| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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 "../perf.h" |
| 13 | #include <linux/list.h> |
| 14 | #include <linux/refcount.h> |
| 15 | |
| 16 | struct namespaces_event; |
| 17 | |
| 18 | struct namespaces { |
| 19 | struct list_head list; |
| 20 | u64 end_time; |
| 21 | struct perf_ns_link_info link_info[]; |
| 22 | }; |
| 23 | |
| 24 | struct namespaces *namespaces__new(struct namespaces_event *event); |
| 25 | void namespaces__free(struct namespaces *namespaces); |
| 26 | |
| 27 | struct nsinfo { |
| 28 | pid_t pid; |
| 29 | pid_t tgid; |
| 30 | pid_t nstgid; |
| 31 | bool need_setns; |
| 32 | char *mntns_path; |
| 33 | refcount_t refcnt; |
| 34 | }; |
| 35 | |
| 36 | struct nscookie { |
| 37 | int oldns; |
| 38 | int newns; |
| 39 | char *oldcwd; |
| 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 */ |