github.com/mvdan/u-root-coreutils@v0.0.0-20230122170626-c2eef2898555/pkg/cmdline/cmdline_linux.go (about)

     1  // Copyright 2018 the u-root Authors. All rights reserved
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package cmdline
     6  
     7  import (
     8  	"os"
     9  )
    10  
    11  const cmdLinePath = "/proc/cmdline"
    12  
    13  var procCmdLine *CmdLine
    14  
    15  func cmdLine(n string) *CmdLine {
    16  	procCmdLine = &CmdLine{AsMap: map[string]string{}}
    17  	r, err := os.Open(n)
    18  	if err != nil {
    19  		procCmdLine.Err = err
    20  		return procCmdLine
    21  	}
    22  
    23  	defer r.Close()
    24  
    25  	procCmdLine = parse(r)
    26  	return procCmdLine
    27  }
    28  
    29  func getCmdLine() *CmdLine {
    30  	return cmdLine(cmdLinePath)
    31  }