From: Richard Weinberger <richard@nod.at>
To: Pintu Agarwal <pintu.ping@gmail.com>
Cc: Kernelnewbies <kernelnewbies@kernelnewbies.org>,
Greg KH <greg@kroah.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-mtd <linux-mtd@lists.infradead.org>,
Sean Nyekjaer <sean@geanix.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Phillip Lougher <phillip@squashfs.org.uk>
Subject: Re: MTD: How to get actual image size from MTD partition
Date: Mon, 19 Jul 2021 11:28:14 +0200 (CEST) [thread overview]
Message-ID: <1458549943.44607.1626686894648.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <CAOuPNLj1YC7gjuhyvunqnB_4JveGRyHcL9hcqKFSNKmfxVSWRA@mail.gmail.com>
----- Ursprüngliche Mail -----
> Von: "Pintu Agarwal" <pintu.ping@gmail.com>
> An: "richard" <richard@nod.at>
> CC: "Greg KH" <greg@kroah.com>, "linux-kernel" <linux-kernel@vger.kernel.org>, "linux-mtd"
> <linux-mtd@lists.infradead.org>, "linux-fsdevel" <linux-fsdevel@vger.kernel.org>, "Phillip Lougher"
> <phillip@squashfs.org.uk>, "Sean Nyekjaer" <sean@geanix.com>, "Kernelnewbies" <kernelnewbies@kernelnewbies.org>
> Gesendet: Montag, 19. Juli 2021 11:09:46
> Betreff: Re: MTD: How to get actual image size from MTD partition
> On Fri, 16 Jul 2021 at 21:56, Richard Weinberger <richard@nod.at> wrote:
>
>> >> My requirement:
>> >> To find the checksum of a real image in runtime which is flashed in an
>> >> MTD partition.
>> >
>> > Try using the dm-verity module for ensuring that a block device really
>> > is properly signed before mounting it. That's what it was designed for
>> > and is independent of the block device type.
>>
>> MTDs are not block devices. :-)
>>
> Is it possible to use dm-verity with squashfs ?
> We are using squashfs for our rootfs which is an MTD block /dev/mtdblock44
Well, if you emulate a block device using mtdblock, you can use dm-verity and friends.
Also consider using ubiblock. It offers better performance and wear leveling support.
Thanks,
//richard
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next prev parent reply other threads:[~2021-07-19 9:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-16 6:42 MTD: How to get actual image size from MTD partition Pintu Agarwal
2021-07-16 7:16 ` Richard Weinberger
2021-07-16 15:41 ` Greg KH
2021-07-16 16:26 ` Richard Weinberger
2021-07-19 9:09 ` Pintu Agarwal
2021-07-19 9:28 ` Richard Weinberger [this message]
2021-07-20 6:17 ` Pintu Agarwal
2021-07-20 6:40 ` Richard Weinberger
2021-07-20 8:01 ` Pintu Agarwal
2021-07-21 20:54 ` Richard Weinberger
2021-07-22 11:10 ` Pintu Agarwal
2021-07-27 21:16 ` Richard Weinberger
2021-07-29 11:17 ` Ezequiel Garcia
2021-07-29 11:45 ` Richard Weinberger
2021-07-29 12:03 ` Ezequiel Garcia
2021-07-29 17:11 ` Pintu Agarwal
2021-08-20 18:24 ` Pintu Agarwal
2021-08-22 14:21 ` Ezequiel Garcia
2021-08-30 15:58 ` Pintu Agarwal
2021-10-29 16:12 ` Pintu Agarwal
2021-10-29 16:48 ` Ezequiel Garcia
2021-11-08 13:51 ` Pintu Agarwal
2021-11-12 13:58 ` Ezequiel Garcia
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