47 	char oldns[PATH_MAX];  in nsinfo__init()  local
57 	if (snprintf(oldns, PATH_MAX, "/proc/self/ns/mnt") >= PATH_MAX)  in nsinfo__init()
63 	if (stat(oldns, &old_stat) < 0)  in nsinfo__init()
187 	int oldns = -1;  in nsinfo__mountns_enter()  local
193 	nc->oldns = -1;  in nsinfo__mountns_enter()
202 	oldns = open(curpath, O_RDONLY);  in nsinfo__mountns_enter()
203 	if (oldns < 0)  in nsinfo__mountns_enter()
213 	nc->oldns = oldns;  in nsinfo__mountns_enter()
218 	if (oldns > -1)  in nsinfo__mountns_enter()
219 		close(oldns);  in nsinfo__mountns_enter()
226 	if (nc == NULL || nc->oldns == -1 || nc->newns == -1)  in nsinfo__mountns_exit()
229 	setns(nc->oldns, CLONE_NEWNS);  in nsinfo__mountns_exit()
231 	if (nc->oldns > -1) {  in nsinfo__mountns_exit()
232 		close(nc->oldns);  in nsinfo__mountns_exit()
233 		nc->oldns = -1;  in nsinfo__mountns_exit()