[qemu] Python 3: Replace commands

Signed-off-by: NXu Han <xuhan@redhat.com>

qemu/tests/kernbench.py

 import logging
-import commands
 import os
 import re
 
@@ -32,7 +31,8 @@ def run(test, params, env):
         if "guest" in test_type:
             (s, o) = session.cmd_status_output(cmd, timeout=timeout)
         else:
-            (s, o) = commands.getstatusoutput(cmd)
+            cmd_result = process.run(cmd, ignore_status=True, shell=True)
+            (s, o) = cmd_result.exit_status, cmd_result.stdout
         return (s, o)
 
     def check_ept():

qemu/tests/ksm_base.py

@@ -2,11 +2,12 @@ import logging
 import time
 import random
 import os
-import commands
 import re
 
 import aexpect
 
+from avocado.utils import process
+
 from virttest import data_dir
 from virttest import error_context
 from virttest import utils_misc
@@ -99,7 +100,8 @@ def run(test, params, env):
 
     query_cmd = re.sub("QEMU_PID", str(vm.process.get_pid()), query_cmd)
 
-    _, sharing_page_0 = commands.getstatusoutput(query_cmd)
+    sharing_page_0 = process.system_output(query_cmd, verbose=False,
+                                           ignore_status=True, shell=True)
     if query_regex:
         sharing_page_0 = re.findall(query_regex, sharing_page_0)[0]
 
@@ -112,7 +114,8 @@ def run(test, params, env):
     _execute_allocator(cmd, vm, session, fill_timeout)
     time.sleep(120)
 
-    _, sharing_page_1 = commands.getstatusoutput(query_cmd)
+    sharing_page_1 = process.system_output(query_cmd, verbose=False,
+                                           ignore_status=True, shell=True)
     if query_regex:
         sharing_page_1 = re.findall(query_regex, sharing_page_1)[0]
 
@@ -127,7 +130,8 @@ def run(test, params, env):
     _execute_allocator(cmd, vm, session, fill_timeout)
     time.sleep(120)
 
-    _, sharing_page_2 = commands.getstatusoutput(query_cmd)
+    sharing_page_2 = process.system_output(query_cmd, verbose=False,
+                                           ignore_status=True, shell=True)
     if query_regex:
         sharing_page_2 = re.findall(query_regex, sharing_page_2)[0]
 

qemu/tests/performance.py

 import os
 import re
-import commands
 import shutil
 import shelve
 import threading
@@ -31,12 +30,14 @@ def cmd_runner_monitor(test, vm, monitor_cmd, test_cmd,
     """
     def thread_kill(cmd, p_file):
         fd = shelve.open(p_file)
-        o = commands.getoutput("pstree -p %s" % fd["pid"])
+        o = process.system_output("pstree -p %s" % fd["pid"], verbose=False,
+                                  ignore_status=True)
         tmp = re.split(r"\s+", cmd)[0]
         pid = re.findall(r"%s.(\d+)" % tmp, o)[0]
-        s, o = commands.getstatusoutput("kill -9 %s" % pid)
+        cmd_result = process.run("kill -9 %s" % pid, verbose=False,
+                                 ignore_status=True)
         fd.close()
-        return (s, o)
+        return (cmd_result.exit_status, cmd_result.stdout)
 
     def monitor_thread(m_cmd, p_file, r_file):
         fd = shelve.open(p_file)

qemu/tests/qemu_img.py

@@ -2,7 +2,6 @@ import os
 import time
 import re
 import logging
-import commands
 import shutil
 import tempfile
 
@@ -343,13 +342,15 @@ def run(test, params, env):
                                                                    image_name,
                                                                    crtcmd)
             error_context.context(msg, logging.info)
-            status, output = commands.getstatusoutput(crtcmd)
+            cmd_result = process.run(crtcmd, verbose=False, ignore_status=True)
+            status, output = cmd_result.exit_status, cmd_result.stdout
             if status != 0:
                 test.fail("Create snapshot failed via command: %s;"
                           "Output is: %s" % (crtcmd, output))
         listcmd = cmd
         listcmd += " -l %s" % image_name
-        status, out = commands.getstatusoutput(listcmd)
+        cmd_result = process.run(listcmd, verbose=False, ignore_status=True)
+        status, out = cmd_result.exit_status, cmd_result.stdout
         if not ("snapshot0" in out and "snapshot1" in out and status == 0):
             test.fail("Snapshot created failed or missed;"
                       "snapshot list is: \n%s" % out)
@@ -359,7 +360,8 @@ def run(test, params, env):
             delcmd += " -d %s %s" % (sn_name, image_name)
             msg = "Delete snapshot '%s' by command %s" % (sn_name, delcmd)
             error_context.context(msg, logging.info)
-            status, output = commands.getstatusoutput(delcmd)
+            cmd_result = process.run(delcmd, verbose=False, ignore_status=True)
+            status, output = cmd_result.exit_status, cmd_result.stdout
             if status != 0:
                 test.fail("Delete snapshot '%s' failed: %s" %
                           (sn_name, output))

