diff mbox

block: add partition uuid into uevent as "PARTUUID"

Message ID 150729013610.744480.1644359289262914898.stgit@buzz (mailing list archive)
State New, archived
Headers show

Commit Message

Konstantin Khlebnikov Oct. 6, 2017, 11:42 a.m. UTC
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: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
---
 block/partition-generic.c |    2 ++
 1 file changed, 2 insertions(+)

Comments

Kyle Fortin Oct. 10, 2017, 8:57 p.m. UTC | #1
Hi Konstantin,

> On Oct 6, 2017, at 7:42 AM, Konstantin Khlebnikov <khlebnikov@yandex-team.ru> wrote:
> 
> 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: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
> ---
> block/partition-generic.c |    2 ++
> 1 file changed, 2 insertions(+)
> 
> diff --git a/block/partition-generic.c b/block/partition-generic.c
> index 88c555db4e5d..8f8b580aee16 100644
> --- a/block/partition-generic.c
> +++ b/block/partition-generic.c
> @@ -226,6 +226,8 @@ static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
> 	add_uevent_var(env, "PARTN=%u", part->partno);
> 	if (part->info && part->info->volname[0])
> 		add_uevent_var(env, "PARTNAME=%s", part->info->volname);
> +	if (part->info && part->info->uuid[0])
> +		add_uevent_var(env, "PARTUUID=%s", part->info->uuid);
> 	return 0;
> }

Looks fine.

Reviewed-by: Kyle Fortin <kyle.fortin@oracle.com>
diff mbox

Patch

diff --git a/block/partition-generic.c b/block/partition-generic.c
index 88c555db4e5d..8f8b580aee16 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -226,6 +226,8 @@  static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
 	add_uevent_var(env, "PARTN=%u", part->partno);
 	if (part->info && part->info->volname[0])
 		add_uevent_var(env, "PARTNAME=%s", part->info->volname);
+	if (part->info && part->info->uuid[0])
+		add_uevent_var(env, "PARTUUID=%s", part->info->uuid);
 	return 0;
 }