1  /*
       2   * Copyright (c) 2001-2021 The strace developers.
       3   * All rights reserved.
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   */
       7  
       8  #ifdef HAVE_CONFIG_H
       9  # include "config.h"
      10  #endif
      11  
      12  #include <errno.h>
      13  #include <stdlib.h>
      14  #include <string.h>
      15  
      16  #include "string_to_uint.h"
      17  
      18  long long
      19  string_to_uint_ex(const char *const str, char **const endptr,
      20  		  const unsigned long long max_val,
      21  		  const char *const accepted_ending)
      22  {
      23  	char *end;
      24  	long long val;
      25  
      26  	if (!*str)
      27  		return -1;
      28  
      29  	errno = 0;
      30  	val = strtoll(str, &end, 10);
      31  
      32  	if (str == end || val < 0 || (unsigned long long) val > max_val
      33  	    || (val == LLONG_MAX && errno == ERANGE))
      34  		return -1;
      35  
      36  	if (*end && (!accepted_ending || !strchr(accepted_ending, *end)))
      37  		return -1;
      38  
      39  	if (endptr)
      40  		*endptr = end;
      41  
      42  	return val;
      43  }