1 /* $OpenBSD: strtonum.c,v 1.5 2004/07/16 18:36:05 otto Exp $ */
2 /* $DragonFly: src/lib/libc/stdlib/strtonum.c,v 1.1 2004/08/15 16:01:11 joerg Exp $ */
4 * Copyright (c) 2004 Ted Unangst and Todd Miller
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
28 static struct errval {
33 { "invalid", EINVAL },
34 { "too small", ERANGE },
35 { "too large", ERANGE },
39 strtonum(const char *numstr, long long minval, unsigned long long umaxval,
42 long long ll, maxval = (long long)umaxval;
43 unsigned long long ull = 0;
49 if (umaxval > LLONG_MAX ) {
54 ull = strtoull(numstr, &ep, 10);
55 if (numstr == ep || *ep != '\0')
57 else if ((ull == ULLONG_MAX && errno == ERANGE) ||
60 else if (ull < minval)
63 if (minval > maxval || maxval < minval) {
67 ll = strtoll(numstr, &ep, 10);
68 if (numstr == ep || *ep != '\0')
70 else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
72 else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
74 ull = (unsigned long long)ll;
78 *errstrp = ev[error].errstr;
79 errno = ev[error].err;