Re: [libvirt PATCH v2 07/10] nodedev: Add testing for 'mdevctl start'

On 6/11/20 3:40 PM, Erik Skultety wrote: > On Wed, Jun 10, 2020 at 08:01:47PM +0200, Michal Privoznik wrote: > > On 6/9/20 11:43 PM, Jonathon Jongsma wrote: > > > Test that we run 'mdevctl' with the proper arguments when creating new > > > mediated devices with virNodeDeviceCreateXML(). > > > > > > Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com&gt; > > > --- > > > build-aux/syntax-check.mk | 2 +- > > > tests/Makefile.am | 14 + > > > ...019_36ea_4111_8f0a_8c9a70e21366-start.argv | 1 + > > > ...019_36ea_4111_8f0a_8c9a70e21366-start.json | 1 + > > > ...d39_495e_4243_ad9f_beb3f14c23d9-start.argv | 1 + > > > ...d39_495e_4243_ad9f_beb3f14c23d9-start.json | 1 + > > > ...916_1ca8_49ac_b176_871d16c13076-start.argv | 1 + > > > ...916_1ca8_49ac_b176_871d16c13076-start.json | 1 + > > > tests/nodedevmdevctltest.c | 257 ++++++++++++++++++ > > > ...v_d069d019_36ea_4111_8f0a_8c9a70e21366.xml | 8 + > > > ...v_d2441d39_495e_4243_ad9f_beb3f14c23d9.xml | 10 + > > > ...v_fedc4916_1ca8_49ac_b176_871d16c13076.xml | 9 + > > > 12 files changed, 305 insertions(+), 1 deletion(-) > > > create mode 100644 tests/nodedevmdevctldata/mdev_d069d019_36ea_4111_8f0a_8c9a70e21366-start.argv > > > create mode 100644 tests/nodedevmdevctldata/mdev_d069d019_36ea_4111_8f0a_8c9a70e21366-start.json > > > create mode 100644 tests/nodedevmdevctldata/mdev_d2441d39_495e_4243_ad9f_beb3f14c23d9-start.argv > > > create mode 100644 tests/nodedevmdevctldata/mdev_d2441d39_495e_4243_ad9f_beb3f14c23d9-start.json > > > create mode 100644 tests/nodedevmdevctldata/mdev_fedc4916_1ca8_49ac_b176_871d16c13076-start.argv > > > create mode 100644 tests/nodedevmdevctldata/mdev_fedc4916_1ca8_49ac_b176_871d16c13076-start.json > > > create mode 100644 tests/nodedevmdevctltest.c > > > create mode 100644 tests/nodedevschemadata/mdev_d069d019_36ea_4111_8f0a_8c9a70e21366.xml > > > create mode 100644 tests/nodedevschemadata/mdev_d2441d39_495e_4243_ad9f_beb3f14c23d9.xml > > > create mode 100644 tests/nodedevschemadata/mdev_fedc4916_1ca8_49ac_b176_871d16c13076.xml > > > > > > diff --git a/build-aux/syntax-check.mk b/build-aux/syntax-check.mk > > > index bf8832a2a5..d47a92b530 100644 > > > --- a/build-aux/syntax-check.mk > > > +++ b/build-aux/syntax-check.mk > > > @@ -2015,7 +2015,7 @@ exclude_file_name_regexp--sc_prohibit_close = \ > > > (\.p[yl]$$|\.spec\.in$$|^docs/|^(src/util/vir(file|event)\.c|src/libvirt-stream\.c|tests/(vir.+mock\.c|commandhelper\.c|qemusecuritymock\.c)|tools/nss/libvirt_nss_(leases|macs)\.c)$$) > > > exclude_file_name_regexp--sc_prohibit_empty_lines_at_EOF = \ > > > - (^tests/(virhostcpu|virpcitest)data/|docs/js/.*\.js|docs/fonts/.*\.woff|\.diff|tests/virconfdata/no-newline\.conf$$) > > > + (^tests/(nodedevmdevctl|virhostcpu|virpcitest)data/|docs/js/.*\.js|docs/fonts/.