[libvirt] [tck PATCH] scripts: shorten netdev/domain name to prevent overflow

[Laine Stump]

When new pids are more than 9 digits long

The nwfilter tests use tck-test${pid} as the auto-generated name for
their test domains (and therefore the tap devices created for those
test domains). When the pid is > 9 digits long, the total length of
the name is > 16, which is the maximum length for any network device
name (IFNAMSIZ), and this causes failure to create the tap device,
thus failure of the test:

  /home/laine/devel/libvirt-tck/scripts/nwfilter/050-apply-verify-host.t ..
  error: Failed to start domain tck-test10513851
  error: Network interface name 'tck-test10513851' is too long:
         Numerical result out of range

The solution is to just remove "test" from the name template, so pid
can be up to 12 digits long before the test fails.

Signed-off-by: Laine Stump <laine at laine.org>
---
 scripts/nwfilter/nwfilter2vmtest.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/nwfilter/nwfilter2vmtest.sh b/scripts/nwfilter/nwfilter2vmtest.sh
index ae28b73..778013b 100644
--- a/scripts/nwfilter/nwfilter2vmtest.sh
+++ b/scripts/nwfilter/nwfilter2vmtest.sh
@@ -638,8 +638,8 @@ main() {
     cd "${curdir}" || { echo "cd failed" >&2; exit 1; }
   fi
 
-  vm1="tck-test$$1"
-  vm2="tck-test$$2"
+  vm1="tck-$$1"
+  vm2="tck-$$2"
 
   createTestFilters "${flags}"
   if [ $? -ne 0 ]; then
-- 
2.14.4