poky-qemu-internal will set up a tap lockfile when creating tap device. The lockfile
will be released when a TERM signal is received. In previous code, function
Test_Kill_Qemu uses pkill to kill all process named "qemu". This may cause lockfile
release function not work in poky-qemu-internal. Then poky-qemu-internal will be
hang when user start QEMU the second time. To prevent the issue, the new function
Test_Kill_Qemu kills all child pid with a given parent process ID.
Signed-off-by Jiajun Xu <jiajun.xu@intel.com>
Automation test is disabled by default. User need set TESTCLASS
to qemu in conf/local.conf and run bitbake command "bitbake
poky-image-xxx" or "bitbake poky-image-xxx -c qemuimagetest" to
trigger it. Currently only the sanity test with two testcases are
added.
To run the test, user need prepare a testing environment:
1) "expect" should be installed on system
2) NOPASSWD should be set for user to run bitbake
Signed-off-by Jiajun Xu <jiajun.xu@intel.com>
