qga: Fix guest-get-fsinfo error API violations
commit292743d976324004d0c4f6f08e6d0589679d40ea
authorMarkus Armbruster <armbru@redhat.com>
Wed, 4 Dec 2019 09:36:16 +0000 (4 10:36 +0100)
committerMarkus Armbruster <armbru@redhat.com>
Wed, 18 Dec 2019 07:36:15 +0000 (18 08:36 +0100)
treea3ceb72c7518e57c7ac32dd9e95f07dcd119eb44
parentf6166a4da59bdd57b3af8b1c742ce611d6c3d3aa
qga: Fix guest-get-fsinfo error API violations

build_guest_fsinfo_for_virtual_device() dereferences @errp when
build_guest_fsinfo_for_device() fails.  That's wrong; see the big
comment in error.h.  Introduced in commit 46d4c5723e "qga: Add
guest-get-fsinfo command".

No caller actually passes null.

Fix anyway: splice in a local Error *err, and error_propagate().

Cc: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191204093625.14836-10-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
qga/commands-posix.c