1  /*
       2   * Copyright (c) 2017-2021 The strace developers.
       3   *
       4   * SPDX-License-Identifier: LGPL-2.1-or-later
       5   */
       6  
       7  #include "defs.h"
       8  
       9  struct dyxlat {
      10  	size_t allocated;
      11  	struct xlat xlat;
      12  	struct xlat_data *data;
      13  };
      14  
      15  struct dyxlat *
      16  dyxlat_alloc(const size_t nmemb, enum xlat_type type)
      17  {
      18  	struct dyxlat *const dyxlat = xmalloc(sizeof(*dyxlat));
      19  
      20  	dyxlat->xlat.type = type;
      21  	dyxlat->xlat.size = 0;
      22  	dyxlat->allocated = nmemb;
      23  	dyxlat->xlat.data = dyxlat->data = xgrowarray(NULL, &dyxlat->allocated,
      24  						      sizeof(struct xlat_data));
      25  
      26  	return dyxlat;
      27  }
      28  
      29  void
      30  dyxlat_free(struct dyxlat *const dyxlat)
      31  {
      32  	for (size_t i = 0; i < dyxlat->xlat.size; ++i) {
      33  		free((void *) dyxlat->data[i].str);
      34  		dyxlat->data[i].str = NULL;
      35  	}
      36  
      37  	free(dyxlat->data);
      38  	dyxlat->xlat.data = NULL;
      39  	free(dyxlat);
      40  }
      41  
      42  const struct xlat *
      43  dyxlat_get(const struct dyxlat *const dyxlat)
      44  {
      45  	return &dyxlat->xlat;
      46  }
      47  
      48  void
      49  dyxlat_add_pair(struct dyxlat *const dyxlat, const uint64_t val,
      50  		const char *const str, const size_t len)
      51  {
      52  	for (size_t i = 0; i < dyxlat->xlat.size; ++i) {
      53  		if (dyxlat->data[i].val == val) {
      54  			if (strncmp(dyxlat->data[i].str, str, len) == 0
      55  			    && dyxlat->data[i].str[len] == '\0')
      56  				return;
      57  
      58  			free((void *) dyxlat->data[i].str);
      59  			dyxlat->data[i].str = xstrndup(str, len);
      60  			return;
      61  		}
      62  	}
      63  
      64  	if (dyxlat->xlat.size >= dyxlat->allocated)
      65  		dyxlat->xlat.data = dyxlat->data =
      66  			xgrowarray(dyxlat->data, &dyxlat->allocated,
      67  				   sizeof(struct xlat_data));
      68  
      69  	dyxlat->data[dyxlat->xlat.size].val = val;
      70  	dyxlat->data[dyxlat->xlat.size].str = xstrndup(str, len);
      71  	dyxlat->xlat.size++;
      72  }