63 static int nsinfo__get_nspid(struct nsinfo *nsi, const char *path)  in nsinfo__get_nspid()  argument
77 			nsi->tgid = (pid_t)strtol(strrchr(statln, '\t'),  in nsinfo__get_nspid()
79 			nsi->nstgid = nsinfo__tgid(nsi);  in nsinfo__get_nspid()
84 			nsi->nstgid = (pid_t)strtol(nspid, NULL, 10);  in nsinfo__get_nspid()
89 			nsi->in_pidns = (statln + sizeof("NStgid:") - 1) != nspid;  in nsinfo__get_nspid()
99 int nsinfo__init(struct nsinfo *nsi)  in nsinfo__init()  argument
111 	if (asprintf(&newns, "/proc/%d/ns/mnt", nsinfo__pid(nsi)) == -1)  in nsinfo__init()
124 		nsi->need_setns = true;  in nsinfo__init()
125 		nsi->mntns_path = newns;  in nsinfo__init()
132 	if (snprintf(spath, PATH_MAX, "/proc/%d/status", nsinfo__pid(nsi)) >= PATH_MAX)  in nsinfo__init()
135 	rv = nsinfo__get_nspid(nsi, spath);  in nsinfo__init()
144 	struct nsinfo *nsi;  in nsinfo__new()  local
149 	nsi = calloc(1, sizeof(*nsi));  in nsinfo__new()
150 	if (nsi != NULL) {  in nsinfo__new()
151 		nsi->pid = pid;  in nsinfo__new()
152 		nsi->tgid = pid;  in nsinfo__new()
153 		nsi->nstgid = pid;  in nsinfo__new()
154 		nsi->need_setns = false;  in nsinfo__new()
155 		nsi->in_pidns = false;  in nsinfo__new()
160 		if (nsinfo__init(nsi) == -1)  in nsinfo__new()
161 			nsi->need_setns = false;  in nsinfo__new()
163 		refcount_set(&nsi->refcnt, 1);  in nsinfo__new()
166 	return nsi;  in nsinfo__new()
169 struct nsinfo *nsinfo__copy(const struct nsinfo *nsi)  in nsinfo__copy()  argument
173 	if (nsi == NULL)  in nsinfo__copy()
178 		nnsi->pid = nsinfo__pid(nsi);  in nsinfo__copy()
179 		nnsi->tgid = nsinfo__tgid(nsi);  in nsinfo__copy()
180 		nnsi->nstgid = nsinfo__nstgid(nsi);  in nsinfo__copy()
181 		nnsi->need_setns = nsinfo__need_setns(nsi);  in nsinfo__copy()
182 		nnsi->in_pidns = nsinfo__in_pidns(nsi);  in nsinfo__copy()
183 		if (nsi->mntns_path) {  in nsinfo__copy()
184 			nnsi->mntns_path = strdup(nsi->mntns_path);  in nsinfo__copy()
196 static void nsinfo__delete(struct nsinfo *nsi)  in nsinfo__delete()  argument
198 	zfree(&nsi->mntns_path);  in nsinfo__delete()
199 	free(nsi);  in nsinfo__delete()
202 struct nsinfo *nsinfo__get(struct nsinfo *nsi)  in nsinfo__get()  argument
204 	if (nsi)  in nsinfo__get()
205 		refcount_inc(&nsi->refcnt);  in nsinfo__get()
206 	return nsi;  in nsinfo__get()
209 void nsinfo__put(struct nsinfo *nsi)  in nsinfo__put()  argument
211 	if (nsi && refcount_dec_and_test(&nsi->refcnt))  in nsinfo__put()
212 		nsinfo__delete(nsi);  in nsinfo__put()
215 bool nsinfo__need_setns(const struct nsinfo *nsi)  in nsinfo__need_setns()  argument
217         return nsi->need_setns;  in nsinfo__need_setns()
220 void nsinfo__clear_need_setns(struct nsinfo *nsi)  in nsinfo__clear_need_setns()  argument
222         nsi->need_setns = false;  in nsinfo__clear_need_setns()
225 pid_t nsinfo__tgid(const struct nsinfo  *nsi)  in nsinfo__tgid()  argument
227         return nsi->tgid;  in nsinfo__tgid()
230 pid_t nsinfo__nstgid(const struct nsinfo  *nsi)  in nsinfo__nstgid()  argument
232         return nsi->nstgid;  in nsinfo__nstgid()
235 pid_t nsinfo__pid(const struct nsinfo  *nsi)  in nsinfo__pid()  argument
237         return nsi->pid;  in nsinfo__pid()
240 pid_t nsinfo__in_pidns(const struct nsinfo  *nsi)  in nsinfo__in_pidns()  argument
242         return nsi->in_pidns;  in nsinfo__in_pidns()
245 void nsinfo__mountns_enter(struct nsinfo *nsi,  in nsinfo__mountns_enter()  argument
259 	if (!nsi || !nsi->need_setns)  in nsinfo__mountns_enter()
273 	newns = open(nsi->mntns_path, O_RDONLY);  in nsinfo__mountns_enter()
316 char *nsinfo__realpath(const char *path, struct nsinfo *nsi)  in nsinfo__realpath()  argument
321 	nsinfo__mountns_enter(nsi, &nsc);  in nsinfo__realpath()
328 int nsinfo__stat(const char *filename, struct stat *st, struct nsinfo *nsi)  in nsinfo__stat()  argument
333 	nsinfo__mountns_enter(nsi, &nsc);  in nsinfo__stat()
342 	struct nsinfo nsi;  in nsinfo__is_in_root_namespace()  local
344 	memset(&nsi, 0x0, sizeof(nsi));  in nsinfo__is_in_root_namespace()
345 	nsinfo__get_nspid(&nsi, "/proc/self/status");  in nsinfo__is_in_root_namespace()
346 	return !nsi.in_pidns;  in nsinfo__is_in_root_namespace()