[Buildroot] [PATCH/2021.2 v1] package/genimage: fix for WSL (Windows-Subsystem for Linux)

[Yann E. MORIN <yann.morin.1998@free.fr>]

Peter, Peter, All,

On 2021-03-10 20:16 +0100, Peter Seiderer spake thusly:
> - add upstream patch ([1]) to fix usage with WSL (Windows-Subsystem for Linux)
> 
> Fixes:
> 
>   - https://bugs.busybox.net/show_bug.cgi?id=13146
>   - https://bugs.busybox.net/show_bug.cgi?id=13601
> 
>   ERROR: hdimage(sdcard.img): fiemap .../images/boot.vfat: 25 Inappropriate ioctl for device
>   ERROR: hdimage(sdcard.img): failed to write image partition 'boot'
> 
> [1] https://github.com/pengutronix/genimage/commit/4c2b02df0861e06ca9320d80ad60994d4a239ad6.patch
> 
> Signed-off-by: Peter Seiderer <ps.report@gmx.net>

Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>

Regards,
Yann E. MORIN.

> ---
>  ...add-fiemap-fallback-for-errno-ENOTTY.patch | 37 +++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 package/genimage/0001-util-add-fiemap-fallback-for-errno-ENOTTY.patch
> 
> diff --git a/package/genimage/0001-util-add-fiemap-fallback-for-errno-ENOTTY.patch b/package/genimage/0001-util-add-fiemap-fallback-for-errno-ENOTTY.patch
> new file mode 100644
> index 0000000000..4ce91ed19b
> --- /dev/null
> +++ b/package/genimage/0001-util-add-fiemap-fallback-for-errno-ENOTTY.patch
> @@ -0,0 +1,37 @@
> +From 6b61b55807fdce5d09ea470e7b5c8ca1e40f724f Mon Sep 17 00:00:00 2001
> +From: Peter Seiderer <ps.report@gmx.net>
> +Date: Wed, 12 Aug 2020 21:10:36 +0200
> +Subject: [PATCH] util: add fiemap fallback for errno ENOTTY
> +
> +On WSL-1, genimage fails with (see [1] for details):
> +
> +  ERROR: hdimage(sdcard.img): fiemap .../boot.vfat: 25 Inappropriate ioctl for device
> +
> +This is because WSL-1 is a limited Linux emulation layer, where the fiemap
> +ioctl incorrectly returns ENOTTY instead of the expected EOPNOTSUPP.
> +
> +[1] https://bugs.busybox.net/show_bug.cgi?id=13146
> +
> +Signed-off-by: Peter Seiderer <ps.report@gmx.net>
> +[From https://github.com/pengutronix/genimage/commit/4c2b02df0861e06ca9320d80ad60994d4a239ad6.patch]
> +Signed-off-by: Peter Seiderer <ps.report@gmx.net>
> +---
> + util.c | 2 +-
> + 1 file changed, 1 insertion(+), 1 deletion(-)
> +
> +diff --git a/util.c b/util.c
> +index 381c5d9..2dcf396 100644
> +--- a/util.c
> ++++ b/util.c
> +@@ -387,7 +387,7 @@ err_out:
> + 	free(fiemap);
> + 
> + 	/* If failure is due to no filesystem support, return a single extent */
> +-	if (ret == -EOPNOTSUPP)
> ++	if (ret == -EOPNOTSUPP || ret == -ENOTTY)
> + 		return whole_file_exent(size, extents, extent_count);
> + 
> + 	image_error(image, "fiemap %s: %d %s\n", filename, errno, strerror(errno));
> +-- 
> +2.30.1
> +
> -- 
> 2.30.1
> 
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