go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/common/system/exec2/exec2_unix.go (about)

     1  // Copyright 2019 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build !windows
    16  // +build !windows
    17  
    18  package exec2
    19  
    20  import (
    21  	"syscall"
    22  
    23  	"go.chromium.org/luci/common/errors"
    24  )
    25  
    26  type attr struct{}
    27  
    28  func (c *Cmd) setupCmd() {
    29  	c.SysProcAttr = &syscall.SysProcAttr{
    30  		// Use process group to kill all child processes.
    31  		Setpgid: true,
    32  	}
    33  }
    34  
    35  func (c *Cmd) start() error {
    36  	return c.Cmd.Start()
    37  }
    38  
    39  func (c *Cmd) terminate() error {
    40  	if err := c.Process.Signal(syscall.SIGTERM); err != nil {
    41  		return errors.Annotate(err, "failed to send SIGTERM").Err()
    42  	}
    43  	return nil
    44  }
    45  
    46  func (c *Cmd) kill() error {
    47  	return c.Process.Kill()
    48  }
    49  
    50  func (c *Cmd) wait() error {
    51  	return c.Cmd.Wait()
    52  }