1 /*- 2 * Copyright (c) 2006 M. Warner Losh. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 */ 25 26 #include <sys/cdefs.h> 27 __FBSDID("$FreeBSD$"); 28 29 /****************************************************************************** 30 * 31 * Filename: p_string.c 32 * 33 * Instantiation of basic string operations to prevent inclusion of full 34 * string library. These are simple implementations not necessarily optimized 35 * for speed, but rather to show intent. 36 * 37 * Revision information: 38 * 39 * 20AUG2004 kb_admin initial creation 40 * 12JAN2005 kb_admin minor updates 41 * 42 * BEGIN_KBDD_BLOCK 43 * No warranty, expressed or implied, is included with this software. It is 44 * provided "AS IS" and no warranty of any kind including statutory or aspects 45 * relating to merchantability or fitness for any purpose is provided. All 46 * intellectual property rights of others is maintained with the respective 47 * owners. This software is not copyrighted and is intended for reference 48 * only. 49 * END_BLOCK 50 *****************************************************************************/ 51 52 #include "lib.h" 53 54 /* 55 * .KB_C_FN_DEFINITION_START 56 * int p_strlen(char *) 57 * This global function returns the number of bytes starting at the pointer 58 * before (not including) the string termination character ('/0'). 59 * .KB_C_FN_DEFINITION_END 60 */ 61 int 62 p_strlen(const char *buffer) 63 { 64 const char *ptr = buffer; 65 while (*ptr++) 66 continue; 67 return (ptr - buffer - 1); 68 } 69