hide
int (*hide)(int, const char *); /* non-zero if error */
rv = (*exec_formats[i].hide)(fd, filename);
ELFNAMEEND(hide)(int fd, const char *fn)
int hide(struct passwd *);
if (hide(pw))
if (((pw = getpwnam(*p)) != NULL) && !hide(pw))
else if (match(pw, *p) && !hide(pw)) {
if ((pw = getpwnam(name)) && hide(pw))