Linux Perf
namespaces.h
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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 
17 struct namespaces_event;
18 
19 struct namespaces {
20  struct list_head list;
21  u64 end_time;
22  struct perf_ns_link_info link_info[];
23 };
24 
27 
28 struct 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 
37 struct nscookie {
38  int oldns;
39  int newns;
40 };
41 
42 int nsinfo__init(struct nsinfo *nsi);
43 struct nsinfo *nsinfo__new(pid_t pid);
44 struct nsinfo *nsinfo__copy(struct nsinfo *nsi);
45 void nsinfo__delete(struct nsinfo *nsi);
46 
47 struct nsinfo *nsinfo__get(struct nsinfo *nsi);
48 void nsinfo__put(struct nsinfo *nsi);
49 
50 void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
51 void nsinfo__mountns_exit(struct nscookie *nc);
52 
53 char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
54 
55 static 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 */
struct nsinfo * nsinfo__get(struct nsinfo *nsi)
Definition: namespaces.c:167
struct perf_ns_link_info link_info[]
Definition: namespaces.h:22
void nsinfo__put(struct nsinfo *nsi)
Definition: namespaces.c:174
struct list_head list
Definition: namespaces.h:20
struct nsinfo * nsinfo__copy(struct nsinfo *nsi)
Definition: namespaces.c:138
struct namespaces * namespaces__new(struct namespaces_event *event)
Definition: namespaces.c:22
static void __nsinfo__zput(struct nsinfo **nsip)
Definition: namespaces.h:55
struct nsinfo * nsi
Definition: builtin-probe.c:61
void namespaces__free(struct namespaces *namespaces)
Definition: namespaces.c:40
char * nsinfo__realpath(const char *path, struct nsinfo *nsi)
Definition: namespaces.c:239
int nsinfo__init(struct nsinfo *nsi)
Definition: namespaces.c:45
int oldns
Definition: namespaces.h:38
#define event
char * mntns_path
Definition: namespaces.h:33
u32 pid
Definition: hists_common.c:15
struct nsinfo * nsinfo__new(pid_t pid)
Definition: namespaces.c:112
pid_t tgid
Definition: namespaces.h:30
void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc)
Definition: namespaces.c:180
int newns
Definition: namespaces.h:39
u64 end_time
Definition: namespaces.h:21
bool need_setns
Definition: namespaces.h:32
void nsinfo__delete(struct nsinfo *nsi)
Definition: namespaces.c:161
pid_t nstgid
Definition: namespaces.h:31
refcount_t refcnt
Definition: namespaces.h:34
void nsinfo__mountns_exit(struct nscookie *nc)
Definition: namespaces.c:221
pid_t pid
Definition: namespaces.h:29