[PATCH] mkimage: allow -l to work on block devices on Linux

[Tom Rini]

On Tue, May 18, 2021 at 10:59:04AM +0200, yann.dirson at blade-group.com wrote:

> From: Yann Dirson <yann at blade-group.com>
> 
> When "mkimage -l" was run on a block device it would fail with
> erroneous message, because fstat reports a size of zero for those:
> 
>  mkimage: Bad size: "/dev/sdb4" is not valid image
> 
> This patch identifies the "is a block device" case and reports it as
> such, and if it knows how to determine the size of a block device on
> the current OS, proceeds.
> 
> As shown in
> http://www.mit.edu/afs.new/sipb/user/tytso/e2fsprogs/lib/blkid/getsize.c
> this is no portable task, and I only handled the case of a modern
> Linux kernel, which is what I can test.
> 
> Signed-off-by: Yann Dirson <yann at blade-group.com>

Applied to u-boot/master, thanks!

-- 
Tom
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