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/* Test program for dwfl_report_offline_memory.
Copyright (C) 2022 Google LLC
This file is part of elfutils.
This file is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
elfutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <assert.h>
#include <fcntl.h>
#include <locale.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <unistd.h>
#include ELFUTILS_HEADER(dwfl)
#include "system.h"
static const Dwfl_Callbacks offline_callbacks =
{
.find_debuginfo = INTUSE(dwfl_standard_find_debuginfo),
.section_address = INTUSE(dwfl_offline_section_address),
};
static int
count_modules (Dwfl_Module *mod __attribute__ ((unused)),
void **userdata __attribute__ ((unused)),
const char *name __attribute__ ((unused)),
Dwarf_Addr base __attribute__ ((unused)), void *arg)
{
unsigned long long *counter = arg;
++(*counter);
return DWARF_CB_OK;
}
int
main (int argc, char **argv)
{
/* We use no threads here which can interfere with handling a stream. */
(void) __fsetlocking (stdout, FSETLOCKING_BYCALLER);
/* Set locale. */
(void) setlocale (LC_ALL, "");
if (argc != 3)
error (-1, 0,
"usage: dwfl_report_offline_memory [filename] "
"[expected number of modules]");
const char *fname = argv[1];
int fd = open (fname, O_RDONLY);
if (fd < 0)
error (-1, 0, "can't open file %s: %s", fname, strerror (errno));
off_t size = lseek (fd, 0, SEEK_END);
if (size < 0)
error (-1, 0, "can't lseek file %s: %s", fname, strerror (errno));
lseek (fd, 0, SEEK_SET);
char *data = malloc (size);
if (data == NULL)
error (-1, 0, "can't malloc: %s", strerror (errno));
ssize_t bytes_read = read (fd, data, size);
assert (bytes_read == size);
close (fd);
Dwfl *dwfl = dwfl_begin (&offline_callbacks);
assert (dwfl != NULL);
Dwfl_Module *mod =
dwfl_report_offline_memory (dwfl, argv[1], argv[1], data, size);
assert (mod != NULL);
dwfl_report_end (dwfl, NULL, NULL);
unsigned long long number_of_modules = 0;
ptrdiff_t offset =
dwfl_getmodules (dwfl, &count_modules, &number_of_modules, 0);
if (offset < 0)
error (1, 0, "dwfl_getmodules: %s", dwfl_errmsg (-1));
assert (offset == 0);
char *endptr;
unsigned long long expected_number_of_modules =
strtoull (argv[2], &endptr, 0);
assert (endptr && !*endptr);
assert (number_of_modules == expected_number_of_modules);
dwfl_end (dwfl);
free (data);
return 0;
}
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