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}; 42 43int nsinfo__init(struct nsinfo *nsi); 44struct nsinfo *nsinfo__new(pid_t pid); 45struct nsinfo *nsinfo__copy(struct nsinfo *nsi); 46void nsinfo__delete(struct nsinfo *nsi); 47 48struct nsinfo *nsinfo__get(struct nsinfo *nsi); 49void nsinfo__put(struct nsinfo *nsi); 50 51void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc); 52void nsinfo__mountns_exit(struct nscookie *nc); 53 54char *nsinfo__realpath(const char *path, struct nsinfo *nsi); 55 56static inline void __nsinfo__zput(struct nsinfo **nsip) 57{ 58 if (nsip) { 59 nsinfo__put(*nsip); 60 *nsip = NULL; 61 } 62} 63 64#define nsinfo__zput(nsi) __nsinfo__zput(&nsi) 65 66#endif /* __PERF_NAMESPACES_H */ 67