1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright (C) 2017 Hari Bathini, IBM Corporation
7 #ifndef __PERF_NAMESPACES_H
8 #define __PERF_NAMESPACES_H
10 #include <sys/types.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>
18 #ifndef HAVE_SETNS_SUPPORT
19 int setns(int fd, int nstype);
22 struct perf_record_namespaces;
25 struct list_head list;
27 struct perf_ns_link_info link_info[];
30 struct namespaces *namespaces__new(struct perf_record_namespaces *event);
31 void namespaces__free(struct namespaces *namespaces);
33 DECLARE_RC_STRUCT(nsinfo) {
49 int nsinfo__init(struct nsinfo *nsi);
50 struct nsinfo *nsinfo__new(pid_t pid);
51 struct nsinfo *nsinfo__copy(const struct nsinfo *nsi);
53 struct nsinfo *nsinfo__get(struct nsinfo *nsi);
54 void nsinfo__put(struct nsinfo *nsi);
56 bool nsinfo__need_setns(const struct nsinfo *nsi);
57 void nsinfo__clear_need_setns(struct nsinfo *nsi);
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 *nsi);
63 void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
64 void nsinfo__mountns_exit(struct nscookie *nc);
66 char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
67 int nsinfo__stat(const char *filename, struct stat *st, struct nsinfo *nsi);
69 bool nsinfo__is_in_root_namespace(void);
71 static inline void __nsinfo__zput(struct nsinfo **nsip)
79 #define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
81 const char *perf_ns__name(unsigned int id);
83 #endif /* __PERF_NAMESPACES_H */