__pw_scan
if (__pw_scan(buffer, pwd, master ? _PWSCAN_MASTER : 0) == 0)
extern int __pw_scan(char *, struct passwd *, int);
if (!__pw_scan(bp, &pw, flags)) {
if (!__pw_scan(arg, pw, _PWSCAN_WARN|_PWSCAN_MASTER))
if (!__pw_scan(line, pw, _PWSCAN_WARN|_PWSCAN_MASTER)) {