C++ (Cpp) ubi_dev_present Examples

Example #1

File: lsmtd_scan.c Project: sigma-star/mtd-utils

int scan_ubi(libubi_t lib_ubi)
{
	struct ubi_dev_info dev_info;
	struct ubi_info info;
	int i, j;

	if (ubi_get_info(lib_ubi, &info))
		return -1;

	if (!info.dev_count)
		return 0;

	ubi_dev = xcalloc(info.dev_count, sizeof(ubi_dev[0]));

	for (i = info.lowest_dev_num; i <= info.highest_dev_num; ++i) {
		if (!ubi_dev_present(lib_ubi, i))
			continue;

		if (ubi_get_dev_info1(lib_ubi, i, &dev_info)) {
			perror("ubi_get_dev_info1");
			return -1;
		}

		for (j = 0; j < num_mtd_devices; ++j) {
			if (mtd_dev[j].info.mtd_num == dev_info.mtd_num)
				break;
		}

		if (j == num_mtd_devices) {
			fprintf(stderr, "Cannot find mtd device %d refered to "
				"by ubi device %d\n", dev_info.mtd_num,
				dev_info.dev_num);
			return -1;
		}

		ubi_dev[num_ubi_devices].info = dev_info;
		mtd_dev[j].ubi = ubi_dev + num_ubi_devices;

		if (scan_ubi_device(lib_ubi, ubi_dev + num_ubi_devices))
			return -1;

		++num_ubi_devices;
	}
	return 0;
}

Example #2

File: libubi.c Project: edlangley/mtd-utils

int ubi_get_dev_info1(libubi_t desc, int dev_num, struct ubi_dev_info *info)
{
	DIR *sysfs_ubi;
	struct dirent *dirent;
	struct libubi *lib = (struct libubi *)desc;

	memset(info, 0, sizeof(struct ubi_dev_info));
	info->dev_num = dev_num;

	if (!ubi_dev_present(desc, dev_num))
		return -1;

	sysfs_ubi = opendir(lib->sysfs_ubi);
	if (!sysfs_ubi)
		return -1;

	info->lowest_vol_id = INT_MAX;

	while (1) {
		int vol_id, ret, devno;
		char tmp_buf[256];

		errno = 0;
		dirent = readdir(sysfs_ubi);
		if (!dirent)
			break;

		if (strlen(dirent->d_name) >= 255) {
			errmsg("invalid entry in %s: \"%s\"",
			       lib->sysfs_ubi, dirent->d_name);
			goto out_close;
		}

		ret = sscanf(dirent->d_name, UBI_VOL_NAME_PATT"%s", &devno, &vol_id, tmp_buf);
		if (ret == 2 && devno == dev_num) {
			info->vol_count += 1;
			if (vol_id > info->highest_vol_id)
				info->highest_vol_id = vol_id;
			if (vol_id < info->lowest_vol_id)
				info->lowest_vol_id = vol_id;
		}
	}

	if (!dirent && errno) {
		sys_errmsg("readdir failed on \"%s\"", lib->sysfs_ubi);
		goto out_close;
	}

	if (closedir(sysfs_ubi))
		return sys_errmsg("closedir failed on \"%s\"", lib->sysfs_ubi);

	if (info->lowest_vol_id == INT_MAX)
		info->lowest_vol_id = 0;

	if (dev_get_major(lib, dev_num, &info->major, &info->minor))
		return -1;

	if (dev_read_int(lib->dev_mtd_num, dev_num, &info->mtd_num))
		return -1;
	if (dev_read_int(lib->dev_avail_ebs, dev_num, &info->avail_lebs))
		return -1;
	if (dev_read_int(lib->dev_total_ebs, dev_num, &info->total_lebs))
		return -1;
	if (dev_read_int(lib->dev_bad_count, dev_num, &info->bad_count))
		return -1;
	if (dev_read_int(lib->dev_eb_size, dev_num, &info->leb_size))
		return -1;
	if (dev_read_int(lib->dev_bad_rsvd, dev_num, &info->bad_rsvd))
		return -1;
	if (dev_read_ll(lib->dev_max_ec, dev_num, &info->max_ec))
		return -1;
	if (dev_read_int(lib->dev_max_vols, dev_num, &info->max_vol_count))
		return -1;
	if (dev_read_int(lib->dev_min_io_size, dev_num, &info->min_io_size))
		return -1;

	info->avail_bytes = (long long)info->avail_lebs * info->leb_size;
	info->total_bytes = (long long)info->total_lebs * info->leb_size;

	return 0;

out_close:
	closedir(sysfs_ubi);
	return -1;
}