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