cap_getpwuid_r
int cap_getpwuid_r(cap_channel_t *chan, uid_t uid, struct passwd *pwd,
cap_getpwuid_r(cappwd, uids[i], &st, buf, sizeof(buf), &pwd);
cap_getpwuid_r(cappwd, UID_ROOT, &stc, bufc, sizeof(bufc), &pwdc);
cap_getpwuid_r(cappwd, UID_OPERATOR, &stc, bufc, sizeof(bufc),
cap_getpwuid_r(cappwd, UID_ROOT, &st, buf, sizeof(buf), &pwd);