zdtm.py: The groups_test class for running groups

So here's the new test class that handles the test from
groups set. The class is inherited from zdtm_test one as
what it does is -- starts the pseudo-init in ns/uns flavors
and asks one to spawn() the sub-tests from the list.

All groups tests can only be run inside ns flavor, so if
the host flavor is asked, just the pseudo-init is spawned.
This is because using ns flavor is the easiest way to spawn
all the sub tests under this init (however, h flavor can be
supported by marking the pseudo-init as sub-reaper).

On stop this pseudo-init is signalled to stop, it in turn
stops all the sub-tests and then exits. When the pid
namespace destruction is complete, the sub-tests .out-s are
checked.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.py

@@ -477,7 +477,55 @@ class inhfd_test:
 		pass
 
 
-test_classes = { 'zdtm': zdtm_test, 'inhfd': inhfd_test }
+class groups_test(zdtm_test):
+	def __init__(self, name, desc, flavor):
+		zdtm_test.__init__(self, 'zdtm/lib/groups', desc, flavor)
+		if flavor.ns:
+			self.__real_name = name
+			self.__subs = map(lambda x: x.strip(), open(name).readlines())
+			print "Subs:\n%s" % '\n'.join(self.__subs)
+		else:
+			self.__real_name = ''
+			self.__subs = []
+
+		self._bins += self.__subs
+		self._env = { 'ZDTM_TESTS': self.__real_name }
+
+	def __get_start_cmd(self, name):
+		tdir = os.path.dirname(name)
+		tname = os.path.basename(name)
+
+		s_args = ['make', '--no-print-directory', '-C', tdir]
+		subprocess.check_call(s_args + [ tname + '.cleanout' ])
+		s = subprocess.Popen(s_args + [ '--dry-run', tname + '.pid' ], stdout = subprocess.PIPE)
+		cmd = s.stdout.readlines().pop().strip()
+		s.wait()
+
+		return 'cd /' + tdir + ' && ' + cmd
+
+	def start(self):
+		if (self.__subs):
+			with open(self.__real_name + '.start', 'w') as f:
+				for test in self.__subs:
+					cmd = self.__get_start_cmd(test)
+					f.write(cmd + '\n')
+
+			with open(self.__real_name + '.stop', 'w') as f:
+				for test in self.__subs:
+					f.write('kill -TERM `cat /%s.pid`\n' % test)
+
+		zdtm_test.start(self)
+
+	def stop(self):
+		zdtm_test.stop(self)
+
+		for test in self.__subs:
+			res = tail(test + '.out')
+			if not 'PASS' in res.split():
+				raise test_fail_exc("sub %s result check" % test)
+
+
+test_classes = { 'zdtm': zdtm_test, 'inhfd': inhfd_test, 'groups': groups_test }
 
 #
 # CRIU when launched using CLI

test/zdtm/lib/Makefile

@@ -5,6 +5,7 @@ CFLAGS	+= $(USERCFLAGS)
 
 LIBDIR	= .
 LIB	= libzdtmtst.a
+GRPS	= groups
 
 LIBSRC	= datagen.c msg.c parseargs.c test.c streamutil.c lock.c ns.c tcp.c fs.c
 LIBOBJ	= $(LIBSRC:%.c=%.o)
@@ -31,6 +32,17 @@ cleandep:
 cleanout:
 	@true
 
+$(GRPS): $(LIB)
+
+$(GRPS:%=%.pid): $(GRPS)
+	$(<D)/$(<F) --pidfile=$@ --outfile=$<.out
+
+$(GRPS:%=%.out): $(GRPS:%=%.pid)
+	-kill -TERM `cat $<`
+
+$(GRPS:%=%.cleanout): $(GRPS)
+	$(Q) $(RM) -f -r $<.pid $<.out* *$<.test* $<.*.test $<.state $<.init.pid
+
 realclean:	clean cleandep
 
 .PHONY:	clean cleandep cleanout realclean

test/zdtm/lib/groups.c

@@ -0,0 +1,46 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "zdtmtst.h"
+
+const char *test_doc	= "Group starter";
+const char *test_author	= "Pavel Emelianov <xemul@parallels.com>";
+
+int main(int argc, char **argv)
+{
+	int sret = 0;
+	char *env;
+	char sh[1024];
+
+	test_init(argc, argv);
+
+	env = getenv("ZDTM_TESTS");
+	if (env[0] != '\0') {
+		unsetenv("ZDTM_NEWNS");
+		unsetenv("ZDTM_GROUPS");
+		unsetenv("ZDTM_UID");
+		unsetenv("ZDTM_GID");
+		unsetenv("ZDTM_ROOT");
+		unsetenv("ZDTM_PIDFILE");
+
+		test_msg("List: [%s]\n", env);
+		sprintf(sh, "sh /%s.start", env);
+		system(sh);
+	}
+
+	test_daemon();
+	test_waitsig();
+
+	if (env[0] != '\0') {
+		sprintf(sh, "sh /%s.stop", env);
+		sret = system(sh);
+	}
+
+	if (sret == 0)
+		pass();
+	else
+		fail("Some subs failed");
+
+	return 0;
+}

test/zdtm/lib/groups.desc

@@ -0,0 +1 @@
+{'flags': 'noauto', 'deps': [ '/bin/sh', '/bin/kill', '/bin/cat' ]}