]>
Commit | Line | Data |
---|---|---|
a26baf28 BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Copyright 2008 Sun Microsystems, Inc. | |
24 | * All rights reserved. Use is subject to license terms. | |
25 | */ | |
26 | ||
27 | #include <string.h> | |
28 | #include <sys/types.h> | |
29 | ||
30 | /* | |
31 | * Returns the number of non-NULL bytes in string argument, | |
32 | * but not more than maxlen. Does not look past str + maxlen. | |
33 | */ | |
34 | size_t | |
35 | strnlen(const char *str, size_t maxlen) | |
36 | { | |
37 | const char *ptr; | |
38 | ||
39 | ptr = memchr(str, 0, maxlen); | |
40 | if (ptr == NULL) | |
41 | return (maxlen); | |
42 | ||
43 | return (ptr - str); | |
44 | } |