[U-Boot] [PATCH 3/4 v2] UBIFS: Change ubifsload to not read beyond the requested size

[Wolfgang Denk]

Dear Stefan Roese,

In message <1288628880-6910-1-git-send-email-sr at denx.de> you wrote:
>
> +				/* Read block-size into temp buffer */
> +				ret = read_block(inode, buff, block, dn);
> +				if (ret) {
> +					err = ret;
> +					if (err != -ENOENT) {
> +						free(buff);
> +						break;
> +					}
> +				}
...
> +				ret = read_block(inode, addr, block, dn);
> +				if (ret) {
> +					err = ret;
> +					if (err != -ENOENT)
> +						break;
> +				}

I still wonder what's the logic behind this code. When will
read_block() return -ENOENT (aka "No such file or directory") ?
What are the other possible error conditions, and why would it make
sense to continue reading after these other errors?

Best regards,

Wolfgang Denk

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