Commit 758737d8 authored by Konstantin Khlebnikov's avatar Konstantin Khlebnikov Committed by Jens Axboe
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block: add partition uuid into uevent as "PARTUUID" 



Both most common formats have uuid in addition to partition name:
GPT: standard uuid xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
DOS: 4 byte disk signature and 1 byte partition xxxxxxxx-xx

Tools from util-linux use the same notation for them.

Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: default avatarKyle Fortin <kyle.fortin@oracle.com>
[dianders: rebased to modern kernels]
Signed-off-by: default avatarDouglas Anderson <dianders@google.com>
Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20241004171340.v2.1.I938c91d10e454e841fdf5d64499a8ae8514dc004@changeid


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 746fc7e9

block/partitions/core.c

+2 −0
Original line number Diff line number Diff line
@@ -256,6 +256,8 @@ static int part_uevent(const struct device *dev, struct kobj_uevent_env *env) 
	add_uevent_var(env, "PARTN=%u", bdev_partno(part));

	if (part->bd_meta_info && part->bd_meta_info->volname[0])

		add_uevent_var(env, "PARTNAME=%s", part->bd_meta_info->volname);

	if (part->bd_meta_info && part->bd_meta_info->uuid[0])

		add_uevent_var(env, "PARTUUID=%s", part->bd_meta_info->uuid);

	return 0;

}