source: rtems-libbsd/freebsd/lib/libc/stdlib/strtonum.c @ f41a394

55-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since f41a394 was d48955b, checked in by Sebastian Huber <sebastian.huber@…>, on Nov 6, 2013 at 8:02:16 AM

Add and use <machine/rtems-bsd-user-space.h>

  • Property mode set to 100644
File size: 1.8 KB
Line 
1#include <machine/rtems-bsd-user-space.h>
2
3/*-
4 * Copyright (c) 2004 Ted Unangst and Todd Miller
5 * All rights reserved.
6 *
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.
10 *
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.
18 *
19 *      $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $
20 */
21
22#include <sys/cdefs.h>
23__FBSDID("$FreeBSD$");
24
25#include <errno.h>
26#include <limits.h>
27#include <stdlib.h>
28
29#define INVALID         1
30#define TOOSMALL        2
31#define TOOLARGE        3
32
33long long
34strtonum(const char *numstr, long long minval, long long maxval,
35    const char **errstrp)
36{
37        long long ll = 0;
38        char *ep;
39        int error = 0;
40        struct errval {
41                const char *errstr;
42                int err;
43        } ev[4] = {
44                { NULL,         0 },
45                { "invalid",    EINVAL },
46                { "too small",  ERANGE },
47                { "too large",  ERANGE },
48        };
49
50        ev[0].err = errno;
51        errno = 0;
52        if (minval > maxval)
53                error = INVALID;
54        else {
55                ll = strtoll(numstr, &ep, 10);
56                if (errno == EINVAL || numstr == ep || *ep != '\0')
57                        error = INVALID;
58                else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
59                        error = TOOSMALL;
60                else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
61                        error = TOOLARGE;
62        }
63        if (errstrp != NULL)
64                *errstrp = ev[error].errstr;
65        errno = ev[error].err;
66        if (error)
67                ll = 0;
68
69        return (ll);
70}
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