int get_device_info(int fd, struct device_info *info)
{
blkid_probe probe;
struct stat stat;
int ret;
*info = device_info_clueless;
ret = fstat(fd, &stat);
if (ret < 0) {
perror("fstat on target failed");
return -1;
}
if (S_ISREG(stat.st_mode)) {
/* there is nothing more to discover for an image file */
info->type = TYPE_FILE;
info->partition = 0;
info->size = stat.st_size;
return 0;
}
if (!S_ISBLK(stat.st_mode)) {
/* neither regular file nor block device? not usable */
info->type = TYPE_BAD;
return 0;
}
probe = blkid_new_probe();
if (!probe) {
return -1;
}
if (blkid_probe_set_device(probe, fd, 0, 0)) {
blkid_free_probe(probe);
return -1;
}
get_block_device_size(info, fd);
get_block_geometry(info, fd);
info->sector_size = blkid_probe_get_sectorsize(probe);
/* use udev information if available, fall back to blkid probing */
if (udev_fill_info(info, &stat))
blkid_fill_info(info, probe);
blkid_free_probe(probe);
return 0;
}
int get_device_info(int fd, struct device_info *info)
{
struct stat stat;
int ret;
*info = device_info_clueless;
ret = fstat(fd, &stat);
if (ret < 0) {
perror("fstat on target failed");
return -1;
}
if (S_ISREG(stat.st_mode)) {
/* there is nothing more to discover for an image file */
info->type = TYPE_FILE;
info->partition = 0;
info->size = stat.st_size;
return 0;
}
if (!S_ISBLK(stat.st_mode)) {
/* neither regular file nor block device? not usable */
info->type = TYPE_BAD;
return 0;
}
get_block_device_size(info, fd);
get_block_geometry(info, fd);
get_sector_size(info, fd);
/* use udev information if available */
udev_fill_info(info, &stat);
return 0;
}