On Thu, Sep 17, 2009 at 05:22:49PM -0500, Eric Sandeen wrote:
> +static errcode_t ext2fs_get_device_geometry(const char *file,
> + struct ext2_super_block *fs_param)
> +{
> + int fd;
> + int rc = 1;
> + int blocksize;
> + blkid_probe pr;
> + blkid_topology tp;
> + unsigned long min_io;
> + unsigned long opt_io;
> +
> +#ifdef HAVE_OPEN64
> + fd = open64(file, O_RDONLY);
> +#else
> + fd = open(file, O_RDONLY);
> +#endif
> + if (fd < 0)
> + return errno;
> +
> + pr = blkid_new_probe();
> + if (!pr)
> + goto out;
> +
> + rc = blkid_probe_set_device(pr, fd, 0, 0);
> + if (rc)
> + goto out;
> +
> + tp = blkid_probe_get_topology(pr);
> + if (!tp)
> + goto out;
> +
> + min_io = blkid_topology_get_minimum_io_size(tp);
> + opt_io = blkid_topology_get_optimal_io_size(tp);
> + blocksize = EXT2_BLOCK_SIZE(fs_param);
> +
> + fs_param->s_raid_stride = min_io / blocksize;
> + fs_param->s_raid_stripe_width = opt_io / blocksize;
> + rc = 0;
> +out:
blkid_free_probe(pr);
just in case you want to keep valgrind mem-leak checkers silent :-)
> + close(fd);
> + return rc;
> +}
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
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