/* Return the login name of the user, or NULL if it can't be determined.
The returned pointer, if not NULL, is good only until the next call. */
char *
getlogin (void)
{
static char login[1024]; /* XXX */
error_t err;
if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
{
errno = err;
return NULL;
}
return login;
}
/* Return at most NAME_LEN characters of the login name of the user in NAME.
If it cannot be determined or some other error occurred, return the error
code. Otherwise return 0. */
int
__getlogin_r (char *name, size_t name_len)
{
string_t login;
error_t err;
if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
return errno = err;
size_t len = __strnlen (login, sizeof login - 1) + 1;
if (len > name_len)
{
errno = ERANGE;
return errno;
}
memcpy (name, login, len);
return 0;
}
