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/* Make sure that you can modify then ctf_gzwrite() a dict
and it changes after modification. */
#include <ctf-api.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <zlib.h>
char *read_gz(const char *path, size_t *len)
{
char *in = NULL;
char buf[4096];
gzFile foo;
size_t ret;
if ((foo = gzopen (path, "rb")) == NULL)
return NULL;
*len = 0;
while ((ret = gzread (foo, buf, 4096)) > 0)
{
if ((in = realloc (in, *len + ret)) == NULL)
{
fprintf (stderr, "Out of memory\n");
exit (1);
}
memcpy (&in[*len], buf, ret);
*len += ret;
}
if (ret < 0)
{
int errnum;
const char *err;
err = gzerror (foo, &errnum);
if (errnum != Z_ERRNO)
fprintf (stderr, "error reading %s: %s\n", path, err);
else
fprintf (stderr, "error reading %s: %s\n", path, strerror(errno));
exit (1);
}
gzclose (foo);
return in;
}
int
main (int argc, char *argv[])
{
ctf_dict_t *fp, *fp_b;
ctf_archive_t *ctf;
gzFile foo;
char *a, *b;
size_t a_len, b_len;
ctf_id_t type, ptrtype;
int err;
if (argc != 2)
{
fprintf (stderr, "Syntax: %s PROGRAM\n", argv[0]);
exit(1);
}
if ((ctf = ctf_open (argv[1], NULL, &err)) == NULL)
goto open_err;
if ((fp = ctf_dict_open (ctf, NULL, &err)) == NULL)
goto open_err;
if ((foo = gzopen ("tmpdir/one.gz", "wb")) == NULL)
goto write_gzerr;
if (ctf_gzwrite (fp, foo) < 0)
goto write_err;
gzclose (foo);
if ((foo = gzopen ("tmpdir/two.gz", "wb")) == NULL)
goto write_gzerr;
if (ctf_gzwrite (fp, foo) < 0)
goto write_err;
gzclose (foo);
if ((a = read_gz ("tmpdir/one.gz", &a_len)) == NULL)
goto read_err;
if ((b = read_gz ("tmpdir/two.gz", &b_len)) == NULL)
goto read_err;
if (a_len != b_len || memcmp (a, b, a_len) != 0)
{
fprintf (stderr, "consecutive gzwrites are different: lengths %zu and %zu\n", a_len, b_len);
return 1;
}
free (b);
/* Add some new types to the dict and write it out, then read it back in and
make sure they're still there, and that at least some of the
originally-present data objects are still there too. */
if ((type = ctf_lookup_by_name (fp, "struct a_struct")) == CTF_ERR)
fprintf (stderr, "Lookup of struct a_struct failed: %s\n", ctf_errmsg (ctf_errno (fp)));
if ((ptrtype = ctf_add_pointer (fp, CTF_ADD_ROOT, type)) == CTF_ERR)
fprintf (stderr, "Cannot add pointer to ctf_opened dict: %s\n", ctf_errmsg (ctf_errno (fp)));
unlink ("tmpdir/two.gz");
if ((foo = gzopen ("tmpdir/two.gz", "wb")) == NULL)
goto write_gzerr;
if (ctf_gzwrite (fp, foo) < 0)
goto write_err;
gzclose (foo);
if ((b = read_gz ("tmpdir/two.gz", &b_len)) == NULL)
goto read_err;
if (memcmp (a, b, b_len) == 0)
{
fprintf (stderr, "gzwrites after adding types does not change the dict\n");
return 1;
}
free (a);
if ((fp_b = ctf_simple_open (b, b_len, NULL, 0, 0, NULL, 0, &err)) == NULL)
goto open_err;
if (ctf_type_reference (fp_b, ptrtype) == CTF_ERR)
fprintf (stderr, "Lookup of pointer preserved across writeout failed: %s\n", ctf_errmsg (ctf_errno (fp_b)));
if (ctf_type_reference (fp_b, ptrtype) != type)
fprintf (stderr, "Look up of newly-added type in serialized dict yields ID %lx, expected %lx\n", ctf_type_reference (fp_b, ptrtype), type);
if (ctf_lookup_by_symbol_name (fp_b, "an_int") == CTF_ERR)
fprintf (stderr, "Lookup of symbol an_int failed: %s\n", ctf_errmsg (ctf_errno (fp_b)));
free (b);
ctf_dict_close (fp);
ctf_dict_close (fp_b);
ctf_close (ctf);
printf ("All done.\n");
return 0;
open_err:
fprintf (stderr, "%s: cannot open: %s\n", argv[0], ctf_errmsg (err));
return 1;
write_err:
fprintf (stderr, "%s: cannot write: %s\n", argv[0], ctf_errmsg (ctf_errno (fp)));
return 1;
write_gzerr:
{
int errnum;
const char *err;
err = gzerror (foo, &errnum);
if (errnum != Z_ERRNO)
fprintf (stderr, "error gzwriting: %s\n", err);
else
fprintf (stderr, "error gzwriting: %s\n", strerror(errno));
return 1;
}
read_err:
fprintf (stderr, "%s: cannot read\n", argv[0]);
return 1;
}
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