From: Richard Weinberger <richard@nod.at>
To: Greg KH <greg@kroah.com>
Cc: Pintu Agarwal <pintu.ping@gmail.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>
Subject: Re: MTD: How to get actual image size from MTD partition
Date: Fri, 16 Jul 2021 18:26:56 +0200 (CEST) [thread overview]
Message-ID: <568938486.33366.1626452816917.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <YPGojf7hX//Wn5su@kroah.com>
----- Ursprüngliche Mail -----
> Von: "Greg KH" <greg@kroah.com>
> An: "Pintu Agarwal" <pintu.ping@gmail.com>
> CC: "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>, "richard" <richard@nod.at>
> Gesendet: Freitag, 16. Juli 2021 17:41:01
> Betreff: Re: MTD: How to get actual image size from MTD partition
> On Fri, Jul 16, 2021 at 12:12:41PM +0530, Pintu Agarwal wrote:
>> Hi,
>>
>> Our ARM32 Linux embedded system consists of these:
>> * Linux Kernel: 4.14
>> * Processor: Qualcomm Arm32 Cortex-A7
>> * Storage: NAND 512MB
>> * Platform: Simple busybox
>> * Filesystem: UBIFS, Squashfs
>> * Consists of nand raw partitions, squashfs ubi volumes.
>>
>> 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. :-)
Thanks,
//richard
WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard@nod.at>
To: Greg KH <greg@kroah.com>
Cc: Pintu Agarwal <pintu.ping@gmail.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>
Subject: Re: MTD: How to get actual image size from MTD partition
Date: Fri, 16 Jul 2021 18:26:56 +0200 (CEST) [thread overview]
Message-ID: <568938486.33366.1626452816917.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <YPGojf7hX//Wn5su@kroah.com>
----- Ursprüngliche Mail -----
> Von: "Greg KH" <greg@kroah.com>
> An: "Pintu Agarwal" <pintu.ping@gmail.com>
> CC: "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>, "richard" <richard@nod.at>
> Gesendet: Freitag, 16. Juli 2021 17:41:01
> Betreff: Re: MTD: How to get actual image size from MTD partition
> On Fri, Jul 16, 2021 at 12:12:41PM +0530, Pintu Agarwal wrote:
>> Hi,
>>
>> Our ARM32 Linux embedded system consists of these:
>> * Linux Kernel: 4.14
>> * Processor: Qualcomm Arm32 Cortex-A7
>> * Storage: NAND 512MB
>> * Platform: Simple busybox
>> * Filesystem: UBIFS, Squashfs
>> * Consists of nand raw partitions, squashfs ubi volumes.
>>
>> 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. :-)
Thanks,
//richard
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard@nod.at>
To: Greg KH <greg@kroah.com>
Cc: Pintu Agarwal <pintu.ping@gmail.com>,
Kernelnewbies <kernelnewbies@kernelnewbies.org>,
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: Fri, 16 Jul 2021 18:26:56 +0200 (CEST) [thread overview]
Message-ID: <568938486.33366.1626452816917.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <YPGojf7hX//Wn5su@kroah.com>
----- Ursprüngliche Mail -----
> Von: "Greg KH" <greg@kroah.com>
> An: "Pintu Agarwal" <pintu.ping@gmail.com>
> CC: "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>, "richard" <richard@nod.at>
> Gesendet: Freitag, 16. Juli 2021 17:41:01
> Betreff: Re: MTD: How to get actual image size from MTD partition
> On Fri, Jul 16, 2021 at 12:12:41PM +0530, Pintu Agarwal wrote:
>> Hi,
>>
>> Our ARM32 Linux embedded system consists of these:
>> * Linux Kernel: 4.14
>> * Processor: Qualcomm Arm32 Cortex-A7
>> * Storage: NAND 512MB
>> * Platform: Simple busybox
>> * Filesystem: UBIFS, Squashfs
>> * Consists of nand raw partitions, squashfs ubi volumes.
