[d48955b] | 1 | #include <machine/rtems-bsd-user-space.h> |
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| 2 | |
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[68e0948] | 3 | /*- |
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| 4 | * Copyright (c) 2004 Ted Unangst and Todd Miller |
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| 5 | * All rights reserved. |
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| 6 | * |
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| 7 | * Permission to use, copy, modify, and distribute this software for any |
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| 8 | * purpose with or without fee is hereby granted, provided that the above |
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| 9 | * copyright notice and this permission notice appear in all copies. |
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| 10 | * |
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| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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| 12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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| 13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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| 14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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| 16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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| 17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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| 18 | * |
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| 19 | * $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $ |
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| 20 | */ |
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| 21 | |
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| 22 | #include <sys/cdefs.h> |
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| 23 | __FBSDID("$FreeBSD$"); |
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| 24 | |
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| 25 | #include <errno.h> |
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| 26 | #include <limits.h> |
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| 27 | #include <stdlib.h> |
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| 28 | |
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| 29 | #define INVALID 1 |
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| 30 | #define TOOSMALL 2 |
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| 31 | #define TOOLARGE 3 |
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| 32 | |
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| 33 | long long |
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| 34 | strtonum(const char *numstr, long long minval, long long maxval, |
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| 35 | const char **errstrp) |
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| 36 | { |
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| 37 | long long ll = 0; |
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| 38 | char *ep; |
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| 39 | int error = 0; |
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| 40 | struct errval { |
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| 41 | const char *errstr; |
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| 42 | int err; |
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| 43 | } ev[4] = { |
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| 44 | { NULL, 0 }, |
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| 45 | { "invalid", EINVAL }, |
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| 46 | { "too small", ERANGE }, |
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| 47 | { "too large", ERANGE }, |
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| 48 | }; |
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| 49 | |
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| 50 | ev[0].err = errno; |
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| 51 | errno = 0; |
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| 52 | if (minval > maxval) |
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| 53 | error = INVALID; |
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| 54 | else { |
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| 55 | ll = strtoll(numstr, &ep, 10); |
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| 56 | if (errno == EINVAL || numstr == ep || *ep != '\0') |
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| 57 | error = INVALID; |
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| 58 | else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval) |
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| 59 | error = TOOSMALL; |
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| 60 | else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval) |
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| 61 | error = TOOLARGE; |
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| 62 | } |
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| 63 | if (errstrp != NULL) |
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| 64 | *errstrp = ev[error].errstr; |
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| 65 | errno = ev[error].err; |
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| 66 | if (error) |
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| 67 | ll = 0; |
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| 68 | |
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| 69 | return (ll); |
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| 70 | } |
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