namespaces__free(struct namespaces *namespaces);
28
29struct nsinfo {
30 pid_t pid;
31 pid_t tgid;
32 pid_t nstgid;
33 bool need_setns;
34 char *mntns_path;
35 refcount_t refcnt;
36};
37
38struct nscookie {
39 int oldns;
40 int newns;
41 char *oldcwd;
42};
43
44int nsinfo__init(struct nsinfo *nsi);
45struct nsinfo *nsinfo__new(pid_t pid);
46struct nsinfo *nsinfo__copy(struct nsinfo *nsi);
47void nsinfo__delete(struct nsinfo *nsi);
48
49struct nsinfo *nsinfo__get(struct nsinfo *nsi);
50void nsinfo__put(struct nsinfo *nsi);
51
52void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
53void nsinfo__mountns_exit(struct nscookie *nc);
54
55char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
56
57static inline void __nsinfo__zput(struct nsinfo **nsip)
58{
59 if (nsip) {
60 nsinfo__put(*nsip);
61 *nsip = NULL;
62 }
63}
64
65#define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
66
67#endif /* __PERF_NAMESPACES_H */