1  #include <ctf-api.h>
       2  #include <stdio.h>
       3  #include <stdlib.h>
       4  #include <string.h>
       5  
       6  int
       7  main (int argc, char *argv[])
       8  {
       9    ctf_dict_t *fp;
      10    ctf_archive_t *ctf;
      11    ctf_id_t foo_type, bar_type, sym_type;
      12    int found_foo = 0, found_bar = 0;
      13    ctf_next_t *i = NULL;
      14    const char *name;
      15    int err;
      16  
      17    if (argc != 2)
      18      {
      19        fprintf (stderr, "Syntax: %s PROGRAM\n", argv[0]);
      20        exit(1);
      21      }
      22  
      23    if ((ctf = ctf_open (argv[1], NULL, &err)) == NULL)
      24      goto open_err;
      25  
      26    if ((fp = ctf_dict_open (ctf, NULL, &err)) == NULL)
      27      goto open_err;
      28  
      29    /* Make sure we can look up both 'foo' and 'bar' as variables, even though one
      30       of them is nonstatic: in a full link this should be erased, but this is an
      31       ld -r link.  */
      32  
      33    if ((foo_type = ctf_lookup_variable (fp, "foo")) == CTF_ERR)
      34      printf ("Cannot look up foo: %s\n", ctf_errmsg (ctf_errno (fp)));
      35    else
      36      printf ("foo is of type %lx\n", foo_type);
      37  
      38    if ((bar_type = ctf_lookup_variable (fp, "bar")) == CTF_ERR)
      39      printf ("Cannot look up bar: %s\n", ctf_errmsg (ctf_errno (fp)));
      40    else
      41      printf ("bar is of type %lx\n", bar_type);
      42  
      43    /* Traverse the entire data object section and make sure it contains entries
      44       for both foo and bar.  (This is pure laziness: the section is small and
      45       ctf_lookup_by_symbol_name does not yet exist.)  */
      46    while ((sym_type = ctf_symbol_next (fp, &i, &name, 0)) != CTF_ERR)
      47      {
      48        if (!name)
      49  	continue;
      50  
      51        if (strcmp (name, "foo") == 0)
      52  	found_foo = 1;
      53        if (strcmp (name, "bar") == 0)
      54  	found_bar = 1;
      55      }
      56    if (ctf_errno (fp) != ECTF_NEXT_END)
      57      fprintf (stderr, "Unexpected error iterating over symbols: %s\n",
      58  	     ctf_errmsg (ctf_errno (fp)));
      59  
      60    if (!found_foo)
      61      printf ("foo missing from the data object section\n");
      62    if (!found_bar)
      63      printf ("bar missing from the data object section\n");
      64  
      65    ctf_dict_close (fp);
      66    ctf_close (ctf);
      67  
      68    return 0;
      69  
      70   open_err:
      71    fprintf (stderr, "%s: cannot open: %s\n", argv[0], ctf_errmsg (err));
      72    return 1;
      73  }