/* $NetBSD: strtonum.c,v 1.6.2.1 2024/08/23 18:50:16 martin Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Christos Zoulas. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __RCSID("$NetBSD: strtonum.c,v 1.6.2.1 2024/08/23 18:50:16 martin Exp $"); #include "namespace.h" #define _OPENBSD_SOURCE #include #include #include #include long long strtonum(const char *nptr, long long minval, long long maxval, const char **errstr) { int e; long long rv; const char *resp; char *eptr; if (errstr == NULL) errstr = &resp; if (minval > maxval) goto out; rv = (long long)strtoi(nptr, &eptr, 10, minval, maxval, &e); switch (e) { case 0: *errstr = NULL; return rv; case ECANCELED: case ENOTSUP: goto out; case ERANGE: if (*eptr) goto out; *errstr = rv == maxval ? "too large" : "too small"; return 0; default: abort(); } out: *errstr = "invalid"; return 0; }