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/perf_event.h>
14#include <linux/refcount.h>
15#include <linux/types.h>
 
16
17struct namespaces_event;
 
 
 
 
18
19struct namespaces {
20	struct list_head list;
21	u64 end_time;
22	struct perf_ns_link_info link_info[];
23};
24
25struct namespaces *namespaces__new(struct namespaces_event *event);
26void namespaces__free(struct namespaces *namespaces);
27
28struct nsinfo {
29	pid_t			pid;
30	pid_t			tgid;
31	pid_t			nstgid;
32	bool			need_setns;
 
33	char			*mntns_path;
34	refcount_t		refcnt;
35};
36
37struct nscookie {
38	int			oldns;
39	int			newns;
 
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 */

 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 <sys/stat.h>
12#include <linux/stddef.h>
13#include <linux/perf_event.h>
14#include <linux/refcount.h>
15#include <linux/types.h>
16#include <internal/rc_check.h>
17
18#ifndef HAVE_SETNS_SUPPORT
19int setns(int fd, int nstype);
20#endif
21
22struct perf_record_namespaces;
23
24struct namespaces {
25	struct list_head list;
26	u64 end_time;
27	struct perf_ns_link_info link_info[];
28};
29
30struct namespaces *namespaces__new(struct perf_record_namespaces *event);
31void namespaces__free(struct namespaces *namespaces);
32
33DECLARE_RC_STRUCT(nsinfo) {
34	pid_t			pid;
35	pid_t			tgid;
36	pid_t			nstgid;
37	bool			need_setns;
38	bool			in_pidns;
39	char			*mntns_path;
40	refcount_t		refcnt;
41};
42
43struct nscookie {
44	int			oldns;
45	int			newns;
46	char			*oldcwd;
47};
48
49int nsinfo__init(struct nsinfo *nsi);
50struct nsinfo *nsinfo__new(pid_t pid);
51struct nsinfo *nsinfo__copy(const struct nsinfo *nsi);
 
52
53struct nsinfo *nsinfo__get(struct nsinfo *nsi);
54void nsinfo__put(struct nsinfo *nsi);
55
56bool nsinfo__need_setns(const struct nsinfo *nsi);
57void nsinfo__clear_need_setns(struct nsinfo *nsi);
58pid_t nsinfo__tgid(const struct nsinfo  *nsi);
59pid_t nsinfo__nstgid(const struct nsinfo  *nsi);
60pid_t nsinfo__pid(const struct nsinfo  *nsi);
61pid_t nsinfo__in_pidns(const struct nsinfo  *nsi);
62
63void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
64void nsinfo__mountns_exit(struct nscookie *nc);
65
66char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
67int nsinfo__stat(const char *filename, struct stat *st, struct nsinfo *nsi);
68
69bool nsinfo__is_in_root_namespace(void);
70
71static inline void __nsinfo__zput(struct nsinfo **nsip)
72{
73	if (nsip) {
74		nsinfo__put(*nsip);
75		*nsip = NULL;
76	}
77}
78
79#define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
80
81const char *perf_ns__name(unsigned int id);
82
83#endif  /* __PERF_NAMESPACES_H */