Catch OSError exception for subprocess calls.

gns3server/modules/dynamips/hypervisor.py

@@ -212,7 +212,7 @@ class Hypervisor(DynamipsHypervisor):
                                                  cwd=self._working_dir)
             log.info("Dynamips started PID={}".format(self._process.pid))
             self._started = True
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             log.error("could not start Dynamips: {}".format(e))
             raise DynamipsError("could not start Dynamips: {}".format(e))
 

gns3server/modules/iou/iou_device.py

@@ -509,7 +509,7 @@ class IOUDevice(object):
                                                         cwd=self._working_dir)
 
             log.info("iouyap started PID={}".format(self._iouyap_process.pid))
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             iouyap_stdout = self.read_iouyap_stdout()
             log.error("could not start iouyap: {}\n{}".format(e, iouyap_stdout))
             raise IOUError("Could not start iouyap: {}\n{}".format(e, iouyap_stdout))
@@ -583,7 +583,7 @@ class IOUDevice(object):
                 self._started = True
             except FileNotFoundError as e:
                 raise IOUError("could not start IOU: {}: 32-bit binary support is probably not installed".format(e))
-            except subprocess.SubprocessError as e:
+            except (OSError, subprocess.SubprocessError) as e:
                 iou_stdout = self.read_iou_stdout()
                 log.error("could not start IOU {}: {}\n{}".format(self._path, e, iou_stdout))
                 raise IOUError("could not start IOU {}: {}\n{}".format(self._path, e, iou_stdout))
@@ -761,7 +761,7 @@ class IOUDevice(object):
                 command.extend(["-l"])
             else:
                 raise IOUError("layer 1 keepalive messages are not supported by {}".format(os.path.basename(self._path)))
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             log.warn("could not determine if layer 1 keepalive messages are supported by {}: {}".format(os.path.basename(self._path), e))
 
     def _build_command(self):

gns3server/modules/qemu/qemu_vm.py

@@ -678,7 +678,7 @@ class QemuVM(object):
                 priority = 0
             try:
                 subprocess.call(['renice', '-n', str(priority), '-p', str(self._process.pid)])
-            except subprocess.SubprocessError as e:
+            except (OSError, subprocess.SubprocessError) as e:
                 log.error("could not change process priority for QEMU VM {}: {}".format(self._name, e))
 
     def _stop_cpulimit(self):
@@ -710,7 +710,7 @@ class QemuVM(object):
             log.info("CPU throttled to {}%".format(self._cpu_throttling))
         except FileNotFoundError:
             raise QemuError("cpulimit could not be found, please install it or deactivate CPU throttling")
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             raise QemuError("Could not throttle CPU: {}".format(e))
 
     def start(self):
@@ -796,7 +796,7 @@ class QemuVM(object):
                                                      cwd=self._working_dir)
                 log.info("QEMU VM instance {} started PID={}".format(self._id, self._process.pid))
                 self._started = True
-            except subprocess.SubprocessError as e:
+            except (OSError, subprocess.SubprocessError) as e:
                 stdout = self.read_stdout()
                 log.error("could not start QEMU {}: {}\n{}".format(self._qemu_path, e, stdout))
                 raise QemuError("could not start QEMU {}: {}\n{}".format(self._qemu_path, e, stdout))
@@ -971,7 +971,7 @@ class QemuVM(object):
                     retcode = subprocess.call([qemu_img_path, "create", "-f", "qcow2", hda_disk, "128M"])
                     log.info("{} returned with {}".format(qemu_img_path, retcode))
 
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             raise QemuError("Could not create disk image {}".format(e))
 
         options.extend(["-hda", hda_disk])
@@ -983,7 +983,7 @@ class QemuVM(object):
                                               "backing_file={}".format(self._hdb_disk_image),
                                               "-f", "qcow2", hdb_disk])
                     log.info("{} returned with {}".format(qemu_img_path, retcode))
-                except subprocess.SubprocessError as e:
+                except (OSError, subprocess.SubprocessError) as e:
                     raise QemuError("Could not create disk image {}".format(e))
             options.extend(["-hdb", hdb_disk])
 

gns3server/modules/virtualbox/__init__.py

@@ -722,7 +722,7 @@ class VirtualBox(IModule):
 
         try:
             result = subprocess.check_output(command, stderr=subprocess.STDOUT, timeout=30)
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             raise VirtualBoxError("Could not execute VBoxManage {}".format(e))
         return result.decode("utf-8")
 

gns3server/modules/virtualbox/virtualbox_vm.py

@@ -558,7 +558,7 @@ class VirtualBoxVM(object):
                 raise VirtualBoxError("{}".format(virtualbox_error))
             else:
                 raise VirtualBoxError("{}".format(e))
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             raise VirtualBoxError("Could not execute VBoxManage: {}".format(e))
         return result.decode("utf-8").splitlines()
 

gns3server/modules/vpcs/vpcs_device.py

@@ -346,7 +346,7 @@ class VPCSDevice(object):
                     raise VPCSError("VPCS executable version must be >= 0.5b1")
             else:
                 raise VPCSError("Could not determine the VPCS version for {}".format(self._path))
-        except subprocess.SubprocessError as e:
+        except (OSError, subprocess.SubprocessError) as e:
             raise VPCSError("Error while looking for the VPCS version: {}".format(e))
 
     def start(self):
@@ -386,7 +386,7 @@ class VPCSDevice(object):
                                                      creationflags=flags)
                 log.info("VPCS instance {} started PID={}".format(self._id, self._process.pid))
                 self._started = True
-            except subprocess.SubprocessError as e:
+            except (OSError, subprocess.SubprocessError) as e:
                 vpcs_stdout = self.read_vpcs_stdout()
                 log.error("could not start VPCS {}: {}\n{}".format(self._path, e, vpcs_stdout))
                 raise VPCSError("could not start VPCS {}: {}\n{}".format(self._path, e, vpcs_stdout))