*\.woff|\.diff|tests/virconfdata/no-newline\.conf$$) > > > exclude_file_name_regexp--sc_prohibit_fork_wrappers = \ > > > (^(src/(util/(vircommand|virdaemon)|lxc/lxc_controller)|tests/testutils)\.c$$) > > > diff --git a/tests/Makefile.am b/tests/Makefile.am > > > index f5766a7790..13cbdbb31e 100644 > > > --- a/tests/Makefile.am > > > +++ b/tests/Makefile.am > > > @@ -388,6 +388,10 @@ test_programs += storagevolxml2xmltest > > > test_programs += nodedevxml2xmltest > > > +if WITH_NODE_DEVICES > > > +test_programs += nodedevmdevctltest > > > +endif WITH_NODE_DEVICES > > > + > > > test_programs += interfacexml2xmltest > > > test_programs += cputest > > > @@ -970,6 +974,16 @@ nodedevxml2xmltest_SOURCES = \ > > > testutils.c testutils.h > > > nodedevxml2xmltest_LDADD = $(LDADDS) > > > +if WITH_NODE_DEVICES > > > +nodedevmdevctltest_SOURCES = \ > > > + nodedevmdevctltest.c \ > > > + testutils.c testutils.h > > > + > > > +nodedevmdevctltest_LDADD = \ > > > + ../src/libvirt_driver_nodedev_impl.la \ > > > + $(LDADDS) > > > +endif WITH_NODE_DEVICES > > > + > > > interfacexml2xmltest_SOURCES = \ > > > interfacexml2xmltest.c \ > > > testutils.c testutils.h > > > diff --git a/tests/nodedevmdevctldata/mdev_d069d019_36ea_4111_8f0a_8c9a70e21366-start.argv b/tests/nodedevmdevctldata/mdev_d069d019_36ea_4111_8f0a_8c9a70e21366-start.argv > > > new file mode 100644 > > > index 0000000000..dae6dedf7f > > > --- /dev/null > > > +++ b/tests/nodedevmdevctldata/mdev_d069d019_36ea_4111_8f0a_8c9a70e21366-start.argv > > > @@ -0,0 +1 @@ > > > +/usr/sbin/mdevctl start -p 0000:00:02.0 --jsonfile /dev/stdin > > > > This is a problem. If there is no mdevctl found during configure (my case), > > then MDEVCTL is going to be plain "mdevctl". Which is okay for the nodedev > > driver, because it uses virCommandRun() which uses virFindFileInPath() to > > get the real path at runtime. But for tests it won't fly. Alternativelly, if > > the mdevctl lived under say /bin or any other location than /usr/sbin the > > expected output would be different. > > > > In virnetdevbandwidthtest.c (which uses TC) I've worked around this by using > > TC directly to construct expected output. However, I guess we can safely > > assume that either mdevctl is present at build time so that its location is > > Why can we assume it safely? config.log doesn't complain and since we didn't > put this in a BuildRequires stanza, even if you do dnf builddep, you won't get > the program. Note that the situation with TC is different because (if I > overlook gentoo), it is provided by iproute-tc on Fedora and iproute2 on Debian > which are installed by default, so TC will be always present. I don't > think we should silently assume anything here, I believe configure should > complain because otherwise the tests will be failing and the developer would > not know why and it would also be confusing since our gitlab pipelines would be > green. Well, is iproute installed even for minimal installation? Because fedora builders certainly don't have it: https://kojipkgs.fedoraproject.org//packages/libvirt/6.1.0/4.fc32/data/lo... checking for radvd... /usr/sbin/radvd checking for tc... tc

(if tc was found then the full path would be printed, like it is for radvd) and we certainly don't want to fail configure if mdevctl wasn't found. What we can do then, is to generate the expected cmd line on the fly - just like