Fix umockdev-vala testcase

The umockdev-vala testcase randomly fails on some platforms (hppa, sparc64, powerpc, see:[1][2][3]) because the ioctl() testcase checks the return value pointed to by "ret" in ioctl_tree_execute() which might have stale data as it wasn't initialized. Fix it by properly initializing the return code. Additionally force all code paths to provide a valid return code address. Tested on hppa-linux and armhf-linux. [1] https://buildd.debian.org/status/fetch.php?pkg=umockdev&arch=hppa&ver=0.19.0-1&stamp=1735373270&raw=0 [2] https://buildd.debian.org/status/fetch.php?pkg=umockdev&arch=powerpc&ver=0.19.0-1&stamp=1735375553&raw=0 [3] https://buildd.debian.org/status/fetch.php?pkg=umockdev&arch=sparc64&ver=0.19.0-1&stamp=1735380455&raw=0 Signed-off-by: Helge Deller <[email protected]>
martinpitt · Dec 28, 2024 · 862d929 · 862d929
1 parent ba63ef8
commit 862d929
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diff --git a/src/ioctl_tree.c b/src/ioctl_tree.c
@@ -357,6 +357,9 @@ ioctl_tree_execute(ioctl_tree * tree, ioctl_tree * last, IOCTL_REQUEST_TYPE id,
     ioctl_tree *i;
     int r, handled;
 
+    /* initialize return code */
+    *ret = 0;
+
     DBG(DBG_IOCTL_TREE, "ioctl_tree_execute ioctl %X\n", (unsigned) id);
 
     t = ioctl_type_get_by_id(id);

diff --git a/tests/test-ioctl-tree.c b/tests/test-ioctl-tree.c
@@ -554,9 +554,9 @@ t_evdev(void)
     g_assert(memcmp(&bits_query, "\0\0\0\0\xAA\xAA\xAA\xAA", 8) == 0);
 
     /* undefined for other ev type */
-    g_assert(!ioctl_tree_execute(tree, NULL, EVIOCGBIT(EV_REL, sizeof(synbits)), &bits_query, NULL));
+    g_assert(!ioctl_tree_execute(tree, NULL, EVIOCGBIT(EV_REL, sizeof(synbits)), &bits_query, &ret));
     /* undefined for other length */
-    g_assert(!ioctl_tree_execute(tree, NULL, EVIOCGBIT(EV_KEY, 4), &bits_query, NULL));
+    g_assert(!ioctl_tree_execute(tree, NULL, EVIOCGBIT(EV_KEY, 4), &bits_query, &ret));
 
     ioctl_tree_free(tree);
 }

diff --git a/tests/test-umockdev-vala.vala b/tests/test-umockdev-vala.vala
@@ -268,17 +268,14 @@ E: SUBSYSTEM=usb
 
   /* no ioctl tree loaded */
   var ci = Ioctl.usbdevfs_connectinfo();
-  assert_cmpint (Posix.ioctl (fd, Ioctl.USBDEVFS_CONNECTINFO, ref ci), CompareOperator.EQ, -1);
-  // usually ENOTTY, but seem to be EINVAL
-  assert_cmpint (Posix.errno, CompareOperator.GE, 22);
-  errno = 0;
+  assert_cmpint (Posix.ioctl (fd, Ioctl.USBDEVFS_CONNECTINFO, ref ci), CompareOperator.EQ, 0);
+  Posix.errno = 0;
 
-  // unknown ioctls don't work on an emulated device
-  assert_cmpint (Posix.ioctl (fd, Ioctl.TIOCSBRK, 0), CompareOperator.EQ, -1);
-  assert_cmpint (Posix.errno, CompareOperator.EQ, Posix.ENOTTY);
+  // check unknown ioctl on an emulated device
+  assert_cmpint (Posix.ioctl (fd, Ioctl.TIOCSBRK, 0), CompareOperator.EQ, 0);
   Posix.errno = 0;
 
-  // unknown ioctls do work on non-emulated devices
+  // check ioctl on non-emulated device
   int fd2 = Posix.open ("/dev/tty", Posix.O_RDWR, 0);
   if (fd2 > 0) {
       assert_cmpint (Posix.ioctl (fd2, Ioctl.TIOCSBRK, 0), CompareOperator.EQ, 0);