qemu/tests/qmp_event_notification.py

 import logging
 import time
-import commands
+from functools import partial
+
+from avocado.utils import process
 
 from virttest import utils_misc
 
 
+_system_output = partial(process.system_output, shell=True)
+
+
 def run(test, params, env):
     """
     Test qmp event notification function:
@@ -28,7 +33,7 @@ def run(test, params, env):
     qmp_monitor = list(filter(lambda x: x.protocol == "qmp", vm.monitors))[0]
     humam_monitor = list(
         filter(lambda x: x.protocol == "human", vm.monitors))[0]
-    callback = {"host_cmd": commands.getoutput,
+    callback = {"host_cmd": _system_output,
                 "guest_cmd": session.cmd,
                 "monitor_cmd": humam_monitor.send_args_cmd,
                 "qmp_cmd": qmp_monitor.send_args_cmd}

qemu/tests/stepmaker.py

@@ -9,13 +9,14 @@ Step file creator/editor.
 
 import time
 import os
-import commands
 import logging
 
 import pygtk
 import gtk
 import gobject
 
+from avocado.utils import process
+
 from virttest import utils_misc
 from virttest import ppm_utils
 from virttest import step_editor
@@ -63,7 +64,7 @@ class StepMaker(step_editor.StepMakerWindow):
         self.steps_file.write("# Generated by Step Maker\n")
         self.steps_file.write("# Generated on %s\n" % time.asctime())
         self.steps_file.write("# uname -a: %s\n" %
-                              commands.getoutput("uname -a"))
+                              process.system_output("uname -a", verbose=False))
         self.steps_file.flush()
 
         self.vars_file.write("# This file lists the vars used during recording"

qemu/tests/timedrift.py

 import logging
 import time
-import commands
 
 import aexpect
+
+from avocado.utils import process
+
 from virttest import utils_test
 
 
@@ -35,13 +37,16 @@ def run(test, params, env):
         :param mask: The CPU affinity mask.
         :return: A dict containing the previous mask for each thread.
         """
-        tids = commands.getoutput("ps -L --pid=%s -o lwp=" % pid).split()
+        tids = process.system_output("ps -L --pid=%s -o lwp=" % pid,
+                                     verbose=False).split()
         prev_masks = {}
         for tid in tids:
-            prev_mask = commands.getoutput("taskset -p %s" % tid).split()[-1]
+            prev_mask = process.system_output("taskset -p %s" % tid,
+                                              verbose=False).split()[-1]
             prev_masks[tid] = prev_mask
-            commands.getoutput("taskset -p %s %s" % (mask, tid))
-        children = commands.getoutput("ps --ppid=%s -o pid=" % pid).split()
+            process.system("taskset -p %s %s" % (mask, tid), verbose=False)
+        children = process.system_output("ps --ppid=%s -o pid=" % pid,
+                                         verbose=False).split()
         for child in children:
             prev_masks.update(set_cpu_affinity(child, mask))
         return prev_masks
@@ -53,7 +58,7 @@ def run(test, params, env):
         :param prev_masks: A dict containing TIDs as keys and masks as values.
         """
         for tid, mask in prev_masks.items():
-            commands.getoutput("taskset -p %s %s" % (mask, tid))
+            process.system("taskset -p %s %s" % (mask, tid), verbose=False)
 
     vm = env.get_vm(params["main_vm"])
     vm.verify_alive()

qemu/tests/tsc_drift.py

 import time
 import os
 import logging
-import commands
 import re
 
 from avocado.utils import cpu
+from avocado.utils import process
+
 from virttest import data_dir
 
 
@@ -40,7 +41,8 @@ def run(test, params, env):
             tsc_cmd = tsc_cmd_host
         cmd = "taskset %s %s" % (1 << i, tsc_cmd)
         if machine == "host":
-            s, o = commands.getstatusoutput(cmd)
+            result = process.run(cmd, ignore_status=True)
+            s, o = result.exit_status, result.stdout
         else:
             s, o = session.cmd_status_output(cmd)
         if s != 0:
@@ -54,7 +56,7 @@ def run(test, params, env):
     session = vm.wait_for_login(timeout=int(params.get("login_timeout", 360)))
 
     if not os.path.exists(tsc_cmd_guest):
-        commands.getoutput("gcc %s" % tsc_freq_path)
+        process.run("gcc %s" % tsc_freq_path)
 
     ncpu = cpu.online_cpus_count()