99 	char oldns[PATH_MAX];  in nsinfo__init()  local
106 	if (snprintf(oldns, PATH_MAX, "/proc/self/ns/mnt") >= PATH_MAX)  in nsinfo__init()
112 	if (stat(oldns, &old_stat) < 0)  in nsinfo__init()
282 	int oldns = -1;  in nsinfo__mountns_enter()  local
289 	nc->oldns = -1;  in nsinfo__mountns_enter()
302 	oldns = open("/proc/self/ns/mnt", O_RDONLY);  in nsinfo__mountns_enter()
303 	if (oldns < 0)  in nsinfo__mountns_enter()
314 	nc->oldns = oldns;  in nsinfo__mountns_enter()
320 	if (oldns > -1)  in nsinfo__mountns_enter()
321 		close(oldns);  in nsinfo__mountns_enter()
328 	if (nc == NULL || nc->oldns == -1 || nc->newns == -1 || !nc->oldcwd)  in nsinfo__mountns_exit()
331 	setns(nc->oldns, CLONE_NEWNS);  in nsinfo__mountns_exit()
338 	if (nc->oldns > -1) {  in nsinfo__mountns_exit()
339 		close(nc->oldns);  in nsinfo__mountns_exit()
340 		nc->oldns = -1;  in nsinfo__mountns_exit()