github.com/openebs/node-disk-manager@v1.9.1-0.20230225014141-4531f06ffa1e/integration_tests/udev/events.go (about)

     1  /*
     2  Copyright 2019 The OpenEBS Authors
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package udev
    18  
    19  import (
    20  	"github.com/openebs/node-disk-manager/integration_tests/utils"
    21  	"strings"
    22  )
    23  
    24  // UDEV events available in the system
    25  const (
    26  	UdevEventAdd    = "add"
    27  	UdevEventRemove = "remove"
    28  )
    29  
    30  var execCommandWithPipe = utils.ExecCommandWithPipe
    31  
    32  // TriggerEvent triggers a udev event for the device with syspath.
    33  // The event is generated by writing the event action into
    34  // syspath/devicename/uevent file. This write will cause UDEV to trigger
    35  // the corresponding event. It is same as using `udevadm trigger`
    36  func TriggerEvent(event, syspath, devicePath string) error {
    37  	splitName := strings.Split(devicePath, "/")
    38  	deviceName := splitName[len(splitName)-1]
    39  	fileName := syspath + "/" + deviceName + "/uevent"
    40  	command1 := "echo " + event
    41  	command2 := "sudo tee " + fileName
    42  	_, err := execCommandWithPipe(command1, command2)
    43  	return err
    44  }