From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44027) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dTaq6-0007uH-Tw for qemu-devel@nongnu.org; Fri, 07 Jul 2017 17:31:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dTaq5-0000eC-Q2 for qemu-devel@nongnu.org; Fri, 07 Jul 2017 17:31:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57820) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dTaq5-0000di-H2 for qemu-devel@nongnu.org; Fri, 07 Jul 2017 17:31:01 -0400 From: Eduardo Habkost Date: Fri, 7 Jul 2017 18:30:52 -0300 Message-Id: <20170707213052.13087-3-ehabkost@redhat.com> In-Reply-To: <20170707213052.13087-1-ehabkost@redhat.com> References: <20170707213052.13087-1-ehabkost@redhat.com> Subject: [Qemu-devel] [PATCH 2/2] qom: Fix ambiguous path detection when ambiguous=NULL List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini , =?UTF-8?q?Andreas=20F=C3=A4rber?= , Igor Mammedov , Mark Cave-Ayland object_resolve_path*() ambiguous path detection breaks when ambiguous==NULL and the object tree have 3 objects of the same type and only 2 of them are under the same parent. e.g.: /container/obj1 (TYPE_FOO) /container/obj2 (TYPE_FOO) /obj2 (TYPE_FOO) With the above tree, object_resolve_path_type("", TYPE_FOO, NULL) will incorrectly return /obj2, because the search inside "/container" will return NULL, and the match at "/obj2" won't be detected as ambiguous. Fix that by always calling object_resolve_partial_path() with a non-NULL ambiguous parameter. Test case included. Reported-by: Igor Mammedov Cc: Mark Cave-Ayland Signed-off-by: Eduardo Habkost --- qom/object.c | 17 ++++++++--------- tests/check-qom-proplist.c | 3 +++ 2 files changed, 11 insertions(+), 9 deletions(-) diff --git a/qom/object.c b/qom/object.c index 5f6fdfa..0cdddcb 100644 --- a/qom/object.c +++ b/qom/object.c @@ -1712,15 +1712,13 @@ static Object *object_resolve_partial_path(Object *parent, typename, ambiguous); if (found) { if (obj) { - if (ambiguous) { - *ambiguous = true; - } + *ambiguous = true; return NULL; } obj = found; } - if (ambiguous && *ambiguous) { + if (*ambiguous) { return NULL; } } @@ -1729,7 +1727,7 @@ static Object *object_resolve_partial_path(Object *parent, } Object *object_resolve_path_type(const char *path, const char *typename, - bool *ambiguous) + bool *ambiguousp) { Object *obj; gchar **parts; @@ -1738,11 +1736,12 @@ Object *object_resolve_path_type(const char *path, const char *typename, assert(parts); if (parts[0] == NULL || strcmp(parts[0], "") != 0) { - if (ambiguous) { - *ambiguous = false; - } + bool ambiguous = false; obj = object_resolve_partial_path(object_get_root(), parts, - typename, ambiguous); + typename, &ambiguous); + if (ambiguousp) { + *ambiguousp = ambiguous; + } } else { obj = object_resolve_abs_path(object_get_root(), parts, typename, 1); } diff --git a/tests/check-qom-proplist.c b/tests/check-qom-proplist.c index abafbd7..381532c 100644 --- a/tests/check-qom-proplist.c +++ b/tests/check-qom-proplist.c @@ -593,14 +593,17 @@ static void test_qom_partial_path(void) ambiguous = false; g_assert(!object_resolve_path_type("", TYPE_DUMMY, &ambiguous)); g_assert(ambiguous); + g_assert(!object_resolve_path_type("", TYPE_DUMMY, NULL)); ambiguous = false; g_assert(!object_resolve_path("obj2", &ambiguous)); g_assert(ambiguous); + g_assert(!object_resolve_path("obj2", NULL)); ambiguous = false; g_assert(object_resolve_path("obj1", &ambiguous) == obj1); g_assert(!ambiguous); + g_assert(object_resolve_path("obj1", NULL) == obj1); object_unparent(obj1); object_unparent(obj2a); -- 2.9.4