1 /* 2 * Copyright (c) 2001-2018 The strace developers. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifdef HAVE_CONFIG_H 29 # include "config.h" 30 #endif 31 32 #include <errno.h> 33 #include <stdlib.h> 34 #include <string.h> 35 36 #include "string_to_uint.h" 37 38 long long 39 string_to_uint_ex(const char *const str, char **const endptr, 40 const unsigned long long max_val, 41 const char *const accepted_ending) 42 { 43 char *end; 44 long long val; 45 46 if (!*str) 47 return -1; 48 49 errno = 0; 50 val = strtoll(str, &end, 10); 51 52 if (str == end || val < 0 || (unsigned long long) val > max_val 53 || (val == LLONG_MAX && errno == ERANGE)) 54 return -1; 55 56 if (*end && (!accepted_ending || !strchr(accepted_ending, *end))) 57 return -1; 58 59 if (endptr) 60 *endptr = end; 61 62 return val; 63 } 64
