1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * 3 *
4 * Copyright (C) 2017 Hari Bathini, IBM Corpor 4 * Copyright (C) 2017 Hari Bathini, IBM Corporation
5 */ 5 */
6 6
7 #ifndef __PERF_NAMESPACES_H 7 #ifndef __PERF_NAMESPACES_H
8 #define __PERF_NAMESPACES_H 8 #define __PERF_NAMESPACES_H
9 9
10 #include <sys/types.h> 10 #include <sys/types.h>
11 #include <sys/stat.h> <<
12 #include <linux/stddef.h> 11 #include <linux/stddef.h>
13 #include <linux/perf_event.h> 12 #include <linux/perf_event.h>
14 #include <linux/refcount.h> 13 #include <linux/refcount.h>
15 #include <linux/types.h> 14 #include <linux/types.h>
16 #include <internal/rc_check.h> <<
17 15
18 #ifndef HAVE_SETNS_SUPPORT 16 #ifndef HAVE_SETNS_SUPPORT
19 int setns(int fd, int nstype); 17 int setns(int fd, int nstype);
20 #endif 18 #endif
21 19
22 struct perf_record_namespaces; 20 struct perf_record_namespaces;
23 21
24 struct namespaces { 22 struct namespaces {
25 struct list_head list; 23 struct list_head list;
26 u64 end_time; 24 u64 end_time;
27 struct perf_ns_link_info link_info[]; 25 struct perf_ns_link_info link_info[];
28 }; 26 };
29 27
30 struct namespaces *namespaces__new(struct perf 28 struct namespaces *namespaces__new(struct perf_record_namespaces *event);
31 void namespaces__free(struct namespaces *names 29 void namespaces__free(struct namespaces *namespaces);
32 30
33 DECLARE_RC_STRUCT(nsinfo) { !! 31 struct nsinfo {
34 pid_t pid; 32 pid_t pid;
35 pid_t tgid; 33 pid_t tgid;
36 pid_t nstgid; 34 pid_t nstgid;
37 bool need_setns; 35 bool need_setns;
38 bool in_pidns; <<
39 char *mntns_path; 36 char *mntns_path;
40 refcount_t refcnt; 37 refcount_t refcnt;
41 }; 38 };
42 39
43 struct nscookie { 40 struct nscookie {
44 int oldns; 41 int oldns;
45 int newns; 42 int newns;
46 char *oldcwd; 43 char *oldcwd;
47 }; 44 };
48 45
49 int nsinfo__init(struct nsinfo *nsi); 46 int nsinfo__init(struct nsinfo *nsi);
50 struct nsinfo *nsinfo__new(pid_t pid); 47 struct nsinfo *nsinfo__new(pid_t pid);
51 struct nsinfo *nsinfo__copy(const struct nsinf !! 48 struct nsinfo *nsinfo__copy(struct nsinfo *nsi);
>> 49 void nsinfo__delete(struct nsinfo *nsi);
52 50
53 struct nsinfo *nsinfo__get(struct nsinfo *nsi) 51 struct nsinfo *nsinfo__get(struct nsinfo *nsi);
54 void nsinfo__put(struct nsinfo *nsi); 52 void nsinfo__put(struct nsinfo *nsi);
55 53
56 bool nsinfo__need_setns(const struct nsinfo *n <<
57 void nsinfo__clear_need_setns(struct nsinfo *n <<
58 pid_t nsinfo__tgid(const struct nsinfo *nsi); <<
59 pid_t nsinfo__nstgid(const struct nsinfo *nsi <<
60 pid_t nsinfo__pid(const struct nsinfo *nsi); <<
61 pid_t nsinfo__in_pidns(const struct nsinfo *n <<
62 <<
63 void nsinfo__mountns_enter(struct nsinfo *nsi, 54 void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
64 void nsinfo__mountns_exit(struct nscookie *nc) 55 void nsinfo__mountns_exit(struct nscookie *nc);
65 56
66 char *nsinfo__realpath(const char *path, struc 57 char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
67 int nsinfo__stat(const char *filename, struct <<
68 <<
69 bool nsinfo__is_in_root_namespace(void); <<
70 58
71 static inline void __nsinfo__zput(struct nsinf 59 static inline void __nsinfo__zput(struct nsinfo **nsip)
72 { 60 {
73 if (nsip) { 61 if (nsip) {
74 nsinfo__put(*nsip); 62 nsinfo__put(*nsip);
75 *nsip = NULL; 63 *nsip = NULL;
76 } 64 }
77 } 65 }
78 66
79 #define nsinfo__zput(nsi) __nsinfo__zput(&nsi) 67 #define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
80 68
81 const char *perf_ns__name(unsigned int id); 69 const char *perf_ns__name(unsigned int id);
82 70
83 #endif /* __PERF_NAMESPACES_H */ 71 #endif /* __PERF_NAMESPACES_H */
84 72
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