>>
>> 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. :-)
Thanks,
//richard
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
next prev parent reply other threads:[~2021-07-16 16:27 UTC|newest]
Thread overview: 69+ 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 6:42 ` Pintu Agarwal
2021-07-16 6:42 ` Pintu Agarwal
2021-07-16 7:16 ` Richard Weinberger
2021-07-16 7:16 ` Richard Weinberger
2021-07-16 7:16 ` Richard Weinberger
2021-07-16 15:41 ` Greg KH
2021-07-16 15:41 ` Greg KH
2021-07-16 15:41 ` Greg KH
2021-07-16 16:26 ` Richard Weinberger [this message]
2021-07-16 16:26 ` Richard Weinberger
2021-07-16 16:26 ` Richard Weinberger
2021-07-19 9:09 ` Pintu Agarwal
2021-07-19 9:09 ` Pintu Agarwal
2021-07-19 9:09 ` Pintu Agarwal
2021-07-19 9:28 ` Richard Weinberger
2021-07-19 9:28 ` Richard Weinberger
2021-07-19 9:28 ` Richard Weinberger
2021-07-20 6:17 ` Pintu Agarwal
2021-07-20 6:17 ` Pintu Agarwal
2021-07-20 6:17 ` Pintu Agarwal
2021-07-20 6:40 ` Richard Weinberger
2021-07-20 6:40 ` Richard Weinberger
2021-07-20 6:40 ` Richard Weinberger
2021-07-20 8:01 ` Pintu Agarwal
2021-07-20 8:01 ` Pintu Agarwal
2021-07-20 8:01 ` Pintu Agarwal
2021-07-21 20:54 ` Richard Weinberger
2021-07-21 20:54 ` Richard Weinberger
2021-07-21 20:54 ` Richard Weinberger
2021-07-22 11:10 ` Pintu Agarwal
2021-07-22 11:10 ` Pintu Agarwal
2021-07-22 11:10 ` Pintu Agarwal
2021-07-27 21:16 ` Richard Weinberger
2021-07-27 21:16 ` Richard Weinberger
2021-07-27 21:16 ` Richard Weinberger
2021-07-29 11:17 ` Ezequiel Garcia
2021-07-29 11:17 ` Ezequiel Garcia
2021-07-29 11:17 ` Ezequiel Garcia
2021-07-29 11:45 ` Richard Weinberger
2021-07-29 11:45 ` Richard Weinberger
2021-07-29 11:45 ` Richard Weinberger
2021-07-29 12:03 ` Ezequiel Garcia
2021-07-29 12:03 ` Ezequiel Garcia
2021-07-29 12:03 ` Ezequiel Garcia
2021-07-29 17:11 ` Pintu Agarwal
2021-07-29 17:11 ` Pintu Agarwal
2021-07-29 17:11 ` Pintu Agarwal
2021-08-20 18:24 ` Pintu Agarwal
2021-08-20 18:24 ` Pintu Agarwal
2021-08-20 18:24 ` Pintu Agarwal
2021-08-22 14:21 ` Ezequiel Garcia
2021-08-22 14:21 ` Ezequiel Garcia
2021-08-22 14:21 ` Ezequiel Garcia
2021-08-30 15:58 ` Pintu Agarwal
2021-08-30 15:58 ` Pintu Agarwal
2021-08-30 15:58 ` Pintu Agarwal
2021-10-29 16:12 ` Pintu Agarwal
2021-10-29 16:12 ` Pintu Agarwal
2021-10-29 16:12 ` Pintu Agarwal
2021-10-29 16:48 ` Ezequiel Garcia
2021-10-29 16:48 ` Ezequiel Garcia
2021-10-29 16:48 ` Ezequiel Garcia
2021-11-08 13:51 ` Pintu Agarwal
2021-11-08 13:51 ` Pintu Agarwal
2021-11-08 13:51 ` Pintu Agarwal
2021-11-12 13:58 ` Ezequiel Garcia
2021-11-12 13:58 ` Ezequiel Garcia
2021-11-12 13:58 ` Ezequiel Garcia
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