/* 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; }