C++ (Cpp) vhd_get_batmap примеры использования

Пример #1

Файл: vhd-util-read.c Проект: BobBall/blktap

static int
vhd_print_headers(vhd_context_t *vhd, int hex)
{
	int err;

	vhd_print_footer(&vhd->footer, hex);

	if (vhd_type_dynamic(vhd)) {
		vhd_print_header(vhd, &vhd->header, hex);

		if (vhd->footer.type == HD_TYPE_DIFF)
			vhd_print_parent_locators(vhd, hex);

		if (vhd_has_batmap(vhd)) {
			err = vhd_get_batmap(vhd);
			if (err) {
				printf("failed to get batmap header\n");
				return err;
			}

			vhd_print_batmap_header(vhd, &vhd->batmap, hex);
		}
	}

	return 0;
}

Пример #2

Файл: vhd-util-read.c Проект: BobBall/blktap

static int
vhd_print_batmap(vhd_context_t *vhd)
{
	int err, gcc;
	size_t size;

	err = vhd_get_batmap(vhd);
	if (err) {
		printf("failed to read batmap: %d\n", err);
		return err;
	}

	size = vhd_sectors_to_bytes(vhd->batmap.header.batmap_size);
	gcc = write(STDOUT_FILENO, vhd->batmap.map, size);
	if (gcc)
		;

	return 0;
}

Пример #3

Файл: vhd-util-read.c Проект: BobBall/blktap

static int
vhd_test_batmap(vhd_context_t *vhd, uint64_t block, int count, int hex)
{
	int i, err;
	uint64_t cur;

	if (check_block_range(vhd, block + count, hex))
		return -ERANGE;

	err = vhd_get_batmap(vhd);
	if (err) {
		fprintf(stderr, "failed to get batmap\n");
		return err;
	}

	for (i = 0; i < count; i++) {
		cur = block + i;
		fprintf(stderr, "batmap for block %s: %d\n", conv(hex, cur),
			vhd_batmap_test(vhd, &vhd->batmap, cur));
	}

	return 0;
}

Пример #4

Файл: libvhd-journal.c Проект: DarumasLegs/blktap

int
vhd_journal_create(vhd_journal_t *j, const char *file, const char *jfile)
{
	int err;

	memset(j, 0, sizeof(vhd_journal_t));
	j->jfd = -1;

	j->jname = strdup(jfile);
	if (j->jname == NULL) {
		err = -ENOMEM;
		goto fail1;
	}

	if (access(j->jname, F_OK) == 0) {
		err = vhd_test_file_fixed(j->jname, &j->is_block);
		if (err)
			goto fail1;

		if (!j->is_block) {
			err = -EEXIST;
			goto fail1;
		}
	}

	if (j->is_block)
		j->jfd = open(j->jname, O_LARGEFILE | O_RDWR, 0644);
	else
		j->jfd = open(j->jname,
			      O_CREAT | O_TRUNC | O_LARGEFILE | O_RDWR, 0644);
	if (j->jfd == -1) {
		err = -errno;
		goto fail1;
	}

	err = vhd_open(&j->vhd, file, VHD_OPEN_RDWR | VHD_OPEN_STRICT);
	if (err)
		goto fail1;

	err = vhd_get_bat(&j->vhd);
	if (err)
		goto fail2;

	if (vhd_has_batmap(&j->vhd)) {
		err = vhd_get_batmap(&j->vhd);
		if (err)
			goto fail2;
	}

	err = vhd_journal_add_journal_header(j);
	if (err)
		goto fail2;

	err = vhd_journal_add_metadata(j);
	if (err)
		goto fail2;

	err = vhd_journal_disable_vhd(j);
	if (err)
		goto fail2;

	err = vhd_journal_sync(j);
	if (err)
		goto fail2;

	return 0;

fail1:
	if (j->jfd != -1) {
		close(j->jfd);
		if (!j->is_block)
			unlink(j->jname);
	}
	free(j->jname);
	memset(j, 0, sizeof(vhd_journal_t));

	return err;

fail2:
	vhd_journal_remove(j);
	return err;
}

Пример #5

Файл: libvhd-journal.c Проект: DarumasLegs/blktap

int
vhd_journal_open(vhd_journal_t *j, const char *file, const char *jfile)
{
	int err;
	vhd_context_t *vhd;

	memset(j, 0, sizeof(vhd_journal_t));

	j->jfd = -1;
	vhd    = &j->vhd;

	j->jname = strdup(jfile);
	if (j->jname == NULL)
		return -ENOMEM;

	j->jfd = open(j->jname, O_LARGEFILE | O_RDWR);
	if (j->jfd == -1) {
		err = -errno;
		goto fail;
	}

	err = vhd_test_file_fixed(j->jname, &j->is_block);
	if (err)
		goto fail;

	vhd->fd = open(file, O_LARGEFILE | O_RDWR | O_DIRECT);
	if (vhd->fd == -1) {
		err = -errno;
		goto fail;
	}

	err = vhd_test_file_fixed(file, &vhd->is_block);
	if (err)
		goto fail;

	err = vhd_journal_read_journal_header(j, &j->header);
	if (err)
		goto fail;

	err = vhd_journal_restore_metadata(j);
	if (err)
		goto fail;

	close(vhd->fd);
	free(vhd->bat.bat);
	free(vhd->batmap.map);

	err = vhd_open(vhd, file, VHD_OPEN_RDWR);
	if (err)
		goto fail;

	err = vhd_get_bat(vhd);
	if (err)
		goto fail;

	if (vhd_has_batmap(vhd)) {
		err = vhd_get_batmap(vhd);
		if (err)
			goto fail;
	}

	err = vhd_journal_disable_vhd(j);
	if (err)
		goto fail;

	return 0;

fail:
	vhd_journal_close(j);
	return err;
}